JP3530895B2 - Ovariectomy device for mammals - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a mammalian ovariectomy device.

[0002]

2. Description of the Related Art Ovaries have been extracted from living mammals for in vitro fertilization, fattening, suppression of estrus, etc. in mammals. As a method for extracting an ovary from a living mammal, a method by laparotomy, a method by which an ovary is removed from the abdominal cavity through the vaginal wall using a finger knife, a method by an ovary clamp, etc. have been proposed. However, the method of removing the ovaries by laparotomy has problems in terms of cost, time, accident, and nursing, and the method of removing the ovaries from the abdominal cavity through the vaginal wall using a finger knife is a peritonitis or bleeding accident due to contamination of the incision. In addition, it is not applicable to nulliparous animals and animals with vaginal stenosis. Furthermore, even when the method using an ovary clamp was used, many bleeding accidents occurred, and the problem of ovarian retention in the abdominal cavity was pointed out. For example, Japanese Patent Laid-Open No. 3-247331 discloses a device for puncturing the vaginal wall of a target animal, inserting an ovary container into the abdominal cavity, and removing the ovary while assisting with one hand. Regarding the insertion of the device into the abdominal cavity, this device needs to rotate the lever while supporting it with only one hand when cutting the extra-ovarian tissue part. This is a fairly difficult operation, and it is hard to say that it is easy to operate. Further, it is described that the blade of the part to be cut is not sharp and the wavy folds are engaged, but the extent to which bleeding is reduced by this is low, and it cannot be said that this is a particularly effective measure.

In order to solve the above-mentioned conventional drawbacks, the present inventor punctures the vaginal wall of a target animal, inserts an ovary container into the abdominal cavity, and removes the ovary while assisting with one hand. Inventing an ovariectomy device that can easily and quickly remove an ovary from a living mammal without laparotomy, and has a good operability with less bleeding during cutting. Japanese Patent Application No. 6-218367
-80310).

Next, the oophorectomy device described in JP-A-8-80310 will be described.

The oophorectomy device includes an outer tube, an inner tube slidably inserted inside the outer tube, and an ovariectomy tube slidably inserted inside the inner tube. The tube has an open tip and is equipped with an ovarian sampling port and a support handle on the side. The inner tube has a vaginal wall piercing tool fixed to the tip and an ovary housing part is provided at the rear of the vaginal wall piercing tool and the ovary sampling port and vascular crush on the side. A work handle is provided and a work handle for piercing the vaginal wall is fixed to the rear of the support handle of the outer tube, the ovariectomy tube is fixed with an ovariectomy blade at the tip, and the ovariectomy is made at the rear end protruding rearward from the inner tube. A pressure plate is attached.

This oophorectomy device is configured to puncture the vaginal wall of a target animal, insert the ovary housing part of the inner tube into the abdominal cavity, and remove the ovary while assisting with one hand. When the ovaries are removed, the connecting tubing such as blood vessels that connect the ovaries to the uterus in the extraovarian tissue part is temporarily pressed to crush it, and the ovaries are separated from the uterus in that state, and when using an ovariectomy device, Can be operated with the other hand without removing the hand from the support handle, while assisting the introduction of the device by putting the hands of the hands in the rectum of the animal. The ovary is removed without using open surgery to reduce bleeding at the time of amputation, and the drug solution is administered intraperitoneally immediately after removal of the ovary to prevent the occurrence of peritonitis and complications. Is.

[0007]

Recently, this Japanese Patent Application Laid-Open No. 8-
It has been found that it is desirable to add the following characteristics to the ovariectomy device described in No. 80310. (1) In operating the ovariectomy device, one hand is inserted into the rectum through the anus of a living mammal, and the other hand is used to hold the support handle of the ovariectomy device while feeding the front part of the ovariectomy device. Insert it into the vagina of the animal, guide the tip of the ovariectomy device through the intestinal wall through the intestinal wall to the periphery of the external uterine ostium, and insert the vaginal wall perforator from the tip opening of the outer tube of the ovariectomy device. The vaginal wall is made to project and the ovariectomy device is then inserted into the abdominal cavity, and the vaginal wall piercing device is automatically retracted from the tip of the outer tube. However, after inserting the ovariectomy device into the abdominal cavity, the vaginal wall piercing tool may jump out into the abdominal cavity for some reason and may damage tissues and organs in the abdominal cavity.
In order to eliminate this, it is desirable to fix the vaginal wall perforator after breaking the vaginal wall so that it will never jump out of the outer tube, and similarly during transportation of the ovariectomy device. (2) An operator pushes the ovariectomy pressing plate on the chest and advances the ovariectomy blade to shear the tissue part associated with the ovary and separate the ovary from the uterus. The ovaries are pushed further into the ovary housing by further pushing on the ovaries pressing plate. Next, the pressing state on the chest of the worker is released, and the ovariectomy device is returned to the original state. In this state, rotate the ovariectomy pressing plate so that the drug solution outlet of the ovariectomy tube is aligned with the central part of the ovary sampling port of the inner tube and the ovary sampling port of the outer tube.
It is introduced from the drug solution injection port of the ovariectomy tube and ejected from the drug solution outlet through the ovary sampling port into the abdominal cavity to prevent peritonitis and residual disease in mammals. Among these operations, it is desirable to hold and fix the drug solution outlet of the ovariectomized tube and the ovary sampling port of the inner tube so that the outflow and dispersion of the drug solution can be easily and surely performed with only one hand.

