Self-contained isolation and enviromental protection system

• US 6,001,057 A
• Filed: 03/26/1998
• Issued: 12/14/1999
• Est. Priority Date: 03/26/1998
• Status: Expired due to Term

• Current Assignee: MedFlex LLC
• Original Assignee: Northrop Grumman Corporation
• Inventors: Bongiovanni, Richard Anthony, Barnett, Peter Andrew, Shultz, Douglas Ellwood
• Primary Examiner(s): Dvorak, Linda C. M.
• Assistant Examiner(s): Kearney, R.
• Application Number:
  US09/048,768
• Time in Patent Office: 628 Days
• Field of Search: 600/21, 600/22, 135/91, 135/92, 135/93
• US Class Current: 600/21
• CPC Class Codes: A61G 1/04 Parts, details or accessories, e.g. head-, foot-, or like rests specially adapted for stretchers
• CPC Class Codes: A61G 10/04 Oxygen tents ; Oxygen hoods
• CPC Class Codes: A61G 2210/30 for intensive care
• CPC Class Codes: A62B 31/00 Containers or portable cabins for affording breathing protection with devices for reconditioning the breathing air or for ventilating, in particular those that are suitable for invalids or small childrenventilation of gasproof shelters A62B13/00; protective clothes or coverings A62B17/00; treatment rooms for medical purposes A61G10/00

Abstract

A self-contained isolation and environmental protection life support system for shielding a patient contained therein or, alternatively, isolating a contaminated patient from a clean environment while allowing treatment of traumatic injuries to the patient. The system comprises the combination of an environmental control system (ECS) and a containment enclosure that are designed to function in concert with conventional life support stretcher. The ECS component possesses an air management system that is designed and configured to extract contaminated particles and gas from the external air and deliver the same to the patient contained within the containment enclosure. To facilitate such delivery, the containment enclosure is preferably provided with a plurality of tubular passages which are designed to be filled with air provided by the ventilator system to thus cause the containment enclosure to expand to form a semi-rigid structure. A multiplicity of apertures formed upon the tubular passages that causes the purified air to pass therethrough and wash over the patient in a head-to-toe direction such that rapid removal of toxic residues is facilitated. The system further includes heating and cooling systems integrated into the ECS coupled with an environmental sensor to regulate attemporated air to a desired temperature depending on the conditions of the external environment.

Claims

1. A self-contained isolation and environmental protection system for protecting a medical patient from a contaminated environment comprising:

a) a body capsule attachable to a litter having an interior compartment for receiving and isolating said medical patient, said body capsule comprising first and second bag portions interconnectable to one another that cooperate to form said interior compartment, said body capsule further having a fastener for fastening said first and second bag portions to one another for opening and closing said body capsule and respectively exposing or isolating said interior compartment from said contaminated environment, said body capsule being formed from a material substantially impermeable to vapor fumes and contagions present in the surrounding external environment;

b) an Environmental Control System (ECS) for providing decontaminated, conditioned and refreshed air;

c) an interface formed upon said body capsule for coupling and interconnecting with said ECS; and

d) a passageway formed upon said body capsule fluidly connected to said ECS for receiving air therefrom, said passageway having at least one inwardly-facing aperture formed thereon such that when said passageway is supplied with air provided by said ECS, said air is caused to pass through said aperture and into said interior compartment of said body capsule.

2. The system of claim 1 wherein said ECS comprises:

a) an apparatus for receiving air from the external surroundings;

b) a filter for extracting contaminating particles and gas from said air received from said external environment; and

c) an apparatus for passing said filtered and decontaminated air into said body capsule.

3. The system of claim 2 wherein said ECS is designed and configured to deliver said air in a manner so as to establish a predetermined air pressure which is higher than the external ambient air pressure.

4. The system of claim 2 wherein said ECS further includes an apparatus for attemporating the air delivered to said body capsule to a predetermined temperature.

5. The system of claim 4 wherein said system further comprises:

d) an environmental sensor coupled to said apparatus for attemporating said air temperature for selectively controlling the predetermined temperature to which said air is attemporated.

6. The system of claim 2 wherein said ECS further comprises a source of conditioned and filtered air and means for distributing said air to a ventilator subsystem provided in said litter.

7. The system of claim 1 further comprising:

a) a pressure relief system coupled to said body capsule, said pressure relief system being designed and configured to release a portion of said air delivered to said body capsule and filter and decontaminate a portion of said air delivered to said body capsule.

8. The apparatus of claim 1 wherein said passageway for receiving pressurized air comprises a plurality of tubular gas passageways fluidly connected to one another such that when said plurality of tubular passageways are supplied with pressurized air, said body capsule assumes an expanded position to form a semi-rigid structure.

9. The apparatus of claim 1 wherein said passageway has a plurality of inwardly facing apertures formed thereon, said plurality of apertures being designed and configured to deliver and distribute air into said interior compartment of said body capsule.

10. The apparatus of claim 1 wherein said apparatus is designed and configured to assume a first collapsed configuration for facilitating the transport and storage thereof, and a second expanded configuration when in use.

11. The apparatus of claim 1 wherein said body capsule further includes an exhaust valve formed thereon for allowing pressurized air delivered to said interior compartment to pass therefrom.

12. The apparatus of claim 11 wherein said body capsule is formed to have proximal and distal ends such that when said medical patient is contained within the interior compartment thereof, the head of said medical patient is oriented toward said proximal end and the feet and legs of said medical patient are oriented toward said distal end, said exhaust valve being formed upon said distal end of said body capsule such that when pressurized air is delivered to said interior compartment, said air is caused to expel toward said distal end of said body capsule.

13. The apparatus of claim 1 wherein said body capsule is sized and adapted to assume a first collapsed position and a second expanded position when said capsule is in use for providing access to said medical patient.

14. The apparatus of claim 1 wherein said body capsule is formed from a transparent material.

15. The apparatus of claim 1 wherein said body capsule has a window formed thereon to allow visual examination of said interior compartment from said external environment.