JPH0889509A - End tractor and its introducing forceps and needle clamper - Google Patents

Abstract

PURPOSE: To obtain an end tractor which moves in the organs, lesion, etc., in an operation under an endoscope, etc., by fitting either of a rigid rod or flexible member to the other, making this rigid rod movable along the longitudinal direction of the flexible member and providing this end tractor with a coupling means for removably coupling both. CONSTITUTION: Clamping forceps 16 are introduced via a pipe 40 for introduction into the celom and after the desired organs are clamped, a straight needle 18 is set into a clamping part 48 of a needle clamper 26 and is introduced into the celom via a pipe 40 in an operation under an endoscope. The straight needle 18 is drawn outside the celom via the desired position of the celom wall and is removed from the needle supporting part 48. The rigid rod is then introduced via an aperture formed by cutting a flexible pipe 14 near the straight needle 18 and the front end thereof is fitted into the hole of the clamping forceps 16. As a result, the organs clamped by the clamping pincers 16 are pressed when, for example, the rigid rod and the flexible pipe 14 are pushed from outside the celom. The organs are pulled when both are pulled. The movement of the organs to the desired position is thus made possible.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an end tractor used in endoscopic surgery, laparoscopic surgery and the like, and an introduction forceps and a needle gripping tool for the end tractor.

[0002]

2. Description of the Related Art For example, endoscopic surgery has been widely used because it has advantages such as smaller surgical wound and less burden on the patient as compared with normal open surgery.

On the other hand, when moving an organ or the like (for example, when moving an organ that obstructs the visual field, when grasping and moving a part of the affected part to excise the affected part), conventional laparotomy is used. It is possible to easily move desired organs, affected parts and the like by using conventional forceps. However, for example, in endoscopic surgery, since a slight opening is formed in the wall of the body cavity, conventional forceps cannot be used, and an organ, an affected area, or the like can be easily moved. I can't.

Therefore, an object of the present invention is to provide an end tractor for moving an organ, an affected part or the like in endoscopic surgery or the like.

A further object of the present invention is to provide an end tractor which can move an organ, an affected area or the like from outside the body cavity by forming a slight opening in the wall of the body cavity. Further, it is an object of the present invention to provide an introduction forceps for the end tractor.

A further object of the present invention is to provide a needle gripper for the above-mentioned end tractor.

[0007]

According to the present invention, an object as described above includes an elongated flexible member, a grip member connected to one end of the flexible member, and a rigid rod. One of the rigid rod and the flexible member is fitted to the other, and the rigid rod is movable along the longitudinal direction of the flexible member,
A solution is provided by providing an end tractor characterized in that the gripping member and the rigid rod are provided with coupling means for releasably coupling them.

Further, according to the present invention, an object as described above is provided with an elongated flexible member, a gripping member connected to one end of the flexible member, and a rigid rod. One of the rod and the flexible member is fitted to the other so that the rigid rod can move along the longitudinal direction of the flexible member, and the gripping member and the rigid rod can detach them. In the introduction forceps for introducing the grasping member of the end tractor having the coupling means for coupling into the body cavity, the main body, the handle rotatably installed in the main body, and the one end of the main body are provided. A gripper and a connecting member that connects the handle and the gripper are provided, and the connecting member is moved by the pivotal movement of the handle, whereby the connecting member is moved.
The solution is to provide an introduction forceps characterized in that the gripper can be opened and closed.

Further, according to the present invention, the problems as described above are provided in an elongated flexible member, a gripping member connected to one end of the flexible member, and the other end of the flexible member. A straight needle and a rigid rod, wherein one of the rigid rod and the flexible member is fitted into the other, and the rigid rod is movable along the longitudinal direction of the flexible member. A needle grip for introducing the straight needle of the end tractor into the body cavity and piercing the straight needle from the body cavity into the body cavity wall, wherein the grasping member and the rigid rod have a coupling means for detachably coupling them The tool includes a main body, a manually operable grip, a needle support portion that supports the straight needle, and a connecting member that connects the grip and the needle support portion. A closed position in which a straight needle directed toward and supported by the grip side is positioned substantially parallel to the main body, The needle support is installed on the main body so that the needle support can be pivoted between the closed position and the open position having a predetermined angle, and the connection member is moved by the operation of the grip. Is solved by providing a needle gripper characterized in that the needle support is pivoted between the closed position and the open position.

