CN106362245A - A syringe with improved structure - Google Patents

Abstract

The invention discloses an injector with improved structure, wherein a conical boss is formed on the top of a syringe, a syringe needle is fixedly inserted on the boss, a protective sleeve is sleeved outside the syringe needle, the protective sleeve consists of a base and an upper tube sleeve, a vertically downward connecting sleeve is formed at the lower end of the base, the connecting sleeve of the base is inserted on the boss of the syringe, a ring platform is formed on the top surface of the syringe outside the boss, a plurality of flanges are formed on the inner wall of the ring platform, grooves matched with the flanges are formed on the outer wall of the connecting sleeve, the flanges are inserted in the grooves of the connecting sleeve of the base, the outer wall of the connecting sleeve is abutted against the inner wall of the ring platform, ribs are formed on the outer wall of the connecting sleeve between adjacent grooves, reinforcing sleeves are formed at the outer ends of the ribs, and the reinforcing sleeves are inserted on the ring platform and. It has strengthened the joint strength between protective sheath and the syringe, and the state that reducible protective sheath and syringe break away from avoids breaking away from the syringe needle of protective sheath and causes the injury to medical personnel or recovery personnel.

Description

A syringe with improved structure

Technical field:

The invention relates to the technical field of medical instruments, and more specifically relates to a syringe with improved structure.

Background technique:

Syringes, generally one-time products, become dangerous items after being contaminated with medicines or pathogens on patients after use, and there are countless cases of accidental pricking by these instruments with needles. In order to avoid such contaminated stings There are some protective devices in the prior art, the existing protective devices are generally a simple needle cap, and the needle cap is set on the needle head, but this type of needle cap and needle The fit of the tool is not precise, and at present, in order to prevent the used syringe from flowing out, the hospital often breaks the core rod of the syringe directly after use, so the medical staff often breaks the core rod or the recycling personnel often break the needle cap and the needle during the recovery process. Then it is easy to cause injury to medical staff or recovery personnel.

Invention content:

The purpose of the present invention is to address the shortcomings of the prior art, and provide a syringe with improved structure, which enhances the connection strength between the protective cover and the syringe, thereby reducing the detachment of the protective cover from the syringe.

To achieve the above object, the technical scheme adopted in the present invention is as follows:

A syringe with improved structure, including a syringe, the top of the syringe is formed with a conical boss, the boss is plugged and fixed on the injection needle, the injection needle is inserted with a protective sleeve, and the protective sleeve is composed of a conical base and It is composed of a cylindrical upper pipe sleeve. The lower end of the base is formed with a vertically downward connecting sleeve. The connecting sleeve of the base is inserted into the boss of the needle cylinder. There are several flanges formed on the inner wall of the table, grooves matching the flanges are formed on the outer wall of the connecting sleeve on the base, the flanges are inserted into the grooves of the connecting sleeve of the base, and the outer wall of the connecting sleeve rests on the ring Ribs are formed on the outer wall of the connecting sleeve between adjacent grooves on the inner wall of the platform, and reinforcing sleeves are formed on the outer ends of the ribs, and the reinforcing sleeve is inserted into the ring platform and leans against the outer wall of the ring platform.

Several ring grooves are formed on the outer wall of the upper ring platform of the syringe.

The grooves on the connecting sleeve of the base are arc-shaped, and the grooves are evenly distributed in a ring around the central axis of the connecting sleeve, and the number of grooves on the connecting sleeve is the same as the number of flanges on the ring platform.

The inner wall of the connecting sleeve on the base is formed into a conical shape, and the inclination angle of the inner wall of the connecting sleeve is equal to the inclination angle of the boss on the syringe.

A vertical strut is formed on the top of the upper sleeve, and a handle is formed on the top of the strut.

The beneficial effects of the present invention are: it has a simple structure, the structure of the protective cover is rectified, and the contact area between the protective cover and the syringe is increased, thereby increasing the connection strength between them, thereby reducing the detachment state of the protective cover from the syringe and avoiding detachment The injection needle of the protective cover will cause injury to medical staff or recovery personnel.

Description of drawings:

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the structural representation of cross section of the present invention;

Fig. 3 is a schematic structural view of the top of the syringe of the present invention;

Fig. 4 is a schematic structural view of the protective sleeve of the present invention;

Fig. 5 is a structural schematic diagram of the changing angle of the protection sleeve of the present invention.

