JPH07328045A - Piercing tool for inserting drain tube - Google Patents

Abstract

PURPOSE:To provide a piercing tool for inserting a drain tube capable of easily penetrating the thick and firm skin of an animal and simply fitting or removing the drain tube without feeding air into a body cavity when a diagnostic tubular apparatus such as the drain tube is inserted into the body cavity of the animal. CONSTITUTION:This piercing tool for inserting a drain tube is constituted of two trough-shaped pinching members 1, 1' formed when an injection needle-like piercing tube having the size to store a drain tube is divided into two and finger hook sections 2, 2' formed at the rear end sections of the pinching members 1, 1'. Movable grip sections can be connected via support sections in place of the finger hook sections 2, 2'.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is capable of easily breaking through the thick and durable skin of an animal when inserting a drain pipe or the like into a body cavity or a hollow organ of an animal while preventing air from entering the drain pipe. The present invention relates to a puncture device for inserting a drain pipe, which can be easily attached to and detached from a pipe or the like.

[0002]

2. Description of the Related Art When an animal has peritonitis, peritonitis, pleural effusion, ascites, etc., in order to eliminate the fluid accumulated in the body cavity,
Conventionally, a human "trocar" has been used. That is, a nail-shaped puncture needle is covered with a hollow metal tube called an outer tube to puncture it from the body surface, and when it reaches the inside of the body cavity, the puncture needle is removed from the outer tube, and the remaining outer tube is covered with rubber or silicone called drain. A drain pipe made of water is connected to discharge the liquid. However, trocars that can be easily punctured by humans were very difficult for animals to puncture. This is because animal skin is much thicker and stronger than human skin. Even though elephants and hippos are exceptional, the skin of herbivores such as cows and horses is designed so that they cannot be easily bitten by the fangs of carnivorous animals, and even the skin of dogs and cats.
It is strong enough not to cause fatal injury even if you quarrel and engage with each other. These characteristics are used to make shoes and bags that become the skin of shamisen and drums, but if you try to pierce the skin of such an animal with a human trocar, it will not be The part that didn't matter at all, the leading edge of the mantle over the puncture needle, got in the way. In other words, since a ring-shaped step is formed around the puncture needle by the thickness of the outer tube, this hinders the step from being able to penetrate the skin of the animal.

For the above reasons, when a veterinarian uses a trocar, he first incises the animal's thick skin with a scalpel,
After that, a two-step operation of puncturing the body cavity wall with the trocar from the incision was required. For example, JP-A-60-
In Japanese Patent No. 85741, when an abdominal wall tube is inserted into the abdominal cavity of a patient, "after cutting the abdomen, disinfecting it, and performing local anesthesia, incising the epidermis consisting of the outer skin and the dermis with a scalpel by about 1 to 2 cm. , Puncture and penetrate the abdominal wall from the incision with a trocar having a diameter of 5 to 6 mm. " Thus, it takes a lot of time to insert the trocar, which may be a fatal defect in an urgent operation such as dyspnea. For example, in the treatment of empyema (suppurative pleurisy) that occurs frequently in cats, under normal conditions, general anesthesia should be used and the patient should be laid on his back. It can be treated by draining the drainage tube. However, for a dying cat who came to the hospital after getting worse enough to have difficulty breathing,
I can't get anesthesia and I don't have the time to wear a positive pressure ventilator. Under such an urgent situation, if the skin is shaved as usual, the incision is made and the trocar is pierced, then nothing can help. However, even if I try to force the trocar directly on the skin, it does not work. Therefore, as an urgent expedient to stop, a scalpel or a nail-like puncture needle is pierced into the chest cavity from above the skin, and a flexible hard drain tube is pierced into the cut end to drain the pus. At the moment of piercing the female, there was a high risk that air would invade the negative pressure chest and press the lungs, resulting in the worst situation of respiratory arrest. If you lose your life during surgery, the owner may claim damages. Many veterinarians refused the operation when an emergency patient who needed urgent puncture was brought in because of fear of it.

Under the circumstances described above, there has been a long-felt need in the veterinary industry for the development of a drainage tube insertion tool for veterinary use in place of a trocar. For this purpose, a conventional mantle tube may be housed inside a puncture needle. As a similar product, for example, in Japanese Patent Laid-Open No. 61-85934, there is a "skin opening" similar to a long beak of a bird. A surgical instrument for plasty "is disclosed. That is, a pair of sandwiching members obtained by tapering thin plates each having an arch-shaped cross section are connected in a U-shape at the rear end and integrally formed in a tweezers shape, and a rear hole is formed at the rear end. As a substitute for the conventional outer tube, a “guide tube” with a drain tube inserted is inserted into this bottom hole, but most of the pinching members are used by using the elastic force of rubber to pinch this. Is wrapped in a rubber sheath. Therefore, while sandwiching the guide tube between the sandwiching members that are matched so as to close the bird's beak, the exposed portion of the tip that is not wrapped in the rubber sheath is pierced into the skin. When the tip reaches the inside of the body cavity, the guide tube inserted into the hip hole in advance is pushed further into the interior to open the tips of both sandwiching members. At that time, since the cut end of the skin is expanded, the pinching member is strongly tightened. Therefore, it is possible to prevent air from entering the body cavity when pushing the guide tube. Then, while holding the guide tube in the body cavity, the sandwiching member with the beak opened is retracted along the drain tube and pulled out to the outside of the skin.

[0006]

The above-mentioned prior art is described in the specification as being suitable for veterinary use. However,
According to the experience of the inventor who is a veterinarian, the beak-shaped device can never break through the skin of an animal. What is the structure,
This is because it is not possible to form a sharp blade like a scalpel, and it is only possible to push the tissues apart. That is, if both ends of the tapered sandwiching member are aligned, it is impossible to form a cutting point by overlapping like a chopstick. Therefore, the tips are not aligned and one tip is projected from the other. However,
No matter how sharply the protruding tip is formed, the incision in the skin must be small because of the restriction of tapering. The tip of the recessed part should become a step on the small cut end, and it should not penetrate well. In order to solve the problem, it is said that both side edges of the tip end portion exposed from the rubber sheath act as cutting edges to cut and spread the tissue. However, if a pair of arched thin plates are made to face each other, the cross section becomes spindle-shaped. Therefore, in reality, the thickness is as if the seam of a walnut shell is formed, and it does not serve as a blade. Therefore, it is unlikely to break through the thick and tough skin of animals.

The above-mentioned prior art has another drawback. That is, since both sandwiching members are integrally formed and the rear end portions are connected to each other, a rear hole for inserting the guide tube is provided at the rear end portion. , The pinching member pulled out from the skin after puncturing cannot be removed from the drain tube. It is troublesome to pull it out along the drain pipe for a long time, and since a suction pump is often connected to the end of the drain pipe, it will be left until the end of surgery. During that time, the blood adhering to the sandwiching member dries and sticks, which is unsightly and takes time to clean. After all, the drain tube must be disposable. Further, if the drain pipe is not inserted into the guide pipe, the drain pipe will be caught in the bottom hole, so only a thin drain pipe having a small outer diameter can be used, and a thick pipe for a vacuum pump cannot be mounted. Besides, it is said that the small cut-out effectively acts on the air invasion prevention, but at the moment when the guide tube is pushed in to open both the sandwiching members, it seems that air is likely to enter through the gaps on both sides. There is no product, so I can't make an affirmation, but it smells like I've collapsed. In any case, the puncture device having the above-mentioned drawbacks is not useful for veterinary medicine.
The problem to be solved by the present invention is to make it possible to easily penetrate the skin of an animal while holding a drain pipe or the like, and to never let air into the body cavity, and to easily attach and detach it to the drain pipe and the like. In order to realize such a drain tube insertion puncture device, what kind of means should be taken?

[0008]

The inventor of the present invention has focused on an injection needle and an injection needle type biopsy puncture needle. These have the tissue penetrating performance comparable to the sharpness of a female, and a human needle can be used as it is for a cow and horse. The reason why a hollow injection needle or puncture needle easily penetrates the thick and strong skin of an animal is that the needle tip is pointed like a double-edged sword, so that the skin tissue is cut like a sharp scalpel. Also, it is said that the entire peripheral edge of the substantially elliptical hole that is opened obliquely to the needle tip effectively functions as a cutting edge and penetrates the hard skin tissue while cutting it open. Therefore, as a good way to break through the skin of an animal, use a metal pipe connected to the tip of a rubber drain pipe or a metal pipe of a thickness that can insert a hard drain pipe that does not require a guide pipe. I thought that it would be better to make a needle-like puncture tube by cutting it diagonally.

However, in contrast to the above-mentioned prior art in which the tissue is pushed in while the beak is closed, the puncture tube is a new technique in which the beak is expanded and the tissue is swallowed while entering.
The following unknown concerns were worried. One is that by inserting a tube that is thicker than the existing biopsy needle, it may open a large round hole in the skin. If that happens, the wound will be hard to heal and I'm worried that it will leave an ugly scar. Another concern is that the front edge of the guide tube inserted into the puncture tube may be an obstacle and may not penetrate the skin well. If this happens, it will not be possible to use a side-hole drain pipe with a closed tip. Furthermore, there is a concern that if the tissue is cut out into a cylindrical shape like cork polar, it will be clogged in the guide tube, and it will be impossible to drain the liver and kidney. However, as a result of the experiment,
It was confirmed that both were melancholy. That is, the substantially elliptical cutting edge formed in the needle tip shape of the injection needle only cuts the skin of the animal in a half-moon shape, and there was no fear that the skin would be cut into a circle. Further, even if there was a step in the puncture tube, the tissue penetration performance was not impaired, and the skin could be punctured easily as expected. Unexpectedly, it is probably because the binding fibers, which are the source of skin toughness, are fragmented by the approximately elliptical cutting edge around the mouth of the tube, and a lump of soft scrap tissue is packed in the tube. I was considered. Therefore, even if the waste tissue is clogged to the extent that the front end of the guide tube is closed, it can be easily removed by suctioning with a pump connected to the drain tube. Therefore, it was found that the drainage had no problem. For the same reason, the use of a rigid side-drain drain tube in place of the guide tube does not cause any problems, and the waste tissue stuck in the puncture tube is pushed into the body cavity once at the closed end of the drain tube. After that, suction from the side hole.

From the above experimental results, we have gained confidence that an injection needle-like puncture tube is promising, but it is inconvenient as a drain tube insertion tool as it is. That is, even if the inner diameter of the puncture tube and the outer diameter of the guide tube are made equal and the guide tube is inserted exactly into the puncture tube, the guide tube tends to be pushed out of the puncture tube during tissue penetration. . Therefore, it is necessary to continue to hold the guide tube with the little finger of one hand that holds the puncture tube. In addition, after inserting the guide tube into the body cavity, in order to separate the puncture tube from the drain tube connected to the guide tube, in the same manner as in the above-mentioned prior art, the drain tube is inserted into the guide tube, and from the tube end. There is no other way than to pull it out. This is not inconvenient and has no practical value. Therefore, as a result of repeated trials and thought about how to make it possible to securely hold the guide tube and to easily remove it from the guide tube, the hollow puncture tube was divided into two halves vertically. I realized that it was enough to separate the individual sandwiching members, and finally the present invention could be completed.

The veterinary drainage tube insertion tool according to the present invention is
This is a solution to the above-mentioned problems and is as follows. That is, a thick needle-like puncture tube that fits the outer diameter of a guide tube connected to the drain tube or a hard drain tube that does not require a guide tube is divided into two parts in the longitudinal direction, and the two sandwiching members 1, 1 ′ are cross-sectioned. Is shaped like a semi-circle gutter, and finger holding portions 2 and 2'that can be pulled by hooking a finger or the like on each rear end portion of the sandwiching member are provided. Instead of the finger-holding portion, the movable grasping portion 7 may be connected via the supporting portions 6 and 6 ′.

If arc-shaped blades 3 and 3'are provided at the tip ends of the two sandwiching members 1 and 1 ', and both sandwiching members are faced to each other, they are substantially oval in shape similar to the needle tip of an injection needle. The puncture part 4 is formed. The shape of the arc-shaped blades 3 and 3'varies variously depending on the position where the injection needle-shaped puncture tube is divided, but when the ease of manufacture and the ease of use are combined, the type 2 shown in FIGS. Is the best. That is, FIG. 1 divides the major axis of the substantially oval puncture part 4 into two parts, and the blades 3 and 3 ′ are bilaterally symmetrical, and FIG. 2 divides the minor axis of the puncture part 4 into both parts, and the blade 3 3'is an asymmetrical shape. In either case, when the two sandwiching members are aligned as indicated by arrow A in FIG. 1 and arrow B in FIG. 2, the substantially oval puncture portion 4 is formed. The shape of the puncture portion 4 is preferably as similar to the needle tip of the injection needle as possible, but is not particularly limited. Even the puncture part 4 shown in FIG. 1 that is formed by simply cutting the metal tube at an angle can exhibit sufficient sharpness. In the puncture portion 4 formed by the asymmetrical blades 3 and 3 ′ shown in FIG.
As shown in the side view of FIG. 1, the inclination angle of the blade is set to two deep and shallow, and the sharpness of the cutting edge is adjusted. Further, as shown in the plan view of FIG. 6, it is possible to make a sharp cutting point.

The two sandwiching members 1 and 1'can be easily manufactured by vertically cutting a metal tube such as stainless steel or titanium alloy with a rotary cutter. At that time, since it is lost as shavings by the thickness of the cutter, both side edges of the two sandwiching members obtained by the cutting are thinly shaved off. Therefore, strictly speaking, the cross section does not have a perfect semicircular shape, but it is expressed as a semicircular shape because it is as close as possible to a semicircular shape. However, in practice, it is significant that the cross section is not a perfect semicircle. That is, XX in FIG.
As can be seen in FIG. 4, which shows a cross section of the part, the guide tube 8
When both the sandwiching members 1 and 1'are covered around, the thin gaps 5 and 5'are formed between the side edges of the sandwiching members by the amount scraped by the cutter. Because of this gap, it is possible to firmly hold the guide pipe 8 and the hard drain pipe by both the sandwiching members. If a thin blade cutter is used, the width of the gap becomes 0.5 mm or less.
Even if there is such a gap in the puncture portion 4, there is practically no fear of impairing the sharpness of the cutting edge. If the metal plate is press-formed into a gutter shape, the sandwiching member can have a completely semicircular cross section. However, even in that case, it is better to allow a slight gap.

[0014]

The puncture device for inserting a drain tube according to the present invention is used as follows. First, the guide pipe 8 connected to the tip of the drain pipe 9 or a hard drain pipe that does not require a guide pipe is applied to the trough-shaped recess of the one sandwiching member 1. The other sandwiching member 1'is covered there, and the rear ends of both sandwiching members 1, 1'are aligned. At this time, since the guide tube 8 and the hard drain tube serve as the shaft core, the side edges of both sandwiching members having a semicircular cross section are automatically aligned with each other to form a tubular body having a regular circular cross section. Actually, since narrow gaps 5 and 5 ′ are formed between the side edges, by grasping the matched sandwiching member with one hand, both the sandwiching members can reliably sandwich and hold the guide pipe or the hard drain pipe. . At the same time, the arcuate blades 3 and 3'provided at the tip of each sandwiching member also match, so that a substantially oval puncture portion 4 is formed at the tip of the tubular body. For this reason, the two sandwiching members 1, 1 ′ that are molded separately can be easily changed to an injection needle-shaped puncture tube.

It is preferable to keep the disinfectant solution wet when the both sandwiching members 1 and 1'are covered with a guide tube or the like. Then, the disinfecting liquid spreads between the inner surface of the sandwiching member and the outer surface of the guide tube due to the capillarity, so that strong adhesion is produced. Due to this close contact force, the sandwiching member attracted to the guide tube does not easily fall off even if the hand is released. That is, the gutter-shaped sandwiching member having a semicircular cross section acts as an excellent suction cup with the help of the liquid. Therefore, no special holding means such as a rubber sheath as in the above-mentioned prior art is required. Further, due to the close contact, there is no gap for air to enter, and the gaps 5 and 5 ′ are filled with blood bleeding during puncture due to a capillary phenomenon, so that they do not serve as an air entry path. Therefore, the animal can be stabbed with confidence.

When the puncture portion 4 reaches the inside of the body cavity, the right hand holding the pinching member is loosened and the guide tube 8 is pushed into the body cavity by the left hand. At this time, since blood and pleural effusion / ascites in the body cavity flow between the nipping member whose grip is loosened and the advancing guide tube, air does not enter the body cavity. Next, while supporting the guide tube with the left hand, the fingertips 2, 2'provided at the rear end of the sandwiching member are hooked with the fingertips of the right hand, and both sandwiching members are quickly pulled out together or one by one. At this time, since the blood and the like that have flowed into the space between the guide tube and the guide tube act as a lubricating oil, the pinching member can be slid out straight in a straight line by sliding it on the surface of the guide tube. In this way, since the cut end of the skin is not expanded, air does not enter the body cavity when the clip member is extracted. Further, since the skin maintains a strong tension just by being cut into a half moon shape, the periphery of the sandwiching member is tightly tightened. For this reason, since the incision of the skin is momentarily tightened at the same time as the clip member is pulled out, there is no possibility that air will enter the body cavity.

It is an absolute condition in the cat empyema operation to prevent air from invading the body cavity, especially the ceramic cavity, but the drainage tube puncture device of the present invention surely achieves this condition. In order to prevent air from entering the body cavity, the pinching member must be receded straight along the guide tube. Therefore, the length of the guide tube must be at least twice the length of the pinching member. In this respect, when a hard drain tube is used, even if it is bent to some extent, it can be maintained in a straight state by supporting it with one hand. Since the clip member has a semicircular cross section, it can be immediately removed from the guide tube on the spot by pulling it out of the skin. For this reason, since the mouth of the drain pipe can be externally inserted on the guide pipe, a thick drain pipe for a vacuum pump can be connected. Moreover, since it is easy to remove, it can be washed and sterilized together with other surgical instruments and reused after the operation. Since it is not disposable, it can be made of high quality metal, resulting in a sharp product. Therefore, it is more economical for veterinary hospitals than disposable ones.

[0018]

Embodiment 1 Embodiment 1 of the present invention will be described with reference to FIG. 1 and FIGS. FIG. 1 is a perspective view showing the structure and operation of the first embodiment. 3 and 5 are side views showing the usage state. FIG. 4 is a cross-sectional view taken along line XX of FIG.
In the first embodiment, semicircular finger hooks 2 and 2'are provided on the outer edges of the rear end portions of the two sandwiching members 1 and 1'each of which has a semicircular trough shape. Apart from this, a claw-shaped projection may be used, and the shape of the finger hook is not particularly limited. With such protrusions, as shown in FIG. 3, the rear ends of both the sandwiching members can be easily aligned, so that the puncture tube can be formed without touching the sharp cutting edges. Moreover, when pulling out the sandwiching member from the outside of the body, it is possible to easily pull it out by hooking the fingertip on the protruding finger hooking portion 2 as shown by an arrow D in FIG. FIG. 5 shows a state in which one of the sandwiching members 1 is pulled out, but if both are used well, both of the sandwiching members can be pulled out together, which is very convenient. The pinching member pulled out of the skin can be easily removed from the top of the guide tube 8 as shown by the arrow C in FIG.

The sandwiching members 1, 1'shown in FIG. 1 are obtained by bisecting the major axis of the substantially oval puncture part 4 into two parts.
Therefore, the arc-shaped blade 3 provided at the tip of each sandwiching member,
3'are mirror images of each other. The two sandwiching members 1, 1'formed in this way are faced to each other, and an arrow A in FIG.
By making the guide tubes 8 coincide with each other as shown in FIG. 5, an injection needle-like puncture tube can be formed with the guide tube 8 as an axis.
At this time, as shown in FIG. 4, since narrow gaps 5 and 5 ′ are formed between the side edges of both the sandwiching members, in the case of the first embodiment, a fine crack is formed at the cutting point of the puncture portion 4. However, if the width of the gap is 0.5 mm or less, the tissue penetrating performance is not hindered at all. Rather, it is advantageous because it is possible to form a sharp cutting edge by utilizing a crack as in the puncture portion 4 shown in the plan view of FIG. In addition, as shown in FIG. 4, the inner surfaces of both the sandwiching members 1, 1 ′ and the outer surface of the guide tube 8 are in close contact with each other, and the disinfectant solution and the like penetrate between them to exert an adsorption effect. It is possible to maintain the fitted state of the sandwiching member without using the fixing tool. Therefore, it is possible to pierce the thick and strong skin of the animal while holding the drain pipe while grasping both sandwiching members with one hand. However, the mark 10 for preventing the accident of excessive puncture
As an alternative, a detachable ring-shaped clip having a fixing function as shown in FIG. 3 may be used, or it may be bound with a string or a rubber band. By doing so, it is not necessary to hold firmly with one hand, and the puncturing operation will be easier. However, the mounting of the mark 10 is troublesome in an emergency, and although it is convenient if it is present, it is not indispensable.

Example 2 Example 2 will be described with reference to FIG. 2 and FIGS. FIG. 2 is a perspective view showing the second embodiment. In the second embodiment, the finger hooks 2 and 2'are holes. Although it is difficult to add a protrusion to the outer edge of the rear end of the sandwiching member as in the first embodiment, the manufacturing cost is difficult, but it is much cheaper to make a hole and the packaging of the product is not bulky. . It may be a large hole that you can hook your finger on, but a small hole or
It is also possible to simply provide a recess instead of the hole. By bending both ends of tweezers inward in a hook shape and hooking the tip of the hook into a hole or a recess, both sandwiching members can be pulled out at the same time. The sandwiching members 1 and 1'shown in FIG. 2 are obtained by dividing the minor diameter of the substantially oval puncture portion 4 into two parts. Therefore, each sandwiching member becomes asymmetrical, and the arc-shaped blade 3 provided at the tip portion,
There is no need to shape 3'to a mirror image. Therefore, for example, as shown in the side view of FIG. 3, the sharpness can be appropriately adjusted by scraping off the tip of one blade 3 ′. A puncture tool for humans with thin skin can be obtained by blunting the tip.

Third Embodiment A third embodiment will be described with reference to FIG. FIG. 6 shows the third embodiment.
FIG. As mentioned above, there is no particular inconvenience in attaching the two clip members to the guide tube by two-touch one by one, and hooking the finger on the finger hook and pulling it out of the body. For example, both the sandwiching members can be attached / detached with one touch.
That is, instead of providing the finger hooks 2 and 2 ', the movable grasping portion 7 is integrally molded or detachably attached to each rear end of the sandwiching members 1 and 1'via the supporting portions 6 and 6'. Good. However, if the end portions of both the sandwiching members are opened in a “C” shape, they cannot be pulled out after puncturing, and if they are forcibly pulled out, the cut end of the skin expands and air enters. Therefore, it is necessary to select a clipper that can separate the two clip members in parallel. For example, the grasping portion 7 shown in FIG. 6 is an application of the existing “test tube sandwich”, and the supporting portions 6, 6 ′ longer than the guide tube are respectively provided at the rear ends of the sandwiching members 1, 1 ′. The grasping portion 7 that can be grasped with one hand is connected via (partially omitted in the figure). If no force is applied to the grasping portion, both sandwiching members are aligned and sandwich the guide tube, and if the grasping portion 7 is grasped, both sandwiching members are separated in parallel. Therefore, the guide tube and the hard drain tube can be held with one touch, and both holding members can be simultaneously pulled out of the body and removed with one touch.

Fourth Embodiment A fourth embodiment will be described with reference to FIG. FIG. 7 shows the fourth embodiment.
FIG. The grasping unit 7 illustrated in the fourth embodiment is
This is an application of the existing “nasal speculum forceps”, and the guide tube 8 can be reliably clamped by the engaging means of the forceps. Further, since the supporting portions 6 and 6'bent at right angles do not interfere with the long insertion tube 8, they can be short. In this respect, Example 3
Is for sandwiching the guide tube by the spring force of the grasping portion 7, and the supporting portion is long, so the sandwiching force is slightly inferior. On the other hand, in the fourth embodiment, the engaging means of the forceps is released to separate the sandwiching members 1, 1 ', and therefore the guide tube never moves during the engagement. After puncturing into the body cavity, loosen the forceps slightly and pull out the pinching member to the outside of the skin. Therefore, if the forceps are opened wide, they can be detached from the guide tube 8 with one touch. It is an important effect common to the first to fourth embodiments that the puncture tool can be easily detached from the guide tube in this manner, and as shown in FIG. 7, the drain tube 9 is externally inserted and connected to the guide tube 8. be able to. For this reason, a thick drain pipe can be used optionally, so that the liquid can be drained by the vacuum pump.

[0023]

When using the puncture device for inserting a drain pipe according to the present invention, a guide pipe having the drain pipe externally inserted therein or a hard drain pipe not requiring a guide pipe is used as an axial core, and this is sandwiched between two independent members. By sandwiching between the members, an injection needle-shaped sharp puncture tube can be easily formed. Therefore, it is possible to easily penetrate the thick and tough skin of the animal while holding the drain pipe. Moreover, since the sandwiching member is in close contact with the surface of the guide tube or the like, air does not enter the body cavity during puncturing. After the puncture, the finger hooking portion or the grasping portion is used as a pulling-out means, and the pinching member is retracted straight to prevent air from entering the body cavity. Since the sandwiching member pulled out from the skin can be separated into two pieces, it can be easily separated from the guide tube or the like. Therefore, unlike the conventional product in which the drain pipe is removed by dragging it to the pipe end, the drain pipe can be connected not to the inside of the guide pipe but to the outside thereof. Therefore, it is possible to efficiently drain the liquid with a vacuum pump using a thick drain pipe. In addition, since it can be easily removed, it can be easily washed and sterilized after use, and can be reused. Furthermore, this puncture device for inserting a drain tube can be used for inserting all types of veterinary medical instruments other than various drain tubes into the body, and is also used for emergency tracheotomy such as tongue root subsidence that often occurs in dogs with round faces. it can. It should be noted that the animal puncture tool with a sharp cutting edge gives a sense of fear to humans, but if the cutting edge is cut to form an obtuse angle, the patient will not be afraid, so it can be used for human medical treatment.

[Brief description of drawings]

FIG. 1 is a perspective view showing the structure and operation of the first embodiment.

FIG. 2 is a perspective view showing a second embodiment.

FIG. 3 is a side view showing a usage state of the present invention.

FIG. 4 is a sectional view taken along line XX of FIG.

FIG. 5 is a side view showing a usage state of the present invention.

FIG. 6 is a plan view showing a third embodiment.

FIG. 7 is a perspective view showing a fourth embodiment.

[Explanation of symbols]

 1, 1'Clamping member 2, 2'Finger hooking part 3, 3'Blade 4 Puncturing part 5, 5'Gap 6,6 'Support part 7 Grasping part 8 Guide tube 9 Drain tube

Claims (2)

[Claims] 1. A pair of sandwiching members each having a blade at the tip portion are integrally molded, and a drain pipe or the like is inserted into a bottom hole provided at the connected rear end portion while sandwiching the drain pipe or the like by both sandwiching members. In a puncture device for inserting a drain tube that penetrates through the skin, two pinching members 1 formed in a gutter-like shape by bisecting an injection needle-shaped puncture tube having a thickness through which the drain tube and the like pass, 1 '
And a finger hook 2 provided at each rear end of the sandwiching member,
A puncture device for inserting a drain tube, which is composed of 2 '. 2. The movable grasping portion 7 is connected to each rear end portion of the sandwiching members 1, 1 ′ through a supporting portion 6, 6 ′ instead of the finger hook portions 2, 2 ′. The puncture device for inserting a drain tube according to 1.