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Publication numberUS3801766 A
Publication typeGrant
Publication date2 Apr 1974
Filing date22 Jan 1973
Priority date22 Jan 1973
Publication numberUS 3801766 A, US 3801766A, US-A-3801766, US3801766 A, US3801766A
InventorsC Morrison
Original AssigneeValleylab Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Switching means for an electro-surgical device including particular contact means and particular printed-circuit mounting means
US 3801766 A
Abstract
An electrical switching device is disclosed herein and comprises the major components suitable for use as a compact, easily installed switching device and also in an electro-surgical tool which, through the operation of the switching device, is readily adaptable for different intended uses and highly reliable. In one embodiment, the switching device includes a tubular housing having an intermediate longitudinally extending slot formed in its wall and a pair of longitudinally extending diametrically opposed recesses formed on its inner surface. A rectangularly shaped printed circuit board is mounted within the diametrically opposed recesses and includes at least three spaced apart electrical contacts which are positioned so as to be accessable through the slot formed in the housing. An integrally formed, elongated spring contact member is disposed in electrical conducting engagement with the center one of these electrical contacts and includes opposing energy absorbing coils, each of which is adapted to engage reliably a corresponding one of the otherwise free contacts. In this regard, in order to increase further the reliability of the engagement of the contacts, means are provided for securing the printed circuit board against inadvertent longitudinal movement within the housing. An arcuately shaped insert is mounted within the aforedescribed slot and engages portions of the lower surface of the circuit board for further securing said insert in place. In addition, the arcuately shaped insert includes a longitudinally extending slot adapted to receive therein a portion of a longitudinally extending rocker type switch actuator for pivotal movement about an axis generally normal to the axis of alignment of the electrical contacts. The free ends of the aforedescribed spring contact member are positioned within recess guides formed in the actuator and move into engagement with their corresponding contacts in response to selective pivotal movement.
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United States Patent [1 1 Morrison, Jr.

[ SWITCHING MEANS FOR AN ELECTRO-SURGICAL DEVICE INCLUDING PARTICULAR CONTACT MEANS AND PARTICULAR PRINTED-CIRCUIT MOUNTING MEANS [75] Inventor: Charles F. Morrison, Jrt, Boulder,

[73] Assignee: Valleylab, Inc., Boulder, C010.

[22] Filed: Jan. 22, 1973 21 Appl. No.: 325,828

[52] US. Cl. 200/157, 200/6 C, 200/153 K,

200/166 BH, 200/166 PC, 200/164 R, 128/303.14 [51] Int. Cl II0lh 23/30, HOlh 9/06, l-I01h 1/18 [58] Field of Search 200/153 K, 157, 166 BH,

200/166 BA, 166 PC, 61.85, 164 R, 6 BB, 6 BA, 6 C; 128/303.14

An electrical switching device is disclosed herein and comprises the major components suitable for use as a Apr. 2, 1974 compact, easily installed switching device and also in an electro-surgical tool which, through the operation of the switching device, is readily adaptable for different intended uses and highly reliable. In one embodiment, theswitching device includes a tubular housing having an intermediate longitudinally extending slot formed in its wall and ,a pair of longitudinally extending diametrically opposed recesses formed on its inner surface. A rectangularly shaped printed circuit board is mounted within the diametrically opposed recesses and includes at least three spaced apart electrical contacts which are positioned so as to be accessable through the slot formed in the housing. An integrally formed, elongated spring contact member is disposed in electrical conducting engagement with the center one of these electrical contacts and includes opposing energy absorbing coils, each of which is adapted to engage reliably a corresponding one of the otherwise free contacts. In this regard, in order to increase further the reliability of the engagement of the contacts, means are provided for securing the printed circuit board against inadvertent longitudinal movement within the housing. An arcuately shaped insert is mounted within the aforedescribed slot and engages portions of the lower surface of the circuit board for further securing said insert in place. In addition, the arcuately shaped insert includes a longitudinally extending slot adapted to receive therein a portion of a longitudinally extending rocker type switch actuator for pivotal movement about an axis generally normal to the axis of alignment of the electrical contacts. The free ends of the aforedescribed spring contact member are positioned within recess guides formed in the actuator and move into engagement with their corresponding contacts in response to selective pivotal movement.

10 Claims, 7 Drawing Figures 1 SWITCHING MEANS FOR AN ELECTRO-SURGICAL DEVICE INCLUDING PARTICULAR CONTACT MEANS AND PARTICULAR PRINTED-CIRCUIT MOUNTING MEANS I BACKGROUND OF THE INVENTION The present invention is related generally to an electrical switching device and more particularly to such a device especially suitable as part of an electro-surgical tool.

In the field of medicine generally and in the field of surgery in particular, surgical tools utilizing electrical power are being used more and-more. One such tool being used by surgeons today operates on electrical current to perform, for example, cutting and coagulating or cauterization operations. Finger-actuated slidetype electrical switches for actuating a single circuit of such a tool, or for selectively actuating a plurality of circuits, are well known and such are illustrated by United States Letters Patent No. 3,217,112. This patent discloses a rocker-type switch for selectively actuating a plurality of circuits, the actuating element between the rocker and the switch contact being perpendicular to the longitudinal axis of the casing. This switch has limited application and its construction results in a rather bulky device not susceptible for use in connection with an elongated pencil-shaped surgical tool which is prefered by and easily held in one hand of the physician during operations.

Finger-actuated surgical devices for the dual purpose of cutting and cauterizing tissue by the selective application of high frequency current ofa selected type and powerare also well known as exemplified by United States Letters Patent No. 1,813,902, and related United- States Letters Patent Nos. 2,611,635, 3,058,470, 3,089,496 and 3,100,489. Advantages of a surgical tool of this type having a finger-actuated switch over surgical tools having a foot pedal-operated switch or one operated by an assistant are amply set forth in these patents-and need no further amplification herein. The finger-actuated surgical tools of the prior art are, however, somewhat bulky in construction, do not lend themselves to facile sterilization procedures and techniques, and cannot be manufactured by relatively inexpensive plastic molding techniques.

A more recent development in switching devices especially suitable as part of an electro-surgical tool is disclosed in US. Letters Patent No. 3,648,001. In this patent, an electrical slide switch particularly adapted for use in surgical tools is disclosed which is incorporated in a pencil-type case for ease in handling and is readily adaptable for sterilization with standard sterilization procedures. In addition, it can be readily and inexpensively manufactured by conventional plastic molding techniques.

While the electrical switching device described in the above-referenced patent is a novel electrical switching device which is particularly adapted for its intended use, the present invention provides a novel electrical switching device which is particularly adapted for use in electro-surgical tools and which provides highly reliable switching and electrical engagement in an uncomplicated, compact and easily maneuverable design, all of which will become apparent hereinafter.

OBJECTS OF THE INVENTION In accordance with the foregoing, an object of the present invention is to provide a novel electrical switching device.

Another object of the present invention is to provide a novel three-position electrical switching device.

Another object of the present invention is to provide a switching device of the last-mentioned type which is easily movable between positions and which reliably engages the selected position.

Another object of the present invention is to provide a switching device of the last-mentioned type including a novel contact member for providing reliable electrical engagement.

Another object of the present invention is to provide an electrical switching device of the last-mentioned type including a novel rocker-type actuator adapted to cooperate with the spring contact member in providing a reliable electrical engagement.

Another object of the present invention is to provide a contact member which is designed to effect a wiping action across associated electrical contacts for providing reliable electrical engagement of the latter.

Another object of the present invention is to provide a novel two-position electrical switching device and spring contact member therefor.

Another object of the present invention is to provide a novel housing for the electrical switching device of the aforementioned type.

Another object of the present invention is to provide a novel pencil-type electro-surgical tool utilizing the switching device of the aforementioned type.

Another object of the present invention is to provide a novel switching device inexpensive to manufacture and easily installed or removed from a predetermined location such as the surface of an item.

These and other objects-and-features of the present invention will become apparent from the following descriptions.

DESCRIPTION OF THE DRAWINGS In the drawings:

FIG. 1 is a perspective view of a pencil-type electrosurgical tool utilizing a preferred embodiment of an electrical switching device constructed in accordance with the present invention;

FIG. -2 is an exploded perspective view of the compo nents comprising the electro-surgical tool of FIG. 1;

FIG. 3 is a sectional view taken generally along line 33 in FIG. 2 and particularly illustrating a spring contact member which is constructed in accordance with the present invention and which comprises part of the electrical switching device;

FIG. 4 is a longitudinal sectional view of the electrosurgical tool of FIG. 1, taken generally along line 44 in FIG. 1;

FIG. 5 is a cross-sectional view of the electro-surgical tool of FIG. 1 taken generally along line 55 in FIG.

FIG. 6 is a cross-sectional view of the electro-surgical tool of- FIG. I,taken generally along line 6-6 in FIG. 1; and

FIG. 7 is an exploded perspective view of another embodiment of a switching device constructed in accordance with this invention.

DETAILED DESCRIPTION OF THE DRAWINGS Turning now to FIGS. 1-6 of the drawing, wherein like components are designated by like reference numerals throughout the various figures, a pencil-like electro-surgical tool, constructed in accordance with the present invention, is illustrated in FIG. 1 and generally designated by thereference numeral 10. The electro-surgical tool includes a surgical cutting and coagulating means such as blade 12 connected with a multi-frequency electrical power supply (not shown) through suitable leads, the conduit being generally designated by the reference numeral 14, and an electrical switching device 16 which is constructed in accordance with the present invention. As will be seen hereinafter, the device 10 is a highly reliable, easily manipulated, uncomplicated and economically produced threeposition switch providing for an intermediate'or neutral position adapted to prevent current from reaching blade 12, a second position adapted to provide, for example, current of one type to reach the blade for cutting operations and a third position adapted to allow current of a second type to reach blade 12 for providing a coagulating operation. While the electrical switching device 16 is especially suitable as part of a pencil-like electro-surgical tool such as tool 10, it is to be understood that the switching device could be readily used in other types of electrical switching operations.

In order to achieve reliability, easy manipulation, simplicity and economy in manufacture, the electrical switching device 16 includes a plurality of carefully'designed cooperating components including an elongated tubular housing 18 (see FIG. 2) within which a rectangular printed circuit board 20 is disposed An integrally formed spring contact member 22 (see FIG. 3) is mounted on the circuit board 20 and an end cap 24 is adapted for insertion into the rearwardmost end of housing 18 and is provided for securing the printed circuit board within'the housing to prevent inadvertent longitudinal movement of the circuit boardrelative to thehousing; A front cap 26 is mounted over the front of housing 18 and provided for supporting and/or shielding the cutting and coagulating blade 12 and limits forward movement of the circuit board. A rocker type actuator switch 28'is pivotally supported by an arcuately shaped insert 30 and cooperates with spring contact member 22 for providing easily manipulated selection of the various switch positions.

Turning toFIG. 2, attention is specifically directed to tubular housing 18 which is constructed from an elongated tube, preferably of molded plastic, and having a cylindrical bore 32 extending therethrough. For reasons to be described hereinafter, housing 18 includes a longitudinally extending slot 34 which is formed in the housing wall intermediate the ends of the housing and which has a circumferential extent exceeding 180. The housing also includesia pair of longitudinally extending, diametrically opposed recesses 36 formed on the inner surface of the housing, as best illustrated in FIG. 6. The recesses extend the entire length of housing 18 and receive and support rectangular circuit board 20in a plane which is parallel to a plane passing through the longitudinal edges of slot 34 as will be seen hereinafter.

Attention is now directed to rectangular circuit board 20 which is illustrated best in FIG. 2. Circuit board 20 includes on its top surface two or more spaced-apart, generally longitudinally aligned electrical contacts 38, 40, and 42 which are respectively connected to corresponding ones of a plurality of electrical leads 44 through a printed circuit (not shown) located on the underside of the circuit board. Leads 44 extend through aforedescribed conduit 14 and are connected in a conventional manner to appropriate circuitry. The contacts 38, 40 and 42 are shown as being connected by the printed circuit to a conductive coupling member 46, which is suitably mounted to the forwardmost end of the circuit board. Coupling member 46 is provided for'connecting blade 12 to the output of the RF power source via one of the leads 44 and the printed circuit. The tool 10 shown in the drawings does not contemplate switching power directly to the blade 12 but same could be accomplished by using the proper type of contacts 38, 40 and 42. Circuit board 20 is mounted within diametrically opposed recesses 36 of housing 18 such that contacts 38, 40 and 42 are a'ccessable through slot 34. In this position, coupling member 46 is appropriately located for receiving blade 12 in electrical engagement, as will be described hereinafter.

In order to secure printed circuit board 20 within housing 18 in the manner described above so as to prevent inadvertent'longitudinal movement of the circuit board relative to the housing, end cap 24 and nose cap 26 are provided. The end cap 24 includes a radially extending boss portion 48 which is formed on an annular portion 50 extending radially from a tapered head 52.

As illustrated best in FIGS. 4 and 6, end cap 24 is disposed within cylindrical bore 32 of housing 18 through the back end of the latter so that boss portion 48 is suitably seated within a cooperating'recess 54 formed adjacent the end of the housing and so that head 52 of cap 24 is contiguous with the back end thereof." Positioned in this manner, it should be noted that the annular portion 52 extends into the housing'a distance sufficient to engage abuttingly against the back end of circuit board 20. Hence, annular portion 50 prevents the circuit board from inadvertent longitudinal movement in .the rearward direction. As will be seen hereinafter, front cap 26 prevents the circuit board 20 from inadvertent longitudinal movement in a forward direction. As seen best in FIG. 4, both annular portion 50 and head portion 52 of end cap 24 together define an open ended passage 58 for allowing the conduit 14 to pass therethrough. As also illustrated in FIG. 4, front cap 26, which is hollow, includes a cylindrical rearward portion 51 and an inwardly tapering forward portion 53 adapted to receive balde 12 in the manner illustrated. The inner surface of the rearward portion 51 and the outer surface of the adjacent end of the housing have a complemental boss and recess formed therein to provide frictional intercoupling thereof in the same manner asdescribed above with the end cap 24 and the end of housing adjacent thereto. When the front cap 26 is mounted on the housing 18, coupling member 46 will electrically engage the blade 12 and cap 26 will prevent the circuit board 20 from moving forward.

Turning to FIG. 3, attention is directed to the integrally formed spring contact member 22 which, as illustrated, includes a substantially straight center portion 60 ha ving energy absorbing coils 62 and 64 formed at each end thereof Each of the coils 62 and 64, respectively, has a generally L-shaped portion 66 and 68 which extends outwardly therefrom and which has a generally arcuately shaped free end including a convex part 70 and 72, respectively.

The center portion 60 of contact member 22 is suitably secured in electrical conducting engagement with the center contact 40 of circuit board while the free ends of the L-shaped portions 66 and 68 are, respectively, normally disposed generally above and out of electrical conducting engagement with contacts 38 and 42, respectively. In fact, as illustrated in FIG. 3, the convex parts 70 and 72 of L-shaped portions 66 and 68 are positioned above the contacts 38 and 42. As will be seen hereinafter, each of the convex parts engages its respective contact in a wiping-type action when the convex part is brought into electrical conducting engagement therewith. This, in turn, provides for a more reliable electrical engagement.

Returning to FIG. 2 in conjunction with FIG. 5, the arcuately shaped insert member 30 is shown. The insert member includes an elongated body portion-74 having a curvalinear cross-section with a radius of curvature equal to that of housing 18. The body portion 74 is complementally mounted within slot 34 of housing 18,

as best illustrated in FIGS. 1 and 5, and includes a longitudinally extending slot 76 formed through its wall intermediate the longitudinal ends thereof. As will be seen hereinafter, the slot 76 is provided for receiving therein the rocker-type actuator 28.

