JP3016719U - Winged needle assembly and needle assembly - Google Patents

Abstract

(57) [Summary] (Corrected) [Purpose] Prevents the operator from accidentally puncturing the needle when removing the needle cap from the needle. [Structure] Two wings 6 are provided on the outer circumference of a needle base 5 in which a needle tube 4 is implanted.
It is composed of a winged injection needle 2 to which is attached and a needle cap 3. The needle cap 3 is formed with a cutout portion 8 extending rearward from the middle abdomen, and the cutout portion 8 has a cutout wall portion 9 formed so that the diameter gradually increases from the cutout top portion 10 toward the cutout bottom portion 11. Is formed so that the opening area increases from the notch top 10 toward the notch bottom 11, and the winged injection needle 2 has a needle base 5
Is arranged in the space of the needle cap 3 near the cutout portion 8,
The two blades 6 are folded upward, and a portion of the blade 6 near the needle base 5 is brought into contact with the notch wall portion 9 and fixed to the needle cap 3.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is intended for use by an operator by mistake when removing a needle cap from a needle or storing a needle in a needle cap when using an injection needle, a needle for a blood transfusion / infusion set, an intravenous needle, an indwelling needle, etc. The present invention relates to an improvement of a winged needle assembly and a needle assembly that are prevented from sticking to a finger.

[0002]

[Problems to be Solved by Prior Art and Invention]

 The notch groove is formed so that the needle tube is housed in the needle cap through the notch groove. The needle caps are No. 60-55448, No. 60-187735, No. 63-154038, No. 63-154038. Although the cutout portion has a small opening area as described in KAISHO 64-34041, it was not possible to fix a winged injection needle equipped with wings on the outer periphery of the needle base. Also, in Fig. 5 of Japanese Utility Model Laid-Open No. 60-187735, a needle cap in which a wall higher than the top surface of the needle cap is formed on both sides of the notch is described, but a winged injection needle is used as the needle cap. It was difficult to carry out the work because it was bulky and obstructed when fixing. Further, the needle caps described in the above four published utility model publications only fix the small diameter portion of the needle base to the needle cap, so the stability after fixing the needle base to the needle cap is poor and the needle cap is There was a risk that it could come off and expose the needle tube.

[0003]

[Means for Solving the Problems]

 [1] It is composed of a winged injection needle 2 having two wings 6 attached to the outer periphery of a needle base 5 in which a needle tube 4 is implanted, and a needle cap 3. 8 is formed, and the notch portion 8 is formed so that the notch wall portion 9 gradually expands in diameter from the notch top portion 10 toward the notch bottom portion 11. The notch portion 8 has an opening area directed from the notch top portion 10 to the notch bottom portion 11. In the winged injection needle 2, the needle base 5 is arranged in the space of the needle cap 3 in the vicinity of the notch 8 and the two wings 6 are folded upward to overlap the wings 6. Provided is a winged injection needle assembly 1 in which a portion close to the needle base 5 is brought into contact with the notched wall portion 9 and fixed to the needle cap 3. [2] The winged injection needle assembly 1 according to [1], in which the winged injection needle 2 is fixed to the needle cap 23 in which the guide wall portion 24 is formed along the notch wall portion 9 instead of the needle cap 3. provide. [3] The length of the notch width near the notch wall portion 9 is set to 15 to 30, preferably 20 to 25 with respect to the outer peripheral length 100 of the needle cap 3 (23), [1] to [2]. ] The winged injection needle assembly 1 described above is provided. [4] A needle base 35 having a needle tube 34 implanted therein and a needle cap 33. The needle cap 33 has a notch 38 extending rearward from the middle abdomen, and the notch 38 has a notch wall 39 and a notch top. 40 is formed so that the diameter gradually increases from the notch bottom portion 41 to the notch bottom portion 41. The notch portion 38 is formed so that the opening area increases from the notch top portion 40 to the notch bottom portion 41, and the large diameter portion of the needle base 35 is formed. 35 a provides an injection needle assembly 31 which is disposed in the space of the needle cap 33 near the cutout portion 38 and abuts the cutout wall portion 39 and is fixed to the needle cap 33. [5] The injection needle assembly 31 according to [4], wherein the length of the notch width in the vicinity of the notch wall portion 39 is 30 to 50, preferably 35 to 45 with respect to the outer peripheral length 100 of the needle cap 33. I will provide a.

