Separable hemodialysis system connected by a movable arm
First Claim
1. A hemodialysis system which comprises:
- a dialysate handling unit for providing hemodialysis solution to the patient, comprising a hemodialysis solution pump and hemodialysis solution safety monitoring means;
a blood handling unit which comprises a membrane dialyzer holder, a blood pump, and means for safely handling blood as it is pumped from the patient, through a membrane dialyzer, and back to the patient;
a first conduit for conveying fresh dialysate from said dialysate handling unit to the blood handling unit, and a second conduit for conveying spent hemodialysis solution away from said blood handling unit;
said dialysate handling unit and said blood handling unit being connected by a movable arm to permit said blood handling unit to be positioned in a plurality of variable vertical and horizontal positions and distances relative to the dialysate handling unit, whereby said dialysate handling unit and said blood handling unit are separate from and movable relative to each other while hemodialysis is being performed.
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Accused Products
Abstract
A hemodialysis system includes the following: a dialysate handling unit for providing dialysate to the patient. This unit includes a hemodialysis solution pump and apparatus for monitoring hemodialysis solution safety such as a conductivity tester. Additionally a solution heater and appropriate conventional controls can be provided, as well as a proportioning system, an ultrafiltration measuring unit, and other known apparatus for handling dialysis solution. A blood handling unit is also provided, which includes a membrane dialyzer and holder, a blood pump, blood flow tubing and safety equipment for monitoring blood flow as it is pumped through the arterial/venous blood conduit set tubing from the patient, through the membrane dialyzer, and back to the patient. A first conduit is present for conveying fresh dialysate from the dialysate handling unit to the blood handling unit (or directly to the membrane dialyzer). A second conduit is provided for conveying spent hemodialysis solution away from the blood handling unit. By this invention, the dialysate handling unit and the blood handling unit are connected by a movable arm and are separate from and movable relative to each other while the hemodialysis is being performed. Significant economic and functional advantages can be achieved.
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Citations
24 Claims
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1. A hemodialysis system which comprises:
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a dialysate handling unit for providing hemodialysis solution to the patient, comprising a hemodialysis solution pump and hemodialysis solution safety monitoring means; a blood handling unit which comprises a membrane dialyzer holder, a blood pump, and means for safely handling blood as it is pumped from the patient, through a membrane dialyzer, and back to the patient; a first conduit for conveying fresh dialysate from said dialysate handling unit to the blood handling unit, and a second conduit for conveying spent hemodialysis solution away from said blood handling unit; said dialysate handling unit and said blood handling unit being connected by a movable arm to permit said blood handling unit to be positioned in a plurality of variable vertical and horizontal positions and distances relative to the dialysate handling unit, whereby said dialysate handling unit and said blood handling unit are separate from and movable relative to each other while hemodialysis is being performed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A hemodialysis system which comprises:
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a dialysate handling unit for providing hemodialysis solution to the patient, comprising a hemodialysis solution pump and hemodialysis solution safety monitoring means; a blood handling unit which comprises a membrane dialyzer holder, a blood pump, an apparatus for safely handling blood as it is pumped from the patient, through a membrane dialyzer, and back to the patient, in which said blood pump comprises a rotor and a U-shaped track for receiving blood tubing which is part of said apparatus for safely handling blood, said U-shaped track being in the form of an upright U; a first conduit for conveying fresh dialysate from said dialysate handling unit to the blood handling unit, and a second conduit for conveying spent hemodialysis solution away from said blood handling unit; said dialysate handling unit and said blood handling unit being connected by a movable arm to permit said blood handling unit to be positioned in a plurality of variable positions and distances relative to the dialysate handling unit, whereby said dialysate handling unit and said blood handling unit are separate from and movable relative to each other while hemodialysis is being performed. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A hemodialysis system which comprises:
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a dialysate handling unit for providing dialysate to the patient, comprising a hemodialysis solution pump and hemodialysis solution safety monitoring means; a blood handling unit which comprises a membrane dialyzer, a blood pump, and means for safely handling blood as it is pumped from the patient, through said membrane dialyzer, and back to the patient, said blood pump comprising a rotor and a U-shaped track containing a portion of blood tubing as part of said means for safely handling blood, said U-shaped track being in the form of an upright U, one end of the blood tubing in said U-shaped track connecting directly to said membrane dialyzer, the other end of the blood tubing in said track being directly connected to a bubble trap, said bubble trap being also connected to a blood conduit which communicates with a connector for an access device to the patient; a first conduit for conveying fresh dialysate from said dialysate handling unit to the blood handling unit, and a second conduit for conveying spent dialysate away from the blood handling unit; said dialysate handling unit and said blood handling unit being connected by a movable arm to permit said blood handling unit to be positioned in a plurality of variable positions and distances relative to the dialysate handling unit, whereby said dialysate handling unit and said blood handling unit are separate from and movable relative to each other while hemodialysis is being performed, said blood conduit being shorter than said first conduit. - View Dependent Claims (16, 17, 18, 19)
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20. A hemodialysis system which comprises:
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a blood handling unit comprising a membrane dialyzer holder and apparatus for safely handling blood as it passes from the patient, through a membrane dialyzer in said holder, and back to the patient; a dialyzate handling unit for providing hemodialysis solution to said membrane dialyzer; a first conduit for conveying fresh dialyzate from said dialyzate handling unit to the blood handling unit, and a second conduit for conveying spent dialyzate away from the blood handling unit; said dialyzate handling unit and said blood handling unit being connected by a movable arm to permit said blood handling unit to be positioned in a plurality of variable vertical and horizontal positions and distances relative to the dialyzate handling unit, whereby the dialyzate handling unit and said blood handling unit are separate from and movable relative to each other while hemodialysis is being performed. - View Dependent Claims (21, 22, 23, 24)
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Specification