Insert member also includes a pair of longitudinally extending but radially inwardly directed fingers 78 (see FIGS) which when mounted within the slot 34, are disposed in the same plane in which lies one of the surfaces of diametrically. opposed recesses 36. As also seen in FIG. 5, longitudinal channels 82 are formed on opposite sides of slot 34 in housing 18 and extend the length of the slot 34. In this manner, the radially inwardly directed fingers 78 of insert member 30 engage the lower surface of the circuit board 20 and member 30 is secured within said slot as a result thereof.

In order to support rocker-type actuator 28 in a manextending outwardly from opposite sides of abody por- I tion 88 and disposed with the aligned recesses 84 of insert member 30. In this manner, a centrally located rocker portion 90, formed on the under side of body portion 88' is disposed; to contact a portion 0F the printed circuit board 20 such that the actuator 28 is pivot-ally movable about an axis generally normal to the axis of alignment of the electrical contacts 38', 40 and 42 of printed circuit board 20.

Actuator 28 also includes longitudinally extending recesses 92 and 94 formed in the lower surface of the housing portion 88v adjacent eachend of the housing portion. These recesses 92 and: 94 are provided as guide means for respective free ends of the L-shaped portions 66 and 68. More specifically, a part of the free end of each L-shaped portion 66 and 68' of spring contact member 22: is: disposed within a corresponding one of the recesses 92 and- 94 such that the L-shaped portions are guided by and move with the actuator. In

this regard, the actuator includes a finger-engaging portion 96 on the top side of housing 88, the fingerengaging portion being disposed outside of housing 18 and insert 30 through slot 76. The finger engaging portion 96 is adapted to be engaged by the finger of an operator for selectively rotating the actuator in opposite directions wherebyupon application of a force to the actuator, the latter is pivotally moved. If this movement, is, for example, forward movement (toward the left as viewed in FIG. 1), the recess 92 formed in body portion 88 of the actuator will guide the convex part of L-shaped portion 66 into electrical conducting engagement with contact 38 of circuit board 20. This in turn may, for example, close an electrical circuit for switching the power supply, thereby passing current to blade 12. Simultaneously, energy will be stored in the coil 62 associated with convex part 70 of L-shaped portion 66 and, upon removing the force from the actuator, energy will be released from the coil thereby causing the convex part 70 of the free end of L-shaped portion 66 to move out of electrical conducting engagement with contact 38, whereby the electrical circuit will be opened. The same type of pivoting action results with respect to convex part 72 of L-shaped portion 68 and contact 42, when force is applied to the actuator in a rearward fashion. In this regard, it should be noted that as each of theconvex parts engages its respective contact, it, in effect, wipes across the contact so as to provide a more reliable engagement. This wiping action results, in part, from the use of a recess having a greater width than the diameter of the material usedto form the free end of the L-shaped portion that is disposed therein.

In FIG. 7 is shown an exploded perspective, view of a different embodiment of a switching device 100 constructed in accordance with this inventionThe switching device 100 comprises a base member 102, a spring contact member 104 which is identical in construction to spring contact memberv 22, a switch actuator 106 which is similar or identical to switch actuator 28, a cover member 108 which is functionally similar to the arcuately shaped insert 30, and means 110 for attaching the switching unit to a surface of an item. The base member 102 includes a plurality of spaced apart, generally sligned electrical contacts 112, 114 and 116 which are substantially similar to electrical contacts 38, 40 and 42. As shown in FIG. 7, each electrical contact is connected by suitable means to a corresponding one of a plurality of electrically conductive leads.

The cover member 108 includes an annular recess in which is to be disposed the base member 102. The cover member 108 is secured to said base member 102 by the'frictional interface developed between abutting surface portions thereof. The right end of the base member 102 is foreshortened suitably to permit the electrical leads to remain attached thereto when the cover member 108 is mounted thereon. It will be appreciated, however, that the right end of the cover member 108 may be suitably lengthened to accomodate the location of the electrical leads as aforesaid. Although not shown, it will be readily appreciated that any suitable strain relief means may be employed to prevent separation of the electrical leads from the base member 102 when same are objected to a tensile force.

The attaching means 110 as shown comprises a flexible member having opposite surfaces thereof coated with a pressure sentive material 118. Although other suitable attaching means may be employed, it will be readily appreciated that through the use of the attaching means 110 the switching'device 100 may be readily installed or removed from a predetermined location such as the surface of any item. It will also be readily appreciated that the switching device 110 is not only compact in size but also quite inexpensive to manufacture. Further, it will be understood that the switching device 100 may be constructed with either two or three spaced apart generally aligned electrical contacts. Additionally, the switch actuator and the spring contact member may be appropriately modified where only two electrical contacts are used.

From the foregoing, it'should be readily apparent that an electrical switching device especially suitable.

for use as part of an 'electro-surgical tool has been disclosed and that the device is highly reliable, easily manipulated, economical to produce and uncomplicated in design.

It is to be understood that this invention is not limited to the exact embodiment of the device described and shown which is merely by way of illustration and not limitation, as various other forms and modifications will be apparent to those skilled in the art. For example, it will be understood that the integrally formed, elongated spring contact member may comprise an energy absorbing means having a part thereof adapted to be disposed in electrical conducting engagement with one electrical contact of an electrical switching device and a generally L-shaped portion attached to said energy absorbing means wherein said L-shaped portion has a free end adapted to be disposed normally out of electrical conducting engagement with another electrical contact of an electrical switching device.

I claim: 7 I

1. An integrally formed, spring contact member adapted for use in an electrical switching device having at least twospaced apart electrical contacts, said member comprising:

a. an energy absorbing coil the ends of which extend from said coil at an obtuse angle with respect to one'another, one end of said coil being adapted to be disposed in electrical conducting engagement with one electrical contact of an, electrical switching device; and b. a generally L-shaped portion attached to the other end of said energy absorbing coil, said L-shaped portion having a free'end adapted to be disposed normally out of electrical conducting engagement 4. An integrally formed, elongated spring contact member adapted for use in an electrical switching device having at least three longitudinally spaced apart electrical contacts, said member comprising:

a. a center portion adapted to be disposed in electri' cal conducting engagement with the middle electrical contact of an electrical switching device;

b. an energy absorbing coil formed at each end of said center portion with the ends of each said coil extending from each said'coil at an obtuse angle with respect to one another; and

. a generally L-shaped portion attached to each energy absorbing coil and extending outwardly away from said center portion, each L-shaped portion having a free end adapted to be disposed out of electrical conducting engagement with a corresponding one of a remaining contacts of the electrical switching device.

. An electro-surgical switching device, comprising:

a. a housing at least a part of which is cylindrical, said housing having an opening therein;

b. means for mounting atleast a pair of spaced apart electrical contacts within the cylindrical portion of said housing and accessible through said opening therein;

c. an integrally formed, elongated spring contact member, said member including i. an energy .absorging' coil disposed in electrical conducting engagement with one of said spaced apart electrical contacts and ii. a generally L-shaped portion attached to said energy absorbing coil, said L-shaped portion having a free end normally disposed above and out of electrical conducting engagement with the other one of said electrical contacts; and

d. a switch actuator having guide means formed on a surface portion thereof, said switch actuator being mounted on said housing so that said guide means can cooperate with the free end of said L- shaped portion whereby upon application of a force to said actuator said guide means will guide the. free end of said L-shaped portion into electrical conducting engagement with said other one of said electrical contacts thereby closing an electrical circuit and, simultaneously, storing energy in the energy absorbing coil, and, upon removing said force from said actuator, energy will be released from said energy absorbing coil, thereby causing the free end of said L-shaped portion to move out of electrical conducting engagement with said other one of said electrical contacts whereby said closed electrical circuit will be opened.

