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Thrombosis prevention device of venous indwelling needle

A venous indwelling needle and anti-thrombosis technology, which is applied to needles, devices introduced into the body, etc., can solve the problems of unreliable performance, difficult to apply widely, complicated process, etc., and achieve the effects of easy implementation, convenient operation and simple structure.

Active Publication Date: 2012-06-06
浙江汉禾医疗器械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to solve these problems, recent patents and products use anticoagulant-made needle sealing solution or positive pressure method to reduce and delay the formation of thrombus, but cannot completely prevent the formation of thrombus after suspending infusion.
There is a kind of one-way valve principle to prevent blood backflow and anti-thrombosis. Although it has some effects, the process is complex and the performance is unreliable, so it is difficult to be widely used.

Method used

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  • Thrombosis prevention device of venous indwelling needle
  • Thrombosis prevention device of venous indwelling needle

Examples

Experimental program
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Effect test

Embodiment Construction

[0009] Combine below figure 1 , figure 2 Describe in detail the details and working conditions of specific devices proposed according to the present invention.

[0010] The antithrombotic device for intravenous indwelling needles includes a main body sleeve seat (1), a closing plug (8) and a piston (2) inside the main body, the piston is fixed at the end of the push tube (3), and the needle core (4) is in the Pass through the piston (2) in the push tube (3).

[0011] Taking the figure as an example, the needle core (4) is pulled out after the venipuncture is completed during the operation, and the cannula (5) can be left in the vein for routine infusion. The medicinal liquid flows into the sleeve socket (1) from the small catheter (7), and the closure plug (8) prevents the medicinal liquid from flowing backward and can only flow into the blood vessel through the sleeve sleeve (5) forward. When the infusion is suspended and the tube is sealed, the plunger (2) is pushed to t...

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Abstract

The invention relates to the field of medical appliances, and in particular relates to a thrombosis prevention device of a venous indwelling needle. The thrombosis prevention device is composed of a sleeve seat, a sleeve, a piston, a pushing pipe and a needle core and is characterized in that the piston is arranged in the sleeve seat, the piston is fixed at the end of the pushing pipe, and the needle core is located in the pushing pipe and is sleeved in the sleeve after penetrating through the piston. Transfusion can be carried out after venous puncture and needle core pulling-out according to the normal operation. When the transfusion is paused and the pipe is sealed, the piston is pushed forward and seals the water inflow hole of the sleeve. When the transfusion is continued, the piston is pulled backward. The thrombosis prevention device provided by the invention is simple to operate, and has double thrombosis prevention functions of positive pressure and blood backflow sealing and preventing.

Description

technical field [0001] The invention relates to the category of medical equipment, and relates to an antithrombosis device for a venous indwelling needle. Background technique [0002] Existing intravenous infusion needles are easy to puncture blood vessels during infusion, and must be replaced every day. The invention and application of the venous indwelling needle overcomes these shortcomings. After the venipuncture is completed, the needle core needs to be pulled out and the cannula is left, so the blood vessel will not be damaged, and it can be left in the blood vessel for continuous use for several days. [0003] However, once the infusion of the existing venous indwelling needle is suspended, blood return phenomenon will occur, and thrombus will be formed at the end of the cannula to cause blockage. Even if pressurized and washed away, the thrombus will block the capillaries, resulting in vasculitis. In order to solve these problems, the patents and products in recen...

Claims

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Application Information

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IPC IPC(8): A61M5/158
Inventor 谢世庚
Owner 浙江汉禾医疗器械有限公司
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