JPH06292676A - Clamping pincers - Google Patents

Abstract

PURPOSE:To simplify constitution and to enhance operability by decreasing the number of constituting parts. CONSTITUTION:The clamping pincers are provided with supporting mechanisms 32 for movably supporting meshing members 26, 27 of a stationary handle 10 and moving handle between a detaining position where the meshing members 26, 27 are meshed with each other and a disengaging member where the meshing of the meshing members 26, 27 is released. The meshing members 26, 27 are energized to each other toward the detaining position by means of belleville springs 33.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to grasping forceps used when performing a laparoscopic procedure.

[0002]

2. Description of the Related Art Generally, grasping forceps are used when performing a procedure under a laparoscope, for example. As a grasping forceps of this type, one having a structure shown in USP 4722339 is conventionally known.

The gripping forceps main body is provided with a gripping member which is openable and closable at the tip end thereof and a handle having a pair of openable and closable handle constituting members at the base end. Then, the gripping member is opened / closed in accordance with the opening / closing operation of the handle component member.

Further, a meshing member is provided so as to protrude from each handle constituting member. Then, when the both handle constituent members are closed, the meshing members of the respective handle constituent members are respectively meshed with each other so that the pair of handle constituent members can be engaged and disengaged at an arbitrary opening position. ing.

The handle locking mechanism is provided with a lock release lever capable of projecting and retracting in the meshing portion between the meshing members of each handle constituting member, and the handle locks with the operation of the lock releasing lever. The mechanism is unlocked.

[0006]

In the above-mentioned conventional structure, a lock releasing mechanism for locking the lock mechanism of the handle is constructed by combining a plurality of parts with the handle. However, in this case, unlike the handle of the grasping forceps for general surgery (without using a laparoscope), the handle structure becomes complicated, and there is a problem that the cost becomes high.

Further, since the handle is provided with a groove or other parts in order to incorporate the unlocking mechanism into the handle of the grasping forceps, there is a problem that it takes time to clean the grasping forceps. Further, since the structure is different from the handle of the grasping forceps for general surgery, there is a problem that it takes time for a user such as a doctor to be able to use this type of grasping forceps.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a grasping forceps which is capable of reducing the number of constituent parts and simplifying the structure and which is excellent in operability. is there.

[0009]

According to the present invention, a gripping member that can be opened and closed is provided at a distal end portion, and a handle having a pair of openable and closable handle constituent members is provided at a base end portion. Accordingly, a gripping forceps body for opening and closing the gripping member, a meshing member projecting from each of the handle constituent members, and engagingly and disengageably locking the pair of handle constituent members at an arbitrary opening position, A support mechanism for movably supporting the engaging members between an engaging position for engaging the engaging members of each handle component and an unlocking position for releasing the engagement between the engaging members; Urging means for urging the member in the locking position direction.

[0010]

In the normal opening / closing operation of the two handle constituting members of the handle, the engaging members are held in a state of being urged toward the engaging position by the urging means so that the engaging members of the two handle constituting members are engaged with each other. When releasing, the engagement between the meshing members of the two handle constituting members is released by moving the support mechanism against the urging force of the urging means. Furthermore, if the force for moving the support mechanism is weakened after the engagement between the engaging members is released, the urging force of the urging means restores the initial position where the engaging members are urged in the engaging position direction. is there.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. 1 (A) to 1 (D). FIG. 1A shows a schematic structure of the entire grasping forceps, and 1 is a grasping forceps main body.
The grasping forceps main body 1 is provided with an insertion portion 2 and a handle 3 connected to a base end portion of the insertion portion 2.

Further, the insertion section 2 is provided with a grasping member 5 which can be opened and closed at the distal end of a long sheath 4. The gripping member 5 is provided with a fixed gripping member 6 provided at the distal end of the sheath 4 and a movable gripping member 7. The movable gripping member 7 is rotatably connected to the fixed gripping member 6 about a pin 8. In this case, the movable gripping member 7 is connected to the distal end portion of the operation rod 9 which is disposed inside the sheath 4 and is movable in the axial direction.

Further, the handle 3 is provided with a fixed handle (handle constituting member) 10 and a movable handle (handle constituting member) 11. Where the fixed handle 1
0 and the movable handle 11 are respectively formed with ring-shaped finger hooks 10a and 11a on the base end side.

