JP2000135286A - Injection needle for animal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an injection needle for animals which is prevented from being inserted alone into a body and can be securely drawn out of the body if the needle is broken at the time of injection, and which can be visually recognized in the dark. SOLUTION: This injection needle has a connecting part 14, a fixing part 15, and a holding material 13. A hollow barrel 2 is connected to a lumen 14b of the connecting part 14. The base end of a metal needle 12 is fixed at about the center of the top end of the fixing part 15, and the fixing part 15 has a lumen 15a which communicates with the connecting part 14 and the lumen of the metal needle 12. The holding material 13 is located between the connecting part 14 and the fixing part 15, and has a lumen 16a which communicates with the connecting part 14 and the lumen 15a of the fixing part 15. And a soft part 16, whose strength is weaker than the connecting part 14 and the fixing part 15, is integrally formed in the holding material 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of an animal injection needle.

[0002]

2. Description of the Related Art FIG. 2 is a schematic view of a conventional syringe using an animal injection needle. In the figure, 1 is a syringe, 2 is a syringe barrel (also referred to as a barrel) of the syringe 1, a scale or the like is marked on a side surface thereof, a collar portion 3 is provided at one end, and a luer tip 4 is provided at the other end. Is protruding. 5 is a syringe 2
A handle 6 which also serves as a stopper and an operation of the plunger 5 is provided at one end.
The other end is provided with a rubber chip 7 slidably contacting the inner periphery of the syringe barrel 2.

[0003] Reference numeral 8 denotes an injection needle for animals, which comprises a metal needle 9 and a needle base 10 to which the metal needle 9 is inserted and fixed at the center of one end. 2 luer chip 4. The syringe 1 is composed of a syringe 2, a plunger 5, and an animal needle 8.

[0004] The conventional animal injection needle 8 constructed as described above.
When an injection is made into an animal using a syringe, first, the needle base 10 of the animal injection needle 8 is firmly connected to the luer tip 4 of the injection cylinder 2, and the handle 6 of the plunger 5 is pulled to pull the injection cylinder 2.
Inhale the drug solution inside. Next, the operator slightly presses the handle to check whether or not the drug solution comes out of the metal needle 9. After checking, the drug solution in the syringe 2 is injected into the animal by inserting the metal needle 9 into the body (blood vessel or the like) of the animal.

[0005]

In general, when an injection is performed on a rapidly moving animal such as a pig, the injection needle often breaks due to rampage during the injection. If the metal needle at this time remains in the animal's body and passes to the processor as meat, the teeth of the electric motor hit the metal needle in the meat mass when cutting the meat mass, and the metal needle was skipped. Workers were often injured and damaged the teeth of the electric saw. In addition, there were cases where metal needles were mixed in processed meat products, which became a problem in school lunches. For this reason, processors are very nervous in removing metal needles, and there is a need to develop a method for removing metal needles cheaply, simply, and reliably.

When an injection is made to an animal using the conventional animal needle 8 as described above, the animal often moves at the time of injection. At the connection between the metal needle 9 and the needle base 10 shown in A, only the metal needle 9 stabbed the body of the animal, and it was very difficult to pull out the thin and hard to grasp metal needle 9. In addition, there is a possibility that the stuck metal needle 9 may enter the body and damage a meat processing worker or a consumer who eats the processed meat.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem. Even if the injection needle is broken during injection, the needle alone can be prevented from penetrating into the body and held at that position. Another object of the present invention is to provide an animal injection needle that can be easily visually recognized from the outside and can be reliably extracted, and has high visibility in a dark place and has detectability with a metal detector. It is.

[0008]

According to the present invention, there is provided a veterinary injection needle according to the present invention, wherein the inner cavity is tapered so that the diameter thereof is reduced toward the distal end, and a connecting portion in which the injection tube is connected to the inner cavity; The base end of the metal needle is inserted and fixed at the approximate center of the part,
A fixed portion having a lumen communicating with the lumen of the connecting portion and the lumen of the metal needle at a substantially central portion on the base end side, and a lumen and a fixed portion of the connecting portion located between the connecting portion and the fixed portion; And a holding body formed integrally with a fragile portion having a strength lower than the strength of the connecting portion and the fixing portion, having a lumen communicating with the lumen.

In the veterinary injection needle according to the present invention,
The outer shape is smaller than the outer shapes of the connection portion and the fixing portion.

[0010] The veterinary injection needle according to the present invention has a fragile portion,
It is made of a material having a lower shearing force than the material of the connecting portion and the fixing portion.

[0011] In the veterinary injection needle according to the present invention, the base end of the metal needle is provided so as to be located in the lumen of the fixing portion and on the distal end side of the fixing portion.