6. An electro-surgical electrical switching device,

comprising:

a. an elongated tubular housing;

b. a slot formed in the wall of said housing intermediate the ends thereof;

c. a printed circuit board mounted within said tubular housing;

d. at least a pair of spaced apart electrical contacts mounted on said printed circuit board and accessible through said slot formed in the wall of said housing;

e. an integrally formed, elongated spring contact member, said member including i. an energy absorbing means disposed in electrical conducting arrangement with one of said spaced apart electrical contacts and i ii. a generally L-shaped portion attached to said energy absorbing means, said L-shaped portion having a free end normally disposed above and out of electrical conducting engagement with the other one of said electrical contacts; f. an arcuately shaped insert mounted within said slot formed in the wall of saidhousing; and g. a switch actuator pivotally mounted on said insert so as to rotate about an axis generally normal to a line interconnecting said electrical contacts, said actuator including a free end having guide means formed on the lower surface thereof, a part of said L-shaped portion cooperating with said guide means whereby upon application of a force to said actuator, to cause pivotal movement thereof, said guide means will guide the free end of the L-shaped portion into electrical conducting engagement with said other one of said electrical contacts thereby closing an electrical circuit and, simultaneously, storing energy in the energy absorbing means and, upon removing said force from said actuator, energy will be released from said energy absorbing means thereby causing the free end of said L- shaped portion to move out of electrical conducting engagement with said other one of said electrical contacts whereby said closed electrical circuit will be opened. 7. In an electrical switching device as described in claim 6 above in which said energy absorbing means includes a coil the ends of which extend from said coil at an obtuse angle with respect to one another with one end being connected-to said one of said spaced apart electrical contacts and the other end being connected to said generally L-shaped portion.

8. In a three-position electrical switching device: a. a printed circuit board having at least three spaced apart generally longitudinally aligned contacts formed thereon; b. an integrally formed, elongated spring contact member, including iv a center portion having an energy absorbing coil formed at each end thereof with the ends of each said coil extending from each said coil at an obtuse angle with respect to one another,

ii. a generally L-shaped portion attached to a each energy absorbing-coil and extending outwardly away from saidcenter portion, each L-shaped portion having afree end,

iii. the center portion beingdisposed in electrical conducting engagement with the center one of said electrical contacts of said printed circuit board, and

iv. the free end of each L-shaped portion being normally disposed generally above and out of electrical conducting engagement with a corresponding one of the remaining electrical contacts of said printed circuit board; and

c. a rocker-type switch actuatorpivotally mounted to rotate about an axis generally normal to the axis of alignment of the electrical contacts of said printed circuit board, said actuator including guide means formed in the lower surface thereof, a part of each L-shaped portion of said member cooperating with said guide means whereby upon application of a force to said actuator, to cause pivotal movement thereof, the guide means will guide the free end of one of said L-shaped portions into electrical conducting engagement with a corresponding one of the remaining contacts of said printed circuit board thereby closing an electrical circuit and, simultaneously, storing energy in the energy absorbing coil associated with said L-shaped portion, and, upon removing said force from said actuator, energy will be released from said energy absorbing coil thereby causing the free end of said L-shaped portion to move out of electrical conducting engagement with its associated electrical contact whereby said electrical circuit will be opened. 9. An electrical switching device comprising: a. an'elongated tube having i. a cylindrical bore extending therethrough forming a tubular housing, ii. a slot'formed in the wall of said housing intermediate the ends thereof, and

iii. a pair of longitudinally extending, diametrically opposed recesses formed on the inner surface of said housing;

b. a rectangularly shaped printed circuit board mounted within the diametrically opposed recesses formed within said housing, said printed 'circuit board including at least three spaced apart, generally longitudinally aligned electrical contacts, said contacts being accessible through the slot formed in the wall of said housing;

0. an integrally formed, elongated spring contact member, said member including i. a center portion having an energy absorbing coil formed at each end thereof,

ii. a generally L-shaped portion attached to each coil and extending outwardly from said center portion, each L-shaped portion having a generally arcuately shaped free end including a convex part,

iii. the center portion being disposed in electrical conducting engagement with the center one of said electrical contact of said printed circuit board, and

iv. the free end of each L-shaped portion being normally disposed generally above and out of electrical conducting engagement with a corresponding one of the remaining electrical contacts of said printed circuit board;

(1. means for securing said printed circuit board within said housing to prevent inadvertent longitudinal movement thereof relative to said housing;

e. an arcuately shaped insert complementally mounted within the slot formed in the wall of said housing, said insert including i. a pairof longitudinally extending, diametrically opposed recesses formed on the inner surface thereof and disposed in alignment with the recesses of said housing,

ii. a pair of longitudinally extending but radially inwardly directed fingers disposed in contacting engagement with a surface portion of said printed circuit boarcl,

iii. a longitudinally extending slot formed through the wall of said insert and intermediate the ends thereof, and

iv. a pair of aligned recesses formed on the inner surface of said insert and disposed transversely to the longitudinal axis thereof; and

f. a longitudinally extending rocker type switch actuator having transversely disposed trunions disposed within the recesses formed on the inner surfaces of said insert whereby said actuator is disposed to to the axis of alignment of the electrical contacts of said printed circuit board, said actuator including guide means formed on the lower surface thereof, said guide means comprising longitudinally extending recess portions formed in the lower surface thereof adjacent each end of said actuator, a part of each L-shaped portion of said spring contact member being disposed within a corresponding one of said recess portions, said actuator having a finger engaging portion on one side of its pivotal mounting disposed outside of the housing and adapted to be engaged by a finger of an operator for selectively rotating same in opposite directions whereby upon application of a force to said actuator, to cause pivotal movement thereof, the guide means will guide the convex part of the free end of said L-shaped portion into electrical conducting engagement with acorresponding one of the remaining electrical contacts of said printed circuit board thereby closing an electrical circuit and, simultaneously, energy will be stored in the coil associated with a corresponding one of said L-shaped portions, and, upon removing said force from said actuator, energy will be released from said coil thereby causing the convex part of the free end of said L-shaped portion to move out of electrical conducting engagement with its associated electrical contact whereby said electrical circuit will be opened,

10. An electrical switching device as described in claim 1 above in which each each recessportion of said guide means'and the convex part of the spring contact member associated therewith are constructed-to effect a, wiping action across their associated electrical contact when said convex part is brought into electrical v conducting engagement with said electrical contact.

a UNITED STATES PATENT OFFICE CERTIFICATE 'OF CORRECTION Patent No. 801,766 I 'Dafed April 2 1974 Inventofls) v Charles F. Morrison, Jr.

It is certified that error appear's in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

Column 5; Line 50 change "with" to within-- Column 5 Line 53 change "0F" t --0f- Column 6 Line 46, change "-sligned to -,-align'ed' Column 7-, Line 37, har 1ge "engagement" to -engagement Column 8; Line I 25 change "ahsorging" t6 .--absqr bing- Column 'l2 Line ehange "1" to --9--- signeeand seafled' this" 17th day; of December 1974.

Arrest:

I-IcC OY M. GIBSON JR. a Q 7 c. l'iARSHALL DANN Attesting Officer r Comi's'sioner of Patents m I UNITED STATES PATENT OFFICE GERTIFICATE'OF CORRECTION Ptent No. 3,801,766 'Dated April 2 1974 Inventor(s) Charles F. Morrison, Jr.

It is certified that efror appe ar s in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

Column 5; Line 50-,' change "with" to "within" Column 5, Line 53, chauge "oF" t --o- Column 6 Line '46,change "-sligned" to --a1ign ed'-- Column 7-, Line 37, change "cngagement to'--engagement-- Column 8 Line 25, change "aihsorging" t6 --abso r bing-' Column -12 Line 14 uhang "'1" to -.-9

Signed ar xd se a'led' this" 17th day of December 1974.

