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US3903892A - Forceps means for removing cellular tissue from the body cavities - Google Patents

Forceps means for removing cellular tissue from the body cavities Download PDF

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Publication number
US3903892A
US3903892A US361152A US36115273A US3903892A US 3903892 A US3903892 A US 3903892A US 361152 A US361152 A US 361152A US 36115273 A US36115273 A US 36115273A US 3903892 A US3903892 A US 3903892A
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Prior art keywords
tube
wire
surgical instrument
slider
body cavities
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US361152A
Inventor
Osamu Komiya
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Olympus Corp
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Olympus Optical Co Ltd
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/32—Surgical cutting instruments
    • A61B17/3205—Excision instruments
    • A61B17/32056—Surgical snare instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00064—Constructional details of the endoscope body
    • A61B1/00071—Insertion part of the endoscope body
    • A61B1/0008—Insertion part of the endoscope body characterised by distal tip features
    • A61B1/00098—Deflecting means for inserted tools
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/00163—Optical arrangements
    • A61B1/00174—Optical arrangements characterised by the viewing angles
    • A61B1/00177—Optical arrangements characterised by the viewing angles for 90 degrees side-viewing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/22—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/221—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/24—Surgical instruments, devices or methods for use in the oral cavity, larynx, bronchial passages or nose; Tongue scrapers
    • A61B17/26—Tonsillotomes, with or without means for stopping bleeding
    • 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
    • A61B18/1492—Probes or electrodes therefor having a flexible, catheter-like structure, e.g. for heart ablation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/22—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/221—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions
    • A61B2017/2212—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions having a closed distal end, e.g. a loop
    • 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
    • A61B2018/1405—Electrodes having a specific shape
    • A61B2018/1407—Loop
    • A61B2018/141—Snare
    • 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
    • A61B90/30—Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure
    • A61B2090/306—Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure using optical fibres

Definitions

  • the present invention relates to a surgical instrument means for removing cellular tissue such as a polyp from the body cavities.
  • a rcmoving means is usually inserted into the body cavity, for example into the stomach, together with an endo scope and the polyp or the like is removed by observing that removing means and polyp or the like to be removed.
  • the principal object of the present invention to provide a surgical instrument means for removing cellular tissue from the body cavities arranged to easily form a loop, when inserted into a body cavity, being operated from outside and to remove the polyp or the like by said loop with high reliability and by very simple operation.
  • FIG. I through FIG. 3 show an example of endoscope for using the surgical instrument means for removing cellular tissue from the body cavities according to the present invention by inserting said surgical instrument means into said endoscope;
  • FIG. 4a through FIG. 40 show sectional views of an embodiment of the surgical instrument means for removing cellular tissue from the body cavities according to the present invention.
  • FIG. shows another embodiment of the surgical instrument means according to the present invention.
  • FIG. 1 shows an example of endoscope to be used by mounting the surgical instrument means for removing cellular tissue from the body cavities according to the present invention.
  • Numeral l designates a control unit
  • numeral 2 designates an eyepiece
  • numeral 3 designates a flexible tube
  • numeral 4 designates the bending section
  • numeral 5 designates the distal end.
  • Numeral 6 designates the surgical instrument opening through which the below mentioned surgical instrument means for removing cellular tissue from the body cavities according to the present invention is to be inserted and led through the surgical instrument channel provided in the endoscope and the end of said surgical instrument means is to be projected through the surgicut inst] unicnt outlet.
  • FIG. 1 shows an example of endoscope to be used by mounting the surgical instrument means for removing cellular tissue from the body cavities according to the present invention.
  • Numeral l designates a control unit
  • numeral 2 designates an eyepiece
  • numeral 3 designates a flexible tube
  • numeral 4 designates the bending section
  • FIG. 2 shows an enlarged view of distal end of said endoscope.
  • numeral 7 designates an image guide comprising optical fiber
  • numeral 8 designates an objective
  • numeral 9 designates a prism.
  • Numeral l0 designates the surgical instrument channel through which the surgical instrument means for removing cellular tissue from the body cavities 20 according to the present invention is to be passed as described in the above, and the end of said surgical instrument means 20 is to be projected through the surgical instrument outlet 11.
  • Numeral I2 designates a light guide comprising optical fiber for lighting the object such as the inside of the stomach.
