JPH09299374A - Abdominal cavity opening implement for use in operation using laparoscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure the field of view of a laparoscope by depressurizing an internal organ and use a treatment implement at the same time. SOLUTION: This abdominal cavity opening implement has a plurality of pressing rods 6 which are inserted from a small incision in the abdominal cavity and open to press the inside of the abdominal cavity while being inserted. At least one of the pressing rods 6 is a hollow pipe 6A into which a treatment implement 7 can be inserted. The treatment implement 7 is inserted into the pressing rod 6 of the hollow pipe 6A for treatment, and an internal organ or the like is depressurized to secure a field of view inside the abdominal cavity.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an abdominal cavity expansion used for performing a procedure while pressing the internal organs, that is, excluding the internal organs to secure a visual field in the abdominal cavity during an operation using a laparoscope. Regarding equipment.

[0002]

2. Description of the Related Art A surgical method using a laparoscope is used for a surgical operation in which the abdominal wall is incised into a small incision to remove the internal organs. This procedure does not make a large incision in the abdominal wall as in normal surgery.
Several small holes are incised in the abdominal wall, and a laparoscope or a surgical treatment tool is inserted into the abdominal cavity through the incised small hole to perform surgery. To expand the abdominal cavity, pressurized gas is pressed into the abdominal cavity or a plurality of points on the abdominal wall are lifted to widen the abdominal wall and internal organs.
However, depending on the body type of the patient, the abdominal cavity may not be expanded widely. A patient with a narrowed abdominal cavity is likely to occur in an obese patient who has a large amount of fat. If the abdominal cavity is narrow, the laparoscope inserted into the body cannot secure a sufficient field of view for surgery. In addition, there is an adverse effect that the treatment tool cannot be inserted in the optimum position.

In order to prevent these adverse effects, a device for expanding the abdominal cavity shown in FIG. 1 has been developed. The abdominal cavity expansion instrument of this figure is provided with a pressure eliminator 2 at the tip of the pipe 1 so that it can be expanded. The displacement blade 2 is opened and closed by an operation from the rear end of the pipe 1. The abdominal cavity expansion device is inserted into the abdominal cavity 3 in the body through the incised small hole with the exclusion blade 2 closed. After the insertion, the exclusion blade 2 is expanded to exclude the internal organs 4 such as the intestine and the stomach that interfere with the procedure, and the visual field is secured.

[0004]

The device for expanding the abdominal cavity shown in FIG. 1 can secure the field of view by excluding the internal organs 4 with the expanded excretion blades 2. However, since this instrument has only a single function of excreting the internal organs 4, another abdominal wall 5 is incised for inserting the treatment instrument 7, and the treatment instrument 7 is inserted through the incised small hole to make an incision. Need to clot or aspirate secretions. The present invention was developed for the purpose of solving this drawback, and an object of the present invention is to perform surgery using a laparoscope that can be used together with a treatment tool while excluding internal organs and the like to secure a visual field. It is to provide a device for expanding the abdominal cavity.

[0005]

A device for expanding abdominal cavity for use in a surgery using a laparoscope according to claim 1 of the present invention comprises:
The abdominal wall 5 has a plurality of pressing rods 6 that are inserted through the incised small holes and are expanded in the inserted state to press the inside of the abdominal cavity 3. At least one pressing rod 6 is a hollow pipe 6A into which the treatment tool 7 can be inserted. Hollow pipe 6A
The treatment tool 7 is inserted into the pressing rod 6 of the
The expanded pressing rod 6 excludes internal organs and the like to secure a visual field in the abdominal cavity 3.

Further, the abdominal cavity expanding instrument used for surgery using a laparoscope according to claim 2 of the present invention is inserted through a small hole in which the abdominal wall 5 is cut, and is expanded in the inserted state to expand the abdominal cavity 3. It has a plurality of pressing rods 6 for pressing the inside. The pressing rod 6 is a hollow pipe 6A into which the treatment instrument 7 can be inserted.
The treatment tool 7 is inserted into the hollow pipe 6A for treatment, and the expanded pressing rod 6 excretes the internal organs to secure the visual field in the abdominal cavity 3.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. However, the embodiments described below exemplify the abdominal cavity expanding instrument for embodying the technical idea of the present invention, and the present invention is the abdominal cavity expanding instrument used for surgery using a laparoscope. The configuration of is not specified below.

