JP2012196386A - Forceps for endoscopic surgical operation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a forceps for endoscopic surgical operation capable of surely moving an organ.SOLUTION: The forceps 10 for endoscopic surgical operation includes a tube 12, two or more linear members 16-20 which can be stored in the hollow part 14 of the tube 12, and an operation part 22 mounted to the proximal ends of respective linear members 16-20. In this case, bending parts 32, 34 are respectively formed on the distal end sides of respective linear members 16-20 (distal ends 26-30 sides). Also, when the distal end sides of respective linear members 16-20 protrude outward from the tube 12 by the operation of the operation part 22 by an operator, respective bending parts 32, 34 bend so that the distal end sides of respective linear members 16-20 incline toward one direction.

Description

  The present invention relates to an endoscopic surgical forceps that is inserted into a living body and moves an organ during surgery on a living body such as a human body.

  For example, in laparoscopic surgery (endoscopic surgery), a doctor (operator) can make a small hole in the patient's abdomen and insert an endoscope through a trocar placed in the hole. ) Can be operated while viewing the endoscope image on the monitor. In this case, the operator inserts endoscopic surgical forceps (hereinafter, also referred to as forceps) such as a manipulator or forceps through the trocar and operates the medical device to perform endoscopic surgery. It is possible to move an organ to be observed to a place where it is easy to observe, or to move an organ that hinders observation to the side.

  As this type of forceps, Patent Document 1 discloses that a shaft member in a hollow sheath protrudes outside to expand a pair of plate-like organ holding portions, and a tip of the pair of organ holding portions and a shaft member. An observation auxiliary forceps that moves the organ to a desired position by bringing the tip into contact with the organ is disclosed. Further, in Patent Document 2, a plurality of plate-shaped exclusion members are protruded from a hollow sheath and expanded in a fan shape, and an endoscopic surgical retraction element in which an organ is moved by each of the expansion members expanded in a fan shape. Is disclosed.

JP-A-5-253237 Japanese Patent Laid-Open No. 9-75360

  However, the forceps disclosed in Patent Documents 1 and 2 simply move the organ in a state where a plurality of spread plate-like members are in contact with the organ, so that depending on the contact state with respect to the organ, May not be able to move.

  The present invention has been made in consideration of the above problems, and an object of the present invention is to provide an endoscopic surgical forceps that can reliably move an organ.

In order to achieve the above object, an endoscopic surgical forceps according to the present invention includes:
A tubular body, at least two linear members that can be accommodated in the hollow portion of the tubular body, and an operation unit attached to the base end of each linear member,
Each linear member is formed with at least one bent part,
When each linear member protrudes from the tubular body to the outside by the operation portion, each linear member is inclined in one direction by bending at the bent portion.

  According to this configuration, when each linear member protrudes outside from the tubular body, each linear member is inclined toward the one direction due to the bending of each bent portion. By hooking and supporting (holding) an organ with a member, the organ can be reliably moved.

  In addition, since each of the linear members protrudes outward from the tubular body by the operation unit, an operator operates the operation unit according to the shape, size, weight, or softness of the organ, so that the tube It is also possible to appropriately adjust the protruding amount of each linear member from the body.

  In this case, each of the linear members is formed with two or more bent portions, and when the linear members protrude outward from the tubular body, the bent portions are respectively obtuse in the one direction. It is desirable to bend.

  As a result, each of the linear members protruding outward from the tubular body has a shape that envelops the organ, and thus can be moved in a state of enveloping (grabbing) the organ. . In addition, since each linear member is likely to have a shape that wraps around the organ as the number of the bent portions increases, the number of the bent portions may be appropriately set according to the shape and size of the organ to be moved. That's fine.

  In addition, each of the linear members is made of a metal wire in which the bent portion is bent in advance in the one direction, and is accommodated in the hollow portion in a substantially linear shape by an elastic force at the bent portion.

