On-line relative blood volume detection device and detection method

A detection device and blood volume technology, which are applied in medical science, sonic diagnosis, infrasound diagnosis, etc., can solve the problems of complicated operation of testing methods, underestimation of dry weight, and influence on venous return.

Inactive Publication Date: 2012-10-03
贝恩医疗设备(广州)有限公司
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  • Summary
  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

nVCD has certain limitations as a volume marker: first, it mainly reflects the intravascular volume, and cannot reflect the full blood volume status
Second, measuring nVCD immediately after dialysis often leads to an underestimation of dry weight, and it is recommended to measure it at least two hours after dialysis, so it is difficult to apply in clinical practice
Third, obvious cardiopulmonary disease affects venous return, and it is not suitable to measure nVCD to evaluate dry weight
Fourth, when the distribution of intracellular fluid is not proportional, such as increased capillary permeability, it will also affect the nVCD value
Therefore, the testing methods in the prior art are all limited due to complicated operations.

Method used

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  • On-line relative blood volume detection device and detection method
  • On-line relative blood volume detection device and detection method
  • On-line relative blood volume detection device and detection method

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Experimental program
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Effect test

Embodiment 1

[0101] An online relative blood volume detection device, such as figure 1 As shown, a processor 100, a timer 200, an ultrasonic transmitting circuit 300, an ultrasonic receiving circuit 600, a zero-crossing detection circuit 700, and an ultrasonic transmitting probe 400 and an ultrasonic receiving probe 500 disposed on both sides of an arterial pot 800 are provided.

[0102] The processor 100 is also provided with a third output terminal 150 for outputting results, a third input terminal 160 for receiving external input information, and a communication terminal 170 for connecting with a communication interface.

[0103] The display device is connected with the third output end 150 of the processor 100 so that the processing result of the processor 100 is displayed, the input device is connected with the third input end 160 of the processor 100 so that relevant information is input to the processor 100, and the communication interface and The communication terminal 170 is conn...

Embodiment 2

[0162] An online relative blood volume detection device, other structures are the same as in Embodiment 1, such as Figure 5 As shown, the difference is that the ultrasonic transmitting circuit 300 is also provided with an initial sound intensity feedback output terminal 340, the ultrasonic receiving circuit 600 is also provided with a final state sound intensity feedback output terminal 620, and the processor 100 is provided with an initial state sound intensity input terminal 620. Terminal 180, final state sound intensity input terminal 190.

[0163] The initial state sound intensity feedback output terminal 340 is connected to the initial state sound intensity input end 180 , and the final state sound intensity feedback output end 620 is connected to the final state sound intensity input end 190 .

[0164] The sound intensity feedback output end 340 of the ultrasonic transmitting circuit 300 outputs initial state sound intensity information to the initial state sound intens...

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Abstract

The invention relates to an on-line relative blood volume detection device and a detection method. The on-line relative blood volume detection device comprises a processor, a timer, an ultrasonic transmitting circuit, an ultrasonic receiving circuit, a zero crossing detection circuit, an ultrasonic transmission probe and an ultrasonic receiving probe, wherein the ultrasonic transmission probe and the ultrasonic receiving probe are arranged on two sides of an artery pot; the processor is a singlechip MSP 430; and the timer specifically is a TDC-GP2 timer. According to the on-line relative blood volume detection device and the detection method, the relative blood volume is worked out accurately and promptly by measuring the travel time of ultrasonic waves in the blood, and the ultrasonic transmission probe and the ultrasonic receiving probe are arranged on two sides of the artery pot for measuring, so that the characteristic of non-invasion can be achieved; moreover, the invention has the characteristics of real-timeness, portability, repeatability and accurate measuring result and can help medical staff to detect the relative blood volume of a dialysis patient in a real-time manner so as to effectively judge the body weight of the dialysis patient.

Description

technical field [0001] The invention relates to medical equipment technology, in particular to an online relative blood volume detection device and a detection method thereof. Background technique [0002] In recent years, the number of acute and chronic renal failure patients in the world has increased year by year, and the effective treatment is mainly maintenance hemodialysis. Hemodialysis technology has been relatively mature, and further improving the quality of hemodialysis has become one of the development directions for the treatment of patients with renal failure. [0003] One of the main purposes of hemodialysis is to remove the water retained between dialysis, so that the patient reaches a dry weight at the end of dialysis. The so-called "dry body weight" refers to the body weight corresponding to the normal volume of water in the patient's body after dialysis. If the water load is too high or too low, the patient's quality of life will be reduced. The incidence...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B8/00A61M1/14
Inventor 蒋顺忠范江红夏武兵
Owner 贝恩医疗设备(广州)有限公司
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