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Improved type safe self-destroyed syringe

A syringe and an improved technology, applied in the field of medical devices, can solve the problems of medical accidents, insufficient needle tip anti-retraction force, etc., and achieve the effects of small discomfort, large force, and small occlusal force.

Active Publication Date: 2009-07-08
WUXI YUSHOU MEDICAL APPLIANCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing safety syringes are easy to retract the needle point into the syringe jacket due to insufficient anti-retraction force during clinical needle injection, and the liquid medicine leaks everywhere on the patient's body, resulting in medical accidents

Method used

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  • Improved type safe self-destroyed syringe
  • Improved type safe self-destroyed syringe

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Experimental program
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Embodiment Construction

[0012] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0013] As shown in the figure: there is a sealing plug 7 that is sealed and slidably connected with it in the outer casing 1, and a movable needle seat assembly 2 is provided in the outer casing 1 that is sealed and plugged in with it, and the movable needle seat assembly 2 is connected with the hook 8 by interference fit. Together, the movable needle base assembly 2 is provided with a needle mounting part 3, and the cavity between the opposite ends of the movable needle base assembly 2 and the sealing plug 7 forms an injection fluid storage cavity 25, and the movable needle base assembly 2 and the needle mounting part 3. The interior communicates with the injection liquid storage cavity 25, and the hook 8 and the jacket 1 are provided with a raised portion 12 and a card platform 13 that overlap and cooperate with each other. The lower part of the hook 8 extends...

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Abstract

The invention relates to a secure self-destructing syringe. A sealing piston which is sealed with an outer casing and is connected with the outer casing in a sliding way is arranged in the outer casing. A movable needle base which is grafted with the outer casing in a sealing way is arranged in the outer casing. A needle installation part is arranged on the movable needle base. An empty cavity between the opposite end parts of the movable needle base and the sealing piston forms an infusion liquid storing cavity body. The movable needle base and the inside of the needle installation part are communicated with the injection liquid storing cavity body. A heave part and a lock base which are mutually matched in a lapping way are arranged on the movable needle base and the outer casing. A hook extending into the injection liquid storing cavity body is arranged on the movable needle base. A tightening inclined plane of the hook is arranged on the sealing piston. A deflection hole is arranged under the tightening inclined plane. An axis of the deflection hole and an axis of the outer casing are arranged in a deflection way. A buckling cavity for integrating the sealing piston with the hook is arranged on the sealing piston. The diameter of the outer casing on one side of the hook is larger than the external diameter of the movable needle base. The outer casing on the other side of the hook keeps the movable needle base in the outer casing. When in use, the secure self-destructing syringe can avoid the overlarge power of needle withdrawing and the over-small power of needle retracting and totally realizes the secure self-destruction.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an improved safe self-destruction syringe. Background technique [0002] At present, there are many kinds of self-destructing syringes, and there are also many safe syringes, but there are not many syringes that can both self-destruct and achieve safe effects. The structure of general safety syringes is mainly in the form of retracting the needle. This structure has technically difficult problems, that is, the force to prevent the needle from being withdrawn must be greater than the force of artificially (automatically) retracting the needle. . If the force of positioning (to prevent needle withdrawal) is set too high, the needle can be prevented from withdrawing, but the force of retracting the needle will also increase, and it will be larger, which will eventually lead to safety hazards; if the positioning (prevention of needle withdrawal) is set The force is small, b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/50A61M5/32
Inventor 周令刚
Owner WUXI YUSHOU MEDICAL APPLIANCES
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