CN205586318U - Injector - Google Patents

Abstract

The utility model provides a syringe, which belongs to the technical field of medical equipment. The syringe includes a cylinder, a piston, a syringe connecting tube, a piston rod, an annular grip and an operation panel, the piston is arranged in the cylinder, the lower end of the piston rod is connected to the piston, the upper end of the piston rod is connected to the operation panel, and the cylinder The lower end of the body is provided with a syringe connecting tube, the edge of the upper end of the cylinder is provided with an annular grip, a telescopic hose is arranged between the lower side of the operation panel and the upper side of the annular grip, and the piston rod is located in the telescopic hose. An operating ring is fixedly connected to the upper side of the operating panel, and an air hole is also arranged on the operating panel. The upper and lower ends of the air hole respectively pass through the upper and lower sides of the operating panel, and the lower end of the air hole is located between the piston rod and the telescopic hose. There is an air filter element in it. The utility model can prevent hands from contacting the piston rod and the piston of the syringe, thereby avoiding contamination of medicines in the syringe, and has the advantages of convenient use, safety and the like.

Description

a syringe

technical field

The utility model belongs to the technical field of medical equipment and relates to a syringe.

Background technique

In clinical practice, the application of syringes has been quite common. A syringe is a delivery device for injecting medicine into the human body or other intermediate medicines, so the medicine in the syringe needs to be guaranteed not to be contaminated.

However, when existing syringes are in use, there is more or less the possibility that the operator's hands will come into contact with the piston or piston rod of the syringe, and this contact is likely to bring bacteria or viruses on the operator's hands to the On the piston or piston rod of the syringe, thereby contaminating the medicine in the syringe, and ultimately affecting the health of the patient.

Contents of the invention

The purpose of this utility model is to solve the above-mentioned problems in the existing technology, and propose a syringe. This syringe can prevent the operator's hand from contacting the piston rod and piston of the syringe, thereby avoiding contamination of the medicine in the syringe. It is easy to use, Safety and other advantages.

The purpose of this utility model can be achieved through the following technical solutions: a syringe, comprising a cylinder, a piston, a syringe connecting pipe, a piston rod, an annular grip and an operating plate, the piston is arranged in the cylinder, the piston The lower end of the rod is connected to the piston, the upper end of the piston rod is connected to the operation plate, the lower end of the cylinder is provided with a syringe connection tube, the edge of the upper end of the cylinder is provided with an annular grip, the lower end of the operation plate A telescopic hose is arranged between the side surface and the upper side of the annular grip part, the piston rod is located in the telescopic hose, the upper side of the operation plate is fixedly connected with an operation ring, and the operation plate is also provided with air holes, The upper end and the lower end of the air hole pass through the upper side and the lower side of the operation panel respectively, and the lower end of the air hole is located between the piston rod and the telescopic hose, and an air filter core is arranged in the air hole.

In the above-mentioned syringe, the upper end of the air hole is provided with an annular concave shoulder, and the air filter element is arranged in the annular concave shoulder.

In the above-mentioned syringe, a piston mouth is provided on the lower side of the piston, and the shape of the piston mouth is adapted to the shape of the inner wall of the syringe connecting tube.

In the aforementioned syringe, the piston and the piston mouth are integrally constructed and made of rubber.

In the above-mentioned syringe, the barrel and the syringe connecting tube are integrally structured.

In the aforementioned syringe, the flexible hose is a plastic flexible hose or a rubber flexible hose.

Compared with the prior art, the utility model can effectively prevent the operator's hand from contacting the piston rod and the piston of the syringe, thereby avoiding contamination of medicines in the syringe, and has the advantages of convenient use and safety.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is an enlarged view of A in Fig. 1 .

In the figure, 1. Cylinder body; 2. Syringe connecting tube; 3. Piston rod; 4. Piston; 5. Piston mouth; ; 10, air hole; 10a, annular concave shoulder; 11, air filter core.

detailed description

The following are specific embodiments of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model is not limited to these embodiments.

As shown in Figures 1 to 2, a syringe includes a cylinder 1, a piston 4, a syringe connecting tube 2, a piston rod 3, an annular grip 6 and an operation plate 7, and the piston 4 is arranged in the cylinder 1 , the lower end of the piston rod 3 is connected to the piston 4, the upper end of the piston rod 3 is connected to the operation plate 7, the lower end of the cylinder 1 is provided with a syringe connecting tube 2, and the edge of the upper end of the cylinder 1 is provided with Ring-shaped grip 6, a telescopic hose 9 is arranged between the lower side of the operating panel 7 and the upper side of the annular grip 6, the piston rod 3 is located in the telescopic hose 9, the operating panel 7 An operating ring 8 is fixedly connected to the upper side, and an air hole 10 is also arranged on the operating plate 7, and the upper and lower ends of the air hole 10 pass through the upper and lower sides of the operating plate 7 respectively, and the lower end of the air hole 10 is located on the piston. Between the rod 3 and the telescopic hose 9, an air filter element 11 is arranged in the air hole 10 .