In the veterinary injection needle according to the present invention, at least a part of the holder is made of a synthetic resin material containing at least one of a luminous pigment, a fluorescent pigment and a fluorescent paint.

The veterinary injection needle according to the present invention is obtained by coating at least a part of a holder with a paint containing at least one of a phosphorescent pigment, a fluorescent pigment and a fluorescent paint.

[0014] In the animal injection needle according to the present invention, the luminous pigment is a zinc sulfide-based luminous pigment containing zinc sulfide / copper as a main component.

The veterinary injection needle according to the present invention uses a fluorescent pigment and a fluorescent dye as organic substances.

An animal injection needle according to the present invention comprises a metal needle,
It is made of stainless steel having a magnetic permeability of 1.03 or more, preferably 1.10 or more.

[0017]

FIG. 1 is a schematic view of an embodiment of the present invention. The same parts as those in the conventional example described with reference to FIG. 2 are denoted by the same reference numerals, and description thereof will be omitted. In the figure, reference numeral 11 denotes an animal injection needle which is connected to the luer tip 4 of the injection cylinder 2 and constitutes the syringe 1, and is constituted by a metal needle 12 and a holder 13.

The metal needle 12 is made of a metal material such as stainless steel, for example, and is subjected to rapid cooling and strong stretching in a stretching step, which is one of the manufacturing steps, to have a magnetic permeability μ of 1.03 or more, preferably It is formed to have a magnetic permeability of 1.10 or more.

The holder 13 is made of, for example, a synthetic resin material such as polycarbonate or polypropylene containing at least one of a luminous pigment, a fluorescent pigment and a fluorescent paint. The holder 13 has a flange 14a on the outer periphery of the base end, and the inner cavity 14b is formed in a tapered shape with a diameter reduced toward the distal end. The luer tip 4 of the injection cylinder 2 is provided in the inner cavity 14b. A substantially cylindrical connecting portion 14 to be connected, and a proximal end of the metal needle 12 inserted through a substantially central portion on the distal end side and fixed with an adhesive, for example, and a lumen 14b of the connecting portion 14 on the proximal end side And a substantially cylindrical body having a lumen 15a communicating with the lumen of the metal needle 12 and having a body portion having an outer diameter substantially equal to the outer diameter of the connection portion 14 and a distal end portion having an outer diameter reduced toward the distal end. Fixing portion 15 and the lumen 1 of the connecting portion 14
4b and a lumen 16 communicating with a lumen 15a of the fixing portion 15
a, which has an outer diameter smaller than the outer diameter of the connecting portion 14 and the outer diameter of the body of the fixing portion 15, and is formed by a fragile portion 16 formed to be weaker than the connecting portion 14 and the fixing portion 15. ing.

Here, the luminous pigment contained in the synthetic resin material constituting the support 13 does not contain a radioactive substance,
Zinc sulfide phosphorescent pigments containing zinc sulfide / copper as a main component and having a good balance between safety and performance are preferable, and the fluorescent pigments and fluorescent dyes are preferably organic fluorescent pigments and organic fluorescent dyes.

When injecting an animal using the thus configured animal injection needle 11, first, the luer tip 4 of the injection cylinder 2 is connected to the connecting portion 14 of the holder 13 of the animal injection needle 11.
Is firmly connected, and the handle 6 of the plunger 5 is pulled to suck the drug solution into the syringe 2. Next, the plunger 5 is slightly pressed to check whether or not the drug solution comes out of the metal needle 12 of the animal injection needle 11, and after checking, the metal needle 12 is stabbed into the animal body (blood vessel or the like) and the drug solution in the syringe 2 is checked. Is injected into animals. At this time, when the animal moves and the animal injection needle 11 is bent by the force, stress concentrates on the fragile portion 16, and the animal injection needle 11 moves from the fragile portion 16, which is weaker than the connecting portion 14 and the fixing portion 15. Break. Then, the broken animal injection needle 11 is attached to the fixing portion 1 while being stuck in the animal body.
5 prevents the animal from entering the body of the animal, prevents the animal from entering the body, allows the animal to be visually recognized from the outside, and allows the user to easily grasp the fixing portion 15 and remove it. Further, the fixing portion 15 of the holder 13 made of a synthetic resin material containing a luminous pigment or the like can be easily recognized even in a dark place by the light of the luminous pigment.