Further, in this specification, in order to facilitate understanding of the claims, the numbers corresponding to the members shown in the embodiments are referred to as "the claims column" and "to solve the problems". It is added to the members shown in the column of "means". However, the members described in the claims are not limited to the members of the embodiments.

The abdominal cavity expanding device used in the operation using the laparoscope shown in FIGS. 2 and 3 is inserted into the abdominal cavity 3 through a small hole in the abdominal wall 5, and the internal organs are squeezed out to secure the visual field of the abdominal cavity 3. It is equipped with three pressing rods 6. In the figure, the pressing rod 6 at the center is a hollow pipe 6A in which a treatment tool 7 can be inserted for treatment while the internal organs and the like are excluded.
However, the present invention does not specify the number of pressing rods 6 or the positions of the hollow pipes 6A as these. For example, 5 push rods
It is also possible to use a book, and the second and fourth pressing rods from the right may be hollow pipes.

The pressing rod 6 of the hollow pipe 6A has a curved tip portion. The hollow pipe 6A of this shape expands the abdominal cavity 3 by excluding the internal organs and the like at the curved portion, as shown in FIGS. In this state, the treatment tool 7 is inserted into the hollow pipe 6A, the treatment tool 7 is projected from the tip of the hollow pipe 6A, and a treatment such as peeling is performed. The abdominal cavity expansion device shown in FIG. 4 is inserted into the abdominal cavity 3 through a small hole cut in the abdominal wall 5, and is greatly curved so that the intestine or the like can be excluded by the curved portion for treatment. Curved hollow pipe 6
The tip of A has a bending angle (α) of 0 to 120 with respect to the rear end.
I have a degree. As shown in FIG. 5, in the abdominal cavity expanding device that is inserted into the abdominal cavity 3 from the side of the body, the radius of curvature of the curved portion is increased to reduce the bending angle (α) with respect to the rear end portion. The abdominal cavity expansion instrument used for surgery using the laparoscope of the present invention is not necessarily limited to a curved hollow pipe.
This is because even a straight hollow pipe abdominal cavity expanding device can be treated by projecting the treatment tool from the tip while excluding the internal organs.

The hollow pipe 6A used for the central pressing rod 6 is designed to have an inner diameter of 3 to 10 mm so that the treatment instrument 7 can be inserted therethrough. The pressing rod 6 is made of metal such as stainless steel, but the hollow pipe 6A is most preferably made of stainless steel. However, the pressing rod 6 and the hollow pipe 6
It is also possible to dispose A of plastic, Teflon, or a combination of these with metal as a disposable material.

The abdominal cavity expanding device used in the operation using the laparoscope of the present invention does not specify the treatment tool to be inserted into the hollow pipe 6A. As the treatment tool, for example, as shown in FIG. 6, an electrode whose surface is insulated, or, although not shown, scissors or the like which is inserted into the hollow pipe 6A to sandwich the local portion of the internal organs at its tip is used. The electrode shown in FIG. 6 has a coil spring of a stainless wire 9 built in the center of an insulating hose 8, and is freely deformed when it is inserted into the hollow pipe 6A. The head of the electrode projects from the tip of the insulating hose 8. The head of the electrode can be used in a hook shape, a spatula shape, a spherical shape, or the like. The electrode of this structure is inserted into the hollow pipe 6A, and the tip of the electrode is projected from the hollow pipe 6A. The electrodes protruding from the hollow pipe 6A can be energized to perform an operation to peel off the internal organs or coagulate the affected area. The electrode serving as a coil spring has a feature that it can be smoothly inserted into the curved hollow pipe 6A. The gripping cans, scissors, etc. used as a treatment tool also use those which can be freely deformed and inserted into the hollow pipe 6A. However, the abdominal cavity expansion device using a straight hollow pipe can be used by inserting a treatment tool that cannot be deformed into the hollow pipe.

In order to fix the treatment instrument 7 inserted in the hollow pipe 6A, the central pressing rod 6 has a set screw 10 at the rear end.
Is provided. The set screw 10 is threaded through the hollow pipe 6A in the radial direction. The set screw 10 presses the treatment instrument 7 with the tip of the screw to stop the treatment instrument 7 from rotating or moving in the axial direction.