The present invention has been made in view of the above points, and an ovary can be easily and rapidly taken out from a living mammal without laparotomy, and particularly, there is little bleeding at the time of cutting and good operability. An ovariectomy device for animals, which never damages the abdominal cavity by preventing the vaginal wall piercing tool from jumping out of the outer tube after perforation of the vaginal wall, and removes the drug solution outlet and inner tube of the ovariectomy tube. It is an object of the present invention to provide a drug solution that can be smoothly discharged into the abdominal cavity by securely holding and fixing the ovary sampling port.

[0009]

In order to achieve the above object, the present invention provides an outer tube, an inner tube slidably inserted into the outer tube, and a slidable inside of the inner tube. An inserted oophorectomy tube, the outer tube having an open tip, an ovary sampling port and a support handle on the side surface, and the inner tube having a vaginal wall piercing tool at the tip. An ovary housing part is provided at the rear part, an ovary sampling port and a vascular crushing work handle are provided on the side, and a vaginal wall piercing work handle is attached to the rear of the support handle of the outer tube, and the ovarian resection tube has an ovarian resection at the tip. A mammal provided with a knife, having an ovariectomy pressing plate attached to the rear end protruding rearward from the inner tube, providing a drug solution injection port at the rear end of the ovarian tube, and providing a drug solution outlet on the front side surface of the tube. In the ovariectomy device, the relative position of the inner tube to the outer tube is temporarily changed. Characterized in that a means for the constant.

Further, the present invention is characterized in that a stopper for keeping the tip of the inner tube on the perforation side inside the outer tube is fixedly and releasably provided.

Further, according to the present invention, the stopper for keeping the inner pipe inside the outer pipe is slidably fitted into a through hole provided in the support handle in parallel with the central axis of the outer pipe.
A stopper lock groove into which a stopper pin is fitted is formed on the outer periphery of the stopper, and the stopper pin is provided in the fixing portion of the support handle at a right angle to the center axis of the stopper and at a position deviated from the center axis. The lock pin is slidably disposed in the hole, and the stopper pin is formed with a lock release groove into which the stopper is fitted.

Further, according to the present invention, a spring is interposed between the stopper pin and the supporting handle fixing portion.

The present invention also includes an outer tube, an inner tube slidably inserted inside the outer tube, and an ovariectomy tube slidably inserted inside the inner tube. The outer tube has an open tip and is provided with an ovary sampling port and a support handle on the side surface, and the inner tube is provided with a vaginal wall piercing tool fixed to the tip, and an ovarian accommodating portion is provided at the rear part of the vaginal wall piercing tool, and the lateral side is provided. An ovary sampling port and a vascular crushing handle are provided, and a vaginal wall piercing work handle is provided rearward of the support handle of the outer tube. An ovariectomy presser plate is attached to the protruding rear end, a liquid medicine inlet is provided at the rear end of the ovariectomizing tube, and a liquid medicine is used in a mammalian ovariectomy device having a liquid medicine outlet behind the ovariectomy blade. When the drug solution flows into the abdominal cavity of the mammal from the outlet, Characterized in that a means for holding and fixing a substantially central portion of the ovaries sampling port of the inner tube mouth.

Further, according to the present invention, the means for holding and fixing the drug solution outlet at substantially the central portion of the ovary sampling port of the inner tube is composed of a lock groove formed on the outer periphery of the ovariotomy tube and a lock pin fitted to the lock groove. And the lock pin has a lock release groove,
The lock pin is slidably attached to a hole provided in a fixed portion of a handle for perforating a vaginal wall perpendicularly to a central axis of the ovariectomy tube and offset from the central axis. .

Further, the present invention is characterized in that both ends of the lock pin are bulged.

[0016] Further, the present invention is characterized in that a means for holding and fixing the drug solution at the substantially central portion of the ovarian sampling port of the inner tube is provided when the drug solution is discharged from the drug solution outlet into the abdominal cavity of the mammal. And

Further, according to the present invention, the stopper for keeping the inner pipe inside the outer pipe is slidably fitted in a through hole provided in the support handle in parallel with the central axis of the outer pipe.
A stopper lock groove into which a stopper pin is fitted is formed on the outer periphery of the stopper, and the stopper pin is provided in the fixing portion of the support handle at a right angle to the center axis of the stopper and at a position deviated from the center axis. A lock release groove is formed in the hole so that the stopper pin fits the stopper pin, a lock spring is interposed between the stopper pin and a support handle fixing portion, and The means for holding and fixing the tube at substantially the center of the ovarian sampling port comprises a lock groove formed on the outer circumference of the ovariectomy tube and a lock pin fitted therein, and the lock pin has a lock release groove, and The lock pin is slidably attached to a hole provided at a fixed portion of the handle for perforating the vaginal wall, perpendicular to the central axis of the ovariectomy tube and offset from the central axis. It is characterized by being attached.

