CN210301919U

CN210301919U - Syringe capable of preventing puncture

Info

Publication number: CN210301919U
Application number: CN201920810613.XU
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 capable of preventing puncture in the field of medical instruments, which comprises a barrel body, wherein a push rod capable of moving up and down in the barrel body is arranged in the barrel body, one end of the barrel body, which is far away from the push rod, is connected with a needle head, the outer side of the barrel body is connected with a fixed sleeve, the outer side of the barrel body is sheathed with a protective sleeve, the protective sleeve can move up and down in the fixed sleeve, one side of the protective sleeve, which is arranged relative to the inner wall of the fixed sleeve, is connected with a limiting spring, the end part of the limiting spring, which extends out to the fixed sleeve, is connected with a limiting block; the utility model discloses the security is high, can be applied to in the injection treatment work.

Description

Syringe capable of preventing puncture

Technical Field

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

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 "can prevent syringe that stabbing", 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 forms 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 the threaded inner wall of design in the junction outside at the needle tubing, with connector and sleeve pipe threaded connection, in order. However, the device is inconvenient to operate when being mounted and dismounted, the needle head is exposed, the risk of needle stick injury of a user is increased, medical workers are easy to stab in the process of collecting and processing the syringe after use, blood infectious diseases are infected by the medical workers because the blood infectious diseases are stabbed by the needle head, and the device is inconvenient to use and poor in safety.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model discloses an it is weak enough among the prior art to overcome the utility model, solves the poor technical problem of security among the prior art, provides a syringe that can prevent stabbing, the utility model discloses the security is high.

The purpose of the utility model is realized like this: the utility model provides a syringe that can prevent stabbing, 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 connected with fixed cover, and the outside cover of barrel is equipped with the protective sheath, and the protective sheath can reciprocate in fixed cover, one side that the fixed cover inner wall of protective sheath relatively set up is connected with spacing spring, the end connection that spacing spring stretches out to fixed cover has the stopper, and the stopper is contradicted at fixed cover inner wall, it has spacing hole to open on the protective sheath, and when the protective sheath rebound exposed the syringe needle, the.

The utility model discloses during the use, upwards promote the protective sheath, make the spacing block in the spacing hole, expose the syringe needle, insert the liquid medicine with the syringe needle, stimulate the push rod, make the liquid medicine inhale in the barrel, when injecting, clean skin with alcohol, prick the skin with the syringe needle after, promote the push rod, the liquid medicine gets into the human body, extract the syringe needle, press down the spacing hole, make the stopper break away from, the protective sheath moves down and gets back to the initial position, the syringe needle is hidden in the protective sheath, the syringe needle can not expose, put the syringe after using into the waste ware collecting box at last, the utility model discloses after using, need not pull out the syringe needle or cover the protective sheath towards the syringe needle, through adjusting the position of protective sheath on the barrel, can realize exposing or hiding of syringe needle, can not stab medical personnel, prevent the infection of blood infectious disease; can be applied to injection treatment work.

In order to realize the reciprocating of protective sheath, the 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 the protective sheath upside, and when reset spring was in natural state, the syringe needle was in the protective sheath.

In order to limit the position of the limiting block on the protective sleeve, an upper limiting boss and a lower limiting boss are arranged on the protective sleeve, and the limiting block is arranged between the upper limiting boss and the lower limiting boss.

In order to connect the limiting spring on the protective sleeve, a limiting bulge is arranged on the protective sleeve between the upper limiting boss and the lower limiting boss, and the limiting spring is sleeved on the limiting bulge.

As the novel further improvement of this use, the outside of fixed cover is equipped with the connecting piece that sets up downwards and extend to spacing hole, the connecting piece lower part is equipped with and presses the briquetting corresponding with spacing hole.

In order to realize the connection of the needle head and the barrel body, the lower end of the barrel body is provided with a connecting pipe, the outer side of the connecting pipe is provided with a connecting bulge, the inner side of the needle head is provided with a clamping groove, and the connecting bulge can be just clamped in the clamping groove.

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 3, a clamping groove 301, a fixing sleeve 4, a limiting hole 401, a connecting piece 402, a pressing block 403, a fixing boss 404, a protecting sleeve 5, a limiting boss 501, a limiting boss 502, a limiting boss 503, a handle 504, a limiting block 6, a reset spring 7 and a limiting spring 8.