[0010]

1 to 12, an end tractor according to a preferred embodiment of the present invention and a method of using the same will be described.

This end tractor comprises an end tractor body 10 as shown in FIG. 1 and a rigid rod 12 made of metal, hard plastic or the like as shown in FIG.

The end tractor body 10 comprises a flexible tube 14 made of vinyl which constitutes an elongated flexible member, and grasping forceps 16 which is connected to one end of the flexible tube 14 and constitutes a grasping member. To do. The flexible tube 14 is not limited to vinyl and can be formed of various materials, for example, other plastic materials. A straight needle 18 is provided at the other end of the flexible tube 14. The flexible tube 14 has an inner diameter slightly larger than the outer diameter of the rigid rod 12. Therefore, the rigid rod 12
Can be inserted into the flexible tube 14. The grasping forceps 16 has a hole 23 into which the tip of the rigid rod 12 fits and a grasping portion 23 which is forced to be closed by a spring 22.
Have.

The flexible tube 14 has, for example, a circular cross-section on the outer and inner surfaces, an outer diameter of 2.0 to 5.0 mm, an inner diameter of 1.8 to 4.8 mm, and a length. , 10
It is 50 cm. The straight needle 18 has, for example, a circular cross-sectional shape in which the outer diameter is approximately equal to the outer diameter of the flexible tube 14 and is 2.0 to 5.0 mm, and the length is 3 to 10 cm.

As described in detail below, the grasping forceps 16 is
The straight needle 18 is introduced into the body cavity by the introduction forceps 24 (FIG. 3), is introduced into the body cavity by the needle grasping tool 26 (FIGS. 4 and 5), and is pulled out from a desired portion of the body cavity wall.

As shown in FIG. 3, the introduction forceps 24 is
A main body 28, a handle 30 pivotably connected to the main body 28, a rotor 32 installed so as to be rotatable about a longitudinal center axis of the main body 28, and a connecting member arranged in the main body 28. And a gripper 36 provided at the tip of the main body 28.

When the handle 30 is closed, the gripper 36 is configured to be closed. Further rotation of the rotor 32 causes the connecting rod 34 to rotate about its longitudinal central axis, which in turn causes the gripper 36 to rotate. As described below, the handle 30 is closed, the rear part 38 (FIG. 1) of the grasping forceps 16 is grasped by the gripper 36, and the grasping forceps 16 is opened and introduced into the body cavity through the pipe 40 (FIG. 7). The handle 30 is opened, and the grasping forceps 16 grasps an organ, for example. The structure of the introduction forceps 24 will be described later in detail with reference to FIGS. 13 and 14.

As shown in FIGS. 4 to 6, the needle grip 2
Reference numeral 6 denotes a hollow rod 42 that is a main body, a rigid rod 44 that forms a connecting member that extends into the hollow rod 42, a grip 46 that is installed at one end of the hollow rod 42, and a swivel at the other end of the hollow rod 42. And a needle support portion 48 that is installed as much as possible. By pulling the grip 46 by hand and moving it from the pushed position (Fig. 4) to the pulled position (Fig. 5), the rigid rod 44 is moved longitudinally within the hollow rod 42,
The needle support 48 is pivoted from the closed position shown in FIG. 4 to the open position shown in FIG. In the illustrated embodiment, in the most open position, the needle support 48 forms an angle of about 120 ° with the hollow rod 42. Instead, in the most open position, 9
It can also be configured to form an angle of 0 ° or 180 °.

As shown in FIG. 6, for example, the needle support portion 48 includes a hard first support 47 made of, for example, a hard plastic material and a soft support made of a soft plastic material such as silicon or vinyl chloride. Second
And the supports 49, 49 of. Second support 49, 4
9 is located on both sides of the first support 47, and as shown in FIG. 6, a slit is formed between the second supports 49, 49. Therefore, the 1st support part 47 and the 2nd support parts 49 and 49 form the substantially cylindrical member which has a slit. The straight needle 18 is arranged in this substantially cylindrical member,
The straight needle 18 can be supported in this position. Then, the straight needle 18 can be detached from the substantially cylindrical member by pulling in the longitudinal direction or the radial direction of the substantially cylindrical member.

