US4620538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-weight oxygen delivery hood assembly for hyperbaric chamber
Assignee: United States Department of the Air Force
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Filing: 1985-03-19
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Granted: 1986-11-04
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Expires: 2005-03-19
Abstract
Abstract A light-weight hyperbaric oxygen therapy hood assembly comprising a neckdam and hood having a gas inlet and outlet. The neckdam comprises a diaphragm which can be varied from an open to a closed condition for sealing of the neckdam around the neck of the patient, the diaphragm being concentric to the hood and neckdam. An inflatable bladder is providable at the back of the hood. A check valve is affixable to the gas outlet of the hood.
Inventors
- 👤 Ewald Koegel
- 👤 Paul J. Sheffield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:08
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/06; A61M16/0605; A61M16/0627
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
169 words
A lightweight therapeutic hood assembly comprising: (a) a lightweight ring mechanism comprising first and second mating rings rotatably secured to each other for encircling a patient's neck; (b) a flexible, transparent plastic hood portion attached to one of said rings for enveloping the patient's head; (c) plastic diaphragm means attached to the other of said rings which in conjunction with relative rotation of said first and second mating rings forms a substantially airtight seal around the patient's neck which, in conjunction with the hood portion, forms a sealed environment around the patient's head; (d) inflatable bladder means attached to the interior of said hood portion for positioning the patient's head within said hood portion with the diaphragm means secured around the patient's neck ; (e) a therapeutic gas inlet connected to said hood portion for introducing a pressurized therapeutic gas into said hood assembly containing the patient's head; and (f) a gas exit connected to said hood portion which promotes circulation of said therapeutic gas through said hood assembly.
Claim 2
Dependent Claim
169 words
A lightweight therapeutic hood assembly comprising: (a) a lightweight ring mechanism comprising first and second mating rings rotatably secured to each other for encircling a patient's neck; (b) a flexible, transparent plastic hood portion attached to one of said rings for enveloping the patient's head; (c) plastic diaphragm means attached to the other of said rings which in conjunction with relative rotation of said first and second mating rings forms a substantially airtight seal around the patient's neck which, in conjunction with the hood portion, forms a sealed environment around the patient's head; (d) inflatable bladder means attached to the interior of said hood portion for positioning the patient's head within said hood portion with the diaphragm means secured around the patient's neck ; (e) a therapeutic gas inlet connected to said hood portion for introducing a pressurized therapeutic gas into said hood assembly containing the patient's head; and (f) a gas exit connected to said hood portion which promotes circulation of said therapeutic gas through said hood assembly.
Claim 3
Dependent Claim
29 words
The lightweight therapeutic hood assembly of claim 1 further comprising a check valve at said gas exit to promote unidirectional circulation of said therapeutic gas through said hood assembly.
Claim 4
Dependent Claim
24 words
The lightweight therapeutic hood assembly of claim 1 further comprising a resealable aperture in said hood portion for permitting immediate access to the patient.
Claim 5
Dependent Claim
15 words
The lightweight therapeutic hood assembly of claim 1 wherein said pressurized therapeutic gas comprises oxygen.
Claim 6
Dependent Claim
17 words
The lightweight therapeutic hood assembly of claim 1 wherein said device is used for hyperbaric oxygen therapy.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-11-03 | 1990-05-05 | 1990-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-03 | 1994-05-05 | 1994-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-03 | 1998-05-05 | 1998-11-04 | $7700.00 | Window Closed / Lapsed |