[0004]

【Example】

 FIG. 1 is a schematic view of a winged needle assembly 1 of the present invention. The winged needle assembly 1 is a winged injection in which two wings 6 are attached to the outer circumference of a needle base 5 in which a needle tube 4 is implanted. It is composed of a needle 2 and a needle cap 3 (FIG. 2 is a plan view of the needle cap 3 of FIG. 1, and FIG. 3 is a sectional view taken along line AA of FIG. 2). The needle cap 3 is formed with a notch 8 extending from the middle abdomen to the rear, and the notch 8 is formed such that the notch wall 9 gradually expands in diameter from the notch top 10 to the notch bottom 11. ing. The opening area of the cutout portion 8 is formed such that the cutout top portion 10, the cutout wall portion 9, and the cutout bottom portion 11 are gradually increased in this order. In the winged injection needle 2, the needle base 5 is arranged in the space of the needle cap 3 near the cutout portion 8, the two wings 6 are folded upward, and the portion of the wing 6 close to the needle base 5 is formed as described above. It abuts the notch wall portion 9 and is fixed to the needle cap 3.

Further, the needle cap 23 of FIG. 4 further has a guide wall portion 24 formed along the cutout wall portion 9 of the needle cap 3 (FIG. 5 is a sectional view taken along line BB of FIG. 4). is there). In the case of the winged injection needle assembly 1, the length of the notch width near the notch wall portion 9 is set to 15 to 30, preferably 20 to 25 with respect to the outer peripheral length 100 of the needle cap 3 (23). Is good. If it is 15 or less, the notch width is too narrow to fix the blade 6, and if it is 30 or more, the notch width is too wide to fix the blade 6 too loosely, which is not preferable.

The winged injection needle assembly 1 may be assembled as shown in FIG. 1 by sliding the needle base 5 in the direction of the needle cap 3 as shown in FIG. 6, or the tip of the needle tube 4 as shown in FIG. May be put in the space of the needle cap 3 and the needle base 5 may be pushed downward to assemble as shown in FIG.

FIG. 8 is a schematic view of an injection needle assembly 31 of the present invention. The injection needle assembly 31 includes a needle base 35 having a needle tube 34 implanted therein and a needle cap 33. The needle cap 33 is formed in substantially the same manner as the needle cap 3 except that the large diameter portion 35a of the needle base 35 formed to have a diameter larger than that of the needle base 5 of the winged injection needle 2 is used as a needle. In order to facilitate fixing to the cutout wall portion 39 of the cap 33, a cutout portion 38 having a larger opening area than the cutout portion 8 of the needle cap 3 and a cutout wall portion 9 of the needle cap 3 are compared. It is characterized in that a notched wall portion 39 having a steep slope from the notched top portion 40 to the notched bottom portion 41 is formed. The injection needle assembly 31 can be assembled in the same manner as in FIGS. 6 and 7. In the case of the injection needle assembly 31, the length of the notch width in the vicinity of the notch wall portion 39 with respect to the length 100 of the outer circumference of the needle cap 33 may be set to 30 to 50, preferably 35 to 45. When it is 30 or less, the notch width is too narrow and the large diameter portion 35a of the needle base 35 is difficult to fix, and when it is 50 or more, the notch width is too wide and the large diameter portion 35a of the needle base 35 becomes too loosely fixed, which is not preferable. .