( EAL) Attest I-IcCOY M. GIBSON r C. MARSHALL DANN Attesting Officer m r Commissioner of Patents

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2567421 *30 Jan 194711 Sep 1951Bruno MartinuzziPush-button switch
US2587399 *13 Dec 194826 Feb 1952Gen ElectricMomentary contact electric switch
US3230334 *29 Jan 196418 Jan 1966Cutler Hammer IncWiping action switch contacts
US3433914 *25 Oct 196718 Mar 1969Ericsson Telefon Ab L MPushbutton switch
US3591747 *29 Dec 19696 Jul 1971Arrow Hart IncLever operated switch with tiltable contact actuator and flexible contacts
US3648001 *11 Dec 19697 Mar 1972Karl D MillsCompact hand held switching device with insertable switching means
US3679853 *25 Jan 197125 Jul 1972Holzer Patent AgMultiple contact system for cam operated switches
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4014343 *25 Apr 197529 Mar 1977Neomed IncorporatedDetachable chuck for electro-surgical instrument
US4034761 *15 Dec 197512 Jul 1977The Birtcher CorporationDisposable electrosurgical switching assembly
US4112950 *22 Oct 197612 Sep 1978Aspen LaboratoriesMedical electronic apparatus and components
US4170234 *11 Oct 19779 Oct 1979Dytek CorporationSystem for use with electro-surgical pencil
US4370980 *11 Mar 19811 Feb 1983Lottick Edward AElectrocautery hemostat
US4443935 *1 Mar 198224 Apr 1984Trident Surgical CorporationProcess for making electrosurgical scalpel pencil
US4545375 *10 Jun 19838 Oct 1985Aspen Laboratories, Inc.Electrosurgical instrument
US4548207 *17 Nov 198222 Oct 1985Mentor O & O, Inc.Disposable coagulator
US4562838 *23 Jan 19817 Jan 1986Walker William SElectrosurgery instrument
US4619258 *2 Mar 198428 Oct 1986Dart Industries Inc.Electrosurgical pencil providing blade isolation
US4655215 *15 Mar 19857 Apr 1987Harold PikeHand control for electrosurgical electrodes
US4669465 *10 Dec 19842 Jun 1987Gv Medical, Inc.For treating obstructions in blood vessels
US4827927 *26 Dec 19849 May 1989Valleylab, Inc.Apparatus for changing the output power level of an electrosurgical generator while remaining in the sterile field of a surgical procedure
US4887593 *26 Jan 198919 Dec 1989Wiley Michael JMethod and apparatus for electrosurgically resectioning an equine soft palate to alleviate occlusion of the breathing passageway
US4922903 *6 Oct 19888 May 1990Everest Medical CorporationHandle for electro-surgical blade
US4949734 *25 Aug 198821 Aug 1990Gerald BernsteinShield for electrosurgical device
US5026370 *2 Jul 198625 Jun 1991Lottick Edward AElectrocautery instrument
US5116332 *8 Feb 199026 May 1992Lottick Edward AElectrocautery hemostat
US5226904 *8 Feb 199113 Jul 1993Conmed CorporationElectrosurgical instrument
US5246440 *13 Sep 199021 Sep 1993Noord Andrew J VanElectrosurgical knife
US5312327 *9 Oct 199217 May 1994Symbiosis CorporationCautery override safety systems endoscopic electrosurgical suction-irrigation instrument
US5314406 *9 Oct 199224 May 1994Symbiosis CorporationEndoscopic electrosurgical suction-irrigation instrument
US5541376 *28 Mar 199430 Jul 1996Valleylab IncSwitch and connector
US5610379 *31 Jan 199611 Mar 1997Nicolay Verwaltungs -GmbhLiquid and gas impenetrable switch
US5800431 *11 Oct 19961 Sep 1998Brown; Robert H.Electrosurgical tool with suction and cautery
US5810810 *6 Jun 199522 Sep 1998Scimed Life Systems, Inc.Apparatus and method for sealing vascular punctures
US5944715 *25 Nov 199631 Aug 1999Gyrus Medical LimitedElectrosurgical instrument
US5951548 *21 Feb 199714 Sep 1999Stephen R. DeSistoSelf-evacuating electrocautery device
US6004319 *20 Jun 199621 Dec 1999Gyrus Medical LimitedElectrosurgical instrument
US6013076 *25 Oct 199611 Jan 2000Gyrus Medical LimitedElectrosurgical instrument
US6015406 *21 Aug 199618 Jan 2000Gyrus Medical LimitedElectrosurgical instrument
US6027501 *20 Jun 199822 Feb 2000Gyrus Medical LimitedElectrosurgical instrument
US6043457 *1 Jul 199828 Mar 2000Hashimoto; KenjiBody hair treating implement
US6056746 *27 Mar 19982 May 2000Gyrus Medical LimitedElectrosurgical instrument
US6063085 *22 Oct 199316 May 2000Scimed Life Systems, Inc.Apparatus and method for sealing vascular punctures
US6090106 *26 Mar 199818 Jul 2000Gyrus Medical LimitedElectrosurgical instrument
US6093186 *18 Dec 199725 Jul 2000Gyrus Medical LimitedElectrosurgical generator and system
US617430826 May 199916 Jan 2001Gyrus Medical LimitedElectrosurgical instrument
US621040517 Jun 19973 Apr 2001Gyrus Medical LimitedUnder water treatment
US623417827 May 199922 May 2001Gyrus Medical LimitedElectrosurgical instrument
US625808812 Aug 199910 Jul 2001Robert H. Brown, M. D., Inc.Switch for electrosurgical tool for performing cutting, coagulation, and suctioning
US626128616 Oct 199817 Jul 2001Gyrus Medical LimitedElectrosurgical generator and system
US627711418 Mar 199921 Aug 2001Gyrus Medical LimitedElectrode assembly for an electrosurical instrument
US62939422 May 199625 Sep 2001Gyrus Medical LimitedElectrosurgical generator method
US630613416 Oct 199823 Oct 2001Gyrus Medical LimitedElectrosurgical generator and system
US630718128 Jan 200023 Oct 2001Kenji HashimotoBody hair treating implement
US63615321 May 199626 Mar 2002Bovie Medical CorporationElectrosurgical pencil
US636487716 Oct 19982 Apr 2002Gyrus Medical LimitedElectrosurgical generator and system
US640274815 Sep 199911 Jun 2002Sherwood Services AgElectrosurgical device having a dielectrical seal
US641650926 Mar 19989 Jul 2002Gyrus Medical LimitedElectrosurgical generator and system
US648220210 Jan 200119 Nov 2002Gyrus Medical LimitedUnder water treatment
US65655613 Apr 200020 May 2003Cyrus Medical LimitedElectrosurgical instrument
US6605934 *31 Jul 200012 Aug 2003Lecroy CorporationCartridge system for a probing head for an electrical test probe
US675582513 Sep 200129 Jun 2004Sherwood Services AgElectrosurgical device having a dielectric seal
US67801808 Mar 200024 Aug 2004Gyrus Medical LimitedElectrosurgical instrument
US682876927 Jun 20037 Dec 2004Lecroy CorporationCartridge system for a probing head for an electrical test probe
US699794117 Mar 200314 Feb 2006Oratec Interventions, Inc.Method and apparatus for treating annular fissures in intervertebral discs
US700937722 Nov 20047 Mar 2006Lecroy CorporationCartridge system for a probing head for an electrical test probe
US70449484 Dec 200316 May 2006Sherwood Services AgCircuit for controlling arc energy from an electrosurgical generator
US713186020 Nov 20037 Nov 2006Sherwood Services AgConnector systems for electrosurgical generator
US71379801 May 200321 Nov 2006Sherwood Services AgMethod and system for controlling output of RF medical generator
US71568426 Oct 20042 Jan 2007Sherwood Services AgElectrosurgical pencil with improved controls
US715684420 Nov 20032 Jan 2007Sherwood Services AgElectrosurgical pencil with improved controls
US717259228 Sep 20046 Feb 2007Desisto Stephen RSelf-evacuating electrocautery device
US723507217 Feb 200426 Jun 2007Sherwood Services AgMotion detector for controlling electrosurgical output