Further, the movable handle connecting portion 13, the insertion portion mounting hole 10b into which the base end portion of the insertion portion 2 is inserted, and the insertion hole 1 for the operating rod 9 are provided on the distal end side of the fixed handle 10.
0c are formed. The proximal end portion of the sheath 4 of the insertion portion 2 is inserted into the insertion portion mounting hole 10b and fixed by a fixing screw 12. The proximal end portion of the operating rod 9 in the sheath 4 extends to the outside through the insertion hole 10c.

Further, a tip end portion of the movable handle 11 is attached to the movable handle connecting portion 13 so as to be rotatable around a rotating shaft 14. Further, between the fixed handle 10 and the movable handle 11, a gripping member drive mechanism section 15 for opening / closing the movable gripping member 7 according to the opening / closing operation of the movable handle 11, and between the fixed handle 10 and the movable handle 11 are optional. And a locking portion 16 that is releasably locked at the opening position.

The gripping member drive mechanism section 15 is provided with two link members 17 and 18. Here, one end of one of the link members 17 is connected to the movable handle 11 so as to be rotatable around the connecting pin 19. further,
One end of the other link member 18 is rotatably connected to the fixed handle 10 side about the connecting pin 20.

The other ends of the two link members 17 and 18 are rotatably connected to the base end of the joining rod 22 by a connecting pin 21. The tip end of the joining rod 22 is connected to the base end of the operation rod 9 via a connecting member 23. Then, the two link members 17, 18 of the gripping member drive mechanism section 15 are swung along with the opening / closing operation of the movable handle 11, and the joining rod 22 and the connecting member 23 are interlocked with the swinging operation of the link members 17, 18. The operating rod 9 is moved in the axial direction via the to open / close the movable gripping member 7.

Further, FIG. 1D shows a connecting portion of the connecting member 23 with the operating rod 9 and the joining rod 22. As shown in FIG. 1D, a male screw portion 23a is formed at the base end portion of the connecting member 23, and a female screw portion 23b is formed at the tip end portion thereof. Further, at the tip of the joining rod 22, a female screw portion 22a screwed with the male screw portion 23a of the connecting member 23,
A female screw portion 23 of the connecting member 23 is provided at the base end portion of the operation rod 9.
The male screw part 9a screwed together with b is formed, respectively.

Here, the pitch P ₁ of the threaded portion between the joining rod 22 and the connecting member 23 is different from the pitch P ₂ of the threaded portion between the operating rod 9 and the connecting member 23 (P ₁ ≠ P ₂ ). Is set to. By rotating the connecting member 23, the entire length between the operating rod 9, the connecting member 23, and the joining rod 22 can be changed, and the opening angle of the movable gripping member 7 can be adjusted.

The engaging portion 16 has a pair of engaging members 2
6, 27 are provided. Here, one meshing member 2
One end of 6 is screwed and fixed near the finger hook 10a of the fixed handle 10, and one end of the other meshing member 27 is screwed and fixed near the finger hook 11a of the movable handle 11. As shown in FIG. 1B, ratchets 26a and 27a each having a substantially saw-tooth shape are formed on the engaging members 26 and 27, respectively. These ratchets 26a, 27
a is arranged so as to face each other, and is installed so as to be engaged with each other. It should be noted that the ratchets 26a and 27a may be provided with one or a plurality of substantially saw-toothed protrusions.

Further, FIG. 1C shows a connecting portion of the movable handle 11 in the movable handle connecting portion 13 of the fixed handle 10. In this case, the mounting groove 1 of the movable handle 11 is attached to the movable handle connecting portion 13 of the fixed handle 10.
0d is formed. The groove width of the mounting groove 10d is set to be larger than the thickness dimension of the movable handle 11.

When the movable handle 11 is mounted in the mounting groove 10d, the wall surfaces 28 on both sides of the mounting groove 10d are provided.
The meshing member 2 is provided between the a and 28b and the movable handle 11.
A gap is formed to move the movable handle 11 in the disengagement direction of the engagement members 26 and 27 to the extent that the engagement between the engagement members 6 and 27 is released.

A male screw portion 14a is formed at one end of the rotary shaft 14 of the movable handle 11. The male screw portion 14a is screwed to a female screw portion 29 formed on the wall surface 28a on one side of the mounting groove 10d of the movable handle connecting portion 13.

Further, the other wall surface 28b of the mounting groove 10d
An accommodating recess 30 for accommodating the head portion 14b of the rotating shaft 14 is formed therein, and an insertion hole 31 for inserting the rotating shaft 14 is formed in the movable handle 11.

