JP2002238913A - Forceps - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a forceps that does not damage an organ and correctly grip without slipping. SOLUTION: A sucking disc-shaped member 40 is provided at the tip of a pipe 20, the interior of which is sucked with a vacuum pump 25, and grips an organ by adhering the sucking disc-shaped member 40 thereto. The amount of sucking is controlled by controlling a throttle valve 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a forceps used in a surgical operation, and more particularly, to a forceps which uses a suction mechanism which can prevent a target to be gripped from being damaged when gripping a required part such as an organ in a body. .

[0002]

2. Description of the Related Art Forceps have conventionally been used as a surgical tool for holding or sandwiching organs or tissues in the body during a surgical operation. Various types of forceps are known depending on the purpose of use. For example, in an intraperitoneal surgery or the like, a metal forceps as shown in FIG. 10 is generally used.

[0003] In such forceps, a mandrel 2 is passed through a pipe 1, and a forceps body 3 substantially shaped like scissors is provided at the tip of the mandrel 2 having passed through the pipe 1. The forceps body 3 includes a pair of holding portions 3a corresponding to blades of scissors,
3b is provided to be openable and closable via fulcrums 4a and 4b.

[0004] By pushing the mandrel 2 toward the distal end side, as shown in Fig. 10, both holding portions 3a, 3b can be opened. The jaws 3a and 3b are provided with jagged uneven blades 5a and 5b so as to easily hold an organ or a tissue. When the forceps are opened, as shown in FIG. 10, the crocodile is opened. On the other hand, by pulling the mandrel 2 into the pipe 1, the holding portions 3a and 3b can be closed so as to close the scissors.

[0005] In use, desired sites such as organs,
It is inserted between the concave and convex blades 5a and 5b of both holding portions 3a and 3b, and the closing and adjusting of the holding portions 3a and 3b, that is, the pulling / pulling of the mandrel 2 is adjusted to be held.
Such forceps are used in SU from the viewpoint of affinity with a living body.
It is made of S or titanium.

[0006]

In the forceps having the above structure,
It is a configuration that grips organs and tissues with the jagged uneven blade part of the holding part, but the organs and tissues in the body are soft and always wet with blood and body fluids, etc. Even when trying to pinch with the blade portion, there were cases where it was difficult to pinch accurately due to slippage or the like.

Further, the forceps itself is formed in a relatively small size because it is operated inside the body, and when grasping a tissue portion having no easily graspable portion such as unevenness on the surface, the surface portion is inevitably pinched. Since the tissue portion is soft, resilient, and wet with a body fluid or the like, it is often difficult to grasp it with the forceps of the conventional configuration.

[0008] Since the portion to be sandwiched by the blade portion is an organ or the like, it cannot be sandwiched more strongly than necessary.
Even after holding once, the holding position sometimes shifted gradually. Furthermore, if the same portion is pinched several times for slipping, or if the pinch is pinched slightly stronger, there is a possibility that an organ or the like may be damaged.

In general, from the viewpoint of minimizing the physical burden on a patient at the time of surgery, it is desirable to shorten the operation time as much as possible. It is desirable to be able to do this reliably in a short time.

SUMMARY OF THE INVENTION It is an object of the present invention to prevent damage such as a scratch to a gripped portion when gripping an organ or the like with forceps.

SUMMARY OF THE INVENTION An object of the present invention is to make it possible to grasp an organ or the like with forceps accurately without causing a slip or the like.

The above and other objects and novel features of the present invention will become apparent from the description of the present specification and the accompanying drawings.

[0013]

SUMMARY OF THE INVENTION The present invention is directed to a forceps for gripping an object to be gripped, such as an organ or tissue in a body, in an operation, wherein the sucker-shaped member sucks the object to be gripped, and the suction surface of the sucker-shaped member. Suction means for making the internal space on the side negative pressure. The suction means is formed in a pipe connectable to a suction source, and the pipe is connected to the internal space through a penetrating portion provided in the suction cup-shaped member.

[0014] The suction cup-shaped member and the pipe are configured to be relatively movable so that the suction cup-shaped member enters and exits the pipe. The suction cup-shaped member has a skeleton member that opens in a trumpet shape when the suction cup-shaped member is protruded from the inside of the pipe, and a film that covers between the skeleton members.

The forceps has a pressing member for pressing the suction cup-shaped member from the periphery, and the suction cup-shaped member and the pressing member enter and exit an internal space in which the suction cup-shaped member is surrounded by the pressing member. And is configured to be relatively movable.

[0016]

(Embodiment 1) An embodiment of the present invention will be described below in detail with reference to the drawings. Figure 1
(A) is a side sectional view of the forceps of the present invention, (B)
It is an end elevation of a pipe position fixing member. FIG. 2 is a cross-sectional view showing the state of attachment of the suction cup-shaped member.

