US20050234522A1 - Terminal connector assembly for a medical device and method therefor - Google Patents
Terminal connector assembly for a medical device and method therefor Download PDFInfo
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- US20050234522A1 US20050234522A1 US11/167,020 US16702005A US2005234522A1 US 20050234522 A1 US20050234522 A1 US 20050234522A1 US 16702005 A US16702005 A US 16702005A US 2005234522 A1 US2005234522 A1 US 2005234522A1
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- United States
- Prior art keywords
- elongate tube
- terminal
- conductive
- insulative
- recited
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/02—Details
- A61N1/04—Electrodes
- A61N1/05—Electrodes for implantation or insertion into the body, e.g. heart electrode
- A61N1/056—Transvascular endocardial electrode systems
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/372—Arrangements in connection with the implantation of stimulators
- A61N1/375—Constructional arrangements, e.g. casings
- A61N1/3752—Details of casing-lead connections
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/08—Electromagnets; Actuators including electromagnets with armatures
- H01F7/16—Rectilinearly-movable armatures
- H01F2007/1692—Electromagnets or actuators with two coils
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S439/00—Electrical connectors
- Y10S439/908—Contact having two contact surfaces for electrical connection on opposite sides of insulative body
Abstract
A connector assembly of an electrophysiologial device. The connector assembly includes a substrate forming a tube extending from a proximal end to a distal end an electrical circuit formed on the substrate, such as etching or printing, where the substrate is optionally non-conductive. In another option, the connector assembly includes clad wires and/or flexible circuits within an insulated terminal structure.
Description
- This application is a Continuation of U.S. patent application Ser. No. 10/226,374, filed Aug. 21, 2002, which claims the benefit of U.S. Provisional Application No. 60/313,893, filed on Aug. 21, 2001, under 35 U.S.C. 119(e). U.S. patent application Ser. No. 10/226,374 is also a continuation-in-part of U.S. patent application Ser. No. 09/738,401, filed on Dec. 15, 2000 and issued as U.S. Pat. No. 6,643,550, the specifications of which are incorporated by reference herein.
- The present invention relates generally to connector assemblies for electrophysiological applications. More particularly, it pertains to printed circuit and micro terminal connectors for electrophysiological applications.
- Connector assemblies are used to couple electrophysiological devices with a conductor. For instance, a connector is used to couple a cardiac stimulator system such as a pacemaker, an anti-tachycardia device, a cardioverter or a defibrillator with a lead having an electrode for making contact with a portion of the heart.
- When leads with multiple conductors are involved, the conductors are individually, mechanically and electrically coupled with the pulse generator at a proximal end of the multiple conductors. The multiple conductors at the proximal end are electrically insulated from each other to prevent shorts and limit electrical leakage between conductors. However, conventional assemblies are bulky and are relatively large for multi-polar assemblies. Furthermore, conventional assemblies have manufacturing drawbacks, for example, the assembly process is difficult and time consuming.
- Accordingly, what is needed is an improved connector assembly. What is further needed is a multipolar connector having a reduced outer diamter.
- A connector assembly of an electrophysiologial device is provided herein which overcomes the above problems. The connector assembly includes an insulative elongate tube having an outer periphery and a longitudinal axis. The tube further includes at least one groove within the outer periphery of the elongate tube, and a conductor is disposed in each groove. The assembly further includes a conductive ring member with a projection extending from the internal surface. The projection of the ring member is disposed in the groove and is electrically coupled with the conductor. A terminal pin is disposed within the elongate tube, and insulative material is disposed over the insulative elongate tube adjacent to the conductive ring member.
- In another embodiment, a micro terminal is provided that has an outer peripheral surface. The micro terminal includes a tube of insulation, and a first conductor embedded within the tube of insulation, a second conductor embedded within the tube of insulation. A first conductive tab and a second conductive tab extend from the outer peripheral surface to the first conductor and the second conductor, respectively. The tube of insulation has an inner lumen therethrough.
- A method is also provided and includes forming a least one groove within an outer periphery of an insulative elongate tube having a longitudinal axis, disposing a conductor in each groove, placing at least one conductive ring member having an internal surface over the outer periphery of the insulative elongate tube, and disposing a projection extending from the internal surface of the conductive ring member within the at least one groove. The method further includes disposing a terminal pin within the insulative elongate tube, and disposing insulative material over the insulative elongate tube adjacent to the conductive ring member.
