Infusion indwelling needle

A technology of indwelling needles and needle tubes, which is applied to needles, instruments introduced into the body, valves, etc., can solve problems such as coagulation and thrombus formation, and achieve the effect of reducing the space of the infusion passage, facilitating the operation, and avoiding the return of blood from the operation.

Inactive Publication Date: 2021-10-22
常熟市精亮微医疗器械科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a simple and reasonable structure, simple and convenient process, easy to manufacture, easy to operate, conform to the existing infusion standards and can solve the defects involved in the above-mentioned background technology, overcome the risks existing in the background technology, and effectively solve the problem of intravenous indwelling needles. A kind of infusion indwelling needle that causes blood coagulation, thrombus formation or blockage during use

Method used

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  • Infusion indwelling needle
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  • Infusion indwelling needle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment one: see attached figure 1 , 3 , 5, 8, and 9 show:

[0033]An infusion indwelling needle, comprising a catheter assembly, a needle tube assembly, and an infusion connector 1 or an infusion connector 1 assembly, the catheter assembly includes a three-way catheter base and a catheter 6 arranged at the front end of the three-way catheter base; the needle tube assembly includes The needle base 4 and the steel needle 7 fixed on the needle base 4, the steel needle 7 is inserted in the catheter 6 and the three-way catheter base; the three-way catheter base is a three-way tube with an infusion switch Catheter base; the three-way catheter base includes a three-way catheter base body 5 and a switch input end 3 ; the switch input end 3 includes a switch output seat 18 and a switch input seat 9 .

[0034] During use, turn the switch input seat 9 to open or close the indwelling needle at constant pressure, or push and pull the switch input seat 9 to open or close the in...

Embodiment 2

[0035] Embodiment two: see attached figure 1 , 2 Shown:

[0036] An infusion indwelling needle, comprising a catheter assembly, a needle tube assembly, and an infusion connector 1 or an infusion connector 1 assembly, the catheter assembly includes a three-way catheter base and a catheter 6 arranged at the front end of the three-way catheter base; the needle tube assembly includes The needle base 4 and the steel needle 7 fixed on the needle base 4, the steel needle 7 is inserted in the catheter 6 and the three-way catheter base; the three-way catheter base is a three-way tube with an infusion switch Catheter base; the three-way catheter base includes a three-way catheter base body 5 and a switch input end 3; the switch input base 9 is connected to the infusion joint 1 or the infusion joint 1 assembly through a long conduit 2; the switch input end 3 includes a switch The output seat 18 and the switch input seat 9; there is a gasket 13 between the switch output seat 18 and the ...

Embodiment 3

[0040] Embodiment three: see attached image 3 , 4 Shown:

[0041] An infusion indwelling needle, comprising a catheter assembly, a needle tube assembly, and an infusion connector 1 or an infusion connector 1 assembly, the catheter assembly includes a three-way catheter base and a catheter 6 arranged at the front end of the three-way catheter base; the needle tube assembly includes The needle base 4 and the steel needle 7 fixed on the needle base 4, the steel needle 7 is inserted in the catheter 6 and the three-way catheter base; the three-way catheter base is a three-way tube with an infusion switch Catheter base; the three-way catheter base includes a three-way catheter base body 5 and a switch input end 3; the switch input end 3 includes a switch output seat 18 and a switch input seat 9; the switch output seat 18 is internally provided with a piston chamber 25; one end of the switch input seat 9 is provided with a piston column 26 and the other end is provided with a pist...

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Abstract

The invention discloses an infusion indwelling needle. The infusion indwelling needle comprises a catheter assembly, a needle tube assembly and an infusion connector or an infusion connector assembly, and the catheter assembly comprises a three-way catheter base and a catheter arranged at the front end of the three-way catheter base; the needle tube assembly comprises a needle seat and a steel needle fixedly arranged on the needle seat, the steel needle is inserted into the catheter and the three-way catheter base, and the infusion indwelling needle is characterized in that the three-way catheter base has a switch function; the three-way catheter base comprises a three-way catheter base main body and a switch input end; the switch input end comprises a switch output seat and a switch input seat. The invention aims to provide an infusion indwelling needle which is simple and reasonable in structure, simple and convenient in process, easy to manufacture and simple and convenient to operate, conforms to the existing infusion specifications, can overcome the defects in the background technology, overcomes the risks in the background technology, and effectively solves the problems of blood coagulation, thrombus formation or blockage in the use process of a venous indwelling needle.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a positive-pressure slow-release antithrombotic indwelling needle for clinical venipuncture. Background technique [0002] With the extensive clinical use of indwelling needles, the hidden risks of indwelling catheters have gradually been reported. These problems are mainly the problems of blood return, coagulation and blockage of indwelling catheters. Up to now, in order to overcome the risk of coagulation and blockage of venous indwelling needles, positive pressure connectors and catheter flushers are currently used clinically to solve the above problems. One of the main causes of blood return and tube blockage is the positive pressure connector of the current positive pressure indwelling needle. After the infusion is completed, due to structural problems, when the infusion set is pulled out after the infusion, the positive pressure connector ejects the stored liquid due to the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/158A61M39/22
CPCA61M5/158A61M39/22A61M2005/1586A61M2005/1587
Inventor 王亮东张焕娥王雪灏
Owner 常熟市精亮微医疗器械科技有限公司
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