Detailed Description

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

As shown in fig. 1 to 6, an injector capable of preventing puncture 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 push handle 201 is connected to an outward end of the push rod 2, a needle 3 is connected to an end of the barrel 1 away from the push rod 2, a connecting pipe 101 is arranged at the lower end of the barrel 1, a connecting protrusion 102 is arranged at the outer side of the connecting pipe 101, a slot 301 is arranged at the inner side of the needle 3, the connecting protrusion 102 can be just clamped in the slot 301, a fixing sleeve 4 is connected to the outer side of the barrel 1, a protecting sleeve 5 is sleeved on the outer side of the barrel 1, a return spring 7 is sleeved on the outer side of the barrel 1, an upward end of the return spring 7 is abutted on the barrel 1, a downward end of the return spring 7 is abutted on the upper side of the protecting sleeve 5, when the return spring 7 is in, one side of the protective sleeve 5 arranged relative to the inner wall of the fixed sleeve 4 is connected with a limiting spring 8, the protective sleeve 5 is provided with an upper limiting boss 501 and a lower limiting boss 502, a limiting block 6 is arranged between the upper limiting boss 501 and the lower limiting boss 502, the lower end of the fixed sleeve 4 is provided with a fixed boss 404, the lower limiting boss 502 is abutted against the upper side of the fixed boss 404, a limiting bulge 503 is arranged on the protective sleeve 5 between the upper limiting boss 501 and the lower limiting boss 502, the limiting spring 8 is sleeved on the limiting bulge 503, the end part of the limiting spring 8 extending towards the fixed sleeve 4 is connected with the limiting block 6, the limiting block 6 is abutted against the inner wall of the fixed sleeve 4, a limiting hole 401 is arranged, the limiting block 6 is clamped in the limiting hole 401, the outer side of the fixing sleeve 4 is provided with a connecting piece 402 which is arranged downwards and extends towards the limiting hole 401, and the lower part of the connecting piece 402 is provided with a pressing block 403 corresponding to the limiting hole 401.

In the utility model, when the limiting block 6 is not in the limiting hole 401, the limiting spring 8 is in a compressed state, when in use, the handle of the protective sleeve 5 is pushed upwards, the upper limiting boss 501 compresses the reset spring 7, the protective sleeve 5 moves upwards along the barrel 1, the movement of the protective sleeve 5 enables the limiting block 6 to move along with the protective sleeve 5, when the limiting block 6 moves into the limiting hole 401, the limiting block 6 moves upwards under the elastic action of the limiting spring 8 and is clamped into the limiting hole 401, at the moment, the protective sleeve 5 is fixed, the connecting pipe 101 is exposed, the needle head 3 is pushed onto the connecting pipe 101, the connecting bulge 102 is clamped on the clamping groove 301, the connection between the needle head 3 and the connecting pipe 101 is realized, the needle head 3 is inserted into the liquid medicine, the pushing handle 201 is pulled, the pushing rod 2 moves outwards to enable the liquid medicine to be sucked into the barrel 1, when in injection, the skin is cleaned by alcohol, after, after injection is completed, the needle head 3 is pulled out, the pressing block 403 is pressed, the pressing block 403 presses the limiting block 6 inwards, the limiting block 6 compresses the limiting spring 8, the pressing block 403 is separated from the limiting hole 401, the elastic restoring force of the reset spring 7 pushes the protective sleeve 5 to move downwards, the limiting block 6 moves downwards along with the protective sleeve 5 to return to the initial position, the needle head 3 is hidden in the protective sleeve 5 again, the needle head 3 is not exposed, the used syringe is placed into a waste collection box, the needle head 3 does not need to be pulled out or the protective sleeve 5 is covered on the needle head 3, the position of the protective sleeve 5 on the barrel body 1 can be adjusted, the needle head 3 can be exposed or hidden, medical personnel cannot be punctured, infection of blood infectious diseases is prevented, and 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. The utility model provides a can prevent syringe that stabs, 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, a serial communication port, the barrel outside is connected with fixed cover, and the outside cover of barrel is equipped with the protective sheath, and the protective sheath can reciprocate in fixed cover, one side that the fixed cover inner wall of protective sheath relatively set up is connected with spacing spring, the end connection that spacing spring stretches out to fixed cover has the stopper, and the stopper is contradicted at fixed cover inner wall, it has spacing hole to open on the protective sheath, and when the protective sheath rebound exposed the syringe needle, the.

2. The syringe of claim 1, wherein the barrel is sleeved with a return spring, an upward end of the return spring abuts against the barrel, a downward end of the return spring abuts against an upper side of the protective sleeve, and the needle is in the protective sleeve when the return spring is in a natural state.

3. The syringe of claim 1, wherein the protective sheath is provided with an upper limit boss and a lower limit boss, and the limit block is arranged between the upper limit boss and the lower limit boss.

4. The syringe capable of preventing puncture according to claim 3, wherein the protective sleeve between the upper limit boss and the lower limit boss is provided with a limit protrusion, and the limit spring is sleeved on the limit protrusion.

5. The syringe as claimed in claim 4, wherein the fixing sleeve has a connecting member extending downward toward the position-limiting hole and a pressing block corresponding to the position-limiting hole.

6. A puncture-proof syringe as claimed in claim 1, wherein the lower end of the barrel is provided with a connecting tube, the outer side of the connecting tube is provided with a connecting protrusion, the inner side of the needle head is provided with a slot, and the connecting protrusion can be just clamped in the slot.

7. A puncture-proof syringe as claimed in claim 1, wherein the outward end of the push rod is connected with a push handle, and the protective sheath is provided with a handle.