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Publication numberUS3060972 A
Publication typeGrant
Publication date30 Oct 1962
Filing date22 Aug 1957
Priority date22 Aug 1957
Publication numberUS 3060972 A, US 3060972A, US-A-3060972, US3060972 A, US3060972A
InventorsSheldon Gilbert J
Original AssigneeBausch & Lomb
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Flexible tube structures
US 3060972 A
Images(3)
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Description  (OCR text may contain errors)

Oct. 30, 1962 G. J. SHELDON 3,060,972

FLEXIBLE TUBE STRUCTURES Filed Aug. 22, 1957 3 Sheets-Sheet 1 IO F16. l

INVENTOR.

GILBERT J. SHELDON BY fifl-mak ATTORNEXS Oct. 30, 1962 G. J. SHELDON 3,050,972

FLEXIBLE TUBE STRUCTURES Filed Aug. 22, 1957 r 3 SheetsSheet 2 74 INVENTOR.

Gl LBERT J. SHELDON ATTORNEYS Oct. 30, 1962 G. J. SHELDON 3,060,972

FLEXIBLE TUBE STRUCTURES Filed'Aug. 22, 1957 s Sheets-Sheet s INVENTO GILBERT J. SHEL N BY M A TTORNE'YS United States Patent Office 3,060,972 Patented Oct. 30, 1962 1 3,060,972 FLEXIBLE TUBE STRUCTURES Gilbert J. Sheldon, Irondequoit, N.Y., assignor to Bausch & Lornb Incorporated, a corporation of New York Filed Aug. 22, 1957, Ser. No. 67%,566 Claims. (Cl. 138-120) The present invention relates to flexible tube structures and particularly to a tube structure the flexing of which may be controlled both to its extent and in its radius of curvature.

The present invention is particularly adapted for endoscopic devices which heretofore have been restricted in bending in only one direction and to a single extent and radius of curvature. In the use of the present day endoscope for viewing the walls of a cavity of the human body, it has been necessary to reposition the endoscope a number of times into the cavity in order to examine even a portion of the cavity walls, all at great discomfort to the patient. Since the endoscopes currently being utilized have restricted flexing capabilities, complete viewing of the walls of the cavity has been impossible.

The flexible tube of the present invention is also capable of being utilized as a housing for an optical system for other purposes, such as, for viewing remote objects around corners or in other inaccessible places. When suitably encased with a plastic or rubber sheathing, the present invention may be adapted for underwater usage wherein movement of the submerged end may be effected by suitable controls located at the dry end. The present invention is also adapted to support a tool at its working end so that manipulation of the tool can be accomplished at the remote control end thereof.

In any of its many uses, the flexible tube structure of the present invention may be easily disassembled and reassembled if it is desired to lengthen or shorten the structure or to condition the structure for a predetermined radius of curvature. As a housing for any number of working tools such as an optical system for endoscopic use, the structure may be opened up, so to speak, for permitting any modification, removal or insertion of the optical system or part thereof. Various elements of the tube structure itself may be interchanged or replaced, added or removed. In its essence, the present tube structure is composed of various building blocks which may be built up in various arrangements for a number of purposes.

The primary object of the present invention is to provide a flexible tube structure the flexing of which is adapted to be controlled both as to extent and radii of curvature.

Another object of the invention is to provide a flexible tube structure which may be used for supporting working tools and for controlling manipulation thereof.

Still another object of the invention is to provide a flexible tube for endoscopic devices or other examining instruments which is simple in structure, economical to manufacture and maintain, and capable of being modified with a minimum amount of effort.

These and other objects and advantages reside in certain novel features of construction, arrangement and combination of parts as will hereinafter be more fully described, pointed out in the appended claims and will appear when taken in conjunction with the drawing wherein:

FIG. 1 is a side elevational view of one form of the flexible tube structure constructed in accordance with the invention;

FIG. 2 is a side elevational view of the details of the structure of FIG. 1, parts being in section for better illustration and showing various shapes that the structure may assume;

FIG. 3 is a cross-sectional view taken along line 3-3 of FIG. 2;

FIG. 4 is a fragmentary perspective view of a portion of the tube structure illustrating the manner in which the structure is assembled and arranged for receiving tools therein;

FIG. 5 is an exploded perspective view of one of the tube sections showing the component parts thereof in greater detail;

FIG. 6 is a side elevational view of another form of the flexible tube structure;

FIG. 7 is similar to FIG. 6 but illustrates some of the various shapes the tube structure may assume;

FIG. 8 is a cross-sectional View taken along line 8-43 of FIG. 6;

FIG. 9 is a side elevational view, parts being in section, of another modified form of the present invention;

FIG. 10 is an exploded perspective view of the structure shown in FIG. 9;

FIGS. 11 and 12 are similar to FIG. 9 but illustrate successive flexing of the tube structure; and

FIG. 13 is a plan view of a modified tube section.

Referring now to the drawings, and more particularly to FIGS. 1-5, there is shown a flexible tube structure generally indicated by the reference numeral 10 and comprising a plurality of tube sections 12 arranged in an end to end relationship. As shown in FIGS. 3 and 5, each of the tube sections 12 is composed of two identical semi-circular elements 14, 16, each of which is formed with a pair of axially spaced connecting lugs 18 at one end and a single lug 20 at the other end. When the elements 14, 16 are joined together to form a single tube section, the lug 20 of each of the elements is retained between the two lugs 18 of the other element. The lugs 18 and 20 are suitably shaped so that when the elements are joined, the outer surface of the tube section 12 is unbroken and conforms with the surrounding circular surface. As shown in FIGS. 2 and 3, the lugs 18 and 20, when interlocked, form continuous transverse thickened portions or ridges which extend radially inwardly slightly from the circumference of the tube section and are diametrically opposed.

A similar pair of ridges 22 are formed on the inner wall surfaces of the tube sections and these are arranged in diametrically opposed positions at about a displacement from the ridges formed by the lugs 18 and 20. Each of the ridges is formed with openings which in the present embodiment are in the form of apertures 24, 26, respectively, and in the case of the lugs 18 and 20, the apertures 24 extend in axial alignment when the elements 14, 16 are joined together, as shown in FIGS. 1 and 2.

