Shuttle pump with controlled geometry

US8382447B2 · kind B2 · utility

Assignees

• Baxter International Inc. · US
• Baxter Healthcare SA · CH

Inventors

• Zhengyan Wang · Antioch, US
• Surya Pratap Rai · Gurnee, US
• Ronald H. Spang, Jr. · Kenosha, US
• Peter M. Bojan · Grayslake, US
• David G. Zabel · Hoffman Estates, US
• Joseph Allen Carmichael · Pleasant Prairie, US
• Ralph H. LaBedz · McHenry, US

Key dates

• Filing date: Dec 31, 2009
• Grant date: Feb 26, 2013
• Expiry date: Feb 5, 2031

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04B43/12
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An infusion pump uses an improved shuttle mechanism to more reliably pump liquids in low volumes for medical and other purposes. The improved shuttle uses linear translation and wider, symmetric jaws to grasp infusate tubing and pump liquid infusate through the tubing. Adjustment of the linear motion allows a user to also adjust a pumping volume of the infusion pump. Other shuttles with wider jaws may also pump infusate using a rotary motion. In addition, more than one shuttle, such as two or three shuttles, may be used to approximate continuous pumping. A series of several smaller linear shuttles with sequential actuation may be used as a linear peristaltic pump for general peristaltic pump applications.