JP3173774B2 - Veterinary injection needle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is useful for injecting animals, especially for injecting pigs and cattle, and is highly safe for use in injecting other animals. It is about needles.

[0002]

2. Description of the Related Art When breeding animals, it is widely practiced to prevent the animals from getting sick or to inject a drug solution when sick, especially in pig farms. He pays close attention to the disease in order to make the meat available for consumption. In addition, when injecting a medicinal solution, the injecting operation of the medicinal solution is carefully performed so that the needle is not broken. An accident has occurred.

[0003] When the injection needle breaks, the injection needle enters the body of the animal and moves through the body. Therefore, if the injection needle is used as it is, it is extremely dangerous. Therefore, the injection needle is slaughtered without being used for food. is the current situation. Therefore, hog farmers are eager to take some measures, as slaughtering pigs raised without edible feeding would result in a large loss.

In view of the above circumstances, the inventor of the present invention firstly disclosed a veterinary injection needle provided with a mounting cylinder attached to the distal end of a syringe cylinder at the rear end of the needle member. Near the boundary between the needle member and the mounting tube, an intrusion prevention member for preventing a broken needle member having a spherical shape, a ring shape, a flange shape or the like having a diameter larger than the outer diameter of the needle member from entering the animal body, An animal injection needle having a configuration in which the needle is press-fitted into a needle member, and an animal injection needle having a configuration in which a fine easily breakable portion is formed behind the intrusion prevention member to be press-fitted in this injection needle, are disclosed in Japanese Patent Application No. 9-139,197. No. 213872.

[0005] Even if the injection needle breaks during injection, the tip of the broken needle can be effectively prevented from entering the animal body by the action of the above-mentioned intrusion prevention member. confirmed. However, this intrusion prevention member
Since the synthetic resin material is formed into a substantially spherical shape and then press-fitted into the needle member using a press machine, the insertion position is slightly away from the base of the needle member (near the boundary between the mounting cylinder and the needle member). Although it is necessary to position it before the broken part, since it is a press-fitting operation by a press machine, it is difficult to perform delicate positioning, and quick insertion work can not be done, or if it is inserted too much, return the position It turned out to be a hassle of having to make corrections.

Therefore, the inventor of the present invention has proposed a veterinary injection needle provided with an entry prevention member having a function of easily performing positioning when the above entry prevention member is inserted into the needle member. It was proposed as Hei 10-211747. The veterinary injection needle has an attachment cylinder connected to a cylinder end of a syringe at a rear end of the needle member. In the vicinity of a joint between the needle member and the attachment cylinder, a front end of the attachment cylinder is provided. The insertion prevention member having a positioning protrusion for preventing further insertion against the part as an insertion stopper is provided by inserting the insertion prevention member, and the rear of the entry prevention member is an easily breakable portion, and the structure is such that Even if it is broken like the proposed one, there is an effect that the broken needle tip side does not enter the body of the animal, but the insertion of the penetration prevention member into the needle member is still press-fit, It was found that the work efficiency was still difficult to increase. In addition, if the insertion stopper is integrally formed with the penetration preventing member, the mold of the penetration preventing member becomes complicated, and this is disadvantageous in terms of cost.

[0007]

SUMMARY OF THE INVENTION In view of the above circumstances, the present invention has been made in view of the above circumstances, and is capable of preventing the needle member from entering the body of the animal even if the animal violates during injection and the needle member is broken. It is an object of the present invention to provide a veterinary injection needle that can easily be fitted with an intrusion prevention member or manufactured.

[0008]

SUMMARY OF THE INVENTION The object of the present invention, which has been made to solve the above-mentioned problem, is to provide a veterinary injection needle comprising a needle member having a mounting cylinder which is joined to a cylinder tip of a syringe at a rear end. In addition, at the rear of the needle member, an entry preventing member for preventing the needle member from entering the animal body when the needle member is broken is provided, and an easily breakable portion is formed behind the member so as to easily break the needle member. In the veterinary injection needle, a convex portion is provided on the outer periphery of the needle member as an insertion stopper in front of the easily breakable portion of the needle member so as to prevent the intrusion prevention member inserted into the needle member from being further inserted. It is a feature. Here, the entry preventing member can be formed using a synthetic resin such as an elastomer resin or an engineering plastic resin, rubber, or other appropriate metal material.

In the animal injection needle of the present invention, an insertion stopper into which the above-mentioned intrusion preventing member is not inserted any more is provided by making the diameter of the rear part of the needle member larger than that of the front part, and providing the boundary part thereof at the step part. In some cases, the step portion is formed so as to act as an insertion stopper, or a groove is provided at an appropriate position in the middle of the needle member, and a ring-shaped member or the like is attached to the groove as an insertion stopper. Further, in the present invention, a flange may be provided slightly before the rear end of the needle member so as to function as an insertion stopper for an entry prevention member into which the flange is inserted. Further, when the entry prevention member in the present invention is formed of a member such as a substantially spherical body, the insertion hole for the needle member provided at the center thereof is formed in a size that can be loosely inserted into the needle member, and the press is formed. You may make it easy to insert in a needle member, without depending on press-fitting of a machine. In this case, the inserted prevention member is fixed to the needle member with an adhesive. In the present invention, a member having a positioning protruding portion provided at the rear end portion thereof for preventing further insertion by contacting the front end portion of the mounting cylinder may be used as the entry preventing member.

Further, in the present invention, an animal injection needle which can easily mount an entry preventing member or manufacture an entry preventing member is joined to a cylinder tip of a syringe at a rear end. A needle member provided with a mounting cylinder, provided at the rear of the needle member with an intrusion prevention member for preventing the needle member from entering the animal body when broken, and a needle member behind the member. In a veterinary injection needle having an easily broken part which is easily broken, the penetration preventing member is formed in a substantially spherical shape, and the insertion front end side of the hole is formed at a central portion thereof to have a slightly larger diameter than the rear end side of the insertion hole. Alternatively, an insertion hole of the needle member into which the needle member can be loosely inserted is formed by forming the needle member into an expanded tapered shape, and when the needle member is inserted into the needle member, it is fixed to the needle member by an adhesive.

[0011] The above-mentioned needle for an animal of the present invention can prevent the needle member from entering when the animal is violated and the needle member breaks during injection while piercing the required portion of the animal with the needle member. The needle member is broken from the easily breakable portion set at the rear of the member, and further prevents the needle member from entering while the entry prevention member is in contact with the skin of the animal. Therefore, in the injection needle of the present invention, even if the needle member breaks during the injection, the entry prevention member can be picked up and the needle member can be pulled out from the animal, so that there is a possibility that the needle member may enter the animal body and move in the body. There is nothing.

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view of an example of the animal injection needle of the present invention in a cross-sectional view showing an entry prevention member, FIG. 2 is a side view of the entry prevention member in FIG. 1, FIG. 3 is a side view of a second example of the entry prevention member, FIG. 4 is a side view of a third example of the penetration preventing member, FIG. 5 is a side view of another example of the animal injection needle of the present invention, FIG. 6 is a side view of a fourth example of the penetration preventing member, and FIG. It is an expanded sectional view of an insertion stopper.

In FIG. 1, reference numeral 1 denotes a needle member, the tip 1a of which is sharply formed so as to pierce an injection body,
The rear end 1b is integrally joined to the distal end 2a of the mounting cylinder 2 mounted on the distal end of the cylinder (not shown) of the syringe. The needle member 1 is joined to the mounting cylinder 2. Retreat
A groove 1c for making the front side of 1b (the left side in FIG. 1) thinner than the main body of the needle member 1 is formed, or a groove 1d described later.
Is formed, and this is made an easily breakable portion.

