CN210138359U

CN210138359U - Novel syringe

Info

Publication number: CN210138359U
Application number: CN201920482653.6U
Authority: CN
Inventors: 符霞; 蔡瑞卿; 刘敏芬; 陈益平
Original assignee: Guangzhou Zhaojie Technology Co ltd
Current assignee: Guangzhou Zhaojie Technology Co ltd
Priority date: 2019-04-09
Filing date: 2019-04-09
Publication date: 2020-03-13
Anticipated expiration: 2029-04-09

Abstract

The utility model discloses a novel injector, including cylinder, piston and push-and-pull rod, the piston is located the inside of cylinder, the lower extreme of push-and-pull rod is connected the piston, the outside cover of cylinder is equipped with annular outer tube, the cylinder with form annular cavity between the outer tube, the outside cover of push-and-pull rod is equipped with annular protection tube, the protection tube sets up in the cavity, and follow the axial displacement of cavity. The annular protection tube is arranged on the outer side of the push-pull rod, so that when medical personnel sucks liquid medicine, fingers of the medical personnel can only touch the protection tube and cannot touch the push-pull rod in the needle cylinder, and liquid medicine in the needle cylinder cannot be polluted; meanwhile, as the protective tube moves in the cavity between the syringe and the outer sleeve, the protective tube can not pollute the liquid medicine in the syringe, thereby preventing cross infection and ensuring the safety of medication.

Description

Novel syringe

Technical Field

The utility model relates to the field of medical or cosmetic instruments, more specifically say, relate to a novel syringe.

Background

The injector is widely applied in the medical and beauty industry, and the injector applied at present is generally a disposable injector, thereby greatly ensuring the use safety of the injector. However, in actual use, medical staff mostly use a mode of pushing and pulling the piston rod by holding the needle with one hand to suck the liquid medicine, and because the existing piston rod has no protection structure, the situation that the piston rod is touched by fingers is inevitable in the pushing and pulling process, so that the possibility of medicine pollution exists, cross infection is possibly caused, and the medicine safety is influenced.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a novel injector which can prevent cross infection and ensure the safety of medication.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a novel injector, includes cylinder, piston and push-and-pull rod, the piston is located the inside of cylinder, the lower extreme of push-and-pull rod is connected the piston, the outside cover of cylinder is equipped with annular outer tube, the cylinder with form annular cavity between the outer tube, the outside cover of push-and-pull rod is equipped with annular protection tube, the protection tube sets up in the cavity, and follow the axial displacement of cavity.

Preferably, a baffle is arranged at the upper end of the needle cylinder, and a moving groove with the same cross section as that of the push-pull rod is formed in the baffle.

Preferably, a piston handle is arranged at the upper end of the push-pull rod, the upper end of the protection tube is fixed on the piston handle, and the upper end of the push-pull rod is detachably arranged on the piston handle.

Preferably, the push-pull rod is in threaded or snap-fit connection with the piston shank.

Preferably, the outer side of the upper end of the outer sleeve is provided with a push-pull ring.

Preferably, the cross-section of the said push-pull ring is oval.

Preferably, the push-pull rod is cross-shaped in cross section.

Preferably, the piston handle and the protection tube are in transition connection through an outwardly convex circular arc section.

Preferably, the side walls of the outer sleeve and the protection tube are both provided with vent holes.

Preferably, the lower end of the needle cylinder is fixedly connected with the lower end of the outer sleeve.

The utility model has the advantages that: by arranging the annular protection tube on the outer side of the push-pull rod, when medical personnel sucks liquid medicine, fingers of the medical personnel can only touch the protection tube and cannot touch the push-pull rod in the needle cylinder, so that the liquid medicine in the needle cylinder cannot be polluted; meanwhile, as the protective tube moves in the cavity between the syringe and the outer sleeve, the protective tube can not pollute the liquid medicine in the syringe, thereby preventing cross infection and ensuring the safety of medication. The utility model discloses simple structure, excellent in use effect easily uses widely.

Drawings

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

Fig. 2 is a schematic sectional view taken along line a-a of fig. 1.

Fig. 3 is a schematic structural view of the syringe of the novel injector of the present invention.

Fig. 4 is a schematic structural view of the push-pull rod of the novel injector of the present invention

Wherein: 1-syringe, 2-piston, 3-push-pull rod, 4-outer sleeve, 5-cavity, 6-protection tube, 7-baffle, 8-moving groove, 9-piston handle, 10-push-pull ring, 11-arc segment, 12-vent hole.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the scope of the present invention.

Referring to the attached drawings 1-4, the novel injector of the embodiment includes a needle cylinder 1, a piston 2 and a push-pull rod 3, the piston 2 is located inside the needle cylinder 1, the lower end of the push-pull rod 3 is connected to the piston 2, an annular outer sleeve 4 is sleeved outside the needle cylinder 1, an annular cavity 5 is formed between the needle cylinder 1 and the outer sleeve 4, an annular protection tube 6 is sleeved outside the push-pull rod 3, and the protection tube 6 is arranged in the cavity 5 and moves along the axial direction of the cavity 5.