Instead of the substantially cylindrical member as described above, 1
Using a relatively hard support having a substantially C-shaped cross section of 80 ° or less, a straight needle is fixed to this support with a thread that is relatively easy to break, and the straight needle is pulled to break and cut the thread. Alternatively, the straight needle can be removed.

In the above embodiment of the needle gripper 26, pulling the gripper 46 causes the needle support 48 to pivot from a closed position to an open position, but instead of this, the gripper 46 is moved to the first position. Between the rotational position and the second rotational position, the rigid rod 44 is rotatably installed about the longitudinal center axis of the rigid rod 44, and the rigid rod 44 is moved along the longitudinal central axis of the gripper 36 according to the rotational movement of the gripper 36. It can also be configured to move.

Next, a method of using the end tractor will be described with reference to FIGS. 7 to 12. These operations are
For example, it is performed under visual observation using an endoscope introduced into a body cavity from a pipe (not shown).

First, for example, a pipe 40 for introducing into a body cavity is provided as is conventionally performed in endoscopic surgery. The pipe 40 has, for example, an outer diameter of 5 to 15 mm and an inner diameter of 4 to 10 mm. Then, with the gripper 36 of the introduction forceps 24, the rear portion 38 of the grasping forceps 16 (FIG. 1)
7 is grasped, and the grasping forceps 16 is introduced into the body cavity through the pipe 40 as shown in FIG. After that, the handle 30 of the introduction forceps 24 is opened, for example, a desired organ is grasped by the grasping forceps 16, and the grasping forceps 16 is introduced.
Then, the introduction forceps 24 is taken out of the body cavity.

Next, the straight needle 18 is set on the needle supporting portion 48 of the needle gripping tool 26, and the needle supporting portion 48 is maintained at the closed position as shown in FIG. Straight needle 1
8 is introduced into the body cavity.

After being introduced into the body cavity, by pulling the grip 46 of the needle grasping tool 16, as shown in FIG.
The needle support 48 and the straight needle 18 are swung to the open position.

Then, as shown in FIG. 10, the tip of the straight needle 18 is made to project outside the body cavity through a desired portion of the wall of the body cavity, and the tip is pulled by, for example, an operator, so that the straight needle 18 While pulling out of the body cavity,
The needle grip 26 is removed from the needle support 48.

Next, as shown in FIG. 11, the straight needle 18
The flexible tube 14 is cut in the vicinity and the rigid rod 12 (FIG. 2) is pulled through the opening formed by this cutting.
4, and the tip of the rigid rod 12 is fitted into the hole 20 (FIG. 1) of the grasping forceps 16 as shown in FIG.

With such an installation, when the rigid rod 12 and the flexible tube 14 are pushed from outside the body cavity, for example, the rigidity of the rigid rod 12 can push the grasped organ. When the flexible tube 14 is pulled, the flexible tube 14 is connected to the grasping forceps 14, and the rigid rod 12
Is fitted into the hole 20 of the grasping forceps 14, so that the organ can be pulled. Therefore, the organ grasped by the grasping forceps 16 can be moved to a desired position. Then, by moving the organ to the desired position, the desired surgery can be suitably performed.

When the grasping forceps 16 is taken out after the desired operation is completed, for example, the grasping forceps 16 is grasped by the introducing forceps 24 and the rigid rod 12 is pulled from the outside of the body cavity so that the distal end of the rigid rod 12 is removed. Hole 20 of grasping forceps 16
Remove from Then, for example, the introduction forceps 24 holds the flexible tube 14 and pulls the tip of the flexible tube 14 into the body cavity. After that, the grasping forceps 16 is introduced by the introduction forceps 24.
Grasp the rear part 38 (FIG. 1), and through the pipe 40,
The grasping forceps 16 is taken out of the body cavity, and then the flexible tube 1
4 is taken out of the body cavity.

Next, the introduction forceps 24 will be described with reference to FIGS. 13 to 16.

As described above, the introduction forceps 24 has the main body 28.
And a handle 30 pivotably connected to the main body 28,
A rotor 32 installed so as to be rotatable about the central axis of the main body 28 in the longitudinal direction; Is equipped with.

