Portable hemodialysis machine and disposable cartridge
First Claim
Patent Images
1. A disposable cartridge for hemodialysis comprising:
- a blood flow path;
a dialysate flow path, isolated from the blood flow path;
a dialyzer in said blood flow path and said dialysate flow path, said dialyzer including a semipermeable membrane that separates said blood flow path and said dialysate flow path;
a first pump actuator connected to said dialysate flow path upflow from said dialyzer which pumps dialysate through said dialysate flow path;
a second pump actuator connected to said dialysate flow path downflow from said dialyzer which pumps dialysate through said dialysate flow path;
a flow sensor connected to said dialysate flow path which measures the fluid flow within said dialysate flow path;
a pressure sensor connected to said dialysate flow path which measures the pressure within said dialysate flow path; and
cartridge electrical terminals electrically connected to said disposable cartridge'"'"'s flow sensor and said disposable cartridge'"'"'s pressure sensor, said cartridge electrical terminals located upon the exterior of the disposable cartridge so as to engage and electrically connect, or disengage and electrically disconnect, to electrical terminals of a reusable dialysis machine.
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Abstract
A portable hemodialysis system is provided including a disposable cartridge and a reused dialysis machine. The disposable cartridge includes a dialyzer, and a dialysate flow path and a blood flow path which flow in opposing directions through the dialyzer. The disposable cartridge includes pressure and fluid flow sensors for measuring the pressure and fluid flow in the dialysate flow path and blood flow path. In addition, the disposable cartridge possesses pump actuators (but not pump motors) for pumping dialysate and blood through their respective flow paths. Preferably, the disposable cartridge includes a filter for removing waste products from dialysate.
98 Citations
8 Claims
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1. A disposable cartridge for hemodialysis comprising:
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a blood flow path; a dialysate flow path, isolated from the blood flow path; a dialyzer in said blood flow path and said dialysate flow path, said dialyzer including a semipermeable membrane that separates said blood flow path and said dialysate flow path; a first pump actuator connected to said dialysate flow path upflow from said dialyzer which pumps dialysate through said dialysate flow path; a second pump actuator connected to said dialysate flow path downflow from said dialyzer which pumps dialysate through said dialysate flow path; a flow sensor connected to said dialysate flow path which measures the fluid flow within said dialysate flow path; a pressure sensor connected to said dialysate flow path which measures the pressure within said dialysate flow path; and cartridge electrical terminals electrically connected to said disposable cartridge'"'"'s flow sensor and said disposable cartridge'"'"'s pressure sensor, said cartridge electrical terminals located upon the exterior of the disposable cartridge so as to engage and electrically connect, or disengage and electrically disconnect, to electrical terminals of a reusable dialysis machine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification