Method of installing and removing a cassette from a pump body having a mounting pin

• US 8,257,054 B2
• Filed: 03/23/2011
• Issued: 09/04/2012
• 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:
  US13/069,505
• Publication Number:
  US 20110171052A1
• Time in Patent Office: 531 Days
• Field of Search: 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, 417/53
• US Class Current: 417/53
• 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 method of installing a cassette having a tube inlet and a tube outlet in a pump body, comprising:

sliding the cassette onto a mounting pin included in a pump body; and

rotating the cassette about the mounting pin until a cassette retaining feature engages a pump body retaining feature, thereby installing the cassette in the pump body, wherein the pump body is configured to allow movement of the mounting pin relative to the pump body along a linear path that is perpendicular to the mounting pin axis when the cassette is in the installed position.

2. The method as defined in claim 1, further comprising generating audible feedback, tactile feedback, or combinations thereof when the cassette retaining feature engages the pump body retaining feature, thereby indicating that the cassette has been rotated into an installed position.

3. The method as defined in claim 1, further comprising moving the pump body retaining feature from a closed position to an opened position and back to the closed position when the cassette retaining feature engages the pump body retaining feature.

4. The method as defined in claim 1 wherein the mounting pin is slidably received in a hinge journal formed in the cassette.

5. The method as defined in claim 1 wherein the pump body is configured to guide the cassette as the cassette is rotated into the installed position.

6. A method of removing a cassette having a tube inlet and a tube outlet from a pump body having a mounting pin, the pump body configured to allow movement of the mounting pin relative to the pump body along a linear path that is perpendicular to the mounting pin axis when the cassette is in the installed position, the method comprising:

disengaging a cassette retaining feature from a pump body retaining feature, the pump body retaining feature being disposed in the pump body, the pump body including the cassette installed therein;

rotating the cassette about the mounting pin out of an installed position; and

sliding the cassette off of the mounting pin, thereby removing the cassette from the pump body.

7. The method as defined in claim 6 wherein disengaging is accomplished by actuating a release device.

8. The method as defined in claim 7 wherein the release device is a button.

9. The method as defined in claim 6 wherein disengaging is further accomplished by moving the pump body retaining feature from a closed position to an opened position.