Further, according to the present invention, all of the support handle, the vascular crushing work handle and the vaginal wall piercing work handle can be detached from the oophorectomy instrument, and these handles are pressed when the ovariotomy instrument is stored. It is characterized in that it is fixed by screwing it into a screw hole provided in the plate.

[0019]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described with reference to the drawings.

FIG. 1 is a longitudinal sectional view showing a schematic structure of an ovariectomy device according to the present invention, FIG. 4 is a longitudinal sectional view showing a schematic structure of the ovariectomy device according to the present invention when a vaginal wall is perforated, and FIG. 7 is a book. FIG. 9 is a longitudinal cross-sectional view showing a schematic configuration of an ovariectomy device according to the invention when inserting an ovary, FIG. 9 is a longitudinal cross-sectional view showing a schematic configuration of the ovariectomy device according to the present invention at the time of crushing a blood vessel and ovariectomy, and FIG. FIG. 6 is a longitudinal cross-sectional view showing a schematic configuration when injecting a chemical liquid by

The structure of the mammalian ovariectomy device according to the present invention is as follows.

The mammalian ovariectomy device 1 of the present invention is an elongated cylinder, and is used in a substantially horizontal state as shown in FIGS. 1, 4, 7, 9, and 12. Therefore, the following description will be referred to as up, down, left and right with reference to this horizontal state. The perforation side is referred to as the front.

The oophorectomy device 1 is roughly divided into an outer tube 10
And the inner pipe 20 slidably inserted inside the outer pipe 10.
And an ovariectomy tube 30 slidably inserted into the inner tube 20.

The outer tube 10 is the outermost frame of the oophorectomy instrument 1, and the inner tube 20 can slide in the longitudinal direction inside the outer tube 10. The outer tube 10 has an opening 11 at the tip, an ovary sampling port 12 on the upper side surface, and a support handle fixing portion 1 on the lower side surface.
3A is attached, and the support handle 13 is fixed here downward. The ovary sampling opening 12 is an entrance for pushing the ovary 100 into the oophorectomy device 1, and has a fold (fold) formed at the edge portion on the rear end side.

The inner pipe 20 can slide in the inner direction of the outer pipe 10 in the longitudinal direction, and its rear portion projects from the rear end 15 of the outer pipe 10 to the outside. The inner tube 20 has a vaginal wall piercing tool 21 at the tip.
Must be fixed, an ovary container 22 is provided at the rear of the vaginal wall piercing tool 21, and the tip must have a volume capable of accommodating at least two ovaries 100. Also, an ovary sampling port 23 is provided on the upper side surface, and a vascular crushing work handle 24 is provided in front of the support handle 13.
Further, a handle 25 for piercing the vaginal wall is provided behind the support handle 13 of the outer tube 10 at a position where it can be grasped by a finger of the hand via a handle fixing portion 25A. All of these handles are detachably attached to the fixed portion with screws.

The vaginal wall punch 21 has a sharpened cutting edge. Further, the vaginal wall piercing tool 21 can be attached and detached by an appropriate means, so that the vaginal wall piercing tool 21 having a different tip angle can be used as necessary. The vaginal wall piercing tool 21 is configured to be automatically retracted from the tip of the outer tube 10 by a spring or the like except when in use. However, the vaginal wall piercing tool 21 is inserted into the abdominal cavity 7 during the operation after the ovariectomy device 1 is inserted into the abdominal cavity 7. There is a risk that the punch 21 may jump into the abdominal cavity 7 for some reason and damage the tissues and organs in the abdominal cavity 7. In order to eliminate this, the vaginal wall piercing tool 21 is provided with means for fixing the vaginal wall 6 after breaking the wall of the vagina 6 so as not to jump out of the outer tube 10. This is one of the present inventions and will be described below.

FIG. 2 is a front view of the stopper releasable state for explaining the schematic constitution of the stopper (for locking the vaginal wall piercing tool), and FIG. 3 is a side view of FIG. FIG. 5 is a front view of the stopper fixing state for explaining the schematic configuration of the vaginal wall piercing tool locking stopper according to the present invention. FIG. 6 is a side view of FIG.

The stopper for locking the vaginal wall piercing tool is fixed to prevent the vaginal wall piercing tool 21 from being damaged in the abdominal cavity 7 so that the vaginal wall piercing tool 21 will never jump out of the outer tube 10 after the vaginal wall piercing. It is a means to do.

