Fiber assembly for in vivo plasma separation
First Claim
Patent Images
1. A fiber assembly for being implanted in a blood vessel for carrying out in vivo plasma separation comprising:
- an elongated hollow catheter having a circumferential fan-like assembly of elongated microporous hollow polymeric fiber loops spaced apart circumferentially and axially, each fiber loop extending substantially radially from the outer surface of said elongated catheter with the interior of each said hollow fiber communicating with the lumen of said catheter, and wherein said catheter comprises a plurality of elongated arc-shaped segments joined axially along said lumen, each of said segments having a plurality of said elongated fiber loops extending radially therefrom.
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Abstract
An improved plasma extraction element for being implanted in a blood vessel for carrying out in vivo plasma separation comprises an elongated catheter having a fan-like assembly of elongated hollow microporous polymeric fibers loops spaced apart along the outer catheter surface. According to the invention the catheter is made from a plurality of elongated arc-shaped segments, a helically wrapped elongated polymer ribbon, a flexible polymer sheet and a plurality of polymer washers.
246 Citations
61 Claims
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1. A fiber assembly for being implanted in a blood vessel for carrying out in vivo plasma separation comprising:
an elongated hollow catheter having a circumferential fan-like assembly of elongated microporous hollow polymeric fiber loops spaced apart circumferentially and axially, each fiber loop extending substantially radially from the outer surface of said elongated catheter with the interior of each said hollow fiber communicating with the lumen of said catheter, and wherein said catheter comprises a plurality of elongated arc-shaped segments joined axially along said lumen, each of said segments having a plurality of said elongated fiber loops extending radially therefrom. - 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. A fiber assembly for being implanted in a blood vessel for carrying out in vivo plasma separation comprising an elongated polymer ribbon helically wrapped to form an elongated hollow catheter and having a plurality of elongated hollow microporous polymeric fiber loops extending outwardly therefrom, each of said hollow fiber loops comprising first and second elongated hollow legs joined by an integral hollow loop at the distal end thereof and wherein the hollow interior of each leg of said fiber loop communicates with the lumen of said catheter.
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45. A fiber assembly for being implanted in a blood vessel for carrying out in vivo plasma separation comprising:
an elongated hollow catheter having a circumferential fan-like assembly of elongated microporous hollow polymeric fiber loops spaced apart circumferentially and axially, each fiber loop extending substantially radially from the outer surface of said elongated catheter with the interior of each said hollow fiber communicating with the lumen of said catheter, and wherein said catheter comprises a flexible polymer sheet having a plurality of rows of said hollow polymeric fiber loops extending from a first surface thereof and wherein the interior of said hollow fiber loops are exposed on a second opposite surface of said sheet, wherein said sheet is wrapped around a mandrel to form said catheter having said elongated fiber loops extending radially therefrom. - View Dependent Claims (46, 47, 48, 49, 50)
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51. A fiber assembly for being implanted in a blood vessel for carrying out in vivo plasma separator comprising:
a plurality of annular segments aligned along a common axis and joined therealong to form an elongated catheter, each said segment comprising a polymer washer having a first side and an opposite second side, and a plurality of elongated hollow microporous polymeric fiber loops secured to said first and second sides of said washer and extending radially from the outer peripheral edge thereof, said fiber loops being separated from one another circumferentially around the periphery of said washer, said catheter having a lumen extending axially along the center of said segments. - View Dependent Claims (52, 53, 54, 55, 56, 57, 58, 59, 60, 61)
Specification