3 is a broken portion of the needle member 1 when an animal is injected.
2 is an entry preventing member for preventing the needle member 1 from entering the body of the animal even if the needle member 1 is cut off. As shown in FIG. In addition, the rear end side of the insertion hole 3a is expanded in a tapered shape to facilitate insertion into the needle member 1, and is formed in a tapered portion 3c into which an insertion stopper 4 described later is inserted. The inner diameter of the insertion hole 3a is
The penetration preventing member 3 is formed on either the inner diameter that can be loosely inserted into the needle member 1 or the inner diameter for press-fitting. The inner diameter that can be loosely inserted is easier to insert, and the positioning workability. Preferred from above. Reference numeral 4 denotes a ring which is attached to the needle member 1 slightly short of the easily breakable portion 1c and acts as an insertion stopper for the penetration preventing member 3. Here, a shallow groove 1d is formed in the needle member 1 as illustrated in FIG. A ring such as an E-ring is mounted in the groove 1d.

In the entry preventing member 3 of FIG. 2, the needle member 1 is inserted from the side of the tip 1a of the needle member insertion hole from the side of the tapered portion 3c of the needle member insertion hole, and the insertion stopper 4 is moved to the end of the tapered portion 3c of the hole 3a. After that, an adhesive is inserted into the tapered portion 3c and fixedly attached to the needle member. The tapered portion 3c functions to store an adhesive (not shown). As shown in FIG. 3, the entry preventing member 3 may have a large-diameter portion 3b instead of the expanding tapered portion 3c as illustrated in FIG. Further, a positioning protrusion 3d is provided on the rear surface of the entry preventing member 3 in FIG.

In the above example, the easily breakable portion is formed in the groove 1c or 1d.
However, in the present invention, the easily breakable portion may be formed to be narrower by a groove or the like, or may be formed as a breakable portion by adding a bump-shaped step portion having a diameter larger than that of the needle member main body.
Further, even if the thickness of the needle member main body remains the same, the easily breakable portion is formed between the rear surface of the above-described entry prevention member 3 and the front end 2a
Of the needle member 1 attached to the rear end portion 1b.

In the above example, the entry preventing member 3 has a substantially spherical shape. However, the present invention is not limited to the spherical shape, and as shown in FIG. At the distal end of the member 1), the needle member 1 may be provided so as to be fitted outside. FIG. 5 shows that the insertion stopper 4 of the entry preventing member 3 is formed by the flange member 41.
Although not shown as a modification of the flange member 41,
If the claw pieces are formed at three to four places on the outer periphery of the needle member 1 and the formed claw pieces are folded back to the tip end side of the needle member 1, they function like a hook, so that the hook member 1 It is effective in preventing entry into the body of animals.

In the present invention, if the anti-invasion member 3 is mixed with an antibacterial agent, or is colored or provided with an appropriate pattern, the propagation of bacteria and the like by the intrusion prevention member 3 can be prevented. In addition, since it is easy to be noticed by the operator, it is preferable from the viewpoint of hygiene.
It becomes extremely convenient in handling. Further, it is preferable that the needle member 1 and the intrusion prevention member 3 are made of a material having heat resistance, and the material does not change due to boiling disinfection or the like.

The animal injection needle of the present invention configured as described above is attached to the distal end of a cylinder (not shown) of the syringe at the rear end side 2b of the mounting cylinder 2 similarly to the conventional injection needle. Then, a drug solution for injection is put in the cylinder, the tip 1a of the needle member is pierced into a required portion of the animal to be injected, and the piston rod or plunger of the cylinder is pushed to inject the drug solution in the cylinder into the body of the animal. This is used to prevent the needle member 1 from piercing the body of the animal at a greater depth by the action of the penetration preventing member 3 at the time of piercing. Even if it breaks from the easily breakable portion 1c or 1d set behind the penetration preventing member 3, the penetration preventing member 3 prevents further penetration when it comes into contact with the skin of the animal, so that the needle member 1 Get into the animal It is not, also, if pulled by pulling the intrusion preventing member 3 can be withdrawn needle member 1 easily.