This fixing means is composed of a stopper 50 and a stopper pin 51, and the stopper 50 is supported by the handle 1.
By fixing the support handle 13 to the support handle 13, the gap between the support handle 13 and the vaginal wall piercing work handle 25 can be kept constant.
Therefore, the inner pipe 20 does not come out of the outer pipe 10. The stopper 50 is slidably fitted in a through hole 13B provided in the fixing portion 13A of the support handle in parallel with the central axis of the outer tube 10, and the stopper 50 is an end portion close to the vaginal wall piercing work handle 25. A stopper lock groove 52 with which the stopper pin 51 engages is formed on the outer periphery near the opposite end (the end near the vascular crushing work handle 24) having a bulging head portion 50A, and the stopper pin 51 supports the support. The handle fixing portion 13A is slidably disposed in a hole 13C provided at a right angle to the center axis of the stopper 50 and eccentric to the center axis. The stopper pin 51 has a bulging head portion 5 at both ends.
1B, a vaginal wall piercing tool lock release groove 53 with which the stopper 50 engages is formed on the outer periphery of the central portion of both ends, and one head 51B (right end in FIG. 3) and the support handle fixing portion 13A.
A lock spring 51A (compression spring) is interposed between the stopper lock groove 52 and the lock release groove 53. The stopper 50 can move only when it enters the vaginal wall perforator lock release groove 53.
Even if the stopper pin 51 is in the released state (even at a position other than the stopper lock groove 52) by this spring 51A, the stopper 50 moves to cause the stopper lock groove 52 to move.
When the stopper pin 51 is fitted in, it is fixed without fail.

The ovary container 22 contains at least two ovaries 1.
It has a volume that can accommodate 00. The handle 24 for crushing the blood vessel is provided in front of the support handle 13 with the inner tube 2
It is attached downwardly to 0 and within the range where the fingers of the hand can be grasped by the support handle 13. The ovary sampling port 23 is an inlet for pushing the ovary 100 into the inner tube 20, and has a fold formed at the edge portion on the distal end side.

When the handle 24 for crushing the blood vessel is operated so as to be grasped together with the support handle 13, the ovary sampling port 23 of the inner tube 20 and the ovarian sampling port 12 of the outer tube 10 are exactly coincident with each other, and finally they are gradually narrowed. The extra-ovarian tissue part is closed between the folds of the ovary sampling port 23 and the fold of the ovary sampling port 12 by closing the hole to crush the blood vessels to the ovaries. At this time, the extra-ovarian tissue part is not cut only by tightening it between the folds.

The distance between the support handle 13 and the vaginal wall piercing work handle 25 and the distance between the support handle 13 and the blood vessel crushing work handle 24 are approximately grasped between the thumb of one hand and the other finger (for example, the index finger). Determine the distance you can. By doing so, the outer tube and the inner tube can be moved relative to each other by simply gripping the two handles with only one hand.

In order to facilitate this operation, a compression spring 27 is interposed between the blood vessel crushing work handle 24 and the rear end 15 of the outer tube 10 so that the vascular crushing work handle 24 and the outer tube 10 can be operated.
A compression spring 26 is interposed between the compression spring 26 and the intermediate wall 14.

Due to the balance between the compression spring 27 and the compression spring 26, in the case shown in FIG.
The ovary sampling port 12 of the outer tube 10 exactly matches the inner tube 2
The vaginal wall piercing tool 21 at the tip of 0 is retracted from the tip opening 11 of the outer tube 10. However, when the handle 25 for piercing the vaginal wall is squeezed with a finger of one hand and brought closer to the support handle 13 against the elasticity of the compression spring 26, the vaginal wall piercing tool 21 projects from the tip opening 11 of the outer tube 10 (Fig. In 4), the state shown in FIG. 1 is restored when the gripped finger is released. Next, when the handle 24 for crushing the blood vessel is squeezed with a finger of one hand and brought closer to the support handle 13 against the elastic force of the compression spring 27, the inner tube 20 retreats relative to the outer tube 10, that is, rightward in the drawing. By moving, the ovary sampling port 23 of the inner tube 20 and the ovary sampling port 12 of the outer tube 10 are displaced and the communication hole is closed (FIG. 9). That is, the blood vessels and the like communicating with the ovaries in the extra-ovarian tissue part are compressed. It returns to its original state when you release your finger.

The ovariectomy tube 30 can slide in the inner direction of the inner tube 20 in the longitudinal direction, the rear part thereof projects outward from the rear end of the inner tube 20, and the rear part thereof becomes the thick part 30A of the ovariectomy tube. ing. The ovariectomy tube 30 is provided with a cup-shaped piston at its tip, and an ovariectomy blade 31 is provided around the piston, and the ovariectomy blade 31 is provided with a cutting blade facing forward. After cutting, it also works to push the ovaries into the housing. Ovariectomy tube 3
An ovariectomy pressing plate 32 is fixed to the rear thick portion 30A of 0. When the ovariectomy pressing plate 32 is pushed into the inner tube 20, the ovariectomy blade 31 causes the ovariectomy blade 31 to move to the ovary sampling port 23 of the inner tube 20.
Since it slides forward just inside the ovary, the ovary is sheared while being sandwiched between the ovary sampling port 12 and the ovary sampling port 23 (FIG. 9). Due to the compression spring 33 interposed between the rear end of the inner tube 20 and the rear end of the ovariectomy tube 30, that is, the ovariectomy pressing plate 32, the ovariectomy blade 31 normally moves behind the ovary sampling port 23 of the inner tube 20 ( That is, although it is located on the right side of the ovarian sampling port 23 in the figure, when the ovariotomy pressing plate 32 is pushed on a part of the operator's body, such as the chest, that is, when it is moved to the left in the figure, the ovaries cutting blade When 31 moves forward against the elasticity of the compression spring 33 and stops pushing the ovariectomy pressing plate 32, the ovariectomy blade 31 returns to the original position shown in FIG. 7.