As described above, even when the injection needle 11 for an animal is broken during the operation of injection into an animal, the diameter is smaller than the outer diameter of the connecting portion 14 and the fixing portion 15 of the holder 13 and the strength is low. Since the holding member 13 is broken from the fragile portion 16, the fixing portion 15 remaining on the metal needle 12 prevents only the metal needle 12 from entering the body of the animal, and the fixing portion 15 easily attaches the metal needle 12. Can be extracted.
The portion where the metal needle 12 is fixed is a fixing portion 15.
Is not fixed at the fragile portion 16 and the connecting portion 14 only at the distal end side of the metal needle 12, a sufficient force against the direction in which the metal needle 12 is pulled out is obtained, and the fixed portion 15 remaining on the metal needle 12 side is removed from the metal needle 12 by the metal needle 12. There is no danger that the metal needle 12
Only metal needle 1 is prevented by preventing only
2 can be withdrawn. Further, since the fragile portion 16 is located between the connecting portion 14 and the fixing portion 15 and closer to the connecting portion 14 than the base end of the metal needle 12, when the animal injection needle 11 is broken, the fragile portion 16 is fragile. The entire portion 16 is less likely to be torn and the fixing portion 15 and the connecting portion 14 are not completely separated from each other, and the metal needle 12 can be pulled out in a partially connected state, facilitating post-processing of the broken animal injection needle 11. Can be

Since the holding body (fixing portion 15) is made of a synthetic resin material containing a luminous pigment or the like, the fixing portion 12 remaining on the metal needle 12 side of the broken animal injection needle 11 is formed. With this light, the position can be easily recognized even in a dark place, and the animal needle 11 with high visibility that can be easily post-processed for the broken animal needle 11 can be obtained. Also, since the metal needle 12 has magnetic permeability, even if only the metal needle 12 enters the body of the animal,
The metal needle 12 can be detected by the metal detector,
It is possible to obtain the animal injection needle 11 having no risk of damaging the consumer.

Although the embodiment of the present invention has been described above, the present invention is not limited to this, and can be appropriately modified, for example, as follows. (1) In the above-described embodiment, the case where the entire holding body 13 is made of, for example, a synthetic resin material containing a luminous pigment is shown. May be constituted by a synthetic resin material containing a phosphorescent pigment or the like in the synthetic resin material, and a paint containing at least one of a luminous pigment, a fluorescent pigment and a fluorescent dye, and At least a part (particularly, the fixing portion 15) may be painted.

(2) In the above-described embodiment, the connecting portion 1
4. Although the case where the fixing portion 15 and the fragile portion 16 are formed in a substantially cylindrical shape has been described, the present invention is not limited to this. .

(3) In the above embodiment, the holding member 13
Is made of the same material.
6 may be made of a material having a lower shearing force than the material of the connecting portion 14 and the fixing portion 15. In this case, the same effect can be obtained.

(4) In the above embodiment, the metal needle 12
Is inserted into the fixing portion 15 and fixed by an adhesive or the like, but the metal needle 12 is attached to the fixing portion 15 when the holding body 13 is formed.
And may be integrally molded.

(5) In the above embodiment, the case of injecting a drug solution into an animal has been described as an example. However, the animal injection needle 11 can also be used, for example, for collecting blood. In this case, the same effect can be obtained.

[0029]

Although the embodiment of the present invention has been described above, the effect of the above-described veterinary injection needle 11 will be described.
Hereinafter, a specific description will be given using examples. Note that the present invention is not limited to the configuration of the embodiment described below unless the gist of the present invention is exceeded.

Embodiment 1 Here, a needle formed in the same shape as the animal injection needle 11 (FIG. 1) of the above embodiment is used, and the metal needle 12 is made of stainless steel (SUS304) having a magnetic permeability μ of 1.11. And the needle diameter is 19
The holding body 13 is made of a material obtained by adding 15% of a zinc sulfide-based luminous pigment (GSS (trade name) manufactured by Nemoto Group) to polycarbonate (Achloron (trade name) manufactured by Bayer Japan). The metal needle 12 is fixed to the fixing portion 15 of the holder 13 with an epoxy adhesive, and the fragile portion 16 is formed to have a thickness of 0.35 mm.

Then, 20 animal injection needles 11 formed as described above were prepared, and the following test was performed to examine the suitability of the animal injection needle 11. A test in which the body 13 is inserted until the body 13 touches the meat mass, and the animal injection needle 11 is bent. The fixing portion 15 and the connecting portion 14 of the holder 13 are
A test in which the metal needle 12 is intentionally cut off in step 6, the metal needle 12 is inserted into the meat chunk, and the fixing portion 15 remaining on the metal needle 12 is grasped and extracted from the meat chunk. In addition, a test in which the meat chunk in which the metal needle 12 is inserted is left in a dark place for 3 hours, and then the fixing portion 15 remaining on the metal needle 12 is grasped and extracted from the meat chunk. Permeation meter (using LP-14 manufactured by Denki Kogyo Kogyo Co., Ltd.)
Test to see if the location of the metal needle 12 can be recognized.

The results of the above test are as follows.
All of the 20 needles 1 were broken from the fragile portion 16, and only the metal needle 12 did not enter the meat chunk. Further, the fixing portion 15
Was not detached from the metal needle 12, and the fixed portion 15 and the connecting portion 14 were partially connected without being separated. Thus, it can be seen that when the animal injection needle 11 is broken, it is surely broken at the fragile portion 16, and the holding body 13, particularly the fixing portion 15, can prevent only the metal needle 12 from entering the meat mass.

The results of the above test are as follows.
All 20 pieces of 1 could be extracted. Similar results were obtained even after being left in a dark place for 3 hours. Thus, even when the animal injection needle 11 is broken, the metal needle 12 can be easily and reliably pulled out by the fixing portion 15 remaining on the metal needle 12, and the fixing portion remaining on the metal needle 12 can be removed. It can be seen that the fixed portion 15 can be recognized even in a dark place by the light of the 15 phosphorescent pigments, and that the animal needle 11 with high visibility can be obtained.

As a result of the above test, the needle of the magnetometer was swung at a distance of about 8 mm near the metal needle 12. This indicates that the location of the metal needle 12 can be reliably specified even when only the metal needle 12 has penetrated into the meat chunk.

Embodiment 2 FIG. Here, a needle formed in the same shape as the animal injection needle 11 (FIG. 1) of the above embodiment is used, and the metal needle 12 is made of stainless steel (SUS304) having a magnetic permeability μ of 1.08. And the needle diameter is 19
The retainer 13 is made of a material obtained by adding 2.5% of an organic fluorescent pigment (Nippon Shokubai Chemical Co., Ltd., Epocolor EP20 (trade name)) to polypropylene (UBE Polpro (trade name) manufactured by Ube Industries, Ltd.). It is configured. The metal needle 12 is fixed to the fixing portion 15 of the holder 13 with an epoxy adhesive, and the fragile portion 16 is formed to have a thickness of 35 mm. Then, 20 animal injection needles 11 formed in this manner were prepared, and the above-mentioned tests were carried out in the same manner as in Example 1 to examine the suitability of the animal injection needle 11.

The result of the above test is the same as the result of Example 1, and all of the 20 animal injection needles 11
, And only the metal needles 12 did not enter the meat mass. In addition, the fixing portion 15 does not separate from the metal needle 12,
Further, the fixing portion 15 and the connecting portion 14 were partially connected without being separated. Thereby, when the animal injection needle 11 is broken, it is surely broken at the fragile portion 16, and the holding member 13, especially the fixing portion 1.
5 indicates that only the metal needle 12 can be prevented from entering the meat chunk.

The results of the above test are as follows.
All 20 pieces of 1 could be extracted. However, after being left in a dark place for 3 hours, all of them could be extracted, but the visibility was lower than that of Example 1. This allows
Even if the animal injection needle 11 is broken, the metal needle 12 can be easily and reliably pulled out by the fixing portion 15 remaining on the metal needle 12, and the fluorescence of the fixing portion 15 remaining on the metal needle 12 can be obtained. It can be seen that the fixing portion 15 can be recognized by the light of the pigment within a certain period of time even in a dark place.

As a result of the above test, the needle of the magnetometer was swung at a distance of about 3 mm near the metal needle 12. This indicates that the location of the metal needle 12 can be reliably specified even when only the metal needle 12 has penetrated into the meat chunk.

Therefore, it was found that the animal injection needles of Example 1 and Example 2 were suitable for injection into an animal. In particular, the animal injection needle of Example 1 had good visibility in a dark place and good visibility. It can be seen that the metal needle is more suitable because it has high detectability.

[0040]

As described above, in the veterinary injection needle according to the present invention, the inner cavity is reduced in diameter toward the distal end and is formed in a tapered shape. A base portion of the metal needle is inserted into and fixed to a substantially central portion of the base portion, and a fixed portion having a lumen communicating with the lumen of the connection portion and the lumen of the metal needle at a substantially central portion of the base end side; , Having a lumen located between the connecting portion and the fixing portion and communicating with the lumen of the connecting portion and the fixing portion, integrally forming the weak portion having a strength lower than that of the connecting portion and the fixing portion. Since the holding body formed is provided, even if the animal injection needle is broken during the operation of injecting the animal, it is reliably broken by the weak portion 16 of the holding body 13 and the fixing portion remaining on the metal needle side The metal needle alone can be prevented from entering the animal, and the metal needle can be easily pulled out. Animal needle which does not give handicapped obtained.

In the veterinary injection needle according to the present invention,
The outer shape is smaller than the outer shape of the connection part and the fixed part,
Alternatively, since the connecting portion and the fixing portion are made of a material having lower shearing force than the material of the connecting portion and the fixing portion, it is possible to obtain an animal injection needle that can be reliably broken at the fragile portion of the holder during the operation of injection into the animal.

In the veterinary injection needle according to the present invention, the base end of the metal needle is provided so as to be located in the lumen of the fixing portion and on the distal end side of the fixing portion. When the metal needle is pulled out, the force that resists the direction in which the metal needle is pulled out is sufficiently obtained, and there is no risk that the fixed part remaining on the metal needle side will come off from the metal needle, preventing the metal needle alone from entering the animal. In addition to the fact that the whole fragile part is torn and the fixation part and the connection part are less likely to be completely separated, the metal needle can be pulled out in a partially connected state, facilitating post-processing of broken animal injection needles Can be

In the veterinary injection needle according to the present invention, at least a part of the holder is made of a synthetic resin material containing at least one of a luminous pigment, a fluorescent pigment and a fluorescent paint, or Since at least a part of the animal needle is coated with a paint containing at least one of a luminous pigment, a fluorescent pigment, and a fluorescent paint, the light of the fixed portion remaining on the broken animal injection needle, particularly on the metal needle side, causes darkness. However, the position can be easily recognized, and a highly visible animal injection needle that can be easily post-processed for a broken animal injection needle can be obtained.

The animal injection needle according to the present invention comprises a metal needle,
Since the magnetic permeability is made of stainless steel having a permeability of 1.03 or more, preferably 1.10 or more, even when the metal needle alone enters the body of the animal, the metal needle can be easily and reliably detected by the metal detector. Thus, it is possible to obtain an animal injection needle which does not have a risk of damaging a meat processing worker or a consumer who eats a processed meat product.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of an embodiment of the present invention.

FIG. 2 is a schematic diagram of a conventional syringe using an animal injection needle.

[Explanation of symbols]

 2 Syringe 11 Animal Injection Needle 12 Metal Needle 13 Holder 14 Connection 15 Fixing 16 Fragile 14b, 15a, 16a Lumen

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Akizo Mukai 5-27-7 Sendagaya, Shibuya-ku, Tokyo Japan Brunswick Building Inside Japan Sherwood Co., Ltd. (72) Inventor Masaki Ogawa Sendagaya, Shibuya-ku, Tokyo C27-7 Japan Brunswick Building Nippon Sharp Co., Ltd. F-term (reference) 4C066 AA07 BB01 CC01 DD08 EE14 FF05 GG12 KK05 KK11

Claims (9)

[Claims] 1. A connection portion in which an inner cavity is tapered to have a diameter reduced toward a distal end, and a syringe is connected to the inner cavity;
The proximal end of the metal needle is inserted and fixed to a substantially central portion on the distal end side, and has a lumen communicating with the lumen of the connection portion and the internal cavity of the metal needle at a substantially central portion on the proximal end side. And a lumen located between the connecting portion and the fixing portion and communicating with the lumen of the connecting portion and the fixing portion, and the strength is weaker than the strength of the connecting portion and the fixing portion. A veterinary injection needle comprising a holding body formed integrally with a part. 2. The fragile portion has an outer shape smaller than the outer shape of the connecting portion and the fixing portion.
The injection needle for animals according to the above. 3. The veterinary injection needle according to claim 1, wherein the fragile portion is made of a material having a lower shearing force than a material of the connecting portion and the fixing portion. 4. The metal needle according to claim 1, wherein a base end of the metal needle is provided in a lumen of the fixing portion and on a distal end side of the fixing portion. Animal injection needle. 5. A luminescent pigment comprising at least a part of the support,
The animal injection needle according to any one of claims 1 to 4, wherein the needle is formed of a synthetic resin material containing at least one of a fluorescent pigment and a fluorescent paint. 6. A phosphorescent pigment on at least a part of the support.
5. A coating material containing at least one of a fluorescent pigment and a fluorescent paint.
An animal injection needle according to any one of the above. 7. The phosphorescent pigment is a zinc sulfide phosphorescent pigment containing zinc sulfide and copper as a main component.
Or the injection needle for animals according to 6. 8. The veterinary injection needle according to claim 5, wherein the fluorescent pigment and the fluorescent dye are organic substances. 9. The animal injection needle according to claim 1, wherein the metal needle is made of stainless steel having a magnetic permeability of 1.03 or more, preferably 1.10 or more.