Patient warming system with IV fluid warmer

• US 5,817,146 A
• Filed: 11/09/1995
• Issued: 10/06/1998
• Est. Priority Date: 11/09/1995
• Status: Expired due to Term

• Current Assignee: 3M Innovative Properties Company (3M Company)
• Original Assignee: Augustine Medical, Inc. (3M Company)
• Inventors: Augustine, Scott D.
• Primary Examiner(s): Nasser, Robert L.
• Application Number:
  US08/552,510
• Time in Patent Office: 1,062 Days
• Field of Search: 432/62, 432/92, 432/224, 432/225, 34/107, 34/201, 34/202, 34/242, 604/113, 607/96, 607/108, 607/114, 607/107, 607/104, 5/423
• US Class Current: 607/104
• CPC Class Codes: A61F 2007/006 of gas
• CPC Class Codes: A61F 2007/0095 with a temperature indicator
• CPC Class Codes: A61F 7/0053 Cabins, rooms, chairs or units for treatment with a hot or cold circulating fluid
• CPC Class Codes: A61F 7/0097 Blankets with active heating or cooling sources warming mats A61F7/08

Abstract

A small container such as a syringe or vial of fluid is inserted into a flow of temperature-conditioned gas to warm the fluid. The gas may be used, for example, to inflate a thermal care apparatus that exhausts the gas through a plurality of exhaust ports about a patient to envelop the patient in a warm bath. In one embodiment, the container is inserted into an inflatable chamber of the apparatus, and sealably held in place by a resilient aperture structure. In another embodiment, the container is inserted into through the aperture structure into a fluid supply hose that brings temperature-conditioned gas to the apparatus from a source. The aperture structure may comprise, for example, a selected pattern of perforations defined in the chamber or hose, or a layering of resilient material affixed to the chamber or hose with a suitably shaped aperture for receiving the container.

Claims

1. A thermal-treatment device comprising:

an inflatable thermal blanket with a passage to carry a stream of thermally-conditioned gas;

an access port to the passage defined in the inflatable thermal blanket; and

a self-closing aperture structure acting on the inflatable thermal blanket to sealably receive and support an elongated fluid container in the access port while an end of the container extends through the inflatable structure, wherein the aperture structure comprises a resilient cover layer adhered externally to the inflatable thermal blanket and defining an aperture therethrough, said aperture being aligned with the access port.

2. The device of claim 1, wherein the inflatable thermal blanket includes a plurality of exhaust ports to expel the thermally-conditioned gas.

3. The device of claim 1, further including the elongated fluid container received and supported in the access port by the aperture structure.

4. The device of claim 3, wherein the fluid container comprises a syringe.

5. The device of claim 3, wherein the fluid container comprises a tube.

6. The device of claim 1, wherein the cover layer comprises a layer of synthetic porous foam.

7. The device of claim 1, wherein the cover layer comprises a layer of rubber.

8. The device of claim 1, wherein the cover layer comprises a resilient self-adhesive layer.

9. The device of claim 1, wherein the aperture structure further comprises a layer of adhesive material interposed between the cover and the inflatable structure.

10. The device of claim 1, wherein the access port comprises an aperture defined in the inflatable thermal blanket.

11. The device of claim 1, wherein the access port comprises a perforated pattern defined in the inflatable thermal blanket.

12. The device of claim 1, wherein the access port comprises a region of penetrability defined in the inflatable thermal blanket.

13. The device of claim 1, further comprising a thermometer affixed to the inflatable thermal blanket proximate the aperture structure.

14. The device of claim 13, wherein the thermometer comprises a strip of thermochromic liquid crystals.

15. The device of claim 1, further including the elongated fluid container received and supported in the access port by the aperture structure.

16. The device of claim 15, further including a thermometer on the elongated fluid container.

17. A thermal-treatment device comprising:

an inflatable thermal blanket;

an inflatable structure in the inflatable thermal blanket defining a passage to carry a stream of thermally-conditioned gas and including a plurality of exhaust ports to exhaust the gas into a thermal care zone;

an access port to the passage defined in the inflatable structure;

a resilient self-closing structure acting on the inflatable thermal blanket to sealably receive and support an elongated fluid container in the access port while an end of the container extends through the inflatable structure, wherein the aperture structure comprises a resilient cover layer adhererd externally to the inflatable thermal blanket and defining an aperture therethrough, said aperture being aligned with the access port; and

an inlet in the inflatable thermal blanket to receive the thermally-conditioned gas in the inflatable structure.