- Several options are as follows. For instance, in one option, the method further includes disposing an insulated conductor in each groove, wherein a portion of insulation of the insulated conductor is removed as the insulated conductor is disposed within the groove. In another option, the method further includes forming a plurality of elongate grooves within the elongate tube, placing a plurality of conductive ring members over the outer periphery of the insulative elongate tube, and positioning the projection of each conductive ring member in a different groove from one another.
- In another embodiment, a method includes mechanically and electrically coupling a plurality of conductors with a plurality of rings, positioning the rings and conductors around an inner tube, molding a insulation around the rings, the conductors, and inner tube, mechanically and electrically coupling a coil to a terminal pin, and disposing the coil and the terminal pin through the inner tube.
- Several options for the method are as follows. For instance, in one option, the method further includes snap-fittedly coupling the terminal pin with the inner tube. In another option, the method further includes rotating the terminal pin with the inner tube after snap-fittedly coupling the terminal pin with the inner tube. In yet another option, the method further includes stringing an insulative lead body over the coil. Optionally, mechanically and electrically coupling the conductors with the rings includes staking the conductors with the rings.
- The terminal connectors described herein allow for significantly smaller terminal design. Furthermore, an insulative non-conductive inner lumen has been provided, which is particularly suited for an open lumen lead, assisting in the prevention of electrical shorts due to fluid entry through the open lumen. In addition, the connectors lend themselves to isodiometric, over-the-wire lead designs, with multiple high and low voltage paths. Furthermore, the connector designs allow for the miniaturization of the connectors while simultaneously providing for multiple conductive pathways suitable for use in various lead designs. This further results in increased reliability and manufacturability of the designs with reduced resistance and increased isolative properties.
- These and other embodiments, aspects, advantages, and features of the present invention will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art by reference to the following description of the invention and referenced drawings or by practice of the invention. The aspects, advantages, and features of the invention are realized and attained by means of the instrumentalities, procedures, and combinations particularly pointed out in the appended claims and their equivalents.
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FIG. 1 illustrates a side cut-away view of a connector assembly constructed in accordance with one embodiment. -
FIG. 2 illustrates an end view of a connector assembly constructed in accordance with one embodiment. -
FIG. 3 illustrates a cut-away view of a connector assembly in accordance with another embodiment. -
FIG. 4 illustrates an end view of a connector assembly in accordance with one embodiment. -
FIG. 5 illustrates a perspective view of a terminal pin in accordance with one embodiment. -
FIG. 6 illustrates a perspective view of a conductor in accordance with one embodiment. -
FIG. 7 illustrates a perspective view of a ring constructed in accordance with one embodiment. -
FIG. 8 illustrates a perspective view of a connector assembly in accordance with one embodiment. pFIG. 9 illustrates a perspective view of a connector terminal constructed in accordance with one embodiment. -
FIG. 10 illustrates a portion of a connector assembly in accordance with one embodiment. -
FIG. 11 illustrates a side elevational view of a connector assembly constructed in accordance with one embodiment. -
FIG. 12 illustrates a side-elevational view of a terminal pin in accordance with one embodiment. -
FIG. 13 illustrates an end view of the terminal pin ofFIG. 12 . -
FIG. 14 illustrates a perspective view of a portion of a terminal pin constructed in accordance with one embodiment. -
FIG. 15 illustrates a tube constructed in accordance with one embodiment. -
FIG. 16 illustrates a portion of cross-sectional view of the tube inFIG. 15 . -
FIG. 17 illustrates a cut-away view of a portion of a connector assembly constructed in accordance with one embodiment. -
FIG. 18 illustrates a cross-section view of the connector assembly. -
FIG. 19 illustrates a cross-section view of the connector assembly. -
FIG. 20 illustrates a cross-section view of the connector assembly. -
FIG. 21 illustrates a cross-sectional view of a portion of a connector assembly constructed in accordance with one embodiment. -
FIG. 22 illustrates a perspective view of a portion of a connector assembly constructed in accordance with one embodiment. -
FIG. 23 illustrates a side view of a micro terminal constructed in accordance with one embodiment. -
FIG. 24 illustrates a cut-away view ofFIG. 23 constructed in accordance with one embodiment. -
FIG. 25 illustrates a side view of the conductive pathways ofFIG. 23 constructed in accordance with one embodiment. -
FIG. 26 illustrates a side view of a micro terminal assembly constructed in accordance with one embodiment. -