  • FIG. 3 shows a sectional view along the line
  • numeral 21 designates a tube made ofa flexible material such as plastics. At the end of said tube, a stepped portion 212: is formed and, therefore, the bore at the stepped portion is smaller than the bore at the other portions.
  • Numeral 22 designates a slider having a small hole 22a at its center which is slidably inserted in the tube 21.
  • Numeral 23 designates a wire made of a resilient material. As shown in FIG. 4c, said wire 23 has two bent portions, i.e., the first and second bent portions 23a and 23b formed by plastic deformation so that said wire 23 forms two circular arcs 23c and 23d and a linear portion 236.
  • bent portions 230 and 23 here mean that said bent portions change their form accordingly when the wire is forced into the tube 21 for example as shown in FIG. 40, but when the wire is free, said bent portions are put to bent condition again as shown in FIG. 40. Thus, the projected portion of the wire returns to the semicircular form.
  • One end of said wire 23 is fixed to the slider 22 at the end of the circular arc 23c and the other end of the wire 23, i.e., the linear portion 232 of the wire 23 is passed through the small hole 22a of the slider 22.
  • Said wire 23 is usually housed in the tube as illustrated in FIG. 40 by the below-mentioned method, and only the first bent portion 23a is slightly projected from the end of the tube 21.
  • Numeral 24 designates a stopper fixed to the circular arc portion 23d of the wire 23 and the outer diameter of said stopper 24 is larger than the small hole 220 of the slider 22.
  • Numeral 25 designates an operating means having a slit 25a.
  • Numeral 26 designates a cylindrical member connecting the tube 21 and operating means 25.
  • Numeral 27 designates a spring provided in the tube 21 between the slider 22 and cylindrical member 26.
  • Numeral 28 designates an operating ring which has two flanges 28a and 28b and is slidably mounted to the operating means 25.
  • Numeral 29 designates a fixing screw which is screwed into the tapped hole 28c of the operating ring 28 and which is for fixing the operating ring 28 to the operating means 25.
  • Numeral 30 designates a ring mounted on one end of the operating means 25.
  • Numeral 31 designates a protuberance fixed to the operating ring 28 and is inserted in the slit 25a provided to the operating means 25 in order to guide the operating ring 28 so that it can slide along the operating means without rotating.
  • the surgical instrument means for removing cellular tissue from the body cavities is arranged as described in the above. Therefore, when the thumb of one hand is inserted into the ring holding the operating ring 28 by the forefinger and middle finger of the same hand, the fixing screw 29 is loosened by the other hand and the operating ring 28 is moved toward the ring 30, the end of the wire 23 fixed to the operating ring 28 is pulled toward said ring 30. So, the second bent portion 23b and circular arc portion 230' of the approximately semicircular loop shown in FIG. 4c are gradually stretched and become .inear. and said loop becomes narrower, When said loop closes as shown in FIG.
  • the stopper 24 contacts the slider 22 and said slider 22 moves in the tube 21 toward the operating means 25 acting against the spring 27.
  • said wire 23 is drawn into the tube 21 by leaving its first bent portion 230 at the outermost position and is housed in the tube 21 as shown in FIG. 4a.
  • said surgical instrument means is first inserted into the endoscope as shown in FIG. 1 through FIG. 3 through its surgical instrument opening and, then, is inserted into the stomach together with said endoscope. After that, inserting the thumb of one hand into the ring 30 and holding the operating ring 28 by the forefinger and middle finger, the fixing screw 29 is loosened by the other hand. When the gripping force of said operating ring 28 is then gradually released by observing with the endoscope, the slider 22 slides toward the stepped portion 210 of the tube 21 because of the force of the spring 27.
  • the wire 23 projects from the tube 21 by keeping its first bent portion 2311 at the outermost position and the operating ring 28 slides toward the cylindrical member 26.
  • said slider 22 stops contacting said stepped portion 210
  • one end of the wire 23 also stops together with said slider 22.
  • the other end of the wire 23 still moves, and the portion of said wire 23 projected outside the tube 21 shapes a semicircular loop which is pre'determined by plastic deformation.
  • it is arranged to shape the semicircular loop by providing two bent portions 23a and 23b.