18. The thermal care apparatus of claim 17, further including the elongated fluid container received and supported in the access port by the aperture structure.

19. The thermal care apparatus of claim 18, wherein the fluid container comprises a syringe.

20. The thermal care apparatus of claim 18, wherein the fluid container comprises a tube.

21. The thermal care apparatus of claim 17, wherein the cover layer comprises a layer of synthetic porous foam.

22. The thermal care apparatus of claim 17, wherein the cover layer comprises a layer of rubber.

23. The thermal care apparatus of claim 17, wherein the cover layer comprises a resilient self-adhesive layer.

24. The thermal care apparatus of claim 17, wherein the aperture structure further comprises a layer of adhesive material interposed between the cover and the inflatable structure.

25. The thermal care apparatus of claim 17, wherein the access port comprises an aperture defined in the inflatable structure.

26. The thermal care apparatus of claim 17, wherein the access port comprises a perforated pattern defined on the inflatable structure.

27. The thermal care apparatus of claim 17, wherein the access port comprises a region of penetrability defined in the inflatable structure.

28. The thermal care apparatus of claim 17, wherein the inflatable structure comprises one or more inflatable chambers, each defining a plurality of exhaust ports to exhaust the thermally-controlled medium into a thermal care zone.

29. The thermal care apparatus of claim 17, further comprising a thermometer affixed to the inflatable structure proximate the aperture structure.

30. The thermal care apparatus of claim 25, wherein the thermometer comprises a strip of thermochromic liquid crystals.

31. The thermal care apparatus of claim 17, further including the elongated fluid container received and supported in the access port by the aperture structure.

32. The thermal care apparatus of claim 31, further including a thermometer in the elongated fluid container.

33. An inflatable thermal blanket to bathe a patient in a thermally-controlled gas, said blanket including at least one inflatable structure including an inlet to receive the thermally-controlled gas into the structure and also including a plurality of exhaust ports to exhaust the thermally-controlled gas into a thermal care zone, said structure further including a resilient aperture sealably receive and support an elongated fluid container in the access port while an end of the container extends into the structure, wherein the aperture comprises a resilent cover layer adhered externally to the inflatable thermal blanket and defining an aperture therethrough, said aperture being aligned with the access port.

34. The thermal care apparatus of claim 33, further including the elongated fluid container received and supported in the aperture.

35. The thermal care apparatus of claim 34, wherein the fluid container comprises a syringe.

36. The thermal care apparatus of claim 35, wherein the fluid container comprises a tube.

37. The thermal care apparatus of claim 33, wherein the cover layer comprises a layer of synthetic porous foam.

38. The thermal care apparatus of claim 33, wherein the cover layer comprises a layer of rubber.

39. The thermal care apparatus of claim 33, wherein the cover layer comprises a resilient self-adhesive layer.

40. The thermal care apparatus of claim 33, wherein the resilient aperture further comprises a layer of adhesive material interposed between the cover and the structure.

41. The thermal care apparatus of claim 33, wherein the access port comprises an aperture defined in the structure.

42. The thermal care apparatus of claim 33, wherein the access port comprises a perforated pattern defined in the structure.

43. The thermal care apparatus of claim 33, wherein the access port comprises a region of penetrability defined on the structure.

44. The thermal care apparatus of claim 33, wherein the structure comprises one or more inflatable chambers, each defining a plurality of exhaust ports to exhaust the thermally-controlled medium into a thermal care zone.

45. The thermal care apparatus of claim 33, further comprising a thermometer affixed to the structure proximate the aperture structure.

46. The thermal care apparatus of claim 45, wherein the thermometer comprises a strip of thermochromic liquid crystals.

47. The thermal care apparatus of claim 33, further including the elongated fluid container received and supported in the resilient aperture.

48. The thermal care apparatus of claim 47, further including a thermometer on the elongated fluid container.