Microporous membrane sheet plasma extraction catheter
First Claim
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1. An assembly for being implanted in a blood vessel for carrying out in vivo plasma separation comprising:
- a plasma extraction capsule comprising a plurality of panels or lobes formed of a microporous polymeric membrane sheet having a pore size capable of allowing plasma to diffuse therethrough, said capsule having one or more plasma flow channels therein, and a catheter secured to said capsule and comprising at least one lumen in fluid communication with said one or more plasma flow channels.
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Abstract
An assembly for being implanted in a blood vessel for carrying out in vivo plasma separation incorporates a plasma extraction capsule formed of a microporous polymeric membrane sheet having a pore size capable of allowing diffusion of plasma, the capsule having one or more interior plasma flow channels and a catheter secured to the capsule and having at least one lumen in fluid communication with the one or more interior capsule channels.
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Citations
33 Claims
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1. An assembly for being implanted in a blood vessel for carrying out in vivo plasma separation comprising:
a plasma extraction capsule comprising a plurality of panels or lobes formed of a microporous polymeric membrane sheet having a pore size capable of allowing plasma to diffuse therethrough, said capsule having one or more plasma flow channels therein, and a catheter secured to said capsule and comprising at least one lumen in fluid communication with said one or more plasma flow channels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A method of forming a plasma extraction device for in vivo separation of plasma from blood comprising:
forming a plurality of plasma extraction lobes or panels using a plurality of membrane sheets having a pore size between 0.001μ and
1μ
, folding each of said sheets and joining the adjacent edges of each said folded sheet to form generally flat lobes or panels, and securing each of said lobes or panels along a catheter.
Specification