US724129419 Nov 200310 Jul 2007Sherwood Services AgPistol grip electrosurgical pencil with manual aspirator/irrigator and methods of using the same
US72442575 Nov 200317 Jul 2007Sherwood Services AgElectrosurgical pencil having a single button variable control
US72556944 Dec 200314 Aug 2007Sherwood Services AgVariable output crest factor electrosurgical generator
US726768314 Nov 200311 Sep 2007Oratec Interventions, Inc.Method for treating intervertebral discs
US728206114 Nov 200316 Oct 2007Oratec Interventions, Inc.Method of treating intervertebral disc
US730043521 Nov 200327 Nov 2007Sherwood Services AgAutomatic control system for an electrosurgical generator
US730355727 Dec 20044 Dec 2007Sherwood Services AgVessel sealing system
US731170628 Jun 200425 Dec 2007Sherwood Services AgElectrosurgical device having a dielectric seal
US736457724 Jul 200329 Apr 2008Sherwood Services AgVessel sealing system
US739335423 Jul 20031 Jul 2008Sherwood Services AgElectrosurgical pencil with drag sensing capability
US739633627 Oct 20048 Jul 2008Sherwood Services AgSwitched resonant ultrasonic power amplifier system
US740093014 Nov 200315 Jul 2008Oratec Interventions, Inc.Method for treating intervertebral discs
US741643723 Aug 200626 Aug 2008Sherwood Services AgConnector systems for electrosurgical generator
US75039175 Aug 200517 Mar 2009Covidien AgElectrosurgical pencil with improved controls
US751389624 Jan 20067 Apr 2009Covidien AgDual synchro-resonant electrosurgical apparatus with bi-directional magnetic coupling
US762190912 Jun 200824 Nov 2009Covidien AgElectrosurgical pencil with drag sensing capability
US762878616 May 20058 Dec 2009Covidien AgUniversal foot switch contact port
US763790719 Sep 200629 Dec 2009Covidien AgSystem and method for return electrode monitoring
US764712331 Oct 200712 Jan 2010Oratec Interventions, Inc.Method for treating intervertebral discs
US764849921 Mar 200619 Jan 2010Covidien AgSystem and method for generating radio frequency energy
US765149224 Apr 200626 Jan 2010Covidien AgArc based adaptive control system for an electrosurgical unit
US76514933 Mar 200626 Jan 2010Covidien AgSystem and method for controlling electrosurgical snares
US770873519 Jul 20054 May 2010Covidien AgIncorporating rapid cooling in tissue fusion heating processes
US772260130 Apr 200425 May 2010Covidien AgMethod and system for programming and controlling an electrosurgical generator system
US77226078 Nov 200625 May 2010Covidien AgIn-line vessel sealer and divider
US77317178 Aug 20068 Jun 2010Covidien AgSystem and method for controlling RF output during tissue sealing
US77492176 May 20036 Jul 2010Covidien AgMethod and system for optically detecting blood and controlling a generator during electrosurgery
US776669316 Jun 20083 Aug 2010Covidien AgConnector systems for electrosurgical generator
US77669054 Feb 20053 Aug 2010Covidien AgMethod and system for continuity testing of medical electrodes
US77714256 Feb 200610 Aug 2010Covidien AgVessel sealer and divider having a variable jaw clamping mechanism
US777603613 Mar 200317 Aug 2010Covidien AgBipolar concentric electrode assembly for soft tissue fusion
US77760377 Jul 200617 Aug 2010Covidien AgSystem and method for controlling electrode gap during tissue sealing
US778066223 Feb 200524 Aug 2010Covidien AgVessel sealing system using capacitive RF dielectric heating
US778987829 Sep 20067 Sep 2010Covidien AgIn-line vessel sealer and divider
US779445728 Sep 200614 Sep 2010Covidien AgTransformer for RF voltage sensing
US779902613 Nov 200321 Sep 2010Covidien AgCompressible jaw configuration with bipolar RF output electrodes for soft tissue fusion
US779902826 Sep 200821 Sep 2010Covidien AgArticulating bipolar electrosurgical instrument
US78112838 Oct 200412 Oct 2010Covidien AgOpen vessel sealing instrument with hourglass cutting mechanism and over-ratchet safety
US78244003 Mar 20062 Nov 2010Covidien AgCircuit for controlling arc energy from an electrosurgical generator
US782879425 Aug 20059 Nov 2010Covidien AgHandheld electrosurgical apparatus for controlling operating room equipment
US782879827 Mar 20089 Nov 2010Covidien AgLaparoscopic bipolar electrosurgical instrument
US783448416 Jul 200716 Nov 2010Tyco Healthcare Group LpConnection cable and method for activating a voltage-controlled generator
US784616129 Sep 20067 Dec 2010Covidien AgInsulating boot for electrosurgical forceps
US785781218 Dec 200628 Dec 2010Covidien AgVessel sealer and divider having elongated knife stroke and safety for cutting mechanism
US787785219 Sep 20081 Feb 2011Tyco Healthcare Group LpMethod of manufacturing an end effector assembly for sealing tissue
US787785319 Sep 20081 Feb 2011Tyco Healthcare Group LpMethod of manufacturing end effector assembly for sealing tissue
US787903324 Jan 20061 Feb 2011Covidien AgElectrosurgical pencil with advanced ES controls
US78790358 Nov 20061 Feb 2011Covidien AgInsulating boot for electrosurgical forceps
US788753619 Aug 200915 Feb 2011Covidien AgVessel sealing instrument
US789687812 Mar 20091 Mar 2011Coviden AgVessel sealing instrument
US790140027 Jan 20058 Mar 2011Covidien AgMethod and system for controlling output of RF medical generator
US790982317 Jan 200622 Mar 2011Covidien AgOpen vessel sealing instrument
US792271812 Oct 200612 Apr 2011Covidien AgOpen vessel sealing instrument with cutting mechanism
US792295328 Sep 200612 Apr 2011Covidien AgMethod for manufacturing an end effector assembly
US792732824 Jan 200719 Apr 2011Covidien AgSystem and method for closed loop monitoring of monopolar electrosurgical apparatus
US793164914 Feb 200726 Apr 2011Tyco Healthcare Group LpVessel sealing instrument with electrical cutting mechanism
US793505214 Feb 20073 May 2011Covidien AgForceps with spring loaded end effector assembly
US794703912 Dec 200524 May 2011Covidien AgLaparoscopic apparatus for performing electrosurgical procedures
US794704119 Aug 200924 May 2011Covidien AgVessel sealing instrument
US795115022 Feb 201031 May 2011Covidien AgVessel sealer and divider with rotating sealer and cutter
US79553278 Jan 20077 Jun 2011Covidien AgMotion detector for controlling electrosurgical output
US795533221 Sep 20057 Jun 2011Covidien AgMechanism for dividing tissue in a hemostat-style instrument
US795963318 Dec 200614 Jun 2011Covidien AgElectrosurgical pencil with improved controls
US796396510 May 200721 Jun 2011Covidien AgBipolar electrosurgical instrument for sealing vessels
US797232824 Jan 20075 Jul 2011Covidien AgSystem and method for tissue sealing
US797233216 Dec 20095 Jul 2011Covidien AgSystem and method for controlling electrosurgical snares
US801215030 Apr 20046 Sep 2011Covidien AgMethod and system for programming and controlling an electrosurgical generator system
US801682421 Oct 200913 Sep 2011Covidien AgElectrosurgical pencil with drag sensing capability
US80168279 Oct 200813 Sep 2011Tyco Healthcare Group LpApparatus, system, and method for performing an electrosurgical procedure