Further, in the abdominal cavity expanding device shown in FIG. 2, the rear end of the hollow pipe 6A is branched so that the hollow pipe 6A can be sucked, and the on-off valve 12 is connected to the middle of the branch passage 11. The branch passage 11 is connected to a vacuum source (not shown) via a flexible hose or the like. When the on-off valve 12 is opened, the vacuum source can suck the foreign matter in the abdominal cavity from the tip of the hollow pipe 6A. When opening the on-off valve 12, the hollow pipe 6
The rear end of A is closed airtightly. The rear end of the hollow pipe 6A is
For example, it can be airtightly closed by a thick insulating hose attached to the rear end of the outer circumference of the electrode. However, it is also possible to pull out the electrode from the hollow pipe 6A and close the rear end of the hollow pipe 6A with another lid member.

The pressing rods 6 on both sides are connected to the curved portion of the central pressing rod 6 which is a hollow pipe 6A so as to be opened and closed. The pressing rods 6 on both sides are connected to the central pressing rod 6 so that both ends can be rotated. The connecting portions of the pressing rods 6 on both sides are connected to the central pressing rod 6 via a rotary shaft 13, as shown in the enlarged view of FIG. The rotating shaft 13 is inserted and fixed to a rib 14 fixed to the central pressing rod 6. Push rods 6 on both sides
Has through-holes at both ends through which the rotary shaft 13 is rotatably inserted.

The pressing rods 6 on both sides are curved so as to follow the central pressing rod 6 in the closed state, that is, the same shape as the central pressing rod 6. The pressing rods 6 on both sides are opened and closed by a link 15. As shown in FIG. 7, the link 15 has a tip extending to the middle of the pressing rods 6 on both sides and a rear end extending to the rear end of the central pressing rod 6. The link 15 is movable in the axial direction, and is inserted through the guide pipe 16 so as to be movable in the axial direction.

The tip of the guide pipe 16 is fixed to the bottom surface of the central pressing rod 6, as shown in the bottom view of FIG. The link 15 protruding from the tip of the guide pipe 16
Are juxtaposed side by side, and their tips are connected to the pressing rods 6 on both sides. The links 15 protruding side by side push and open the middle of the pressing rods 6 on both sides in the direction indicated by the arrow in the figure. When the link 15 is pulled, the pressing rods 6 on both sides are pulled in the direction opposite to the arrow to be closed, and are parallel to the central pressing rod 6.

As shown in FIG. 3, the rear end of the guide pipe 16 is fixed to the rear end of the central pressing rod 6 via a fixed pipe 17. A collar 18 is fixed to the rear end of the link 15 protruding from the fixed pipe 17. A coil spring 19 which is a push spring is provided between the collar 18 and the fixed pipe 17. The coil spring 19 is inserted into the link 15 and pulls the link 15 in the direction of pulling out the link 15 from the fixed pipe 17 via the collar 18. Link 15
A stopper screw 20 is screwed into the fixed pipe 17 in the radial direction in order to fix the screw in place. The stopper screw 20 is screwed in when fixing the link 15 and loosened when moving the link 15. When the stopper screw 20 is screwed in, the tip of the stopper screw 20 clamps the link 15 and stops the link 15. In this structure, when the stopper screw 20 is loosened, the coil spring 19 pulls back the link 15 via the collar 18, and the pressing rods 6 on both sides are closed. When opening the pressure rods 6 on both sides, the collar 18 is pressed to compress the coil spring 19, the link 15 is pushed into the guide pipe 16, and the pressure rods 6 on both sides are pressed by the tip of the link 15 in the direction of the arrow in FIG. .

As described above, the abdominal cavity expanding device that elastically presses the link 15 with the coil spring 19 can be conveniently used because the stopper screws 20 can be loosened and the pressing rods 6 on both sides can be easily closed. it can. However, the coil spring is not always necessary, and the link 15 is pulled or pushed in to push the push rods 6 on both sides.
You can also open and close.

FIGS. 8 and 9 show a device for expanding the abdominal cavity in which the pressing rod 6 is openably and closably connected to the hollow pipe 6A. The abdominal cavity expansion device shown in these figures is a hollow pipe 6A.
Is a shape that allows the treatment tool 7 to be used in an ideal state, and the pressing rod 6 has an ideal shape for pressing an internal organ or the like.

In the abdominal cavity expanding device shown in FIG. 8, the distal end portion of the hollow pipe 6A is curved upward and the pressing rod 6 is curved downward. The abdominal cavity expanding device of this shape expands the abdominal cavity 3 by excluding the internal organs and the like with the pressing rod 6, and in this state, the hollow pipe 6A.
The treatment tool 7 is inserted into the hollow tube 6A, the treatment tool 7 is projected from the tip of the hollow pipe 6A, and a treatment such as peeling is performed.