The handle 30 is installed on the main body 28 so that the handle 30 can be swiveled around the swivel axis 50. Handle 3
0 has a cavity 54 in its upper part that accommodates an enlarged portion 52 provided at one end of the connecting rod 34. Therefore, when the handle 30 is moved from the open state shown in FIG. 13 to the closed state shown in FIG. 14,
The connecting rod 34 is moved to the left in FIGS. 13 and 14. The enlarged portion 52 of the tie rod 34 is housed within the cavity 54 of the handle 30 so that the tie rod 34 is rotatable about its longitudinal axis while the tie rod 34 is rotatable.
Cannot move relative to the handle 30 along its longitudinal axis.

FIG. 15 is a sectional view taken along the line AA in FIG. 13. As shown in FIG. 15, the rotor 32 is fixed to the connecting rod 34 by the spokes 56. The spokes 56 extend in two slit-shaped openings 58 provided in the main body 28. Handle-side portion 5 of the main body 28
9 and the gripper side portion 61 (FIG. 13) are connected by two connecting portions 60. The spoke 56 is movable in the opening 58 between the two connecting portions 60. Thus, the rotor 32 is integral with the connecting rod 34, for example about 150 ° about the longitudinal axis of the connecting rod 34.
It can rotate over an angular range of.

FIG. 16 is a sectional view taken along line BB of FIG.
As shown in FIG. 16, the gripper 36 includes a first gripping arm 62, a second gripping arm 64, and a pivot shaft 66 that pivotally supports the first and second gripping arms 62 and 64.
A first connecting arm 68 pivotably connected to the first gripping arm 62 at one end, and a second connecting arm 70 pivotably connected to the second gripping arm 64 at one end. The other ends of the first and second connecting arms 68 and 70 are pivotally connected to the connecting rod 34 at one end as shown. Both ends of the pivot shaft 66 are arranged in an annular groove 72 provided in the inner wall of the main body 28. Thus, the pivot shaft 66 is rotatable about the longitudinal axis of the body 28. To facilitate this rotation of the pivot shaft 66, an annular ring (not shown) may be arranged in the annular groove 72, and both ends of the pivot shaft 66 may be fixed to this annular ring.

Since the introducing forceps 24 is constructed as described above, as shown in FIG. 13, when the handle 30 is open, the connecting rod 34 is pushed forward and is shown in FIG. As described above, the first and second gripping arms 6
2 and 64 and the first and second connecting arms 68 and 70 form a space having a substantially square cross section, and the first and second gripping arms 62 and 64 are open.

As shown in FIG. 14, when the handle 30 is closed, the connecting rod 34 is pulled, and the first and second gripping arms 62 and 64 and the first and second connecting arms 68 and 70 are pulled.
Become substantially straight, and the first and second gripping arms 6
2 and 64 are closed.

Enlarged portion 5 provided at one end of the connecting rod 34
2 is possible within the cavity 54 about the longitudinal axis of the connecting rod 34 and the first and second gripping arms 62 and 6
The pivot shaft 66 carrying the 4 is possible in the annular groove 72 about the longitudinal axis of the connecting rod 34, so that by rotating the rotor 32, the connecting rod 34 is rotated about its longitudinal axis. Can be rotated. This allows the first and second gripping arms 62 and 64 to
The rotational angular position of the connecting rod 34 about the longitudinal axis can be adjusted.

A member that can be used as a gripping member instead of the gripping forceps 16 (FIG. 1) will be described with reference to FIGS.

The gripping member shown in FIGS. 17 and 18 is composed of gripping forceps 76 having a flat gripping portion 74, and like the gripping forceps 16 shown in FIG. 1, a force is applied in the closing direction. The spring 78 is provided. This gripping forceps 7
6 has a hole 80 into which one end of the rigid rod is inserted,
A flexible tube 82 is connected to the grasping forceps 76.

The gripping forceps 84 constituting the gripping member shown in FIGS. 19 and 20 has a plurality of jagged portions 86 on the gripping portion.
17 and 18 in that the gripping forceps 76 shown in FIG.
However, the others are configured similarly to this.

The clip 88, which constitutes the gripping member shown in FIGS. 21 and 22, is composed of two flat gripping portions 90 and a connecting portion 92 connecting these gripping portions 90. The connecting portion 92 is formed of, for example, a metal, and when an external force is applied to deform the connecting portion 92 and bring the gripping portions 90 into close proximity to each other to form as shown in FIG. 22, the shape is maintained. It This clip 88
Also has a hole 94 into which one end of the rigid rod is inserted, and a flexible tube 96 is connected to this clip 88.

The hook 98 constituting the gripping member shown in FIG. 23 is composed of a curved needle and has a hole 100 into which one end of a rigid rod is inserted, and the hook 98 is flexible. The pipe 102 is connected.

Next, with reference to FIGS. 24 and 25, an end tractor according to the second embodiment of the present invention will be described.

As shown in FIG. 24, at one end of the rigid rod 104 of this end tractor, a guide rod portion 106 having a rounded tip and a small outer diameter and a screw portion 108 are formed.

As shown in FIG. 25, the end tractor body 110 of this end tractor includes a flexible tube 112,
The grasping forceps 114 is connected to one end of the flexible tube 112.

A guide rod portion 106 and a screw portion 108 of the rigid rod 104 are provided in a hole 116 provided in the grasping forceps 114.
Has an end hole 118 and a threaded portion 120 having a shape conforming to.

Since this end tractor has the structure as described above, when the rigid rod 104 is inserted into the flexible tube 112 to connect one end of the rigid rod 104 and the grasping forceps 114, the guide rod portion is used. By 106, the rigid rod 10
4 can be easily inserted into the hole 116 of the grasping forceps 114. Then, by rotating the rigid rod 104, the threaded portion 108 of the rigid rod 104 and the threaded portion 120 of the hole 116 of the grasping forceps 114 are screwed together. In this way, the rigid rod 104 and the grasping forceps 114 can be integrally combined, and the operator grasps the other end of the rigid rod 104 to easily move the region grasped by the grasping forceps 114. You can

Next, an end tractor according to the third embodiment of the present invention will be described with reference to FIGS.

This end tractor comprises an end tractor body 122 as shown in FIG. 26 and a hollow rigid rod 124 as shown in FIG. 27, for example made of hard plastic.
Consists of

The end tractor main body 122 comprises a thread 126 which constitutes an elongated flexible member, and grasping forceps 128 which constitutes a grasping member and is connected to one end of the thread 126. A straight needle 130 is provided at the other end of the thread 126. The thread 126 can be formed by various threads including a suture thread. A metal wire, a plastic filament, or the like can be used instead of the thread 126. The grasping forceps 128 can be configured similarly to the grasping forceps 16 shown in FIG. The outer diameter of the straight needle 130 is substantially equal to the outer diameter of the hollow rigid rod 124.

As shown in FIG. 27, the hollow rigid rod 12
4 is a central hole 13 formed along the central axis of the longitudinal direction.
2 and the inner diameter of the central hole 132 is slightly larger than the outer diameter of the thread 126.

As shown in FIG. 28, the grasping forceps 128 is used.
Has a hole 134 whose shape matches the shape of the tip of the hollow rigid rod 124.

This end tractor is used similarly to the end tractor of the first embodiment. That is, the grasping forceps 128 of this end tractor is introduced into the body cavity by the introducing forceps 24 as shown in FIG. 3, for example, and grasps a desired portion. Then, the straight needle 130 (FIG. 26) is, for example, by the needle gripping tool 26 as shown in FIG. 4 and FIG.
It is introduced into the body cavity. Then, the tip of the straight needle 130 is projected outside the body cavity, and the straight needle 130 is taken out of the body cavity. The thread 126 is cut outside the body cavity. And the thread 126
From the tip of the hollow rigid rod 124 into the central hole 132,
Pull out the thread 136 from the rear end. And the hollow rigid rod 12
The tip of No. 4 is introduced into the body cavity through the hole in the wall of the body cavity formed by the straight needle 130. As above, straight needle 13
Since the diameter of 0 is selected to be substantially equal to the diameter of the hollow rigid rod 124, the hollow rigid rod 124 can be easily introduced into the body cavity. Then, the hollow rigid rod 124 is introduced into the body cavity along the thread 126, and the tip of the hollow rigid rod 124 is fitted into the hole 134 of the grasping forceps 128.

With such an installation, by operating the hollow rigid rod 124 from the outside of the body cavity, the portion grasped by the grasping forceps 128 can be moved to a desired position.

As described above, in this embodiment, since the tip of the hollow rigid rod 124 is introduced into the body cavity after the thread 126 is passed through the hollow rigid rod 124, the thread 126
Must be longer than the flexible tube of the above embodiment.

