JP4145020B2 - Veterinary needle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an animal injection needle, and more particularly to an animal injection needle that is safe to use when injecting pigs and cattle and safe to use when injecting other animals.
[0002]
[Prior art]
When raising animals, it is widely practiced to prevent these animals from getting sick or to inject medicinal liquids when they get sick, especially in pig farms. We are dealing with illness with great care to provide food.
Conventionally, injection of a chemical solution has been performed using an animal syringe in which a syringe barrel is joined to the cylinder tip of the syringe, but the needle is considerably larger than that for humans. For this reason, there is an accident in which an animal that is suddenly stabbed with such a needle is violent because of its pain and often breaks the needle.
[0003]
When a breakage accident such as the above occurs, the broken needle member of the injection needle enters the body of the animal and moves through the body, so it is extremely dangerous to use it as it is for food. Yes. However, since this causes a large loss for pig farmers, an injection needle has been proposed in which an intrusion prevention member is provided at the rear of the needle member so that the broken needle member does not enter the body of the animal even if broken. For example, there is one in which an intrusion prevention member made of plastic or the like is inserted in the rear part of the needle member, and the needle member broken by the prevention member is prevented from entering the animal body.
[0004]
However, since it is not known how much the animal begins to rampage when the needle member is inserted into the animal body, the needle member does not necessarily break between the entry preventing member and the syringe barrel. Therefore, the inventor of the present invention first makes the needle member between the entry preventing member and the mounting cylinder smaller in diameter than the other part, and the animal is exposed regardless of how much the animal begins to rampage when the needle member is inserted. It proposes an invention that always breaks at the small-diameter portion when it goes wild.
[0005]
The proposed invention described above is extremely excellent structurally, but has a problem that it takes too much labor and cost for processing the rear portion of the needle member partially into a small diameter. In addition, there is a problem that the manufacturing cost becomes high because the intrusion prevention member needs to be accurately positioned and inserted in front of the easily breakable portion having a small diameter at the rear portion of the needle member.
[0006]
Therefore, as a result of research on how to make the needle member break between the ingress prevention member and the syringe needle mounting tube without reducing the diameter of the rear part of the needle member, an external force is applied to the needle member. It has been found that a larger force than the other part may be applied to the needle member between the entry preventing member and the mounting cylinder when the is applied.
[0007]
Specifically, the rear end surface of the intrusion prevention member and the front end surface of the syringe barrel are appropriately spaced, and the breakage member becomes an insulator member when broken, It has been found that a large force should be applied to the needle member in between.
[0008]
However, even if the intrusion prevention member is inserted into the needle member so that the rear end surface thereof is appropriately spaced from the front end surface of the syringe needle mounting cylinder, the needle member is not attached to the body of the animal if the injection needle is used many times. When the needle is inserted deeply into the needle, the intrusion prevention member may move backward and come into contact with the front end surface of the syringe needle mounting cylinder. There was no breakage. Therefore, a strong foot member is provided on the rear end surface of the ingress prevention member so as to maintain the above-mentioned distance. However, when the needle member is bent in the direction of the foot member, the ingress prevention member and the mounting cylinder are broken. There was a case not to.
[0009]
[Problems to be solved by the invention]
In view of the problems in the conventional injection needle for animals, the present invention has two or more foot members that can hold a space between the rear end surface of the ingress prevention member and the front end surface of the mounting tube of the injection needle at an appropriate interval. And providing a new animal injection needle in which the needle member is surely broken between the entry preventing member and the mounting tube even when the needle member is broken. It is what.
[0010]
[Means for Solving the Problems]
The configuration of the present invention made for the purpose of solving the above problems is a needle member having a mounting cylinder joined to a cylinder tip of a syringe at the rear end, and when the rear part of the needle member is broken. An entry preventing member that prevents the needle member from entering the animal body is provided, and two or more foot members protruding from the rear end surface are provided at the rear part of the entry preventing member, and the foot member is disposed behind the entry preventing member. While maintaining the space | interval of an end surface and the front-end surface of the said attachment cylinder, it has formed and provided so that the said leg member in a breaking direction may be crushed when the said needle member breaks.
[0011]
According to the present invention, in the above configuration, the intrusion prevention member inserted into the needle member has a substantially spherical shape and the rear end side is formed in an annular surface, and the insertion hole of the needle member formed in the central portion is formed on the rear end side. It can be formed to have a slightly larger diameter than the front end side, or can be formed to have an expanding taper shape toward the rear end side, and the foot member has two or six foot members entered. You may protrude from the annular rear end surface of a prevention member. The number of foot members is not limited to this, and may be seven, eight, or more.