After excision of the ovary, in order to prevent, for example, peritonitis, a medicinal solution is made to flow through the ovariectomy tube 30 from a medicinal solution injection port 34 provided at the rear end of the ovariectomy tube 30, and the medicinal solution flow at the front end thereof. It is administered by flowing out from the outlet 35 into the abdominal cavity. At this time, in order to allow the drug solution to smoothly flow into the abdominal cavity, the drug solution outlet 35 of the oophorectomy tube 30, the ovarian sampling port 23 of the inner tube 20 and the ovarian sampling port 12 of the outer tube 10 are securely aligned and fixed. Means are provided. This is one of the present inventions and will be described below.

8, 10, 11 and 12 show the drug solution outlet 3 of the ovariectomy tube 30 in order to allow the drug solution to smoothly flow into the abdominal cavity 7.
5 and FIG. 11 are views for explaining means for surely fixing the positions of the ovary sampling port 12 and 23 to each other. FIG. 11 shows a state in which the center of the drug solution outlet of the ovariectomy tube and the ovary sampling port are securely fixed in the present invention. 1A is a front view and FIG. 1B is FIG.
1 (a) is a cross-sectional view taken along the line CC, and FIG. 1 (c) is a cross-sectional view of the device showing a state where the center of the drug solution outlet and the center of the ovary sampling hole are aligned.

Means for fixing the drug solution outlet port 35 to the central portion of the ovary sampling port 23 of the inner tube 20 and the ovary sampling port 12 of the outer tube 10 is formed on the outer periphery of the thick portion 30A of the ovariotomy tube 30. A lock groove 41 and an ovariectomy tube lock pin 40 fitted to the lock groove 41. The ovariectomy tube lock pin 40 is perpendicular to the central axis of the ovariectomy tube 30 in the fixing portion 25A of the vaginal wall piercing work handle 25. The lock pin 40 is slidably mounted in a hole 25B provided eccentrically with respect to the central axis, and the lock pin 40 has bulged heads at both ends. There is a lock release groove 42 on the outer periphery, which is biased toward
(B) is biased to the left from the center).

According to this configuration, the ovariectomy tube lock pin 4
The ovariectomy tube 30 can slide with respect to the inner tube 20 as long as the ovariectomy tube 30 meshes with the zero release groove 42. When the inner groove 20 and the ovariectomy tube 30 are aligned with the lock groove 41 and the lock pin 40, which are provided so as to be positioned at the time of the outflow of the drug solution,
When the entire oophorectomy device 1 is tilted, the weight of the bulging portions at both ends of the lock pin 40 moves in the tilt direction to shift the position of the lock release groove 42.
Mesh with each other and the positions of the inner tube 20 and the ovariectomy tube 30 are fixed. When the outflow of the drug solution is completed, the entire ovariectomy instrument 1 is tilted in the opposite direction and the lock release groove 42 is aligned with the position of the ovariectomy tube 30 to allow the ovariectomy tube 30 to move. In this way, the operator can easily perform the excision work because the ovariectomy instrument 1 can be fixed and released without using a hand by simply tilting the ovariectomy instrument 1.
This is especially effective when a chemical solution outflows which requires repeated work.

FIG. 13 is a view showing a method of fixing the support handle, the vessel crushing work handle and the vaginal wall piercing work handle when the oophorectomy device according to the present invention is stored.

The support handle 13, the vascular crushing work handle 24, and the vaginal wall piercing work handle 25 are all removable from the oophorectomy instrument 1.
It is fixed to and can be stored together. For example, as shown in FIG. 13, screw holes 32a are provided on one surface of the ovariectomy pressing plate 32, and the three removed handles are screwed and fixed in these holes 32a. Figure 1
In FIG. 3, only the handle 25 for piercing the vaginal wall is fixed. Alternatively, the diameters of these three handles may be different so that the other two can be accommodated in one handle, or the three handles can be screwed in the longitudinal direction to form one handle. Alternatively, it may be fixed to the ovariectomy pressing plate 32 in parallel with the ovariectomy tube 30. This facilitates disinfection and storage after using the ovariectomy device 1.

