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Indwelling needle for venous blood collection

A technology for indwelling needles and veins, applied in the field of medical devices, can solve the problems of damage to the inner wall of blood vessels, inability to collect blood, and inconvenient occasions where multiple drugs are injected at the same time, and achieve the effect of compact structure

Inactive Publication Date: 2015-03-18
RENHE HOSPITAL CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing indwelling needle has the following defects: it can only be injected in one direction usually, and blood cannot be taken, and it still needs to be punctured in the vein again when blood is needed
[0003] The needle of the existing indwelling needle may damage the inner wall of the blood vessel during the indwelling process
Moreover, the existing indwelling needles usually only have one drug injection port, which is inconvenient when multiple drugs need to be injected at the same time

Method used

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  • Indwelling needle for venous blood collection
  • Indwelling needle for venous blood collection

Examples

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Embodiment Construction

[0019] Such as figure 2 Among them, a venous blood collection indwelling needle, including the indwelling needle, the side wall of the indwelling tube 7 communicates with the drug injection part through the flexible tube 4, the drug injection part is provided with at least one drug injection port, and the tail of the indwelling tube 7 is provided with a sealant 3. The head of the indwelling tube 7 is provided with an indwelling cannula 8, and the blood-drawing needle 12 protrudes from the indwelling cannula 8 through the sealant 3 at the tail of the indwelling tube 7, and the blood-drawing needle 12 passes through the hose 4 and the blood-guiding needle 13 connected. When in use, insert the blood drawing needle 12 into the sealant 3 at the tail of the indwelling tube 7, and pass through the indwelling cannula 8 into the venous blood vessel, and then connect the blood guide needle 13 to the negative pressure storage vessel to realize the blood collection function. The sealant...

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Abstract

An indwelling needle for venous blood collection comprises an indwelling needle. A side wall of an indwelling tube is communicated with an injection portion through a hose; at least one injection port is arranged on the injection portion; sealants are disposed at the rear portion of the indwelling tube; an indwelling sleeve is mounted at the head portion of the indwelling tube; a blood needle passes through the sealants of the rear portion of the indwelling tube and extends out of the indwelling sleeve; the blood needle is communicated with a blood guiding needle. With the indwelling needle for the venous blood collection comprising the specially designed indwelling tube and the blood needle, blood collection operation is realized without affecting liquid injection; with a further optimized indwelling needle provided with a flow limiter, liquid flow is limited, and structure is more compact.

Description

technical field [0001] The invention relates to a medical device, in particular to an indwelling needle which can be used for venous blood collection. Background technique [0002] For some patients, it is necessary to continuously inject medicinal liquid into the vein. In order to avoid excessive damage to the venous blood vessel, a venous indwelling needle is usually used, so that the venous blood vessel does not need to be repeatedly punctured. However, the existing indwelling needle has the following defects: it can only be injected in one direction usually, and blood cannot be taken, and it still needs to be punctured in the vein again when blood is needed. [0003] The needle of the existing indwelling needle may damage the inner wall of the blood vessel during the indwelling process. Moreover, the existing indwelling needle usually has only one drug injection port, which is inconvenient when multiple drugs need to be injected at the same time. Contents of the inven...

Claims

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Application Information

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IPC IPC(8): A61M5/158A61B5/153
CPCA61M5/158A61B5/153A61M2005/1587
Inventor 伍海燕贺大菊刘中文梁颖
Owner RENHE HOSPITAL CHINA THREE GORGES UNIV
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