The device for expanding the abdominal cavity shown in FIG.
The coil spring 21 is connected to the tip of A, and the coil spring 2
A tip tube 22 is connected to the tip of the tube 1. Coil spring 21
Can be freely bent back and forth and left and right by the link 15. The hollow pipe 6A deformed by the coil spring 21 has a feature that the treatment instrument 7 inserted therein can be moved to an optimum position.

The coil spring 21 has a guide ring 23 fixed to the surface thereof for guiding the link 15 through the link 15. The guide rings 23 are fixed to the front and rear and the left and right of the coil spring 21 at regular intervals. The guide ring 23 moves the link 15 inserted therein along the coil spring 21. The link 15 has a front end connected to the front end tube 22 and a rear end connected to a drive lever 24. The link 15 inserted in the guide ring 23 and arranged along the front and rear of the coil spring 21 bends the coil spring 21 back and forth. The links 15 arranged on the left and right of the coil spring 21 bend the coil spring 21 left and right. The link 15 along the front and rear of the coil spring 21 pulls one and pushes the other to bend the coil spring 21 back and forth. The left and right links 15 also pull one and push the other to bend the coil spring 21 left and right.

One of the links 15 is pulled by the drive lever 24 and the other is pressed. As shown in FIGS. 8 and 9, the drive lever 24 is connected to the upper surface of the rear end of the hollow pipe 6A so as to be rotatable in a horizontal plane. The drive lever 24 fixes a guide pulley coaxially with a rotating shaft connected to the hollow pipe 6A. The guide pulley is rotated together with the drive lever 24. A stopper screw is screwed into the rotating shaft to stop the guide pulley at a predetermined rotation position. The stopper screw is a wing nut. Loosen the stopper screw and rotate the drive lever 24. Screw the stopper screw to stop the drive lever 24 from rotating.

The drive lever 24 is mounted on the rotary shaft in two stages, one for bending the coil spring 21 back and forth and one for bending the coil spring 21 left and right. Each drive lever 24 can rotate independently. The lower drive lever 24 connects the two links 15 arranged along the front and rear of the coil spring 21. The two links 15 are hung on both sides of the guide pulley and connected to the drive lever 24. The upper drive lever 24 is arranged along the left and right of the coil spring 21.
The links 15 of the book are connected. The two links 15 are hung on both sides of the guide pulley and connected to the drive lever 24. When the drive lever 24 is rotated by loosening the stopper screw, one link 15 is pulled and the other link 15 is pushed out. Therefore, the lower drive lever 2
When 4 is rotated, the coil spring 21 is bent back and forth. When the upper drive lever 24 is rotated, the coil spring 2
1 is bent left and right.

The device for expanding the abdominal cavity shown in the figure is a hollow pipe 6A.
The coil spring 21 is a part of which can be bent.
The foldable hollow pipe 6A may have a structure in which the coil spring 21 is connected so that a plurality of fold cylinders can be bent forward, backward, leftward and rightward, although not shown. The folding cylinder is
Connect even numbered connection points so that they can be bent back and forth,
The odd numbered connection points can be connected so that they can be bent left and right, and can be bent back and forth and left and right. The length of the bent cylinder is 5
The length is set to 10 mm, and the connection portion is connected so that it can be bent. On the outer circumference of the bent cylinder, like the coil spring 21,
The guide rings 23 for guiding the links are fixed to the front, rear, left and right.

When the bendable hollow pipe 6A is inserted into the abdominal cavity, it has a shape along the pressing rod 6, and the folded pressing rod 6 and the hollow pipe 6A are inserted into the abdominal cavity together. After being inserted into the abdominal cavity, the hollow pipe 6A is bent back and forth and left and right, the tip is moved to a predetermined position, and the pressing rod 6 is opened to press the internal organs.

The hollow pipe 6A is designed, for example, to have an inner diameter of 3 to 10 mm so that the treatment instrument 7 can be inserted therethrough. The hollow pipe 6A and the pressing rod 6 are made of stainless steel.
However, the pressing rod 6 and the hollow pipe 6A can be made disposable by being made of plastic, Teflon, or a combination of metal and these.

The abdominal cavity expansion device shown in FIGS. 8 and 9 does not specify the treatment tool to be inserted into the hollow pipe 6A, like the abdominal cavity expansion device shown in FIG. The treatment tool may be the same as the abdominal cavity expansion device shown in FIG.

