A Pneumatic Needle-Free Injector

A needle-free syringe and pneumatic technology, applied in the field of medical devices, can solve the problems of obvious pain, disease transmission, skin damage, etc., and achieve the effect of shortening the moving stroke, reducing the processing accuracy requirements, and improving the service life.

Active Publication Date: 2016-03-30
JIANGXI SANXIN MEDTEC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional syringe is to insert a steel needle into the human skin for injection, which is easy to cause damage to the skin, resulting in obvious pain, and even the risk of needle breakage
Also, if the needles are not clean enough, it can also cause the spread of disease

Method used

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  • A Pneumatic Needle-Free Injector
  • A Pneumatic Needle-Free Injector
  • A Pneumatic Needle-Free Injector

Examples

Experimental program
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Embodiment Construction

[0035] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0036] figure 1 It is the general picture of the appearance of the syringe. Barrel positioning seat 46, compression nut 45, syringe 41, syringe connector 43, nozzle nut 427, disposable nozzle 425, medicine storage device 7. The trigger 21 is hinged to the base 6 through the rotating shaft 211 to form a rotational relationship, and the trigger 21 is hinged to the connecting rod 22 to form a rotational relationship through a cylindrical pin.

[0037] Figure 2aIt is a cross-sectional view of the structure of the syringe when it is ready to be triggered. The air intake hole 61 is positioned at the rear end of the base 6, and there are threads on the inner wall of the air intake hole 61. During use, a common air pipe joint is connected to the thread of the air intake hole 61, and the other end of the air pipe joint is connec...

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PUM

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Abstract

The invention discloses a pneumatic needle-free injector, which comprises a base, an injection assembly, an air circuit assembly, a manual trigger assembly, an injection dosage adjustment assembly and a syringe assembly. The impact piston in the injection assembly pushes the liquid medicine in the syringe assembly to achieve the purpose of injection; the air circuit assembly introduces high-pressure gas to push the piston in the injection assembly; the manual trigger assembly passes a trigger and connecting rod and the valve core of the air circuit assembly Contact to control the opening and closing of the air circuit component; the threaded rod and the limit stopper in the injection dose adjustment component are threadedly connected, and the limit stopper is moved axially by rotating the threaded rod to limit the initial position of the impact piston in the injection component , to achieve the purpose of dose adjustment; the syringe assembly forms a seal through the plunger and the one-way valve structure of the nozzle, which is used to introduce and contain the liquid medicine.

Description

technical field [0001] The invention belongs to the field of medical devices, and in particular relates to a needle-free injector. Background technique [0002] Traditional syringes use steel needles to pierce human skin for injection, which can easily damage the skin, cause obvious pain, and even cause the risk of needle breakage. And, if the needles are not clean enough, it can also cause the spread of disease. Compared with traditional injection, needle-free injection has many advantages: it has little stimulation to nerve endings and no obvious pain; since there is no needle, disease transmission caused by unclean needle is eliminated; drug diffusion after injection Uniform, easy to absorb. In addition, since the needle-free syringe can be used continuously, compared with the traditional syringe, the treatment of medical waste is reduced, the environment is purified, and the cost of waste disposal is also reduced. According to the survey, 20% of minors and 8.1% of adu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M5/303A61M5/31
Inventor 王兴松王超然陈鑫
Owner JIANGXI SANXIN MEDTEC
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