Peristaltic pump assembly with cassette and mounting pin arrangement

• US 7,934,912 B2
• Filed: 09/27/2007
• Issued: 05/03/2011
• Est. Priority Date: 09/27/2007
• Status: Expired due to Fees

• Current Assignee: Curlin Medical (Moog Incorporated)
• Original Assignee: Curlin Medical (Moog Incorporated)
• Inventors: Voltenburg, Robert R. Jr., Thompson, Loren M.
• Primary Examiner(s): Kramer; Devon C
• Assistant Examiner(s): ZOLLINGER, NATHAN C
• Application Number:
  US11/862,302
• Publication Number:
  US 20090087326A1
• Time in Patent Office: 1,314 Days
• Field of Search: 417/477.2, 417/474, 417/475, 417/476, 417/477.1, 417/477.3, 417/477.4, 417/477.5, 417/477.6, 417/477.7, 417/477.8, 417/477.9, 417/477.11, 417/477.12, 417/477.13, 417/477.14, 417/478
• US Class Current: 417/477.2
• CPC Class Codes: A61M 2205/12 with interchangeable cassettes forming partially or totally the fluid circuit
• CPC Class Codes: A61M 2205/121 interface between cassette and base
• CPC Class Codes: A61M 2205/581 by audible feedback
• CPC Class Codes: A61M 2205/6045 having complementary physical shapes for indexing or registration purposes
• CPC Class Codes: A61M 5/14232 Roller pumps
• CPC Class Codes: F04B 43/1253 by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing
• CPC Class Codes: F04B 43/1284 Means for pushing the backing-plate against the tubular flexible member
• CPC Class Codes: Y10T 29/4924 Scroll or peristaltic type

Abstract

A peristaltic pump assembly includes a pump body including a mounting pin coupled thereto. A removable cassette is slidably received on the mounting pin and is secured to the pump body via a retaining feature. The mounting pin is also configured to allow the removable cassette to rotate into and/or out of an installed position, or to position(s) therebetween.

Claims

1. A peristaltic pump assembly, comprising:

a pump body;

a mounting pin coupled to the pump body; and

a removable cassette having a tube inlet and a tube outlet, said removable cassette slidably received on the mounting pin and secured to the pump body via a retaining feature, wherein the removable cassette is rotatable about the mounting pin;

wherein the mounting pin is configured to allow the removable cassette to rotate about the mounting pin into an installed position, out of an installed position, or to a position therebetween, said assembly configured to allow movement of the mounting pin relative to the pump body along a linear path that is perpendicular to a straight line between the tube inlet and the tube outlet when the cassette is in the installed position.

2. The peristaltic pump assembly as defined in claim 1 wherein the pump body is configured to guide the cassette as the cassette is rotated into the installed position, out of the installed position, or to the position therebetween.

3. The peristaltic pump assembly as defined in claim 1 wherein the retaining feature comprises a pump body retaining feature included as part of the pump body, which pump body retaining feature is movable between a closed position and an opened position.

4. The peristaltic pump assembly as defined in claim 3 wherein the pump body retaining feature moves from the closed position to the opened position and back to the closed position when the cassette is rotated into the installed position.

5. The peristaltic pump assembly as defined in claim 4 wherein the retaining feature further comprises a cassette retaining feature included as part of the cassette, which cassette retaining feature engages the pump body retaining feature when the pump body retaining feature is in the closed position.

6. The peristaltic pump assembly as defined in claim 5 wherein audible feedback, tactile feedback, or a combination thereof is provided when the pump body retaining feature engages the cassette retaining feature, thereby indicating that the cassette is in the installed position.

7. The peristaltic pump assembly as defined in claim 5 wherein the pump body retaining feature disengages the cassette retaining feature when the pump body retaining feature is in an opened position, and wherein the opened position is achieved by actuating a release device.

8. The peristaltic pump assembly as defined in claim 7 wherein the release device is a button.

9. The peristaltic pump assembly as defined in claim 1 wherein the removable cassette further includes a hinge journal formed therein and configured to slidably receive the mounting pin.

10. The peristaltic pump assembly as defined in claim 9 wherein the hinge journal is formed at an end portion of the removable cassette, and the cassette retaining feature is formed at another end of the cassette.

11. The peristaltic pump assembly as defined in claim 1 wherein the peristaltic pump assembly does not include a door.