Then, the movable handle 11 is moved along the rotating shaft 14 by the mounting groove 10d of the movable handle connecting portion 13 of the fixed handle 10 and the rotating shaft 14, and the meshing member is moved along with the moving operation of the movable handle 11. 26, 27
A support mechanism 32 is formed to movably support the engagement members 26 and 27 between an engagement position where the engagement members engage with each other and an engagement release position where the engagement between the engagement members 26 and 27 is released.

Further, on the rotating shaft 14, the movable handle 11 is provided in a gap between the movable handle 11 and the wall surfaces 28a, 28b on both sides of the mounting groove 10d of the movable handle connecting portion 13.
A disc spring (urging means) 33 for urging the engagement members 26 and 27 in the direction of the locking position is provided via the. The thickness of the disc spring 33 is smaller than the thickness of the gap so that it can be easily assembled. Instead of the disc spring 33, a leaf spring, a coil spring, a hydraulic mechanism or the like may be used.

When the gripping forceps main body 1 is assembled, the movable handle 11 and the disc spring 33 are inserted into the mounting groove 10d in the movable handle connecting portion 13 of the fixed handle 10 and then the rotary shaft 14 is screwed to rotate. The moving shaft 14 presses the movable handle 11, and the movable handle 11 presses the disc spring 33. The disc spring 33 is compressed by the pressing force at this time, and the repulsive force of the disc spring 33 causes the movable handle 11 to move through the meshing member 2 on the movable handle 11 side.
7 is pushed so as to be engaged with the meshing member 26 on the fixed handle 10 side so that the space between the meshing members 26 and 27 is a ratchet 26a,
It is adapted to be biased toward the locking position of 27a.

Next, the operation of the above configuration will be described.
The engaging portion 16 that engageably and disengages the fixed handle 10 and the movable handle 11 at an arbitrary opening position is normally engaged with the engaging members 26, 27 by the biasing force of the disc spring 33 of the movable handle connecting portion 13. The space is urged toward the locking position of the ratchets 26a and 27a. Therefore, while the gripping forceps main body 1 is being used, the ratchet 26 between the engaging members 26 and 27 is mistakenly used.
The meshing part of a and 27a does not come off.

When the ratchets 26a, 27a between the meshing members 26, 27 are disengaged, a force in the direction opposite to the biasing direction of the disc spring 33 may be applied to the movable handle 11. In this case, the movable handle 11 moves the rotating shaft 14
Along with the movement of the movable handle 11, the meshing member 27 on the movable handle 11 side is separated from the meshing member 26 on the fixed handle 10 side by moving in the direction opposite to the biasing direction of the disc spring 33. The meshing of the ratchets 26a and 27a between 26 and 27 can be released.

Further, when the force applied to the movable handle 11 is weakened after the engagement between the engaging members 26 and 27 is released, the engaging force of the disc spring 33 urges the engaging members 26 and 27 toward the engaging position. Can be returned to the initial position.

Therefore, in the above-mentioned construction, the movable handle 11 is moved along the rotating shaft 14 by the mounting groove 10d of the movable handle connecting portion 13 of the fixed handle 10 and the rotating shaft 14, and the movable handle 11 is moved. Along with the movement operation of 11, the engagement members 26 and 27 are movably supported between an engagement position where the engagement members 26 and 27 are engaged and an engagement release position where the engagement between the engagement members 26 and 27 is released. Since the support mechanism 32 is formed and the biasing force from the disc spring 33 is normally urged between the meshing members 26, 27 in the direction of the locking position of the ratchets 26a, 27a, the locking portion 16 is different from the conventional one. It is possible to reduce the number of components of the lock release mechanism, simplify the configuration, and improve the operability of the grasping forceps body 1.

Further, since the interlocking members 26 and 27 are urged in the direction of the locking position of the ratchets 26a and 27a by the urging force from the disc spring 33, this is a case where the handle 3 is unintentionally input. Even so, it is possible to prevent the locking portion 16 from coming off easily.

Further, by pressing the movable handle 11 with a force stronger than the biasing force from the disc spring 33, the disc spring 3
3 is compressed, and the movable handle 11 is locked by the corresponding portion 1
Ratchet 26a, 27a between the meshing members 26, 27 of 6
Can be moved toward the unlocking position. Therefore, even when the movable handle 11 cannot be bent significantly, the engaging portion 16 can be engaged and disengaged.