FIG. 27 illustrates a side view of a micro terminal assembly constructed in accordance with one embodiment. -
FIG. 28 illustrates a side view of a micro terminal assembly constructed in accordance with one embodiment. -
FIG. 29 illustrates a side-elevational view of a pin and ring assembly constructed in accordance with one embodiment. -
FIG. 30 illustrates a cross-sectional view of a portion ofFIG. 29 . -
FIG. 31 illustrates a cross-sectional view of a connector assembly constructed in accordance with one embodiment. -
FIG. 32 illustrates a cross-sectional view of a connector assembly constructed in accordance with one embodiment. -
FIG. 33 illustrates a cross-sectional view of a connector assembly constructed in accordance with one embodiment. -
FIG. 34 illustrates a cross-sectional view of a connector assembly constructed in accordance with one embodiment. -
FIG. 35 illustrates a cross-sectional view of a connector assembly constructed in accordance with one embodiment. -
FIG. 36 illustrates a cross-section view of a connector assembly constructed in accordance with one embodiment. - In the following detailed description, reference is made to the accompanying drawings which form a part hereof, and in which is shown by way of illustration specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention, and it is to be understood that other embodiments may be utilized and that structural changes may be made without departing from the scope of the present invention. Therefore, the following detailed description is not to be taken in a limiting sense, and the scope of the present invention is defined by the appended claims and their equivalents.
- A micro terminal connector assembly and a printed circuit connector assembly are provided herein. The micro terminal connector assembly includes small conductive insulated clad wires and/or flexible circuits which are fed through, or embedded within an insulated terminal structure. Variations on these designs include, but are not limited to, inclusion of elements of co-axial or co-radial lead technology. The printed circuit terminal assembly includes conductive and insulation layers in a multiple conductive terminal connector. Each of these in combinations thereof are described in further detail below.
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FIGS. 1-4 illustrate examples of a feed-throughterminal 110. The feed-throughterminal 110 includes electrical connections which are fed from an outer surface of the terminal to the filars through an insulative material. The feed-throughterminal 110 includes one or moremetallic tabs 112 that serve to connect anouter surface 113 of the feed-through terminal 110 to conductor of the lead. Thetabs 112, in one option, have different lengths. Thetabs 112 advantageously provide a small feed-through connection between an outer peripheral surface and the conductor wire. Thetabs 112 further allow for more insulation to be disposed between the tabs, as opposed to larger components, such as ring electrodes. This further allows the feed-through terminal 110 to have a smaller outer diameter and allows the feed-through terminal 110 to be used in high voltage applications. - A
conductor wire 114 is electrically coupled with thetabs 112, for example, by welding to an inner side of thetabs 112. Thewires 114 are formed of a conductive material, such as titanium, Pt-Ta, etc, and optionally thewires 114 are further individually insulated, in addition to theinsulative material 116. The electrically connectedwires 114 andtabs 112 are molded into aninsulative material 116, such as tecothane, through a molding process, such as insert molding. Filars are welded, swaged, or connected using other connection processes to thewires 114 which, in one option, are fed through the terminal 110. The terminal 110 further includes anopen lumen 118 therein, which has a wall formed of insulative material. A distal end of thewires 114, in one option, is exposed at a distal end of the insulation, as shown inFIG. 3 , and conductive wires are attached thereto. It should be noted thatFIGS. 1 and 2 illustrate a co-radial design. In one option, a first conductor and a second conductor are embedded within the tube of insulation, and, optionally, are co-radial with one another. In another option, a first conductor, second, third, and fourth conductor are embedded within the tube of insulation, and are co-radial with one another. -
FIGS. 3 and 4 illustrate a coaxial design. For example, a first conductor is radially spaced apart from a second conductor, but they share an axis. In another option, the first conductor is disposed around the second conductor. Thetabs FIG. 3 , are in one option, longitudinally spaced from one another. InFIGS. 3 and 4 , three layers ofinsulation 116 are incorporated to form theinsulated lumen 118, and to insulate thewires 114 from one another. It should be further noted that the embodiments shown inFIG. 1 throughFIG. 4 can be combined with the embodiments discussed above and below. -
