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Indwelling needle infusion switch

An indwelling needle and switch technology, applied in the field of medical devices, can solve problems such as coagulation and thrombus formation, and achieve the effects of reducing passage space, avoiding blood return, and avoiding negative pressure blood return.

Inactive Publication Date: 2021-11-02
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. An indwelling needle infusion switch that causes blood coagulation, thrombus formation or blockage during use

Method used

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  • Indwelling needle infusion switch
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment one: see attached Figure 1-3 Shown:

[0029] An indwelling needle infusion switch, which needs to be connected in series to the indwelling needle infusion channel, and is composed of an access part and an output part; the sealing sliding parts of the access part and the output part are in sliding and sealing fit, and the access part The sealing and sliding parts of both the part and the output part are respectively the piston rod 13 and the piston chamber 17, or the piston chamber 17 and the piston rod 13; 20.

[0030] One end of the above-mentioned access part and output part is respectively connected to the indwelling needle long catheter 2, and the other end of the piston rod 13 is inserted into the piston chamber 17 for matching connection. There is an infusion channel inside the piston rod 13 and an infusion opening at the front end. By sliding back and forth longitudinally to open and close the infusion channel, the infusion channel is opened when th...

Embodiment 2

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

[0033]An indwelling needle infusion switch, connected in series to the indwelling needle infusion channel, wherein the indwelling needle includes an infusion connector 1, an indwelling needle long catheter 2, an indwelling needle infusion switch 3, a needle seat 4, a three-way catheter seat 5, and a catheter 6. Steel needle 7; wherein the indwelling needle infusion switch 3 is composed of an access part and an output part; the sealing sliding parts of the access part and the output part are in sliding and sealing fit, and the sealing sliding parts of the access part and the output part The sealing and sliding parts are piston rod 13 and piston chamber 17 respectively; one end of the access part is the pipeline access end, that is, the piston rod seat 20, and the other end is the piston rod 13; the piston rod tube in the pipeline connection end The road connection passage 16 is connected with the indwelling n...

Embodiment 3

[0035] Embodiment three: see attached figure 1 , 2 , 3, and 4 show:

[0036] An indwelling needle infusion switch, connected in series to the indwelling needle infusion channel, wherein the indwelling needle includes an infusion connector 1, an indwelling needle long catheter 2, an indwelling needle infusion switch 3, a needle seat 4, a three-way catheter seat 5, and a catheter 6. Steel needle 7; wherein the indwelling needle infusion switch 3 is composed of an access part and an output part; the sealing sliding parts of the access part and the output part are in sliding and sealing fit, and the sealing sliding parts of the access part and the output part The sealing and sliding parts are piston rod 13 and piston chamber 17 respectively; one end of the access part is the pipeline access end, and the other end is the piston rod 13; the indwelling needle infusion switch is equipped with an energy storage device, and the energy storage device A spring is arranged between the ac...

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Abstract

The invention discloses an indwelling needle infusion switch. The indwelling needle switch needing to be connected into an indwelling needle infusion channel in series for use is composed of an access part and an output part. The sealing sliding parts of the access part and the output part are in sliding sealing fit, and the sealing sliding parts of the access part and the output part are respectively a piston column and a piston cavity or a piston cavity and a piston column; the other ends, corresponding to the piston cavity and the piston column, of the piston cavity and the piston column are a piston cavity base and a piston column base respectively. The invention aims to provide the infusion switch which is simple and reasonable in structure, simple and convenient in process, easy to manufacture and simple and convenient to operate, which conforms to the existing infusion specifications, solves the defects in the background technology, and overcomes the risks in the background technology. The indwelling needle infusion switch 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 an indwelling needle infusion switch, which is assembled in the indwelling needle as an accessory. 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 coagulation and blockage of indwelling catheters. Up to now, in order to overcome the risk of blood coagulation and blockage of venous indwelling needles, disposal solutions such as positive pressure connectors and catheter flushers are currently used to solve the above problems. 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 solutions, such as the positive pressure slow-release technology, but due to design problems, the final step is the same as the conventional...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/158A61M39/10A61M39/22
CPCA61M5/158A61M39/10A61M39/22A61M2005/1587
Inventor 王亮东张焕娥
Owner 常熟市精亮微医疗器械科技有限公司
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