Fluid pumping systems, devices and methods

US8292594B2 · kind B2 · utility

Assignee

• DEKA Products Limited Parternship · US

Inventors

• Brian D. Tracey · Litchfield, US
• Larry B. Gray · Merrimack, US
• Jason A. Demers · Manchester, US
• James D. Dale · Nashua, US
• N. Christopher Perry · Manchester, US
• Michael J. Wilt · Walnut Creek, US
• Scott A. Leonard · Bedford, US

Key dates

• Filing date: Apr 13, 2007
• Grant date: Oct 23, 2012
• Expiry date: Mar 6, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02A90/10
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Certain types of reciprocating positive-displacement pumps (which may be referred to hereinafter as “pods,” “pump pods,” or “pod pumps”) are used to pump fluids, such as a biological fluid (e.g., blood or peritoneal fluid), a therapeutic fluid (e.g., a medication solution), or a surfactant fluid. The pumps may be configured specifically to impart low shear forces and low turbulence on the fluid as the fluid is pumped from an inlet to an outlet. Such pumps may be particularly useful in pumping fluids that may be damaged by such shear forces (e.g., blood, and particularly heated blood, which is prone to hemolysis) or turbulence (e.g., surfactants or other fluids that may foam or otherwise be damaged or become unstable in the presence of turbulence).