In order to fix the treatment instrument 7 inserted in the hollow pipe 6A, a set screw (not shown) is provided at the rear end of the hollow pipe as in the abdominal cavity expanding device of FIG. The set screw is threaded through the hollow pipe 6A in the radial direction. The set screw presses the treatment instrument 7 with the tip of the screw to stop the treatment instrument 7 from rotating or moving in the axial direction.

Further, the abdominal cavity expanding device shown in FIG. 8 is not shown, but like the abdominal cavity expanding device shown in FIG.
It is also possible to branch the rear end of the hollow pipe 6A and connect an on-off valve in the middle of the branch path so that suction can be performed with A. The branch passage is connected to a vacuum source via a flexible hose or the like. Furthermore, the hollow pipe can be inserted into a vinyl tube or the like. Also, a plurality of suction pipes can be provided along the hollow pipe. A device having a plurality of suction pipes can be used so that water is supplied from one of the suction pipes and suctioned by another suction pipe.

FIG. 9 is a bottom view of the abdominal cavity expanding device shown in FIG. The abdominal cavity expansion device shown in the figure has three pressing rods 6 connected to its tip. The pressing rod 6 is composed of one central rod that is not opened and closed and two pressing rods 6 that are opened and closed on both sides thereof. The two pressing rods 6 that are opened and closed are
The rear end is connected to the central pressing rod 6 which is not opened and closed, and the central pressing rod 6 is connected to the hollow pipe 6A. As shown in the bottom view of FIG. 9, the connecting portions of the pressing rods 6 on both sides are connected to the central pressing rod 6 via a rotating shaft. The pressing rods 6 on both sides have through holes at both ends through which the rotary shaft is rotatably inserted.

The pressing rods 6 on both sides are curved so that the shape along the central pressing rod 6 in the closed state, that is, the shape viewed from the side as shown in FIG. 8 is the same as the central pressing rod 6. . The pressing rods 6 on both sides are opened and closed by a link 15. As shown in FIG. 9, the link 15 has a tip extending in the middle of the tips of the pressing rods 6 on both sides and a trailing end extending to the trailing end of the hollow pipe 6A. The link 15 is movable in the axial direction, and is inserted through a guide pipe 16 fixed to the hollow pipe 6A so as to be movable in the axial direction.

The guide pipe 16 is the pressing rod 6 at the center.
It is fixed to the bottom surface. The links 15 projecting from the tip of the guide pipe 16 project side by side with each other, and the tips are connected to the pressing rods 6 on both sides. The links 15 projecting side by side push and open the middle and tips of the pressing rods 6 on both sides in the direction indicated by the arrow in FIG. 9 to open the pressing rods 6 as indicated by the broken lines in the figure. When the link 15 is pulled, the pressing rods 6 on both sides are pulled in the direction opposite to the arrow to be closed, and are parallel to the central pressing rod 6.

The rear end of the guide pipe 16 is fixed to the rear end of the hollow pipe 6A via a fixed pipe 17, as shown in FIG. Link 1 protruding from the fixed pipe 17
A collar 18 is fixed to the rear end of the No. 5. Between the collar 18 and the fixed pipe 17, there is a coil spring 1 which is a push spring.
9 is provided. The coil spring 19 has a link 15
The link 15 is pulled through the collar 18 in the direction of pulling it out from the fixed pipe 17. In order to fix the link 15 in place, a stopper screw 20 is screwed in the fixed pipe 17 in the radial direction. The stopper screw 20 is screwed in when fixing the link 15 and loosened when moving the link 15. Stopper screw 20
When is screwed in, the tip of the stopper screw 20 clamps the link 15 and stops the link 15. In this structure, when the stopper screw 20 is loosened, the coil spring 19 pulls back the link 15 via the collar 18, and the pressing rods 6 on both sides are closed. When opening the pressing rods 6 on both sides, the collar 18 is pressed to compress the coil spring 19,
Push the link 15 into the guide pipe 16,
9 presses the pressing rods 6 on both sides in the direction of the arrow in FIG.

As shown in FIG. 9, in the abdominal cavity expanding device in which the pressing rod 6 is opened on both sides by the link 15, both the pressing rod 6 and the link 15 can expel the internal organs and the like. Furthermore, in the abdominal cavity expanding device of this figure, the link 15 is also connected to the tip of the central pressing rod 6, and this link 15 is pushed open as shown by the chain line to be used for excluding the internal organs. The device for expanding the abdominal cavity of this structure is characterized in that the pressing rods 6 opened on both sides and the six links 15 can effectively evacuate the internal organs over a wide area. All the links 15 are connected at the rear end, and the brim 18 can be pushed to open the push rods 6 and the links 15 on both sides together.