US8022327 *19 Jun 200920 Sep 2011Michael BlomeyerSwitch, circuitry, and method of assembly for electrosurgical pencil
US802566018 Nov 200927 Sep 2011Covidien AgUniversal foot switch contact port
US80340498 Aug 200611 Oct 2011Covidien AgSystem and method for measuring initial tissue impedance
US807074625 May 20076 Dec 2011Tyco Healthcare Group LpRadiofrequency fusion of cardiac tissue
US808000818 Sep 200720 Dec 2011Covidien AgMethod and system for programming and controlling an electrosurgical generator system
US809696127 Jun 200817 Jan 2012Covidien AgSwitched resonant ultrasonic power amplifier system
US810495623 Oct 200331 Jan 2012Covidien AgThermocouple measurement circuit
US810532324 Oct 200631 Jan 2012Covidien AgMethod and system for controlling output of RF medical generator
US811305727 Jun 200814 Feb 2012Covidien AgSwitched resonant ultrasonic power amplifier system
US812374329 Jul 200828 Feb 2012Covidien AgMechanism for dividing tissue in a hemostat-style instrument
US81286229 Jul 20076 Mar 2012Covidien AgElectrosurgical pencil having a single button variable control
US81424733 Oct 200827 Mar 2012Tyco Healthcare Group LpMethod of transferring rotational motion in an articulating surgical instrument
US814748523 Feb 20093 Apr 2012Covidien AgSystem and method for tissue sealing
US814748917 Feb 20113 Apr 2012Covidien AgOpen vessel sealing instrument
US816293727 Jun 200824 Apr 2012Tyco Healthcare Group LpHigh volume fluid seal for electrosurgical handpiece
US81629405 Sep 200724 Apr 2012Covidien AgVessel sealing instrument with electrical cutting mechanism
US816297315 Aug 200824 Apr 2012Tyco Healthcare Group LpMethod of transferring pressure in an articulating surgical instrument
US81872623 Jun 200929 May 2012Covidien AgDual synchro-resonant electrosurgical apparatus with bi-directional magnetic coupling
US818731215 Oct 200729 May 2012Neurotherm, Inc.Method for treating intervertebral disc
US819243321 Aug 20075 Jun 2012Covidien AgVessel sealing instrument with electrical cutting mechanism
US819747910 Dec 200812 Jun 2012Tyco Healthcare Group LpVessel sealer and divider
US819763315 Mar 201112 Jun 2012Covidien AgMethod for manufacturing an end effector assembly
US820227125 Feb 200919 Jun 2012Covidien AgDual synchro-resonant electrosurgical apparatus with bi-directional magnetic coupling
US82111057 May 20073 Jul 2012Covidien AgElectrosurgical instrument which reduces collateral damage to adjacent tissue
US82162207 Sep 200710 Jul 2012Tyco Healthcare Group LpSystem and method for transmission of combined data stream
US821622323 Feb 200910 Jul 2012Covidien AgSystem and method for tissue sealing
US822141612 Sep 200817 Jul 2012Tyco Healthcare Group LpInsulating boot for electrosurgical forceps with thermoplastic clevis
US822663910 Jun 200824 Jul 2012Tyco Healthcare Group LpSystem and method for output control of electrosurgical generator
US822669715 Oct 200724 Jul 2012Neurotherm, Inc.Method for treating intervertebral disc
US823155313 Jan 200931 Jul 2012Tyco Healthcare Group LpMethod for wireless control of electrosurgery
US823161623 Aug 201031 Jul 2012Covidien AgTransformer for RF voltage sensing
US823162010 Feb 200931 Jul 2012Tyco Healthcare Group LpExtension cutting blade
US823591713 Jan 20097 Aug 2012Tyco Healthcare Group LpWireless electrosurgical controller
US823598721 Nov 20087 Aug 2012Tyco Healthcare Group LpThermal penetration and arc length controllable electrosurgical pencil
US823599223 Sep 20087 Aug 2012Tyco Healthcare Group LpInsulating boot with mechanical reinforcement for electrosurgical forceps
US823599324 Sep 20087 Aug 2012Tyco Healthcare Group LpInsulating boot for electrosurgical forceps with exohinged structure
US823602523 Sep 20087 Aug 2012Tyco Healthcare Group LpSilicone insulated electrosurgical forceps
US824127829 Apr 201114 Aug 2012Covidien AgLaparoscopic apparatus for performing electrosurgical procedures
US82412825 Sep 200814 Aug 2012Tyco Healthcare Group LpVessel sealing cutting assemblies
US824128317 Sep 200814 Aug 2012Tyco Healthcare Group LpDual durometer insulating boot for electrosurgical forceps
US82412845 Jan 200914 Aug 2012Covidien AgVessel sealer and divider with non-conductive stop members
US825199623 Sep 200828 Aug 2012Tyco Healthcare Group LpInsulating sheath for electrosurgical forceps
US82573527 Sep 20104 Sep 2012Covidien AgBipolar forceps having monopolar extension
US825738715 Aug 20084 Sep 2012Tyco Healthcare Group LpMethod of transferring pressure in an articulating surgical instrument
US826792829 Mar 201118 Sep 2012Covidien AgSystem and method for closed loop monitoring of monopolar electrosurgical apparatus
US826792916 Dec 201118 Sep 2012Covidien AgMethod and system for programming and controlling an electrosurgical generator system
US82679354 Apr 200718 Sep 2012Tyco Healthcare Group LpElectrosurgical instrument reducing current densities at an insulator conductor junction
US826793623 Sep 200818 Sep 2012Tyco Healthcare Group LpInsulating mechanically-interfaced adhesive for electrosurgical forceps
US828752828 Mar 200816 Oct 2012Covidien AgVessel sealing system
US82982235 Apr 201030 Oct 2012Covidien AgMethod and system for programming and controlling an electrosurgical generator system
US829822816 Sep 200830 Oct 2012Coviden AgElectrosurgical instrument which reduces collateral damage to adjacent tissue
US829823126 Jan 200930 Oct 2012Tyco Healthcare Group LpBipolar scissors for adenoid and tonsil removal
US829823224 Mar 200930 Oct 2012Tyco Healthcare Group LpEndoscopic vessel sealer and divider for large tissue structures
US83035805 Apr 20106 Nov 2012Covidien AgMethod and system for programming and controlling an electrosurgical generator system
US830358215 Sep 20086 Nov 2012Tyco Healthcare Group LpElectrosurgical instrument having a coated electrode utilizing an atomic layer deposition technique
US830358610 Feb 20096 Nov 2012Covidien AgSpring loaded reciprocating tissue cutting mechanism in a forceps-style electrosurgical instrument
US831778728 Aug 200827 Nov 2012Covidien LpTissue fusion jaw angle improvement
US8319134 *28 Jul 201127 Nov 2012E Surgical, LlcElectrosurgical pencil switch, circuitry, and method of assembly
US83337654 Jun 201218 Dec 2012Covidien AgVessel sealing instrument with electrical cutting mechanism
US834894829 Jul 20108 Jan 2013Covidien AgVessel sealing system using capacitive RF dielectric heating
US835390518 Jun 201215 Jan 2013Covidien LpSystem and method for transmission of combined data stream
US836107128 Aug 200829 Jan 2013Covidien AgVessel sealing forceps with disposable electrodes
US836107219 Nov 201029 Jan 2013Covidien AgInsulating boot for electrosurgical forceps
US836670615 Aug 20085 Feb 2013Cardiodex, Ltd.Systems and methods for puncture closure
US836670927 Dec 20115 Feb 2013Covidien AgArticulating bipolar electrosurgical instrument
US837207222 Nov 201112 Feb 2013Cardiodex Ltd.Methods and apparatus for hemostasis following arterial catheterization
