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Positive pressure remaining needle

A technique of indwelling needles and needle tubes, applied in the directions of needles, devices introduced into the body, valves, etc., can solve problems such as thrombus formation and coagulation, and achieve the effect of avoiding passive movement, avoiding blood return to block the tube, and reducing space.

Inactive Publication Date: 2021-10-29
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 positive pressure indwelling needle that causes problems with clotting, thrombus formation, or clogging during use

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0028] Embodiment one: see attached figure 1 , 2 , as shown in 3:

[0029] A positive pressure indwelling needle, including 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 adapter 5 and a catheter 6 arranged at the front end of the three-way catheter adapter 5; The needle tube assembly includes a needle base 4 and a steel needle 7 fixed on the needle base 4, and the steel needle 7 is inserted into the catheter 6 and the three-way catheter base 5; the three-way catheter base 5 passes through a long The catheter 2 and the infusion switch 3 are connected to the infusion joint 1 or the components of the infusion joint 1; the infusion switch 3 is connected in series in the indwelling needle infusion channel, and the infusion switch 3 is a positive pressure infusion switch 3; the infusion switch 3 is vertically Slide the infusion switch 3 on and off.

[0030] Both end...

Embodiment 2

[0032] Embodiment two: see attached figure 1 , 2 , as shown in 4:

[0033]A positive pressure indwelling needle, including 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 adapter 5 and a catheter 6 arranged at the front end of the three-way catheter adapter 5; The needle tube assembly includes a needle base 4 and a steel needle 7 fixed on the needle base 4, and the steel needle 7 is inserted into the catheter 6 and the three-way catheter base 5; the three-way catheter base 5 passes through the infusion The switch 3 and the long catheter 2 are connected to the infusion joint 1 or the components of the infusion joint 1; the infusion switch 3 is connected in series in the indwelling needle infusion channel, and the infusion switch 3 is a positive pressure infusion switch; the infusion switch 3 slides longitudinally On and off; the infusion switch 3 includes an acces...

Embodiment 3

[0035] Embodiment three: see attached figure 1 , 2 , as shown in 5:

[0036] A positive pressure indwelling needle, including 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 adapter 5 and a catheter 6 arranged at the front end of the three-way catheter adapter 5; The needle tube assembly includes a needle base 4 and a steel needle 7 fixed on the needle base 4, and the steel needle 7 is inserted into the catheter 6 and the three-way catheter base 5; the three-way catheter base 5 passes through the infusion The switch 3 is connected to the infusion joint 1 or the infusion joint 1 assembly; the infusion switch 3 is directly bonded or assembled to the input end of the three-way catheter holder 5; the infusion switch 3 is opened and closed by sliding longitudinally; the infusion switch 3 includes Access part and output part, the axes of the input channel and output ch...

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Abstract

The invention discloses a positive pressure remaining needle. The positive pressure remaining needle comprises a catheter assembly, a needle tube assembly and an infusion connector or an infusion connector assembly; 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 base and a steel needle fixedly arranged on the needle base; the steel needle is inserted into the catheter and the three-way catheter base; the three-way catheter base is connected with the infusion connector or the infusion connector assembly through an infusion switch or the infusion switch and a long catheter; the infusion switch is connected into an infusion channel of the remaining needle in series and is a positive pressure infusion switch; and the infusion switch is opened and closed in a longitudinal sliding mode. The positive pressure remaining needle is simple and reasonable in structure, simple in process, easy to manufacture and easy and convenient to operate, meets existing infusion standards, 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 blocking in the use process of a vein remaining needle.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a positive pressure indwelling needle for positive pressure antithrombosis used in 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 problem of blockage caused by blood return and coagulation of indwelling catheters. So far, in order to overcome the risk of venous indwelling needle blockage, the current clinical use of positive pressure connectors and catheter flushers and other treatment solutions, however, although manufacturers claim to be able to solve the above problems, but in fact can not really effectively solve the above phenomenon, For example, the actual positive pressure output of the product is too small and the time is too short and too urgent, resulting in reflux and blood return. Now there are other technical...

Claims

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Application Information

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