In the figure: 1, syringe; 11, boss; 12, ring platform; 121, flange; 122, ring groove; 2, protective sleeve; 21, base; 211, groove; 212, rib; 213, reinforcement 22, the upper pipe sleeve; 23, the pole; 24, the handle; 3, the injection needle.

detailed description:

Embodiment: As shown in Figures 1 to 5, a syringe with improved structure includes a syringe 1, and a conical boss 11 is formed on the top of the syringe 1, and the boss 11 is plugged and fixed on the injection needle 3, and the injection The outer sleeve of the needle 3 has a protective sleeve 2. The protective sleeve 2 is composed of a conical base 21 and a cylindrical upper sleeve 22. The lower end of the base 21 is formed with a vertically downward connecting sleeve, and the connecting sleeve of the base 21 is inserted into the sleeve. On the boss 11 of the syringe 1, a ring platform 12 is formed on the top surface of the syringe 1 outside the boss 11, and several flanges 121 are formed on the inner wall of the ring platform 12, and a plurality of flanges 121 are formed on the outer wall of the connecting sleeve on the base 21. There is a groove 211 matched with the flange 121, the flange 121 is inserted into the groove 211 of the connecting sleeve of the base 21, the outer wall of the connecting sleeve is against the inner wall of the ring platform 12, and the gap between adjacent grooves 211 Ribs 212 are formed on the outer wall of the connecting sleeve, and reinforcing sleeves 213 are formed on the outer ends of the ribs 212 , and the reinforcing sleeves 213 are inserted and sleeved on the ring platform 12 and lean against the outer wall of the ring platform 12 .

Several ring grooves 122 or knurls are formed on the outer wall of the upper ring platform 12 of the syringe 1 .

The grooves 211 on the connecting sleeve of the base 21 are arc-shaped, and the grooves 211 are evenly distributed in a ring around the central axis of the connecting sleeve. The number of grooves 211 on the connecting sleeve and the number of flanges on the ring platform 12 are 121 same number.

The inner wall of the connecting sleeve on the base 21 is formed into a conical shape, and the inclination angle of the inner wall of the connecting sleeve is equal to the inclination angle of the boss 11 on the syringe 1 .

A vertical strut 23 is formed on the top of the upper sleeve 22, and a handle 24 is formed on the top of the strut 23, and the outer wall of the upper sleeve 22 has a better finish.

Working principle: The present invention is a syringe with improved structure, specifically improving the protective cover 2 on the syringe. The improved protective cover 2 can enhance the connection strength with the syringe, so that the protective cover 2 will not be easily detached from the syringe, and the The mode of connection strength is mainly to increase the contact surface between the protective cover 2 and the syringe, such as the contact area between the boss 11 and the lower end connecting sleeve of the base 21 (the contact area between the outer wall of the connecting sleeve and the inner wall of the ring platform 12, and at the same time Corresponding grooves 211 and flanges 121 are formed on the outer wall of the connecting sleeve and the ring platform 12, which can increase the contact area), and the contact area between the outer wall of the ring platform 12 and the inner wall of the reinforcing sleeve 213; thereby the protection can be increased The friction between the cover 2 and the syringe prevents the protective cover 2 from being pulled out easily. In order to disengage the protective cover 2 from the syringe, a strut 23 and a handle 24 are provided, and it is safer to break the strut 23 when the syringe is scrapped.

Claims (5)

1. A syringe with improved structure, comprising a syringe (1), the top of the syringe (1) is formed with a conical boss (11), and the boss (11) is plugged and fixed to the injection needle (3), The outer sleeve of the injection needle (3) has a protective sleeve (2), which is characterized in that the protective sleeve (2) is composed of a conical base (21) and a cylindrical upper sleeve (22), and the lower end of the base (21) A vertically downward connecting sleeve is formed, and the connecting sleeve of the base (21) is inserted and sleeved on the boss (11) of the needle cylinder (1), and the needle cylinder (1) top surface on the outside of the boss (11) is formed with a Ring platform (12), several flanges (121) are formed on the inner wall of the ring platform (12), and grooves (211) matching the flanges (121) are formed on the outer wall of the connecting sleeve on the base (21). , the flange (121) is inserted into the groove (211) of the connecting sleeve of the base (21), the outer wall of the connecting sleeve is against the inner wall of the ring platform (12), and the connection between adjacent grooves (211) Ribs (212) are formed on the outer wall of the cover, and reinforcement sleeves (213) are formed on the outer ends of the ribs (212), and the reinforcement sleeves (213) are inserted into the ring platform (12) and lean against the ring platform (12) on the outer wall. 2. A syringe with improved structure according to claim 1, characterized in that: several ring grooves (122) are formed on the outer wall of the upper ring platform (12) of the syringe (1). 3. A syringe with an improved structure according to claim 1, characterized in that: the groove (211) on the connecting sleeve of the base (21) is arc-shaped, and the groove (211) surrounds the connecting sleeve The central axis is evenly distributed in a circular shape, and the number of grooves (211) on the connecting sleeve is the same as the number of flanges (121) on the ring platform (12). 4. A syringe with improved structure according to claim 1, characterized in that: the inner wall of the connecting sleeve on the base (21) is formed into a conical shape, and the inclination angle of the inner wall of the connecting sleeve and the convexity of the syringe (1) The inclination angles of the platforms (11) are equal. 5. A syringe with improved structure according to claim 1, characterized in that: the top of the upper sleeve (22) is formed with a vertical strut (23), and the top of the strut (23) is formed with a Handles (24).