  Thereby, each said linear member can be easily accommodated in the hollow part of a substantially cylindrical tubular body by the said elastic force. Further, when the linear members protrude from the tubular body to the outside, the linear members can be easily inclined in the one direction by bending at the bent portion. Furthermore, since the said linear member which has the said bending part is comprised only by bending the said metal wire which consists of stainless steel etc. beforehand, it becomes possible to manufacture the said medical device easily.

  Moreover, when each said linear member protrudes outside from the said tubular body, it is desirable for each said linear member to expand in a comb-tooth shape by planar view.

  Thereby, for example, even when the medical device includes three or more linear members, it is possible to expand each linear member in a rake shape at regular intervals in a plan view. Can support organs in a well-balanced manner. Further, as the number of the linear members increases, each linear member becomes easier to hold an elongated organ or a meandering organ (for example, intestinal tract), so that the linear shape depends on the shape or size of the organ. You may set the number of members suitably.

  Further, the tip of each linear member may be formed in a ring shape, a spherical shape, or a saddle shape according to the organ to be moved.

  In this case, if the tip of the linear member is formed in a ring shape, the ring-like tip enters the gap of the groove-like portion with respect to an organ having a groove-like portion such as the intestinal tract. Thus, the organ can be moved. In addition, for an organ having a mesh portion such as the large retina or the intestinal tract, the organ can be moved in a state where the mesh portion is hooked on the ring portion. Furthermore, since the tip portion has a ring shape, these organs can be moved without being damaged.

  If the tip of the linear member is formed in a spherical shape, it can be moved to a relatively soft and large-sized organ (an organ not protected by muscle layers) such as the liver without damaging the organ. Can do.

  If the distal end portion of the linear member is formed in a bowl shape, there is a groove-like portion such as an intestinal tract, and the hook-like tip portion is located in the gap of the groove-like portion with respect to a relatively strong organ. The organ can be moved in the state of entering.

  Further, when the linear members protrude outward from the tubular body, if the bent portion bends in a round shape, the individual wires are moved when moving an approximately spherical or substantially cylindrical organ (for example, an intestinal tract). It is possible to move the member in a state where the organ is supported along the surface of the organ.

  Furthermore, if two or more linear members are used as at least one set and the tip portions of the set of linear members are connected to form a diamond-shaped frame, the organs on the tip side of each of the linear members Therefore, it is possible to easily move an organ having a large shape or an organ having a large weight.

  Furthermore, a membrane member or bag body that can be connected to each linear member and can be folded may be attached to the distal end side of each linear member.

  In this case, when each said linear member is accommodated in the said hollow part, the said film-shaped member or the said bag body is accommodated in the folded state. Further, when the distal end side of each linear member protrudes from the tube body, the membrane member or the bag body changes from a folded state to an expanded state or an expanded state. Thereby, reticulated organs such as the large retina and intestinal tract can be reliably captured and moved by the membranous member or the bag.

  Moreover, you may set the attachment position to the said operation part in each said linear member according to the organ of movement object.

  Thereby, when the operator operates the operation portion and the linear members protrude from the tubular body, the degree of bending of the protruding linear members can be adjusted. The organ can be appropriately held according to the shape, size, weight or softness.

  According to the present invention, when each linear member protrudes from the tubular body to the outside, each linear member is inclined in one direction due to the bending of each bent portion. By hooking and supporting (holding), the organ can be reliably moved.

  Moreover, since each said linear member protrudes outside from the said tubular body by the operation part, when the operator operates the said operation part according to the shape, size, weight, or softness of an organ, the said tubular body It is also possible to adjust the protruding amount of each linear member from the above as appropriate.