FIGS. 5-8 illustrate one example of a bipolar feed-throughterminal assembly 120 and portions thereof, incorporating another embodiment. Theterminal assembly 120 includes aterminal pin 122. Theterminal pin 122 is formed as a single unit of, in one option, insulative material, including anelongate tube 123. In another option, theterminal pin 122 and theelongate tube 123 are separate components coupled together, and optionally are formed of different materials. Theelongate tube 123 is formed of insulative material, and includes at least onelongitudinal groove 126 therein. In one option, the groove is an elongate longitudinal groove that is parallel to the longitudinal axis of thetube 123. Disposed within thelongitudinal groove 126 is at least oneconductor 124. One example of aconductor 124 is a flat elongate conductor, as shown inFIG. 6 . Alternatively, other conductors such as wires, coils, or other shapes can be used as well. In another option, conductive material is coated within the groove 126 (FIG. 5 ). Optionally disposed over portions of theconductor 124 is additional insulative material, to insulate theconductor 124 from other rings or electrically conductive components which are slid thereover. In yet another option, the at least oneconductor 124 extends continuously from the terminal pin to anelectrode 145 along thelead body 148, as shown inFIG. 11 . -
FIGS. 9 and 10 illustrate another option for a terminal 100. The terminal 100 includes a plurality ofgrooves 102 formed therein. Thegrooves 102 are configured to receive aninsulated filar 106 therein. The grooves have awidth 104 which is slightly smaller than anouter diameter 108 of the filar 106. Thefilars 106 are forced into thegroove 102. As thefilars 106 are forced into thegroove 102, the insulation of the filar 106 is removed, given the size of thewidth 104 forgroove 102 relative to the filar 106. In one option, the terminal 100 is electrically conductive, and as the insulation of the filar 106 is removed, an electrical connection is made between the filar 106 and the terminal 100. In another option, the terminal 100 is formed of non-conductive material, such as polyetheretherketone (PEEK), and the filar 106 is electrically coupled with another component, such as a ring, as further described below. - In another option, the terminal 100 will consist of multiple strips of metal which are insert molded, into an insulating polymer. Alternatively, the multiple strips of metal are disposed within the insulative polymer in-other manners. Each strip of metal will have the
grooves 102 formed or cut therein which forms the insulation displacement connector. The strips are placed in locations to make connections with electrodes or rings, which are electrically coupled with a pulse generator. The insulation displacement terminal can be used with the various embodiments discussed above and below. - Referring to
FIGS. 7 and 8 , theterminal assembly 120 further includes one or more electrically conductive rings 128. As shown inFIG. 7 , the ring, in one option, has aninterior surface 130 from which aprojection 132 extends. Theprojection 132 of thering 128 is received within thegroove 126, and is electrically coupled with theconductor 124. Theprojection 132 electrically couples theconductor 124 with the header or other electrical stimulation device.FIG. 7 illustrates an example wheremultiple rings 128 are incorporated within theassembly 120. -
FIGS. 11-13 illustrate alternative embodiments for theterminal pin 122. Theelongate tube 123 of theterminal pin 122 includes a plurality ofgrooves 126 within the periphery of theelongate tube 123, for example, fourgrooves 126 suitable for use in a quad-polar design, shown inFIGS. 11-13 . It should be noted that any number of grooves can be used, including a single groove. Alternatively, twogrooves 126 are formed in the elongate tube of the terminal pin 122 (FIG. 14 ). At least one conductor 124 (FIG. 9 ) is inserted into each of thegrooves 126. Since thegrooves 126 are disposed within insulative material for theterminal pin 122, each of theconductors 124 are electrically isolated from one another, and do not add to the overall outer diameter of theterminal assembly 120. -
FIG. 11 illustrates aconnector assembly 140 formed from aterminal pin 122 ofFIGS. 12 and 13 . Four rings 142, each having an outer diameter of 0.072 inches, are disposed over theterminal pin 122, and each is electrically coupled with a conductor disposed within the grooves. An outer diameter of 0.072 inches is achievable due to the construction of theterminal pin 122 andring 142. The inner diameter of the lumen is electrically isolated from each of the fourrings 142, and the fourrings 142 are electrically isolated from one another. All of the dielectric paths for this quad-polar configuration were confirmed to be electrically isolated at 1,500 volts AC. Previously, it was not possible to have a bipolar 0.072 inch outer diameter terminal. -