According to the novel injector based on the technical characteristics, the annular protection tube 6 is arranged on the outer side of the push-pull rod 3, when medical staff sucks liquid medicine, fingers of the medical staff can only touch the protection tube 6 and cannot touch the push-pull rod 3 in the needle cylinder 1, and therefore liquid medicine in the needle cylinder 1 cannot be polluted; meanwhile, as the protection tube 6 moves in the cavity 5 between the syringe 1 and the outer sleeve 4, the protection tube can not pollute the liquid medicine in the syringe, thereby preventing cross infection and ensuring the safety of medication. The utility model discloses simple structure, excellent in use effect easily uses widely.

In this embodiment, a baffle 7 is disposed at the upper end of the needle cylinder 1, a moving groove 8 having the same cross section as that of the push-pull rod 3 is disposed on the baffle 7, and preferably, the cross section of the push-pull rod 3 and the moving groove 8 are both cross-shaped. By arranging the baffle 7, not only can the situation that bacteria pollute the liquid medicine in the needle cylinder 1 be further avoided, but also the situation that the piston 2 is pulled out and exposed in the air to be polluted when the push-pull rod 3 is pushed and pulled can be avoided. In addition, the moving groove 8 is set to be the same as the cross section of the push-pull rod 3, so that the push-pull rod 3 cannot be influenced by the baffle 7 in the moving process, the shielding area of the baffle 7 on the needle cylinder 1 is ensured to the maximum extent, and the optimal infection prevention effect is achieved.

In this embodiment, in order to facilitate the use of the injector, the upper end of the push-pull rod 3 is provided with a piston handle 9, and in addition, the outer side of the upper end of the outer sleeve 4 is provided with a push-pull ring 10, and the cross section of the push-pull ring 10 is elliptical. The upper end of the protection tube 6 is fixed on the piston handle 9, the upper end of the push-pull rod 3 is detachably arranged on the piston handle 9, and the push-pull rod 3 and the piston handle 9 can be connected in a threaded or buckled mode for facilitating the detachment between the push-pull rod 3 and the piston handle 9.

In addition, because the piston handle 9 needs to be gripped to push and pull the push-pull rod 3 in the using process of the injector, in order to increase the operation comfort, the piston handle 9 and the protection tube 6 are in transitional connection through an outward convex arc section 11, the contact area between a hand and the push-pull rod 3 is increased in the process of pushing and pulling the push-pull rod 3, and the hand comfort is ensured.

In this embodiment, the outer sleeve 4 and the protection tube 6 are both provided with vent holes 12 on the side walls. Through the arrangement of the vent hole 12, the air pressure in the cavity 5 and the space between the protection tube 2 and the needle cylinder 1 can be ensured to be consistent with the outside, the situation that the push-pull rod 3 is difficult to push and pull due to pressure difference when being pushed and pulled quickly is avoided, and the use comfort is improved.

Preferably, the vent holes 12 of the outer sleeve 4 and the protective tube 6 are disposed in two opposite positions so that gas can form better convection inside, and the vent holes 12 of the outer sleeve 4 are preferably disposed at the bottom of the outer sleeve 4, and the vent holes 12 of the protective tube 6 are preferably disposed at the upper end of the protective tube 4.

In this embodiment, in order to make the internal structure of the injector simple, beautiful and reliable, the lower end of the syringe 1 is fixedly connected with the lower end of the outer sleeve 4.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a novel injector, includes cylinder, piston and push-and-pull rod, the piston is located the inside of cylinder, the lower extreme of push-and-pull rod is connected the piston, its characterized in that: the outer side of the needle cylinder is sleeved with an annular outer sleeve, an annular cavity is formed between the needle cylinder and the outer sleeve, an annular protection tube is sleeved on the outer side of the push-pull rod, and the protection tube is arranged in the cavity and moves along the axial direction of the cavity.

2. The novel syringe of claim 1 wherein: the upper end of the needle cylinder is provided with a baffle plate, and the baffle plate is provided with a moving groove with the same cross section as the push-pull rod.

3. The novel syringe of claim 1 wherein: the upper end of the push-pull rod is provided with a piston handle, the upper end of the protection tube is fixed on the piston handle, and the upper end of the push-pull rod is detachably arranged on the piston handle.

4. The novel syringe of claim 3 wherein: the push-pull rod is in threaded connection or buckled connection with the piston handle.

5. The novel syringe of claim 1 wherein: and a push-pull ring is arranged on the outer side of the upper end of the outer sleeve.

6. The novel syringe of claim 5, wherein: the section of the push-pull ring is oval.

7. The novel syringe of claim 1 wherein: the cross section of the push-pull rod is in a cross shape.

8. The novel syringe of claim 3 wherein: the piston handle is in transition connection with the protection tube through an arc section protruding outwards.

9. The novel syringe of claim 1 wherein: the outer sleeve and the side wall of the protection tube are both provided with vent holes.

10. The novel syringe of claim 1 wherein: the lower end of the needle cylinder is fixedly connected with the lower end of the outer sleeve.