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Pneumatic needleless 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., achieve the effect of shortening the moving stroke, reducing the processing accuracy requirements, and improving the service life

Active Publication Date: 2014-08-06
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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  • Pneumatic needleless injector
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  • Pneumatic needleless injector

Examples

Experimental program
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Effect test

Embodiment Construction

[0035] The technical solution of the present invention will be described in detail below with reference to the drawings and embodiments.

[0036] figure 1 It is a complete picture of the appearance of the syringe. The appearance is a submachine gun, including trigger 21, connecting rod 22, first exhaust channel 55, second exhaust channel 56, base 6, adjusting knob 331, sleeve 11, rotating shaft 211, needle Cylinder positioning seat 46, compression nut 45, syringe 41, syringe connector 43, nozzle nut 427, disposable nozzle 425, and medicine storage device 7. The trigger 21 is hinged with the base 6 through a rotating shaft 211 to form a rotational relationship, and the trigger 21 is hinged with a connecting rod 22 through a cylindrical pin to form a rotational relationship.

[0037] Figure 2a It is a structural cross-sectional view of the syringe to be triggered. The air inlet 61 is located at the rear end of the base 6, and the inner wall of the air inlet 61 is threaded. When in...

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PUM

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Abstract

The invention discloses a pneumatic needleless injector which comprises a base, an injection component, an air way component, a manual trigger component, an injection dosage regulating component and a needle cylinder component. An impacting piston of the injection component pushes liquid medicine in the needle cylinder component to achieve the purpose of injection. High-pressure air is led into the air way component to push the piston of the injection component to move. The manual trigger component makes contact with a valve element of the air way component through a trigger and a connecting rod to control opening and closing of the air way component. A threaded rod and a limiting stop block of the injection dosage regulating component are connected through threads, and the threaded rod is rotated to enable the limiting stop block to move in the axial direction, so that the initial position of the impacting piston of the injection component is limited, and the purpose of regulating injection dosage is achieved. The needle cylinder component is sealed through a plunger and a one-way valve structure of a nozzle, and is used for guiding liquid medicine in and accommodating 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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IPC IPC(8): A61M5/303A61M5/31
Inventor 王兴松王超然陈鑫
Owner JIANGXI SANXIN MEDTEC
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