US838275426 Jan 200926 Feb 2013Covidien AgElectrosurgical forceps with slow closure sealing plates and method of sealing tissue
US839409512 Jan 201112 Mar 2013Covidien AgInsulating boot for electrosurgical forceps
US839409611 Apr 201112 Mar 2013Covidien AgOpen vessel sealing instrument with cutting mechanism
US842550430 Nov 201123 Apr 2013Covidien LpRadiofrequency fusion of cardiac tissue
US843523621 Nov 20057 May 2013Cardiodex, Ltd.Techniques for heat-treating varicose veins
US844954010 Feb 200928 May 2013Covidien AgElectrosurgical pencil with improved controls
US84546024 May 20124 Jun 2013Covidien LpApparatus, system, and method for performing an electrosurgical procedure
US846028923 Jan 201211 Jun 2013Covidien AgElectrode with rotatably deployable sheath
US846995621 Jul 200825 Jun 2013Covidien LpVariable resistor jaw
US84699577 Oct 200825 Jun 2013Covidien LpApparatus, system, and method for performing an electrosurgical procedure
US847544723 Aug 20122 Jul 2013Covidien AgSystem and method for closed loop monitoring of monopolar electrosurgical apparatus
US848599316 Jan 201216 Jul 2013Covidien AgSwitched resonant ultrasonic power amplifier system
US848606124 Aug 201216 Jul 2013Covidien LpImaginary impedance process monitoring and intelligent shut-off
US848610720 Oct 200816 Jul 2013Covidien LpMethod of sealing tissue using radiofrequency energy
US849665616 Jan 200930 Jul 2013Covidien AgTissue sealer with non-conductive variable stop members and method of sealing tissue
US850656523 Aug 200713 Aug 2013Covidien LpElectrosurgical device with LED adapter
US851233221 Sep 200720 Aug 2013Covidien LpReal-time arc control in electrosurgical generators
US852385523 Aug 20103 Sep 2013Covidien AgCircuit for controlling arc energy from an electrosurgical generator
US852389810 Aug 20123 Sep 2013Covidien LpEndoscopic electrosurgical jaws with offset knife
US853531225 Sep 200817 Sep 2013Covidien LpApparatus, system and method for performing an electrosurgical procedure
US855109130 Mar 20118 Oct 2013Covidien AgVessel sealing instrument with electrical cutting mechanism
US855689014 Dec 200915 Oct 2013Covidien AgArc based adaptive control system for an electrosurgical unit
US85684447 Mar 201229 Oct 2013Covidien LpMethod of transferring rotational motion in an articulating surgical instrument
US859150616 Oct 201226 Nov 2013Covidien AgVessel sealing system
US859150923 Jun 200826 Nov 2013Covidien LpElectrosurgical pencil including improved controls
US859729227 Feb 20093 Dec 2013Covidien LpElectrosurgical pencil including improved controls
US859729631 Aug 20123 Dec 2013Covidien AgBipolar forceps having monopolar extension
US859729729 Aug 20063 Dec 2013Covidien AgVessel sealing instrument with multiple electrode configurations
US862301723 Jul 20097 Jan 2014Covidien AgOpen vessel sealing instrument with hourglass cutting mechanism and overratchet safety
US86232769 Feb 20097 Jan 2014Covidien LpMethod and system for sterilizing an electrosurgical instrument
US863253623 Jun 200821 Jan 2014Covidien LpElectrosurgical pencil including improved controls
US863673326 Feb 200928 Jan 2014Covidien LpElectrosurgical pencil including improved controls
US86367619 Oct 200828 Jan 2014Covidien LpApparatus, system, and method for performing an endoscopic electrosurgical procedure
US864171315 Sep 20104 Feb 2014Covidien AgFlexible endoscopic catheter with ligasure
US86473404 Jan 201211 Feb 2014Covidien AgThermocouple measurement system
US864734127 Oct 200611 Feb 2014Covidien AgVessel sealer and divider for use with small trocars and cannulas
US866321424 Jan 20074 Mar 2014Covidien AgMethod and system for controlling an output of a radio-frequency medical generator having an impedance based control algorithm
US866321823 Jun 20084 Mar 2014Covidien LpElectrosurgical pencil including improved controls
US866321923 Jun 20084 Mar 2014Covidien LpElectrosurgical pencil including improved controls
US866868817 Jul 201211 Mar 2014Covidien AgSoft tissue RF transection and resection device
US866868919 Apr 201011 Mar 2014Covidien AgIn-line vessel sealer and divider
US867911423 Apr 201025 Mar 2014Covidien AgIncorporating rapid cooling in tissue fusion heating processes
US868501623 Feb 20091 Apr 2014Covidien AgSystem and method for tissue sealing
US86966679 Aug 201215 Apr 2014Covidien LpDual durometer insulating boot for electrosurgical forceps
US873443821 Oct 200527 May 2014Covidien AgCircuit and method for reducing stored energy in an electrosurgical generator
US873444319 Sep 200827 May 2014Covidien LpVessel sealer and divider for large tissue structures
US874090120 Jan 20103 Jun 2014Covidien AgVessel sealing instrument with electrical cutting mechanism
US875333410 May 200617 Jun 2014Covidien AgSystem and method for reducing leakage current in an electrosurgical generator
US876474828 Jan 20091 Jul 2014Covidien LpEnd effector assembly for electrosurgical device and method for making the same
US877794110 May 200715 Jul 2014Covidien LpAdjustable impedance electrosurgical electrodes
US878441728 Aug 200822 Jul 2014Covidien LpTissue fusion jaw angle improvement
US879527428 Aug 20085 Aug 2014Covidien LpTissue fusion jaw angle improvement
US880816123 Oct 200319 Aug 2014Covidien AgRedundant temperature monitoring in electrosurgical systems for safety mitigation
US20110238052 *25 Mar 201029 Sep 2011Tyco Healthcare Group LpShaped Circuit Boards Suitable for Use in Electrosurgical Devices and Rotatable Assemblies Including Same
US20110319892 *28 Jul 201129 Dec 2011Michael BlomeyerElectrosurgical pencil switch,circuitry, and method of assembly
US20130199913 *6 Feb 20138 Aug 2013Guenter LohrElectrical switch device for a machine tool
USRE403888 May 200317 Jun 2008Covidien AgElectrosurgical generator with adaptive power control
USRE40863 *22 Oct 199321 Jul 2009Boston Scientific Scimed, Inc.Apparatus and method for sealing vascular punctures
USRE448347 Dec 20128 Apr 2014Covidien AgInsulating boot for electrosurgical forceps
EP0518784A1 *12 Jun 199216 Dec 1992General Electric Cgr S.A.Built-in switch unit
EP0749137A2 *11 Oct 199518 Dec 1996Wacom Co., Ltd.Side switch mechanism, and stylus pen using same
EP2368511A1 *25 Mar 201128 Sep 2011Tyco Healthcare Group, LPShaped circuit boards suitable for use in electrosurgical devices and rotatable assemblies including same
WO1982002488A1 *25 Jan 19825 Aug 1982William S WalkerElectrosurgery instrument
WO1995026562A1 *3 Mar 19955 Oct 1995Valleylab IncTool and switch and method of assembling
WO2000024329A121 Sep 19994 May 2000Sherwood Serv AgElectrosurgical device having a dielectric seal
WO2013015830A1 *18 Jul 201231 Jan 2013Michael BlomeyerElectrosurgical pencil, switch, circuitry, and method of assembly
Classifications
U.S. Classification200/553, 200/559, 219/240, 200/292, 200/6.00C, 606/42, 200/275, 219/234
International ClassificationH01H1/40, A61B18/14, H01H9/06
Cooperative ClassificationH01H1/403, H01H9/06, A61B18/1402, H01H2300/014
European ClassificationH01H1/40B, H01H9/06, A61B18/14B