[0037]

EFFECTS OF THE INVENTION The abdominal cavity expanding instrument used for surgery using the laparoscope of the present invention is inserted into the abdominal cavity of the body through a small hole in which the abdominal wall is incised, and the abdomen such as the intestine is pressed in a wide area to obtain the abdominal cavity. Has the feature that it can be widely expanded. This is because the abdominal cavity expanding device of the present invention can expand a plurality of pressing rods to reliably press the internal organs in the abdominal cavity and insert the treatment tool into the hollow pipe for treatment. The abdominal cavity expansion device of this structure closes the pressure rod when inserting it through the small hole to facilitate insertion into the abdominal cavity, and after inserting it into the abdominal cavity, expands the pressure rods on both sides to surely press the internal organs etc. The feature is that the abdominal cavity between the internal organs and the abdominal wall can be widely opened to secure the laparoscopic field of view. Further, in the abdominal cavity expanding instrument used in the operation using the laparoscope of the present invention, at least one of the pressing rods is a hollow pipe, or the pressing rod is connected to the hollow pipe. Can be inserted and various treatments can be performed with a treatment tool. For this reason,
It is not necessary to open a small hole for inserting a treatment tool separately from the abdominal cavity expansion instrument, and surgery can be performed more safely and quickly. With a single abdominal cavity expansion device, the internal organs are evacuated and the abdominal cavity is fully expanded, the field of view of the laparoscope is secured, and various treatment tools can be inserted into the pressing rod to perform treatment. To be realized.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing a use state of a conventional abdominal cavity expanding device.

FIG. 2 is a plan view of the abdominal cavity expanding device showing the embodiment of the present invention.

FIG. 3 is a side view of the abdominal cavity expansion device shown in FIG.

FIG. 4 is a schematic vertical cross-sectional view showing a usage state of the abdominal cavity expanding device shown in FIG.

FIG. 5 is a schematic cross-sectional view showing a usage state of the abdominal cavity expanding device shown in FIG.

6 is a plan view showing an example of a treatment tool to be inserted into the pressing rod of FIG.

FIG. 7 is a bottom view of the abdominal cavity expanding device shown in FIG.

FIG. 8 is a side view of a device for expanding an abdominal cavity showing another embodiment of the present invention.

9 is a bottom view of the abdominal cavity expanding device shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Pipe 2 ... Exclusion wing 3 ... Abdominal cavity 4 ... Internal organs 5 ... Abdominal wall 6 ... Pressing rod 6A ... Hollow pipe 7 ... Treatment tool 8 ... Insulation hose 9 ... Stainless wire 10 ... Set screw 11 ... Branch passage 12 ... Open / close valve 13 ... Rotating shaft 14 ... Rib 15 ... Link 16 ... Guide pipe 17 ... Fixed pipe 18 ... Tsuba 19 ... Coil spring 20 ... Stopper screw 21 ... Coil spring 22 ... Tip cylinder 23 ... Guide ring 24 ... Drive lever

Claims (2)

[Claims] 1. A plurality of pressing rods (6) for inserting the abdominal wall (5) through an incised small hole and expanding in the inserted state to press the inside of the abdominal cavity (3). Press the inside of the abdominal cavity (3) with 6) to open the abdominal cavity (3) between the viscera (4) and the abdominal wall (5). At least one of the rods (6) is a hollow pipe (6A) into which the treatment tool (7) can be inserted, and the inside of the abdominal cavity (3) is pressed by a plurality of pressing rods (6) to form a hollow pipe (6A). Pressing rod (6)
A device for expanding abdominal cavity for use in surgery using a laparoscope, characterized in that a treatment tool (7) is inserted thereinto for treatment. 2. A plurality of pressing rods (6) for inserting the abdominal wall (5) through an incised small hole and expanding in the inserted state to press the inside of the abdominal cavity (3). Press the inside of the abdominal cavity (3) with 6) to open the abdominal cavity (3) between the viscera (4) and the abdominal wall (5). A rod (6) is openably connected to a hollow pipe (6A) into which a treatment tool (7) can be inserted, and a plurality of pressing rods (6) press the inside of the abdominal cavity (3) to form a hollow pipe (6). 6A) treatment tool
A device for expanding abdominal cavity for use in surgery using a laparoscope, characterized in that it can be treated by inserting (7).