A method of operating the mammalian ovariectomy device according to the present invention having the above structure will be described with reference to the drawings. (1) The oophorectomy device 1 is taken out from the storage box, and the support handle 13, the vascular crushing work handle 24, and the vaginal wall piercing work handle 25 are each fixed to the work position of the oophorectomy device 1. (2) The right hand 3 is inserted into the rectum 9 from the anus 5 of a living cow. (3) While holding the support handle 13 and the blood vessel crushing work handle 24 with the left hand 4, the tip of the oophorectomy instrument 1 is inserted into the vagina 6 of a living cow. (4) With the right hand 3 in the rectum, the tip of the oophorectomy device 1 is squeezed through the intestinal wall and guided to the periphery of the external uterine ostium (see FIG. 4). (5) Push the stopper pin 51 with your finger to stop it.
When the handle 25 for piercing the vaginal wall and the support handle 13 are squeezed with the fingers of the left hand 4 while allowing them to move freely,
The vaginal wall piercing tool 21 projects from the tip opening 11 of the outer tube 10,
The dorsal side of the vaginal wall is broken by pushing the ovariectomy device 1 forward (see FIG. 4). The relationship between the stopper pin 51 and the stopper 50 at this time is as shown in FIGS. (6) When the ovariectomy device 1 is inserted into the abdominal cavity 7 and the finger gripped in the left hand 4 is released, the vaginal wall perforation tool 21 automatically retracts from the distal end opening 11 of the outer tube 10, and at the same time the sampling port 12 is released. (See FIG. 7). When the support handle 13 and the blood vessel crushing work handle 24 are squeezed, the stopper 50 moves relative to the support handle 13 and the stopper lock groove 52 comes closest to the stopper pin 51 (see FIG. 5). 6, the lock spring 51A is released to the state of FIG. 6, the stopper pin 51 enters the stopper lock groove 52, and the stopper 5
0 is fixed. After that, the ovarian sampling port 23 of the inner tube 20 and the ovarian sampling port 12 of the outer tube 10 which overlap each other are positioned in the abdominal cavity 7. (7) One ovary 100 while searching with the fingers of the right hand 3
To the inner tube 2 through the ovary sampling ports 12 and 23 of the oophorectomy device 1.
Push into 0 (see Figure 7). (8) Support handle 13 and handle 24 for crushing blood vessels
When the finger is squeezed with the finger of the left hand 4, the inner tube 20 is retracted relative to the outer tube 10, and the positions of the ovary sampling port 23 of the inner tube 20 and the ovary sampling port 12 of the outer tube 10 are relatively displaced. , The ovary 10 between the fold of the ovary sampling port 23 and the fold of the ovary sampling port 12
Tighten the tissue associated with 0 to crush the blood vessels to the ovary 100. The relationship between the ovariectomy tube 30 and the lock pin 40 from the start of work to this time is as shown in FIG. (9) In this state, when the worker 2 pushes the ovariectomy pressing plate 32 with his / her chest, the ovariectomy blade 31 advances to move the ovary 10
The tissue associated with 0 is sheared and the ovary 100 is separated from the uterus 8. Further pressing the ovariectomy pressing plate 32 causes ovary 1
00 is pushed into the ovary container 22. The overall state at this time is shown in FIG. 9, and the relationship between the ovariectomy tube 30 and the lock pin 40 is shown in FIG. (10) Next, by releasing the pressed state by the chest of the worker 2, the ovariectomy pressing plate 32 returns to its original position, and the support handle 13 and the blood vessel crushing work handle 24 are released from the gripped state. The ovariectomy device 1 is in the state shown in FIG. (11) The above operation steps (7), (8), and (9) are repeated, and the remaining one ovary 100 is separated from the uterus 8 and pushed into the ovary housing part 22. (12) The ovariotomy instrument 1 is tilted as shown in FIG. 11B while the ovariotomy pressing plate 32 is pushed on the chest of the worker 2. Then, the ovariectomy pressing plate 32 is slowly released on the chest of the worker 2. Therefore, when the lock groove 41 formed on the outer periphery of the thick portion 30A at the rear of the ovariectomy tube 30 arrives at the position of the ovariectomy tube lock pin 40 (FIG. 11A).
11), the lock pin 40 slides down in the direction of the arrow due to gravity, and the ovariectomy tube 30 is fixed as shown in FIG. 11B. At this time, as shown in FIG. 11 (c), the drug solution outlet 35 of the ovariectomizing tube 30 is located just above the ovary sampling ports 12, 2.
It is fixed so that it comes to the center of 3. In this state, the ovariectomy device 1 is turned upside down to appropriately administer the drug solution into the abdominal cavity 7 (see FIG. 12). If the lock pin 40 is hard to slip off, it may be pushed with a finger.

Normally, the two ovaries 100 are separated from the uterus 8 and pushed into the ovary housing portion 22, and then the drug solution is jetted into the abdominal cavity 7.
The drug solution may be administered into the abdominal cavity 7 before being separated from the uterus 8 and pushed into the ovary housing part 22. At this time, the ovariectomy tube 30 is allowed to move freely. In this case, in order to remove the second ovary, the above (7) (8)
Perform operation (9). (13) The oophorectomy device 1 is removed from the body of the cow so that the removed ovary does not jump out of the ovary sampling port, and the two ovaries 100 that have been removed are taken out. This completes the ovarian removal operation. (14) After the above operations are completed, disassemble the ovariectomy device 1,
Clean and disinfect. When assembled after drying, the support handle 13, the vascular crushing work handle 24, and the vaginal wall piercing work handle 25 can be compactly stored by attaching them to the hole 32a of the ovariectomy pressing plate as shown in FIG. It becomes convenient.

