Peritoneal dialysis machine
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United States of America Patent
Stats
-
Dec 6, 2011
Grant Date -
Nov 12, 2009
app pub date -
Jul 21, 2009
filing date -
Oct 28, 2003
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A peritoneal dialysis machine including: a housing; a mechanically actuated piston head extending from a pump actuator housed by the housing, the mechanically actuated piston head positioned to extend towards and away from a fluid pumping cassette, the fluid pumping cassette coupled operably to the housing such that a flexible membrane of the fluid pumping cassette faces the piston head; a pressure sensor positioned by the housing adjacent to the mechanically actuated piston head so as to sense a pressure of a medical fluid moved by the mechanically actuated piston head within the fluid pumping cassette; and a vacuum chamber formed about the mechanically actuated piston head, the vacuum chamber holding a vacuum that sucks the flexible membrane of the fluid pumping cassette onto the mechanically actuated piston head as the mechanically actuated piston head extends away from the fluid pumping cassette.
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Family
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