FIGS. 15-20 illustrate another embodiment including a printedcircuit terminal 150. The printedcircuit terminal 150 includes one or more printedcircuits 152 thereon. The printedcircuits 152 or conductive paths would be printed on a substrate in the form of atube 154, where thetube 154 is formed of non-conductive material. In another option, thetube 154 is formed of electrically conductive material. In another option, a layer ofinsulation 156 is disposed over thetube 154, and the printedcircuits 152 are formed on the layer ofinsulation 156. In addition, a layer ofinsulation 155 is disposed in a layer over the printedcircuits 152. One ormore rings 158 are disposed on theassembly 150. Anelectrical connection 160 would then be formed in between thering 158 and the printedcircuits 152, where theelectrical connection 160 is fed through the insulative material. Each of the individual printedcircuits 152 would be electrically isolated from each other by the spacing on theinsulative material 156. The printed circuits can be printed on the pin orsubstrate 154, alternatively they can be etched or otherwise formed thereon. One example of material for use with the insulative material is KAPTON™ by Dupont. Examples for the conductive material include, but are not limited to, gold, platinum, titanium, copper, or nickel. The connections in between the ring and the printed circuits are formed, for example, by an exposed pad with feed-through wires, a wire through hole, or fingers which extend beyond the flexible circuits, as further discussed above and below. -
FIG. 21 illustrates one example of connecting the etched pathways or conductive paths with the terminal byinsulated rings 170 which are connected to set screws. Therings 170 have insulatingmaterial 172 such as polyurethane, silicone dioxide, etc., as the insulative material. Thering 170 further includes aconductive portion 174, which is formed of conductive material, such as, but not limited to, titanium, gold, or platinum. Asmall section 176 of an inside of aring 170 is not insulated and can make an active connection with one of the etched conductive pathways (see 180,FIG. 22 ). -
FIG. 22 illustrates another example of a printed circuit terminal which includes two etchedpathways 180 thereon, including a first pathway 181 and asecond pathway 183. The first pathway 181 and thesecond pathway 183 are electrically isolated from one another. It should be noted that additional pathways are contemplated and considered within the scope of this application. The first andsecond pathways 181, 183 are electrically coupled with afirst ring 182 and asecond ring 184, respectively.Ring 182 is electrically isolated at 186 such that it is isolated from thesecond pathway 183.Ring 182 is electrically coupled at 188 with the first pathway 181 to form the electrical connection thereto. -
FIG. 23 illustrates another variation of a micro terminal concept. A printed circuit terminal pin 200 includes apin 202 and a layer ofinsulation 204 with a plurality ofelectrodes 206 therein. Optionally,pin 202 is formed of metal material The plurality ofelectrodes 206 are electrically isolated from one another within the layer ofinsulation 204. The plurality ofelectrodes 206 are coupled with conductive pathways 180 (FIG. 25 ) which are etched on the pin, andinsulation 204 is disposed over the conductive pathways. The conductive pathways extend between the electrode 206 (A, B, C, and D) and the attachment sites, A′, B′, C′, and D′. As shown inFIGS. 26 and 27 , the rings, are coupled with their respective electrodes A, B, C, andD. Wires 218 are electrically coupled with the attachment sites A′, B′, C′, and D′ and extend along the lead body. As shown inFIG. 28 ,insulation 219 is disposed overinsulation 204 and over attachment sites A′, B′, C′, and D′, and the terminal is optionally isodiametric. In another option, no rings are used, and theelectrode 206 is used for electrical connection, for example, within a header. In another option, thewires 218 are embedded within theinsulation 204, such thatadditional insulation 219 is not necessary. Still further, in another option, the conductive pathways compriseflexible circuits 214 which are disposed within the insulation. Electrical connection between the pin and the device is made by disposingelectrical connectors 206 within the insulative material 216, where theelectrical connectors 206 extend to various depths to reach the individual, respectiveflexible circuits 214. Filars of the lead are electrically coupled with a circuit trace of theflexible circuit 214. It should be noted that for this embodiment, as well as for above and below discussed embodiments, theflexible circuit 214 includes, but is not limited to, electrical paths which are printed, etched, or embedded within or on insulative material and formed into the appropriate configuration. In yet another option, the micro terminal includes alumen 207. -
FIGS. 30-31 illustrate another option of the printed circuit terminal. The printed circuit terminal includes, for example, asubstrate 220, with a terminal ring disposed there over. A layer of insulative material, such as polyimid, i.e., KAPTON™ by Dupont, is disposed over thesubstrate 220. The layer of insulative material 222 has a thickness, for example, in the range of 0.0002 inches to 0.0010 inches. Disposed over the insulative material 222, is a layer for theconductive path 224. Thelayer 224, in one embodiment, comprises Pt, for the conductive path. Theterminal ring 226 is slid over the layers of 224 and 222 and is joined with the outerconductive path 224 with, for example, by conductive adhesive, welding, or other fixation features which would form the electrical connection thereto. One or more filars 228 are electrically coupled with the outer conductive layer orpath 224. -
