JP2007124934A - Needle for embedding, method for producing needle for embedding, and method for forming embedding port of microchip by needle for embedding - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a needle for embedding, capable of making the wound formed for embedding small because the needle for the embedding having an inner diameter thicker than an embedding article is required to be adopted for embedding the embedding article such as a microchip in the body. <P>SOLUTION: The needle 1 for the embedding is constituted as follows. A blade part 1a formed at the tip part is constituted of a sharp blade part 1c formed at the tip side and a dull part 1d formed at the base side. As a result, the needle penetrates the skin while incising a part to be incised in the skin, and thereafter while pushing out the incised part by the dull part 1d while evading the incision as possible to reduce the wound so as to be smaller than that by a conventional needle for the embedding wherein the whole blade part 1a is sharp, to enable the wound to be cured soon, and to reduce the damage on a small animal. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an implantation needle for embedding an in-vivo implant such as a microchip in an animal body such as a mouse, a rat, a rabbit, a dog, a cow, or a pig, a method for producing an embedding needle, and a microchip implantation port. It belongs to the technical field of forming methods.

In general, the seed-embedding needle is usually manufactured using a metal such as stainless steel. However, in the case of being made of metal, there is a problem that not only incineration cannot be performed after use, but also the production becomes troublesome and complicated and the cost is increased. In view of this, it has been proposed that not only incineration can be performed but also that the production is easy and the production cost is low, and the production is performed using a synthetic resin material (see, for example, Patent Document 1).
JP-A-9-9811

  By the way, these needles need to have a sharply inclined blade surface portion for insertion into the skin of an animal. As an implantation needle, for example, an implant is a diameter such as a microchip. However, if it is about 2 mm, it is necessary to use a needle that is thicker than this even for the inner diameter. And since the conventional blade surface portion is configured to cut the skin by forming the entire tip portion sharply even with such a thick needle, when the blade surface portion is inserted into the skin of an animal, the needle There is a problem that a large wound corresponding to the outer diameter of the film is formed, and the wound is difficult to heal. Moreover, if such a large wound is given to a small animal such as a rat or a mouse, the small animal may be damaged so much that the animal may be weakened, or gonorrhea may enter and cause death. There are problems to be solved by the present invention.

The present invention was created with the object of solving these problems in view of the above circumstances, and the invention of claim 1 is characterized in that the inclined blade surface portion is inserted into an animal in a microscopic state. An embedding needle for embedding an in-vivo implant such as a tip, wherein the blade surface portion is a sharp blade portion on the distal end side and a blunt portion on the proximal end side which is not sharp.
A second aspect of the present invention is the embedding needle according to the first aspect, wherein the needle is made of a hard synthetic resin material.
The invention of claim 3 is the needle for embedding according to claim 2, wherein the synthetic resin material is polycarbonate.
According to a fourth aspect of the present invention, in any one of the first to third aspects, the needle is formed by injection molding, the blunt portion of the blade surface portion is formed by the injection molding, and the blade portion is formed by the blunting. The needle for embedding is formed by cutting or polishing a portion corresponding to a blade portion formed by injection molding in a state following the portion.
The invention according to claim 5 is a method for manufacturing an implantable needle for embedding an in-vivo implant such as a microchip in a state where an inclined blade surface portion is inserted into an animal, and the entire needle is formed by injection molding. The blade surface portion is formed by forming the blunt portion on the proximal end side and the portion corresponding to the blade portion on the distal end side following the blunt portion by the injection molding, but forming the blade portion corresponding portion into a sharp blade portion by cutting or polishing. This is a method for manufacturing an implantable needle.
The invention of claim 6 is the method for manufacturing an embedding needle according to claim 5, wherein the needle is formed of a synthetic resin material.
The invention according to claim 7 is a method for forming an embedding port for embedding a microchip in the body using a cylindrical embedding needle having an inclined blade surface portion inserted into an animal. After inserting while cutting the skin with a sharp blade formed on the distal end side of the surface portion, the mouth to be embedded is extended by the non-sharp blunt portion formed on the proximal end side of the blade surface portion. This is a method for forming a microchip embedding port using an embedding needle.
The invention of claim 8 is the method of forming a microchip embedding port by the embedding needle according to claim 7, wherein the needle is made of a synthetic resin material.

According to the invention of claim 1 or 7, the blade surface portion has a sharp blade portion on the distal end side and is easy to be inserted into the skin of an animal, but the proximal end side which has become a blunt portion removes the skin. It is possible to prevent the wound from becoming larger due to the spread, and the implant can be implanted in a small animal with little damage.
By using the invention of claim 2, 6 or 8, there is an advantage that by using a synthetic resin agent, the production can be simplified and the cost can be reduced and incineration can be performed.
According to the invention of claim 3, it is possible to manufacture an embedding needle using a highly versatile polycarbonate, so that the manufacture is easier and the manufacturing cost can be further reduced.
According to the invention of claim 4 or 5, the embedding needle can be easily manufactured by injection molding, and the blunt portion of the blade surface portion may be left as it is formed by injection molding, and only the tip blade portion is formed. It is sufficient to form sharply by cutting or polishing, so that the number of cut or polished portions is reduced, and the manufacturing is further simplified.

  Next, embodiments of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes an embedding needle 1, which is made of a hard synthetic resin material such as polycarbonate or polyacetal, and is formed in a hollow cylindrical shape having a blade surface portion 1a having an inclined cross section at the tip. Has been. The inner diameter of the implantation needle 1 is set so that the implant 2 embedded in the animal body can be inserted movably. Incidentally, examples of the implant 2 include a microchip capable of reading and writing various kinds of electronic information, a solid medicine, a capsule containing a medicine, and the like.

  As described above, the embedment needle 1 includes the blade surface portion 1a formed in a state where the distal end portion is cut in an inclined shape, and the end surface portion of the tubular portion 1b on the proximal end side is attached to the embedment tool 3 described later. The blade surface portion 1a has a sharp pointed blade portion 1c located on the distal end side and a blunt portion 1d not located sharply located on the proximal end side. ing. And in this Embodiment, the said blade part 1c is slightly to the front end side position Y rather than the position X used as the diameter of the needle 1 for embedding, and the base end side becomes a blunt part 1d rather than this position Y. However, as a matter of course, the blade portion 1c may be formed from the diameter position X to the base end side position as in the second embodiment described later.

  The embedding needle 1 is molded by injection molding using a mold, but since the injection molding technique is generally known, its details are omitted. Thus, the embedding needle 1 is formed by cutting or polishing the corresponding portion 1e in which the portion 1e corresponding to the blade portion 1c on the distal end side is formed together with the blunt portion 1d and the cylindrical portion 1b by the injection molding. It is formed by processing into the sharp blade part 1c.

  Incidentally, the blade surface portion 1a formed on the embedding needle 1 is formed to have a blade portion 1c on the distal end side and a blunt portion 1d on the proximal end side. However, in a mold used for injection molding, It is difficult to obtain a sharpness sufficient for insertion, and therefore, the blade portion 1c is formed with a portion 1e of the blade portion phase, and the portion 1e is cut or polished to ensure the necessary sharpness. As for the blunt part 1d, it is sufficient that it is molded by a mold. The blunted part 1d is a state in which it is injection-formed as it is, but the blunt part is polished, cut, or the like. Of course, 1d can be formed.

Subsequently, a method of using the embedding needle 1 will be described. In the present embodiment, a case where the microchip 2 is employed as an embedded object will be described.
The embedment needle 1 is used by assembling a proximal end portion into the embedment tool 3, and the embedment tool 3 has a holding portion 3 a for inserting and holding the proximal end portion of the embedment needle 1 at the distal end. A core rod 3b formed on the embedment tool 3 and movably provided is forcedly moved to the distal end side by being pushed by an operation portion 3c provided at the base end of the core rod 3b. The microchip 2 filled in 1 is embedded in the skin of an animal. In the figure, reference numeral 3d denotes a finger hooking unit, and 3e denotes a return erection unit that returns the operation unit 3c to its original position.

The implanting needle 1 is inserted into the animal's skin with the microchip 2 mounted and attached to the implanting device 3, and the insertion is performed by the tip of the blade portion 1c being inserted into the animal's skin. As the implantation needle 1 is inserted, the blade 1c is inserted while opening the skin to form an incision (not shown). Next, when the needle 1 for embedment is further stabbed, the needle 1 is inserted into the blunt portion 1d from the blade portion 1c, but the blunt portion 1d is not as sharp as the blade portion 1c. The incision is pushed and spread into the skin. The blade surface portion 1a is completely inserted into the skin and part of the distal end side of the cylindrical portion 1b is inserted, whereby the insertion of the implantation needle 1 is completed.
Then, in this insertion state, the microchip 2 is implanted by pressing the operating portion 3c to push out the microchip 2 filled in the implantation needle 1, and then the implantation needle 1 is pulled out from the animal.

  In the embodiment of the present invention configured as described above, the microchip 2 is embedded in the skin of an animal using the implanting needle 1, and the embedding needle 1 is a blade formed at the tip portion. After the surface portion 1a is composed of a sharp blade portion 1c formed on the distal end side and a blunt portion 1d formed on the proximal end side, it is inserted while opening the incision portion in the skin with the sharp blade portion 1c. The blunt part 1d avoids further incision as much as possible and pushes the incision part so that the incision part is widened. As a result, the incision is made in comparison with the conventional implantation needle in which the blade surface part 1a is all sharp. Since the size of the part (wound) can be reduced, the wound is healed quickly and the damage to small animals can be reduced.

  Moreover, in this case, since the embedding needle 1 is molded by injection molding using polycarbonate which is easily available as a material, it can be incinerated after use. Moreover, the embedding needle 1 can be used without any processing on the blunt portion 1d and the cylindrical portion 1b of the blade surface portion 1a formed by the injection molding, and the blade portion 1c is formed by the injection molding. It is only necessary to sharpen the corresponding portion 1e by machining such as cutting or polishing. As a result, the machining area becomes wider as in the case of sharpening the entire blade surface portion 1a as in the prior art. The processing efficiency is improved.

  Of course, the present invention is not limited to the above-described embodiment, and may be the second embodiment shown in FIG. That is, the embedding needle 4 is formed until the blade portion 4b processed in a sharp state on the distal end side of the blade surface portion 4a is located at a position beyond the diameter position X. Can also implement the present invention.

  Furthermore, according to the present invention, the embedding needle can be formed using a metal material such as stainless steel, but in this case, the blade surface portion is formed by cutting or polishing, and thus becomes sharp, and there is a blunt portion. Can be further processed to be in a dull state.

(A), (B), (C), and (D) are a front view, a plan view, a bottom view, and a perspective view of an embedding needle, respectively. (A), (B) is a top view which shows the assembly | attachment state of the needle for embedding, respectively. (A) and (B) are perspective views before and after forming the blade portion of the embedding needle, respectively. (A), (B), (C), and (D) are a front view, a plan view, a bottom view, and a perspective view, respectively, of an embedding needle in the second embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Needle for embedding 1a Blade surface part 1b Cylindrical part 1c Blade part 1d Blunt part 1e Blade part equivalent part 2 Implant (microchip)
3 Embedding tools

Claims (8)

An implantation needle for embedding an in-vivo implant such as a microchip in a state where an inclined blade surface portion is inserted into an animal,
The needle for implantation is characterized in that the blade surface portion is a sharp blade portion on the distal end side and a blunt portion on the proximal end side which is not sharp.   2. The embedding needle according to claim 1, wherein the needle is made of a hard synthetic resin material.   The needle for embedding according to claim 2, wherein the synthetic resin material is polycarbonate.   4. The method according to claim 1, wherein the needle is formed by injection molding, the blunt portion of the blade surface portion is formed by the injection molding, and the blade portion is injection molded in a state following the blunt portion. An embedding needle characterized in that it is formed by cutting or polishing a portion corresponding to the blade portion formed by the above. A method for producing an implantable needle for embedding an in-vivo implant such as a microchip in a state where an inclined blade surface portion is inserted into an animal,
The entire needle is formed by injection molding,
The blade surface portion is formed by forming the blunt portion on the base end side and the portion corresponding to the blade portion on the distal end side following the blunt portion by the injection molding, but the portion corresponding to the blade portion is formed into a sharp blade portion by cutting or polishing. The manufacturing method of the needle for implantation characterized by these.   6. The method for manufacturing an embedding needle according to claim 5, wherein the needle is made of a synthetic resin material. A method for forming an implantation port for embedding a microchip in a body using a cylindrical implantation needle having an inclined blade surface inserted into an animal,
After inserting while cutting the skin with a sharp blade portion formed on the distal end side of the blade surface portion, the incised portion is pushed and spread with a non-sharp blunt portion formed on the proximal end side of the blade surface portion. A method of forming a microchip embedding port with an embedding needle, wherein an embedding port is formed.   8. The method for forming a microchip embedding port with an embedding needle according to claim 7, wherein the needle is made of a synthetic resin material.

Images