초록 ▼

Systems and methods for peritoneal dialysis establish flow communication between a patient\s peritoneal cavity and a drain through a pump chamber having generally vertically spaced upper and lower regions andt a diaphragm. The systems and methods operate the pump chamber, with the upper and lower re

Systems and methods for peritoneal dialysis establish flow communication between a patient\s peritoneal cavity and a drain through a pump chamber having generally vertically spaced upper and lower regions andt a diaphragm. The systems and methods operate the pump chamber, with the upper and lower regions oriented generally vertically, by applying fluid pressure to the diaphragm. The systems and methods direct liquid to the patient\s peritoneal cavity only from the lower region of the pump chamber. In this way, the improved systems and methods collect air in the upper region of the vertically oriented pump chamber, while isolating the patient\s peritoneal cavity from air in the pump chamber.

대표청구항 ▼

A method for performing peritoneal dialysis comprising steps of establishing flow communication with a patient\s peritoneal cavity through a pump chamber having spaced ends, the pump chamber being oriented for use in a generally vertical plane so that one end which comprises a non-critical gas-liqui

A method for performing peritoneal dialysis comprising steps of establishing flow communication with a patient\s peritoneal cavity through a pump chamber having spaced ends, the pump chamber being oriented for use in a generally vertical plane so that one end which comprises a non-critical gas-liquid extracorporeal circuit end is spaced generally above the other end which comprises a critical liquid patient circuit end to form within the pump chamber an upper noncritical gas-liquid extracorporeal circuit region for pumping fluid and a lower critical liquid patient circuit region for pumping liquid and a diaphragm on the pump chamber, operating the pump chamber with the upper noncritical gas-liquid extracorporeal circuit region and the lower critical liquid patient circuit region oriented generally vertically, by applying fluid pressure to the diaphragm, pumping liquid to the patient\s peritoneal cavity only from the lower critical liquid patient circuit region of the pump chamber in an infusion direction through the pump chamber to deliver liquid dialysate to the patient, and directing dialysate in a direction reverse to the infusion direction through the pump chamber and from the upper non-critical gas-liquid extracorporeal circuit region of the pump chamber in an outgoing flow to a destination outside the patient\s peritoneal cavity so that the outgoing flow of dialysate carries gas from the upper circuit region of the pump chamber.