Manpower-driven energy storage needleless syringe

A needle-free syringe, manpower-driven technology, applied in the directions of syringes, hypodermic injection devices, injectors by jet action, etc., can solve the problems of inconvenient reset operation, incompatibility, etc., and achieve the effects of shortening the empty stroke, simple structure, and volume reduction.

Active Publication Date: 2014-08-13
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, human-driven needle-free injectors generally use the principle of spring energy storage and instant firing to work, such as Chinese patent No. ZL201320568118.5, patent The structure named "needle-free syringe" has the advantages of simple structure and convenient injection operation; its main disadvantage is that the triggering injection device of the syringe is separated from the spring reset energy storage device, and the reset operation is extremely inconvenient and unsuitable. When continuous rapid injection is required

Method used

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  • Manpower-driven energy storage needleless syringe
  • Manpower-driven energy storage needleless syringe
  • Manpower-driven energy storage needleless syringe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] see figure 1 , figure 2 The shown needle-free syringe includes a cylinder 1 with an inner cavity, a front end cover 2 fixed on the front end of the cylinder 1, a needle-free ampoule assembly 5 mounted on the front end cover 2, and a needle-free ampoule assembly 5 mounted on the cylinder movably in the front-back direction. The impact member 3 in the inner cavity of the cylinder 1, the human-driven air supply device 6 for supplying compressed air, the impact member 3 forms a closed chamber 11 between the cylinder 1 and the rear of the cylinder 1, and is manually The driving air supply device 6 fills the chamber 11 with compressed air, which can drive the impact member 3 to move forward in the inner chamber of the cylinder 1 .

[0028] The needle-free ampoule assembly 5 is detachably installed on the front end cover 2, so that it can be easily disassembled and replaced after an injection is completed. The needle-free ampoule assembly 5 includes a syringe with a l...

Embodiment 2

[0039] join image 3 The needle-free injector shown differs from Embodiment 1 mainly in the setting of the human-driven air supply device 6 . In this embodiment, the body 61 of the human-driven air supply device 6 is set separately from the cylinder 1, and the second chamber 65 on the human-driven air supply device 6 is connected to the chamber 11 of the cylinder 1 through the intake pipeline 8 In addition, in the air compression mechanism 7, the operating handle 73 in Embodiment 1 is replaced by an operating pedal 74 that is rotatably arranged on the body 61 at one end, so that when operating, the operator only needs to step on the operating pedal 74 with his feet That is to say, the cavity 11 of the cylinder 1 is filled with gas, so that the impact member 3 is charged, and the operation is more labor-saving.

[0040] In addition, in this embodiment, since the intake pipeline 8 is connected, the lumen of the intake pipeline 8 can form a chamber for storing compressed air...

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Abstract

The invention discloses a manpower-driven energy storage needleless syringe. The needleless syringe comprises a cylinder barrel with an inner cavity, a front end cover fixedly arranged at the front end of the cylinder barrel, a needleless ampoule assembly arranged on the front end cover and an impact part movably arranged in the cylinder barrel along the front and back direction; a closed chamber is formed between the impact part and the rear part of the cylinder barrel in the cylinder barrel; the needleless syringe also comprises a manpower-driven air supplier for charging compressed air into the chamber; the needleless ampoule assembly at least comprises a piston rod capable of moving along the front and back direction; the cylinder barrel is provided with a control mechanism for switching work states of the impact part. The impact is realized in a mode of storing certain potential energy for the impact part and then releasing the potential energy, so the piston rod of the needleless ampoule assembly is driven to move to realize the injection of medicine liquid; the initial acceleration speed of the impact part is larger during the impacting, so the idle stroke is greatly shortened, and the size of the needleless syringe is greatly reduced.

Description

[0001] technical field [0002] The invention relates to a human-driven energy-storage needle-free injector. [0003] Background technique [0004] Needle-free injection technology is to inject liquid medicine directly into the body tissues in the form of ultra-fine, high-speed, and straight-line high-pressure jets without the use of needles, which solves a series of problems caused by traditional injections caused by needles piercing the body. , such as: pain, bleeding, infection, tissue damage, psychological stress of patients, etc.; at the same time, the distribution of drugs injected without needles in the tissue is more diffuse, which is conducive to the absorption of drugs, and the skin is not easy to harden after long-term injection. Therefore, needle-free injection technology has broad application prospects, especially for children's vaccination and diabetic patients. [0005] In the prior art, human-driven needle-free injectors generally use the principle of spr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/303A61M5/31
CPCA61M5/30
Inventor 孙万平王明娣王传洋窦云霞
Owner SUZHOU UNIV
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