FIG. 1A is a perspective view of an endoscopic surgical forceps according to an embodiment of the present invention, and FIG. 1B is a plan view of the endoscopic surgical forceps in a state where a tubular body is broken. FIG. 1C is a plan view of the tip side of the linear member. FIG. 2A is a perspective view showing a state in which the distal end side of the linear member protrudes from the tube, and FIG. 2B is a plan view of the endoscopic surgical forceps in a state where the tube is broken. It is explanatory drawing which shows the angle of the bending part and front-end | tip part of the linear member which protruded from the tubular body. 4A is a perspective view showing a state in which the distal end side of the linear member protrudes from the tubular body, and FIG. 4B is a plan view of the distal end side of the linear member of FIG. 4A. FIG. 5A is a perspective view showing a state in which the distal end side of the linear member protrudes from the tubular body, and FIG. 5B is a side view of the distal end side of the linear member of FIG. 5A. 6A to 6C are partial perspective views showing a state in which the distal end side of the linear member protrudes from the tubular body. 7A and 7B are partial perspective views showing a state in which the distal end side of the linear member protrudes from the tubular body. 8A to 8C are partial perspective views showing a state in which the distal end side of the linear member protrudes from the tubular body. 9A and 9B are perspective views illustrating the attachment position of the linear member to the operation unit.

  Hereinafter, preferred embodiments of the endoscopic surgical forceps according to the present invention will be described with reference to the accompanying drawings.

  As shown in FIGS. 1A to 3, an endoscopic surgical forceps 10 (hereinafter also referred to as forceps 10) according to this embodiment is a doctor (surgical operation) in laparoscopic surgery (endoscopic surgery) or the like. A manipulator (or forceps) used by a person), a substantially cylindrical tubular body 12 as a hollow sheath, three linear members 16 to 20 that can be accommodated in the hollow portion 14 of the tubular body 12, It is comprised from the operation part 22 which crimps and fixes the base end part of the three linear members 16-20. Note that the forceps 10 is actually a relatively elongated manipulator, but in FIGS. 1A to 3, in order to facilitate understanding of the forceps 10, a part is exaggerated and the same applies hereinafter. .

  Since the tubular body 12 and the linear members 16 to 20 are inserted into a patient's abdomen via a trocar (trocar) (not shown), it is preferable that the tubular body 12 and the linear members 16 to 20 are made of stainless steel such as SUS304 or SUS316L, titanium, or Ni—Ti alloy. . The operation unit 22 is also preferably made of stainless steel such as SUS304 or SUS316L, titanium, or a Ni—Ti alloy as a whole, but the portions on the linear members 16 to 20 side of the operation unit 22 are formed from the linear members 16 to 16. Since it is necessary to fix in the state which crimped 20 base end parts, it is desirable to comprise with resin etc. That is, the linear members 16 to 20 side of the operation unit 22 are formed by caulking the base end portions of the linear members 16 to 20 and then pouring and solidifying a resin-based adhesive or the like. The operation portion 22 is a columnar member that can slide in the hollow portion 14 along the axial direction of the tube body 12, and is operated by an operator at a proximal end portion that is separated from the tube body 12. The handle 24 is provided.

  As illustrated in FIG. 1B, the linear members 16 to 20 are accommodated in a substantially linear shape within the hollow portion 14. Moreover, as shown to FIG. 1B and FIG. 1C, the front-end | tip parts 26-30 of each linear member 16-20 are formed in the ring shape. Further, two bent portions 32 and 34 that are bent in advance before being accommodated in the hollow portion 14 are formed on the end portions 26 to 30 of the linear members 16 to 20, respectively.

  Here, at the time of surgery, the operator inserts the tube 12 side of the forceps 10 of FIG. 1A into the abdomen via the trocar, and then operates the handle 24 to move the operation unit 22 to the tube 12 side. Then, as shown in FIGS. 2A and 2B, the operation portion 22 slides in the hollow portion 14 from the right side to the left side (from the proximal end side to the distal end side of the tube body 12) in FIG. The distal end sides (the distal end portions 26 to 30 side) of the members 16 to 20 protrude outward from the hollow portion 14 of the tube body 12.