Next, an end tractor according to the fourth embodiment will be described with reference to FIG.

This end tractor comprises a hollow rigid rod 136.
The distal end portion of the gripping forceps 138 and the portion of the gripping forceps 138 to which the gripping forceps are connected are different from those of the end tractor of the third embodiment, but the other parts are configured similarly.

As shown in FIG. 29, a fitting hole 140 is provided at the tip of the hollow rigid rod 136 of the end tractor according to the fourth embodiment, and the fitting hole 140 is provided.
A threaded portion 142 is formed inside. A substantially columnar protrusion 144 is provided on the portion of the grasping forceps 138 to which this is joined, and a screw portion 146 is formed on the tip portion of this protrusion 144.

Since the end tractor according to this embodiment is constructed as described above, the hollow rigid rod 136 is introduced along the thread 148, and the protrusion 144 of the grasping forceps 138 is fitted into the fitting hole 140 of the hollow rigid rod 136. By inserting the hollow rigid rod 136 into the inside and rotating the hollow rigid rod 136, the grasping forceps 138
And the hollow rigid rod 136 can be screwed together.

Next, an end tractor according to the fifth embodiment will be described with reference to FIG.

The end tractor according to the fifth embodiment is different from the end tractors of the third and fourth embodiments in that the distal end portion of the hollow rigid rod 150 and the portion of the grasping forceps 152 to which it is connected are different from the end tractors of the third and fourth embodiments. Are similarly configured.

As shown in FIG. 30, a plurality of radially extending projections 154 are provided at the distal end portion of the hollow rigid rod 150 of the end tractor according to the fifth embodiment. A groove 156 having a shape matching the protrusion 154 is provided in the portion of the grasping forceps 152 to which the hollow rigid rod 150 is connected.

Since the end tractor according to this embodiment is constructed as described above, when the hollow rigid rod 150 is introduced along the thread 158 and joined to the grasping forceps 152, the protrusion 154 of the hollow rigid rod 150 is formed. , Grasping forceps 152
The hollow rigid rod 150 and the grasping forceps 152 are joined by fitting tightly in the groove 156.

The protrusion 154 of the hollow rigid rod 150 and the groove 156 of the grasping forceps 152 are not limited to the shapes shown in FIG. 30, but can be various shapes.

Instead of the above-mentioned means for connecting the gripping member and the rigid rod, for example, a magnet (not shown) is provided at the connecting portion between the gripping member and the rigid rod, whereby the gripping member and the rigid rod are connected to each other. It can also be detachably coupled.

In the above embodiment, the elongated flexible member is a flexible tube or thread, and the rigid rod is a center into which a solid rigid bar or thread introduced into the flexible tube is introduced. It is a hollow rigid rod with holes. Therefore, in the above embodiment, one of the elongated flexible member and the rigid rod fits completely around the other. Instead of this, for example, FIG.
As shown in FIG. 1, one may be fitted so as to partially surround the other. That is, in this aspect, the elongated flexible member is constituted by the flexible member 160 having a substantially 8-shaped cross section, and the rigid rod partially surrounds the flexible member 160 as shown. ,
The rigid member 162 has a substantially C-shaped cross section. On the contrary, the rigid rod is composed of a rigid member having a substantially 8-shaped cross section, and the flexible member has a substantially C-shaped cross section partially surrounding the rigid rod. It can also be configured by members.

In the above embodiment, the straight needle is provided at one end of the flexible member. However, although it is preferable to provide this straight needle, this is not an essential component of the end tractor of the present invention. For example, in addition to the pipe 40 as shown in FIG. 7, a second pipe (not shown) having a relatively small diameter is provided in advance.
It is also possible to take out a flexible member such as a flexible tube or a thread to the outside of the body cavity through the pipe of (1) and introduce the rigid rod into the body cavity. By doing so, it is not necessary to provide a straight needle.

On the other hand, if a straight needle is provided at one end of the flexible member, the straight needle and the flexible member can be taken out of the body cavity from any part of the wall of the body cavity, and treatment can be performed depending on the situation. Therefore, it is preferable to use a straight needle. Furthermore, surgical wounds formed with straight needles are generally smaller than surgical wounds formed with pipes. From this point as well, it is preferable to use the straight needle.