In the forceps of the present invention, as shown in FIG. 1, a pipe 20, which is a suction tube for vacuuming, is passed through a handle 10 formed in a shape that is easy to grasp with a palm. The pipe 20 is rotatably held by the handle 20. A socket 21 is provided on the rear end side of the pipe 20. The peripheral surface of the socket 21 is threaded, and a throttle valve 22 is screwed thereto.

An air hose mounting end 23 is provided on the throttle valve 22 side. Air hose 2 at the air hose mounting end 23
By connecting 4 and connecting it to a vacuum pump 25 via an air hose 24, the inside of the pipe 20 can be evacuated.

Between the side facing the handle 10 of the socket 21 provided with the throttle valve 22 at one end and the rear end side of the handle 10,
A spring 26 provided in a spiral shape on the peripheral surface of the pipe 20 is interposed. Therefore, the spring 26
As shown in FIG. 1, the handle 10 is always in a state of being biased toward the left side of the drawing.

A pipe position fixing member 30 is fixed to the pipe 20 at a position facing the front end surface of the handle 10. As shown in FIG. 1B, the pipe position fixing member 30 is formed in a ring shape, and is passed from the pipe position fixing member 30 toward the peripheral surface of the pipe 20 in a state where the pipe 20 is passed through the ring. It is fixed by the set screw 30a.
A plurality of positioning pins 31 are provided on the end face of the pipe position fixing member 30 facing the handle 10 in a state protruding toward the face of the handle 10.

On the other hand, the pipe position fixing member 30 of the handle 10
An insertion hole 11 for inserting the protruding side of the positioning pin 31 is provided at a position corresponding to the positioning pin 31 on the end face side facing the. That is, when the positioning pin 31 of the pipe position fixing member 30 is aligned with the insertion hole 11 on the end face of the handle 10, the handle 10 is pressed against the pipe position fixing member 30 by the spring 26. Is inserted into the insertion hole 11,
The position of the pipe 20 with respect to the handle 10 is fixed.

The handle 10 is pulled backward against the spring pressure of the spring 26, and the handle 10 is rotated in a state where the positioning pin 31 is pulled out of the insertion hole 11, and the insertion hole 11 and the positioning pin 31 are moved to a position close to the rotation position. If the positioning pin 31 is inserted into the insertion hole 11 using the spring pressure of the spring 26, the position of the pipe 20 with respect to the handle 10 can be changed.

A suction cup-shaped member 40 is provided at the tip end of the pipe 20 having such a configuration. As shown in FIG. 2, the suction cup-shaped member 40 has a suction cup 41 that forms a suction surface 41a.
, A hollow chamber 42 provided behind the suction cup 41, and a suction pipe 43 communicating with the hollow chamber 42.
An engagement recess 44 is provided on the inner peripheral surface 43 a of the suction tube 43. The suction cup-shaped member 40 may be formed of an elastic material such as rubber or resin which does not adversely affect the living body even when it comes into contact with organs or tissues of the living body.

On the other hand, an adapter 27 is provided at the end of the pipe 20 for attaching the suction cup-shaped member 40. The adapter 27 is formed in a substantially nozzle shape having a suction passage 27a for suction penetrated at the center. The outer periphery of the distal end side of the adapter 27 is formed as a ring-shaped engaging projection 28. The engagement protrusion 28 of the adapter 27 provided on the distal end side of the pipe 20 and the engagement recess 44 provided on the inner peripheral surface 43 a of the suction pipe portion 43 of the suction cup-shaped member 40 are engaged with each other. The suction cup-shaped member 40 is removably attached to the main body.

Further, with the engagement concave portion 44 and the engagement convex portion 28 being engaged, the ring member 46 is fitted to a step 45 provided on the outer peripheral end of the suction cup-shaped member 40 on the suction pipe 43 side. Thereby, the suction tube 43 and the adapter 27 are securely fixed.

When removing the suction cup-shaped member 40, the ring member 46 is detached, and the suction pipe 43 side of the suction cup-shaped member 40 formed of a material such as soft rubber is twisted to thereby reduce the engagement. The engagement between the mating projection 28 and the engagement recess 44 is released.
Thus, in the configuration of the present invention, the suction cup-shaped member 40
Can be easily removed and discarded after the operation is completed, and it is easier to prevent infectious diseases based on reuse of equipment and the like than in the case of disinfecting and repeatedly using.

The suction cup-shaped member 40 has a shape of a suction surface,
Various types such as the size may be prepared according to the object to be used, so that an appropriate shape can be selected according to the operation content.