The function of the operation ring 8 is to facilitate the operation of extracting and injecting medicine, and to prevent fingers from slipping during the operation procedure.

The air filter element 11 is used as a channel for air to enter and exit the space surrounded by the cylinder body 1, the piston 4, the telescopic hose 9, the piston rod 3 and the operation panel 7, and has the function of filtering out dust, viruses and bacteria in the air, thereby reducing The probability that piston rod 3 and piston 4 will be contaminated by the environment.

The working process of the utility model is as follows: the needle is fixed on the connecting tube 2 of the syringe. When the medicine is to be extracted, the needle is inserted into the medicine, and the operator's two fingers are pressed against the upper side of the ring-shaped grip part 6, greatly Insert the thumb into the operating ring 8, the thumb drives the piston rod 3 to move upward, the telescopic hose 9 is extended, the air in the cylinder 1 is discharged to the outside through the air filter element 11, and the medicine is sucked into the cylinder under the action of the piston 4 1. When the medicine is to be injected, the needle is inserted into the person who needs to be injected or other intermediate medicines, and then two fingers are pressed against the lower side of the ring grip part 6, and the thumb is inserted into the operation ring 8, and the thumb drives the piston The rod 3 moves downward, the telescopic hose 9 shortens, the medicine in the cylinder 1 is discharged from the cylinder 1, and the outside air enters into the cylinder 1 through the air filter element 11; because the piston rod 3 is always in the cylinder 1 and stretches In the hose 9, so when the operator operates, the hand will not touch the piston rod 3 and the piston 4, so it can effectively prevent the operator's hand from contacting the piston rod 3 and the piston 4 of the syringe, thereby avoiding contamination The medicine in the syringe has the advantages of convenience and safety.

Specifically, the upper end of the air hole 10 is provided with an annular concave shoulder 10a, and the air filter core 11 is disposed in the annular concave shoulder 10a.

The annular concave shoulder 10 a functions to restrict the axial movement of the air filter core 11 along the air hole 10 , so as to facilitate the fixing of the air filter core 11 .

Specifically, a piston mouth 5 is provided on the lower side of the piston 4 , and the shape of the piston mouth 5 is adapted to the shape of the inner wall of the syringe connecting tube 2 .

The function of the piston mouth 5 is to extrude the medicine liquid in the inner hole of the syringe connecting pipe 2, reduce the residual amount of the medicine in the syringe, and improve the utilization rate of the medicine.

Specifically, the piston 4 and the piston mouth 5 are integrally constructed and made of rubber.

The piston 4 and the piston mouth 5 made of rubber have good compressibility and sealing performance, which is conducive to sucking medicine into the syringe and discharging it from the syringe.

Specifically, the cylinder body 1 and the syringe connecting pipe 2 are integrally structured to reduce installation costs.

The connecting tube 2 of the syringe has a conical structure, the inner hole of the syringe connecting tube 2 is also a conical structure, and the piston mouth 5 is also a conical structure.

Specifically, the telescopic hose 9 is a plastic telescopic hose or a rubber telescopic hose.

The barrel 1, the piston rod 3, the ring grip 6, the operation plate 7 and the syringe connecting tube 2 are all made of polyethersulfone resin.

The specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Claims (6)

1. A syringe comprising a cylinder (1), a piston (4), a syringe connecting tube (2), a piston rod (3), an annular grip (6) and an operating plate (7), the piston (4 ) is arranged in the cylinder (1), the lower end of the piston rod (3) is connected to the piston (4), the upper end of the piston rod (3) is connected to the operation plate (7), and the cylinder (1) The lower end of the cylinder body (1) is provided with a syringe connecting tube (2), and the edge of the upper end of the cylinder (1) is provided with an annular grip (6), which is characterized in that the lower side of the operating panel (7) and the annular grip A telescopic hose (9) is arranged between the upper sides of (6), the piston rod (3) is located in the telescopic hose (9), and the upper side of the operation plate (7) is fixedly connected with an operation ring (8 ), the operating panel (7) is also provided with an air hole (10), the upper and lower ends of the air hole (10) pass through the upper and lower sides of the operating panel (7) respectively, and the air hole (10) The lower end is located between the piston rod (3) and the flexible hose (9), and an air filter core (11) is arranged in the air hole (10). 2. A syringe according to claim 1, characterized in that, the upper end of the air hole (10) is provided with an annular concave shoulder (10a), and the air filter element (11) is arranged on the annular concave shoulder (10a) middle. 3. A syringe according to claim 2, characterized in that a piston mouth (5) is provided on the underside of the piston (4), and the shape of the piston mouth (5) is consistent with that of the syringe connecting pipe (2) Compatible with the shape of the inner wall. 4. A syringe according to claim 3, characterized in that the piston (4) and the piston mouth (5) are integrally constructed and made of rubber. 5. The syringe according to claim 1, characterized in that, the barrel (1) and the syringe connecting tube (2) are integrally structured. 6. A syringe according to claim 1, characterized in that the telescopic hose (9) is a plastic telescopic hose or a rubber telescopic hose.