[0008]

[Function and effect of the device]

 The winged injection needle assembly of the present invention allows the needle base 5 to be easily fixed to the needle cap 3 with the wing 6 folded upward, and the wing 6 is repulsed to return to its original shape. Since the needle base 5 is crimped to the notched wall portion 9 of the cap 3, the needle base 5 can be stably fixed to the needle cap 3. Removal of the needle base 5 from the needle cap 3 can be easily performed by pinching the wing 6 with a finger and pulling it out in the direction opposite to the needle cap 3, and there is no risk of piercing a finger with the needle tube by the reaction of the pulling. Since the injection needle assembly 31 of the present invention can firmly fix the large diameter portion 35a of the needle base 35 to the needle cap 33, there is no risk that the needle cap 33 will come off and the needle tube 34 will be exposed to injure the operator. After piercing the patient with the needle tubes 4 and 34 of the winged injection needle assembly 1 and the injection needle assembly 31, hold the wings 6 and the needle base 35 when crowning the needle caps 3 (23) and 33. Apply the tip of the needle tube 4, 34 to the groove (space) in the needle cap 3 (23), 33 and slide it forward or press the needle bases 5, 35 downward to move the tip of the needle tube 4, 34 forward. The needle stick accident can be prevented by advancing to step 3 and storing it in the needle cap 3 (23), 33.

[Brief description of drawings]

FIG. 1 is a schematic view of a winged needle assembly of the present invention.

FIG. 2 is a plan view of the needle cap of FIG.

3 is a sectional view taken along line AA of FIG.

FIG. 4 is a plan view showing another embodiment of FIG.

5 is a sectional view taken along line BB of FIG.

FIG. 6 is a usage diagram of FIG.

FIG. 7 is a use state diagram of FIG.

FIG. 8 is a schematic view of an injection needle assembly of the present invention.

[Explanation of sign]

 1 Winged injection needle assembly 2 Winged injection needle 3, 23, 33 Needle cap 4, 34 Needle tube 5, 35 Needle base 6 Wing 7, 37 Tube 8, 38 Cutout portion 9, 39 Cutout wall portion 10, 40 Cutout top portion 11, 41 Notched bottom part 24 Guide wall part 31 Injection needle assembly 32 Injection needle 35a Large diameter part (needle base)

Claims (5)

[Scope of utility model registration request] 1. A winged injection needle 2 having two wings 6 attached to the outer circumference of a needle base 5 in which a needle tube 4 is implanted, and a needle cap 3. The needle cap 3 extends rearward from the mid-abdomen. A notch portion 8 is formed, and the notch portion 8 is formed so that the notch wall portion 9 gradually expands in diameter from the notch top portion 10 toward the notch bottom portion 11. The notch portion 8 has an opening area from the notch top portion 10 to the notch bottom portion 11. In the winged injection needle 2, the needle base 5 is arranged in the space of the needle cap 3 near the cutout portion 8 and the two wings 6 are folded upward, A winged injection needle assembly 1 in which a portion of the wing 6 near the needle base 5 is brought into contact with the cutout wall portion 9 and fixed to the needle cap 3. 2. The winged injection needle assembly according to claim 1, wherein instead of the needle cap 3, the winged injection needle 2 is fixed to a needle cap 23 having a guide wall portion 24 formed along the notch wall portion 9. 1. 3. The length 10 of the outer circumference of the needle cap 3 (23)
With respect to 0, the length of the notch width near the notch wall 9 is set to 15 to 3
The winged injection needle assembly 1 according to claim 1 or 2, wherein the winged needle assembly 1 is formed into 0, preferably 20 to 25. 4. A needle base 35 having a needle tube 34 implanted therein and a needle cap 33. The needle cap 33 has a cutout 38 extending rearward from the middle abdomen, and the cutout 38 has a cutout wall 39. The notch 38 is formed so that the diameter gradually increases from the notch top 40 to the notch bottom 41, and the notch 38 has an opening area from the notch top 40 to the notch bottom 41.
The large diameter portion 35a of the needle base 35 is disposed in the space of the needle cap 33 near the cutout portion 38 and abuts the cutout wall portion 39 to be fixed to the needle cap 33. The injection needle assembly 31 characterized by the above. 5. The cutout width near the cutout wall portion 39 is formed to be 30 to 50, preferably 35 to 45 with respect to the outer peripheral length 100 of the needle cap 33. The injection needle assembly 31 as described.