The forceps having such a configuration is used as follows. Before the operation, a suction cup-shaped member 40 having a shape corresponding to the content of the operation is selected and attached to the adapter 27. At the time of mounting, as described above, the engagement convex portion 28 and the engagement concave portion 44 are engaged with each other by pushing the distal end side of the adapter 27 into the suction tube portion 43 side end of the suction cup-shaped member 40, and furthermore, the ring The member 46 is fitted.

At the same time, with the suction cup-shaped member 40 fixed to the adapter 27, the air hose 24 is attached to the air hose attachment end 23 on the rear end side of the pipe 20, and the vacuum pump 25 connected to the air hose 24 is started. The throttle valve 22 may be initially closed.

For example, in an abdominal arthroscopic operation,
An opening for inserting forceps is provided in the abdomen, and a guide jig 50 as shown in FIG. The guide jig 50 includes a cylindrical portion 51 and a forceps receiving portion 52 provided on the rear end side of the cylindrical portion. Seal rubber 53 is provided in the forceps receiving portion 52.

Holding the forceps handle 10 with one hand, the suction cup-shaped member 40 side of the forceps of the present invention is passed through the tube portion 51 side, and is taken out from the end portion of the tube portion 51 to the affected part side. In this state, the seal rubber 53 in the forceps receiving portion 51 is in close contact with the side surface of the forceps pipe 20, and the gas injected from the forceps insertion side to inject the gas to facilitate the operation in the abdominal cavity during the operation in the abdominal cavity. Prevention is achieved.

The suction cup-shaped member 40 provided at the tip of the forceps is
Monita monitors the operation of the abdominal cavity. In such a situation, for example, when it becomes necessary to clamp the organ with forceps, the suction surface 41 of the suction cup-shaped member 40 is used.
The pipe 20 is inserted while checking with a monitor until a reaches the vicinity of the organ.

In a state where the suction surface 41a has come close to the organ,
The throttle valve 22 is gradually opened, and the inside of the pipe 20 is gradually reduced to a negative pressure. The internal space 41b and the hollow chamber 42 on the suction surface 41a side become negative pressure, so that the suction is performed on the organ surface.
In this state, the pipe 20 is pulled up little by little, and, for example, the organ is lifted to a required position and fixed in that state.

In this state, a part of the organ is cut off,
Alternatively, necessary treatment can be performed on other tissues or organs located below the fixed organ. Compared to the forceps of the conventional configuration, the forceps using the suction cup-shaped member 40 can reliably suck and hold the organ without slipping even if the organ is wet with body fluid, blood, or the like. FIG. 4 shows a state in which a part of the organ A is held by suction.

In particular, in the forceps of the conventional configuration, the body fluid on the organ surface causes slippage when the uneven blade of the holding portion of the forceps is clamped. The bodily fluid performs a sealing function so as to eliminate the gap with the organ surface, and unlike a forceps employing a clamping mechanism of a conventional configuration, on the contrary, the wetting of bodily fluid acts to further enhance the adsorption effect.

When the necessary treatment is performed in the above manner and the organ is no longer required to be fixed, the throttle valve 22 of the forceps is closed, so that the suction surface side naturally leaks from the suction surface side due to leakage from the suction surface side. The negative pressure is released, and the organ separates from the suction cup-shaped member 40. The unnecessary forceps are lifted by pulling the pipe 20 upward from the guide jig 50, so that the suction cup-shaped member 4 is removed.
0 may be output from the abdominal cavity.

When the organ held by the forceps is to be rotated and it is desired to rotate the held organ and view the situation on the side opposite to the side currently being moved to the monitor, the pipe 20 of the forceps is connected. Rotate. Small rotation, handle 1 with one hand
This can be done by rotating 0.

However, when the pipe 20 is inserted into the forceps receiving member 51, the position of the pipe 20 is fixed to some extent due to the close contact between the seal rubber and the peripheral surface of the pipe 20 and the mounting position of the air hose 24. And cannot perform complete free rotation.

Therefore, for example, when it is desired to hold the rotating member in a large rotating state, the handle 10 is not held by forcibly twisting, but the handle 10 is opposed to the spring 26 and the pipe position fixing member 30 is held. From the positioning pin 31
Is once removed from the insertion hole 11, and the pipe 20 is rotated so that the side to be viewed on the monitor comes out. In this state, the positioning pin 31 may be inserted into the insertion hole 11 again, and the rotating pin may be fixed. That is, in the forceps of the present invention, the relative rotation position of the pipe 20 with respect to the handle 10 is changed in this manner.

With the progress of surgical techniques, the opening to be opened on the body surface has been reduced, and in accordance with this, the forceps have also been actively reduced in size. As described above,
When used for arthroscopic surgery, the forceps must be configured to be large enough to pass through the inside of the cylindrical portion 51 of the guide jig 50.

