WEARABLE ULTRAFILTRATION DEVICE
First Claim
Patent Images
1. A completely wearable ultrafiltration device comprising:
- a shuttle pump adapted to pump blood from a patient'"'"'s blood vessel;
an ultrafiltration filter that receives blood from the shuttle pump, the ultrafiltration filter comprising a plurality of hollow fibers each having semi porous walls such that excess fluid from the blood moves through the semi porous walls at a rate determined by a magnitude of pressure within the plurality of hollow fibers, the magnitude of pressure being created by the shuttle pump, the completely wearable ultrafiltration device constructed and configured to operate and remove excess fluid while in various three-dimensional orientations while being worn on a portion of a patient'"'"'s body; and
a fluid bag that receives the removed excess fluid as the excess fluid drains from the ultrafiltration filter.
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Abstract
An ultrafiltration device adapted to be worn on a portion of the body of a patient includes a blood inlet tube leading from a first blood vessel, a blood pump, an anticoagulant reservoir for infusing anticoagulants into the blood, a blood filter including a substrate through which the blood is circulated and filtered, a fluid bag for storing the excess fluid and a blood outlet tube leading to a second blood vessel.
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Citations
14 Claims
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1. A completely wearable ultrafiltration device comprising:
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a shuttle pump adapted to pump blood from a patient'"'"'s blood vessel; an ultrafiltration filter that receives blood from the shuttle pump, the ultrafiltration filter comprising a plurality of hollow fibers each having semi porous walls such that excess fluid from the blood moves through the semi porous walls at a rate determined by a magnitude of pressure within the plurality of hollow fibers, the magnitude of pressure being created by the shuttle pump, the completely wearable ultrafiltration device constructed and configured to operate and remove excess fluid while in various three-dimensional orientations while being worn on a portion of a patient'"'"'s body; and a fluid bag that receives the removed excess fluid as the excess fluid drains from the ultrafiltration filter. - View Dependent Claims (2, 3, 4, 5)
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6. An ultrafiltration device comprising:
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a blood inlet tube adapted to receive blood from a patient'"'"'s body; a shuttle pump that receives blood from the blood inlet tube and pumps the received blood; a blood ultrafiltration filter that receives blood forced from the shuttle pump, the blood ultrafiltration filter constructed and configured to filter excess fluid from the blood via pores at a rate determined by a pressure within in the ultrafiltration filter and while in various three-dimensional non-stationary orientations; and a fluid bag in fluid connection with the blood ultrafiltration filter, the fluid bag adapted to collect the excess fluid filtered from the blood; the ultrafiltration device sized to be completely worn on a portion of the patient'"'"'s body. - View Dependent Claims (7, 8, 9, 10)
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11. A method of removing ultrafiltrate from a patient'"'"'s blood comprising:
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obtaining blood from a patient'"'"'s vessel through a blood inlet tube; pumping the blood with a shuttle pump into hollow fibers of a blood filter, the hollow fibers having semiporous walls; filtering excess fluid from the blood, without a dialysate fluid, through pores in the semiporous walls; directing the filtered excess fluid from the blood filter into a fluid bag while the shuttle pump, the blood filter and the fluid bag are together oriented in various non-stationary three-dimensional orientations. - View Dependent Claims (12, 13, 14)
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Specification