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Continuous CRRT machine capacity balancing device

A technology of balancing device and volume, applied in suction devices, drug devices, and other medical devices, etc., can solve the problems of inability to rescue and treat critically ill patients, inability of CRRT machines to work, and difficulty in achieving volume balance errors in flowmeter control. Achieve the effect of continuous treatment

Inactive Publication Date: 2016-05-04
龚德华 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Obviously, there are drawbacks in controlling the balance of incoming and outgoing liquids by dynamically measuring the weight of the liquid with a scale: first, the scale needs to be calibrated frequently, and the accuracy will gradually decrease during use; The collision of the scale will not work, so the existing CRRT machine cannot work in the mobile environment
However, it is difficult for the flowmeter to control the capacity balance error to be less than 1%.
[0010] In addition, existing CRRT machines are not suitable for CRRT treatment in mobile vehicles such as airplanes, automobiles, trains, and ships, which brings urgent need for CRRT treatment, but due to distance and transportation restrictions, CRRT treatment cannot be performed. Challenges, such as soldiers injured on the battlefield can only be transported back to the medical base for rescue and treatment, and critically ill patients cannot be rescued and treated in ambulances

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1, Such as figure 1 , 7 As shown, it is a post-dilution filtration mode structure. When it is a filtration mode, the replacement fluid / dialysis fluid container is usually called a replacement fluid container; the exogenous replacement fluid / dialysis fluid container is usually called an exogenous replacement fluid container. The replacement fluid and the dialysate are the same fluid, and the container containing the fluid is also the same container. If the name of each component of the container involves the words "replacement" and "dialysis", different names of "replacement" and "dialysis" should be selected according to the different treatment modes.

[0039] A continuous CRRT machine capacity balance device, including a blood circulation system composed of an inlet blood vessel 1, a blood pump 2, a hollow fiber dialyzer 3, and a return blood vessel 4, and a liquid outlet pipeline 5, a liquid pump 6, a replacement fluid The first liquid circulation system ...

Embodiment 2

[0055] Example 2: Such as figure 2 , 7 As shown, this embodiment is basically the same as Embodiment 1 in structure, connection mode, operation mode, etc., and the difference from Embodiment 1 is that the front end of the outlet pipeline 5 is also provided with an ultrafiltration pipeline 20, an ultrafiltration pump 21. The ultrafiltration system formed by the ultrafiltration container 22.

[0056] The ultrafiltration system also includes a flow monitoring device, which is installed on the ultrafiltration pipeline 20 to monitor the flow rate and flow rate of the liquid in the ultrafiltration pipeline 20 .

Embodiment 3

[0057] Example 3, Such as image 3 , 7 As shown, it is the structure of the pre-dilution filtration mode. When it is the filtration mode, the replacement fluid / dialysis fluid container is usually called the replacement fluid container; the exogenous replacement fluid / dialysis fluid container is usually called the exogenous replacement fluid container. The replacement fluid and the dialysate are different fluids, but the fluid is contained in the same container. If the name of each component of the container involves the words "replacement" and "dialysis", different names of "replacement" and "dialysis" should be selected according to the different treatment modes.

[0058] A continuous CRRT machine capacity balance device, including a blood circulation system composed of an inlet blood vessel 1, a blood pump 2, a hollow fiber dialyzer 3, and a return blood vessel 4, and a liquid outlet pipeline 5, a liquid pump 6, a replacement fluid The first liquid circulation system com...

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Abstract

The invention discloses a continuous CRRT machine capacity balancing device which comprises a blood circulation system and a first liquid circulation system. The blood circulation system is composed of a blood inlet pipeline, a blood pump, a hollow fiber dialyzer and a blood return pipeline. The first liquid circulation system is composed of a liquid outlet pipeline, a liquid pump, two displacement liquid / dialyzate containers, a hollow fiber dialyzer and a liquid return pipeline. The device further comprises a second liquid circulation system composed of an exogenous displacement liquid / dialyzate container, an exogenous displacement liquid / dialyzate container liquid outlet pipeline, a circuit breaking device, a liquid pump, a displacement liquid / dialyzate container and an exogenous displacement liquid / dialyzate container liquid return pipeline. The first liquid circulation system and the blood circulation system make contact for substance exchange, and capacity changes are not involved in the exchange process due to the fact that the volume is constant. In the second liquid circulation system, the two displacement liquid / dialyzate containers are oppositely arranged by turns for liquid exchange, so that the containers are filled with clean fresh displacement liquid again, and the purpose of continuously removing solute in the mobile environment is achieved.

Description

technical field [0001] The invention belongs to a continuous blood purification device, in particular to a continuous CRRT machine capacity balance device. Background technique [0002] CRRT (that is, continuousrenalreplacementtherapy) is an abbreviation for continuous renal replacement therapy. Also known as CBP (continuous blood purification); bedside blood filtration. It is a long-term, continuous extracorporeal blood purification therapy used 24 hours a day or close to 24 hours to replace damaged kidney function. [0003] In 1995, at the first international CRRT academic conference held in San Diego, USA, CRRT was officially defined as: all blood purification technologies that can continuously remove solutes and support organ functions. During the Second World War, Murray and Delmore in Canada successfully developed the first artificial kidney machine, which was used in clinical treatment of renal failure in 1946, after which blood purification technology developed rap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M1/18
CPCA61M1/16A61M1/1615A61M1/1637A61M2202/0413A61M2202/0021
Inventor 龚德华刘志红徐斌
Owner 龚德华
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