摘要:
A dialysis system includes: an enclosure; a dialysate pump carried by the enclosure and arranged to pump dialysate to a patient or dialyzer; at least one container connected fluidly to the dialysate pump; a load cell positioned to weigh dialysate located within the container; an accelerometer positioned and arranged to detect a force imparted on at least one of the enclosure and the container; and electronics configured to receive a first signal from the load cell and a second signal from the accelerometer and process the first and second signals so as to determine if an abnormality sensed by the load cell is a system error or a mechanical interference.
摘要:
A hemodialysis system including (i) a dialyzer; (ii) a blood circuit including a blood pump in fluid communication with the dialyzer; (iii) a dialysate circuit including a dialysate circulation pump in fluid communication with the dialyzer, at least a portion of the dialysate circuit incorporated into a disposable dialysate cassette; (iv) a sorbent cartridge for cleaning used dialysate flowing in the dialysate circuit; (v) a reservoir holding an initial supply of dialysate; (vi) a reservoir pump in fluid communication with the dialysate circuit and the reservoir; (vii) a supply of infusate; and (viii) an infusate pump in fluid communication with the dialysate circuit and the supply of infusate.
摘要:
A method for priming a hemodialysis treatment includes (i) providing a sorbent cartridge for cleaning spent dialysate fluid returning from a dialyzer; (ii) preparing a batch of dialysate in a quantity commensurate with being recycled through the sorbent cartridge multiple times; (iii) priming a dialysate circuit in fluid communication with the dialyzer using the batch of dialysate; and (iv) reversing a blood pump at least one time to prime a blood circuit in fluid communication with the dialyzer using a biologically safe fluid other than dialysate.
摘要:
A dialysis system includes a dialysis fluid cassette-based membrane blood pump; a dialyzer in fluid communication with the blood pump; first and second dialysis fluid cassette-based balance chambers each having (i) a fresh dialysis fluid compartment in fluid communication with the dialyzer and (ii) a spent dialysis fluid compartment; a dialysis fluid cassette-based fresh dialysis fluid membrane pump in fluid communication with the fresh dialysis fluid compartments of the first and second balance chambers; a dialysis fluid cassette-based spent dialysis fluid membrane pump in fluid communication with the dialyzer and the spent dialysis fluid compartments of the first and second balance chambers; and which is configured to receive a data transfer including a prescription entry for the system.
摘要:
A dialysis system includes a fresh dialysis fluid membrane pump; a spent dialysis fluid membrane pump; a first balance chamber having a fresh dialysis fluid compartment connected fluidly to the fresh dialysis fluid membrane pump and a spent dialysis fluid compartment connected fluidly to the spent dialysis fluid membrane pump; a second balance chamber having a fresh dialysis fluid compartment connected fluidly to the fresh dialysis fluid membrane pump and a spent dialysis fluid compartment connected fluidly to the spent dialysis fluid membrane pump; and a dialysis fluid cassette, wherein at least one of the fresh dialysis fluid membrane pump, the spent dialysis fluid membrane pump, the first balance chamber and the second balance chamber includes a fluid receiving portion provided in the dialysis fluid cassette.
摘要:
A dialysis machine includes a blood circuit, a dialysate circuit, and a dialyzer placed in communication with the blood circuit and the dialysate circuit. The dialysis machine includes a priming sequence in which dialysate is used to prime a first portion of the dialysate circuit and a physiologically compatible solution, other than dialysate, is used to prime a second portion of the dialysate circuit, the dialyzer and the blood circuit.
摘要:
A dialysis system including a dialysis machine including a blood pump actuator, dialysate pump actuator, a blood valve actuator and a dialysate valve actuator; and a disposable cassette operable with the dialysis machine, the disposable cassette including: (i) a housing, (ii) a dialysate pump portion of the housing configured to operate with the dialysate pump actuator, (iii) a blood valve portion of the housing configured to operate with the blood valve actuator, (iv) a dialysate valve portion of the housing configured to operate with the dialysate valve actuator, (v) a dialyzer supported by the housing, the dialyzer including a dialysate inlet and a dialysate outlet, (vi) a first dialysate connection extending externally from the housing to the dialyzer inlet, and (vii) a second dialysate connection extending externally from the housing to the dialyzer outlet.
摘要:
A hemodialysis system includes (i) blood tubing; (ii) a peristaltic blood pump contacting the blood tubing to pump blood through the blood tubing; (iii) a dialyzer in fluid communication with the blood tubing; (iv) first and second peristaltic dialysate pumps; (v) a dialysate heater; (vi) a plurality of pinch valves; and (vii) a cassette including a rigid structure, a heating portion, first and second dialysate pumping tubes, and a plurality of incoming tubes, the rigid structure when the cassette is mounted for operation orienting (a) the heating portion adjacent to the dialysate heater so that dialysate can be heated by the dialysate heater, (b) the first and second dialysate pumping tubes adjacent to the first and second peristaltic dialysate pumps, and (c) the plurality of incoming tubes adjacent to the plurality of pinch valves to enable the tubes to be individually closed by the pinch valves.
摘要:
A multiple chamber medical fluid bag includes: (i) a flexible enclosure; (ii) a first fluid chamber formed in the enclosure; (iii) a second fluid chamber formed in the enclosure; (iv) the first fluid chamber and the second fluid chamber separated by a frangible seal; and (v) an access port connected to the enclosure, the port imbedded into the enclosure so as to completely surround the access port, the enclosure further configured such that the frangible seal is broken to uncover the access port.
摘要:
A dialysis machine includes a dialysis instrument having a pump actuator and first and second valve actuators, and a disposable cassette operable with the dialysis instrument, the disposable cassette including a pump portion operable with the pump actuator, first and second valve chambers operable with the first and second valve actuators, the first and second valve chambers communicating fluidly with each other, at least the first valve chamber communicating fluidly with a compliance chamber, the compliance chamber negating a first backpressure due to a pneumatic closing pressure used to close the first valve chamber to help to ensure the pneumatic pressure applied to the first valve chamber will close the first valve chamber against a second backpressure from an existing closure of the second valve chamber.