The apertures 24 in each of the tube sections are adapted to accommodate a flexible cable 28 which extends through the length of the tube structure 10. Similarly, the apertures 26 are adapted to accommodate another flexible cable 30. It will be apparent that when the tube sections 12 are arranged in axial alignment as shown in FIG. 1, the apertures 24 of each of the tube sections are in axial alignment with the corresponding apertures in the preceding tube section and the apertures 26 of each of the tube sections are in axial alignment with the corresponding apertures in the preceding tube section.

One end of each of the cables 28, 30 may be directly secured to the terminal tube section 32 or connected indirectly thereto by means of suitable sleeves 34 which are made small enough to be swaged upon the ends of the cables and may be suitably welded to the section 32. The other ends of the cables 28 are similarly encircled by sleeves 36 with the ends swaged thereto. A coil spring 38 encircles each of the cables 28 and is held in com- 3 pression between the sleeve 36 and the adjacent tube section. The cables 30 may be connected together and held taut around a suitable control pulley, this structure being shown in FIG. 7 and will be described hereinafter.

A plurality of spacer annular elements 40 which may be in the form of washers or sleeves are positioned on the cables between some of the tube sections and for purposes of this invention, such washers or sleeves are utilized in that portion of the tube structure where flexing thereof is desired. As shown in FIG. 1, the flexed portion of the tube structure 10 is provided with these annular elements. To complete the structure of the embodiment of FIG. 1, the entire structure 10 may be suitable covered with a rubber or plastic sheathing 42 which would provide a smooth and continuous finish for the structure and perm-it the use of the structure in water or other moist surrounding without aifecting the elements of the structure.

In operation, a pulling force exerted upon one of the cables 30 will produce flexing of the terminal portion of the tube structure, or that end illustrated in the righthand portion of the structure of FIG. 1. The amount or extent of flexing is controlled by the amount of force exerted upon the cable 30 and it is possible to flex this end of the structure until the same assumes substantially the shape of a complete circle. A desired radius of ourvature or any change thereof is determined by the axial length of the annular elements 40, and in the case of washers, this would be determined by the thickness thereof, and in the case of sleeves, by their length. If a large radius of curvature is desired, washers or sleeves having short lengths should be utilized, and in the event a sharp flexing, or one having a small radius, is desired, sleeves having relatively long lengths should be utilized. This relationship is illustrated in FIG. 2 wherein use of the large sleeves 44 has permitted a sharp flexing of the tube structure and small sleeves 46 have permitted only a slight flexing. Any other desired shape of the flexed portion of the tube structure may be planned by simply using various sizes of spacer washers or sleeves.

Radii of curvature may also be varied by utilizing tube sections having other axial dimensions. In the embodiment of FIGS. 1-5, the tube sections are relatively wide, that is, their axial dimensions are long when compared to the embodiments shown in FIGS. 6-l3. In FIG. 2, if the tube sections were replaced by ones having a smaller width, or in fact, by a tube section which is in the form of a plate, the flexing would even be sharper if the same number of tube sections are used. On the other hand, if a greater number of these plates or narrow tube sections are used, the radii of curvature are progressively increased. Therefore, the width of the tube sections, whether they be in the form plates or a size similar to that shown in FIG. 2, or the number of these tube sections utilized, will each contribute to the control of the raddi of curvature.

For purposes of further description the cables 30 are considered as control cables while the cables 28 are to be treated as tying cables. A pulling force exerted on either of the control cables 30 will flex the cable :in the plane defined by both the cables 34) and, the cables 28 will retain the tube sections to maintain the length of the tube structure 10, along its axis, which during flexing will assume the form experienced by the cables 28, substantially constant. During a flexing operation, the coil springs 38 serve as override mechanism and to assist in maintaining the length of the tube structure, along its axis, substantially constant. If the spacers 40 were perfectly rounded at their ends and of a predetermined radii of curvature, there would be no necessity for the coil springs 38 since, no matter what shape or form the tube structure assumes, its axial length would never vary and the anchor sleeves 34, 36 for the cables 28 would be suflicient for maintaining the length of the tube structure constant. However, since there is no need in the present invention for perfectly machined parts, the coil springs 38 cooperate with the anchor sleeve 36 to permit slight changes in the length of the tube structure if the occasion arises. Any change in length will be extremely small and will be caused solely by the inaccuracies of the various elements of the tube structure especially in the spacers 40. Thus, the tube sections are constantly held together during flexed or non-flexed conditions of the tube structure and the constant length of the tube structure may be attributed to the anchor sleeves 36 which are swaged to the ends of the cables 28 or to the use of the coil spring 38 in conjunction with the sleeve 36.

It will be apparent that the tube structure 10 is capable of moving the terminal section 32 in a relatively wide arc with the radius of curvature thereof struck from a point between the last tube section which does not flex and the adjacent tube section which does flex, such point being illustrated in FIG. 1, at 48. For endoscopic use, this characteristic has the particular advantage in that different parts of a cavity under inspection may be viewed without the necessity of continual withdrawal of the tube structure and rotation thereof during inspection.

Another advantage of the present invention is the simplicity of assembly and the arranging of worktools within the tube structure. In FIG. 4, a portion of the tube structure is illustrated with one of the tying cables 28 removed and the individual tube sections opened up, so to speak. To accomplish this, one of the cables. 28 is disengaged from its anchor sleeve 34 and pulled through the lugs 18, 20, whereupon one of the elements 14, 16 in each tube section is pivoted about the remaining tying cable 28. With all of the tube sections in this position, any desired optical system or other equipment may be installed, modified or replaced in the interior of the tube structure.

The present invention is also adapted to serve as a flexible control linkage for a tool which may be conveniently mounted at the terminal tube section 32 thereof. In an arrangement of this sort, the tube structure 10 would serve as a remote control linkage for the tool and would provide a flexible housing for any electrical wires, hoses, flexible shafts, etc. for the tool.

The embodiment of FIGS. 6-8 is similar to that of FIGS. 1-5 and differs therefrom only in compounding the various functions of the latter. The tube structure comprises tube sections 50, 52 which for purposes of illustration, are shorter in axial length than the sections shown in FIG. 1. The upper portion 54 of the tube structure includes the tube sections 50 of the same structure as the tube section illustrated in FIG. 3, however, the lower portion 56 includes the tube sections 52 having a structure of the cross-section as .shown in FIG. 8.

Each of the sections 52 is provided with two pairs of diametrically opposed apertures 58, 60 which are similar to apertures 24, 26, respectively, shown in FIG. 3. The tube sections 52 also include another pair of apertures 62 which are diametrically opposed with respect to each other but in close adjacency with the apertures 60. The sections 50, 52 also include the interlocking lugs which are provided on the tube sections 12 thus permitting easy assembly and opening up of the tube structure of FIG. 6.

