CN204233540U - A kind of medical anti-cross infection syringe - Google Patents

Abstract

The utility model relates to a medical anti-cross-infection syringe, which comprises a syringe, a needle and a needle seat. The needle is fixedly arranged on the needle seat, and the needle barrel is connected with the needle seat through the head. The outer casing of the syringe is provided with a barrel. And the tail of the syringe is fixedly connected to the bottom of the outer barrel, an annular passage is formed between the inner wall of the outer outer barrel and the outer wall of the syringe, the mouth end of the outer outer barrel is provided with a retaining ring, and the side wall of the syringe is provided with a There is a vent hole through which the annular passage is provided with an annular piston, and the annular piston is connected with a push-pull ring sleeved on the syringe through a connecting rod. The anti-cross-infection syringe of the utility model has a simple structure, does not have a push rod in contact with fingers and a piston in contact with the liquid medicine in the traditional syringe, and directly uses the push-pull ring to move to form a negative pressure suction of the liquid medicine, which can effectively prevent damage to the syringe when operating the syringe. The cross-contamination of the liquid medicine ensures the safety of the medicine.

Description

A medical anti-cross-infection syringe

technical field

The utility model relates to the technical field of medical devices, in particular to a medical cross-infection prevention syringe.

Background technique

At present, the dosing syringe commonly used in hospitals is an ordinary syringe, which is composed of a syringe, a piston and a push rod. During operation, the medical staff pushes and pulls the piston through the push rod to move, so as to realize operations such as suctioning and mixing the liquid medicine. The process of dispensing medicine is: insert the syringe into the liquid medicine bottle to extract a small amount of medicine liquid; then pull out the syringe and insert it into the medicine powder bottle, inject the medicine liquid into the medicine powder bottle, and after the medicine powder and medicine liquid are completely dissolved, draw out the mixed solution and inject it into the medicine powder bottle. In the infusion bottle. However, in actual use, it has been found that when medical personnel perform operations such as suctioning and mixing medicinal liquid, their fingers will touch the push rod, which may cause the medicinal liquid to be contaminated, which will affect the safety of medication. And in the above-mentioned dispensing process, since the medicine bottle is a sealed structure, a certain negative pressure difference will be generated during operation, which makes the operation very laborious.

Utility model content

The purpose of this utility model is to solve the deficiencies of the above technical problems, to provide a medical anti-cross-infection syringe, the syringe directly uses the push-pull ring to move to form a negative pressure to suck the liquid medicine, which can effectively prevent the pollution of the liquid medicine when the syringe is operated, Ensure medication safety.

In order to solve the deficiencies of the above-mentioned technical problems, the utility model adopts a technical solution as follows: a medical anti-cross-infection syringe, including a syringe, a needle and a needle holder, the needle is fixedly arranged on the needle holder, the head of the syringe and the needle The seat is matched and connected, the outer casing of the syringe is provided with an outer barrel, and the tail of the syringe is fixedly connected to the bottom of the outer barrel, an annular passage is formed between the inner wall of the outer barrel and the outer wall of the syringe, and a stopper is provided at the mouth of the outer barrel. The side wall of the syringe is provided with a vent hole communicating with the annular passage, and an annular piston is arranged in the annular passage, and the annular piston is connected with a push-pull ring sleeved on the syringe through a connecting rod.

The vent hole is arranged near the tail of the syringe.

An air-permeable and water-impermeable film is arranged at the air hole.

Beneficial effect

The anti-cross-infection syringe provided by the utility model has a simple structure. There is no push rod in contact with the finger and a piston in contact with the liquid medicine in the traditional syringe. The cross-contamination of the liquid medicine ensures the safety of the medicine.

Description of drawings

Fig. 1 is the schematic structural view when the syringe of the present invention does not extract the medicinal liquid;

Fig. 2 is the structural representation when the syringe of the present invention extracts medicinal liquid;

Marks in the figure: 1. Syringe, 2. Needle, 3. Needle seat, 4. Outer sleeve, 5. Stop ring, 6. Vent hole, 7. Ring piston, 8. Push-pull ring.

Detailed ways

As shown in the figure: a medical anti-cross-infection syringe, including a syringe 1, a needle 2 and a needle holder 3, the needle 2 is fixed on the nipple of the needle holder 3, the head of the syringe 1 is connected with the needle holder 3, The syringe 1 is provided with an outer barrel 4, and the tail of the syringe 1 is fixedly connected to the bottom of the outer barrel 4, an annular passage is formed between the inner wall of the outer barrel 4 and the outer wall of the syringe 1, and the mouth of the outer barrel 4 is A retaining ring 5 is provided, and the side wall of the syringe 1 is provided with a vent hole 6 communicating with the annular channel. The vent hole 6 is set near the tail of the syringe 1, and the vent hole 6 is provided with an air-permeable and impermeable film ; An annular piston 7 is arranged in the annular channel, and the annular piston 7 is connected with the push-pull ring 8 sleeved on the syringe 1 through a connecting rod. The anti-cross-infection syringe of the utility model has a simple structure, without the push rod in contact with the finger and the piston in contact with the liquid medicine in the traditional syringe, and directly uses the push-pull ring 8 to move to form a negative pressure suction of the liquid medicine, which can effectively prevent the The cross-contamination of the liquid medicine ensures the safety of the medicine.

Claims (3)

1. A medical anti-cross-infection syringe, including a syringe (1), a needle (2) and a needle seat (3), the needle (2) is fixed on the needle seat (3), and the head of the syringe (1) Cooperate with the needle seat (3), characterized in that: the syringe (1) is covered with an outer barrel (4), and the tail of the needle barrel (1) is fixedly connected to the bottom of the outer barrel (4), and the outer barrel An annular channel is formed between the inner wall of (4) and the outer wall of the syringe (1), and a retaining ring (5) is provided at the mouth end of the outer barrel (4), and a ring (5) is provided on the side wall of the syringe (1) to connect with the annular channel. There is an open air hole (6), and an annular piston (7) is arranged in the annular channel, and the annular piston (7) is connected with a push-pull ring (8) sleeved on the syringe (1) through a connecting rod. 2. A medical cross-infection prevention syringe according to claim 1, characterized in that: the vent hole (6) is set near the tail of the syringe (1). 3. A medical anti-cross-infection syringe according to claim 2, characterized in that: the vent hole (6) is provided with an air-permeable and impermeable film.