HEMODIALYSIS SYSTEM WITH CASSETTE-BASED BLOOD AND DIALYSATE PUMPING

摘要

A hemodialysis system includes: (i) a dialyzer; (ii) a dialysate source; a dialysate pump; (iii) a dialysate cassette operatively connected to the dialysate pump such that the dialysate pump can pump dialysate through the dialysate cassette when the dialysate cassette is in fluid communication with the dialysate source, the dialysate cassette in fluid communication with the dialyzer; (iv) a blood pump; and (v) a blood cassette separate from the dialysate cassette, the blood cassette operatively connected to the blood pump such that the blood pump can pump blood through the blood cassette, the blood cassette including a housing, the housing including a from-patient tube connector, a to-patient tube connector, a saline/priming tube connnector, a to-dialyzer tube connector, a from-dialyzer tube connector, and an internal air separation chamber.

主权项

1. A hemodialysis system comprising:
a dialyzer; a fresh dialysate pump actuator; a used dialysate pump actuator; a dialysate cassette including at least one flexible membrane, the dialysate cassette in fluid communication with the dialyzer and structured and arranged to operate with (i) the fresh dialysate pump actuator to pump fresh dialysate fluid through the dialysate cassette, and (ii) the used dialysate pump actuator to pump used dialysate fluid through the dialysate cassette; a peristaltic blood pump actuator; at least one blood pressure sensor; and a blood disposable separate from the dialysate cassette, the blood disposable operatively connected to the peristaltic blood pump actuator to pump blood through the blood disposable, the blood disposable including at least one blood pressure sensing area positioned and arranged for operable engagement with the at least one blood pressure sensor.