A pair of tying cables 64- is threaded through the pairs of apertures 58, respectively, with one end of each of the cables secured to a terminal tube section of the upper portion 54 and the other ends swaged or otherwise secured to sleeves 66. coil springs 68 are held in compression between the sleeves 66 and the adjacent tube section 70 and serve the same purpose as does the spring 38 in the embodiment of FIG. 1. As in the previous embodiment, annular elements 72 in the form of spacer washers or sleeves are provided between some of the tube sections for both upper and lowe portions 54, 56, depending, as previously described, on the amount of flexing desired. In FIGS. 6 and 7, it will be noted that the lengths of the sleeves for the upper portion are greater than those of the lower section.

A pair of control cables 74 are threaded through the apertures 60, respectively, in the lower portion 56 and the ends of these cables are secured at 76 to the tube section 78 which is the terminal section for the portion 56. Another pair of control cables 80 are threaded through the apertures 62 and then extended through both portions 54, 56 of the tube structure. In FIG. 7, the terminal ends of the cables 80 are secured at 82 to the terminal section 84 of the portion 54.

The other ends of the cables 80 remote from its ter minal ends are joined together and looped around a pulley 86 which is suitably connected to a control knob 88 by a shaft 90. Similarly, the ends of the control cables 74 remote from its terminal ends are joined together and looped around a pulley 92. A suitable knob 94 is rigidly connected to the pulley 92 for imparting rotation thereto.

In operation, rotation of the knob 88 in either direction will correspondingly impart a pulling force to one of the cables 80 and release, correspondingly, tension in the other cable. Such a pulling force will flex the upper portion 54 while the lower portion 56 remains straight. it it is desired to extend the terminal end of the tube structure at different radii of curvature, the knob 94 may be rotated in the same direction as the rotation of the knob 88, as shown in FIG. 7. The apparatus may assume other shape or conditions of flexing depending upon the extent and manner desired. For example, from the condition shown in FIG. 7, the knob 88 may be rotated in order to straighten the upper portion 56 resulting in two straight sections separated by a flexed portion. The knob 88 may be rotated in the complete opposite extreme so that the upper portion is curved oppositely to that shown. In this case, the tube structure would assume an S-shape.

In the embodiment of FIGS. 9-13, the tube sections 100 are shown to be thin plate-like units as compared to the tube sections in the previous embodiments. It will be understood that this diflerence is merely for illustration purposes and that the tube sections for all of the embodiments may be of any desired length. Similarly, the tube sections 100 may be composed of two interlocking semi-circular ring elements, such as shown in FIG. 5. The advantage of the thin type of section is that in the use of a great number of the sections for a relatively short radius of curvature, the flexed tube structure will assume a more perfect smoothly curved structure rather than a many-sdided arc which results when the tube sections are long, such as shown in FIG. 1.

Each of the tube sections 100 is formed with a pair of opposed openings 102 in the form of round apertures and a pair of opposed openings 104 in the form of slots. The apertures 102 receive a pair of control cables 106, respectively, and these may be suitably anchored on the terminal tube section (not shown). The other ends of the cables 106 may be connected together and arranged around a pulley in much the same fashion as in the previous embodiment.

The present embodiment differs from the previously described embodiments in the use of flexure strips, preferably of spring material, instead of tying cables and coil springs 38, 68. A pair of resilient flexure strips 108 having spaced notches or cut-outs 110 and spacer portions 112 therebetween is adapated to be received in the openings 104, respectively. To provide the tube struc ture with flush external and interior surfaces, the width of the strips 108 is made equal to the width of the tube sections and the depth of the openings 104 made equal to the portion of the strips above the notches 110 which in turn will receive the portion of the tube sections below the openings 104. The entire tube structure shown in FIGS. 9l2 may be encased in a rubber or plastic jacket or sheathing 114 which serves to maintain the flexure strips 108 in proper relationship with respect to the tube sections. It will be appreciated that the present embodiment is rather easy to assemble or disassemble, requiring only the holding of the tube sections and the insertion or removal of the strips 103 from their respective positions. The unique advantage in using a spring flexure strip instead of cables is that twisting of the tube structure is minimized or eliminated in the event that a relatively heavy tool is associated therewith either internally or mounted at the end.

The amount of flexing of the tube structure shown in FIGS. 912, depends upon the length of the spacer portions 112 and/ or the length of the tube sections 100, such requirements being determinative for the variance of flexing in the embodiments of FIGS. 1 and 6. If longer tube sections are to be utilized, the notches would be correspondingly longer. In FIGS. 11 and 12 there is shown, in step sequence, the progress of flexing when a force is exerted upon one of the cables 106. This progress would hold true for all of the embodiments of the invention. The force would initially flex the flexure strip portions between the two end tube sections until one end of the terminal tube section abuts the first succeeding section whereupon the continuing force will flex the flexure strip portions between the first succeeding section and the next succeeding section, and so on, until the desired amount of curvature is attained.

By having the notches 110 interlockingly engaged with a corresponding slot, the tube sections are held from displacement along the axis of the tube structure. Consequently, this engagement erves to retain the tube sections to maintain the length of the tube structure along its axis substantially constant. If a permanent arrangement is desired, a notched flexure strip may be dispensed with and one having continuous edges could be threaded through the slots 104. A weld may then be applied to every juncture of the strip with a tube section.

In FIG. 13, there is shown an oval tube section having thickened portions on two sides thereof which may be substituted for the circular tube sections of the structure shown in FIG. 9. The advantage in the use of the oval tube section when the tying flexible element, whether it be a cable or flexible strip, is associated with the ends of the section having the greater diameter, is that there is less tendency for the tube structure to twist while being flexed, which may occur if the tying flexible elements are not sufficiently taut or the parts are loosely fitted. This has particular advantage for a device similar to the structure shown in FIG. 6 wherein there is a tendency for the structure to twist when a force is exerted on the cables 80. The twisting here would be occasioned because of the ofl center location of the openings 62 for the cables 80. Since one of the openings 62 is closer to one of the openings 58, a torque will be developed tending to twist the structure when the cable is pulled. In the use of an oval tube section, the tying flexible element has a greater moment arm, that is, the distance between the element and the axial center of the tube section, than the moment arm for the control cable. Therefore, the cable may be located off-center somewhat and its use thereof will not affect the alignment of the tube structure.