FIGS. 32-35 show one example of various cross-sectional views of the printed circuit tube for the terminal connector, for example, of a quad-polar . Each of the cross-section views include aninsulative portion 232, as well as aconductor 234. Each of theconductors 234 shown individually inFIGS. 32-35 allow for the multiple rings to be electrically connected with the tube, for example, forming a quad polar relationship thereto, while also maintaining an isodiametric shape for the terminal pin. In addition, theFIGS. 32-35 illustrate how theconductors 234 are spaced peripherally from one another, for example, at 0, 90, 180, and 270 degrees around the diameter of the pin. In another option, theconductors 234 are longitudinally spaced from one another. It should be noted that other configurations, for example, with more or fewer electrically conductive portions can be configured and arranged on the printed circuit tube. It should be further noted that the embodiments shown inFIGS. 32-35 can be combined with all of the above discussed embodiments. - In another embodiment, a method for forming a connector assembly of an electrophysiological device is provided herein. The method includes insert molding a first flexible circuit within tubular insulating material, and electrically coupling a connector with the first flexible circuit. In one option, the method further includes molding a second flexible circuit within the tubular insulating material, where the second flexible circuit forms a second layer over the first flexible circuit. In another option, the method includes electrically coupling a second connector with the second flexible circuit, and the second connector has a different depth within the tubular insulating material than the first connector.
- A method is also provided and includes forming a least one groove within an outer periphery of an insulative elongate tube having a longitudinal axis, disposing a conductor in each groove, placing at least one conductive ring member having an internal surface over the outer periphery of the insulative elongate tube, and disposing a projection extending from the internal surface of the conductive ring member within the at least one groove. The method further includes disposing a terminal pin within the insulative elongate tube, and disposing insulative material over the insulative elongate tube adjacent to the conductive ring member.
- Several options are as follows. For instance, in one option, the method further includes disposing an insulated conductor in each groove, wherein a portion of insulation of the insulated conductor is removed as the insulated conductor is disposed within the groove. In another option, the method further includes forming a plurality of elongate grooves within the elongate tube, placing a plurality of conductive ring members over the outer periphery of the insulative elongate tube, and positioning the projection of each conductive ring member in a different groove from one another.
- In another embodiment, referring to
FIG. 36 , a method includes mechanically and electrically coupling a plurality ofconductors 250 with a plurality ofrings 252, for example, by staking theconductors 250 with therings 252. The method further includes positioning therings 252 andconductors 250 around aninner tube 254, molding aninsulation 258 around therings 252, theconductors 250, andinner tube 254, for example by injecting an insulative material to fix the components and place and complete the assembly except for the pin component. The rings, cables, and inner tube can be provided in a single overmolded assembly. The method further includes mechanically and electrically coupling a coil to aterminal pin 256, and disposing the coil and the terminal pin through theinner tube 254. - Several options for the method are as follows. For instance, in one option, the method further includes snap-fittedly coupling the terminal pin with the inner tube. In yet another option, the method further includes stringing an insulative lead body over the continuously extending conductors. Optionally, mechanically and electrically coupling the conductors with the rings includes coupling continuously extending conductors with the rings, and coupling the continuously extending conductors with an electrode (see
FIG. 11 ). The method allows for achieving an outer diameter of approximately 3 mm, and in one option, is designed for a simple snap-assembly where latches of the pin and tube engage one another. Other types of snap-fit designs are available as well. The molding operation distinctly locates components consistently, and reliably isolates the conductors from one another by providing redundant insulation between components. - Advantageously, the above-described terminal connectors allow for significantly smaller terminal design. Furthermore, an insulative non-conductive inner lumen has been provided, which is particularly suited for an open lumen lead, assisting in the prevention of electrical shorts due to fluid entry through the open lumen. In addition, the above-described connectors lend themselves to isodiametric, over-the-wire lead designs, with multiple high and low voltage paths. Furthermore, the above connector designs allow for the miniaturization of the connectors while simultaneously providing for multiple conductive pathways suitable for use in various lead designs. This further results in increased reliability and manufacturability of the designs with reduced resistance and increased insulative properties.
