CN210301920U

CN210301920U - Syringe

Info

Publication number: CN210301920U
Application number: CN201920810623.3U
Authority: CN
Inventors: 徐慧文; 陆小庆; 仲敏; 汪苏杭; 徐琳; 张翼夫
Original assignee: Yangzhou University
Current assignee: Yangzhou University
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2020-04-14
Anticipated expiration: 2029-05-31

Abstract

The utility model provides a syringe in the technical field of medical devices, comprising a cylinder body, a push rod that can move up and down in the cylinder body is installed in the cylinder body, a needle is connected to the end of the cylinder body away from the push rod, and an outer side of the cylinder body is provided with a needle. A fixed sleeve, one end of the fixed sleeve is connected to the cylinder body, and the other end of the fixed sleeve is elastically connected with a protective sleeve that can move up and down, and the needle can extend downward into the protective sleeve; the utility model has high safety and can be applied to injection therapy at work.

Description

Syringe

Technical Field

The utility model belongs to the technical field of medical instrument, in particular to syringe.

Background

The injector is a common medical tool, is mainly used for sucking and injecting liquid medicine, and can also be used for puncture, nasal feeding and other nursing operations. The syringe that present domestic hospital used mainly comprises syringe needle, pintle, needle tubing, nipple and piston, and the junction of middle pintle and nipple can be dismantled in a flexible way, and in the use, the junction need guarantee good compactness and seal to maintain the performance of syringe. When the needle head and the needle tube are separated, convenience and safety need to be ensured so as to prevent needle stick injury. In clinical work, however, the connection is often too tight, so that the detachment is inconvenient; or the connection part is loosened and falls off due to insufficient tightness, and even the liquid medicine leaks out. In addition, when the static push pump is used, the phenomenon that the connection between the injector and the extension tube is loosened and falls off can occur due to the movement of a patient, if the phenomenon cannot be found in time, not only can the liquid medicine be wasted and the treatment of the patient be delayed, but also the blood of the patient can flow out of the body along with the extension tube, so that the doctor-patient contradiction can be caused.

In the chinese patent database, the patent name "an injector" is disclosed, application publication date is 20171212, application publication number is CN 107456631 a's chinese patent, the device includes the syringe needle, the cylinder and set up the push rod in the cylinder, the cylinder includes the needle tubing and the connector of being connected with the needle tubing, the tip that the needle tubing was kept away from to the connector is equipped with annular protrusion, the cylinder includes the connecting pipe, sleeve pipe and barrel, the sleeve pipe cover is established in the outside of connecting pipe and form the space that is used for holding the connector between sleeve pipe and the connecting pipe, sheathed tube inner wall is equipped with the screw thread, connector and sleeve pipe threaded connection, connecting pipe and sleeve pipe all are connected with the barrel, the device is through the sleeve pipe of inner wall area screw thread of design in the junction outside at the needle tubing, with connector and sleeve pipe. However, the needle of the device is exposed, so that the risk of needle stick injury of a user is increased, medical care personnel are easy to stab in the process of collecting and treating the syringe after use, the medical care personnel are infected due to the stabbing of the needle, and the safety is poor.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model discloses an overcome the weak point among the prior art, solve the poor technical problem of security among the prior art, provide an injector, the utility model discloses the security is high.

The purpose of the utility model is realized like this: the utility model provides an injector, includes the barrel, install the push rod that can reciprocate in the barrel, the one end of keeping away from the push rod on the barrel is connected with the syringe needle, the barrel outside is equipped with fixed cover, and the one end of fixed cover is connected on the barrel, and the other end elastic connection of fixed cover has the protective sheath that can reciprocate, the syringe needle can stretch into in the protective sheath downwards.

The utility model discloses during the use, move the protective sheath upwards earlier, expose the syringe needle, insert the liquid medicine with the syringe needle, the pulling push rod makes the liquid medicine inhale in the barrel, loosen the protective sheath, the protective sheath moves down to the initial position, when injecting, clean skin with alcohol, press skin downwards with the protective sheath, the protective sheath moves upwards, the skin is pricked to the syringe needle, promote the push rod, the liquid medicine gets into the human body, extract the syringe needle, the protective sheath moves down to the initial position again, the syringe needle is hidden in the protective sheath, the syringe needle does not expose, put into the useless ware collecting box with the syringe after using at last wholly, the utility model discloses after using, need not pull out the syringe needle or cover the protective sheath on the syringe needle, the protective sheath can automatic reply after having injected, hide the syringe needle, can not stab medical personnel, prevent infectious disease's; can be applied to injection treatment work.

Can reciprocate in order to realize the protective sheath, be equipped with spacing boss on the protective sheath, barrel outside cover is equipped with reset spring, and reset spring one end up is contradicted on the barrel, and reset spring one end down is contradicted on spacing boss, the lower extreme of fixed cover is equipped with fixed boss, spacing boss is contradicted at fixed boss upside.

In order to realize the connection of the needle head and the barrel, a connecting pipe is arranged on the barrel, a connecting bulge is arranged on the connecting pipe, a clamping groove is arranged on the inner side of the needle head, and the connecting bulge can be just clamped in the clamping groove.

In order to facilitate observation of whether the needle is injected into the skin, the protective sleeve is provided with a viewing port which extends to the bottom side of the protective sleeve.

In order to facilitate injection, one end of the push rod, which faces outwards, is connected with a push handle, and a handle is arranged on the protective sleeve.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a view from a-a of fig. 1.

Fig. 3 is a partially enlarged view of fig. 2 at B.

Fig. 4 is a perspective view of the present invention.

Fig. 5 is a schematic structural view of the middle needle of the present invention.

Fig. 6 is a schematic structural view of the middle cylinder of the present invention.

In the figure: the novel syringe comprises a barrel body 1, a connecting pipe 101, a connecting bulge 102, a push rod 2, a push handle 201, a needle head 3, a clamping groove 301, a fixing sleeve 4, a fixing boss 401, a protective sleeve 5, a limiting boss 501, a handle 502, a visual inspection port 503 and a return spring 6.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

An injector as shown in fig. 1 to 6 comprises a barrel 1, a push rod 2 capable of moving up and down in the barrel 1 is installed in the barrel 1, a needle 3 is connected to one end of the barrel 1 far from the push rod 2, a connecting pipe 101 is arranged on the barrel 1, a connecting protrusion 102 is arranged on the connecting pipe 101, a slot 301 is arranged on the inner side of the needle 3, the connecting protrusion 102 can be just clamped in the slot 301, a fixing sleeve 4 is arranged on the outer side of the barrel 1, one end of the fixing sleeve 4 is connected to the barrel 1, a protecting sleeve 5 is elastically connected to the other end of the fixing sleeve 4, a limiting boss 501 is arranged on the protecting sleeve 5, a return spring 6 is sleeved on the outer side of the barrel 1, the upward end of the return spring 6 is abutted against the barrel 1, the downward end of the return spring 6 is abutted against the limiting boss 501, a fixing boss 401 is arranged, the needle head 3 can extend downwards into the protective sleeve 5, a viewing opening 503 is formed in the protective sleeve 5, the viewing opening 503 extends to the bottom side of the protective sleeve 5, the outward end of the push rod 2 is connected with a push handle 201, and a handle 502 is arranged on the protective sleeve 5.

When the utility model is used, the handle 502 of the protective sleeve 5 is pushed upwards, the limit boss 501 compresses the reset spring 6, the protective sleeve 5 moves upwards along the barrel 1, the connecting pipe 101 is exposed, the needle 3 is pushed onto the connecting pipe 101, the connecting bulge 102 is clamped on the clamping groove 301, the connection between the needle 3 and the connecting pipe 101 is realized, the needle 3 is inserted into the liquid medicine, the push handle 201 is pulled, the push rod 2 moves outwards to suck the liquid medicine into the barrel 1, the handle 502 is released, the protective sleeve 5 returns to the initial position under the restoring force action of the reset spring 6, when injection is carried out, the skin is wiped by alcohol, the protective sleeve 5 is pressed downwards quickly, the needle 3 can be observed to prick the skin through the observation opening 503, the setting of the observation opening 503 can visually observe the position of the needle 3, the push handle 201 is pushed, the liquid medicine is pushed out, the injection is completed, the needle 3 is pulled out, the protective sleeve 5 returns to the initial position, the needle head 3 is hidden in the protective sleeve 5 again, the needle head 3 is not exposed, and finally the used injector is placed in the waste device collecting box, after the injection of the utility model is completed, the needle head 3 does not need to be pulled down or the protective sleeve 5 is covered on the needle head 3, the protective sleeve 5 can automatically return after the injection, the needle head 3 is hidden, the medical personnel can not be stabbed, the infection of blood infectious diseases is prevented, and the safety is high; can be applied to injection treatment work.

The present invention is not limited to the above embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some replacements and transformations for some technical features without creative labor according to the disclosed technical contents, and these replacements and transformations are all within the protection scope of the present invention.

Claims

1. a syringe, comprising a cylinder body, a push rod that can move up and down in the cylinder body is installed in the cylinder body, and a needle is connected to one end away from the push rod on the cylinder body, it is characterized in that: the outer side of the cylinder body is provided with a needle. There is a fixed sleeve, one end of the fixed sleeve is connected to the cylinder body, and the other end of the fixed sleeve is elastically connected with a protective sleeve that can move up and down, and the needle can extend downward into the protective sleeve.

2 . The syringe according to claim 1 , wherein the protective sleeve is provided with a limit boss, the outer side of the cylinder is sleeved with a return spring, and the upward end of the return spring is against the cylinder, 2 . The downward end of the return spring is in contact with the limiting boss, the lower end of the fixing sleeve is provided with a fixing boss, and the limiting boss is in contact with the upper side of the fixing boss.

3. A syringe according to claim 1, characterized in that, a connecting tube is provided on the cylinder body, a connecting protrusion is provided on the connecting tube, a clamping groove is provided on the inner side of the needle, and the connecting protrusion is provided on the inner side of the needle. It can just snap into the card slot.

4 . The syringe according to claim 1 , wherein an inspection port is opened on the protective sleeve, and the inspection port extends to the bottom side of the protective sleeve. 5 .

5 . The syringe according to claim 1 , wherein a push handle is connected to the outer end of the push rod, and a handle is provided on the protective sleeve. 6 .