WO1995003000A1 - Surgical instrument capable of disassembly - Google Patents

Surgical instrument capable of disassembly Download PDF

Info

Publication number
WO1995003000A1
WO1995003000A1 PCT/US1994/007992 US9407992W WO9503000A1 WO 1995003000 A1 WO1995003000 A1 WO 1995003000A1 US 9407992 W US9407992 W US 9407992W WO 9503000 A1 WO9503000 A1 WO 9503000A1
Authority
WO
WIPO (PCT)
Prior art keywords
hollow tube
locking
surgical instrument
inner rod
instrument according
Prior art date
Application number
PCT/US1994/007992
Other languages
French (fr)
Inventor
J. Stephen Holmes
Timothy Lamartina
Charles E. Beauchat
Original Assignee
Wright Medical Technology, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US08/093,477 external-priority patent/US5336238A/en
Application filed by Wright Medical Technology, Inc. filed Critical Wright Medical Technology, Inc.
Priority to EP94922577A priority Critical patent/EP0710088A4/en
Priority to AU73637/94A priority patent/AU7363794A/en
Priority to JP7505219A priority patent/JPH09501578A/en
Publication of WO1995003000A1 publication Critical patent/WO1995003000A1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/28—Surgical forceps
    • A61B17/29—Forceps for use in minimally invasive surgery
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/28—Surgical forceps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B18/1442—Probes having pivoting end effectors, e.g. forceps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/0046—Surgical instruments, devices or methods, e.g. tourniquets with a releasable handle; with handle and operating part separable
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/28—Surgical forceps
    • A61B17/29—Forceps for use in minimally invasive surgery
    • A61B17/2909—Handles
    • A61B2017/2912—Handles transmission of forces to actuating rod or piston
    • A61B2017/2919—Handles transmission of forces to actuating rod or piston details of linkages or pivot points
    • A61B2017/292—Handles transmission of forces to actuating rod or piston details of linkages or pivot points connection of actuating rod to handle, e.g. ball end in recess
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/28—Surgical forceps
    • A61B17/29—Forceps for use in minimally invasive surgery
    • A61B2017/2926—Details of heads or jaws
    • A61B2017/2927—Details of heads or jaws the angular position of the head being adjustable with respect to the shaft
    • A61B2017/2929—Details of heads or jaws the angular position of the head being adjustable with respect to the shaft with a head rotatable about the longitudinal axis of the shaft
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/08—Accessories or related features not otherwise provided for
    • A61B2090/0813—Accessories designed for easy sterilising, i.e. re-usable