[0044]

As described above, according to the present invention, the following excellent effects can be obtained. (1) There is no damage to the inside of the abdominal cavity after the vaginal wall piercing tool is used to break the wall of the vagina and the ovariectomy device is inserted into the abdominal cavity. It is also safe during transportation. (2) The drug solution can be surely allowed to flow out to the intraabdominal excision site. (3) The collected ovaries do not pop out. (4) The position can be fixed by a simple one-handed operation such as grasping the handle and tilting the ovariectomy device. (5) Since the support handle, the blood vessel crushing work handle, and the vaginal wall piercing work handle are attached to the ovariectomy pressing plate, it is compact and convenient for storage and transportation.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing a schematic configuration of an ovariectomy device according to the present invention.

FIG. 2 is a front view illustrating a schematic configuration of a vaginal wall piercing tool locking stopper according to the present invention. It is a side view when a stopper for locking a vaginal wall piercing tool is in a slidable state.

FIG. 3 is a side view of FIG. 2 when the stopper for locking the vaginal wall piercing tool according to the present invention is in a slidable state.

FIG. 4 is a longitudinal cross-sectional view showing a schematic configuration of the ovariectomy device according to the present invention when perforating a vaginal wall.

FIG. 5 is a front view illustrating a fixed state of the vaginal wall piercing tool locking stopper according to the present invention.

FIG. 6 is a side view of FIG. 5 illustrating a fixed state of the vaginal wall piercing tool locking stopper according to the present invention.

FIG. 7 is a longitudinal cross-sectional view showing a step of pushing one ovary into an inner tube through an ovary sampling port while observing with a right finger in the ovariectomy device according to the present invention.

FIG. 8 is a diagram showing a means for securely fixing the centers of the drug solution outlet of the ovariectomy tube and the ovary sampling port for smoothly ejecting the drug solution into the abdominal cavity according to the present invention.
8A is a front view, and FIG. 8B is a cross-sectional view taken along the line BB of FIG. 8A.

FIG. 9 is a longitudinal cross-sectional view showing a schematic configuration of the oophorectomy device according to the present invention during crushing of ovaries and removal of ovaries.

FIG. 10 is a view for explaining a drug solution ejecting means for ejecting the drug solution smoothly into the abdominal cavity by securely fixing the centers of the drug solution outlet of the oophorectomy tube and the ovary sampling port in the present invention.

11A and 11B are views for explaining a state in which the center of the drug solution outlet of the ovariectomy tube and the ovary sampling port of the present invention are securely fixed, FIG. 11A is a front view, and FIG. 11B is FIG. 11A. Is a cross-sectional view taken along the line C-C of FIG. 4, and (c) is a cross-sectional view of the instrument showing a state in which the center of the drug solution outlet and the center of the ovary sampling hole are aligned.

FIG. 12 is a view for explaining a state in which the center of the drug solution outlet of the ovariectomized tube and the center of the ovary sampling hole are surely aligned with each other in the present invention.

FIG. 13 is a view showing a method of fixing a support handle, a vascular crushing work handle, and a vaginal wall piercing work handle during storage of the ovariectomy device according to the present invention.

[Explanation of symbols]

1 Ovariectomy device 10 outer tube 11 openings 12 Ovary sampling port 13 Support handle 13A Support handle fixing part 13B through hole 13C hole 14 Middle wall of outer tube 15 Rear end of outer tube 20 inner tube 21 Vaginal wall punch 22 Ovary Housing 23 Ovarian sampling port 24 Handle for crushing blood vessels 25 Handle for piercing the vaginal wall 25A fixed part 25B hole 30 ovariectomy tubes 30A thick part 31 Ovariectomy knife 32 Ovariectomy pressure plate 34 Chemical injection port 35 Chemical outlet 40 Ovariectomy tube lock pin 42 Lock release groove 50 Stopper for locking vaginal wall punch 51 Stopper pin 51A lock spring 51B head 52 Stopper lock groove 53 Vaginal wall punch lock release groove 100 ovaries

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-8-80310 (JP, A) JP-A-3-247331 (JP, A) JP-A-5-154172 (JP, A) JP-A-5- 237134 (JP, A) JP 5-220157 (JP, A) JP 1-146538 (JP, A) JP 5-184535 (JP, A) JP 6-16785 (JP, B2) Japanese Patent Publication 5-57862 (JP, B2) Actual Public 6-22332 (JP, Y2) Actual Public 5-34645 (JP, Y2) Actual Public Sho-62-35458 (JP, Y2) (58) Fields investigated (Int.Cl. ⁷ , DB name) A61D 1/00 A61B 17/22 A61D 19/00

Claims (10)

