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Quantitative needleless injector

A needle-free syringe and syringe technology, which is applied in the field of medical equipment to achieve the effects of good stimulation, reasonable structure design and excellent effect

Pending Publication Date: 2020-11-10
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 overcome the deficiencies of the prior art, the present invention provides a device with reasonable structural design, adopts pneumatic mode, and has stable excitation at the same time. Quantitative needle-free syringe

Method used

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Examples

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Embodiment Construction

[0016] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0017] Such as Figure 1 to Figure 4 The shown quantitative needle-free syringe is the best embodiment of the present invention, including a drug core assembly, a handle cover 1 and a stepping piston assembly arranged in the handle cover 1 .

[0018] The drug core assembly is arranged at the front end of the handle cover 1 , and the drug core assembly includes a drug core cover 2 and a syringe push rod 3 , and the front end of the syringe push rod 3 is inserted into the drug core cover 2 .

[0019] The rear end of the syringe push rod 3 is provided with an impact rod 4, the stepping piston assembly is arranged at the rear end of the impact rod 4, and the step...

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Abstract

The invention provides a quantitative needleless injector. The quantitative needleless injector comprises a medicine core assembly, a handle sleeve and a stepping piston assembly, wherein an impact rod is arranged on the rear end face of an injector push rod, and the stepping piston assembly is arranged at the rear end of the impact rod and pushes the impact rod to move forwards; a non-return locking combination for locking and unlocking the impact rod and the handle sleeve is arranged between the impact rod and the inner wall of the handle sleeve, and the stepping piston assembly comprises anair cylinder outer sleeve, a pneumatic piston and a main impact rod; and a magnet and a magnet seat are fixed at the rear end of the pneumatic piston. The quantitative needleless injector is reasonable in structural design, the impact rod can be effectively stopped and locked, stepping excitation of the impact rod is achieved through the stepping piston assembly inside, excitation is good, the liquid medicine pressure is stable, and the quantitative injection effect is excellent.

Description

technical field [0001] The invention relates to the technical field of medical equipment, especially syringes, in particular to a quantitative needle-free syringe. Background technique [0002] Needle-free injection, also known as jet injection, uses the instantaneous high pressure generated by the power source to make the drug in the syringe pass through the nozzle to form a high-speed, high-pressure jet flow, so that the drug penetrates the outer layer of the skin to the subcutaneous, intradermal and other tissue layers to release the drug effect. Medical device. At present, the existing needle-free injectors are usually controlled by hydraulic pressure, and at the same time, they cannot effectively realize the fractional and quantitative injection of a dose of medicinal liquid. During the injection process, there is also poor locking of the impact rod, and insufficient pressure of the liquid medicine occurs, which affects the normal operation of needle-free injection. I...

Claims

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Application Information

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IPC IPC(8): A61M5/307A61M5/31
CPCA61M5/30A61M5/31
Inventor 支前锋徐浩宇张春莉张亚德李海飞刘鑫刘靖
Owner 江苏丞宇米特医疗科技有限公司
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