[0020]

As described above, the present invention is directed to a needle member having a mounting cylinder joined to the tip of a cylinder of a syringe at a rear end thereof. An animal injection needle having an entry preventing member for preventing the needle member from entering, and an easily breakable portion formed so that the needle member is easily broken behind the member, in front of the easily breakable portion of the needle member. In addition, since a projection is provided on the outer periphery of the needle member as an insertion stopper for preventing the entry prevention member inserted into the needle member from being further inserted, the needle member pierces the animal body deeper than the position of the entry prevention member. Therefore, the safety is high, and even if the animal becomes violent at the time of injection and the needle member breaks, the needle member breaks at the easily breakable portion and the needle member remaining on the animal side is broken. Intrusion prevention member at the rear end Therefore, the needle member can be prevented from further entering the body of the animal, and after breakage, the needle member can be easily removed from the animal by pinching and pulling the entry prevention member. it can.

[Brief description of the drawings]

FIG. 1 is a side view showing a cross section of an entry preventing member in an example of an animal injection needle of the present invention.

FIG. 2 is a side view of the entry preventing member in FIG.

FIG. 3 is a side view of a second example of the entry preventing member.

FIG. 4 is a side view of a third example of the entry preventing member.

FIG. 5 is a side view of another example of the animal injection needle of the present invention.

FIG. 6 is a side view of a fourth example of the entry preventing member.

FIG. 7 is an enlarged sectional view of the insertion stopper of FIG. 1;

[Explanation of symbols]

 Reference Signs List 1 needle member 1a needle member tip 1b needle member rear end 1c, 1d groove 2 mounting tube 2a mounting tube 2b mounting tube rear end 3,31 entry prevention member 3a needle member insertion hole 3b needle member Large diameter part of insertion hole 3c Taper part

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2000-51247 (JP, A) JP-A-11-42243 (JP, A) JP-A-2000-24014 (JP, A) JP-A-4-90315 (JP) JP, U) Japanese Utility Model 73653 (JP, U) Utility Model Registration 2587331 (JP, Y2) Japanese Utility Model Publication No. 29-972 (JP, Y1) US Patent 1272104 (US, A) US Patent 14655851 (US, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) A61D 7/00 A61M 5/32

Claims (4)

(57) [Claims] 1. A needle member having a mounting cylinder joined to a cylinder tip of a syringe at a rear end thereof, wherein the needle member is prevented from entering the animal body when broken at a rear portion of the needle member. In the animal injection needle provided with an easily-breakable portion that facilitates breaking of the needle member at the rear of the member, an intrusion prevention member is provided which is inserted into the needle member before the easily breakable portion of the needle member. An injection needle for animals, wherein a projection is provided on the outer periphery of the needle member as an insertion stopper for preventing the prevention member from being further inserted. 2. The insertion stopper is formed of one of a ring-shaped member attached to the needle member, a flange-shaped member formed on the needle member, and a short cylindrical member attached to the needle member.
Animal injection needle. 3. The veterinary injection needle according to claim 1, wherein the insertion hole is formed to have a size that can be inserted into the needle member, and is fixed to the needle member by an adhesive when inserted into the needle member. 4. A needle member having a mounting cylinder joined to a cylinder tip of a syringe at a rear end thereof, wherein the needle member is prevented from entering the animal body when broken at the rear portion of the needle member. An animal injection needle provided with an easy-to-break portion that facilitates breaking of the needle member at the rear of the member while providing an entry-preventing member to be inserted, the entry-prevention member is formed in a substantially spherical shape, and the insertion tip of the hole is provided at the center thereof. The side is formed to have a slightly larger diameter than the rear end side of the insertion hole, or is formed in an expanded tapered shape to form an insertion hole of the needle member into which the needle member can be loosely inserted. An animal injection needle characterized by being fixed to a needle member.