Peristaltic pump with linear pump roller positioning mechanism

• US 5,462,417 A
• Filed: 12/22/1993
• Issued: 10/31/1995
• Est. Priority Date: 12/22/1993
• Status: Expired due to Fees

• Current Assignee: Baxter International Inc.
• Original Assignee: Baxter International Inc.
• Inventors: Chapman, Arthur S.
• Primary Examiner(s): Bertsch, Richard A.
• Assistant Examiner(s): Korytnyk, Peter G.
• Application Number:
  US08/175,204
• Time in Patent Office: 678 Days
• Field of Search: 417/477 F, 417/477 G, 417/447 B, 417/477 R, 417/474, 417/476, 417/477.8, 417/477.7, 417/477.3, 417/477.1
• US Class Current: 417/477.7
• CPC Class Codes: F02B 2075/025 two
• CPC Class Codes: F04B 43/1276 Means for pushing the rollers against the tubular flexible member

Abstract

A peristaltic pump has a pump rotor rotatable about an axis. The pump rotor carries a pump roller. An actuating rod extends along the axis of rotation. The rod has a distal end and a proximal end. An actuator mechanism is coupled to the proximal rod end for advancing the rod along the axis of rotation in a forward direction toward the pump rotor and in a rearward direction away from the pump rotor. A linkage mechanism is coupled to the distal rod end for converting advancement of the actuating rod along the axis of rotation in response to the actuator mechanism into movement of the pump roller radially of the axis of rotation between a retracted position free of contact with pump tubing and an extended position making operative contact with pump tubing.

Claims