For example, in an intraperitoneal operation, the guide jig 50
Since the cylindrical portion 51 is about 13 mm in diameter, the maximum outer diameter of the suction cup-shaped member 40 of the forceps of the present invention may be set to less than 13 mm. In the conventional configuration in which the holding portion is opened and closed with a mechanical configuration, it is extremely troublesome to manufacture such a small forceps. However, in the configuration of the present invention, the suction portion of the suction cup-shaped member 40 is basically used. Since the negative pressure is created by suction at the 41 side, there is basically no mechanical mechanism, and the size can be easily reduced accordingly.

(Embodiment 2) In the present embodiment, unlike the structure described in the first embodiment, a forceps capable of changing the size of the suction cup-shaped member is provided. The details will be described below with reference to the drawings. FIG. 5A is a side cross-sectional view of a forceps in which a suction area of a suction cup-shaped member is made variable,
(B) is a front view from the suction surface side of the suction cup-shaped member,
(C) is sectional explanatory drawing which shows the storage state of a suction cup-shaped member.

In the following description, the same members as those in the first embodiment are indicated by the same reference numerals for easy understanding.

In the forceps of this embodiment shown in FIG. 5, a pipe 20 as a suction means is rotatably held by the handle 10 in the same manner as described in the first embodiment. The handle 10 has a spring 26 interposed between the handle 10 and a retaining ring member 26a provided at one end of the pipe 20.
As shown in (A), the state is always biased toward the left side of the drawing. In the case shown in FIG. 5,
An opening 10a is provided in the center of the handle 10 so that the handle 10 can be more easily gripped by inserting fingers of the gripped hand.

A pipe position fixing member 30 is fixed to the pipe 20 so as to face the front end face of the handle 10. The pipe position fixing member 30 and the handle are fixed by the same mechanism as described in the first embodiment. 10 is connected via a positioning pin 31. Therefore, when changing the rotation position of the pipe 20, the handle 10 is pulled backward against the spring pressure of the spring 26, the positioning pin 31 is pulled out of the handle 10, and the handle 10 is rotated. The positioning pin 31 may be inserted into an insertion hole provided on the end face side of the handle 10 at a position close to the position.

The pipe 20 includes a pipe position fixing member 30.
Is provided with an air hose mounting end 23. By attaching one end of an air hose 24 connected to a vacuum pump 25 to the air hose attachment end 23, suction in the pipe 20 can be performed.

A mandrel member 60 is passed through the inside of the pipe 20 as a means for relatively moving the suction cup-shaped member 40 into and out of the pipe 20. The mandrel member 60 is threaded on the outer peripheral surface on the rear end side.
1 is screwed into a hole at the center of a rotating member 62 rotatably provided on the rear end face of the pipe 20. By rotating the rotating member 62 clockwise or counterclockwise,
The mandrel member 60 can be moved leftward or rightward within the pipe 20 toward the plane of FIG. Further, the amount of movement can be performed by increasing or decreasing the amount of rotation of the rotating member 62.

The mandrel member 60 whose one end is screwed by the rotating member 62 so that the amount of movement can be adjusted is as shown in FIG.
As shown in (A), the middle is supported through the center of a plug member 63 slidably provided in the pipe 20.
In supporting, a mandrel member 60 is provided with an O-ring to ensure a sealing property with the plug member 63.

The plug member 63 has both ends fixed to the mandrel member 60 by E-rings. In addition, the plug member 6
3 is provided with an O-ring 64 to secure a seal between the outer peripheral side of the plug member 63 and the inner peripheral side of the pipe 20, and
When the inside is made negative pressure, the negative pressure state is not broken.

A bush 65 is provided inside the pipe 20 from the rear end side, and a spring 66 is interposed between the bush 65 and the plug member 63. In this way, the plug member 63 is always urged toward the left side in FIG. 5.

The distal end side of the mandrel member 60 that has passed through the plug member 63 is attached to a leaf spring fixing member 70. The leaf spring fixing member 70 is, as shown in FIGS.
It is formed in the shape of a pipe having a central suction passage 71, and eight leaf springs 72 are provided at equal intervals along the circumferential direction of the outer peripheral surface. As shown in FIGS. 5A and 5B, the leaf spring 72 is formed in a slender shape curved outward.
A film 72a is stretched between the two to form a suction cup-shaped member 75. That is, the leaf spring 72 functions as a skeleton member constituting the suction cup-shaped member 75.

The film 72a may be made of a material such as a thin elastic rubber or a resin film. What is necessary is just to stretch on both sides of the leaf spring 72. Leaf spring 7
2 can prevent damage to organs and the like.

The leaf spring fixing member 70 is configured to be able to move left and right in the pipe 20 with the leaf spring 72 fixed to the outer peripheral side. The rear end side of the leaf spring fixing member 70 has a tubular portion 73 in which the suction passage 71 is extended in a tubular shape.
A mandrel mounting portion 74 is provided through the
4 is attached to the distal end side of the mandrel member 60. The leaf spring fixing member 70 also moves left and right in accordance with the left and right movement of the mandrel member 60.