  • the operating ring 28 When the polyp to be removed comes into the semicircular loop as above, the operating ring 28 is moved toward the ring 30. Consequently, the wire 23 also moves together with the operating ring 28, the portion of the wire 23 projected out side the tube 21 changes its loop form from that shown in FIG. 41' to that shown in FIG. 4b and then to FIG. as already explained in the above, thus the polyp is pinched out. Therefore, when the above-mentioned surgical instrument means for removing cellular tissue from the body cavities is used, the loop can be easily shaped in the body cavities because a pre-determined loop is formed by plastic deformation and, moreover, said loop can be easily led to the portion of the cellular tissue to be removed such as a polyp or the like.
  • FIG. 5 Another embodiment of the present invention is described according to FIG. 5.
  • the same reference numbers are given respectively to those parts which are same as those in the former embodiment and detailed explanation is omitted.
  • the cellular tissue is removed by flowing a highfrequency electric current to the wire which has formed a loop.
  • the tube 101 is made of an electrically insulating material, for example, plastics and a holding ring 1010 is fitted in the end portion of said tube 101.
  • the operating ring 28 is locked by the fixing screw 29 in the condition that the wire 23 is housed in the tube 101, that is, the operating ring 28 is moved toward the ring 30. Then, said surgical instrument means is inserted together with the endoscope into the stomach of the patient who is lying by putting on a wide electrode plate closely contacting his back, and the base of the polyp to be removed is pinched by the loop of the wire 23 by the same operation as the case of the former embodiment. When said loop is closed to the pre-determined extent, a highfrequency electric current is applied between said electrode plate and said wire 23.
  • this embodiment has further advantages that bleeding is not caused when removing the polyp or the like and, therefore, the wound caused by the removing operation heals quickly and, moreover, the removing operation can be performed easily.
  • the surgical instrument means according to the present invention has a wire arranged, by plastic deformation, to form a predetermined loop. Therefore, said pre-determined loop can be easily developed in the body cavities and can be easily led to the cellular tissue portion such as the polyp to be removed. Besides, the number of component parts is not increased conspicuously and it is not necessary to use component parts of complicated shapes.
  • the present invention provides a surgical instru ment means of simple construction for removing cellular tissue from the body cavities.
  • a surgical instrument comprising a tube with a stepped portion in the inside at one end of said tube, a slider slidably arranged in said tube and having a center hole, a wire made of a resilient material having at least a bent portion, one end of said wire being fixed to said slider and the other end of said wire being passed through the center hole of said slider and being fixed to an operating ring provided at an end of said tube opposite said one end, and a stopper with an outer diameposition on the operating ring side of said slider and arranged to bias said slider against said stepped portion in the inside at said one end of said tube

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Abstract

A surgical instrument means for removing cellular tissue from the body cavities arranged to shape a loop easily by using a wire having at least two bent portions formed by plastic deformation.

Description

United States Patent [1 1 Komiya 1 Sept. 9, 1975 FORCEPS MEANS FOR REMOVING 2.054.149 9/1936 Wappler H 128/320 CELLULAR TISSUE FROM THE BODY 3.739.784 6/]973 lloh H 128/320 CAVITIFQ 3.739.784 6/l973 lluh l. 128/320 (75] lnvcnto Osamu Komiya, Tokyo Japan FOREIGN PATENTS OR APPLICATIONS l W304 6/[877 Franco H [28/320 {73] Assignee: Olympus Optical C0.. Lldu P 23.914 4/l906 Austria [28/320 [22] Filed: May l7. 1973 PIIIHUI') EmminerChanning L Pace [2 H Appl 36i'l52 Attorney Agent or Firmcushmzm, Darby &
Cushman [52] US. Cl. l28/303.l5 [51] Int. Cl.'- A618 l7/36 57; ABSTRACT [58] Field of Search Q8/3036 30316 A surgical instrument means for removing cellulg; tis.
sue from the body cavities arranged to shapcafoop. [56] B Cited easily by using a wire having at least two bent ,pdftions UNITEID STATES PATENTS formed by plastic deformation.