(57) [Claims] 1. An outer tube including an outer tube, an inner tube slidably inserted into the outer tube, and an ovariectomy tube slidably inserted into the inner tube. Has an open tip, an ovary sampling port and a support handle on the side surface, the inner tube has a vaginal wall piercing tool on the distal end, an ovary housing part is provided on the rear part of the vaginal wall piercing tool, and the ovarian sampling port is provided on the side surface. And after that
The handle for crushing blood vessels and the han for piercing the vaginal wall
A dollar is attached, the ovariectomy tube is equipped with an ovariectomy blade at the tip, an ovariectomy pressing plate is attached to the rear end protruding rearward from the inner tube, and a drug solution inlet is provided at the rear end of the ovariectomy tube. In a mammalian ovariectomy device having a drug solution outlet on the anterior side of the ovariectomy tube, in order to temporarily fix the relative position of the inner tube to the outer tube ,
Between the working handle of the inner pipe and the support handle of the outer pipe
An ovariectomy device for a mammal, comprising a rod-shaped or tubular stopper that can be fixed and opened freely . 2. A stopper for keeping the tip of the vaginal wall piercing tool for the inner tube inside the outer tube, and a stopper for supporting the vaginal wall.
The ovariectomy instrument for mammals according to claim 1, wherein the instrument is provided between the handle and the hole working handle . 3. The stopper for keeping the inner tube inside the outer tube is slidably fitted in a through hole provided in the support handle in parallel with the central axis of the outer tube, and the stopper is provided in the stopper. A stopper lock groove into which a stopper pin is fitted is formed on the outer periphery, and the stopper pin is slidable in a hole provided in the fixing portion of the support handle at a right angle to the center axis of the stopper and offset from the center axis. 3. The ovariectomy instrument for mammals according to claim 1 , wherein the stopper pin is formed with a lock opening groove into which the stopper fits. 4. The mammalian ovariectomy device according to claim 3, wherein a spring is interposed between the stopper pin and the support handle fixing portion. 5. An outer tube including an outer tube, an inner tube slidably inserted into the outer tube, and an ovariectomy tube slidably inserted into the inner tube. Has an open end and an ovary sampling port and a support handle on the side, the inner tube has a vaginal wall piercing tool fixed to the tip, an ovary housing part is provided at the rear of the vaginal wall piercing tool, and the ovarian sampling port is provided on the side. set kicking along with the, the
A handle for crushing blood vessels and a handle for piercing the vaginal wall at the rear
Attached to the ovariectomy tube , the ovariectomy tube is provided with an ovariectomy blade at the tip, an ovariectomy pressing plate is attached to the rear end protruding rearward from the inner tube, and a drug solution inlet is provided at the rear end of the ovariectomy tube. In a mammal ovariectomy device having a drug solution outlet behind the ovariectomizing blade, when the drug solution is allowed to flow from the drug solution outlet into the abdominal cavity of the mammal, the drug solution outlet is located approximately at the center of the ovarian sampling port of the inner tube. Providing a lock pin to hold the inner tube and ovariectomy
An ovariectomy device for mammals, characterized in that the tube is fixed . 6. The structure of a lock pin for holding and fixing the drug solution outlet at substantially the center of the ovary sampling port of the inner tube ,
The ovariectomy tube comprises a lock groove formed on the outer circumference of the ovariectomy tube and a lock pin fitted into the lock groove. The lock pin has a lock opening groove, and the lock pin is provided at the fixing portion of the handle for perforating the vaginal wall. The ovariectomy instrument for mammals according to claim 5, wherein the instrument is slidably attached to a hole provided perpendicularly to the central axis of the said and offset to the central axis. 7. The mammalian ovariectomy device according to claim 6, wherein both ends of the lock pin are bulged. 8. A lock pin is provided so as to hold the drug solution outlet at approximately the center of the ovary sampling port of the inner tube when the drug solution is discharged from the drug solution outlet into the abdominal cavity of a mammal .
The tube and the ovariectomy tube are fixed together.
The ovariectomy device for mammals of any one of Claims 1-4. 9. The stopper for keeping the inner tube inward with respect to the outer tube is slidably fitted into a through hole provided in the support handle in parallel with the central axis of the outer tube, and the stopper has an outer circumference. A stopper lock groove into which a stopper pin is fitted is formed in the stopper lock groove, and the stopper pin is slidable in a hole formed in the fixing portion of the support handle at a right angle to the center axis of the stopper and at a position offset from the center axis. The stopper pin is formed with a lock release groove into which the stopper fits, and the stopper pin has a lock spring between the stopper pin and a fixed portion of the support handle. The means for holding and fixing in substantially the central portion of the occlusion tube comprises a lock groove formed on the outer periphery of the ovariectomy tube and a lock pin fitted therein, and the lock pin has a lock release groove, The lock pin is slidably attached to a hole provided in a fixed portion of a handle for perforating a vaginal wall perpendicularly to a central axis of the ovariectomy tube and offset from the central axis. The mammalian ovariectomy device according to claim 8. 10. The support handle, the vascular crushing work handle, and the vaginal wall piercing work handle are all removable from the ovariectomy device, and these handles are provided on the ovariectomy pressing plate when the ovariectomy device is stored. It is fixed by screwing it into a screw hole.
An ovariectomy device for mammals according to any one of 1.