That is, when the mandrel member 60 is fully extended to the left as viewed in the plane of FIG. 5, as shown in FIG.
The repulsive force of the leaf spring 72 itself is released, and the leaf spring 72
However, it opens like a trumpet as shown in FIG. On the other hand, when the mandrel member 60 is moved to the right side in FIG. 5, the leaf spring 72 that has been opened up to that point is stored in the pipe 20 as shown in FIG. 5C.

The forceps having such a configuration is used as follows. For example, a case in which a surgical operation is performed using the guide jig 50 under an arthroscopic view will be described. As described in the first embodiment, the guide jig 50 is passed through a hole provided in the abdomen. The pipe 20 containing the leaf spring 72 as shown in FIG. 5C is passed through the guide jig 50. With the tip of the pipe 20 protruding from the tip of the tubular portion 51, the rotating member 62 is rotated to move the mandrel member 60, and FIG.
The leaf spring 72 is opened as shown in FIGS.

While monitoring with a monitor, the suction surface 75a of the suction cup-shaped member 75 with the leaf spring 72 opened is brought close to the vicinity of the organ to be gripped, and in this state, the internal space 75b on the suction surface 75a side is reduced to a negative pressure. Form and adsorb organs. When a negative pressure is applied to the suction surface 75a side, the vacuum pump 25 connected via the air hose 24 is started from the air hose mounting end 23 side of the pipe 20 to suck the inside of the pipe 20 to a negative pressure.

The air on the suction surface 75a side passes through the suction passage 71 of the leaf spring fixing member 70 as shown by an arrow in FIG. 5A, and an opening (not shown) provided on the side wall of the tubular portion 73. Through the pipe 20 to be sucked. The organ is sucked and gripped by the suction cup-shaped member 75 using the negative pressure thus formed.

When the suction is no longer necessary, if the suction is stopped by, for example, stopping the vacuum pump 25, the negative pressure is eliminated by the natural leak from the suction surface 75a which has been sucking the organ until then. The organ is sucker-like member 75
Can be separated from When the forceps are taken out of the abdominal cavity, the rotating member 62 is rotated, the mandrel member 60 is moved, and the leaf spring 72 constituting the suction cup-shaped member 75 is moved to the position shown in FIG.
The pipe 20 may be pulled out of the guide jig 50 while being stored in the pipe 20 until the state shown in FIG.

FIG. 5A shows a state in which the leaf spring 72 is fully extended from the end of the pipe 20, but by adjusting the movement of the mandrel member 60, the leaf spring 72 is adjusted. You can also adjust the way you open. If a material having contractility is used for the film 72a itself, even if the opening of the leaf spring 72 is large or small, the film 72a between the leaf springs 72 does not loosen, so that the suction is prevented. Not be.

In the forceps of the present invention having the above-described structure, the leaf spring 72 and the film 72a constituting the suction cup-shaped member 75 can be put in and taken out of the pipe 20, so that the suction surface 75a can be viewed from the beginning, for example, by a mirror. It can be larger than the diameter of the cylindrical portion of the guide jig used in the lower surgery.

Further, by adjusting the degree of opening and closing of the leaf spring 72 from the pipe 20, the state of opening of the suction surface can be adjusted. It is possible to perform the suction grip according to.

(Embodiment 3) In this embodiment, a modified example of the forceps having a variable suction area described in Embodiment 2 will be described in detail with reference to the drawings. FIG.
It is a sectional side view of a forceps in the state where a suction cup-shaped member was stored.

In the forceps of the present embodiment, a pipe moving member 81 is movably screwed to a gripping member 80 formed in a substantially rod shape as a relative moving means for moving the suction cup-shaped member and the pipe. The gripping member 80 and the pipe moving member 81 are formed such that a threaded portion 8 is formed on the inner peripheral surface from one end surface of the gripping member 80.
The pipe moving member 8 is inserted into the screw hole 83 formed by providing the
1 is provided so as to be movable by screwing a threaded portion 82b provided on the outer peripheral surface.

On the rear end side of the pipe moving member 81, a rotary knob 84 having a suction path 84a formed at the center is provided. The rotary knob 84 is provided with an air hose mounting end 23 so as to communicate with the suction path 84a.

At the other end of the holding member 80, an outer cylindrical member 85
Is provided with one end thereof penetrating therethrough. Through both the outer cylinder member 85 and the pipe moving member 81,
A pipe 86 is passed through. The pipe end side of the pipe 86 that has passed through the pipe moving member 81 communicates with a suction path 81a provided in the pipe moving member 81, and the suction path 81a communicates with a suction path 84a of a rotary knob 84. Will be communicated.

