CN201290957Y - Syringe - Google Patents

Abstract

The utility model relates to a syringe which comprises an injection tube, a piston and a piston rod, wherein, a fixed magnet with a through hole in the middle is fixed on the front end of the injection tube; a movable magnet which is homopolar with the fixed magnet is fixed on the piston rod which is close to the rear end of the piston; and a portable circular lug on the rear end of the injection tube is provided with a semi-circular limit snap gauge. The syringe has the advantages that during use, the piston is pushed to the bottom end of the injection tube; a needle tip is punctured into a medicine bottle or a drug dispensing vessel; the use is convenient; because the fixed magnet and the movable magnet are homopolar, the movable magnet is separated under the repulsive force of the fixed magnet, and drives the piston and the piston rod to move externally, to produce negative pressure in the injection tube, so as to suck liquid medicine into the injection tube; and the syringe has automatic medicine sucking function, saves time and labor, and reduces the labor intensity of the medical staff.

Description

A kind of syringe

Technical field:

This utility model relates to technical field of medical instruments, particularly a kind of syringe with self-suction function.

Background technology:

At present, in medical and health industry, the nursing staff is when injecting or making up a prescription, need draw medicine with syringe, for protecting from infection, the nursing staff will be on the other hand fixing medicine bottle, a hand-held syringe, the pulling piston is drawn medicine, more for a long time, this operational approach can make the aching and limp pain of nursing staff's arm, troublesome poeration at medicine, and waste time and energy, increased nursing staff's working strength.

Summary of the invention:

The purpose of this utility model is to overcome the shortcoming that exists in the prior art, provide a kind of simple in structure, easy to use, can inhale medicine and time saving and energy saving syringe automatically.

To achieve these goals, this utility model provides a kind of syringe, comprise injection tube, piston and piston rod, wherein, the fixed magnet piece that has through hole in the middle of described injection tube Inner Front End is set with, be set with the movable magnet piece with described fixed magnet piece homopolarity on the described piston rod near described piston rear end, the Handheld Division circular protrusions of described injection tube rear end is provided with semicircle spacing clamp.

The outstanding advantage of this utility model is: simple in structure, during use, piston is pushed into the injection tube bottom, syringe needle thrust medicine bottle or the vessel that make up a prescription in get final product, easy to use because fixed magnet piece and movable magnet piece belong to homopolarity, so the movable magnet piece can be under the repulsion of fixed magnet piece away from, driving piston and piston rod simultaneously outwards moves, make to produce negative pressure in the injection tube, thereby medicinal liquid is sucked in the injection tube, have automatic suction medicine function, time saving and energy saving, reduce medical workers; The Handheld Division circular protrusions of injection tube rear end is provided with semicircle spacing clamp, can drive piston and the outwards mobile distance of piston rod by the restraint magnet piece, thereby prevent that piston breaks away from away, causes liquid waste in injection tube.

Description of drawings:

Fig. 1 is the overall structure front view of this utility model embodiment.

Fig. 2 is the side view of Fig. 1.

The specific embodiment:

Its design agents mechanism comprised injection tube 1, fixed magnet piece 2, piston 3, movable magnet piece 4, piston rod 5 and spacing clamp 6 when embodiment of the present utility model implemented.Wherein, the fixed magnet piece 2 that has through hole in the middle of injection tube 1 Inner Front End is set with, be set with the movable magnet piece 4 with fixed magnet piece 2 homopolarities on the piston rod 5 near piston 3 rear ends, the Handheld Division circular protrusions of injection tube 1 rear end is provided with semicircle spacing clamp 6.

Syringe of the present utility model, during use, piston 3 is pushed into injection tube 1 bottom, the syringe needle that is arranged on injection tube 1 front end thrust medicine bottle or the vessel that make up a prescription in get final product, easy to use, because fixed magnet piece 2 and movable magnet piece 4 belong to homopolarity, so movable magnet piece 4 can be under the repulsion of fixed magnet piece 2 away from, driving piston 3 and piston rod 5 simultaneously outwards moves, make to produce negative pressure in the injection tube 1, thereby medicinal liquid is sucked in the injection tube 1, have automatic suction medicine function, time saving and energy saving, reduce medical workers; The Handheld Division circular protrusions of injection tube 1 rear end is provided with semicircle spacing clamp 6, can drive piston 3 and the outwards mobile distance of piston rod 5 by restraint magnet piece 4, thereby prevent that piston 3 breaks away from away, causes liquid waste in injection tube 1.

Claims (1)

1, a kind of syringe, comprise injection tube, piston and piston rod, it is characterized in that, the fixed magnet piece that has through hole in the middle of described injection tube Inner Front End is set with, be set with the movable magnet piece with described fixed magnet piece homopolarity on the described piston rod near described piston rear end, the Handheld Division circular protrusions of described injection tube rear end is provided with semicircle spacing clamp.

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