- It is to be understood that the above description is intended to be illustrative, and not restrictive. Many other embodiments will be apparent to those of skill in the art upon reading and understanding the above description. It should be noted that embodiments discussed in different portions of the description or referred to in different drawings can be combined to form additional embodiments of the present invention. The scope of the invention should, therefore, be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.
Claims (20)
1. A terminal assembly for a medical device, the terminal assembly comprising:
an insulative elongate tube having an outer periphery and a longitudinal axis;
at least three conductors disposed along the elongate tube;
at least three conductive ring members having an internal surface, each ring disposed over the elongate tube;
a conductive member electrically coupling each conductive ring member with its respective conductor;
a terminal pin extending from a pin proximal end to a pin distal end, the terminal pin disposed within the insulative elongate tube; and
insulative material disposed over the insulative elongate tube adjacent to the conductive ring members.
2. The terminal assembly as recited in claim 1 , wherein each ring member has at least one projection extending from the internal surface, the insulative elongate tube having a plurality of grooves within the tube, each projection disposed in its respective groove.
3. The terminal assembly in claim 2 , wherein an outer diameter of a portion of the insulated conductors are greater than a width of the grooves.
4. The terminal assembly as recited in claim 1 , further comprising a lead body mechanically coupled with the terminal pin, the lead body including electrodes disposed therealong, wherein the at least three conductors extend continuously from the conductive ring members to the electrodes.
5. The terminal assembly as recited in claim 1 , wherein the conductive member is a feed-through terminal.
6. The terminal assembly as recited in claim 1 , wherein the rings have an insulated portion and a conductive portion.
7. The terminal assembly as recited in claim 1 , wherein the at least three conductors are printed along the elongate tube.
8. The terminal assembly as recited in claim 1 , wherein the terminal pin is snap fittedly coupled with the insulative elongate tube.
9. The terminal assembly as recited in claim 1 , wherein the at least three conductors are insulated conductors, and the insulated conductors are electrically coupled with respective conductive ring members.
10. A method comprising:
forming a terminal assembly including disposing one or more conductors along an outer periphery of an insulative elongate tube having a longitudinal axis;
disposing one or more conductors along tube includes printing a conductive path on the elongate tube;
placing at least one conductive ring member having an internal surface over the outer periphery of the insulative elongate tube;
electrically coupling each conductive ring member with a respective conductive path;
disposing a terminal pin within the insulative elongate tube; and
disposing insulative material over the insulative elongate tube adjacent to the conductive ring member.
11. The method as recited in claim 10 , further comprising disposing multiple conductive ring members over the tube, and electrically isolating each ring from each other.
12. The method as recited in claim 10 , wherein printing the conductive path includes etching the conductive path on the elongate tube.
13. The method as recited in claim 10 , further comprising snap-fittedly coupling the terminal pin with the elongate tube.
14. The method as recited in claim 10 , further comprising providing the rings with an insulated portion and a conductive portion.
15. A terminal assembly comprising:
an insulative elongate tube having one or more conductors printed thereon;
at least one conductive ring member having an internal surface; and
the at least one conductive ring member disposed over the insulative elongate tube, the at least one conductive ring electrically coupled with the one or more conductors.
16. The terminal assembly as recited in claim 15 , further comprising a terminal pin disposed within insulative elongate tube.
17. The terminal assembly as recited in claim 15 , further comprising insulative material disposed over insulative elongate tube adjacent to the conductive ring member.
18. The terminal assembly as recited in claim 15 , further comprising a feed-through coupled between the ring and the conductor.
19. The terminal assembly as recited in claim 15 , wherein the terminal pin is snap fittedly coupled with the insulative elongate tube.
