CN113599629A

CN113599629A - Disposable syringe capable of preventing injury

Info

Publication number: CN113599629A
Application number: CN202111001977.1A
Authority: CN
Inventors: 梁志兰
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-30
Filing date: 2021-08-30
Publication date: 2021-11-05

Abstract

The invention relates to the technical field of medical equipment and discloses a disposable injector for preventing people from being injured. Through the straight-bar, the air cavity, high-pressure air chamber's setting, promote the piston along with the thimble, with the inside air extrusion entering cavity in air cavity, thereby make straight-bar tail end prong puncture high pressure resistant film, the inside high-pressure inert gas of high-pressure air chamber gets into the cavity, high-pressure gas can promote the straight-bar and remove to syringe needle one end, and in getting into the needle tubing along the syringe needle, and stretch out from the needle tubing, again because at first stretch out from the needle tubing at first the plug segment that is downcut, just so people just can not have the most advanced pricking's that is sharp by the syringe needle possibility when handling or destroying the contact syringe needle, can avoid the injury that the syringe needle stabbed and injure and cause, even infect, and can thoroughly avoid by used repeatedly.

Description

Disposable syringe capable of preventing injury

Technical Field

The invention relates to the technical field of medical equipment, in particular to a disposable syringe capable of preventing people from being injured.

Background

A syringe is a common medical device that primarily uses a needle to draw or inject a gas or liquid. The common medical injector is a medical apparatus for injecting liquid medicine into tissues, subcutaneous tissues, blood vessels and muscles by a needle puncturing technology.

Since the common syringes are used in large quantities in large hospitals and small medical and health stations, and in order to prevent the needle holes in the used syringes from causing infection, disease transmission and the like caused by blood, medicines and the like, the medical syringes are all used as disposable medical appliances, and in order to ensure that the syringes are not reused after being used, the medical staff usually break the needle after the injection is completed, so as to avoid the reuse of the syringes, but the method still has the possibility of reuse, because the needle is broken, the needle tube is still intact, the possibility of reuse exists, the reusable syringes have the hidden danger of cross infection, the disease transmission is easily caused, and the sharp needle can be directly destroyed to the medical staff no matter the needle is broken or directly destroyed after the injection is completed, Personnel are destroyed to cause injury and even infection.

Disclosure of Invention

Aiming at the defects of the background technology, the invention provides a disposable syringe capable of preventing people from being injured, which has the advantages of being capable of being self-destructed quickly and avoiding the injury of people caused by a needle head, and solves the problems in the background technology.

The invention provides the following technical scheme: the utility model provides a prevent hindering disposable syringe of people, includes the cylinder, the upper end joint of cylinder has the syringe needle, the plug has been cup jointed in the inside activity of cylinder, the bottom fixedly connected with ejector pin of plug, the upper portion activity of cylinder inner chamber has cup jointed the supporting sleeve, the equal fixedly connected with other end in both sides and cylinder fixed connection's of supporting sleeve upper end supporting spring, the both sides at supporting sleeve upper end middle part are provided with the thimble with cylinder fixed connection.

Preferably, the cavity is formed in the ejector rod, the high-pressure air chamber communicated with the cavity is formed in the bottom end of the ejector rod, high-pressure inert gas is filled in the high-pressure air chamber, the straight rod is movably sleeved in the cavity, the upper end of the straight rod is fixedly connected with a connecting spring fixedly connected with a rubber plug at the other end, air chambers communicated with the upper end of the cavity are arranged on two sides of the inside of the rubber plug, a reset spring is fixedly connected to the bottom of each air chamber, a piston movably sleeved with the air chambers is fixedly connected to the other end of the reset spring, and a limit ring is fixedly connected to the middle of the upper end of the inner chamber of the needle cylinder.

Preferably, the thimble is provided with the tip towards the one end of plug, and the both sides of tip all are provided with the barb, it is provided with flexible rubber to support sleeve bottom and thimble corresponding position.

Preferably, the straight rod is provided with a tip towards one end of the high-pressure air chamber, the inert gas in the high-pressure air chamber is helium, and a high-pressure-resistant film is arranged at a position where the high-pressure air chamber is communicated with the cavity.

Preferably, the diameter of the straight rod is equal to the inner diameters of the limiting ring and the needle tube, a tip inclined plane is arranged at one end, facing the rubber plug, of the limiting ring, and the length of the straight rod is greater than that of the needle tube.

