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Plasma storage bag special for plasma exchange, absorption, and filtration treatment

A plasma exchange and storage bag technology, applied in the field of biomedicine, can solve the problems of large blood volume in extracorporeal circulation, reduce invalid circulation, etc., and achieve the effects of avoiding invalid circulation, eliminating invalid circulation, and convenient and safe treatment.

Inactive Publication Date: 2013-08-28
ZHEJIANG UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a special plasma storage bag for plasma exchange, adsorption and filtration treatment, which combines plasma exchange with plasma adsorption and hemofiltration conveniently and effectively for treatment, and solves the problem of combining multiple treatment modes. The problem of excessive blood volume in extracorporeal circulation makes the plasma of patients with liver failure flow through the adsorption filtration purification unit many times to form an efficient circulation pathway, reduce invalid circulation, and achieve better therapeutic effect

Method used

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  • Plasma storage bag special for plasma exchange, absorption, and filtration treatment
  • Plasma storage bag special for plasma exchange, absorption, and filtration treatment
  • Plasma storage bag special for plasma exchange, absorption, and filtration treatment

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Embodiment

[0022] Such as figure 2 As shown, first use a special artificial liver treatment device for plasma exchange, draw venous blood from the 13 femoral veins of the patient, the blood flow rate is 100-120ml / min, the blood reaches the plasma separator 15 through the main blood pump 14, and then passes through the plasma separation pump 16. Keep the plasma separation speed at 20ml / min, and reinfuse the fresh plasma through the slurry return pump 17, keeping the same speed as the separation speed. Perform plasma exchange for about 1 hour first, and complete the plasma exchange volume of about 1500ml. In the second half of the plasma exchange, the separated waste plasma enters the outer cavity of the plasma storage bag from the separated plasma inlet 1, the clip 9 is opened, and the clip 10 , 11, 12 are clamped all the time, when about 600ml of waste plasma is collected, the outer bag expands elastically, and the plasma flattens the inner cavity, the two valves of the one-way valve lo...

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Abstract

The invention discloses a plasma storage bag special for plasma exchange, absorption, and filtration treatment. The plasma storage bag comprises a plasma storage bag body and auxiliary connecting pipelines. The plasma storage bag body comprises an outer bag and an inner bag, and inner and outer cavities are connected with each other through a one-way valve composed of a double-layered membrane. A separated-plasma inlet communicated with the outer cavity and a purified-plasma inlet communicated with the inner cavity are reserved at the top of the plasma storage bag. A backflow-plasma outlet served as an outflow outlet for the inner cavity and a purified-plasma outlet served as an outflow outlet for the outer cavity are reserved at the bottom of the plasma storage bag. By the arrangement, the problem that extracorporeal circulation capacity jointed by complex treatment is larger is solved, and treatment is safer and more convenient; and by design of the inner and outer cavities and a structure of liquid velocity difference in operation, plasma of a patient with liver failure goes through multiple times of extracorporeal absorption and filtration purifying circulations, efficient circulation passages can be formed, inefficient circulations can be avoided, and better treatment effect can be exerted.

Description

technical field [0001] The invention belongs to the technical field of biomedicine and relates to a medical device, which is a special plasma storage bag for plasma replacement adsorption filtration treatment. Background technique [0002] Liver failure is a critical condition with rapid progress and high mortality rate. The treatment of liver failure has always been a worldwide problem. Artificial liver replacement therapy can temporarily replace liver function, remove toxins related to liver failure, and promote liver cell regeneration. It has become an important means for the treatment of severe hepatitis liver failure. Artificial liver treatment is divided into biological artificial liver and non-biological artificial liver. Due to the limitation of lack of powerful cell source and high-efficiency bioreactor, biological artificial liver has not entered clinical application. The most notable is the non-biological artificial liver. The basic means of non-biological artif...

Claims

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Application Information

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IPC IPC(8): A61M1/14
Inventor 李兰娟周宁相国明
Owner ZHEJIANG UNIV
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