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Apparatus and method for in vivo plasma separation

  • US 4,950,224 A
  • Filed: 08/05/1988
  • Issued: 08/21/1990
  • Est. Priority Date: 08/05/1988
  • Status: Expired due to Fees
First Claim
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1. An apparatus for continuous in vivo plasma separation, comprising:

  • at least one elongated microporous fiber having a hollow interior, said fiber being dimensioned to be received within a blood vessel without significantly obstructing fluid flow through said blood vessel, the pore size of said fiber being sufficient to allow plasma to diffuse through said pores into said hollow interior of said fiber but not sufficient to allow cellular components larger than plasma to diffuse therethrough; and

    said hollow interior of said elongated fiber being in fluid communication with a means for conducting plasma comprising a first discrete hollow tube which connects to one end of the fiber and permits passage of plasma from said hollow interior of said fiber and a second discrete hollow tube which returns plasma to said blood vessel such that plasma being removed from said fiber is kept separated from plasma being returned to the blood vessel.

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