Further, FIGS. 2A and 2B show the second embodiment of the present invention.
FIG. This is the fixed handle 10
A gap for moving the movable handle 11 provided in the first embodiment at the connecting portion of the movable handle 11 in the movable handle connecting portion 13 in the disengagement direction of the engaging members 26 and 27 is omitted, and the movable handle 11 and the fixed handle 10 are movable. Handle 11
Locking portion 1 that locks between and at a freely openable position
6 is a modification of the attachment structure of the meshing member 26 on the fixed handle 10 side in FIG.

That is, in this embodiment, as shown in FIG. 2B, the engagement position and the engagement member 2 for engaging the engagement members 26 and 27 with the support portion of the engagement member 26 on the fixed handle 10 side.
A support mechanism 45 that movably supports the engagement members 26 and 27 between the engagement members 26 and 27 and an engagement release position that releases the engagement between the engagement members 6 and 27, and a disc spring that urges the engagement members 26 and 27 toward the engagement position. 46 are provided respectively.

In FIG. 2B, 41 is a fixed handle 10.
It is a mounting hole for the side engagement member 26. This mounting hole 41
Is set to be larger than the mounting end portion 44 of the meshing member 26 inserted into the mounting hole 41.

Then, the engaging member 26 is fitted into the mounting hole 41.
When the mounting end portion 44 of is inserted, the wall surfaces 42a and 42b on both sides of the mounting hole 41 and the mounting end portion 4 of the meshing member 26 are inserted.
A gap is formed between the movable handle 11 and the gear 4 to move the movable handle 11 in the disengagement direction of both the engagement members 26 and 27 to the extent that the engagement between the engagement members 26 and 27 is released.

Further, 43 is a wall surface 4 on both sides of the mounting hole 41.
2a, 42b is a rotating pin that is installed between the rotating pin 43 and the mounting end portion 44 of the engaging member 26.
3 is movably supported in the axial direction. Then, with the movement of the meshing member 26, the meshing members 26, 2
The meshing members 26, 27 are arranged between a locking position for meshing 7 and a locking release position for canceling meshing between the meshing members 26, 27.
A support mechanism 45 that movably supports the space is formed. Further, the rotating pin 43 is provided with the engaging members 26, 27.
A disc spring 46 is arranged to urge the space toward the locking position.

Therefore, in the above-mentioned construction, the mounting end portion 44 of the meshing member 26 is attached to the wall surface 4 on both sides of the mounting hole 41.
2a, 42b is moved along a rotating pin 43 provided between the engaging members 26, 2 and the engaging position for engaging the engaging members 26, 27 with the movement of the engaging member 26.
The meshing member 2 is engaged with the locking release position where the meshing between 7 is released.
A support mechanism 45 for movably supporting the coupling members 2 and 6 is formed, and the meshing member 2 is normally driven by the urging force from the disc spring 46.
6 and 27 are urged in the locking position direction of the ratchets 26a and 27a, the components of the locking release mechanism of the locking portion 16 are the same as in the first embodiment, as in the first embodiment. The number can be reduced to simplify the configuration and improve the operability of the grasping forceps body 1.

3A to 3C show a third embodiment of the present invention.

FIG. 3A shows a schematic structure of the entire grasping forceps. Reference numeral 51 is a grasping forceps main body, 52 is an insertion portion, and 53 is a handle on the hand side.

Further, the insertion portion 52 has a long sheath 54.
A gripping member 55 that can be opened and closed is provided at the tip of the.
The gripping member 55 is provided with a fixed gripping member 56 provided at the distal end of the sheath 54 and a movable gripping member 57. The movable gripping member 57 is rotatably connected to the fixed gripping member 56 about a pin 58. In this case, the movable grip member 57 is connected to the distal end portion of the operation rod 59 which is disposed inside the sheath 54 so as to be movable in the axial direction.

A fixed handle 60 is attached to the handle 53.
And a movable handle 61. Here, the fixed handle 60 and the movable handle 61 are respectively formed with ring-shaped finger hooks 60a and 61a on the base end side.

Further, a movable handle connecting portion 63, an insertion portion mounting hole 60b into which the proximal end portion of the insertion portion 52 is inserted, and an insertion hole 60c for the operating rod 59 are formed on the distal end side of the fixed handle 60. ing. This insertion part mounting hole 60
The proximal end portion of the sheath 54 of the insertion portion 52 is inserted into b and fixed by a fixing screw. The proximal end portion of the operation rod 59 inside the sheath 54 extends to the outside through the insertion hole 60c.