Definitions

  • This invention relates generally to surgical instruments for use in minimally invasive surgical procedures.
  • instruments used in these procedures are of the closed shaft variety. Since these instruments usually cannot be disassembled, complete sterilization is not possible because microscopic pockets of tissue and blood are often left on the instrument even after completion of accepted sterilization procedures.
  • the instrument In order to insure complete sterilization of a closed shaft surgical instrument, the instrument must essentially be capable of disassembly into its major components so that the resulting openings are of sufficient magnitude to accept cleaning brushes. This insures that all surfaces of the instrument are exposed to the particular sterilization medium and any concern that the instrument is not thoroughly sterilized is thereby eliminated.
  • a surgical instrument comprises an inner rod coaxially disposed within a hollow tube and which has a working tip at the distal end and a handle at the proximal end and wherein the handle is detachably interconnected to the inner rod. Also, at least one locking pin is secured to the distal end of the inner rod and is capable of being interlocked with a locking tab formed on the inner surface of the hollow tube.
  • FIG. 1 is a perspective view of a surgical instrument capable of disassembly according to this invention
  • FIG. 2 is a perspective view of the instrument handle
  • FIG. 3 is a perspective view of the handle in disassembled condition
  • FIG. 4 is a perspective view of the handle release means
  • FIG. 5 is a perspective view of the means for interconnecting the handle and the inner rod
  • FIG. 6 is a cross-sectional view taken along the line 6-6 in FIG. 4;
  • FIGS. 7 and 8 are perspective views of the distal end of the instrument;
  • FIG. 9 is a cross-sectional view taken along the line 9-9 in FIG. 7;
  • FIG. 10 is a perspective view of the instrument in disassembled condition
  • FIG. 11 is a perspective view of an alternative embodiment of the instrument.
  • FIG. 12 is a perspective view of the alternative handle release means
  • FIG. 13 is a perspective view of the alternative means for interconnecting the handle and the inner rod
  • FIG. 14 is a cross-sectional view of the alternative handle release means
  • FIG. 15 is an enlarged cross-sectional view of a portion of the alternative means for interconnecting the handle and the inner rod;
  • FIG. 16 is a cross-sectional view of the alternative means for interconnecting the outer hollow tube and the inner rod;
  • FIG. 17 is a view taken along the line 17-17 in FIG. 16;
  • FIG. 18 is an enlarged cross-sectional view of the alternative locking pin and locking tab.
  • suBsruirr ⁇ s-E ⁇ r (HULE 26) BEST MODES FOR CARRYING OUT THE INVENTION
  • the numeral 1 designates the outer hollow tub of the surgical instrument and the numeral 2 identifies the inner rod which has locking element 3 disposed at one end thereof.
  • the working tip of the instrument is disposed at the distal end thereof and comprises jaws 4 and 5 which are opened and closed by means of linkage mechanism 6, as is well known.
  • rotation knob 7 Disposed at the proximal end of the instrument and secured to hollow tube 1 is rotation knob 7. In order to facilitate a 360 degree rotation of jaws 4 and 5, rotation knob 7 is pivotally mounted on handle element 8.
  • Handle element 9 is detachably connected to handle element 8 by locking means best shown in FIG. 6. More specifically, the locking means comprises closed rings 10 and 11 integrally formed on handle element 8 and partially closed ring 12 integrally formed on handle element 9. Knob 13 is biased outwardly of the handle means or to the right, as viewed in FIG. 6, by means of compression spring 14. Of course, knob 13 would also be operable if disposed on the opposite side of the handle means. Attached to knob 13 is a locking rod which comprises an inner portion 15 which is of smaller diameter than associated outer portion 16. Retaining pin
  • inner rod 2 extends through aperture 18 of handle element 8 and forms an operably interconnected relationship with respect to handle element 9 by the interlocked disposition of locking element 3 being disposed in slot 19.
  • operation of handles 8 and 9, in known manner, results in the activation of linkage mechanism 6 thereby causing jaws 4 and 5 to open and close as desired.
  • monopolar post 20 is formed on the upper surface of handle element 8 at the proximal end of the instrument. Also, in order to improve the comfort and operability of the instrument, the handle itself is made of an ergonomic configuration.
  • inner rod 2 and the associated working tip of the instrument are disjointably connected to hollow tube 1 by means of a collet mechanism.
  • collet 21 is rotatable about inner rod 2 independently of hollow tube 1 and comprises bevelled surface 22 at one end thereof.
  • Externally threaded end 23 of attachment housing 24 is
  • SUS ⁇ TIJ ⁇ E SHEET (HI 26) engageable with internal threads formed on the distal end of hollow tube 1.
  • locking pins 25 and 26 are attached to the housing for linking mechanism 6 in a spring-like fashion and are provided, respectively, with notches 27 and 28.
  • locking pins 25 and 26 are disposed in slotted openings formed in attachment housing 24 such that notches 27 and 28 engage attachment housing 24.
  • knob 13 is pushed inwardly of the handle as indicated by arrow 29 in FIG. 2. This causes the smaller diameter portion 15 of the locking rod to move to the left, as viewed in FIG. 6, thus allowing the open segment of ring 12 to slip past portion 15 which results in the separation of handle elements 8 and 9. Simultaneously with the separation of handle elements 8 and 9, locking element 3 is maneuvered out of slot 19, as best viewed in FIG. 5.
  • collet 21 is manually pushed toward the distal end of the instrument, as indicated by arrow 30 in FIG. 9, so as to cause the ends of locking pins 25 and 26 to slide along bevelled surface 22 of collet 21 thereby compressing locking pins 25 and
  • ⁇ IE SHEET (RULE 26) 26 inwardly with respect to inner rod 2 a sufficient distance to allow notches 27 and 28 to disengage attachment housing 24.
  • Inner rod 2 and the associated working tip of the instrument can then be easily disassembled whereby locking element 3 is withdrawn initially through aperture 18 and then inner rod 2 is pulled all the way through hollow tube 1. The instrument is then disposed in a disassembled condition as shown in FIG. 10.
  • the individual elements of the instrument are conveniently and thoroughly sterilized by means of accepted sterilization procedures.
  • the instrument is then reassembled by inserting inner rod 2 through hollow tube 1 and aperture 18 wherein locking element 3 is simply inserted into slot 19.
  • Knob 13 is then depressed thereby allowing ring 12 to be positioned around portion 15 of the locking rod.
  • locking pins 25 and 26 are interlocked with attachment housing 24 respectively by means of notches 27 and 28.
  • knob 13 is released, outer portion 16 enters ring 12 and is of sufficiently large diameter to prevent disengagement from the open segment of ring 12 so as to secure the handle in a completely assembled condition whereby the instrument is ready for reuse in an appropriate surgical procedure.
  • FIGS. 11-18 depict an alternative embodiment of the surgical instrument shown in FIGS. 1-10.
  • the numeral 101 designates the outer hollow tube of the surgical instrument and the numeral 102 identifies the inner rod which has locking element 103 disposed at one end thereof.
  • the working tip of the instrument is disposed at the distal end thereof and comprises jaws 104 and 105 which are opened and closed by means of linkage mechanism 106.
  • Disposed at the proximal end of the instrument and secured to hollow tube 101 is rotation knob 107.
  • Handle elements 108 and 109 are provided and are interconnected by locking means best shown in FIGS. 13-15. Also, handle element 109 is offset approximately 30 degrees in order to improve the comfort and operability of the instrument.
  • Handle locking means for the alternative embodiment of the instrument comprises closed rings 110 and 111 which are integrally formed on handle element 108 together with partially closed ring 112 integrally formed on handle element 109.
  • Knob 113 is biased outwardly of the handle means or to the left, as viewed in FIG. 14, by means of compression spring 114. As discussed in connection with knob 13, knob 113 would also be operable if disposed on the opposite side of the handle means. Attached to knob 113 is a locking rod which comprises an
  • SUBSTITUTE SHEET (EULE 26) inner portion 115 which is of smaller diameter than associated outer portion 116.
  • Retaining pin 117 is secure on the end of the locking rod remote from knob 113 and acts to prevent disengagement of the locking rod from the instrument handle means.
  • ring 112 is provided with bevelled surface 112a as best viewed in FIG. 15.
  • inner rod 102 and the associated working tip of the instrument are disjointably connected to hollow tube 101 by means similar to that shown and described in connection with FIGS.7-9. More specifically and as best shown in FIGS. 16-18, locking pins 125 and 126 are attached to the housing for linkage mechanism 106 in a spring-like fashion and are provided, respectively, with notches 127 and 128. It has been found that the optimum metallurgical compound for locking pins 125 and 126 is steel 420 heat treated. Notches 127 and 128 are shaped in a rounded configuration, as best shown in FIG. 18, in order to facilitate separation of hollow tube 101 and inner rod 102. Finally, locking tabs 129 and 130 are integrally formed on the inner surface of outer hollow tube 101.
  • FIGS. 11 - 18 inner rod 102 is slipped into hollow tube 101 and locking element 103 is inserted into slot 119. Then with handle element 108 and associated locking means disposed as shown in FIG. 14 and with inner surface 116a of enlarged portion 116 spaced from the adjacent surface 110a of closed ring 110, ring 112 is simply inserted into the gap between surfaces 110a and 116a. As ring 112 moves into position around smaller diameter portion 115 by means of its open segment, the locking rod is progressively forced to the right to an increasing degree by means of bevelled edge 112a.
  • inner rod 102 is maneuvered into an interlocked relation with outer hollow tube 101 by means of notches 127 and 128 of locking pins 125 and 126 which form an interlocked relationship, respectively, with locking tabs 129 and 130 integrally formed on the inner surface of outer hollow tube 101.
  • the instrument is then disposed in a fully assembled operational condition as shown in FIG. 11.
  • it is simply necessary to manually press knob 113 inwardly so as to allow ring 112 to disengage smaller diameter portion 115 of the locking rod through the open segment of ring 112 and simultaneously locking element 103 is removed from slot 119.

