CN211535658U

CN211535658U - Damage-proof needle

Info

Publication number: CN211535658U
Application number: CN201920639791.0U
Authority: CN
Inventors: 龙勇; 熊燕
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-07
Filing date: 2019-05-07
Publication date: 2020-09-22
Anticipated expiration: 2029-05-07

Abstract

The utility model discloses an anti-injury syringe needle relates to the medical instrument field, has solved the fragile problem of current disposable medical syringe needle. This syringe needle includes inlayer syringe needle and cup joints the outer syringe needle of dispensing on inlayer syringe needle, inlayer syringe needle connects including being used for the plug-in endotheca that cup joints on the nipple portion of the blind end of syringe cylinder to and the interior syringe needle body of being connected with endotheca, the outer syringe needle of dispensing includes that the plug-in overcoat that cup joints on the endotheca connects and with the outer syringe needle body of overcoat articulate, the length of outer syringe needle body is slightly longer than the length of inner syringe needle body, the inner syringe needle body is arranged in outer syringe needle body, the overhead needle cap that has still cup jointed of outer dispensing syringe needle. Adopt the utility model discloses an injury prevention syringe needle when puncturing for the patient, needn't change the syringe needle repeatedly during dispensing, and the probability of pollution can be reduced takes off the outer syringe needle of dispensing during the puncture and is feasible puncture operation promptly, and convenient and fast has reduced operating cost, and the outer syringe needle of dispensing is for the straight-face needle point, should not block up.

Description

Damage-proof needle

Technical Field

The utility model relates to the field of medical equipment, concretely relates to needn't change the syringe needle repeatedly during dispensing, the damage prevention syringe needle that can reduce the pollution probability.

Background

The disposable medical syringe used in clinic is composed of a syringe and a needle which are connected through the nipple part of the syringe. Taking intramuscular injection as an example: our sequence of operations is: opening the package → dissolving/drawing medicine → injecting, during the process of dissolving medicine and drawing medicine, the needle can pierce the rubber bottle stopper repeatedly to make the needle point dull and even become a barb. Painless techniques are advocated for the care and treatment operations, which can even cause further injury if the needle becomes dull or barbed which can increase the pain experienced by the patient. In order to solve the problem, an operation mode is to replace a needle head for injection after dispensing, most hospitals newly open and seal an injector to take out the needle head inside for replacing the used needle head, the injector is wasted, the cost is increased, and if the same needle head is used for dispensing for multiple people, the principle that one needle is used by one person is not met. The needle head which is packaged once and independently is used, but the pollution probability of the nipple part of the syringe is increased due to repeated replacement, the aseptic operation principle is not met, the needle head of the syringe for puncture is an inclined needle point, and the needle head is easily blocked by a puncture rubber plug.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects existing in the technology, the utility model provides an anti-damage needle which can reduce the pollution probability without repeatedly replacing the needle head during the dispensing.

The utility model discloses realize that the technical scheme that above-mentioned technological effect adopted is:

an anti-injury needle head comprises an inner layer injection needle head and an outer layer dispensing needle head sleeved on the inner layer injection needle head, wherein the inner layer injection needle head comprises an inner sleeve joint sleeved on the nipple part of the closed end of a syringe needle cylinder in a plugging mode and an inner needle body connected with the inner sleeve joint, the outer layer dispensing needle head comprises an outer sleeve joint sleeved on the inner sleeve joint in a plugging mode and an outer needle body connected with the outer sleeve joint in a plugging mode, the length of the outer needle body is slightly longer than that of the inner needle body, and the inner needle body is located in the outer needle body.

Preferably, in the above-mentioned injury-preventing needle head, the length of the outer needle body is 1 to 3mm longer than the length of the inner needle body.

Preferably, in the above-mentioned atraumatic needle, the length of the outer needle body is 2mm longer than the length of the inner needle body.

Preferably, in the above-mentioned injury-preventing needle head, the needle point of the outer needle body is a straight needle point, and the circumferential wall surface of the outer needle body is provided with an opening at a position close to the straight needle point.

Preferably, in the above-mentioned atraumatic needle, the opening of the straight-faced needle tip is a flat surface along the end face.

Preferably, in the above-mentioned damage-preventing needle head, a sealing ring is disposed at one end of the outer circumferential surface of the inner sleeve joint, which is close to the inner needle body, and when the outer sleeve joint is fixed to the inner sleeve joint in a sleeved manner, the sealing ring is in interference fit with the inner sleeve cavity wall of the outer sleeve joint.

Preferably, in the above-mentioned injury-preventing needle, a needle cap is further sleeved on the outer-layer dispensing needle.

The utility model has the advantages that: adopt the utility model discloses an injury prevention syringe needle when puncturing for the patient, needn't change the syringe needle repeatedly during dispensing, but the pollution probability can be reduced, takes off the outer syringe needle of dispensing during the puncture and be feasible puncture operation, and convenient and fast has reduced operating cost, also accords with the one-man one needle one-purpose principle that need follow when dispensing simultaneously. In addition, the needle point of the outer layer dispensing needle is a straight needle point, so that the straight needle point of the outer layer dispensing needle is not easy to block when the needle point penetrates a rubber stopper of a medicament bottle during medicament dissolving and drawing operation, and the operation cost is reduced.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the outer dispensing needle and the inner injection needle of the present invention after being separated;

FIG. 3 is a schematic view of the anti-injury needle of the present invention applied to an injector;

FIG. 4 is a schematic view of the syringe with the inner needle removed;

fig. 5 is a schematic structural view of the straight needle point of the outer dispensing needle of the present invention at two different viewing angles.