From the foregoing description, it will be appreciated that the present invention provides a flexible tube structure which may be flexed in a controlled manner, both as to extent and as to its radii of curvature. The flexible tube structure may be easily disassembled and reassembled, may be shortened or lengthened and may serve as a housing or a flexible support for various tools. While only specific assemblies are illustrated and described, it will be understood that this is for brevity only and that various other arrangements may be utilized. For example, the embodiment of FIG. 6 may be compounded into any number of individual flexing portions requiring only the addition of more openings and control cables for the additional portions. It will be understood that all of the tube sections in any of the embodiments may be oval in cross-section. While not illustrated, the tube sections for any of the embodiments may include many openings in order to accommodate control wires, or cables for tools, housed within the tube structure or at the end thereof. These openings as well as those for the various flexible elements described may be made in thickened protruding portions of the tube sections such as those shown in FIGS. 3 and 8 or in the walls of the tube sections such as shown in FIG. 13. These and many more modifications and arrangements of the present invention may be made or employed without departing from the spirit or scope of the appended claims.

I claim:

1. A flexible tubular structure comprising, a plurality of tubular sections arranged in end-to-end relationship, spacer means defining longitudinal openings positioned diametrically opposed to each other and pivotally positioning said tubular sections relative to each other, a plurality of openings in said tubular sections each of which is aligned with corresponding openings on the preceding tubular section to form at least two pairs of aligned openings extending longitudinally of the tubular structure, a first pair of cables extending through one of said pairs of openings, a second pair of cables extending longitudinally through the second pair of openings in said tubular sections and the longitudinal openings in said spacer means, means securing one of the ends of each of said first pair of cables to the tubular section adjacent to the ends or" said cables, means securing the other ends of each of said first pair of cables and one end of each of said second pair of cables tothe tubular section adjacent said other ends of said first pair of cables, whereby a pulling force exerted upon either cable of said second pair of cables will produce a flexing of the tubular structure.

2. A flexible tubular structure comprising, a plurality of tubular sections arranged in end-to-end relationship, spacer means positioned diametrically opposed relative to each other and pivotally positioning said tubular sections in spaced relation to each other, each of said tubular sections consisting of two semi-circular ring elements interlockingly connected at their respective ends, a plurality of openings formed in said tubular sections each of which is aligned with the corresponding openings of the preceding tubular section to form at least four series of aligned openings extending longitudinally of said tubular structure, two of said series of openings extending through connecting ends of said ring elements, said spacers positioned between adjacent ends of said tubular sections one at each of the connecting ends of the tubular sections in axial alignment with openings therethrough, a first pair of cable strung through the series of openings which extend through the interconnecting ends of the ring elements, and the spacers associated therewith, a second pair of cables strung through the second of said series of two aligned openings, means securing the first ends of each of said first pairs of cables to the tubular section adjacent said ends, means securing the second ends of each of said first pair of cables to the tubular section adjacent said other end of said first pair of cables, means securing the first ends of said second pair of cables to thereby permit flexing of the tubular structure upon exerting a pulling force upon one of said second pair of cables.

3. A flexible tubular structure comprising, a plurality of tubular sections arranged in end-to-end relationship, a plurality of spacer elements diametrically disposed to pivotally position said tubular sections in spaced relation, a plurality of openings in said tubular sections axially aligned with the corresponding openings of the preceding tubular section to form at least four series of aligned openings extending longitudinally of the tubular sections, a plurality of openings extending longitudinally through said spacer elements, said spacers positioned between the adjacent ends of said tubular sections in axial alignment with a pair of the openings therein, a first pair of cables strung through the series of openings which extend through said spacers associated therewith, a second pair of cables strung through the second two of said series of aligned openings, means securing the common ends of said cables to the section adjacent the ends of said cables, means tensioning the opposite ends of said cable extending through said spacers, thereby permitting a pulling force exterted upon either side of said second pair of cables to produce a flexing of the tubular structure.

4. A flexible tubular structure comprising, a plurality of tubular sections arranged in end-to-end relationship, a plurality of angularly spaced axial passages in said tubular sections each of said passages axially aligned with corresponding passages of adjacent tubular sections to form at least two pairs of aligned openings extending longitudinally of the tubular structure, two spacers positioned between adjacent ends of said tubular sections to pivotally position said tubular sections in spaced relation relative to each other, an arcuate surface on the engaging ends of said spacers to permit said tubular sections to roll on the arcuate surface of said spacers when said tubular sections are flexed relative to each other, a first pair of flexible elements extending through one of said pairs of openings and said spacers associated therewith for tensioning said tubular sections, a second pair of flexible elements extending through a second pair of openings in said tubular sections, means securing one of the ends of said second pair of flexible elements to the adjacent tubular section whereby a pulling force exerted on one of said second pair of flexible elements will produce a flexing of the tubular structure.

5. A flexible tubular structure comprising, a plurality of tubular sections arranged in end-to-end relationship, a plurality of openings extending longitudinally through each of said tubular sections each of which is aligned with the corresponding opening of the adjacent tubular section to form at least two pairs of aligned openings extending longitudinally of the tubular structure each of said pairs being diametrically opposed, a first pair of flexible elements extending through said firs-t pair of openings, a second pair of flexible elements extending through the second pair of axially aligned openings, spacer means positioned between adjacent ends of successive tubular sections and arranged in the plane defined by said first pair of flexible elements, said spacers pivotally positioning adjacent tubular sections relative to each other, means preventing movement of the portions of said flexible elements adjacent the end tubular section of the tubular structure, means preventing movement of the portions of said first pair of flexible elements adjacent to the end tubular section relative to said first end section whereby a pulling force exerted on either of said first pair of elements will produce a flexing of the tubular structure about the spacer elements.

References Cited in the file of this patent UNITED STATES PATENTS 731,496 Pairier et al. June 23, 1903 944,830 Sussman Dec. 28, 1908 1,044,044 Hardesty Nov. 12, 1912 1,482,576 Myers Feb. 5, 1924 2,241,576- Barton May 13, 1941 2,498,692 Mains Feb. 28, 1950 2,540,141 Shafer Feb. 6, 1951 2,799,274 Eisenhut July 16, 1957 2,975,785 Sheldon Mar. 21, 1961 FOREIGN PATENTS 179,905 Austria Oct. 25, 1954 339,757 France Apr. 26, 1904 UNITED STATES PATENT. OFFICE CERTIFICATE OF CORRECTION Patent No. 3,060,972 October 30, 1962 Gilbert J. Sheldon It is hereby certified that error appears in the above numbered patent requiring correction and that the said Letters Patent should read as corrected below.

Column 1, line 15, for "of", second occurrence, read in column 13,- line 13 for "suitable" read suitably line 49, for "plates" read plate line 52, after "form" insert of line 55, for "raddi" read radii column 5, line 48, for many--sdided" read many-sided line 64', for "adapated" read adapted column 7, line 53, for "cable" read cables Signed and sealed this 23rd day of April 1963.

(SEAL) Attest:

ERNEST w. SWIDER DAVID LADD. Attesting Officer Commissioner of Patents UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent Non 3,060,972 October 30, 1962 Gilbert J. Sheldon It is hereby certified that error appears in the above numbered patent requiring correction and that the said Letters Patent should read as corrected below.

Column 1, line 15, for "of",second occurrence, read in column 3, line 13 for "suitable read suitably line 49 for "plates" read plate line 52, after "form" insert of line 55, for "raddi" read radii column 5, line 48, for "many-sdided" read manysided line 64, for "adapated" read adapted column 7, line 53, for "cable" read cables Signed and sealed this 23rd day of April 1963.

(SEAL) littest:

ERNEST w. SWIDER DAVID LADD Attesting Officer Commissioner of Patents

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US731496 *13 Dec 190123 Jun 1903Paul PoirierGastroscope.
US944830 *2 Jun 190928 Dec 1909Martin SussmannGastroscope.
US1044044 *27 Sep 191112 Nov 1912Rudd HardestySectional culvert.
US1482576 *26 Dec 19225 Feb 1924Myers William CSectional grain spout
US2241576 *20 Mar 194013 May 1941Barton Charles LFigure toy
US2498692 *4 Jan 194928 Feb 1950Mains Marshall PaulGastrointestinal tube
US2540141 *6 Mar 19466 Feb 1951Armco Steel CorpLongitudinal seam for corrugated metal pipe for light duty tunnel liners
US2799274 *27 Sep 195516 Jul 1957Arnold EisenhutVeterinary evacuating probe for use on cattle
US2975785 *26 Sep 195721 Mar 1961Bausch & LombOptical viewing instrument
AT179905B * Title not available
FR339757A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3155091 *30 Apr 19633 Nov 1964Diagnosto Associates LtdDiagnostic device for the detection and location of the sites of internal anatomicalabnormalities
US3162214 *16 Jan 196322 Dec 1964American Optical CorpFlexible tubular structures
US3190286 *31 Oct 196122 Jun 1965Bausch & LombFlexible viewing probe for endoscopic use
US3266059 *19 Jun 196316 Aug 1966North American Aviation IncPrestressed flexible joint for mechanical arms and the like
US3302634 *13 Sep 19637 Feb 1967Mazellan Myron WInflatable string for marking internal bleeding
US3302635 *19 Sep 19637 Feb 1967Pittman Fred ESemi-rigid device for marking internal bleeding
US3430662 *21 Sep 19644 Mar 1969Guarnaschelli StephenFlexible segmented tube
US3592239 *20 Nov 196713 Jul 1971Offshore Sea Dev CorpHinged pipe structure
US3625200 *26 Aug 19697 Dec 1971Us Catheter & Instr CorpControlled curvable tip member
US3731671 *21 Oct 19718 May 1973Cordis CorpLow-friction catheter guide
US3802440 *19 Dec 19729 Apr 1974Resce T & AssIntubation guide
US3892228 *3 Oct 19731 Jul 1975Olympus Optical CoApparatus for adjusting the flexing of the bending section of an endoscope
US4068088 *24 Feb 197610 Jan 1978Coal Industry (Patents) LimitedUnderground mine equipment
US4108211 *21 Apr 197622 Aug 1978Fuji Photo Optical Co., Ltd.Articulated, four-way bendable tube structure
US4205105 *19 Dec 197727 May 1980P. H. Thermal Products LimitedPipe insulation
US4228825 *9 Jan 197921 Oct 1980Kabelschlepp Gesellschaft Mit Beschrankter HaftungTransmission line carrier
US4384594 *29 Apr 198124 May 1983Kabelschlepp Gesellschaft mit beschraankter HaftungEnergy conduit support
US4393728 *23 Feb 198219 Jul 1983Robotgruppen HbFlexible arm, particularly a robot arm
US4432349 *5 Oct 198121 Feb 1984Fuji Photo Optical Co., Ltd.Articulated tube structure for use in an endoscope
US4487218 *25 Jun 198211 Dec 1984Cascade CorporationLine take-up assembly for a lift truck
US4494417 *29 Sep 198222 Jan 1985Robotgruppen HbFor supporting and/or manipulating tools
US4529400 *23 Mar 198416 Jul 1985Scholten James RApparatus for naso and oroendotracheal intubation
US4700693 *9 Dec 198520 Oct 1987Welch Allyn, Inc.Endoscope steering section
US4726355 *17 Feb 198723 Feb 1988Olympus Optical Co., Ltd.Curvable part device for endoscope devices
US4762118 *28 Jul 19879 Aug 1988Welch Allyn, Inc.Self-adjusting steering mechanism for borescope, endoscope, or guide tube
US4762119 *28 Jul 19879 Aug 1988Welch Allyn, Inc.Self-adjusting steering mechanism for borescope or endoscope
US4765795 *10 Jun 198623 Aug 1988Lord CorporationPositioning an object
US4787369 *14 Aug 198729 Nov 1988Welch Allyn, Inc.Force relieving, force limiting self-adjusting steering for borescope or endoscope
US4791963 *1 Feb 198620 Dec 1988Witzenmann Gmbh Metallschlauch-Fabrik PforzheimFlexible tube with mutually parallel, ring-shaped flutes and axial support
US4807370 *6 Jul 198728 Feb 1989Anterior, Inc.Adjustable tube bending pattern device
US4886067 *3 Jan 198912 Dec 1989C. R. Bard, Inc.Steerable guidewire with soft adjustable tip
US4972048 *6 Jun 198920 Nov 1990W. L. Gore & Associates, Inc.Flexible housing for a transmission line in a hydrostatically pressurized environment
US5058577 *9 May 198922 Oct 1991Gary SixFlexible tip stylet for use with an endotracheal intubation device
US5098440 *14 Aug 199024 Mar 1992Cordis CorporationObject retrieval method and apparatus
US5134251 *31 May 199028 Jul 1992W. L. Gore & Associates, Inc.Flexible housing for transmission lines
US5143475 *14 Mar 19911 Sep 1992Kabushiki Kaisha Machida SeisakushoBending device
US5147379 *26 Nov 199015 Sep 1992Louisiana State University And Agricultural And Mechanical CollegeInsertion instrument for vena cava filter
US5170803 *28 Sep 199015 Dec 1992Brunswick Biomedical Technologies, Inc.Esophageal displacement electrode
US5174168 *9 Sep 198829 Dec 1992Kabushiki Kaisha Komatsu SeisakushoFlexible robot arm
US5176126 *9 Oct 19905 Jan 1993Kabushiki Kaisha Machida SeisakushoBending device
US5178129 *7 Dec 199012 Jan 1993Kabushiki Kaisha Machida SeisakushoMethod of producing bending device
US5203380 *9 Oct 199020 Apr 1993Kabushiki Kaisha Machida SeisakushoBending device
US5251611 *7 May 199112 Oct 1993Zehel Wendell EFlexible steerable device
US5254809 *25 Oct 199119 Oct 1993W. L. Gore & Associates, Inc.Segmented flexible housing
US5297443 *7 Jul 199229 Mar 1994Wentz John DFlexible positioning appendage
US5317952 *14 Dec 19927 Jun 1994Kinetic Sciences Inc.Tentacle-like manipulators with adjustable tension lines
US5383852 *4 Dec 199224 Jan 1995C. R. Bard, Inc.Catheter with independent proximal and distal control
US5390663 *23 Dec 199321 Feb 1995Schaefer; Nicholas E.Canal obstruction remover
US5520222 *3 Mar 199528 May 1996Kabushiki Kaisha Machida SeisakushoBending device
US5558665 *24 Jun 199424 Sep 1996Archimedes Surgical, Inc.Surgical instrument and method for intraluminal retraction of an anatomic structure
US5624381 *9 Aug 199429 Apr 1997Kieturakis; Maciej J.Surgical instrument and method for retraction of an anatomic structure defining an interior lumen
US5632432 *19 Dec 199427 May 1997Ethicon Endo-Surgery, Inc.For applying surgical fasteners to tissue
US5656011 *21 Apr 199512 Aug 1997Epflex Feinwerktechnik GmbhEndoscope tube system
US5669544 *2 Oct 199623 Sep 1997Ethicon Endo-Surgery, Inc.Surgical instrument
US5673840 *2 Oct 19967 Oct 1997Ethicon Endo-Surgery, Inc.Surgical instrument
US5673841 *3 Oct 19967 Oct 1997Ethicon Endo-Surgery, Inc.Locking mechanism
US5680982 *2 Oct 199628 Oct 1997Ethicon Endo-Surgery, Inc.Surgical instrument
US5692668 *2 Oct 19962 Dec 1997Ethicon Endo-Surgery, Inc.Surgical instrument
US5752644 *11 Jul 199519 May 1998United States Surgical CorporationDisposable loading unit for surgical stapler
US5787897 *28 Feb 19964 Aug 1998Archimedes Surgical, Inc.Surgical method for intraluminally plicating a fundus of a patient
US5791338 *17 Jan 199611 Aug 1998William T. MerchantEndotracheal intubation apparatus
US5826776 *2 Oct 199627 Oct 1998Ethicon Endo-Surgery, Inc.Surgical instrument
US5909007 *23 Jul 19971 Jun 1999AlcatelBending restrictor
US5911353 *18 Mar 199815 Jun 1999United States Surgical CorporationDisposable loading unit for surgical stapler
US6053166 *9 Feb 199825 Apr 2000Gomez; Richard J.Intubating assembly
US6067990 *29 May 199830 May 2000Surgical, Inc.Method for esophageal retraction
US6448498 *2 May 200010 Sep 2002Haworth, Inc.Flexible raceway arrangement for cabling
US64509482 Nov 199917 Sep 2002Vista Medical Technologies, Inc.Deflecting tip for surgical cannula
US6458010 *18 Feb 20001 Oct 2002Sony CorporationCurving mechanism and robot
US6561535 *21 Mar 200213 May 2003Case, LlcHose control for planter apparatus
US674323925 May 20001 Jun 2004St. Jude Medical, Inc.Devices with a bendable tip for medical procedures
US68378462 May 20024 Jan 2005Neo Guide Systems, Inc.Endoscope having a guide tube
US684836922 Nov 20001 Feb 2005Haworth, Inc.Workstation and power and telecommunication arrangement therefor
US685800527 Aug 200222 Feb 2005Neo Guide Systems, Inc.Tendon-driven endoscope and methods of insertion
US694261325 Oct 200213 Sep 2005Usgi Medical Inc.Shape lockable apparatus and method for advancing an instrument through unsupported anatomy
US696016225 Oct 20021 Nov 2005Usgi Medical Inc.Shape lockable apparatus and method for advancing an instrument through unsupported anatomy
US696016325 Oct 20021 Nov 2005Usgi Medical Inc.Shape lockable apparatus and method for advancing an instrument through unsupported anatomy
US697441127 Aug 200213 Dec 2005Neoguide Systems, Inc.Endoscope with single step guiding apparatus
US698420327 Nov 200210 Jan 2006Neoguide Systems, Inc.Endoscope with adjacently positioned guiding apparatus
US70410528 Jul 20049 May 2006Usgi Medical Inc.Shape lockable apparatus and method for advancing an instrument through unsupported anatomy
US7044245 *17 Jun 200316 May 2006Science Applications International CorporationToroidal propulsion and steering system
US712870813 Jun 200231 Oct 2006Usgi Medical Inc.Shape lockable apparatus and method for advancing an instrument through unsupported anatomy
US72350469 Jan 200626 Jun 2007Science Applications International CorporationToroidal propulsion and steering system
US73871799 Jan 200617 Jun 2008Science Applications International CorporationToroidal propulsion and steering system
US741048324 Nov 200412 Aug 2008Novare Surgical Systems, Inc.Hand-actuated device for remote manipulation of a grasping tool
US757172928 Feb 200511 Aug 2009Usgi Medical, Inc.Apparatus and methods for performing mucosectomy
US761506613 Jul 200510 Nov 2009Novare Surgical Systems, Inc.Articulating mechanism for remote manipulation of a surgical or diagnostic tool
US763790515 Jan 200329 Dec 2009Usgi Medical, Inc.Endoluminal tool deployment system
US767811724 Sep 200416 Mar 2010Novare Surgical Systems, Inc.Articulating mechanism with flex-hinged links
