Peristaltic pump comprising members for locating a tube

• US 7,467,932 B2
• Filed: 06/14/2005
• Issued: 12/23/2008
• Est. Priority Date: 06/30/2004
• Status: Active Grant

• Current Assignee: EMD Millipore Corporation (Merck & Co., Inc.)
• Original Assignee: Millipore Corporation
• Inventors: Olivier, Stephane, Clauss, Christian, Schann, Christian
• Primary Examiner(s): Kramer; Devon C
• Assistant Examiner(s): COMLEY, ALEXANDER BRYANT
• Application Number:
  US11/152,517
• Publication Number:
  US 20060002805A1
• Time in Patent Office: 1,288 Days
• Field of Search: 417/477.9, 417/477.8, 417/477.3, 417/474, 417/475, 417/476, 417/477.1, 417/477.11, 417/477.13, 417/477.2, 417/477.6
• US Class Current: 417/477.1
• CPC Class Codes: F04B 43/1284 Means for pushing the backing-plate against the tubular flexible member

Abstract

The peristaltic pump (1) comprises a rotor with rollers, a mobile jaw having an open position and a closed position, and further comprises, on each side of the rotor, a locating member for said tube adapted to receive it when it is pressed in and to allow it to slide in the longitudinal direction in which the locating member extends, said locating members being disposed in a line between the rotor and the mobile jaw in the open position.

Claims

1. A peristaltic pump comprising a rotor incorporating rollers, a mobile jaw having an open position, in which it is moved away from the rotor so that a tube on which said pump must act may be placed between the mobile jaw and the rotor, and a closed position, in which the mobile jaw is moved toward the rotor so that said tube is engaged between a curved bearing surface of the mobile jaw and at least one roller of the rotor,

the pump further comprising a protective cap mounted to the pump and adapted to cover the mobile jaw and the rotor incorporating the rollers, in the open and closed position of the mobile jaw, the cap having a groove formed through the cap adapted to receive the tube when it is pressed in from outside the cap, the groove having a locating member arranged on each side of the rotor, each locating member being formed of a depression delimited by a bottom and two facing lateral walls, each of the lateral walls having a retaining boss, the boss retaining the tube in the groove and allowing the tube to slide in the longitudinal direction in which the tube extends, and the tube in the groove being disposed in a line between the rotor and the mobile jaw in the open position.

2. The peristaltic pump according to claim 1 wherein the protective cap is rigidly connected to the mobile jaw.

3. The peristaltic pump according to claim 1 wherein the the groove is a rectilinear groove joining the locating members.

4. The peristaltic pump according to claim 1 wherein the rotor includes a flat and the pump further comprises a means for positioning the flat along the line between the rotor and the mobile jaw when in the open position.

5. The peristaltic pump according to claim 1, further comprising a drive shaft adapted to drive the mobile jaw from its open to its closed position and from its closed to its open position and said drive shaft is connected by an irreversible gear to a cam cooperating with the mobile jaw.

6. The peristaltic pump according to claim 1 further comprising a drive shaft adapted to drive the mobile jaw from its open to its closed position and from its closed to its open position and said drive shaft is adapted to place the mobile jaw in a position in which it is free to be separated from the pump when in the open position.

7. The peristaltic pump according to claim 1 further comprising a means for clamping a web of the tube with a plurality of passages connected by the web.

8. The peristaltic pump of claim 1 further comprising the mobile jaw has a round hole formed through the thickness of the mobile jaw, the round hole being coupled to an oblong hole formed through the thickness of the mobile jaw and the oblong hole has a shoulder formed in the thickness of the mobile jaw, the pump having an eccentric finger mounted adjacent the rotor and in line with the round hole of the mobile jaw when in the open position so as to allow for removal of the protective cap and the eccentric finger being retained by the shoulder of the oblong hole when the pump is in the closed position so as to prevent removal of the protective cap.

9. The peristaltic pump of claim 1 further comprising the mobile jaw has a round hole formed through the thickness of the mobile jaw, the round hole being coupled to an oblong hole formed through the thickness of the mobile jaw and the oblong hole has a shoulder formed substantially halfway through the thickness of the mobile jaw, the pump having an eccentric finger mounted adjacent the rotor and in line with the round hole of the mobile jaw when in the open position so as to allow for removal of the protective cap and the eccentric finger being retained by the shoulder of the oblong hole when the pump is in the closed position so as to prevent removal of the protective cap.