  As described above, since the bent portions 32 and 34 of the linear members 16 to 20 are bent in advance before being accommodated in the hollow portion 14, the distal end side of the linear members 16 to 20 is the hollow portion 14 of the tubular body 12. When protruding from the outside, the tip end side is inclined in one direction (downward in FIG. 2A) due to the bending of the bent portions 32 and 34. In this case, in the plan view of FIG. 2B, the distal ends of the linear members 16 to 20 are expanded at equal intervals and in a rake shape (comb shape) by bending of the bent portions 32 and 34.

  Further, in the side view of FIG. 3, when the tubular body 12 is disposed substantially parallel to the reference surface 36, the angle A formed by the reference surface 36 and the linear members 16 to 20, and the linear members 16. The angle B formed by the bent portion 34 and the angle C formed by the bent portion 32 are ranges of obtuse angles of A = 45 ° to 180 °, B = 45 ° to 179 °, and C = 90 ° to 179 °, respectively. It is desirable that More preferably, A = 90 ° to 180 °, B = 70 ° to 125 °, C = 110 ° to 165 °, and more preferably A = 130 ° to 140 °, B = 85 ° to 95 °, C = It may be 125 ° to 145 °. Accordingly, the bent portions 32 and 34 are in the angular range described above, and the linear members 16 to 20 are expanded (expanded) as shown in FIGS. 2A and 2B. It is bent in advance.

  Thus, when the tip portions 26 to 30 of the linear members 16 to 20 are formed in a ring shape, and the tip side of each of the linear members 16 to 20 protrudes outward from the tube body 12, the tip portions 26 to 30 are inclined downward. When moving an organ having a groove-like portion such as an intestinal tract, the tip portion 26-30 is inserted into the gap of the groove-like portion, and the whole organ is wrapped around the tip side of each linear member 16-20. If it is hooked and held, the organ can be moved while being securely grasped. On the other hand, when moving an organ having a net-like part such as the large retina or mesentery, if the net-like part is hooked on the tip part 26-30 and the whole organ is hooked and held so as to be wrapped at the tip side, The organ can be moved while being securely grasped. In addition, since the front-end | tip parts 26-30 are ring-shaped, it can be moved without injuring an organ.

  On the other hand, when the distal end side of each of the linear members 16 to 20 is deployed as shown in FIGS. 2A and 2B, the operator 24 moves away from the tube body 12 (from the left side to the right side in FIG. 2B). Since the operation part 22 also slides in the direction away from the tubular body 12, the linear members 16 to 20 can be accommodated in the hollow part 14 as shown in FIG. 1B. In that case, each linear member 16-20 is accommodated in the hollow part 14 in the substantially linear form by the elastic force of the bending parts 32 and 34. As shown in FIG.

  As described above, according to the forceps 10 according to the present embodiment, each linear member 16 is bent by the bent portions 32 and 34 when the distal ends of the linear members 16 to 20 protrude from the tubular body 12 to the outside. Since the distal end side of ˜20 is inclined in one direction, it is possible to reliably move the organ by hooking and supporting (holding) the organ on the distal end side of each inclined linear member 16-20. Become.

  In addition, since the distal end side of each of the linear members 16 to 20 protrudes outward from the tubular body 12 by the operation section 22 moving to the distal end side of the tubular body 12, the operator operates the handle 24 of the operational section 22. Depending on the shape, size, weight, or softness of the organ, it is possible to appropriately adjust the amount of protrusion on the distal end side of each of the linear members 16 to 20 with respect to the tubular body 12.

  In addition, the bent portions 32 and 34 are bent at obtuse angles B and C, respectively, in one direction when the distal ends of the linear members 16 to 20 protrude from the tube body 12 to the outside, and the reference surface 36 Since the distal end portions 26 to 30 form an obtuse angle A, the distal end side protruding outward from the tube body 12 has a shape that envelops the organ as a whole, and as a result, envelops the organ. It can be moved in the (gripped) state.

