CN211611116U

CN211611116U - Medical safety syringe

Info

Publication number: CN211611116U
Application number: CN202020194822.9U
Authority: CN
Inventors: 周晴燕
Original assignee: Nantong First Peoples Hospital
Current assignee: Nantong First Peoples Hospital
Priority date: 2020-02-22
Filing date: 2020-02-22
Publication date: 2020-10-02
Anticipated expiration: 2030-02-22

Abstract

The utility model provides a medical safety injector, which comprises an injection tube, a core bar, an elastic sealing head and a needle head, wherein the core bar is arranged deep into the injection tube; the front end of the injection tube is provided with an injection nozzle, and the needle is sleeved on the injection nozzle; a filter cylinder net is plugged in the injection nozzle; the outer side of the needle head is provided with a protective sleeve, and the inside of the needle head is filled with a disinfection material. The utility model discloses a medical safety syringe, the outer wall that the injection was chewed has the toper boss, and both extrude each other with the inner wall toper boss of syringe needle afterbody and constitute and agree with for the very joint of syringe needle base is chewed to the injection of syringe, and screens connecting portion are difficult to break away from, have ensured the fastness that the syringe needle is connected, have improved sealed effect moreover, have avoided the air admission, have improved the safety in utilization of syringe.

Description

Medical safety syringe

Technical Field

The utility model relates to the field of medical equipment, particularly, relate to a medical safety syringe.

Background

The injector is a common appliance in medical instruments, and the injector in common use at present comprises a needle head, a needle tube and a core rod. The injector consists of a syringe with a small hole at the front end and a piston core rod matched with the syringe. Syringes are used to inject small amounts of liquid or other substances into or out of areas that are otherwise inaccessible. When the core rod is pulled out, liquid or gas is sucked from the small hole at the front end of the needle cylinder, and when the core rod is pushed in, the liquid or gas is extruded. This process of drawing or injecting gas or liquid with a syringe and needle is called injection.

It has the advantages of simple structure and convenient use. However, there are many problems, for example, the existing injector is generally composed of an injector body and a needle in a split type, a liquid outlet pipe is arranged on the front end face of the injector body, and the needle is sleeved on the liquid outlet pipe through a needle seat. However, the connection between the syringe needle and the syringe body is not firm enough, and in the process of medicine suction or injection, the phenomenon that the needle falls off sometimes occurs due to reasons such as overlarge internal pressure, so that the medicine liquid is wasted, and the working difficulty is increased. Moreover, the injection contains insoluble microparticle impurities, and after the insoluble microparticles enter the body of a patient, the insoluble microparticles cause discomfort to the patient on a light basis and cause serious harm to the life safety of the patient on a heavy basis. Based on the above situation, it is necessary to provide a syringe in which a needle is firmly connected to the syringe and impurities in a medical solution can be filtered.

Disclosure of Invention

In order to solve the technical problems that the connection between the needle head and the injector body in the prior art is not firm enough, and the insoluble particle impurities exist in the medicament to cause discomfort of patients, the utility model provides a medical safety injector.

The technical scheme of the utility model is that: a medical safety syringe characterized by: the injection device comprises an injection tube, a core rod, an elastic sealing head and a needle head, wherein the core rod is extended into the injection tube, the outer end of the core rod is provided with a gland, one end of the core rod, which is extended into the injection tube, is provided with a piston pushing head, the piston pushing head is provided with a conical head, and the conical head is extended into the elastic sealing head and is elastically connected with the elastic sealing head; the front end of the injection tube is provided with an injection nozzle, and the needle is sleeved on the injection nozzle; a filter cylinder net is plugged in the injection nozzle; the syringe needle outside has the protective sheath, the protective sheath suit is on the syringe, have the annular groove on the front end outer wall of syringe, syringe and protective sheath constitute sealing connection through the anticreep ring in the annular groove, the protective sheath is filled there is the disinfection material.

According to the technical scheme, the outer side wall of the elastic sealing head is provided with a plurality of raised sealing rings, and the sealing rings and the inner wall of the injection tube form multiple sealing.

According to the technical scheme, the outer wall of the injection nozzle at the front end of the injection tube 1 is provided with a conical boss, the conical surface of the conical boss faces outwards, the inner wall of the tail part of the needle head is provided with an inverted conical boss opposite to the conical boss on the outer wall of the injection nozzle, and the two bosses are mutually extruded to form a fit.

According to the technical scheme, the conical taper of the conical boss on the outer wall of the injection nozzle is 15-30 degrees.

According to the technical scheme, the filter cylinder net comprises an open cylinder opening, a net cylinder wall and a net cylinder bottom, the diameter of the filter cylinder net is slightly smaller than the inner diameter of an injection nozzle at the front end of the injection pipe, and the cylinder bottom of the filter cylinder net 7 is installed in the injection nozzle in an outward mode.

According to the technical scheme, the disinfection material is disinfection cotton or disinfection sponge.

According to the technical scheme, the elastic sealing head is made of elastic rubber materials.

According to the technical scheme, the elastic sealing head is hemispherical.

According to the technical scheme, the outer wall of the injection tube is provided with the scale marks, so that medical personnel can observe the amount of the sucked liquid medicine conveniently, the output quantity of the liquid medicine can be controlled conveniently, and the precision of the push needle is improved.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a medical safety syringe, the outer wall that the injection was chewed has the toper boss, and both extrude each other with the inner wall toper boss of syringe needle afterbody and constitute and agree with for the very joint of syringe needle base is chewed to the injection of syringe, and screens connecting portion are difficult to break away from, have ensured the fastness that the syringe needle is connected, have improved sealed effect moreover, have avoided the air admission, have improved the safety in utilization of syringe.

The utility model discloses a medical safety syringe, the syringe needle outside has the protective sheath, and inside packing has disinfection cotton or disinfection sponge for the syringe needle can not receive the pollution in being in the disinfection protection all the time before the injection when reserve, has guaranteed the purity of syringe needle, has promoted the safety in utilization.

The utility model discloses a medical safety syringe is provided with the filter cylinder net, and insoluble particle in can effectual filtering liquid medicine prevents that insoluble particle from entering into the patient along with the liquid medicine internal, causes harm to patient's healthy.

Drawings

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

FIG. 2 is a schematic structural view of the filter cartridge net of the present invention;

FIG. 3 is a schematic view of the connection structure of the injection nozzle and the needle base of the medical safety syringe;

the reference numbers are as follows: 1. an injection tube; 2. a core bar; 3. a piston pusher; 4. an elastic sealing head; 41. a seal ring; 5. a needle head; 6. a protective sleeve; 7. a filter cartridge web; 9. the anti-drop ring; 11. and a conical boss.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Example 1

As shown in fig. 1, a medical safety syringe comprises a syringe 1, a core rod 2 extending into the syringe 1, an elastic sealing head 4 and a needle 5, wherein the outer end of the core rod 2 is provided with a gland, one end extending into the syringe 1 is provided with a piston pushing head 3, the piston pushing head 3 is provided with a conical head, and the conical head extends into the elastic sealing head 4 and is elastically connected with the elastic sealing head 4; the front end of the injection tube 1 is provided with an injection nozzle, and a needle head 5 is sleeved on the injection nozzle; a filter cylinder net 7 is plugged in the injection nozzle; the syringe needle 5 outside has protective sheath 6, and protective sheath 6 suit has annular groove on syringe 1 on the front end outer wall of syringe 1, and syringe 1 constitutes sealing connection with protective sheath 6 through the anticreep ring 8 of annular inslot, and protective sheath 6 is filled there is the disinfection material.

Furthermore, the outer side wall of the elastic sealing head 4 has a plurality of raised sealing rings 41, the sealing rings 41 forming multiple seals with the inner wall of the syringe 1.

As shown in figure 3, the outer wall of the injection nozzle at the front end of the injection tube 1 is provided with a conical boss 11, the conical surface of the conical boss 11 faces outwards, the inner wall of the tail part of the needle head 5 is provided with an inverted conical boss opposite to the conical boss 11 on the outer wall of the injection nozzle, and the two bosses are mutually extruded to form a fit. The conical taper of the conical boss 11 on the outer wall of the injection nozzle is 15-30 degrees.