As shown in FIG. 6, the pipe 86 may be fixed to the pipe moving member 81 by, for example, screwing a screw 87a from the outer peripheral side of the pipe moving member 81. Similarly, the fixing of the outer cylinder member 85 to the gripping member 81
What is necessary is just to screw in 7b from the outer periphery side of the holding member 80, and to fix it.

At the distal end of the outer cylinder member 85, a ring member 8 is provided.
8 are provided. The suction pipe portion 89 a of the suction cup-shaped member mounting member 89 penetrates through the ring member 88, and the pipe end of the penetrated suction pipe section 89 a is fixed to the pipe end of the pipe 86. In this way, the suction passage 89 b through which the suction cup-shaped member mounting member 89 passes is communicated with the pipe 86. An annular convex portion 89c is formed in the middle of the outer periphery of the sucker-like member attaching member 89, and both ends of the convex portion of the ring-shaped convex portion are formed on inclined surfaces 89d and 89e. Behind the inclined surface 89e, a sucker-like member mounting portion 89f for screwing and mounting a thick portion of the suction-like member 100 is formed.

The distal end side of the ring member 88 is formed as a leaf spring mounting portion 88a formed in an octagonal cross section.
Eight substantially rectangular leaf spring mounting plates 88b are screwed in accordance with the leaf spring mounting portions 88a. A leaf spring 90 formed in a substantially elongated shape is screwed to each leaf spring mounting plate 88b. As shown in FIG. 6, the leaf spring 90 includes an annular convex portion 8 provided on the outer periphery of the suction cup-shaped member attaching member 89.
A bent portion 90a is formed substantially along the outer periphery of 9c, a concave portion 90b is formed ahead of the bent portion 90a, and a horizontal portion 90c is formed from the concave portion 90b toward the tip.

Although the concave portion 90b is formed in a V-shaped cross section in the case shown in FIG. 6, the lower surface of the concave portion 90b can move smoothly along the inclined surfaces 89d and 89e provided on the annular convex portion 89c. Any shape may be used as long as it has a shape. Further, the convex portion may be provided by a separate member below the leaf spring 90 without bending the leaf spring 90 itself.

In the forceps of this embodiment configured as described above, turning the rotary knob 84 left or right causes the pipe moving member 81 to which the rotary knob 84 is fixed.
Moves to the left or right toward the plane of FIG. 6 while being screwed into the screw hole 83 of the gripping member 80.

By moving the pipe moving member 81 to the left or right, the pipe 86 passing through the pipe moving member 81 also moves to the left or right, and the pipe 86
The suction cup-shaped member mounting member 89 fixed at 9a moves to the left or right.

In the case shown in FIG. 6, the suction cup mounting member 8
9 shows a state in which 9 is fully drawn to the right of the paper surface of FIG. In this state, the suction cup-shaped member 100 provided on the suction cup-shaped member mounting portion 89f of the suction cup-shaped member mounting member 89 is crushed by the horizontal portion 90c of the leaf spring 90 as shown in FIG. The leaf spring 90 is provided on the suction cup-shaped member 1.
It will function as a pressing member for 00.

In this state, when the rotary knob 84 is rotated to gradually move the pipe moving member 81 to the left, the lower surface of the concave portion 90b of the leaf spring 90 goes up along the inclined surface 89e of the annular convex portion 89c. Horizontal portion 90c of leaf spring 90
The side is open. When the leaf spring 90 is thus opened, the crushed leaf spring sucker-like member 100 attempts to return to its original shape by its own elastic force, as shown in FIG. 7A. And so on.

Further, when the sucker-like member mounting member 89 is pulled to the right, as shown in FIG.
00 is completely released from the horizontal portion 90c of the leaf spring 90 and returns to the shape of the suction cup-shaped member 100 as shown by the solid line.
The broken line display in the figure shows the state of the suction cup-shaped member 100 in FIG. 7A for comparison. Furthermore, FIG.
In (B), the thick portion of the suction cup-shaped member 100 is omitted for easy viewing.

Further, when the suction cup-shaped member mounting member 89 is fully moved to the right side, as shown in FIG.
In this case, the horizontal portion 90c is flat on the annular convex portion 89c, and the suction cup-shaped member 100 is in the maximum open state.

In order to use the forceps of the present embodiment having such a configuration, the following is performed. That is, for example, in the case of the arthroscopic surgery using the guide jig 50, the suction cup-shaped member 100 as shown in FIG.
In the state of being crushed in the internal space of c, the tube is passed through the tube portion 51 in this state. The degree to which the bent portion 90a of the leaf spring 90 protrudes from the end of the tubular portion 51 is determined by the suction member mounting member 89.
, The rotary knob 84 is rotated to pull it in fully.