Abstract

A surgical instrument which easily disassembles for sterilization comprises an inner rod (2, 102) coaxially disposed in a hollow tube (1, 101) with a handle at one end of the rod and a working tip (45, 104, 105) at the other end. The handle is detachably interconnected to the inner rod and the inner rod is detachably interconnected to the hollow tube by means of at least one locking pin (25, 26, 125, 126).

Description

SURGICAL INSTRUMENT CAPABLE OF DISASSEMBLY BACKGROUND ART Up until recently, most abdominal and thoracic procedures required major incisions in order to provide an ability to observe the body cavity and perform any necessary diagnosis and treatment. This invention relates generally to surgical instruments for use in minimally invasive surgical procedures. In general, instruments used in these procedures are of the closed shaft variety. Since these instruments usually cannot be disassembled, complete sterilization is not possible because microscopic pockets of tissue and blood are often left on the instrument even after completion of accepted sterilization procedures.
In order to insure complete sterilization of a closed shaft surgical instrument, the instrument must essentially be capable of disassembly into its major components so that the resulting openings are of sufficient magnitude to accept cleaning brushes. This insures that all surfaces of the instrument are exposed to the particular sterilization medium and any concern that the instrument is not thoroughly sterilized is thereby eliminated.
SUBSUME SHEH (HOLE 26) DISCLOSURE OF INVENTION
By this invention, a surgical instrument is provided and comprises an inner rod coaxially disposed within a hollow tube and which has a working tip at the distal end and a handle at the proximal end and wherein the handle is detachably interconnected to the inner rod. Also, at least one locking pin is secured to the distal end of the inner rod and is capable of being interlocked with a locking tab formed on the inner surface of the hollow tube.
BRIEF DESCRIPTION OF DRAWINGS
In the drawings,
FIG. 1 is a perspective view of a surgical instrument capable of disassembly according to this invention;
FIG. 2 is a perspective view of the instrument handle;
FIG. 3 is a perspective view of the handle in disassembled condition;
FIG. 4 is a perspective view of the handle release means;
FIG. 5 is a perspective view of the means for interconnecting the handle and the inner rod;
FIG. 6 is a cross-sectional view taken along the line 6-6 in FIG. 4; FIGS. 7 and 8 are perspective views of the distal end of the instrument;
FIG. 9 is a cross-sectional view taken along the line 9-9 in FIG. 7;
FIG. 10 is a perspective view of the instrument in disassembled condition;
FIG. 11 is a perspective view of an alternative embodiment of the instrument;
FIG. 12 is a perspective view of the alternative handle release means;
FIG. 13 is a perspective view of the alternative means for interconnecting the handle and the inner rod;
FIG. 14 is a cross-sectional view of the alternative handle release means;
FIG. 15 is an enlarged cross-sectional view of a portion of the alternative means for interconnecting the handle and the inner rod;
FIG. 16 is a cross-sectional view of the alternative means for interconnecting the outer hollow tube and the inner rod;
FIG. 17 is a view taken along the line 17-17 in FIG. 16; and
FIG. 18 is an enlarged cross-sectional view of the alternative locking pin and locking tab.
3
suBsruirrε s-Eεr (HULE 26) BEST MODES FOR CARRYING OUT THE INVENTION
In the drawings, the numeral 1 designates the outer hollow tub of the surgical instrument and the numeral 2 identifies the inner rod which has locking element 3 disposed at one end thereof. The working tip of the instrument is disposed at the distal end thereof and comprises jaws 4 and 5 which are opened and closed by means of linkage mechanism 6, as is well known.
Disposed at the proximal end of the instrument and secured to hollow tube 1 is rotation knob 7. In order to facilitate a 360 degree rotation of jaws 4 and 5, rotation knob 7 is pivotally mounted on handle element 8.
Handle element 9 is detachably connected to handle element 8 by locking means best shown in FIG. 6. More specifically, the locking means comprises closed rings 10 and 11 integrally formed on handle element 8 and partially closed ring 12 integrally formed on handle element 9. Knob 13 is biased outwardly of the handle means or to the right, as viewed in FIG. 6, by means of compression spring 14. Of course, knob 13 would also be operable if disposed on the opposite side of the handle means. Attached to knob 13 is a locking rod which comprises an inner portion 15 which is of smaller diameter than associated outer portion 16. Retaining pin
4
S«βSmWfSH££rΛE26 17 is secured on the end of the locking rod remote from knob 13 and acts to prevent the locking rod from disengagement from the instrument handle means.
As best shown in FIG. 5, means is provided to interconnect inner rod 2 and handle element 9. Specifically, inner rod 2 extends through aperture 18 of handle element 8 and forms an operably interconnected relationship with respect to handle element 9 by the interlocked disposition of locking element 3 being disposed in slot 19. Of course, operation of handles 8 and 9, in known manner, results in the activation of linkage mechanism 6 thereby causing jaws 4 and 5 to open and close as desired.
As is well known, monopolar post 20 is formed on the upper surface of handle element 8 at the proximal end of the instrument. Also, in order to improve the comfort and operability of the instrument, the handle itself is made of an ergonomic configuration.
According to this invention, inner rod 2 and the associated working tip of the instrument are disjointably connected to hollow tube 1 by means of a collet mechanism. Specifically, collet 21 is rotatable about inner rod 2 independently of hollow tube 1 and comprises bevelled surface 22 at one end thereof. Externally threaded end 23 of attachment housing 24 is
5
SUSΪΪTIJΪE SHEET (HI 26) engageable with internal threads formed on the distal end of hollow tube 1. As best shown in FIG. 9, locking pins 25 and 26 are attached to the housing for linking mechanism 6 in a spring-like fashion and are provided, respectively, with notches 27 and 28. In the assembled instrument, locking pins 25 and 26 are disposed in slotted openings formed in attachment housing 24 such that notches 27 and 28 engage attachment housing 24.
In order to disassemble the fully assembled instrument, as shown in FIG. 1, into the fully disassembled instrument, as shown in FIG. 10, initially knob 13 is pushed inwardly of the handle as indicated by arrow 29 in FIG. 2. This causes the smaller diameter portion 15 of the locking rod to move to the left, as viewed in FIG. 6, thus allowing the open segment of ring 12 to slip past portion 15 which results in the separation of handle elements 8 and 9. Simultaneously with the separation of handle elements 8 and 9, locking element 3 is maneuvered out of slot 19, as best viewed in FIG. 5.
Following this operation, collet 21 is manually pushed toward the distal end of the instrument, as indicated by arrow 30 in FIG. 9, so as to cause the ends of locking pins 25 and 26 to slide along bevelled surface 22 of collet 21 thereby compressing locking pins 25 and
6
ΠΠΪIE SHEET (RULE 26) 26 inwardly with respect to inner rod 2 a sufficient distance to allow notches 27 and 28 to disengage attachment housing 24. Inner rod 2 and the associated working tip of the instrument can then be easily disassembled whereby locking element 3 is withdrawn initially through aperture 18 and then inner rod 2 is pulled all the way through hollow tube 1. The instrument is then disposed in a disassembled condition as shown in FIG. 10.
Following disassembly, the individual elements of the instrument are conveniently and thoroughly sterilized by means of accepted sterilization procedures. The instrument is then reassembled by inserting inner rod 2 through hollow tube 1 and aperture 18 wherein locking element 3 is simply inserted into slot 19. Knob 13 is then depressed thereby allowing ring 12 to be positioned around portion 15 of the locking rod. Simultaneously with this operation, locking pins 25 and 26 are interlocked with attachment housing 24 respectively by means of notches 27 and 28. When knob 13 is released, outer portion 16 enters ring 12 and is of sufficiently large diameter to prevent disengagement from the open segment of ring 12 so as to secure the handle in a completely assembled condition whereby the instrument is ready for reuse in an appropriate surgical procedure.
7
ITUTE SHEET MI 2 FIGS. 11-18 depict an alternative embodiment of the surgical instrument shown in FIGS. 1-10. With particular reference to FIGS. 11 and 12, the numeral 101 designates the outer hollow tube of the surgical instrument and the numeral 102 identifies the inner rod which has locking element 103 disposed at one end thereof. The working tip of the instrument is disposed at the distal end thereof and comprises jaws 104 and 105 which are opened and closed by means of linkage mechanism 106. Disposed at the proximal end of the instrument and secured to hollow tube 101 is rotation knob 107. Handle elements 108 and 109 are provided and are interconnected by locking means best shown in FIGS. 13-15. Also, handle element 109 is offset approximately 30 degrees in order to improve the comfort and operability of the instrument.
Handle locking means for the alternative embodiment of the instrument comprises closed rings 110 and 111 which are integrally formed on handle element 108 together with partially closed ring 112 integrally formed on handle element 109. Knob 113 is biased outwardly of the handle means or to the left, as viewed in FIG. 14, by means of compression spring 114. As discussed in connection with knob 13, knob 113 would also be operable if disposed on the opposite side of the handle means. Attached to knob 113 is a locking rod which comprises an
8
SUBSTITUTE SHEET (EULE 26) inner portion 115 which is of smaller diameter than associated outer portion 116. Retaining pin 117 is secure on the end of the locking rod remote from knob 113 and acts to prevent disengagement of the locking rod from the instrument handle means. According to the alternative embodiment of this invention, ring 112 is provided with bevelled surface 112a as best viewed in FIG. 15.
Also according to the alternative embodiment of the invention, inner rod 102 and the associated working tip of the instrument are disjointably connected to hollow tube 101 by means similar to that shown and described in connection with FIGS.7-9. More specifically and as best shown in FIGS. 16-18, locking pins 125 and 126 are attached to the housing for linkage mechanism 106 in a spring-like fashion and are provided, respectively, with notches 127 and 128. It has been found that the optimum metallurgical compound for locking pins 125 and 126 is steel 420 heat treated. Notches 127 and 128 are shaped in a rounded configuration, as best shown in FIG. 18, in order to facilitate separation of hollow tube 101 and inner rod 102. Finally, locking tabs 129 and 130 are integrally formed on the inner surface of outer hollow tube 101.
In order to assemble the instrument depicted in
9
SUBSTITUTE SHEET (BUUE 26) FIGS. 11 - 18, inner rod 102 is slipped into hollow tube 101 and locking element 103 is inserted into slot 119. Then with handle element 108 and associated locking means disposed as shown in FIG. 14 and with inner surface 116a of enlarged portion 116 spaced from the adjacent surface 110a of closed ring 110, ring 112 is simply inserted into the gap between surfaces 110a and 116a. As ring 112 moves into position around smaller diameter portion 115 by means of its open segment, the locking rod is progressively forced to the right to an increasing degree by means of bevelled edge 112a. Then, when ring 112 is fully seated around the locking rod, larger diameter portion 116 is caused to move to the left by means of compression spring 114 causing ring 112 to snap into a locked disposition around outer portion 116. By this means, handle elements 108 and 109 are automatically locked together without having to manipulate knob 113.
Generally simultaneously with this operation, inner rod 102 is maneuvered into an interlocked relation with outer hollow tube 101 by means of notches 127 and 128 of locking pins 125 and 126 which form an interlocked relationship, respectively, with locking tabs 129 and 130 integrally formed on the inner surface of outer hollow tube 101. The instrument is then disposed in a fully assembled operational condition as shown in FIG. 11. In order to disassemble the fully assembled instrument, it is simply necessary to manually press knob 113 inwardly so as to allow ring 112 to disengage smaller diameter portion 115 of the locking rod through the open segment of ring 112 and simultaneously locking element 103 is removed from slot 119. Then the user must simply grasp the distal end of the instrument around the housing for linkage mechanism 106 such that pressure is applied to the instrument in an imaginary plane intersecting locking pins 125 and 126. Due to the spring-like nature of locking pins 125 and 126 and since the section of inner rod 102 adjacent locking pins 125 and 126 is of smaller diameter than the remainder of inner rod 102, this pressure will cause one of the locking pins to rotate inwardly toward the axis of inner rod 102. Since notches 127 and 128 are rounded, the locking pin which did not rotate into disengagement is easily caused to disengage its respective locking tab whereby inner rod 102 is then manually pulled outwardly through hollow tube 101.
Following disassembly, sterilization of the instrument components is undertaken. Then the alternative embodiment of the instrument is reassembled by inserting inner rod 102 into outer hollow tube 101. Locking element 103 is inserted into slot 119 and
11
SUBSnrurES«EET RUt simultaneously locking pins 125 and 126 form an interlocked relationship with locking tabs 129 and 130, respectively, and ring 112 is automatically snapped into position around larger diameter portion 116 of the locking rod.
12
SUBSTffUTES»Eπ(RUlE26)

Claims

1. A surgical instrument comprising a hollow tube having a longitudinal axis, an inner rod having proximal and distal ends and extending through said hollow tube, handle means for imparting reciprocal movement to said inner rod relative to said hollow tube, a working tip attached to said distal end, and means to detachably interconnect said hollow tube and said inner rod including a locking pin connected to said inner rod and a locking tab formed on the inner surface of said hollow tube such that said locking pin and said locking tab are capable of being interlocked.
2. A surgical instrument according to claim 1 wherein said locking pin comprises a locking notch and wherein said locking notch engages said locking tab in an interlocked relationship.
3. A surgical instrument according to claim 2 wherein said locking notch is of a generally rounded configuration.
4. A surgical instrument according to claim 1 wherein said locking pin extends in a direction toward said proximal end.
5. A surgical instrument according to claim 1 wherein said working tip comprises a pair of jaws.
6. A surgical instrument according to claim 1 wherein said handle means is of ergonomic configuration.
7. A surgical instrument comprising a hollow tube having a longitudinal axis, an inner rod having proximal and distal ends and extending through said hollow tube, handle means for imparting reciprocal movement to said inner rod relative to said hollow tube, a working tip attached to said distal end, said handle means comprising a pair of handles, a locking rod engageable with said handle means and comprising inner and outer portions, one of said portions being of smaller diameter than the other of said portions, and one of said handles being engageable with respect to said locking rod by means of a bevelled partially closed ring.
8. A surgical instrument according to claim 7 wherein a closed ring is formed on the other of said handles and wherein said other portion is spaced from said closed ring.
9. A surgical instrument according to claim 8 wherein said other portion is biased toward said closed ring.
10. A surgical instrument according to claim 7 wherein the beveled portion of said partially closed ring is slidably engageable with said other portion.
11. A surgical instrument comprising a hollow tube having a longitudinal axis, an inner rod having proximal and distal ends and extending through said hollow tube, handle means for imparting reciprocal movement to said inner rod relative to said hollow tube, a working tip attached to said distal end, a collet coaxial with said hollow tube and reciprocal with respect thereto, a locking pin connected to said inner rod, an attachment housing connected to said hollow tube and being coaxially disposed with respect to said inner rod, said locking pin comprising a locking notch, said locking notch engaging a portion of said attachment housing in an interlocked relationship, said collect comprising a bevelled edge, and a portion of said locking pin disposed in sliding engagement with said bevelled edge.
12. A surgical instrument according to claim 11, wherein said working tip comprises a pair of jaws.
13. A surgical instrument according to claim 11 wherein said handle means is of ergonomic configuration.
14. A surgical instrument comprising a hollow tube having a longitudinal axis, an inner rod having proximal and distal ends and extending through said hollow tube, handle means for imparting reciprocal movement to said inner rod relative to said hollow tube, a working tip attached to said distal end, said handle means comprising a pair of handles, a locking rod engageable with said handle means and comprising elongated inner and outer portions, one of said portions being of smaller diameter than the other of said portions, each of said portions being of substantially uniform diameter throughout its entire length, and said locking rod being moveable a limited distance such that in one position one of said handles is disengageable with respect to said one of said portions and in another position is interlocked with respect to said other of said portions.
15. A surgical instrument according to claim 14 wherein said locking rod is spring biased.
16. A surgical instrument according to claim 14 wherein a partially closed ring is formed on said one of said handles and wherein said partially closed ring cooperates with said locking rod.
17. A surgical instrument comprising a hollow tube having a longitudinal axis, an inner rod having proximal and distal ends and extending through said hollow tube, handle means for imparting reciprocal movement to said inner rod relative to said hollow tube, a working tip attached to said distal end, said hollow tube and said inner rod being disjointably interconnected, a collet coaxial with said hollow tube and reciprocal with respect thereto in a direction
16
SUBSTTTUIE SHEET RULE 26 parallel to the axis of said hollow tube, a locking pin connected to said inner rod, an attachment housing connected to said hollow tube, said locking pin and said attachment housing being disjointably interconnected, said collet comprising a bevelled edge, and a portion of said locking pin disposed in sliding engagement with said bevelled edge.
PCT/US1994/007992 1993-07-19 1994-07-19 Surgical instrument capable of disassembly WO1995003000A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP94922577A EP0710088A4 (en) 1993-07-19 1994-07-19 Surgical instrument capable of disassembly
AU73637/94A AU7363794A (en) 1993-07-19 1994-07-19 Surgical instrument capable of disassembly
JP7505219A JPH09501578A (en) 1993-07-19 1994-07-19 Degradable surgical instruments

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US08/093,477 US5336238A (en) 1993-07-19 1993-07-19 Surgical instrument capable of disassembly
US08/134,087 1993-10-08
US08/134,087 US5507774A (en) 1993-07-19 1993-10-08 Surgical instrument capable of disassembly
US08/093,477 1993-10-08

Publications (1)

Publication Number Publication Date
WO1995003000A1 true WO1995003000A1 (en) 1995-02-02

Family

ID=26787584

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1994/007992 WO1995003000A1 (en) 1993-07-19 1994-07-19 Surgical instrument capable of disassembly

Country Status (5)

Country Link
US (2) US5507774A (en)
EP (1) EP0710088A4 (en)
JP (1) JPH09501578A (en)
AU (1) AU7363794A (en)
WO (1) WO1995003000A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022116378A1 (en) 2022-06-30 2024-01-04 Karl Storz Se & Co. Kg SURGICAL INSTRUMENT AND METHOD FOR ASSEMBLY/DISASSEMBLY OF THE SURGICAL INSTRUMENT