As shown in figure 2, the filter cylinder net 7 comprises an open cylinder mouth, a net cylinder wall and a net cylinder bottom, the diameter of the filter cylinder net 7 is slightly smaller than the inner diameter of the injection nozzle at the front end of the injection pipe 1, and the cylinder bottom of the filter cylinder net 7 is installed in the injection nozzle in an outward mode.

In this embodiment, the sterilizing material is sterilized cotton or sterilized sponge; the elastic sealing head 4 is made of elastic rubber material; the shape of the elastic sealing head 4 is hemispherical; the outer wall of the injection tube 1 is provided with scale marks, so that medical staff can observe the amount of the absorbed liquid medicine conveniently, the output quantity of the liquid medicine can be controlled conveniently, and the precision of the push needle is improved.

The utility model discloses a medical safety syringe, the outer wall that the injection was chewed has the toper boss, and both extrude each other with the inner wall toper boss of syringe needle afterbody and constitute and agree with for the very joint of syringe needle base is chewed to the injection of syringe, and screens connecting portion are difficult to break away from, have ensured the fastness that the syringe needle is connected, have improved sealed effect moreover, have avoided the air admission, have improved the safety in utilization of syringe. The syringe needle outside of syringe has the protective sheath, and inside packing has disinfection cotton or disinfection sponge for the syringe needle is in the disinfection protection all the time before the injection when reserve, can not receive the pollution, has guaranteed the purity of syringe needle, has promoted the safety in utilization. And be provided with the filter cylinder net, insoluble particle in can effectual filtering liquid medicine prevents that insoluble particle from entering into the patient along with the liquid medicine in vivo, causes the harm to patient's health.

While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. A medical safety syringe characterized by: the injection device comprises an injection tube (1), a core rod (2) extending into the injection tube (1), an elastic sealing head (4) and a needle head (5), wherein the outer end of the core rod (2) is provided with a gland, one end extending into the injection tube (1) is provided with a piston push head (3), the piston push head (3) is provided with a conical head, and the conical head extends into the elastic sealing head (4) and is elastically connected with the elastic sealing head (4); the front end of the injection tube (1) is provided with an injection nozzle, and the needle head (5) is sleeved on the injection nozzle; a filter cylinder net (7) is plugged in the injection nozzle; syringe needle (5) outside has protective sheath (6), protective sheath (6) suit is on injection syringe (1), have the annular groove on the front end outer wall of injection syringe (1), injection syringe (1) and protective sheath (6) constitute sealing connection through anticreep ring (8) in the annular groove, protective sheath (6) are filled there is the disinfection material.

2. A medical safety syringe according to claim 1, wherein: the outer side wall of the elastic sealing head (4) is provided with a plurality of raised sealing rings (41), and the sealing rings (41) and the inner wall of the injection tube (1) form multiple sealing.

3. A medical safety syringe according to claim 1, wherein: the outer wall that the injection of injection pipe (1) front end was chewed has toper boss (11), the conical surface of toper boss (11) is outwards, the afterbody inner wall of syringe needle (5) has the back taper boss opposite with injection outer wall toper boss (11), and two bosss extrude each other and constitute to agree with.

4. A medical safety syringe according to claim 3, wherein: the conical taper of the conical boss (11) on the outer wall of the injection nozzle is 15-30 degrees.

5. A medical safety syringe according to claim 1, wherein: the filter cylinder net (7) comprises an open cylinder opening, a net cylinder wall and a net cylinder bottom, and the inner diameter of the filter cylinder net (7) is slightly smaller than the inner diameter of an injection nozzle at the front end of the injection pipe (1).

6. A medical safety syringe according to claim 5, wherein: the bottom of the filter cylinder net (7) is outwards arranged in the injection nozzle.

7. A medical safety syringe according to claim 1, wherein: the sterilizing material is sterilized cotton or sterilized sponge.

8. A medical safety syringe according to claim 1, wherein: the elastic sealing head (4) is made of elastic rubber materials.

9. A medical safety syringe according to claim 1, wherein: the elastic sealing head (4) is hemispherical.

10. A medical safety syringe according to claim 1, wherein: the outer wall of the injection tube (1) is provided with scale marks.