  Furthermore, the linear members 16 to 20 can be easily accommodated in the hollow portion 14 of the substantially cylindrical tubular body 12 by the elastic force at the bent portions 32 and 34. Moreover, when the front end side of each linear member 16-20 protrudes outside from the tubular body 12, the front end side of each linear member 16-20 is easily inclined in one direction by bending at the bent portions 32, 34. Can be made. Furthermore, since the linear members 16 to 20 having the bent portions 32 and 34 are configured simply by bending a metal wire such as SUS304, SUS316L, titanium, or Ni—Ti alloy in advance, the forceps 10 is easily manufactured. It becomes possible.

  Furthermore, since the tip side of each linear member 16-20 expands in a comb shape in a plan view of FIG. 2B, each linear member 16-20 can be expanded in a rake shape at equal intervals in a plan view. Thus, the organ can be supported in a well-balanced manner.

  Further, if the distal end portions 26 to 30 of the linear members 16 to 20 are formed in a ring shape, the ring-shaped distal end portion 26 is interposed in the gap of the groove-shaped portion with respect to an organ having a groove-shaped portion such as the intestinal tract. The organ can be moved in a state where ˜30 enters. In addition, for an organ having a mesh portion such as the large retina or the intestinal tract, the organ can be moved in a state where the mesh portion is hooked on the ring portion. Furthermore, since the tip portions 26 to 30 are ring-shaped, they can be moved without damaging these organs.

  The forceps 10 according to the present embodiment is not limited to the above description, and the shape of the tip portions 26 to 30, the number of linear members 16 to 20, and the bent portions 32 and 34 are as follows. Various organs can be moved by devising the shape and the attachment position of the linear members 16 to 20 to the operation unit 22.

  Next, a modified example of the forceps 10 according to the present embodiment with such a device will be described with reference to FIGS. 4A to 9B. In the following description, the same components as those described in FIGS. 1A to 3 are denoted by the same reference numerals, and detailed description thereof is omitted.

  4A and 4B differ from the cases of FIGS. 1A to 3 in that the tip portions 26 to 30 are formed in a spherical shape. In this case, since the tip portions 26 to 30 are spherical, the organ can be moved without damaging the relatively soft and large organ (an organ not protected by the muscle layer) such as the liver. .

  5A and 5B differ from the case of FIGS. 1A to 4B in that the tip portions 26 to 30 are formed in a bowl shape. In this case, since the tip portions 26 to 30 are bowl-shaped, there are groove-like portions such as the intestinal tract and the relatively strong organ has the bowl-like tip portions 26 to 30 in the gap between the groove-like portions. The organ can be moved in the state of entering.

  FIG. 6A illustrates a case where the bent portions 32 and 34 are greatly bent in a round shape. If the bent portions 32 and 34 are largely bent in a round shape, when moving a relatively large substantially circular or substantially cylindrical organ, the distal ends of the linear members 16 to 20 are moved along the surface of the organ. It is possible to move the organ while supporting it.

  FIG. 6B illustrates a case where three bent portions 32, 34, and 38 are formed on the distal end side of the linear members 16 to 20. Even when three bent portions 32, 34, 38 are provided, the tip side of each linear member 16-20 that protrudes outside from the tube body 12 has a shape that envelops the organ as a whole. It is possible to move the body while holding the organ. Note that, as the number of the bent portions 32, 34, and 38 is increased, the shape of the organ is more likely to be wrapped. Therefore, in the present embodiment, the bent portions 32, 34, and 38 are changed according to the shape and size of the organ to be moved. May be set as appropriate.

