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Device and method for body fluid flow control in extracorpereal fluid treatment

A control device, body fluid technology, applied in the system application. , in all aspects of the field, it can solve the problems of restricting the application of household treatment systems, hindering the inflow of body fluids, tissue damage, etc.

Inactive Publication Date: 2008-01-23
KIDNEY THERAPEUTICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The proficiency and precautions required for monitoring also limit the use of home treatment systems that can be operated by patients themselves
[0007] A similar risk of aspirating other body fluids from the body is that the tissue surrounding the catheter collapses, preventing fluid from flowing into the catheter and possibly causing subcutaneous bleeding or other tissue damage

Method used

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  • Device and method for body fluid flow control in extracorpereal fluid treatment
  • Device and method for body fluid flow control in extracorpereal fluid treatment
  • Device and method for body fluid flow control in extracorpereal fluid treatment

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Embodiment Construction

[0031] To facilitate an understanding of the principles of the invention, reference will now be made to the embodiments illustrated in the drawings and specific terminology will be used to describe the same. However, it should be understood that this is not a limitation to the scope of the present invention, and those skilled in the art can make further improvements and modifications to the shown devices according to the principle of the present invention.

[0032]In general terms, the present invention includes a pumping assembly for flowing fluid in a fluid flow path, the pumping assembly being particularly suitable for use in an extracorporeal fluid treatment system. The pumping assembly includes a pump chamber connected and in fluid communication with the fluid flow path, the pump chamber configured to alternately draw bodily fluid into the pump chamber at a predetermined vacuum pressure and out of the pump chamber at a predetermined positive pressure .

[0033] Figure 1 ...

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Abstract

Disclosed are devices and methods for the control of body fluid flow in the extracorporeal treatment of body fluid. Body fluid flow through on of a body fluid flow circuit (10, 50, 60, 100 or 250) is controlled by alternating applying vacuum pressure and positive pressure to the circuit through a pumping chamber (30, 51, 66, 102, or 200) coordinated with flow control valves (40, 42, 44, 62, 114, 116, 118, and 120) to effect a net downstream flow of body fluid through the circuit.

Description

[0001] Referenced related applications [0002] This application claims the benefit of US Provisional Application Serial No. 60 / 239,641, filed October 12, 2000, which is hereby incorporated by reference in its entirety. Background technique [0003] The present invention relates to devices and methods for controlling the flow of blood or other body fluids in the extracorporeal treatment of blood or other body fluids. More particularly, the present invention relates to the use of alternating positive and negative pressures applied to a blood flow circuit or a body fluid flow circuit of a treatment device to control the flow of blood or other fluids during pumping of blood or other body fluids in extracorporeal treatments. Devices and methods for bodily fluid flow. The present invention also relates to devices and methods for withdrawing blood or other bodily fluids from a patient by applying alternating positive and negative pressures to a fluid flow circuit. [0004] Current...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M37/00A61M1/00C02F1/44F04B19/00F04B49/00A61M1/36A61M1/10A61M1/14
CPCA61M1/1037A61M1/3663A61M2001/1065A61M2001/1062A61M1/3621A61M2205/3334A61M60/113A61M60/43A61M60/435A61M60/546A61M60/37
Inventor S·R·阿斯
Owner KIDNEY THERAPEUTICAL