798,831) 9/l905 Stowe 128/320 v 1,731.06) 10/1929 Herman Fix/303.16 2 7 D'awmg figures FORCEPS MEANS FOR REMOVING CELLULAR TISSUE FROM THE BODY CAVITIES BACKGROUND OF THE INVENTION a. Field of the Invention The present invention relates to a surgical instrument means for removing cellular tissue such as a polyp from the body cavities.
b. Description of the Prior Art When removing cellular tissue from the body cavities, for example when removing a polyp or the like caused on the mucous membrane of the stomach, a rcmoving means is usually inserted into the body cavity, for example into the stomach, together with an endo scope and the polyp or the like is removed by observing that removing means and polyp or the like to be removed.
As the removing means for such purposes, those incorporating scissors or cup forceps are known widely. As for those removing means incorporating scissors, it is necessary to cut into the base of, for example, the polyp repeatedly because said scissors are small and, therefore, the operation is complicated. When using the removing means incorporating cup forceps, the tissue is removed by pinching it out little by little and, therefore, it takes a long time.
SUMMARY OF THE INVENTION It is, therefore, the principal object of the present invention to provide a surgical instrument means for removing cellular tissue from the body cavities arranged to easily form a loop, when inserted into a body cavity, being operated from outside and to remove the polyp or the like by said loop with high reliability and by very simple operation.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. I through FIG. 3 show an example of endoscope for using the surgical instrument means for removing cellular tissue from the body cavities according to the present invention by inserting said surgical instrument means into said endoscope;
FIG. 4a through FIG. 40 show sectional views of an embodiment of the surgical instrument means for removing cellular tissue from the body cavities according to the present invention; and
FIG. shows another embodiment of the surgical instrument means according to the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an example of endoscope to be used by mounting the surgical instrument means for removing cellular tissue from the body cavities according to the present invention. Numeral l designates a control unit, numeral 2 designates an eyepiece, numeral 3 designates a flexible tube, numeral 4 designates the bending section and numeral 5 designates the distal end. Numeral 6 designates the surgical instrument opening through which the below mentioned surgical instrument means for removing cellular tissue from the body cavities according to the present invention is to be inserted and led through the surgical instrument channel provided in the endoscope and the end of said surgical instrument means is to be projected through the surgicut inst] unicnt outlet. FIG. 2 shows an enlarged view of distal end of said endoscope. In this figure, numeral 7 designates an image guide comprising optical fiber, numeral 8 designates an objective and numeral 9 designates a prism. Numeral l0 designates the surgical instrument channel through which the surgical instrument means for removing cellular tissue from the body cavities 20 according to the present invention is to be passed as described in the above, and the end of said surgical instrument means 20 is to be projected through the surgical instrument outlet 11. Numeral I2 designates a light guide comprising optical fiber for lighting the object such as the inside of the stomach. FIG. 3 shows a sectional view along the line |lI-III in FIG. 2. The above-mentioned image guide 7, surgical instrument channel 10 and light guide 12 are arranged in the tube 13 as shown in FIG. 3.
In the following, the construction of said sur'gical instrument means for removing cellular tissue from the body cavities according to the present invention as shown in FIG. 4a through FIG. 4c is described in detail.
In these figures, numeral 21 designates a tube made ofa flexible material such as plastics. At the end of said tube, a stepped portion 212: is formed and, therefore, the bore at the stepped portion is smaller than the bore at the other portions. Numeral 22 designates a slider having a small hole 22a at its center which is slidably inserted in the tube 21. Numeral 23 designates a wire made of a resilient material. As shown in FIG. 4c, said wire 23 has two bent portions, i.e., the first and second bent portions 23a and 23b formed by plastic deformation so that said wire 23 forms two circular arcs 23c and 23d and a linear portion 236. (Plastically deformed bent portions 230 and 23!) here mean that said bent portions change their form accordingly when the wire is forced into the tube 21 for example as shown in FIG. 40, but when the wire is free, said bent portions are put to bent condition again as shown in FIG. 40. Thus, the projected portion of the wire returns to the semicircular form.) One end of said wire 23 is fixed to the slider 22 at the end of the circular arc 23c and the other end of the wire 23, i.e., the linear portion 232 of the wire 23 is passed through the small hole 22a of the slider 22. Said wire 23 is usually housed in the tube as illustrated in FIG. 40 by the below-mentioned method, and only the first bent portion 23a is slightly projected from the end of the tube 21. Numeral 24 designates a stopper fixed to the circular arc portion 23d of the wire 23 and the outer diameter of said stopper 24 is larger than the small hole 220 of the slider 22. Numeral 25 designates an operating means having a slit 25a. Numeral 26 designates a cylindrical member connecting the tube 21 and operating means 25. Numeral 27 designates a spring provided in the tube 21 between the slider 22 and cylindrical member 26. Numeral 28 designates an operating ring which has two flanges 28a and 28b and is slidably mounted to the operating means 25. To said operating ring 28, the end of the linear portion 23e of the wire 23, which is passed through the tube 21, is fixed so that said end can be moved along the slit 250 provided to the operating means 25, together with the operating ring 28. Numeral 29 designates a fixing screw which is screwed into the tapped hole 28c of the operating ring 28 and which is for fixing the operating ring 28 to the operating means 25. Numeral 30 designates a ring mounted on one end of the operating means 25. Numeral 31 designates a protuberance fixed to the operating ring 28 and is inserted in the slit 25a provided to the operating means 25 in order to guide the operating ring 28 so that it can slide along the operating means without rotating.
