Peristaltic pump

US11348674B2 · kind B2 · utility

Assignee

• DEKA Products Limited Parternship · US

Inventors

• Dean Kamen · Bedford, US
• John M. Kerwin · Manchester, US
• Colin H. Murphy · Cambridge, US
• Christopher C. Langenfeld · Nashua, US
• Michael J. Slate · Merrimack, US
• Michael S. Place · Manchester, US
• Larry B. Gray · Merrimack, US

Key dates

• Filing date: Apr 19, 2019
• Grant date: May 31, 2022
• Expiry date: Apr 7, 2040

Classification

• Technology area (CPC G): Physics
• CPC primary: G06T2207/20104
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A peristaltic pump and related-method are disclosed that includes a cam shaft having a plunger cam, a plunger-cam follower that engages the plunger cam of the cam shaft, a tube receiver, a spring, a plunger, a position sensor, and a processor. The tube receiver receives a tube. The spring provides a bias. The plunger is biased toward the tube by the spring and the plunger is to the plunger-cam follower, such that expansion of the plunger cam along a radial angle intersecting the plunger-cam follower as the cam shaft rotates actuates the plunger away from the tube. The position sensor determines a position of the plunger and the processor estimates fluid flow within the tube utilizing the position of the plunger.