An engaging groove 61b is formed on the distal end side of the movable handle 61 for engaging with a joining member 62 connected to the proximal end of the operating rod 59. Further, the distal end portion of the movable handle 61 is attached to the movable handle connecting portion 63 so as to be rotatable around the rotation shaft 70.

The fixed handle 60 and the movable handle 6
A locking portion 64 having the same structure as the locking portion 16 of the first embodiment, which locks the fixed handle 60 and the movable handle 61 so as to be engageable and disengageable at an arbitrary opening position. It is provided.

That is, the engaging portion 64 is provided with a pair of engaging members 65 and 66. Here, one end portion of one meshing member 65 has a finger hook portion 60 a of the fixed handle 60.
It is screwed and fixed in the vicinity, and one end portion of the other meshing member 66 is screwed and fixed in the vicinity of the finger hook portion 61a of the movable handle 61. As shown in FIG.
As shown in (C), the ratchets 65a, 66 having a substantially sawtooth shape
a are formed respectively. These ratchets 65
a and 66a are arranged so as to face each other and are installed so as to be engaged with each other. It should be noted that the ratchets 65a and 66a may have one or more sawtooth-shaped projections.

Further, FIG. 3B shows a connecting portion of the movable handle 61 in the movable handle connecting portion 63 of the fixed handle 60, which has the same structure as that of the first embodiment. That is, the movable handle connecting portion 63 of the fixed handle 60 is provided with the mounting groove 69 of the movable handle 61. The groove width of the mounting groove 69 is set to be larger than the thickness dimension of the movable handle 61.

The movable handle 6 is placed in the mounting groove 69.
When the 1 is mounted, the wall surfaces 68a on both sides of the mounting groove 69,
68b and the movable handle 61 between the engagement members 65, 6
A gap is formed to move the movable handle 61 in the disengagement direction of the engagement members 65 and 66 to the extent that the engagement between the six engagement members is released.

A male screw portion 70a is formed at one end of the rotary shaft 70 of the movable handle 61. The male screw portion 70a is screwed to a female screw portion 71 formed on a wall surface 68b on one side of the mounting groove 69 of the movable handle connecting portion 63.

Further, an accommodation recess 72 for accommodating the head portion 70b of the rotary shaft 70 is formed on the other wall surface 68a of the mounting groove 69, and the movable handle 61 is inserted through the rotary shaft 70. A hole is formed.

Then, the movable handle 61 is moved along the rotating shaft 70 by the mounting groove 69 of the movable handle connecting portion 63 of the fixed handle 60 and the rotating shaft 70, and the meshing member is moved along with the moving operation of the movable handle 61. A support mechanism 73 is formed to movably support the engagement members 65 and 66 between an engagement position where the engagement members 65 and 66 are engaged with each other and an engagement release position where the engagement between the engagement members 65 and 66 is released. .

Further, on the rotating shaft 70, the meshing members 65 and 66 are provided in the gaps between the movable handle 61 and the wall surfaces 68a and 68b on both sides of the mounting groove 69 of the movable handle connecting portion 63 via the movable handle 61. A disc spring 74 for urging the space toward the locking position is provided. Therefore, in the structure described above, the movable handle connecting portion 6 of the fixed handle 60 is provided.
By the mounting groove 69 of 3 and the rotating shaft 70, the movable handle 6
1 is moved along the rotary shaft 70, and the movable handle 6
Along with the movement operation of No. 1, the meshing members 65 and 66 are movably supported between a locking position where the meshing members 65 and 66 are meshed with each other and a locking release position where the meshing between the meshing members 65 and 66 is released. Since the support mechanism 73 is formed and normally the urging force from the disc spring 74 urges the space between the engaging members 65 and 66 toward the locking position of the ratchets 65a and 66a, the locking portion 64 is different from the conventional one. It is possible to reduce the number of constituent parts of the unlocking mechanism and simplify the configuration, and improve the operability of the grasping forceps main body 51.

Further, FIGS. 4A to 4D show a fourth embodiment of the present invention. This is a modification of the configuration of the locking portion 16 of the grasping forceps of the first embodiment. That is, in the present embodiment, the finger rest 10 of the fixed handle 10 is
The mounting hole 81 of the meshing member 26 and the movable handle 1 near a.
1. A mounting hole 81 for the meshing member 27 is provided near the finger hook portion 11a
Are formed respectively.