The surgical instrument means for removing cellular tissue from the body cavities according to the present invention is arranged as described in the above. Therefore, when the thumb of one hand is inserted into the ring holding the operating ring 28 by the forefinger and middle finger of the same hand, the fixing screw 29 is loosened by the other hand and the operating ring 28 is moved toward the ring 30, the end of the wire 23 fixed to the operating ring 28 is pulled toward said ring 30. So, the second bent portion 23b and circular arc portion 230' of the approximately semicircular loop shown in FIG. 4c are gradually stretched and become .inear. and said loop becomes narrower, When said loop closes as shown in FIG. 4b, the stopper 24 contacts the slider 22 and said slider 22 moves in the tube 21 toward the operating means 25 acting against the spring 27. At that time, said wire 23 is drawn into the tube 21 by leaving its first bent portion 230 at the outermost position and is housed in the tube 21 as shown in FIG. 4a.
To remove, for example, a polyp caused on the mucous membrane of the stomach by using the abovementioncd surgical instrument means for removing cellular tissue from the body cavities according to the present invention, said surgical instrument means is first inserted into the endoscope as shown in FIG. 1 through FIG. 3 through its surgical instrument opening and, then, is inserted into the stomach together with said endoscope. After that, inserting the thumb of one hand into the ring 30 and holding the operating ring 28 by the forefinger and middle finger, the fixing screw 29 is loosened by the other hand. When the gripping force of said operating ring 28 is then gradually released by observing with the endoscope, the slider 22 slides toward the stepped portion 210 of the tube 21 because of the force of the spring 27. At the same time, the wire 23 projects from the tube 21 by keeping its first bent portion 2311 at the outermost position and the operating ring 28 slides toward the cylindrical member 26. When said slider 22 stops contacting said stepped portion 210, one end of the wire 23 also stops together with said slider 22. But, the other end of the wire 23 still moves, and the portion of said wire 23 projected outside the tube 21 shapes a semicircular loop which is pre'determined by plastic deformation. In the present embodiment, it is arranged to shape the semicircular loop by providing two bent portions 23a and 23b. However, it is also possible to make the wire 23 shape the semicircular loop even when the bent portion 23b is not provided. Then, said loop is positioned around the base of the polyp to be removed. When the polyp to be removed comes into the semicircular loop as above, the operating ring 28 is moved toward the ring 30. Consequently, the wire 23 also moves together with the operating ring 28, the portion of the wire 23 projected out side the tube 21 changes its loop form from that shown in FIG. 41' to that shown in FIG. 4b and then to FIG. as already explained in the above, thus the polyp is pinched out. Therefore, when the above-mentioned surgical instrument means for removing cellular tissue from the body cavities is used, the loop can be easily shaped in the body cavities because a pre-determined loop is formed by plastic deformation and, moreover, said loop can be easily led to the portion of the cellular tissue to be removed such as a polyp or the like.
In the following, another embodiment of the present invention is described according to FIG. 5. For this embodiment, the same reference numbers are given respectively to those parts which are same as those in the former embodiment and detailed explanation is omitted.
In this embodiment, the cellular tissue is removed by flowing a highfrequency electric current to the wire which has formed a loop. The tube 101 is made of an electrically insulating material, for example, plastics and a holding ring 1010 is fitted in the end portion of said tube 101.
