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Reset component of injector

A technology of syringes and components, applied in the field of syringes, can solve the problems of backwardness and the inability of multiple quantitative injections of medicinal liquids

Pending Publication Date: 2019-08-16
江苏丞宇米特医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: in order to solve the problem that the piston of the needleless syringe in the prior art cannot perform quantitative stroke retreat after one injection, resulting in the inability to perform multiple quantitative injections of the medicinal liquid in the same syringe , now provides a syringe reset assembly

Method used

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  • Reset component of injector
  • Reset component of injector
  • Reset component of injector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as Figure 1-5 As shown, a syringe reset assembly, the reset assembly includes:

[0029] Reset mandrel 1, used to push the plunger of the syringe to reset;

[0030] The reset cylinder 2 has an inner cavity 2-1 for accommodating fluid medium, and the reset core rod 1 is slidably arranged at the upper end of the inner cavity 2-1;

[0031] The reset piston 3 is inserted at the lower end of the inner cavity 2-1, and the inner cavity 2-1 is slidingly connected with the reset piston 3;

[0032] And the base 4, the reset piston 3 is fixed on the base 4, the inner cavity 2-1 is located between the reset core rod 1 and the reset piston 3 and is filled with a fluid medium, and the inner cavity 2-1 has a The force surface 2-13 for the fluid medium to push the reset cylinder 2 to move upward along the reset piston 3, when the reset mandrel 1 pushes the fluid medium downward, the fluid medium is pushed from the force surface 2-13 of the inner cavity 2-1 The reset cylinder 2 ...

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Abstract

The invention relates to the technical field of an injector, in particular to a reset component of the injector. The reset component comprises a reset core rod, a reset cylinder, a reset piston and abase, the reset cylinder is provided with an inner cavity used for accommodating a fluid medium, the reset piston is fixed on the base, and a space between the reset core rod and the reset piston is filled with the fluid medium. When the piston of the injector needs to be reset, the reset core rod is pushed downwards firstly to enable the fluid medium in the inner cavity to push the reset cylinderto move upwards, then the reset core rod is inserted into the injector and enabled to contact with the piston, the injector is relatively fixed to the reset component, and finally by means of pressing down the reset cylinder, the piston can be jacked up by the reset core rod and is reset. The reset component of the injector has the advantages that the piston can be pushed back and kept a certaindistance from a push rod after every time of injection, so that the piston can strike the push rod to complete injection conveniently, and multiple times of quantitative injections of liquid medicinein a same injection syringe can be realized.

Description

technical field [0001] The invention relates to the technical field of syringes, in particular to a reset assembly for syringes. Background technique [0002] Existing pen-type needle-free injectors usually include a piston assembly and a drug core assembly. When in use, the piston in the piston assembly is pushed by the fluid medium to hit the push rod in the drug core assembly, and the drug solution in the syringe is released from the syringe by the push rod. The injection hole is fired and ejected to form a high-pressure jet for injection. During the quantitative injection of the syringe, the patient needs to reset the syringe after each quantitative injection with the syringe for the next quantitative injection. Currently, the syringe on the market A separate tool for reset has not yet appeared and the present invention aims to solve this problem. Contents of the invention [0003] The technical problem to be solved by the present invention is: in order to solve the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/31A61M5/303
CPCA61M5/31A61M5/30
Inventor 支前锋孙溢张春莉周斌洪洁
Owner 江苏丞宇米特医疗科技有限公司