Furthermore, the fixed handle 10 and the movable handle 11 are provided with a fixing screw 8 in a direction orthogonal to the mounting hole 81.
4 mounting holes 83 are formed. The engaging members 26 and 27 inserted into the mounting holes 81 are detachably fixed by a fixing screw 84 screwed into the mounting hole 83.

Therefore, in the above-mentioned structure, the engaging members 26 and 27 of the engaging portion 16 can be replaced with each other, so that the engaging portions 16 can be oriented in suitable directions according to the dominant arm of the user. The engagement members 26 and 27 can be set and attached respectively.

Here, in the case of a right-handed user, FIG.
As shown in (C), the engagement members 26, 27 of the locking portion 16
And set each. In this case, since the movable handle 11 applies force with the thumb, when applying force to the handle 3 with the right hand, the force is applied in the direction indicated by the solid line arrow in FIG. 4C. Therefore, a force is applied to the ratchets 26a and 27a of the respective meshing members 26 and 27 of the locking portion 16 in the direction in which they mesh with each other, so that the meshing of the meshing members 26 and 27 will not be accidentally released during operation.

In FIG. 4 (C), the dotted arrows indicate the engaging members 2 of the engaging portion 16 when a force is applied to the handle 3 with the left hand.
6 and 27 show the directions of the forces applied to the ratchets 26a and 27a. In this case, the directions of the forces applied to the ratchets 26a and 27a of the meshing members 26 and 27 are the disengagement directions.

Therefore, when used with the left hand, the locking portion 1
The mounting portions of the meshing members 26 and 27 of No. 6 are rotated 180 degrees as shown in FIG. Accordingly, when operated with the left hand, the ratchets 26a, 26a of the meshing members 26, 27,
It is possible to prevent a force from being applied to 27a in the disengagement direction.

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

[0061]

According to the present invention, the interlocking members are movably supported between the interlocking positions for engaging the interlocking members of the handle components and the unlocking position for releasing the interlocking of the interlocking members. Since the support mechanism is provided and the engagement members are urged in the locking position direction by the urging means, the number of constituent parts can be reduced and the configuration can be simplified, and the operability is excellent.

[Brief description of drawings]

FIG. 1 shows a first embodiment of the present invention (A)
Is a schematic configuration diagram of the entire grasping forceps, (B) is a side view showing a meshing state of a meshing member of a locking portion, and (C) is L _{1 in} FIG. 1 (A).
-L ₁ line sectional view, (D) is a longitudinal sectional view showing a length adjusting mechanism.

FIG. 2 shows a second embodiment of the present invention (A)
Is a schematic configuration diagram of the entire grasping forceps, and (B) is a side view showing a meshing state of a meshing member of a locking portion.

FIG. 3 shows a third embodiment of the present invention (A)
Is a schematic configuration diagram of the entire grasping forceps, (B) is L of FIG.
_1- L ₁ line sectional view, (C) is a side view showing the meshing state of the meshing member of the locking portion.

FIG. 4 shows a fourth embodiment of the present invention (A)
Is a schematic configuration diagram of the entire grasping forceps, (B) is a vertical cross-sectional view showing the attachment state of the engaging member, (C) is a side view showing a right hand locking portion, and (D) is a left hand locking portion. The side view shown.

[Explanation of symbols]

1, 51 ... Grip forceps main body, 3, 53 ... Handle, 6, 5
6 ... Fixed gripping member, 7, 57 ... Movable gripping member, 10, 6
0 ... Fixed handle (handle member), 11, 61 ...
Movable handle (handle component), 26, 27, 6
5, 66 ... Engaging member, 32, 45, 73 ... Support mechanism, 3
3, 46, 74 ... Disc springs (biasing means).

Claims (1)

[Claims] 1. A grip member that can be opened and closed is provided at a distal end portion, and a handle having a pair of openable and closable handle component members is provided at a base end portion, and the grip member is opened and closed according to the opening and closing operation of the handle component member. Gripping forceps body,
A meshing member that is projectingly provided on each of the handle component members and that engageably engages between the pair of handle component members at an arbitrary opening position, and an engagement member that engages between the mesh member of each handle component member. A support mechanism for movably supporting the interlocking members between a position and an unlocking position for releasing the meshing between the interlocking members; and a biasing means for biasing the interlocking members toward the locking position. A gripping forceps comprising: