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Blood collection device for hemodialysis

A blood collection and hemodialysis technology, applied in blood sampling devices, applications, medical science, etc., can solve the problems of inability to accurately control the blood collection volume, blood vessel collapse, etc., to avoid rapid changes in blood flow, stable changes in negative pressure state, Avoid the effect of blood vessel collapse

Pending Publication Date: 2022-06-24
THE AFFILIATED HOSPITAL OF SOUTHWEST MEDICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the blood collection tube with preset negative pressure cannot accurately control the blood collection volume during blood collection, and introduces a sharp negative pressure at the moment when the blood collection needle is inserted into the blood collection tube. This sharp negative pressure will cause blood to flow out of the patient's blood vessel at a high initial flow rate , which is prone to the problem of vascular collapse

Method used

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  • Blood collection device for hemodialysis
  • Blood collection device for hemodialysis
  • Blood collection device for hemodialysis

Examples

Experimental program
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Effect test

Embodiment 1

[0037] In the embodiment, a blood collection device for hemodialysis is provided, which specifically includes a blood guide assembly, a housing 1, and N negative pressure thin tubes 2 fixed in parallel inside the housing 1;

[0038] In this embodiment, combining figure 1 and figure 2 It can be seen that the inner space of the negative pressure thin tube 2 is a columnar structure with the same size everywhere, and the two ends of each negative pressure thin tube 2 are set as the feed end and the material guide end respectively. The feed end of the 10000000000 is provided with a connecting head 3 running through the casing 1, the connecting head 3 can be connected with the blood guiding assembly, and the connecting head 3 is only connected with the blood guiding assembly. side conduction;

[0039] A connecting pipe 4 is connected between every two adjacent negative pressure thin tubes 2, and the connecting pipe 4 is connected between the feeding end and the feeding end, and i...

Embodiment 2

[0059] In the embodiment, a blood collection device for hemodialysis is provided, which specifically includes a blood guide assembly, a housing 1, and N negative pressure thin tubes 2 fixed in parallel inside the housing 1;

[0060] In this embodiment, combining image 3 and Figure 4 It can be seen that the inner space of each negative pressure thin tube 2 is a structure in which the two ends are small and the middle is large, and the two ends of each negative pressure thin tube 2 are respectively the feed end and the material guide end. The feed end of each negative pressure thin tube 2 is provided with a connecting head 3 penetrating the casing 1 , the connecting head 3 can be connected with the blood-conducting assembly, and the connecting head 3 realizes the negative pressure only when it is connected with the blood-conducting assembly Conduction of the inner / outer sides of the thin tube 2;

[0061] A connecting pipe 4 is connected between every two adjacent negative pr...

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Abstract

The invention belongs to the technical field of blood collection, and discloses a blood collection device for hemodialysis, which comprises a blood guide assembly, a shell and N negative pressure thin tubes fixed in the shell in parallel, two ends of each negative pressure thin tube are respectively a feeding end and a guiding end, the feeding end of each negative pressure thin tube is provided with a connector penetrating through the shell, the connector can be connected with a blood guiding assembly, and the inner side and the outer side of each negative pressure thin tube are communicated only when the connector is connected with the blood guiding assembly; a connecting pipe is connected between every two adjacent negative pressure thin pipes, and the connecting pipes are connected between the feeding end and the material guiding end and used for achieving one-way communication from the material guiding end to the feeding end. In conclusion, the negative-pressure blood taking device is provided with the multiple negative-pressure thin tubes which are sequentially connected in series and achieve one-way circulation, specifically, the feeding end of each negative-pressure thin tube is provided with the connector, and therefore the specific blood taking amount can be accurately changed by connecting the different connectors with the blood taking needle assembly based on the negative-pressure blood taking device.

Description

technical field [0001] The invention belongs to the technical field of blood collection, and in particular relates to a blood collection device for hemodialysis. Background technique [0002] Hemodialysis is a blood purification technique, and before performing hemodialysis, a patient's blood sample needs to be collected and analyzed. In the existing blood collection process, one end of the blood collection needle is inserted into the patient's vein, and the other end is inserted into the blood collection tube with preset negative pressure. Due to the negative pressure of the blood collection tube, the blood automatically flows into the blood collection tube. However, the preset negative pressure blood collection tube cannot accurately control the blood collection volume during blood collection, and a sharp negative pressure is introduced at the moment when the blood collection needle is inserted into the blood collection tube, which will cause the blood to flow out of the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/15A61B5/154A61B5/155
CPCA61B5/150992A61B5/150946A61B5/154A61B5/155
Inventor 余兆兰
Owner THE AFFILIATED HOSPITAL OF SOUTHWEST MEDICAL UNIV
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