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:
Jan. 21, 2020
Filed:
Feb. 28, 2017
Deka Products Limited Partnership, Manchester, NH (US);
Michael J. Wilt, Windham, NH (US);
Dirk A. van der Merwe, Canterbury, NH (US);
James D. Dale, Milton, FL (US);
Brian D. Tracey, Litchfield, NH (US);
Kevin L. Grant, Litchfield, NH (US);
Jason A. Demers, Manchester, NH (US);
Catharine N. Flynn, Manchester, NH (US);
DEKA Products Limited Partnership, Manchester, NH (US);
Abstract
A hemodialysis apparatus comprising diaphragm pumps for the movement of both dialysate and blood, and under the control of a controller, is capable of detecting blood flow conditions that give rise to an alarm and implement procedures to adjust, pause, or halt the pumping of dialysate and/or blood. The controller can direct the application of a time-varying pressure to fluid in the control chamber of a blood pump, and monitor the resulting pressure waveform during a fill stroke of the blood pump. A deviation of the measured pressure variation from an expected value can give rise to an alert to a user and to the initiation of an adjustment, pause, or cessation of the dialysate pump's activity.