Safety cylinder of injector

A technology for safe injection and syringes, applied in the direction of syringes, hypodermic injection devices, infusion sets, etc., can solve the problems of danger, retraction and entry into the cylinder body 60, and insufficient tightness to avoid protruding or shrinking input effect

Inactive Publication Date: 2006-11-15
汪贤宗
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] But the design of the above-mentioned commonly used safety injection syringe, although its conception is good, but there are some shortcomings in use, mainly because there is only a single anti-leakage ring 71 between the plunger 70 and the cylinder body 60. In this design, when the needle 73 at the other end of the plunger 70 is inserted into hard skin or blood vessels, the needle 73 and the plunger 70 will often retreat and enter the barrel 60. or before injecting the liquid medicine, when the pushing strength of the medical staff is too large or too fast when testing the liquid medicine, the plunger 70 will be pushed by the hydraulic pressure and drive the needle 7

Method used

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Example Embodiment

[0026] First see figure 1 , Figure 2 and image 3 Shown is a three-dimensional appearance view, a three-dimensional exploded schematic view and a cross-sectional schematic view of a preferred embodiment of the present invention. The present invention is mainly provided with a hollow and slender cylinder 20, the front end of the cylinder 20 can be inserted into a plunger 30 Set, and make the cylinder 20 relative to the peripheral side of the end where the plunger 30 can be embedded, a perforation 21 is penetrated (as shown in Figure 2), and the plunger 30 is embedded in the inner peripheral edge of the cylinder 20 relative to The position of the perforation 21 is provided with a positioning hole 31 equivalent to the size of the perforation, and the outer side of the perforation 21 of the cylinder 20 is provided with a bolt positioning member with a connecting unit 10A that is sleeved with the front end 20A of the cylinder 20 10. The positioning member 10 may be a positioning bolt ...

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Abstract

A high-safety injector features that a locator at the front end of injecting tube is sleeved by a connection unit and the connection unit is embedded between injecting tube and plunger. As a result, the needle can not be moved by plunger on injecting.

Description

technical field [0001] The invention relates to a safety injection syringe, in particular to a disposable safety injection syringe which is more convenient and safe to use. Background technique [0002] According to the current safe injection syringe products, such as Figure 8 to Figure 10 As shown, it is mainly provided with a hollow and elongated cylinder 60, the front end of the cylinder 60 can be embedded with a plunger 70, and the periphery of the plunger 70 is provided with a leak-proof ring 71, so that the cylinder When the plug 70 is embedded in the front end of the cylinder 60, it can achieve watertight sealing, and the plunger 70 is embedded in the end surface of the cylinder 60, protruding toward the inside of the cylinder 60 to form an inverted cone-shaped clamping post 72, and The front end of the plunger 70 can be socketed with a needle 73; [0003] And the rear end of the cylindrical body 60 can be used to embed a push rod 80 with a breaking groove 81 in the...

Claims

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Application Information

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IPC IPC(8): A61M5/315A61M5/31
Inventor 汪贤宗
Owner 汪贤宗
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