The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 29, 2011
Filed:
Oct. 13, 2010
Don Busby, Tampa, FL (US);
Peter Hopping, Lutz, FL (US);
Robert Childers, New Port Richy, FL (US);
Rick Kienman, Tampa, FL (US);
Ian Richardson, Clearwater, FL (US);
Don Busby, Tampa, FL (US);
Peter Hopping, Lutz, FL (US);
Robert Childers, New Port Richy, FL (US);
Rick Kienman, Tampa, FL (US);
Ian Richardson, Clearwater, FL (US);
Baxter International Inc., Deerfield, IL (US);
Abstract
A peritoneal dialysis system includes a hardware unit including a piston having a contact surface and a stepper motor configured to move the piston; and a disposable unit received by the hardware unit, the disposable unit including a moveable membrane operable with the contact surface of the piston, the piston moveable towards and away from the disposable unit, wherein (i) the piston and the membrane are positioned relative to each other and (ii) the hardware unit is configured to apply a negative pressure to the moveable membrane of the disposable unit so that the negative pressure causes the moveable membrane to contact and conform to a shape of the contact surface and to follow the piston as the piston is moved away from the disposable unit by the stepper motor, and wherein the shape-contacted membrane moves with the piston as the piston is moved into the disposable unit by the stepper motor.