Pump set for administering fluid with secure loading features and manufacture of component therefor

• US 20080167617A1
• Filed: 01/05/2007
• Published: 07/10/2008
• Est. Priority Date: 01/05/2007
• Status: Active Grant

• Current Assignee: Kpr U.S., LLC (Cardinal Health, Inc.)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Swisher, David Rork, Meier, Kevin C., Boulanger, Jason
• Granted Patent: US 8,021,336 B2
• Time in Patent Office: Days
• US Class Current: 604/151
• CPC Class Codes: A61M 2205/14 Detection of the presence or absence of a tube, a connector or a container in an apparatus
• 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: A61M 5/14232 Roller pumps
• CPC Class Codes: Y10T 29/49236 Fluid pump or compressor making

Abstract

A pump set for use in a liquid delivery pump of the type for delivering liquid to a patient, having an infrared radiation detector for detecting infrared radiation, and providing an indication that the pump set is properly loaded on the pump. The pump set comprises a conduit for the liquid and a safety interlock member which is carried by the conduit. The safety interlock member is formed of a material that transmits infrared radiation and blocks visible light

Claims

1. A pump set for use in a liquid delivery pump of the type for delivering liquid to a patient, having an infrared radiation detector for detecting infrared radiation, and providing an indication that the pump set is properly loaded on the pump, the pump set comprising:

a conduit for the liquid; and

a safety interlock member which is carried by the conduit, formed of a compositionally homogeneous material which transmits infrared radiation and blocks visible light, and adapted for placement in a path of infrared radiation propagation toward the infrared radiation detector.

2. The pump set of claim 1 wherein the safety interlock member transmits radiation within a wavelength range between about 750 nm and about 1000 μ

m and blocks visible light radiation within a wavelength range between about 380 nm and about 740 nm.

3. The pump set of claim 1 wherein the safety interlock member comprises a thermoplastic material.

4. The pump set of claim 3 wherein the thermoplastic material comprises polyvinyl chloride.

5. The pump set of claim 4 wherein the thermoplastic material is molded, injection molded, or extruded at a temperature between about 207°

C. and about 216°

C.

6. A pump set for use in a liquid delivery pump of the type for delivering liquid to a patient, having an infrared radiation detector for detecting infrared radiation, and providing an indication that the pump set is properly loaded on the pump, the pump set comprising:

a conduit for the liquid; and

a safety interlock member which is carried by the conduit, formed of a colorant-free plastic material which transmits infrared radiation and blocks visible light, and adapted for placement in a path of infrared radiation propagation toward the infrared radiation detector.

7. The pump set of claim 6 wherein the safety interlock member transmits radiation within a wavelength range between about 750 nm and about 1000 μ

m and blocks visible light radiation within a wavelength range between about 380 nm and about 740 nm.

8. The pump set of claim 6 wherein the safety interlock member comprises a thermoplastic material.

9. The pump set of claim 8 wherein the thermoplastic material comprises polyvinyl chloride.

10. The pump set of claim 9 wherein the thermoplastic material is molded, injection molded, or extruded at a temperature between about 207°

C. and about 216°

C.

11. A pump set for use in a liquid delivery pump of the type for delivering liquid to a patient, having an infrared radiation detector for detecting infrared radiation, and providing an indication that the pump set is properly loaded on the pump, the pump set comprising:

a conduit for the liquid; and

a safety interlock member which transmits infrared radiation and blocks visible light, comprises a polymer having visible-light-absorbing polyenes, and is adapted for placement in a path of infrared radiation propagation toward the infrared radiation detector.

12. The pump set of claim 11 wherein the safety interlock member is carried by the conduit.

13. The pump set of claim 12 wherein the safety interlock member transmits radiation within a wavelength range between about 750 nm and about 1000 μ

m and blocks visible light radiation within a wavelength range between about 380 nm and about 740 nm.

14. The pump set of claim 12 wherein the safety interlock member comprises a thermoplastic material.

15. The pump set of claim 14 wherein the thermoplastic material comprises polyvinyl chloride.

16. The pump set of claim 15 wherein the thermoplastic material is molded, injection molded, or extruded at a temperature between about 207°

C. and about 216°

C.

17. A pump set for use in a liquid delivery pump of the type for delivering liquid to a patient, having an infrared radiation detector for detecting infrared radiation, and providing an indication that the pump set is properly loaded on the pump, the pump set comprising:

a conduit for the liquid; and

a safety interlock member which transmits infrared radiation and blocks visible light, comprises a dehydrochlorinated polyvinyl chloride material, and is adapted for placement in a path of infrared radiation propagation toward the infrared radiation detector.

18. The pump set of claim 17 wherein the safety interlock member is carried by the conduit.

19. The pump set of claim 18 wherein the safety interlock member transmits radiation within a wavelength range between about 750 nm and about 1000 μ

m and blocks visible light radiation within a wavelength range between about 380 nm and about 740 nm.

20. The pump set of claim 18 wherein the safety interlock member comprises a thermoplastic material.

21. The pump set of claim 20 wherein the thermoplastic material comprises polyvinyl chloride.

22. The pump set of claim 21 wherein the thermoplastic material is molded, injection molded, or extruded at a temperature between about 207°

C. and about 216°

C.

23. A safety interlock member which is adapted to be carried by a conduit of a pump set for use in a liquid delivery pump of the type for delivering liquid to a patient, having an infrared radiation detector for detecting infrared radiation, and providing an indication that the pump set is properly loaded on the pump, the safety interlock formed from a compositionally homogeneous material which transmits infrared radiation and blocks visible light, and being adapted for placement in a path of infrared radiation propagation toward the infrared radiation detector.

24. The safety interlock member of claim 23 wherein the compositionally homogenous material is colorant-free.

25. The safety interlock member of claim 23 wherein the compositionally homogenous material comprises a polymer having visible-light-absorbing polyenes.

26. The safety interlock member of claim 23 wherein the compositionally homogenous material comprises a dehydrochlorinated polyvinyl chloride material.

27. A method for forming a safety interlock member for a pump set for use with a pump to deliver a liquid to a patient comprising:

forming the safety interlock member from polyvinyl chloride by a process selected from among molding, injection molding, and extruding; and

exposing the polyvinyl chloride to a temperature above about 207°

C. whereby the polyvinyl chloride undergoes dehydrochlorination and formation of visible-light-absorbing polyenes such that the safety interlock member transmits infrared radiation and blocks visible light.