  FIG. 6C shows a case where three bent portions 32, 34, 38 are formed on the distal end side of the linear members 16-20, and each bent portion 32, 34, 38 is bent in a round shape. It is what. In this case, since there are many bent portions 32, 34, and 38 and each bent portion 32, 34, and 38 is bent in a round shape, the distal end side becomes a U-shape that is easy to envelop the organ as a whole, It is suitable for movement of a relatively flat organ (for example, liver) or an elongated tubular organ (for example, intestinal tract).

  FIG. 7A includes four linear members 16 to 20 and 40, and the distal ends (the distal ends 26 to 30 and 42) of the linear members 16 to 20 and 40 protrude from the hollow portion 14 of the tubular body 12. This is illustrated in the figure. By increasing the number of the linear members 16 to 20 and 40, it is possible to move the organ while securely grasping it.

  As the number of the linear members 16 to 20 and 40 increases, it becomes easier to hold an elongated organ or a meandering organ (for example, an intestinal tract) on the distal end side of each of the linear members 16 to 20 and 40. Then, the number of the linear members 16 to 20 and 40 may be appropriately set according to the shape or size of the organ.

  FIG. 7B includes four linear members 16 to 20 and 40, and the two linear members 16 and 18 are set as one set, and the two linear members 20 and 40 are set as the other set. By connecting the tip portions 26, 28 of one set of linear members 16, 18, a rhombus-shaped frame 44 is formed by the linear members 16, 18, while the other set of linear members 20, The case where the rhombus-shaped frame 46 is formed by the linear members 20 and 40 by connecting the front end portions 30 and 42 of the 40 is illustrated. By forming the respective frames 44 and 46 in this way, the organ holding force on the tip side of each of the linear members 16 to 20 and 40 is improved, so that a large-shaped organ or a heavy-weight organ can be easily moved. Can do.

  FIG. 8A illustrates a case where a membrane member 48 that connects the front end portions 26 to 30 and can be folded is attached to the front end sides of the linear members 16 to 20. The film-like member 48 is a film-like object made of a stretchable elastic material such as rubber. In this case, when each linear member 16-20 is accommodated in the hollow portion 14, the membrane member 48 is also accommodated in a folded state, while the distal end side of each linear member 16-20 is hollow in the tubular body 12. When protruding from the portion 14 to the outside, the membrane member 48 changes from the folded state to the unfolded state of FIG. 8A. By deploying in this way, a reticulated organ such as the large retina or intestinal tract can be reliably captured and moved by the membrane member 48.

  FIG. 8B illustrates a case where a bellows-like film-like member 50 is mounted on the tip side of each of the linear members 16 to 20 instead of the film-like member 48 of FIG. 8A. Even in this case, when each linear member 16-20 is accommodated in the hollow portion 14, the membrane member 50 is also accommodated in a folded state, and the distal end side of each linear member 16-20 is the hollow portion 14 of the tubular body 12. When protruding from the outside to the outside, the membrane member 50 changes from the folded state to the unfolded state of FIG. 8B. Even in this case, the same effect as in FIG. 8A can be obtained.

  FIG. 8C shows a case where a bellows-like bag body 52 is mounted instead of the film-like members 48 and 50 of FIGS. 8A and 8C. The bag body 52 is connected to a hose 54 that passes through the hollow portion 14 of the tube body 12. In this case, when each linear member 16-20 is accommodated in the hollow portion 14, the membrane member 50 is also accommodated in a folded state, while the distal end side of each linear member 16-20 is hollow in the tubular body 12. When protruding from the portion 14 to the outside, the bag body 52 is filled with gas or liquid from the handle 24 side via the hose 54, so that the bag body 52 is expanded from the folded state in FIG. 8C. To change. Even in this case, the same effect as in FIGS. 8A and 8B can be obtained.

  9A and 9B illustrate the attachment positions of the linear members 16 to 20 to the operation unit 22.

  In the case of FIG. 9A, when the front end side of each linear member 16-20 protrudes outside from the tubular body 12, each linear member 16- is arranged on the distal end side of the tubular body 12 (the distal end side of each linear member 16-20). The attachment position with respect to the operation part 22 of 20 base end parts is set. In this case, since there are few play parts of each linear member 16-20 in the hollow part 14, the front end side of each linear member 16-20 becomes difficult to bend, As a result, an organ is hold | maintained in a state with high rigidity. can do. In particular, the configuration of FIG. 9A is suitable when moving a relatively mobile organ such as the intestine.

  In the case of FIG. 9B, when the distal end side of each linear member 16-20 protrudes outside from the tube body 12, each linear member 16- to the operation part 22 on the base end side (the handle 24 side) of the tube body 12. The attachment position of 20 base end parts is set. In this case, since there are many play parts of each linear member 16-20 in the hollow part 14, while the front end side of each linear member 16-20 becomes easy to bend, according to the magnitude | size of the organ of movement object, this front end The extent to which the portions 26 to 30 are spread can be adjusted. Therefore, the configuration shown in FIG. 9B is preferable when moving a relatively soft organ such as the liver, or a relatively large and substantially spherical organ such as the bladder or uterus.

  Thus, in the case of FIG. 9A and FIG. 9B, when the operator operates the handle 24 and the distal end side of each linear member 16-20 protrudes from the tubular body 12, the protruding linear members 16-20 Since the degree of bending on the distal end side can be adjusted, the organ can be appropriately held according to the shape, size, weight or softness of the organ.

  The present invention is not limited to the above-described embodiment, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 10 ... Endoscopic forceps (forceps) 12 ... Tube 14 ... Hollow part 16-20, 40 ... Linear member 22 ... Operation part 24 ... Handle 26-30, 42 ... Tip part 32, 34, 38 ... Bent part 36 ... Reference plane 44, 46 ... Frame 48, 50 ... Membrane member 52 ... Bag 54 ... Hose

Claims (9)

Tube,
At least two linear members that can be accommodated in the hollow portion of the tubular body;
An operation unit attached to the base end of each linear member;
With
Each linear member is formed with at least one bent part,
An endoscope in which each of the linear members is inclined in one direction due to bending at the bent portion when the linear members protrude from the tubular body to the outside by the operation unit. Lower surgical forceps. The endoscopic surgical forceps according to claim 1,
Each linear member is formed with two or more bent portions,
Endoscopic surgical forceps, wherein each of the bent portions is bent at an obtuse angle toward the one direction when each of the linear members protrudes from the tube body. The endoscopic surgical forceps according to claim 1 or 2,
Each of the linear members includes a metal wire in which the bent portion is bent in advance in the one direction, and is accommodated in the hollow portion in a substantially linear shape by an elastic force in the bent portion. Endoscopic surgical forceps. In the endoscopic surgical forceps according to any one of claims 1 to 3,
Endoscopic surgical forceps, wherein each linear member expands in a comb-teeth shape in a plan view when each linear member protrudes from the tubular body. In the endoscopic surgical forceps according to any one of claims 1 to 4,
Endoscopic surgical forceps, wherein the distal end portion of each linear member is formed in a ring shape, a spherical shape, or a hook shape. In the endoscopic surgical forceps according to any one of claims 1 to 5,
An endoscopic surgical forceps characterized in that, when each of the linear members protrudes outward from the tubular body, the bent portion is bent in a round shape. In the endoscopic surgical forceps according to any one of claims 1 to 6,
Endoscopic surgical forceps characterized in that a rhombus-shaped frame is formed by connecting two or more linear members as at least one group and connecting the tips of the linear members of the group. . In the endoscopic surgical forceps according to any one of claims 1 to 7,
Endoscopic surgical forceps, characterized in that a membrane-like member or bag that connects and folds each linear member is attached to the distal end side of each linear member. In the endoscopic surgical forceps according to any one of claims 1 to 8,
An endoscopic surgical forceps, wherein an attachment position of each linear member to the operation portion is set according to an organ moved by the linear member protruding from the tubular body.

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