Drug pump testing system and methods

• US 6,422,057 B1
• Filed: 09/29/1998
• Issued: 07/23/2002
• Est. Priority Date: 09/29/1998
• Status: Expired due to Fees

• Current Assignee: Smiths Medical ASD, Inc. (Smiths Group International Holdings Ltd.)
• Original Assignee: Deltec Inc (ICU Medical Incorporated)
• Inventors: Anderson, Keith B.
• Primary Examiner(s): NOLAND, THOMAS
• Application Number:
  US09/162,672
• Time in Patent Office: 1,393 Days
• Field of Search: 73/13.6, 731/68, 73/17.4, 128/DIG.12, 128/DIG.13, 417/475, 417/477.2, 604/34, 604/67, 604/131, 604/132, 604/151, 604/153, 604/246, 604/250
• US Class Current: 73/1.36
• CPC Class Codes: A61M 2005/16868 Downstream occlusion sensors
• CPC Class Codes: A61M 2005/16872 Upstream occlusion sensors
• CPC Class Codes: A61M 2205/123 with incorporated reservoirs
• CPC Class Codes: A61M 2205/6018 providing set-up signals for the apparatus configuration
• CPC Class Codes: A61M 2205/70 with testing or calibration facilities
• CPC Class Codes: A61M 5/14228 with linear peristaltic action, i.e. comprising at least three pressurising members or a helical member
• CPC Class Codes: F04B 43/082 the tubular flexible member being pressed against a wall by a number of elements, each having an alternating movement in a direction perpendicular to the axes of the tubular member and each having its own driving mechanism
• CPC Class Codes: F04B 51/00 Testing machines, pumps, or pumping installations

Abstract

A drug pump testing system and method comprise a pump control module having tube engaging members, with the pump control module coupled to a calibration cassette. The calibration cassette houses a reservoir bag comprising a fluid chamber and a collection area. The fluid chamber contains a known test volume prior to the initiation of the test cycle. The fluid chamber of the reservoir bag is coupled with a tube leading to the collection area, and the tube is positioned along the calibration cassette for occlusion by the tube engaging members of the pump control module. The reservoir bag comprises a fluid chamber and a collection area. The cassette can be a dual purpose cassette which tests sensors on the pump control module and also tests the accuracy of the pump control module.

Claims

1. A drug pump testing system comprising:

(a) a pump control module having moveable tube engaging members;

(b) a calibration cassette coupled to said pump control module;

(c) said calibration cassette housing a reservoir bag comprising a fluid chamber and a collection area, said fluid chamber containing a known test volume;

(d) said reservoir bag coupled with a tube communicating between said fluid chamber and said collection area; and

(e) said tube positioned along said calibration cassette for occlusion by said tube engaging members.

2. The drug pump testing system of claim 1, wherein said pump control module has a calibration mode.

3. The drug pump testing system of claim 2, wherein said pump control module enters said calibration mode when said calibration cassette is coupled to said pump control module.

4. The drug pump testing system of claim 2, wherein said pump control module counts pump strokes of said tube engaging members.

5. The drug pump testing system of claim 1, wherein a volume of said known test volume is an integer multiple of a nominal pump stroke volume of said pump control module.

6. The drug pump testing system of claim 1, wherein said reservoir bag includes a dual reservoir bag.

7. The drug pump testing system of claim 6, wherein said dual reservoir bag further comprises a barrier separating said fluid chamber and said collection area.

8. The drug pump testing system of claim 1, wherein said pump control module further comprises at least one occlusion sensor.

9. The drug pump testing system of claim 8, wherein said occlusion sensor ceases movement of said tube engaging members of said pump control module after said known test volume is pumped to said collection area.

10. The drug pump testing system of claim 8, wherein said pump control module further comprises a sensor testing mode.

11. The drug pump testing system of claim 10, wherein said calibration cassette further comprises a bottom surface having a sensor testing mode cassette identification projection and at least one pressure protrusion.