By fully pulling in, FIG.
As shown in FIG. 8, through the state shown in FIG.
Is fully opened. In this state, the leaf spring 90 is in a state substantially along the outer periphery of the suction cup-shaped member attaching member 89 and does not protrude outward. Therefore, even when the forceps are moved in the abdominal cavity, the leaf spring 90 is not protruded. There is no risk of damaging the surrounding organs.

With the suction surface 100a of the suction cup-shaped member 100 fully opened in this way, the vacuum pump 25 connected via the air hose 24 attached to the air hose attachment end 23 is started to start the pipe 86, the suction passage 89b. Then, the suction is performed with the suction surface 100a side set to a negative pressure. Suction surface 1
By bringing the 00a closer to the surface of the organ holding the organ, the organ is sucked by the suction cup-shaped member 100. After holding the organ in a state of being sucked to the suction cup-shaped member 100 and performing a required treatment, the suction is stopped by, for example, stopping the vacuum pump 25 or the like.
Adsorption surface 100a naturally due to leak on adsorption surface 100a side
The side negative pressure is released and the organ moves away from the suction cup 100.

In order to pull up the unnecessary forceps, the rotary knob 84 is again rotated, and the sucker-like member attaching member 8 is rotated.
9 is extruded, and through the course of FIGS. 7B and 7A, FIG.
To the state shown in. That is, the suction cup-shaped member 100 is crushed. In this state, the forceps may be pulled out from the cylindrical portion 51 of the guide jig 50.

As described in the first embodiment, the suction cup-shaped member 100 itself may be detachably attached so as to be fitted into the suction cup-shaped member mounting portion 89f of the suction cup-shaped member mounting member 89. , Can be easily removed and discarded. Also, with the suction cup-shaped member 100 attached,
When preparing for an operation, as shown in FIG. 6, if the suction cup-shaped member 100 is kept crushed for a long time, the restoring force of the suction cup-shaped member 100 may be deteriorated.
For example, as shown in FIG.
May be released from the pressing force of the leaf spring 90 and the leaf spring 90 may be kept flat.

The present invention is not limited to the configuration described in the above embodiment, and may be variously modified without departing from the gist of the present invention.

For example, in the above-described embodiment, the configuration has been described in which the pipe 20 penetrates through the inside of the handle body forward and backward with respect to the handle, but a ring-shaped gripping member is provided on the side of the handle. Even if the pipe 20 is configured to pass through the ring-shaped gripping member, it does not matter. The spring may be interposed between the holding member and the socket.

The configuration of the handle shown in the first and second embodiments may be a holding member formed in a ring shape around the pipe as shown in the third embodiment. Furthermore, the gripping member described in Embodiment 3 is different from Embodiment 1 in that
The handle may be configured as shown in FIG.

In the above-described embodiment, the means for adjusting the negative pressure of the suction cup-shaped member with the throttle valve or the like from the vacuum pump has been described. However, as shown in FIG. An air hose 24 through a simple tube 12,
The end of the tube pressing member 14 provided on the lever 13 is pressed against the tube 12 by communicating with the vacuum pump 25. By pulling or releasing the lever 13 and moving the lever 13 in either direction of the double arrow, the tube 12 can be crushed or opened to start and stop the suction operation only with the lever. You may.

In the above-described embodiment, a rigid pipe is used as the suction means. However, a flexible suction pipe having a certain degree of rigidity may be used for at least a part thereof.

In the description of the second embodiment, the pipe 20
Is fixed, and the mandrel member 60 passing through the pipe 20 is moved back and forth to move the suction cup-shaped member 75 in and out of the pipe.
May be fixed, and the pipe 20 may be moved.

[0087]

According to the forceps of the present invention, the grip of an organ or the like is gripped by suction. Therefore, unlike the forceps of the conventional configuration such as slipping at the time of pinching due to the wetting of body fluid or the like on the organ surface, the forceps have a slip. It can be gripped without doing.

By adopting the structure of gripping by suction, unlike the forceps of the conventional configuration in which it is difficult to grip a flat portion, for example, the present invention can be applied to a flat portion or a spherical portion regardless of the shape of the suction surface. The forceps can be grasped.

Since the suction by the sucker-shaped member is a structure in which the organ is sucked by the surface, it is not a structure in which the organ is gripped at a point unlike the case where the organ is gripped by the uneven blade of the holding portion. There is no danger that the organs will be accidentally crushed due to the concentration of force at the contact point.

In addition, at the time of suction, the suction surface of the suction cup-shaped member widely contacts the organ surface.
A large organ such as the stomach and the liver, which cannot be performed by the forceps of the conventional configuration that is gripped by the uneven blade, can be sucked and moved, or pressed by the suction surface.