Families Citing this family (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4341735C1 (en) * 1993-12-08 1995-08-10 Aesculap Ag Surgical tubular shaft instrument
DE4341734C1 (en) * 1993-12-08 1994-09-29 Aesculap Ag Instrument for surgical purposes
US5718714A (en) * 1994-10-11 1998-02-17 Circon Corporation Surgical instrument with removable shaft assembly
US5879365A (en) * 1995-04-04 1999-03-09 United States Surgical Corporation Surgical cutting apparatus
US5873886A (en) * 1995-04-04 1999-02-23 United States Surgical Corporation Surgical cutting apparatus
US5810864A (en) * 1995-09-03 1998-09-22 Schaller; Guenter Surgical instrument system
US5871493A (en) * 1995-10-31 1999-02-16 Smith & Nephew Endoscopy Inc. Surgical instrument handpiece and system
US5782748A (en) * 1996-07-10 1998-07-21 Symbiosis Corporation Endoscopic surgical instruments having detachable proximal and distal portions
DE19632298B4 (en) * 1996-08-10 2004-09-23 Deutsches Zentrum für Luft- und Raumfahrt e.V. Gripping device for use in minimally invasive surgery
US5964717A (en) * 1997-01-06 1999-10-12 Symbiosis Corporation Biopsy forceps having detachable handle and distal jaws
DE19722063C2 (en) * 1997-05-27 1999-07-01 Storz Karl Gmbh & Co Protective cap for HF surgical instruments
DE19741054C1 (en) * 1997-09-18 1998-12-17 Aesculap Ag & Co Kg Surgical tubular shaft instrument
US5913874A (en) * 1997-09-25 1999-06-22 Cabot Technology Corporation Cartridge for a surgical instrument
US6106539A (en) 1998-04-15 2000-08-22 Neosurg Technologies Trocar with removable, replaceable tip
FR2778084B1 (en) * 1998-04-29 2000-09-15 Soprane Sa LINKING DEVICE FOR SURGICAL INSTRUMENT
US6086606A (en) * 1998-05-06 2000-07-11 Knodel; Bryan D. Manually-operable surgical tool suitable for laparoscopic operations, readily adaptable for different functions by quick change of tissue-contacting operational elements
US6280417B1 (en) 1999-02-23 2001-08-28 Needberg Technologies, Inc. Trocar
US6196969B1 (en) 1999-05-21 2001-03-06 Lab Engineering & Manufacturing, Inc. Tissue retractor adapted for the attachment of an auxiliary element
US6077290A (en) * 1999-09-10 2000-06-20 Tnco, Incorporated Endoscopic instrument with removable front end
US6494846B1 (en) 2000-06-20 2002-12-17 Wayne Margolis Family Partnership, Ltd. Dual-mode catheter
US6638280B2 (en) 2001-10-10 2003-10-28 Codman & Shurtleff, Inc. Rongeur with drainage
US6991633B2 (en) * 2001-10-10 2006-01-31 Codman & Shurtleff, Inc. Rongeur with detachable crossbar
US6685710B2 (en) 2001-10-10 2004-02-03 Codman & Shurtleff, Inc. Rongeur with detachable crossbar
US20030097146A1 (en) * 2001-11-19 2003-05-22 Scimed Life Systems, Inc. Endoscopic surgical instrument
US7131973B2 (en) * 2002-05-16 2006-11-07 Boston Scientific Scimed, Inc. Bone anchor implantation device
US20060183076A1 (en) * 2003-02-24 2006-08-17 George Nikolov Sterilizable lower mandibular tooth extraction forceps
US20050026111A1 (en) * 2003-07-31 2005-02-03 George Nikolov Sterilizable lower mandibular tooth extraction forceps
US20060183077A1 (en) * 2003-02-24 2006-08-17 George Nikolov Brush and sterilizable tooth extraction forceps
US20040166475A1 (en) * 2003-02-24 2004-08-26 George Nikolov Sterilizable dental and surgical instrument
US7025775B2 (en) * 2003-05-15 2006-04-11 Applied Medical Resources Corporation Surgical instrument with removable shaft apparatus and method
CA2593552A1 (en) * 2005-01-19 2006-07-27 Applied Medical Resources Corporation Disposable laparoscopic instrument
US7833236B2 (en) * 2005-06-13 2010-11-16 Ethicon Endo-Surgery, Inc. Surgical suturing apparatus with collapsible vacuum chamber
US20060287641A1 (en) * 2005-06-16 2006-12-21 Alfred Perlin Laparoscopic surgical instrument for in situ tool exchange
WO2008005433A1 (en) * 2006-06-30 2008-01-10 Bovie Medical Surgical instrument with detachable tool assembly
DE102006052407A1 (en) * 2006-11-08 2008-05-15 Olympus Winter & Ibe Gmbh Surgical jaw instrument, has actuating rod and jaw head connected detachably with handling device transverse to shaft direction or in proximal direction parallel to shaft direction, and cable rigidly connected to actuating rod
DE102007021658A1 (en) * 2007-05-04 2008-11-06 Karl Storz Gmbh & Co. Kg Dismountable medical forceps system
US9295485B2 (en) 2009-10-09 2016-03-29 Ethicon Endo-Surgery, Inc. Loader for exchanging end effectors in vivo
USD667553S1 (en) * 2010-05-07 2012-09-18 Karl Storz Gmbh & Co. Kg Forceps
DE102010044982A1 (en) 2010-09-10 2012-03-15 Dannoritzer Medizintechnik Gmbh & Co. Kg Surgical instrument
DE102011056235A1 (en) * 2011-12-09 2013-06-13 Aesculap Ag Medical instrument
DE102012200073A1 (en) * 2012-01-04 2013-07-04 Karl Storz Gmbh & Co. Kg Medical instrument
US9113901B2 (en) 2012-05-14 2015-08-25 Covidien Lp Modular surgical instrument with contained electrical or mechanical systems
DE102012016396B4 (en) * 2012-08-21 2015-04-02 Olympus Winter & Ibe Gmbh Surgical forceps
US9125681B2 (en) 2012-09-26 2015-09-08 Ethicon Endo-Surgery, Inc. Detachable end effector and loader
US20140171977A1 (en) 2012-12-13 2014-06-19 Ethicon Endo-Surgery, Inc. Pawl Mechanism in Circular Needle Applier
DE102013101651A1 (en) * 2013-02-20 2014-09-04 Karl Storz Gmbh & Co. Kg Endoscopic instrument and shaft for an endoscopic instrument
US9451937B2 (en) * 2013-02-27 2016-09-27 Ethicon Endo-Surgery, Llc Percutaneous instrument with collet locking mechanisms
WO2016015233A1 (en) 2014-07-30 2016-02-04 Covidien Lp Surgical instruments capable of being selectively disassembled to facilitate replacement of disposable components and/or sterilization of reusable components
USD753300S1 (en) * 2014-08-14 2016-04-05 Karl Storz Gmbh & Co. Kg Grasping forceps
USD753299S1 (en) * 2014-08-14 2016-04-05 Karl Storz Gmbh & Co. Kg Grasping forceps
WO2016169037A1 (en) 2015-04-24 2016-10-27 Covidien Lp Vessel sealing device with fine dissection function
DE102016104621A1 (en) * 2016-03-14 2017-09-14 Robert Bogdoll Surgical instrument
US20220079684A1 (en) * 2020-09-14 2022-03-17 Jaiben GEORGE Medical device for guiding a surgical instrument