To remove for example a polyp caused on the mu cous membrane of the stomach by using this embodiment of the surgical instrument means for removing cellular tissue from the body cavities, the operating ring 28 is locked by the fixing screw 29 in the condition that the wire 23 is housed in the tube 101, that is, the operating ring 28 is moved toward the ring 30. Then, said surgical instrument means is inserted together with the endoscope into the stomach of the patient who is lying by putting on a wide electrode plate closely contacting his back, and the base of the polyp to be removed is pinched by the loop of the wire 23 by the same operation as the case of the former embodiment. When said loop is closed to the pre-determined extent, a highfrequency electric current is applied between said electrode plate and said wire 23. Thus, the polyp is burnt off smoothly by the high-frequency current which flows from the loop to said electrode plate. In addition to advantages of the former embodiment, this embodiment has further advantages that bleeding is not caused when removing the polyp or the like and, therefore, the wound caused by the removing operation heals quickly and, moreover, the removing operation can be performed easily.
As described in detail in the above, the surgical instrument means according to the present invention has a wire arranged, by plastic deformation, to form a predetermined loop. Therefore, said pre-determined loop can be easily developed in the body cavities and can be easily led to the cellular tissue portion such as the polyp to be removed. Besides, the number of component parts is not increased conspicuously and it is not necessary to use component parts of complicated shapes. Thus, the present invention provides a surgical instru ment means of simple construction for removing cellular tissue from the body cavities.
Though the above embodiments are described in relation to application for removing the polyp caused on the mucous membrane in the stomach, it is of course evident that, when removing cellular forceps in a comparatively shallow body cavity such as an oral cavity, the surgical instrument means according to the present invention can be used independently without incorporating an endoscope. In case of such application, it is not necessary to make the tube (21 or 101) flexible,
I claim:
1. A surgical instrument comprising a tube with a stepped portion in the inside at one end of said tube, a slider slidably arranged in said tube and having a center hole, a wire made of a resilient material having at least a bent portion, one end of said wire being fixed to said slider and the other end of said wire being passed through the center hole of said slider and being fixed to an operating ring provided at an end of said tube opposite said one end, and a stopper with an outer diameposition on the operating ring side of said slider and arranged to bias said slider against said stepped portion in the inside at said one end of said tube

Claims (2)

1. A surgical instrument comprising a tube with a stepped portion in the inside at one end of said tube, a slider slidably arranged in said tube and having a center hole, a wire made of a resilient material having at least a bent portion, one end of said wire being fixed to said slider and the other end of said wire being passed through the center hole of said slider and being fixed to an operating ring provided at an end of said tube opposite said one end, and a stopper with an outer diameter larger than the diameter of the center hole of said slider attached to said wire.
2. A surgical instrument according to the claim 1, further comprising a spring arranged in said tube at a position on the operating ring side of said slider and arranged to bias said slider against said stepped portion in the inside at said one end of said tube.
US361152A 1973-05-17 1973-05-17 Forceps means for removing cellular tissue from the body cavities Expired - Lifetime US3903892A (en)

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US6443943B1 (en) * 1998-10-29 2002-09-03 Asahi Kogaku Kogyo Kabushiki Kaisha Handling section for endoscopic treatment tool
US6475222B1 (en) 1998-11-06 2002-11-05 St. Jude Medical Atg, Inc. Minimally invasive revascularization apparatus and methods
US6511491B2 (en) 1999-03-09 2003-01-28 St. Jude Medical Atg, Inc. Medical grafting methods and apparatus
US6743228B2 (en) 2001-09-12 2004-06-01 Manoa Medical, Inc. Devices and methods for tissue severing and removal