The invention has the following beneficial effects:

1. through the setting of supporting sleeve, thimble, after normal injection, medical personnel can press the ejector pin through the secondary, brute force, support the supporting sleeve with the inside plug of syringe to continuously press, make the thimble tip puncture the flexible rubber of supporting sleeve bottom and prick into the plug, because thimble tip both sides are provided with the barb, can make the thimble prick and be difficult to extract after advancing the plug, consequently can't carry out used repeatedly, reach the self-destruction of this syringe with this.

2. Through the straight-bar, the air cavity, high-pressure air chamber's setting, promote the piston along with the thimble, make the piston get into the cavity with the inside air extrusion of air cavity, make the straight-bar remove to the ejector pin rear end, thereby make straight-bar tail end prong puncture the high pressure resistant film between high-pressure air chamber and the cavity, the inside high-pressure inert gas of high-pressure air chamber gets into the cavity, therefore high-pressure gas can promote the straight-bar and remove to syringe needle one end, and along the syringe needle entering syringe needle in, and stretch out from the needle tubing, because the straight-bar front end is provided with the coupling spring who is connected with the plug, consequently stretch out from the needle tubing at first the plug subsection that is downcut, people just can not have the possibility of being stabbed by the sharp most advanced of syringe needle when handling or destroying the contact syringe needle like this, can avoid the injury that the syringe needle stabbed caused, infection even, and can thoroughly avoid being used repeatedly.

Drawings

FIG. 1 is a schematic view of the overall appearance of the structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

fig. 3 is an enlarged schematic view of the structure a of the present invention.

In the figure: 1. a needle cylinder; 2. a needle head; 3. a rubber plug; 4. a top rod; 5. a support sleeve; 6. a support spring; 7. a thimble; 8. a cavity; 9. a straight rod; 10. a connecting spring; 11. a high pressure gas chamber; 12. an air cavity; 13. a return spring; 14. a piston; 15. a limit ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, a disposable injector for preventing injury, comprising a needle cylinder 1, a needle 2 is clamped at the upper end of the needle cylinder 1, a rubber plug 3 is movably sleeved inside the needle cylinder 1, a top rod 4 is fixedly connected to the bottom of the rubber plug 3, a supporting sleeve 5 is movably sleeved on the upper portion of the inner cavity of the needle cylinder 1, supporting springs 6 with the other end fixedly connected with the needle cylinder 1 are fixedly connected to both sides of the upper end of the supporting sleeve 5, ejector pins 7 fixedly connected with the needle cylinder 1 are arranged on both sides of the middle portion of the upper end of the supporting sleeve 5, a cavity 8 is formed inside the top rod 4, a high-pressure air chamber 11 communicated with the cavity 8 is formed at the bottom end of the top rod 4, high-pressure inert gas is filled inside the high-pressure air chamber 11, a straight rod 9 is movably sleeved inside the cavity 8, a tip is arranged at one end of the straight rod 9 facing the high-pressure air chamber 11, the inert gas inside the high-pressure air chamber 11 is helium, and the high-pressure air chamber 11 is provided with the high-pressure resistant film with the cavity 8 department of being linked together, the upper end fixedly connected with other end of straight-bar 9 is the connecting spring 10 of a plug 3 fixed connection, the inside both sides of plug 3 all are provided with the air cavity 12 that is linked together with the upper end of cavity 8, the bottom fixedly connected with reset spring 13 of air cavity 12, the other end fixedly connected with of reset spring 13 and the piston 14 that air cavity 12 activity cup jointed, the middle part fixedly connected with spacing ring 15 of the upper end of the inner chamber of syringe 1.

Wherein, thimble 7 is provided with the tip towards the one end of plug 3, and the both sides of tip all are provided with the barb, and 5 bottoms of supporting sleeve correspond the position with the thimble and are provided with flexible rubber, press ejector pin 4 through secondary, brute force for 7 tips of thimble pierce the flexible rubber of 5 bottoms of supporting sleeve and prick into plug 3, because 7 tip both sides of thimble are provided with the barb, can make 7 prick of thimble be difficult to extract after plug 3 to this reaches the self-destruction of this syringe.

Wherein, the diameter of straight-bar 9 equals with spacing ring 15, 2 needle tubing internal diameters of syringe needle, and spacing ring 15 is provided with most advanced inclined plane towards the one end of plug 3, and the length of straight-bar 9 is greater than the length of 2 needle tubing of syringe needle, and the straight-bar of being convenient for stretches into in 2 needle tubing of syringe needle, can block up the needle tubing to replace syringe needle 2 with straight-bar 9, avoid sharp syringe needle 2 to hinder the people.

According to the working principle, after normal injection, medical personnel can press the ejector rod 4 by two times and strong force to tightly press the rubber plug 3 in the injector against the support sleeve 5 and continuously press the ejector rod to ensure that the tip of the ejector pin 7 pierces the flexible rubber at the bottom of the support sleeve 5 and pierces the rubber plug 3, and the two sides of the tip of the ejector pin 7 are provided with barbs, so that the ejector pin 7 is difficult to pull out after piercing the rubber plug 3, and the self-destruction of the injector is achieved;

along with the continuous propulsion of the thimble 7, the tip of the thimble 7 pushes the piston 14, so that the piston 14 overcomes the elasticity of the return spring 13 to move downwards, the air in the air chamber 12 is extruded into the cavity 8, the straight rod 9 overcomes the pulling force of the connecting spring 10 to move towards the rear end of the ejector rod 4, so that the tip at the tail end of the straight rod 9 pierces a high-pressure resistant film between the high-pressure air chamber 11 and the cavity 8, the high-pressure inert gas in the high-pressure air chamber 11 enters the cavity 8, meanwhile, the rubber plug 3 is in contact with the limiting ring 15, the limiting ring 15 cuts off the middle part of the rubber plug 3, so that the high-pressure gas can push the straight rod 9 to move towards one end of the needle head 2, enter the needle tube of the needle head 2 along the needle head 2 and extend out of the needle tube, and because the front end of the straight rod 9 is provided with the connecting spring 10 connected with the rubber plug 3, the rubber plug 3 extending out of the needle tube is a small section cut firstly, thus, the possibility of being punctured by the sharp tip of the needle 2 does not exist when people handle or destroy the contact needle 2, the injury and even infection caused by the puncture of the needle 2 can be avoided, and the repeated use can be thoroughly avoided.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a prevent hindering disposable syringe of people, includes cylinder (1), the upper end joint of cylinder (1) has syringe needle (2), plug (3) have been cup jointed in the inside activity of cylinder (1), the bottom fixedly connected with ejector pin (4) of plug (3), its characterized in that: the upper portion activity of cylinder (1) inner chamber has cup jointed support sleeve (5), the equal fixedly connected with other end of both sides of the upper end of support sleeve (5) and cylinder (1) fixed connection's supporting spring (6), the both sides in the middle part of support sleeve (5) upper end are provided with thimble (7) with cylinder (1) fixed connection.

2. A single-use syringe for preventing injury as defined in claim 1, wherein: the structure is characterized in that a cavity (8) is formed in the ejector rod (4), a high-pressure air chamber (11) communicated with the cavity (8) is formed in the bottom end of the ejector rod (4), high-pressure inert gas is filled in the high-pressure air chamber (11), a straight rod (9) is movably sleeved in the cavity (8), a connecting spring (10) fixedly connected with a rubber plug (3) at the other end is fixedly connected to the upper end of the straight rod (9), air cavities (12) communicated with the upper end of the cavity (8) are formed in two sides of the inner portion of the rubber plug (3), a reset spring (13) is fixedly connected to the bottom of each air cavity (12), a piston (14) movably sleeved with each air cavity (12) is fixedly connected to the other end of each reset spring (13), and a limiting ring (15) is fixedly connected to the middle of the upper end of the inner cavity of the needle cylinder (1).

3. A single-use syringe for preventing injury as defined in claim 1, wherein: thimble (7) are provided with the tip towards the one end of plug (3), and the both sides of tip all are provided with the barb, support sleeve (5) bottom corresponds the position with the thimble and is provided with flexible rubber.

4. A single-use syringe for preventing injury as defined in claim 1, wherein: the straight rod (9) is provided with a tip towards one end of the high-pressure air chamber (11), inert gas in the high-pressure air chamber (11) is helium, and a high-pressure-resistant film is arranged at the position where the high-pressure air chamber (11) is communicated with the cavity (8).

5. A single-use syringe for preventing injury as defined in claim 1, wherein: the diameter of the straight rod (9) is equal to the inner diameter of the limiting ring (15) and the needle tube of the needle head (2), a tip inclined plane is arranged at one end, facing the rubber plug (3), of the limiting ring (15), and the length of the straight rod (9) is larger than that of the needle tube of the needle head (2).