Detailed Description

For a further understanding of the invention, reference is made to the following description taken in conjunction with the accompanying drawings and specific examples, in which:

in the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

As shown in fig. 1 and 2, the embodiment of the present invention provides an anti-injury needle, which includes an inner layer injection needle 1 and an outer layer dispensing needle 2 sleeved on the inner layer injection needle 1. The inner layer injection needle 1 comprises an inner sleeve joint 12 and an inner needle body 11 connected with the inner sleeve joint 12, wherein the inner sleeve joint 12 is used for being sleeved on a nipple part 41 at the closed end of the syringe needle cylinder 4 in an inserting and pulling mode. The outer layer dosage needle head 2 comprises an outer sleeve joint 22 and an outer needle body 21 connected with the outer sleeve joint 22, the outer sleeve joint 22 is used for being sleeved on the inner sleeve joint 12 in a plugging and pulling mode, the length of the outer needle body 21 is slightly longer than that of the inner needle body 11, and the inner needle body 11 is located in the outer needle body 21.

As an optimization of the utility model, the length of the outer needle body 21 is 1-3 mm longer than that of the inner needle body 11.

In some other embodiments, the length of the outer needle body 21 is 2mm longer than the length of the inner needle body 11.

Further, in the preferred embodiment of the present invention, as shown in fig. 5, the needle point of the outer needle body 21 of the present invention is a straight needle point 24, unlike the bevel needle point of the conventional syringe needle. The circumferential wall surface of the outer needle body 21 is provided with an opening 23 at a position close to the straight needlepoint 24, and the opening of the straight needlepoint 24 is a straight surface along the end surface 241. The needle point of the inner layer injection needle 1 adopts the inclined needle point of the prior common injection needle.

Further, as shown in fig. 1 and 2, in order to prevent the disposed medical fluid from leaking out from the gap between the inner hub 12 and the outer hub 22 during the drug dissolving and drawing operation, a seal ring 13 is provided on the outer circumferential surface of the inner hub 12 at one end near the inner needle body 11. When the outer sleeve 22 is fixed to the inner sleeve 12, the seal ring 13 is in interference fit with the inner sleeve wall of the outer sleeve 22. Preferably, the seal ring 13 is made of nitrile rubber. As a further protection, the outer layer dosage needle 2 is also sleeved with a needle cap 3.

As shown in fig. 3 and 4, fig. 3 is a schematic structural view of the anti-injury needle of the present invention applied to an injector, and fig. 4 is a schematic structural view of the injector with the inner injection needle removed. Applied the utility model discloses a syringe of damage-proof syringe needle is when using, the outer syringe needle 2 that dispenses of a utensil syringe that keeps newly unsealing earlier cup joints and fixes on inlayer syringe needle 1, take off needle cap 3, carry out aseptic technique, then directly pierce the medicament bottle with the damage-proof syringe needle that cup joints and dissolve medicine and take out the medicine operation, extract to syringe cylinder 4 back at the liquid medicine that will dispose, then take off the outer syringe needle 2 that dispenses of damage-proof syringe needle, puncture the patient with inlayer syringe needle 1, puncture successfully the back, then promote push rod 5, piston 6 through the 5 tip of push rod, inject the liquid medicine in the syringe cylinder 4. After the injection is completed, the syringe is scrapped.

To sum up, adopt the utility model discloses an injury prevention syringe needle when puncturing for the patient, needn't change the syringe needle repeatedly during dispensing, can reduce the pollution probability, takes off the outer syringe needle of dispensing during the puncture and be feasible puncture operation, convenient and fast has reduced operating cost, also accords with the one-man one-needle one-purpose principle that need follow when dispensing simultaneously. In addition, the needle point of the outer layer dispensing needle is a straight needle point, so that the straight needle point of the outer layer dispensing needle is not easy to block when the needle point penetrates a rubber stopper of a medicament bottle during medicament dissolving and drawing operation, and the operation cost is reduced.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, but rather is described in the foregoing embodiments and the description with reference to the principles of the invention and that various changes and modifications may be made without departing from the spirit and scope of the invention, and it is intended that all such changes and modifications fall within the scope of the invention as claimed, which is defined by the claims appended hereto and their equivalents.

Claims

1. An anti-injury needle head is characterized by comprising an inner layer injection needle head and an outer layer dispensing needle head sleeved on the inner layer injection needle head, wherein the inner layer injection needle head comprises an inner sleeve joint sleeved on the nipple part of the closed end of a syringe needle cylinder in a plugging mode and an inner needle body connected with the inner sleeve joint, the outer layer dispensing needle head comprises an outer sleeve joint sleeved on the inner sleeve joint in a plugging mode and an outer needle body connected with the outer sleeve joint in a plugging mode, the length of the outer needle body is slightly longer than that of the inner needle body, and the inner needle body is located in the outer needle body.

2. The atraumatic needle of claim 1, wherein the length of the outer needle body is 1-3 mm longer than the length of the inner needle body.

3. The atraumatic needle of claim 1, wherein the length of the outer needle is 2mm longer than the length of the inner needle.

4. The atraumatic needle of claim 1, wherein the needle tip of the outer needle body is a straight needle tip, the circumferential wall of the outer needle body having an opening at a location adjacent to the straight needle tip.

5. The atraumatic needle of claim 4, wherein the opening of the straight needle tip is a flat surface along the end face.

6. The atraumatic needle of claim 1, wherein the outer circumferential surface of the inner hub has a sealing ring at an end near the inner needle body, the sealing ring being in interference fit with the inner hub wall of the outer hub when the outer hub is mounted on the inner hub.

7. The atraumatic needle of claim 1, wherein a needle cap is further sleeved onto the outer dispensing needle.