Pheresis apparatus
First Claim
Patent Images
1. Apparatus comprising:
- a) a draw needle for drawing whole blood from a donor;
b) an input buffer in fluid communication with said draw needle via a first conduit;
c) a second conduit for fluidly coupling anticoagulant fluid to said first conduit for mixing with said drawn blood;
d) a separator for separating drawn blood into at least two fractional components, said separator having an input port and an output port;
e) a third conduit for fluidly coupling the input buffer to the input port;
f) a component container;
g) a fourth conduit for fluidly coupling the output port to said container;
h) an output buffer;
i) a fifth conduit in fluid communication with said output buffer and said fourth conduit;
j) a sixth conduit in fluid communication between said output buffer and said third conduit;
k) a return needle in fluid communication with one or more of said output buffer or said component container for transferring fluid therefrom to said donor; and
l) a seventh conduit for fluidly coupling said output buffer to a source of physiological solution.
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Abstract
The length of time required to draw, centrifugally separate, harvest blood components and return blood components is reduced by providing a two-arm pheresis system in which blood is drawn from one arm, anticoagulated and pumped into an input reservoir then transferred into a centrifuge bowl for separation, while separated blood components are harvested and returned to the donor from an output reservoir via another arm.
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Citations
30 Claims
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1. Apparatus comprising:
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a) a draw needle for drawing whole blood from a donor; b) an input buffer in fluid communication with said draw needle via a first conduit; c) a second conduit for fluidly coupling anticoagulant fluid to said first conduit for mixing with said drawn blood; d) a separator for separating drawn blood into at least two fractional components, said separator having an input port and an output port; e) a third conduit for fluidly coupling the input buffer to the input port; f) a component container; g) a fourth conduit for fluidly coupling the output port to said container; h) an output buffer; i) a fifth conduit in fluid communication with said output buffer and said fourth conduit; j) a sixth conduit in fluid communication between said output buffer and said third conduit; k) a return needle in fluid communication with one or more of said output buffer or said component container for transferring fluid therefrom to said donor; and l) a seventh conduit for fluidly coupling said output buffer to a source of physiological solution. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. Apparatus comprising:
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a) a draw needle for drawing whole blood from a donor; b) an input buffer in fluid communication with said draw needle via a first conduit; c) a second conduit for fluidly coupling anticoagulant fluid to said first conduit for mixing with said drawn blood; d) a separator for separating drawn blood into at least two fractional components, said separator having an input port and an output port; e) a third conduit for fluidly coupling the input buffer to the input port; f) a component container; g) a fourth conduit for fluidly coupling the output port to said container; h) an output buffer; i) a fifth conduit in fluid communication with said output buffer and said fourth conduit; j) a sixth conduit in fluid communication between said output buffer and said third conduit; k) a return needle in fluid communication with one or more of said output buffer or said component container for transferring fluid therefrom to said donor via a seventh conduit; l) a seventh conduit for fluidly coupling said output buffer to a source of physiological solution; m) draw pump means coupled to said first conduit for transferring drawn blood from said draw needle to said input buffer; n) A.C. pump means coupled to said second conduit for transferring anticoagulant from an anticoagulant source to mix with said drawn blood; o) transfer pump means coupled to said third conduit for transferring in a first direction fluid from said input buffer to said input port and in a second direction fluid from said component container to said input port or to said output buffer; and p) return pump means coupled to said seventh conduit for transferring fluid from one or more of said output buffer or said component container to said donor. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for separating whole blood collected from a donor via a draw needle into constituent components and returning some of the separated components via a return needle in a centrifugal separation system comprised of a centrifuge having a stator and a rotatable bowl with the stator having an input port fluidly coupled on one side to an input reservoir and on another side to the interior of the bowl and an output port fluidly coupled on one side to the interior of the bowl and on another side to an output reservoir and a component container;
- comprising the steps of;
a) priming the system by transferring a volume of physiological solution from a solution bag into the output reservoir and transferring a volume of anticoagulant from an anticoagulant bag into the input reservoir and pumping some of the solution in the output reservoir to the return needle by a return pump; b) drawing blood from the donor via the draw needle and mixing the blood with anticoagulant and transferring the anticoagulant drawn blood into the input reservoir by a draw pump; c) transferring the physiological fluid from the output reservoir by the return pump into the donor via the return phlebotomy needle; and d) transferring the anticoagulated whole blood from the input reservoir to the input port of the bowl by a transfer pump causing some blood component(s) to be separated in the bowl and to exit the bowl and enter a component container for harvesting while other separated component(s) are transferred to said output reservoir; and e) transferring fluid from the output reservoir to the donor via the return phlebotomy needle. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
- comprising the steps of;
Specification