Insulated intravenous administration tubing and drip chambers

• US 5,601,894 A
• Filed: 07/06/1995
• Issued: 02/11/1997
• Est. Priority Date: 07/06/1995
• Status: Expired due to Fees

• Current Assignee: Johns Hopkins Hospital (Johns Hopkins Health System)
• Original Assignee: Johns Hopkins Hospital (Johns Hopkins Health System)
• Inventors: Maruschak, Gary F.
• Primary Examiner(s): Robinson, Ellis
• Assistant Examiner(s): KYRIAKOU, CHRISTOS
• Application Number:
  US08/499,091
• Time in Patent Office: 586 Days
• Field of Search: 428/35.7, 428/36.91, 428/36.9, 428/920, 428/35.2, 428/35.4, 428/36.6, 138/110, 138/113, 138/118.1, 138/148, 138/149, 604/113, 604/264, 604/280
• US Class Current: 428/36.9
• CPC Class Codes: A61M 2205/3633 thermally insulated
• CPC Class Codes: A61M 5/44 having means for cooling or heating the devices or media
• CPC Class Codes: B32B 1/08 Tubular products
• CPC Class Codes: B32B 2307/304 Insulating
• CPC Class Codes: B32B 2307/412 Transparent
• CPC Class Codes: B32B 2535/00 Medical equipment, e.g. bandage, prostheses, catheter medical patches B32B2556/00
• CPC Class Codes: B32B 2597/00 Tubular articles, e.g. hoses, pipes
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: Y10S 428/92 Fire or heat protection feature
• CPC Class Codes: Y10T 428/1334 Nonself-supporting tubular film or bag [e.g., pouch, envelope, packet, etc.]
• CPC Class Codes: Y10T 428/1352 Polymer or resin containing [i.e., natural or synthetic]
• CPC Class Codes: Y10T 428/139 Open-ended, self-supporting conduit, cylinder, or tube-type article

Abstract

A device or apparatus to insulate intravenous administration tubing is disclosed. The insulation device consists of a long tubular-like structure which consists of two concentric channels, an inner channel and an outer channel. The inner channel accepts and encloses the actual tubing in which warm fluid flows. Three key functions are achieved with this device. One key function of the insulation device is to maintain the inner channel centered within the outer channel; this provides for maximum insulation efficiency/properties with the minimum of separating space. Another equally key function is to provide for transparency; the more transparent the insulation device the better the ability of the user to see the quality of the warm fluid flowing within, i.e. detect air bubbles. Another key function is to provide for ease of set-up and reusability. All components are to be made of clear, flexible, light-weight materials to permit insulation and visualization of I.V. fluids and air bubbles. The insulation device has particular use, but not limited to, in preventing convective heat loss of warmed I.V. fluid as it flows through the inserted patient I.V. tubing, that would otherwise be exposed to ambient room temperature.

Claims

1. An insulation device in combination with intravenous tubing, the insulation device comprising:

a flexible wrap material assembly comprising transparency to provide visibility of enclosed portions of said intraveneous tubing surrounding and insulating the intravenous tubing, said wrap material assembly including means defining an interior wall having an inner surface and an outer surface, said inner surface of said interior wall defining an interior channel;

an exterior wall having an inner surface and an outer surface, said exterior wall being spaced from said interior wall so as to define an insulation air space therebetween;

an access opening extending the length of the wrap material assembly from said outer surface of said exterior wall to said interior channel for insertion of the intravenous tubing; and

support means comprising a plurality of spaced structures for maintaining the interior channel generally centered within the exterior wall so as to maintain said insulating air space between the interior and exterior walls.

2. The combination of claim 1 further comprising closure devices for securing the intravenous tubing within the wrap material assembly.

3. The combination of claim 1 further comprising means for accommodating at least one of drip chambers, flow rate controllers, injection sites, and like components of intravenous administration equipment.

4. The combination of claim 1 wherein the said plurality of spaced structures extend along the length of the interior and exterior walls and is positioned in the insulation air space.

5. The combination of claim 1 wherein the wrap material assembly comprises two mating portions each having a said interior wall, exterior wall, and insulation air space, the interior wall of each said mating portion being concavely curved so as to accommodate the intravenous tubing, and said mating portions being hinged together along one side thereof to facilitate insertion of the intravenous tubing.

6. The combination of claim 5 further comprising closure means at a side opposite the hinged side to secure the intravenous tubing between the mating portions.

7. The combination of claim 1 wherein the insulation air space is at least partially filled with light weight, transparent insulation material.

8. The combination of claim 1, wherein said interior wall is configured so as to be substantially continuous and to substantially correspond to the exterior configuration of said intravenous tubing disposed therewithin.

9. The combination of claim 1, wherein said wrap material assembly is substantially entirely transparent.

12. The combination of claim 5, wherein said plurality of spaced structures comprise a plurality of spaced-apart support elements each extending between and connecting said inner and outer walls.

10. An insulation device in combination with intravenous tubing, the insulation device comprising:

a wrap assembly comprising transparency to provide visibility of enclosed portions of said intraveneous tubing encircling and insulating the intravenous tubing, the wrap assembly having an inner wall for defining an interior channel extending along the length thereof;

said inner wall having inner and outer surfaces;

an outer wall spaced from said inner wall by a plurality of spaced structures, said outer wall having inner and outer surfaces;

an insulation air space being defined between said inner and outer walls; and

a parting slit being defined along the length of said wrap assembly and between said outer surface of said outer wall and said inner surface of said inner wall thereby to define an access opening for selective insertion of the intravenous tubing into said interior channel.

11. The combination of claim 10, further comprising at least one closure device for selectively closing at least a portion of said slit thereby to retain said intravenous tubing within said wrap assembly.

13. The combination of claim 10, wherein said wrap assembly comprises first and second mating wrap portions each having an inner wall element and outer wall element, said inner wall elements of said mating wrap portions together defining said interior channel.

14. The combination of claim 13, wherein said mating portions are hingedly coupled along one side edge thereof.

15. The combination of claim 14, further comprising a closure assembly for selectively securing said mating portions at a side opposite said one side.

16. The combination of claim 10, wherein said insulation space is at least partially filled with a lightweight transparent insulation material.

17. The combination of claim 10, wherein said wrap material assembly is substantially entirely transparent.