[0068]

According to the present invention, it is possible to provide an end tractor for moving an organ, an affected part or the like in endoscopic surgery or the like.

Further, according to the present invention, it is possible to provide an end tractor which can move an organ, an affected area or the like from outside the body cavity by forming a slight opening in the wall of the body cavity.

Furthermore, according to the present invention, it is possible to provide an introduction forceps capable of suitably introducing the grasping member of the end tractor into the body cavity.

Further, according to the present invention, it is possible to provide a needle gripping tool which can suitably introduce the straight needle of the end tractor into the body cavity.

[Brief description of drawings]

FIG. 1 is a front view of an end tractor body of an end tractor according to a first embodiment of the present invention.

FIG. 2 is a front view of a rigid rod of the end tractor according to the first embodiment of the present invention.

FIG. 3 is a front view of an introduction forceps according to an embodiment of the present invention for introducing grasping forceps into a body cavity.

FIG. 4 is a front view of a closed state of a needle gripping tool according to an embodiment of the present invention for introducing a straight needle into a body cavity.

FIG. 5 is an open front view of the needle gripping tool according to the embodiment of the present invention for introducing a straight needle into a body cavity.

6 is an enlarged view of a needle support portion of the needle gripping tool shown in FIG.

FIG. 7 is a schematic diagram illustrating a method of using the end tractor shown in FIGS. 1 and 2.

FIG. 8 is a schematic diagram illustrating a method of using the end tractor shown in FIGS. 1 and 2.

FIG. 9 is a schematic view illustrating a method of using the end tractor shown in FIGS. 1 and 2.

FIG. 10 is a schematic diagram illustrating a method of using the end tractor shown in FIGS. 1 and 2.

FIG. 11 is a schematic view illustrating a method of using the end tractor shown in FIGS. 1 and 2.

FIG. 12 is a schematic diagram illustrating a method of using the end tractor shown in FIGS. 1 and 2.

FIG. 13 is a front view of the introduction forceps shown in FIG. 3 in an open state.

FIG. 14 is a front view of the introducing forceps shown in FIG. 3 in a closed state.

FIG. 15 is a cross-sectional view taken along the line AA of FIG.

16 is a sectional view taken along the line BB of FIG.

17 is a front view of an open state of a member that can be used as a gripping member instead of the gripping forceps of the end tractor of FIG. 1.

FIG. 18 is a front view of the member shown in FIG. 17 in a closed state.

FIG. 19 is a front view of an open state of a member that can be used as a gripping member instead of the gripping forceps of the end tractor of FIG. 1.

20 is a front view of the member shown in FIG. 19 in a closed state.

21 is a front view of an open state of a member that can be used as a gripping member instead of the gripping forceps of the end tractor of FIG. 1. FIG.

22 is a front view of the member of FIG. 21 in a closed state.

23 is a front view of a member that can be used as a gripping member instead of the gripping forceps of the end tractor of FIG. 1. FIG.

FIG. 24 is a front view of the rigid rod of the end tractor according to the second embodiment of the present invention.

FIG. 25 is a front view of the end tractor body with the rigid rod of the end tractor according to the second embodiment of the present invention inserted.

FIG. 26 is a front view of the end tractor body of the end tractor according to the third embodiment of the present invention.

FIG. 27 is a front view of the rigid rod of the end tractor according to the third embodiment of the present invention.

FIG. 28 is an enlarged view of a main part of the end tractor according to the third embodiment of the present invention.

FIG. 29 is an enlarged view of the essential parts of the end tractor according to the fourth embodiment of the present invention.

FIG. 30 is an enlarged view of the essential parts of the end tractor according to the fifth embodiment of the present invention.

FIG. 31 is a simplified diagram showing another mode of the flexible member and the rigid rod.

