JP7308725B2 - auricular resection tool - Google Patents

Description

TECHNICAL FIELD The present invention relates to an auricle cutting tool for excising or cutting a part of the auricle of an animal such as a cat.

In recent years, from the viewpoint of animal welfare, various activities have been attempted to reduce the culling of dogs and cats at public health centers. Among them, the main activity in cats is called TNR (Trap-Neuter-Release), and in order to prevent unnecessary breeding,
a, Capturing stray cats (T),
b. Neutralization by spaying/neutering at a veterinary hospital and excision of auricles for marking (N),
c, release to original location (R),
A series of activities such as

With the spread of such TNR activities, the number of stray cats culled has drastically decreased compared to the past, as shown in Figure 4. Figure 4 is data quoted from the Animal Welfare Management Office data of the Ministry of the Environment, where the horizontal axis indicates the year and the vertical axis indicates the number of dogs and cats culled. In addition, in response to the stray cat problem, which is often talked about, such as abnormal breeding, fecal odor, scavenging, and barking, we recognize that animals are living things, and instead of killing them, we adopt the Animal Welfare and Management Act. In accordance with this principle, some governments have established subsidy systems to actively promote contraception and neutering of stray cats. Considering that most of the cats that are culled are kittens born from feral cats, TNR activity is considered to have contributed greatly to the reduction in the number of culled cats.

There are four reasons why cats are believed to have a higher reproductive rate than other animals such as dogs.
(1) Cats are mating ovulators, so the pregnancy rate is high Female cats ovulate when stimulated by male cats to mate, so the fertilization rate after a single mating is very high at about 90%. In addition, due to the large number of ovulations, the number of kittens born per birth is extremely high, averaging 4 to 8.
(2) Cats have a short gestation period Female cats have an average gestation period of 63 days (approximately 2 months), so they can give birth two to three times a year and are 5 to 7 years old on average. Repeat childbirth until about
(3) Short time to sexual maturity of kittens Female kittens reach sexual maturity, and the period until they can give birth is as fast as 5 to 6 months after birth. In male cats, estrus begins at 5 to 6 months after birth, which is very early as in female cats.
(4) There are environmental factors in Japan, such as global warming, which is an environment that is advantageous for cats to breed. Also, unlike the previous developing era, Japanese people's sense of cats has changed from "creatures" to "pet animals", and in the trend of "poor" and "cat boom", stray cats are carelessly treated. More and more people are feeding them. For this reason, although natural selection is supposed to maintain a certain number of individuals, it is also a cause that the nutritional state becomes better and contributes to breeding.
From these points, it is recognized that the TNR activity described above is extremely effective in reducing the number of cats culled.

By the way, in the TNR activities, as described above, contraception/neutering and auricle removal are performed at animal hospitals. The reason why stray cats are spayed or neutered is to remove the tips of their ears in a V shape (commonly known as "Sakuramimi") to prevent them from being recaptured or opened again after being released. Auricle resection is performed as a mark indicating this.

FIG. 5 shows the procedure for conventional auricle resection. Cat CA is under anesthesia after surgery such as contraception, and as shown in FIG. The ear CB is pinched and compressed with forceps 900 to cut off blood flow to the tip of the ear. Then, in this state, the auricle cartilage of the ear CB is cut in a V shape with surgical scissors 902, as shown in FIG. After cutting, a hemostatic agent is applied to the cut site if necessary, and the forceps 900 are removed from the ear CB as shown in FIG.

Background art for cutting the ear of an animal includes, for example, "Apparatus for Collecting Tissue from Rodent Animals" described in Patent Document 1 below. The purpose of this is to facilitate the collection of tissues from the tails and ears of rodents such as mice without contamination with other individual tissues. , in a state in which the tissue-collecting site of the rodent is supported in a spaced manner so that it can be inserted, the cutting blade is made to move relative to cut the inserted tissue-collecting site, and the cut tissue-collecting site is placed in the container. It is designed to accommodate.

Japanese Patent Application Laid-Open No. 2009-195151

However, the conventional method shown in FIG. 5 has the following problems.
(1) There is physical stress on the animal side, and there is mental stress on the human side. That is, even under anesthesia, most of the time, the treatment of the tip of the ear is painful, and the animal feels some pain and responds to painful stimuli. In addition to feeling pain when pinched with forceps, cartilage is an elastic tissue, so it is somewhat difficult to excise with surgical scissors, and if the treatment is difficult, the animal feels more pain, and the human psychology. It seems that it is also complicit in the stress. In addition, bleeding may occur when the forceps are released after resection and hemostasis, and further pain may be experienced when the forceps are used again to stop bleeding.
(2) It is desired to shorten the time for TNR. Due to the high breeding rate of stray cats, if TNR activities are carried out in the area, it is necessary to operate every single stray cat in the area. For this reason, the number of operations performed on a single day ranges from several to several tens of animals, and it is necessary not only to shorten the overall operation time but also to shorten the time required for auricle resection itself. Since TNR specialty hospitals perform more surgeries, there is a further demand for shortening the treatment time.

The present invention focuses on the above points, and aims to alleviate stress in both animals and humans and to shorten the treatment time in TNR.

The present invention is an auricle resection tool for resecting the auricle of an animal, comprising a hemostatic means for stanching the auricle of the animal to stop bleeding, a resection means for resecting the auricle, and operations of the hemostatic means and the resection means. and an operation restricting means for restricting the operation so that the auricle is excised by the excision means after the bleeding is stopped by the hemostasis means.

According to one main form, at least one of said means is transparent. According to another aspect, the clamping means includes an upper plate, an intermediate plate, and a lower plate, the hemostatic means is forceps provided facing the intermediate plate and the lower plate, respectively, A cutting means is provided on the upper plate and passes through the intermediate plate. Alternatively, spring means are provided between the upper plate and the intermediate plate. According to yet another embodiment, said animal is a cat or dog, and said hemostatic means and cutting means are substantially V-shaped. The foregoing and other objects, features and advantages of the present invention will become apparent from the following detailed description and accompanying drawings.

According to the present invention, the hemostasis operation of the ear with forceps and the subsequent excision operation of the ear with the excision blade can be performed with simple operations. Time can be shortened well.

1 is a perspective view showing an auricle resection tool according to one embodiment of the present invention; FIG. It is a figure which shows the mode of excision by the auricle excision tool of the said Example. FIG. 3 is a diagram showing the operation of the auricle removing tool viewed in the direction of the arrow along line #3-#3 of FIG. 2; It is a figure which shows the transition of the number of dogs and cats culled. It is a figure which shows the conventional auricle resection method.

BEST MODE FOR CARRYING OUT THE INVENTION The best mode for carrying out the present invention will now be described in detail based on examples.

An embodiment of the present invention is shown in FIG. , and a lower plate 40 . Then, as shown in FIG. 2, the ear CB of the cat CA is sandwiched and the upper plate 20 and the lower plate 40 are closed to cut off a portion of the ear CB.

One end of the upper plate 20 is bent in an L shape, and a pair of arms 24 extend from the tip of the bent end 22 . Next, the intermediate plate 30 is bent in a substantially V shape, and a pair of arms 34 extend from the tip of the bent end 32 . On the other hand, on the rear end side of the lower plate 40, a pair of rotating shafts 42 are formed to protrude from the side surface. The rotation shaft 42 passes through the arm 24 of the upper plate 20 and the arm 34 of the intermediate plate 30 described above, so that the upper plate 20 and the intermediate plate 30 are rotatable with respect to the lower plate 40. It has become.

FIG. 3(A) shows a main cross section viewed in the direction of the arrow along line #3-#3 of FIG. 2(A). are provided. The cutting blade 26 is exposed on the lower plate 40 side through the opening 36 of the intermediate plate 30 . A pressure spring 28 is provided between the upper plate 20 and the tip of the intermediate plate 30 ahead of the cutting edge 26 . The pressing spring 28 acts to press or urge the intermediate plate 30 downward. A substantially V-shaped forceps 38 is provided below the intermediate plate 30 so as to surround the cutting edge 26 . On the other hand, a substantially V-shaped forceps 48 is provided on the upper side of the lower plate 40 so as to face the forceps 38 .

In this manner, the forceps 38 and 48 are provided on the intermediate plate 30 and the lower plate 40, respectively, and the cutting edge 26 is provided on the upper plate 20 by penetrating the intermediate plate 30, thereby stopping bleeding by the forceps 38 and 48. The operation is restricted so that the cutting edge 26 cuts the ear CB later.

By the way, in this embodiment, the upper plate 20, the intermediate plate 30, and the lower plate 40 are made of transparent plastic, for example. For this reason, the veterinarian who performs auricle resection can pinch the ear CB while confirming the positions of the cutting blade 26 and the forceps 38 and 48 when pinching the ear CB of the cat CA with the auricle removal tool 10. It has become. Further, like a stapler, a plate spring or a coil spring (not shown) urges the upper plate 20 and the lower plate 40 to open. When the pressing force is relaxed after the lower plate 40 is closed, the upper plate 20 and the lower plate 40 are naturally opened.

Next, the operation of the above embodiment will be described with reference to FIGS. 2 and 3 as well. The cat CA whose ear CB is to be removed is under anesthesia due to surgery such as contraception. The veterinarian performing the treatment holds the auricular removal tool 10, which has been sterilized, in his hands, and pinches the ear CB of the cat CA as shown in FIGS. 2(A) and 3(A). At this time, as described above, since the auricle resecting tool 10 is made of a transparent material, the ear CB can be pinched while confirming the positions of the resecting blade 26 and the forceps 38 and 48 . When the upper plate 20 and the lower plate 40 are pressed while holding the ear CB, the ear CB is held between the forceps 38 and 48 as shown in FIG. 3(B). As a result, hemostasis to the excision site is achieved.

When the upper plate 20 and the lower plate 40 are further pressed down, the forceps 38 oppose the forceps 48 with the ears CB in between, and the forceps 48 are restricted in movement. It will be pushed to the 40 side. Therefore, the cutting blade 26 is pushed down, and the ear CB is cut by the cutting blade 26 as shown in FIG. 3(C). CC indicates the excision site. As described above, since the cutting blade 26 is V-shaped, the ear CB is cut in a V-shape as shown in FIG. 2(B).

As described above, this embodiment has the following effects.
a. Hemostasis and excision can be performed by a simple operation in a short time, and the treatment time is short. Therefore, auricle resection for many cats can be efficiently performed in a short time.
b. It is easy to operate and reduces stress not only on cats but also on humans.

The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention. For example:
(1) The shape and structure described above are examples, and any structure may be used as long as it has a means for stopping bleeding using forceps and a means for cutting the auricle after stopping bleeding.
(2) Although the above embodiments apply the present invention to excision of the auricle of cats, this does not preclude the application of the present invention to animals other than cats, such as dogs. Also, the shape of the cut may be an appropriate shape other than the V shape, and the cut may be made at a plurality of locations.
(3) The same effect can be obtained even if the auricle removing tool 10 shown in the above embodiment is turned upside down. In this case, the upper plate 20 is on the lower side and the lower plate 40 is on the upper side. Moreover, the vertical positional relationship is also determined for convenience, and it may be used horizontally.
(4) Regarding the facing surfaces of the forceps 38, 48, when the upper plate 20 is pushed down against the lower plate 40, the entire facing surfaces of the forceps 38, 48 may press the ear CB almost simultaneously. , the opposing surfaces of the forceps 38 and 48 may be used to press the ear CB little by little to stop the bleeding. The same is true for the cutting blade 26, but when the entire cutting blade 26 cuts the ear CB almost simultaneously, the load at the time of cutting is large, so the cutting edge is set to cut gradually to reduce the load. good too. For example, the cutting blade 26 may have a rounded shape from the front to the rear of the ear cutting tool 10 .
(5) A receiving portion (cutting board) for receiving the cutting edge may be provided inside the lower plate 40 at a portion of the upper plate 20 that the cutting blade 26 hits.
(6) A replaceable blade function that allows the cutting blade 26 to be replaced may be provided. Various structures are conceivable, such as sandwiching the excision blade in narrow grooves and attracting the excision blade with a magnet. The forceps 38, 48 may also be similarly exchangeable. Further, a receiving plate may be provided on the portion of the lower plate 40 that the cutting blade 26 hits, or another blade may be provided that meshes with the cutting blade 26 to perform cutting.

According to the present invention, the hemostasis operation of the ear with forceps and the subsequent excision operation of the ear with the excision blade can be performed with simple operations. Since the time can be shortened well, it is suitable for auricle resection in TNR, for example.

10: Auricular resection tool 20: Upper plate 22: Bending end 24: Arm 26: Cutting blade 28: Pressure spring 30: Intermediate plate 32: Bending end 34: Arm 36: Openings 38, 48: Forceps 40: Lower plate 42: Rotating shaft 900: forceps 902: surgical scissors CA: cat CB: ear CC: excision site

Claims (4)

An auricular resection tool for resecting the auricle of an animal,
Hemostasis means for pinching the auricle of the animal to stop bleeding,
resection means for resecting the auricle,
clamping means for performing the actions of the hemostatic means and the cutting means;
operation restricting means for restricting the operation so that the auricle is excised by the excision means after the bleeding is stopped by the hemostasis means;
and
The holding means comprises an upper plate, an intermediate plate and a lower plate,
the hemostatic means are forceps provided facing the intermediate plate and the lower plate, respectively;
An auricle resecting tool, wherein the resecting means is provided on the upper plate and penetrates through the intermediate plate . 2. The auricle cutting tool according to claim 1, wherein at least one of said means is transparent. 3. The auricle cutting tool according to claim 1, wherein spring means are provided between said upper plate and said intermediate plate. The auricle excision tool according to any one of claims 1 to 3 , wherein the animal is a cat or a dog, and the hemostatic means and excision means are substantially V-shaped.

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