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Self destroyed low resistance injector

A low-resistance syringe, self-destructing technology, applied in the directions of syringes, hypodermic injection devices, infusion sets, etc., can solve the problems of high resistance, complex sealing head structure and high production cost

Inactive Publication Date: 2006-06-14
李福根
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Where the syringes are currently in use (except for surgical anesthesia kits), inexpensive plastic disposable syringes can be used instead of glass syringes, and special anesthesia in operations In the bag, old-fashioned glass syringes are used without exception. The reason is that glass syringes have low resistance and are suitable for self-priming injections that rely only on the negative pressure of human blood pressure contraction. Fragile, once broken, the entire anesthesia bag is useless, and the production cost is high
[0003]Patent ZL200420020258X discloses a utility model technical solution of a low-resistance syringe. Not low
And it is easy to leak the liquid medicine, the liquid is not drained, and the practicability of replacing the glass syringe is not the best
[0004]The contact surface between most of the sealing ring of the general syringe and the inside of the barrel is convex and round, and the contact surface between the convex top and the inside is relatively large, which is surface-to-surface contact , so the resistance is also greater

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 2

[0016] Specific embodiment 2 refers to Figure 1 ; When used for general manual injection (inhalation of liquid medicine in the same example as above) hand pressure acts on the end of the push rod (2), and the liquid medicine produces two-way pressure, one is the reaction force towards the piston and the injection force of the liquid medicine towards the needle , when the reaction force cannot pass through the sealing ring (3-1), the liquid medicine will be injected into the human body with the injection force, and when the manual force is suddenly increased, the sealing ring (3-2) will increase the horizontal sealing ring ( 3-1) The tension ( Figure four a) At the same time, it will shrink the upper part of the sealing ring (3-1) to contact the cylinder body, and the force of the sealing ring (3-2) will maintain a basic balance with the overall pressure of the liquid medicine. Therefore, when the hand pressure is increased, it will not make the Sealing ring (3-1) leaks, and ...

specific Embodiment 3

[0017] Specific embodiment 3 refers to Figure four ; when pressing Figure four (a) When the product of the present invention is injected, the contact surface of (7) is line-side contact, and the contact surface resistance is small. Figure four (b) When injecting with an ordinary syringe, the contact surface of (8) is surface-to-face contact, and the contact surface is relatively large and the resistance is much greater. So the main structural component piston of the present invention---has significant improvement and creation to traditional piston.

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Abstract

A self-destroying low-resistance injector is characterized by that its piston is based on the rubber bowl principle of inflator and the contact between piston and injector tube is a line-surface contact, resulting in very low resistance and high sealing performance.

Description

[0001] Technical Field The present invention belongs to the technical field of medical device production, and is an upgraded product of ordinary syringes, especially the low-resistance syringes for anesthesia puncture kits, the last bastion to replace glass syringes. technical background [0002] Where the syringes that are currently in use (except for the surgical anesthesia kit) can be used instead of glass syringes with inexpensive plastic disposable syringes, and in the special anesthesia kits for operations, the old-fashioned glass syringes are used without exception. The reason is that the resistance of the glass syringe is low, which is suitable for self-priming injection only by the negative pressure of the human blood pressure contraction, but its disadvantage is that it is fragile during transportation and handling. Once broken, the entire anesthesia package is useless, and the production cost higher. [0003] Patent ZL200420020258X discloses a prac...

Claims

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Application Information

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IPC IPC(8): A61M5/178A61M5/315A61M5/50
Inventor 李福根
Owner 李福根
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