[Explanation of symbols]

 10 End Tractor Main Body 11 Rigid Rod 12 Flexible Tube 16 Gripping Forceps 18 Straight Needle 20 Hole 22 Spring 24 Gripping Part 24 Gripping Forceps 26 Needle Gripping Tool 74 Gripping Forceps 82 Flexible Tube 90 Gripping Section 96 Flexible Tube 102 Yes Flexible tube 104 Rigid rod

Claims (14)

[Claims] 1. An elongated flexible member, a gripping member connected to one end of the flexible member, and a rigid rod, wherein one of the rigid rod and the flexible member fits into the other. The rigid rod is movable along the longitudinal direction of the flexible member, and the gripping member and the rigid rod are provided with a coupling means for detachably coupling them. End tractor. 2. The end tractor according to claim 1, wherein the flexible member is constituted by a flexible pipe, and the rigid rod is constituted by a solid rigid rod fitted into the flexible pipe. 3. The end tractor according to claim 1, wherein the flexible member is constituted by a thread, and the rigid rod is constituted by a hollow rigid rod having a hole into which the thread is introduced. 4. The end tractor according to claim 1, wherein a straight needle is provided at the other end of the flexible member. 5. A means for connecting the gripping member and the rigid rod,
The end tractor according to any one of claims 1 to 4, which comprises a distal end of the rigid rod and a hole provided in the holding member that houses the rigid rod. 6. The connecting means for connecting the gripping member and the rigid rod,
The end tractor according to any one of claims 1 to 4, comprising a threaded portion provided on these. 7. The connecting means for connecting the gripping member and the rigid rod,
The end tractor according to any one of claims 1 to 4, comprising a convex portion and a concave portion which are provided on these and which are fitted to each other. 8. An elongated flexible member, a gripping member connected to one end of the flexible member, and a rigid rod, wherein one of the rigid rod and the flexible member is attached to the other. Of an end tractor which is fitted to allow the rigid rod to move along the length of the flexible member and wherein the gripping member and the rigid rod comprise coupling means for releasably coupling them. In an introduction forceps for introducing a gripping member into a body cavity, a main body, a handle rotatably installed on the main body, a gripper provided at one end of the main body, and the handle and the gripper are connected to each other. An introducing forceps, comprising: a connecting member, wherein the connecting member is moved by a turning motion of the handle, and thereby the gripper is opened and closed. 9. The connecting member is constituted by a rigid connecting rod, and the gripper has a first gripping arm and a second gripping arm.
A gripping arm, a pivot shaft rotatably supporting the first and second gripping arms, a first connecting arm pivotally connected to the first gripping arm at one end, and a pivoting end to the second gripping arm at one end The introduction forceps according to claim 8, further comprising a second connection arm connected to the connection rod, the other ends of the first and second connection arms being pivotally connected to one end of the connection rod. 10. The connecting rod is connected to the handle immovably along the longitudinal axis of the connecting rod and rotatably about the longitudinal axis of the connecting rod, the connecting rod comprising: A pivot shaft connected to a manually operable rotor and pivotably supporting the first and second gripping arms,
The introduction forceps according to claim 9, wherein the introduction forceps is installed in the main body so as to be pivotable around a central axis of the connecting rod in the longitudinal direction. 11. An elongated flexible member, a gripping member connected to one end of the flexible member, a straight needle provided at the other end of the flexible member, and a rigid rod, One of the rigid bar and the flexible member is fitted to the other so that the rigid bar is movable along the longitudinal direction of the flexible member, and the gripping member and the rigid bar move them. In a needle gripping tool for introducing a straight needle of an end tractor having a coupling means for detachably coupling into a body cavity and piercing the straight needle into the wall of the body cavity, a main body and a manually operable grip are provided. A needle supporting portion that supports the straight needle, and a connecting member that connects the grip and the needle supporting portion to each other. Closed position to be positioned substantially parallel to the open position and open position with a predetermined angle from the closed position. The needle support is mounted on the body so as to be pivotable to and from a position, and operation of the grip causes the connecting member to move, thereby causing the needle support to move to the closed position. A needle gripping tool that can be swung between the open position and the open position. 12. The grip is moveable between a depressed position proximate to the body and a retracted position spaced from the body, the grip comprising the pushed position and the pulled position. The needle gripper according to claim 11, wherein the connecting member is moved by moving between the opened and closed positions. 13. The grip has a first rotational position and a second rotational position.
Is rotatable about a central longitudinal axis of the connecting member and the grip is rotated between the first rotational position and the second rotational position. The connection member can be moved.
Needle gripping tool. 14. The needle support supports the straight needle by snapping and pulls the straight needle supported by the needle support along its longitudinal axis from the needle support. The needle gripper according to any one of claims 11 to 13, which is removable.