US20060161188A1 (en) * 2004-11-24 2006-07-20 Cook Incorporated Sphincterotome improvement
US20090171366A1 (en) * 2007-12-28 2009-07-02 Menicon Co., Ltd. Intraocular lens insertion tool
US20090182363A1 (en) * 2006-09-19 2009-07-16 Ovalum Ltd. Blood vessel occlusion auger
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US7850705B2 (en) 1997-04-23 2010-12-14 St. Jude Medical Atg, Inc. Medical grafting connectors and fasteners
US20110009889A1 (en) * 2004-06-09 2011-01-13 Ovalum Ltd. Blood vessel occlusion auger
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US8523879B1 (en) 2005-03-31 2013-09-03 Stuart J. Lind Stone retriever for flexible endoscopes having small diameter working channels
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US20220061864A1 (en) * 2018-12-27 2022-03-03 C. R. Bard, Inc. Extraction basket
US11723802B2 (en) 2016-01-30 2023-08-15 Carl Zeiss Meditec Cataract Technology Inc. Devices and methods for ocular surgery
US11723803B2 (en) * 2014-09-17 2023-08-15 Carl Zeiss Meditec Cataract Technology Inc. Devices and methods for the removal of lenticular tissue
US11813142B2 (en) * 2014-09-17 2023-11-14 Carl Zeiss Meditec Cataract Technology Inc. Devices and methods for cutting lenticular tissue
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US4181131A (en) * 1977-02-28 1980-01-01 Olympus Optical Co., Ltd. High frequency electrosurgical instrument for cutting human body cavity structures
US4325374A (en) * 1979-06-04 1982-04-20 Olympus Optical Co., Ltd. High frequency electrosurgical instrument for an endoscope
EP0041719A1 (en) * 1980-06-10 1981-12-16 Olympus Optical Co., Ltd. Endoscope type high frequency surgical apparatus
EP0056235A2 (en) * 1981-01-14 1982-07-21 Olympus Optical Co., Ltd. Endoscopic photographing apparatus
EP0056235A3 (en) * 1981-01-14 1982-09-29 Olympus Optical Co., Ltd. Endoscopic photographing apparatus
US4487489A (en) * 1981-01-14 1984-12-11 Olympus Optical Co., Ltd. Endoscopic photographing apparatus
US4493320A (en) * 1982-04-02 1985-01-15 Treat Michael R Bipolar electrocautery surgical snare
EP0123175A1 (en) * 1983-04-16 1984-10-31 Knut Dr. Korth Catheter for removing calculus from the kidneys or urethra
EP0156202A1 (en) * 1984-03-06 1985-10-02 PONOMAR SULEPOV, Eugenio Surgical instrument for transjugular venous thromboectomy
US4711238A (en) * 1985-03-14 1987-12-08 Cunningham Frank W Meniscal cutting device
US4718419A (en) * 1985-08-05 1988-01-12 Olympus Optical Co., Ltd. Snare assembly for endoscope
US4819633A (en) * 1986-09-02 1989-04-11 Richard Wolf Gmbh Coagulation forceps
US5113846A (en) * 1990-07-03 1992-05-19 Richard Wolf Gmbh Organ manipulator
US5163942A (en) * 1991-12-09 1992-11-17 Everest Medical Corporation Surgical instrument with grasping loop for laparoscopic procedures
US5190554A (en) * 1992-04-08 1993-03-02 Eastern Virginia Medical School Appendix extractor
US5423795A (en) * 1993-03-08 1995-06-13 Richard Wolf Gmbh Resectoscope
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US5417684A (en) * 1993-03-11 1995-05-23 Wilson Greatbatch Ltd. Laparoscopic surgical grasper with a loop with gripping formations
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US5810744A (en) * 1993-05-17 1998-09-22 Boston Scientific Corporation Instrument for collecting multiple biopsy specimens
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US5471992A (en) * 1994-02-08 1995-12-05 Boston Scientific Corporation Multi-motion cutter multiple biopsy sampling device
US5871453A (en) * 1994-02-08 1999-02-16 Boston Scientific Corporation Moveable sample tube multiple biopsy sampling device
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US6053877A (en) * 1994-02-08 2000-04-25 Boston Scientific Corporation Movable sample tube multiple biopsy sampling device
US5961534A (en) * 1994-02-08 1999-10-05 Boston Scientific Corporation Multi-motion side cutting biopsy sampling device
US5860987A (en) * 1994-10-04 1999-01-19 United States Surgical Corporation Surgical retractor
US5573530A (en) * 1994-12-15 1996-11-12 Cabot Technology Corporation Handle for a surgical instrument including a manually actuated brake
US5782839A (en) * 1995-03-10 1998-07-21 Wilson Greatbatch Ltd. Laparoscopic surgical grasper having a detachable strap
US5613973A (en) * 1995-03-10 1997-03-25 Wilson Greatbatch Ltd. Laraposcopic surgical grasper having an attachable strap
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