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Indwelling needle

A technology of indwelling needles and needle tubes, applied in the field of indwelling needles, can solve problems such as blood coagulation and thrombus formation, and achieve the effects of reducing access space, avoiding passive movement, and small volume

Pending 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. An indwelling needle that has problems with blood clotting, thrombus formation, or clogging during use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment one: see attached figure 1 , 2 , as shown in 3:

[0036]An 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 seat 5 and a catheter 6 arranged at the front end of the three-way catheter seat 5; the needle tube The assembly includes a needle base 4 and a steel needle 7 fixed on the needle base 4, the steel needle 7 is inserted into the catheter 6 and the three-way catheter base 5; the indwelling needle long catheter 2 is connected in series There is an indwelling needle infusion switch 3; the indwelling needle infusion switch at least includes an access seat 9 and an output seat 18; the bottom wall of the inner cavity of the access seat 9 is provided with a liquid outlet 10; the inner cavity of the access seat 9 is liquid Enter the inner cavity of the output seat 18 from the liquid outlet hole 10; the axes of the input c...

Embodiment 2

[0039] Embodiment two: see attached figure 2 , 3 , 4, and 9 show:

[0040] An 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 seat 5 and a catheter 6 arranged at the front end of the three-way catheter seat 5; the needle tube assembly Including a needle base 4 and a steel needle 7 fixed on the needle base 4, the steel needle 7 is inserted into the catheter 6 and the three-way catheter base 5; the inner cavity of the three-way catheter base 5 can be connected with The cavity of the infusion joint 1 assembly is connected; the bottom wall of the cavity of the access seat 9 is provided with a liquid outlet hole 10; the axis of the input passage 8 in the access seat 9 and the output passage 17 in the output seat 18 are in line with The axes of the indwelling needle infusion switch 3 overlap; the access seat 9 and the output seat 18 are s...

Embodiment 3

[0043] Embodiment three: see attached figure 1 , 2 , 3, and 4 show:

[0044] An 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 seat 5 and a catheter 6 arranged at the front end of the three-way catheter seat 5; the needle tube assembly It includes a needle base 4 and a steel needle 7 fixed on the needle base 4, the steel needle 7 is inserted into the catheter 6 and the three-way catheter base 5; the inner cavity of the three-way catheter base 5 is passed through the infusion The infusion channel of the switch 3 communicates with the inner cavity of the infusion joint 1; the bottom wall of the inner cavity of the access seat 9 is provided with a liquid outlet hole 10; the outlet hole 10 communicates with the inner cavity of the output seat 18; The axis of the input channel 8 and the output channel 17 in the output seat 18 coincides w...

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Abstract

The invention discloses an indwelling needle. The indwelling needle comprises a catheter assembly, a needle tube assembly and an infusion connector, 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 seat, and an indwelling needle infusion switch is connected in series in the indwelling needle infusion passage; the indwelling needle infusion switch at least comprises an access seat and an output seat; a liquid outlet hole is formed in the bottom wall of an inner cavity of the access seat; and the axes of the input passage in the access seat and the output passage in the output seat coincide. The invention aims to provide an 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 The indwelling needle 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 used clinically for 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 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 to solve the above problems. However, even if the manufacturers claim that they can solve the above problems, they cannot actually solve the above phenomena effectively. 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. There are also other technical solutions, s...

Claims

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Application Information

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IPC IPC(8): A61M5/158A61M39/22
CPCA61M5/158A61M39/22A61M2005/1587
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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