20. The terminal assembly as recited in claim 15 , wherein at least three conductive rings are disposed over the insulative elongate tube.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/167,020 US20050234522A1 (en) | 2000-12-15 | 2005-06-24 | Terminal connector assembly for a medical device and method therefor |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/738,401 US6643550B2 (en) | 2000-12-15 | 2000-12-15 | Multi-polar connector |
US31389301P | 2001-08-21 | 2001-08-21 | |
US10/226,374 US6912423B2 (en) | 2000-12-15 | 2002-08-21 | Terminal connector assembly for a medical device and method therefor |
US11/167,020 US20050234522A1 (en) | 2000-12-15 | 2005-06-24 | Terminal connector assembly for a medical device and method therefor |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/738,401 Continuation-In-Part US6643550B2 (en) | 2000-12-15 | 2000-12-15 | Multi-polar connector |
US10/226,374 Continuation US6912423B2 (en) | 2000-12-15 | 2002-08-21 | Terminal connector assembly for a medical device and method therefor |
Publications (1)
Publication Number | Publication Date |
---|---|
US20050234522A1 true US20050234522A1 (en) | 2005-10-20 |
Family
ID=35097289
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/226,374 Expired - Lifetime US6912423B2 (en) | 2000-12-15 | 2002-08-21 | Terminal connector assembly for a medical device and method therefor |
US11/167,020 Abandoned US20050234522A1 (en) | 2000-12-15 | 2005-06-24 | Terminal connector assembly for a medical device and method therefor |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
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US10/226,374 Expired - Lifetime US6912423B2 (en) | 2000-12-15 | 2002-08-21 | Terminal connector assembly for a medical device and method therefor |
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US (2) | US6912423B2 (en) |
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US9138576B2 (en) | 2011-10-28 | 2015-09-22 | Medtronic, Inc. | Lead end having inner support |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090012578A1 (en) * | 2006-02-02 | 2009-01-08 | Vygon | Neurostimulation Catheter |
US8798766B2 (en) * | 2006-02-02 | 2014-08-05 | Vygon | Neurostimulation catheter |
US8923989B2 (en) | 2006-08-31 | 2014-12-30 | Cardiac Pacemakers, Inc. | Lead assembly including a polymer interconnect and methods related thereto |
US7917229B2 (en) * | 2006-08-31 | 2011-03-29 | Cardiac Pacemakers, Inc. | Lead assembly including a polymer interconnect and methods related thereto |
US8364282B2 (en) | 2006-08-31 | 2013-01-29 | Cardiac Pacemakers, Inc. | Lead assembly including a polymer interconnect and methods related thereto |
US8738152B2 (en) | 2006-08-31 | 2014-05-27 | Cardiac Pacemakers, Inc. | Lead assembly including a polymer interconnect and methods related thereto |
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US8442648B2 (en) | 2008-08-15 | 2013-05-14 | Cardiac Pacemakers, Inc. | Implantable medical lead having reduced dimension tubing transition |
US8565893B2 (en) | 2008-08-15 | 2013-10-22 | Cardiac Pacemakers, Inc. | Implantable medical lead having reduced dimension tubing transition |
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WO2013062863A1 (en) * | 2011-10-28 | 2013-05-02 | Medtronic, Inc. | Lead end having slotted member |
US9138576B2 (en) | 2011-10-28 | 2015-09-22 | Medtronic, Inc. | Lead end having inner support |
US9421362B2 (en) | 2011-10-28 | 2016-08-23 | Medtronic, Inc. | Modular lead end |
US9713705B2 (en) | 2011-10-28 | 2017-07-25 | Medtronic, Inc. | Modular lead end |
US9962539B2 (en) | 2011-10-28 | 2018-05-08 | Medtronic, Inc. | Modular lead end |
US10076657B2 (en) | 2011-10-28 | 2018-09-18 | Medtronic, Inc. | Lead end having slotted member |
US10413718B2 (en) | 2011-10-28 | 2019-09-17 | Medtronic, Inc. | Modular lead end |
US9480141B1 (en) | 2012-09-20 | 2016-10-25 | Junis Hamadeh | Heat sink device or heat sink assembly |
US9901725B2 (en) | 2012-10-01 | 2018-02-27 | Bayer Healthcare Llc | Overmolded medical connector tubing and method |
US11071869B2 (en) | 2016-02-24 | 2021-07-27 | Cochlear Limited | Implantable device having removable portion |
Also Published As
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US6912423B2 (en) | 2005-06-28 |
US20030074031A1 (en) | 2003-04-17 |
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