CN201880134U - Sterile injector - Google Patents

Abstract

The utility model discloses a medical appliance, in particular to a sterile injector. The sterile injector adopts the scheme that an injection needle joint is arranged at the lower end of an injection tube, a rodless piston is arranged in the injection tube, the upper end of the injection tube is connected with a pneumatic tube through a gas tube, and a piston and a piston rod are arranged in the pneumatic tube. The sterile injector can ensure the sterile environment in the injection tube, avoids cross infection, and is simple to operate; and the use cost of the injector is reduced.

Description

A kind of asepsis injector

Technical field

This utility model relates to a kind of medical instruments, especially is a kind of asepsis injector.

Background technology

Syringe is the most common a kind of medical instruments in medical treatment, and its effect is to inject medicinal liquid to treat in patient's body.Though the syringe that uses at present is disposable syringe, greatly reduce the probability of cross infection, but still be difficult to guarantee that no pathogenic bacteria exists in the syringe, trace it to its cause main because the inwall of syringe is in communication with the outside, piston may take the pathogenic bacteria that is attached on the tube wall in the medicinal liquid in moving process, and enter in patient's body, cause cross infection.

The utility model content

For overcoming the deficiencies in the prior art, it is a kind of easy to use that this utility model provides, and can avoid pathogenic bacteria to enter the asepsis injector of medicinal liquid.

For realizing above-mentioned technical purpose, this utility model is achieved through the following technical solutions: a kind of asepsis injector, comprise a syringe, the syringe lower end is provided with the entry needle joint, it is characterized in that: be provided with rodless piston in the syringe, the upper end of syringe is connected with airway by union joint, and the airway other end connects pneumatic tube, is provided with piston and piston rod in the pneumatic tube.

The beneficial effects of the utility model are: promote rodless piston by air pressure and move up and down, syringe is not in communication with the outside, guaranteed the gnotobasis in the syringe, effectively avoid cross infection, can partly manufacture syringe disposable for reducing use cost, pneumatic tube does not contact with medicinal liquid and can be recycled, because syringe is compared less with existing disposable syringe, also can save material, reduce the syringe use cost, this utility model is easy to operate, has certain dissemination.

Description of drawings

Fig. 1 is this utility model structural representation.

Among Fig. 1,1, piston rod, 2, pneumatic tube, 3, piston, 4, airway, 5, union joint, 6, rodless piston, 7, syringe, 8, the entry needle joint.

The specific embodiment

Referring to accompanying drawing, a kind of asepsis injector, comprise a syringe 7, syringe 7 lower ends are provided with entry needle joint 8, be provided with rodless piston 6 in the syringe 7, the upper end of syringe 7 is connected with airway 4 by union joint 5, and airway 4 other ends connect pneumatic tube 2, are provided with piston 3 and piston rod 1 in the pneumatic tube 2.

Claims (1)

1. an asepsis injector comprises a syringe, and the syringe lower end is provided with the entry needle joint, it is characterized in that: be provided with rodless piston in the syringe, the upper end of syringe is connected with airway by union joint, and the airway other end connects pneumatic tube, is provided with piston and piston rod in the pneumatic tube.