The forceps of the present invention employs a structure in which a skeletal member such as a leaf spring and a membrane constituting the sucker-like member and a membrane are put in and taken out of the pipe. The diameter of the guide jig to be used can be larger than the diameter of the cylindrical part. In addition, by adjusting the opening degree of the suction member by adjusting the insertion and removal of the skeletal member, it is possible to perform appropriate gripping according to the size of the organ to be gripped even during surgery.

In the forceps of the present invention, the suction cup-shaped member can be put in and taken out of the internal space surrounded by the pressing member. It can be larger than the part diameter.

[Brief description of the drawings]

FIG. 1A is a side sectional view of a forceps shown in Embodiment 1 of the present invention, and FIG. 1B is an end view of a pipe position fixing member.

FIG. 2 is a partial cross-sectional view showing a mounting state of a suction cup-shaped member.

FIG. 3A is a side view of a guide jig, and FIG. 3B is a plan view of the guide jig.

FIG. 4 is an explanatory cross-sectional view showing a state where an organ is gripped by a suction cup-shaped member.

FIG. 5A is a side sectional view of a forceps according to a second embodiment of the present invention, FIG. 5B is a front view showing a state where a suction surface is viewed from the front, and FIG. FIG. 3 is an explanatory sectional view showing a state in which is stored in a pipe.

FIG. 6 is an explanatory sectional view showing a state in which a suction cup-shaped member is crushed in the forceps according to the third embodiment of the present invention.

7 (A) and 7 (B) are cross-sectional explanatory views showing the process of releasing the state of crushing the suction cup-shaped member from the state where the suction cup-shaped member shown in FIG. 6 is crushed.

FIG. 8 is an explanatory sectional view of the forceps showing a state in which the crushing of the suction cup-shaped member is completely eliminated.

FIG. 9 is a partial explanatory view showing a modification of the handle of the forceps.

FIG. 10 is a plan view showing a forceps of a conventional configuration having a mechanical chuck mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pipe 2 Mandrel 3a, 3b Holding part 4a, 4b Supporting point 5a, 5b Blade 10 Handle 10a Opening 11 Insertion hole 12 Tube 13 Lever 14 Tube pressing member 20 Pipe 21 Socket 22 Throttle valve 23 Air hose mounting end 24 Air hose 25 Vacuum pump 26 Spring 27 Adapter 27a Suction path 28 Engagement projection 30 Pipe position fixing member 30a Screw 31 Positioning pin 40 Suction cup 41a Suction surface 41b Internal space 41 Suction cup 42 Hollow chamber 43 Suction pipe 43a Inner circumference 44 Engagement recess 45 Step 46 Ring-shaped member 50 Guide jig 51 Cylindrical part 52 Forceps receiving part 53 Seal rubber 60 Mandrel member 61 Threaded part 62 Rotating member 63 Plug member 64 O-ring 65 Bush 66 Spring 70 Leaf spring fixing member 71 Suction path 72 Leaf spring 7 a membrane 73 tubular portion 74 mandrel mounting member 75 sucker-like member 75a suction surface 75b internal space 80 gripping member 81 pipe moving member 82a threaded portion 82b threaded portion 83 screw hole 84 rotary knob 85 outer cylinder member 86 pipes 87a, 87b screw 88 Ring member 88a Leaf spring mounting part 88b Leaf spring mounting plate 89 Sucker-shaped member mounting member 89a Suction pipe part 89b Suction path 89c Annular convex part 89d, 89e Inclined surface 89f Sucker-shaped member mounting part 90 Leaf spring 90a Bent part 90b Recess 90c Annular Convex part 100 Sucker-shaped member 100a Suction surface

Claims (5)

[Claims] 1. A forceps for gripping an object to be gripped, such as an organ or a tissue in a body in an operation, wherein a suction cup-shaped member for adsorbing the object to be gripped, and an internal space on a suction surface side of the suction cup-shaped member are subjected to negative pressure. Forceps having suction means for performing the suction. 2. The forceps according to claim 1, wherein the suction means is formed in a pipe connectable to a suction source, and the pipe communicates with the internal space through a penetrating portion provided in the suction cup-shaped member. Forceps. 3. The forceps according to claim 2, wherein the suction cup-shaped member and the pipe are relatively movable so that the suction cup-shaped member enters and exits the pipe. forceps. 4. The forceps according to claim 3, wherein the suction cup-shaped member has a skeleton member that opens in a trumpet shape when the suction cup-shaped member is protruded from inside the pipe, and a film that covers between the skeleton members. A forceps characterized in that: 5. The forceps according to claim 1, wherein the forceps has a pressing member that presses the suction cup-shaped member from the surroundings, and the suction cup-shaped member and the pressing member are the suction cup-shaped member. Is configured to be relatively movable so that the ingress and egress into and out of an internal space surrounded by the pressing member.