In short, since one leg member that has been provided so as to protrude from the rear end surface of the entry preventing member in order to keep the distance between the entry preventing member and the mounting cylinder of the syringe constant is too strong, When the needle member is bent in the direction, the needle member does not break between the entry preventing member and the mounting cylinder. Therefore, instead of this one strong leg member, the contact area of the foot member in the breaking direction with the front end surface of the mounting cylinder is reduced. This is because the total is made smaller than the contact area of the one strong foot member so that the foot member is easily crushed.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention will be described with reference to the drawings. 1 is a side view showing a cross section of an entry preventing member in an example of an injection needle for animals of the present invention, FIG. 2 is a side view of the entry preventing member in FIG. 1, and FIG. 3 is a rear end side of the entry preventing member in FIG. FIG. 4 is a side view showing a state where the needle member of the animal injection needle shown in FIG. 1 is broken.
[0013]
1 to 4, reference numeral 1 denotes a needle member, and a tip end 1 a is sharply formed so as to be inserted into an injection target of an animal such as a pig or cow, and a rear end is a tip side 2 a of the mounting cylinder 2. Are integrally joined. Reference numeral 2b denotes a rear end side attached to a front end portion of a cylinder (not shown) of the syringe of the mounting cylinder 2.
[0014]
Reference numeral 3 denotes an entry preventing member that is inserted into the rear portion of the needle member 1 and is mounted on the front side of the mounting tube 2 from the front side. The entry preventing member 3 is for preventing the needle member 1 from entering the body of the animal when the needle member 1 breaks. In addition, the needle member 1 breaks at a predetermined position 1b. There is also a role to make it.
[0015]
As shown in FIG. 2, the intrusion prevention member 3 has a substantially spherical shape as a whole, and is provided with an insertion hole 3a for the needle member 1 at the center and expands in a tapered shape with the rear end side of the insertion hole 3a facing rearward. An open taper portion 3b is formed. The tapered portion 3b is provided in order to facilitate insertion when the entry preventing member 3 is inserted into the needle member 1. The tapered portion 3b may not be provided, but instead of the tapered portion 3b, a hole (not shown) having a slightly larger diameter than the insertion hole 3a may be provided on the rear side of the insertion hole 3a. The intrusion prevention member 3 may not be spherical as long as the rear part is formed on a flat surface.
[0016]
Reference numeral 3c denotes an annular surface formed on the rear end side of the entry preventing member 3, and four leg members 4a, 4b, 4c, 4d are provided on the annular surface 3c so as to protrude rearward from the annular surface 3c. ing. These foot members 4a, 4b, 4c, and 4d may be provided to rise directly from the annular surface 3c, or may be provided to rise from the inner side of the insertion hole 3a, for example, from the tapered portion 3b. These foot members 4a to 4d have the annular surface 3c on the rear end side of the entry preventing member 3 in front of the front end surface 2c on the distal end side 2a of the mounting cylinder 2 when the entry preventing member 3 is inserted into the needle member 1. In addition to positioning, the distance between the rear-end-side annular surface 3c and the front-end surface 2c of the mounting cylinder 2 is always kept constant. Although four leg members are provided here, three or five leg members may be provided, and one or seven or more leg members may be provided as long as the following conditions are satisfied. Further, the leg members 4a to 4d may be round rods or may be columnar columns having a semicircular or square cross section.
[0017]
That is, the main roles of the foot members 4a to 4d are to keep the distance between the rear end side annular surface 3c of the ingress prevention member 3 and the front end surface 2c of the mounting cylinder 2 constant as described above. In the present invention, when the needle member 1 bends due to the force acting on the needle member 1 when the animal begins to rampage, the foot member in the bending direction is, for example, one foot member 4a or two foot members 4a, 4b. The leg members 4a or the leg members 4a, 4b are crushed. Crushing here means that the foot members 4a, 4d are crushed or bent, and the tips of the foot members 4a, 4d are disengaged from the front end surface 2c of the mounting cylinder 2 to prevent entry. 3 falling off from the rear end side.
[0018]
FIG. 4 shows a state when the needle member 1 is bent in the direction of the foot member 4 a, but the foot member 4 a is crushed so that the rear end side annular surface 3 c of the intrusion prevention member 3 is attached to the mounting cylinder 2. The state is shown in which the needle member 1 is folded at the broken portion 1b in contact with the front end surface 2c, with the intrusion prevention member 3 serving as a lever member.
[0019]
In short, when inserting the intrusion prevention member 3 into the needle member 1, the four foot members 4a to 4d act equally, and the rear end side annular surface 3c of the ingress prevention member 3 and the front end surface of the mounting tube 2 Although the distance from 2c is kept constant, when the needle member 1 bends and breaks, all the force acts on the foot member in the break direction, so that it collapses. Therefore, if such a condition is satisfied, it is possible to provide one foot member. Even in the case of five or more, five or more foot members may be provided as long as all of the two to four foot members in the direction in which the needle member 1 bends are crushed. Whether or not the foot member is crushed depends on the material of the foot member, but here the foot members 4a to 4d including the intrusion prevention member 3 are made of synthetic resin. The intrusion prevention member 3 and the foot members 4a to 4d may be integrally molded integrally, or the foot members 4a to 4d may be attached later. Further, the leg members 4 a to 4 d may be made of wood, bamboo, or soft metal, and they may be attached to the intrusion prevention member 3.
[0020]
As described above, when the needle member 1 is bent, the foot members 4a to 4d in the bending direction are crushed because the foot members 4a to 4d are crushed so that the annular surface 3c in the bending direction of the entry preventing member 3 is formed. The needle member 1 is placed between the annular surface 3c of the entry preventing member 3 and the front end surface 2c of the attachment tube 2 by contacting the front end surface 2c of the attachment tube 2 and causing the entry preventing member 3 to act like a lever member. This is because a force greater than that of the other part acts so that the needle member 1 breaks at the part. The foot members 4a to 4b have a diameter of about 0.5 to 0.8 mm, preferably 0.5 to 0.6 mm, and a length of about 0.8 mm. It is appropriately changed depending on the size of the rear end face of the rear part, the material of the foot member, and the like.
[0021]
The injection needle for animals according to an example of the present invention has the above-described configuration. However, if the anti-intrusion member 3 is mixed with an antibacterial agent, is colored in an appropriate color, or has a pattern, the anti-intrusion member 3 can prevent the propagation of various germs. Moreover, since it is easy to be noticed by the operator, it is preferable in terms of hygiene, and it becomes a mark at a position where the needle member 1 is broken, which is very convenient in handling. Further, it is preferable that the needle member 1 and the intrusion prevention member 3 are heat-resistant, and the materials are not changed by boiling sterilization or the like.
[0022]
Thus, the injection needle for animals of the present invention configured as described above is attached to the distal end portion of the cylinder (not shown) of the syringe on the rear end side 2b of the mounting cylinder 2 in the same manner as the conventional injection needle. The medical solution for injection is put into the cylinder, the distal end portion 1a of the needle member 1 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 medical solution in the cylinder into the body of the animal. However, when pierced, the intrusion prevention member 3 can prevent the needle member 1 from being pierced into the body of the animal by a depth greater than that, and the animal can be violently injected during the injection of the drug solution. Since the needle member 1 breaks behind the entry preventing member 3, the needle member 1 does not enter the animal body. Further, if the entry preventing member 3 is grasped and pulled, the needle member 1 can be easily removed.
[0023]
【The invention's effect】
The present invention is as described above, and according to the animal injection needle of the present invention, the rear end surface is provided by two or more foot members provided so as to protrude from the rear end surface of the rear portion of the entry preventing member inserted into the needle member. And the front end face of the mounting cylinder can be kept constant, and the needle member is surely broken between the rear end face and the front end face of the mounting cylinder by collapsing the foot member in the breaking direction. The effect of high safety is obtained.
[0024]
Moreover, the injection needle for animals of the present invention can be easily obtained because the intrusion prevention member provided with two or more foot members on the rear portion can be directly inserted into the needle member without any special processing on the conventional needle member. Can be manufactured at a low cost.
[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 injection needle for animals of the present invention.
2 is a side view of the entry preventing member in FIG. 1. FIG.
3 is a right side view showing a rear end side of the entry preventing member of FIG. 2;
4 is a side view showing a state where the needle member of the animal injection needle shown in FIG. 1 is broken. FIG.
[Explanation of symbols]
1 Needle member
1a Tip
1b Broken part 2 Mounting cylinder
2a Tip side
2b Rear end 3 Ingress prevention member
3a Insertion hole
3b Taper
4a to 4d feet

Claims (2)

A needle member having a mounting cylinder joined to the cylinder tip of the syringe at the rear end, and an entry preventing member for preventing the needle member from entering the animal body when broken, at the rear part of the needle member. Providing two or more foot members projecting from the rear end surface at the rear part of the entry preventing member, and maintaining the distance between the rear end surface of the entry preventing member and the front end surface of the mounting cylinder by the foot member; An injection needle for animals, wherein the needle member is formed so as to be crushed when the needle member is broken.   The intrusion prevention member inserted into the needle member is substantially spherical and has a rear end side formed in an annular surface, and the needle member insertion hole formed in the central portion has a slightly larger diameter at the rear end side than the front end side. The injection needle for animals according to claim 1, wherein the injection needle is formed in such a manner as to be formed so as to be tapered toward the rear end side.

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