US76823079 Nov 200523 Mar 2010Novare Surgical Systems, Inc.Articulating mechanism for remote manipulation of a surgical or diagnostic tool
US770345929 Sep 200427 Apr 2010Usgi Medical, Inc.Apparatus and methods for mapping out endoluminal gastrointestinal surgery
US770426417 Nov 200427 Apr 2010Usgi Medical, Inc.Apparatus and methods for forming and securing gastrointestinal tissue folds
US774461312 Dec 200329 Jun 2010Usgi Medical, Inc.Apparatus and methods for forming and securing gastrointestinal tissue folds
US778525223 Nov 200431 Aug 2010Novare Surgical Systems, Inc.Articulating sheath for flexible instruments
US782880826 Aug 20049 Nov 2010Novare Surgical Systems, Inc.Link systems and articulation mechanisms for remote manipulation of surgical or diagnostic tools
US784544013 Nov 20077 Dec 2010Raytheon Sarcos, LlcSerpentine robotic crawler
US785410924 Oct 200721 Dec 2010Carnegie Mellon UniversitySteerable multi-linked device having a modular link assembly
US786255416 Apr 20074 Jan 2011Intuitive Surgical Operations, Inc.Articulating tool with improved tension member system
US787498022 Sep 200525 Jan 2011Medigus Ltd.Articulation section
US79180805 Aug 20105 Apr 2011Carnegie Mellon UniversitySteerable multi-linked device having a modular link assembly
US791884516 Nov 20045 Apr 2011Usgi Medical, Inc.Endoluminal tool deployment system
US79188697 May 20045 Apr 2011Usgi Medical, Inc.Methods and apparatus for performing endoluminal gastroplasty
US79428841 Jul 200317 May 2011Usgi Medical, Inc.Methods for reduction of a gastric lumen
US79428981 Jul 200317 May 2011Usgi Medical, Inc.Delivery systems and methods for gastric reduction
US7955340 *12 Dec 20037 Jun 2011Usgi Medical, Inc.Apparatus and methods for forming and securing gastrointestinal tissue folds
US800236513 Nov 200723 Aug 2011Raytheon CompanyConformable track assembly for a robotic crawler
US80027167 May 200823 Aug 2011Raytheon CompanyMethod for manufacturing a complex structure
US804263022 Jun 201025 Oct 2011Raytheon CompanySerpentine robotic crawler
US806221213 May 200522 Nov 2011Intuitive Surgical Operations, Inc.Steerable endoscope and improved method of insertion
US808387922 Nov 200627 Dec 2011Intuitive Surgical Operations, Inc.Non-metallic, multi-strand control cable for steerable instruments
US809993910 Nov 201024 Jan 2012Carnegie Mellon UniversitySteerable multi-linked device having a modular link assembly
US810003127 Feb 200824 Jan 2012Carnegie Mellon UniversityMulti-linked device having a reinforcing member
US810082416 Apr 200724 Jan 2012Intuitive Surgical Operations, Inc.Tool with articulation lock
US81824173 May 200522 May 2012Intuitive Surgical Operations, Inc.Articulating mechanism components and system for easy assembly and disassembly
US818241825 Feb 200822 May 2012Intuitive Surgical Operations, Inc.Systems and methods for articulating an elongate body
US818524113 Nov 200722 May 2012Raytheon CompanyTracked robotic crawler having a moveable arm
US819242214 Aug 20075 Jun 2012Medrobotics CorporationSteerable multi linked device having multiple working ports
US821626025 Aug 200810 Jul 2012Usgi Medical, Inc.Apparatus and methods for forming and securing gastrointestinal tissue folds
US822654613 May 200524 Jul 2012Intuitive Surgical Operations, Inc.Steerable endoscope and improved method of insertion
US824657517 Feb 200921 Aug 2012Tyco Healthcare Group LpFlexible hollow spine with locking feature and manipulation structure
US827737510 Aug 20102 Oct 2012Intuitive Surgical Operations, Inc.Flexible segment system
US831777711 May 201227 Nov 2012Medrobotics CorporationSteerable multi-linked device having multiple working ports
US832329716 Mar 20104 Dec 2012Intuitive Surgical Operations, Inc.Articulating mechanism with flex-hinged links
US834317526 Apr 20101 Jan 2013Usgi Medical, Inc.Apparatus and methods for forming and securing gastrointestinal tissue folds
US8348834 *18 Dec 20088 Jan 2013Ethicon Endo-Surgery, Inc.Steerable surgical access devices and methods
US83610907 Feb 200829 Jan 2013Intuitive Surgical Operations, Inc.Apparatus and method for endoscopic colectomy
US8374722 *21 Jun 201012 Feb 2013Oliver Crispin Robotics LimitedRobotic arm
US83920368 Jan 20095 Mar 2013Raytheon CompanyPoint and go navigation system and method
US839342225 May 201212 Mar 2013Raytheon CompanySerpentine robotic crawler
US839748119 Jan 201219 Mar 2013Carnegie Mellon UniversitySteerable multi-linked device having a modular link assembly
US840924416 Apr 20072 Apr 2013Intuitive Surgical Operations, Inc.Tool with end effector force limiter
US84142466 Jun 20089 Apr 2013Cycogs, LlcModular hybrid snake arm
US84197207 Feb 201216 Apr 2013National Advanced Endoscopy Devices, IncorporatedFlexible laparoscopic device
US841974715 Jun 201016 Apr 2013Intuitive Surgical Operations, Inc.Link systems and articulation mechanisms for remote manipulation of surgical or diagnostic tools
US843420812 Jul 20117 May 2013Raytheon CompanyTwo-dimensional layout for use in a complex structure
US844369219 Jan 201221 May 2013Carnegie Mellon UniversityMulti-linked device having a reinforcing member
US845913827 Feb 200811 Jun 2013Carnegie Mellon UniversitySystem for releasably attaching a disposable device to a durable device
US846547517 Aug 200918 Jun 2013Intuitive Surgical Operations, Inc.Instrument with multiple articulation locks
US851792319 May 200427 Aug 2013Intuitive Surgical Operations, Inc.Apparatus and methods for facilitating treatment of tissue via improved delivery of energy based and non-energy based modalities