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2113246A (en) * 1937-05-17 1938-04-05 Wappler Frederick Charles Endoscopic forceps
US4763668A (en) * 1985-10-28 1988-08-16 Mill Rose Laboratories Partible forceps instrument for endoscopy
US5188494A (en) * 1992-04-21 1993-02-23 Itt Corporation Torque indicator device and method for use with a threaded fastener

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1510416A (en) * 1922-04-15 1924-09-30 Pietz Frederick Forceps
US3735763A (en) * 1967-01-10 1973-05-29 Amp Inc Hemostat
US3870048A (en) * 1973-07-30 1975-03-11 In Bae Yoon Device for sterilizing the human female or male by ligation
US3964468A (en) * 1975-05-30 1976-06-22 The Board Of Trustees Of Leland Stanford Junior University Bioptome
US4085743A (en) * 1976-03-02 1978-04-25 In Bae Yoon Multiple occlusion ring applicator and method
US4369788A (en) * 1980-01-31 1983-01-25 Goald Harold J Reversed forceps for microdisc surgery
FR2505170B1 (en) * 1981-05-06 1985-08-02 Metallisations Traitements Opt BIOPSY TONGS
DE8316034U1 (en) * 1983-06-01 1983-09-29 Richard Wolf Gmbh, 7134 Knittlingen Scissor handle for exchangeable pliers bits
US4760848A (en) * 1986-11-03 1988-08-02 Hasson Harrith M Rotational surgical instrument
US4962770A (en) * 1987-09-18 1990-10-16 John M. Agee Surgical method
EP0380874A1 (en) * 1989-01-31 1990-08-08 C.R. Bard, Inc. Disposable biopsy forceps
JPH0347246A (en) * 1989-04-13 1991-02-28 Olympus Optical Co Ltd Treating tool for endoscope
US5133735A (en) * 1990-05-10 1992-07-28 Symbiosis Corporation Thumb-activated actuating member for imparting reciprocal motion to push rod of a disposable laparoscopic surgical instrument
US5133736A (en) * 1990-05-10 1992-07-28 Symbiosis Corporation Investment cast end effectors for disposable laparoscopic surgical instrument
US5325866A (en) * 1993-04-20 1994-07-05 Jacek Krzyzanowski Flexible biopsy forceps

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2113246A (en) * 1937-05-17 1938-04-05 Wappler Frederick Charles Endoscopic forceps
US4763668A (en) * 1985-10-28 1988-08-16 Mill Rose Laboratories Partible forceps instrument for endoscopy
US5188494A (en) * 1992-04-21 1993-02-23 Itt Corporation Torque indicator device and method for use with a threaded fastener

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022116378A1 (en) 2022-06-30 2024-01-04 Karl Storz Se & Co. Kg SURGICAL INSTRUMENT AND METHOD FOR ASSEMBLY/DISASSEMBLY OF THE SURGICAL INSTRUMENT

Also Published As

Publication number Publication date
EP0710088A4 (en) 1997-08-13
US5618308A (en) 1997-04-08
US5507774A (en) 1996-04-16
AU7363794A (en) 1995-02-20
EP0710088A1 (en) 1996-05-08
JPH09501578A (en) 1997-02-18

Similar Documents

Publication Publication Date Title
US5507774A (en) Surgical instrument capable of disassembly
US5336238A (en) Surgical instrument capable of disassembly
US6595984B1 (en) Laparoscopic instrument with a detachable tip
US5810879A (en) Laparoscopic instrument
US5893874A (en) Surgical instrument
US5618304A (en) Surgical instrument
US6077290A (en) Endoscopic instrument with removable front end
US5893875A (en) Surgical instrument with replaceable jaw assembly
JP3911068B2 (en) Joint motion transmission mechanism for surgical instruments
US5545170A (en) Surgical instrument
US6007560A (en) Biopsy forceps having detachable handle and distal jaws
US5593402A (en) Laparoscopic device having a detachable distal tip
US6673092B1 (en) Medical forceps with two independently moveable jaw parts
US5352235A (en) Laparoscopic grasper and cutter
US5176702A (en) Ratchet locking mechanism for surgical instruments
US20090171147A1 (en) Surgical instrument
US20070021766A1 (en) Surgical handpiece with compact clutch and anti-wobble coupling head
JP2007500569A (en) Surgical instrument and method having a removable shaft device
CN110811746A (en) Rotary knob assembly and surgical instrument including the same
JPH1043189A (en) Joint movement transmitting mechanism for surgical machine
WO2024032493A1 (en) Minimally invasive surgical instrument assembly
JP2000271134A (en) Endoscopic forceps
WO1993016644A1 (en) Endoscopic surgical instrument with rotary end-effect element
US20050033356A1 (en) Medical grasping and holding instrument
CN111920478A (en) Ultrasonic knife capable of quickly replacing sleeve

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AU CA JP

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WWE Wipo information: entry into national phase

Ref document number: 1994922577

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1994922577

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: CA

WWW Wipo information: withdrawn in national office

Ref document number: 1994922577

Country of ref document: EP