US853534723 Apr 201017 Sep 2013Intuitive Surgical Operations, Inc.Articulating mechanisms with bifurcating control
US856264016 Apr 200722 Oct 2013Intuitive Surgical Operations, Inc.Tool with multi-state ratcheted end effector
US856829918 May 200729 Oct 2013Intuitive Surgical Operations, Inc.Methods and apparatus for displaying three-dimensional orientation of a steerable distal tip of an endoscope
US857171110 Jul 200829 Oct 2013Raytheon CompanyModular robotic crawler
US857424312 Dec 20035 Nov 2013Usgi Medical, Inc.Apparatus and methods for forming and securing gastrointestinal tissue folds
US860864724 Apr 201217 Dec 2013Intuitive Surgical Operations, Inc.Systems and methods for articulating an elongate body
US864160228 Jun 20124 Feb 2014Intuitive Surgical Operations, Inc.Steerable endoscope and improved method of insertion
US86566976 Mar 201325 Feb 2014Carnegie Mellon UniversitySteerable multi-linked device having a modular link assembly
US869669428 Dec 201215 Apr 2014Intuitive Surgical Operations, Inc.Apparatus and method for endoscopic colectomy
US872153011 Jul 201113 May 2014Intuitive Surgical Operations, Inc.Tendon-driven endoscope and methods of use
US872690927 Jan 200620 May 2014Usgi Medical, Inc.Methods and apparatus for revision of obesity procedures
US87533608 Nov 201017 Jun 2014Covidien LpExpandable mesh system and method of use therefor
US882789427 Oct 20119 Sep 2014Intuitive Surgical Operations, Inc.Steerable endoscope and improved method of insertion
US88331973 May 201316 Sep 2014Carnegie Mellon UniversityMulti-linked device having a reinforcing member
US883435413 May 200516 Sep 2014Intuitive Surgical Operations, Inc.Steerable endoscope and improved method of insertion
US20100160735 *18 Dec 200824 Jun 2010Ethicon Endo-Surgery, Inc.Steerable surgical access devices and methods
US20100185052 *19 Jan 201022 Jul 2010Hui-Yu ChangEndoscopic device
US20110054687 *21 Jun 20103 Mar 2011Robert Oliver BuckinghamRobotic Arm
US20110257478 *20 Apr 201120 Oct 2011Spinewindow LlcMethod and apparatus for performing retro peritoneal dissection
US20120029285 *7 Dec 20102 Feb 2012David MainInstruments
US20120279323 *9 Nov 20108 Nov 2012Karsten BrodaInspection device and method for positioning an inspection device
US20120296167 *17 May 201222 Nov 2012Three-In-One Enterprises Co., Ltd.Flexible-Tubed Structure of Endoscope
US20120312103 *9 Nov 201013 Dec 2012Kerstin HannottInspection device and method for positioning an inspection device
US20130158355 *16 Dec 201120 Jun 2013Pioneer Medical Instrument Co., Ltd.Two-way endoscope steering mechanism and four-way endoscope steering mechanism
US20140018776 *26 Jul 201316 Jan 2014Olympus Medical Systems Corp.Joint ring, bending tube of endoscope, endoscope, and manufacturing method for joint ring for endoscope bending tube
USRE35595 *21 Oct 199326 Aug 1997Six; GaryFlexible tip stylet for use with an endotracheal intubation device
USRE3870815 Jun 20011 Mar 2005United States Surgical CorporationDisposable loading unit for surgical stapler
DE1541153B1 *27 May 19669 Jun 1971Olympus Optical CoSchlauchanordnung zur Untersuchung der Innenwaende gekruemmter Organe
DE2163653A1 *21 Dec 197129 Jun 1972Olympus Optical CoTitle not available
DE4432677B4 *14 Sep 19942 Dec 2004Ep Flex Feinwerktechnik GmbhEndoskoprohrsystem
DE4445459B4 *20 Dec 199427 Jan 2005Ep Flex Feinwerktechnik GmbhEndoscope tube connection system - has connection between flexible section of endoscope and control section enclosed by sliding outer stiffening tube
EP0341953A1 *8 May 198915 Nov 1989THE BABCOCK & WILCOX COMPANYSearch and retrieval device
EP0377742A1 *9 Sep 198818 Jul 1990Kabushiki Kaisha Komatsu SeisakushoFlexible arm robot
EP0422887A2 *9 Oct 199017 Apr 1991Kabushiki Kaisha Machida SeisakushoBending device
EP0439931A1 *10 Dec 19907 Aug 1991Kabushiki Kaisha Machida SeisakushoMethod of producing a bending device, in particular for an endoscope or surgical catheter
EP0448284A2 *13 Mar 199125 Sep 1991Kabushiki Kaisha Machida SeisakushoBending device
EP1849396A1 *10 Feb 200631 Oct 2007Olympus CorporationFlexible tube for endoscope, and endoscope device
EP2123231A1 *19 May 200925 Nov 2009Olympus Medical Systems CorporationBending tube and medical apparatus
EP2164295A1 *16 Sep 200817 Mar 2010Deleage SAElectric heat cable device
EP2524645A1 *18 May 201221 Nov 2012Three-In-One Enterprises Co., Ltd.Flexible-tubed structure of endoscope
EP2633961A1 *14 Aug 20074 Sep 2013Medrobotics CorporationSteerable multi-linked device having multiple working ports
WO1992019147A1 *7 May 199212 Nov 1992Dwight M BaumannMethod and apparatus for conducting exploratory procedures
WO1999039762A1 *9 Feb 199912 Aug 1999Gomez Richard JAn intubating assembly
WO2005120326A2 *23 May 200522 Dec 2005Novare Surgical Systems IncArticulating mechanism with flex-hinged links
WO2006033109A2 *22 Sep 200514 Dec 2006Medigus LtdAn improved articulation section
WO2006085620A110 Feb 200617 Aug 2006Olympus CorpFlexible tube for endoscope, and endoscope device
WO2008022114A2 *14 Aug 200721 Feb 2008Innovention Technologies LlcSteerable multi-linked device having multiple working ports
Classifications
U.S. Classification138/120, 74/502.5, 600/142, 600/585, 174/111, 219/550
International ClassificationB25J18/00, A61B1/005, B25J18/06
Cooperative ClassificationB25J18/06, A61B1/0055
European ClassificationA61B1/005B6, B25J18/06