Patent US3903869A successfully refreshed from Google Patents.
US3903869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous negative pressure chamber for infants
Assignee: University of Miami
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Filing: 1974-01-21
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Granted: 1975-09-09
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Expires: 1994-01-21
Abstract
Abstract A continuous negative pressure chamber for treating infants having Idiopathic Respiratory Distress Syndrome including an enclosure with two of the opposed walls of the enclosure each having an opening aligned with each other and each mounting an adjustable iris diaphragm for adjustably engaging the neck and pelvic area of an infant placed in the chamber. A pressure manometer as well as a pressure relief valve are mounted to the chamber. The chamber has a vacuum inlet to which a vacuum source means is connected for producing a continuous negative pressure in the chamber.
Inventors
- 👤 Eduardo H Bancalari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:18
CPC Classifications
A; A61; A61G; A61G11/00; A61G10/00; A61G10/02; A61G10/023; A61H; A61H31/00; A61H31/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
202 words
A continuous negative pressure chamber for treating infants having Idiopathic Respiratory Distress Syndrome comprising an enclosure having a top, a bottom, two spaced side walls and a front and a back spaced with respect to each other and made of a material which is visually transparent and also transparent to Xrays, said front and back being spaced from each other a distance of approximately 15 centimeters, which corresponds to the distance between an infant''s neck and pelvic area, said front and back each having an opening aligned with each other and mounting an adjustable iris diaphragm for adjustably engaging the neck and pelvic area of an infant placed in the enclosure, a pressure manometer mounted to said enclosure for providing an indication of the air pressure therein, a pressure relief valve mounted to said enclosure for relieving the pressure in said enclosure if the pressure exceeds a predetermined limit, a vacuum inlet to said enclosure, and vacuum source means connected to said inlet for producing a continuous negative pressure in said enclosure, and heating means external to said enclosure for heating air within and surrounding said enclosure so that air flow through said iris diaphrams does not produce a deleterious cooling effect.
Claim 2
Dependent Claim
202 words
A continuous negative pressure chamber for treating infants having Idiopathic Respiratory Distress Syndrome comprising an enclosure having a top, a bottom, two spaced side walls and a front and a back spaced with respect to each other and made of a material which is visually transparent and also transparent to Xrays, said front and back being spaced from each other a distance of approximately 15 centimeters, which corresponds to the distance between an infant''s neck and pelvic area, said front and back each having an opening aligned with each other and mounting an adjustable iris diaphragm for adjustably engaging the neck and pelvic area of an infant placed in the enclosure, a pressure manometer mounted to said enclosure for providing an indication of the air pressure therein, a pressure relief valve mounted to said enclosure for relieving the pressure in said enclosure if the pressure exceeds a predetermined limit, a vacuum inlet to said enclosure, and vacuum source means connected to said inlet for producing a continuous negative pressure in said enclosure, and heating means external to said enclosure for heating air within and surrounding said enclosure so that air flow through said iris diaphrams does not produce a deleterious cooling effect.
Claim 3
Dependent Claim
39 words
A continuous negative pressure chamber in accordance with claim 1 wherein said enclosure includes a baffle placed inside said enclosure adjacent said vacuum inlet to prevent materials which might be contained within said enclosure from occluding said vacuum inlet.
Claim 4
Dependent Claim
71 words
A continuous negative pressure chamber in accordance with claim 1 including a rod member mounted to each of said side walls and extending parallel to said side walls and perpendicularly to said front and back and projecting predetermined distances beyond the front and back, whereby material my be wrapped around the projecting rod members to provide support for the head and lower body portion of an infant placed in the chamber.
Claim 5
Dependent Claim
34 words
A continuous negative pressure chamber in accordance with claim 1 wherein said vacuum source means is adjustable to provide a continuous negative pressure within said enclosure within the range of 2-15 centimeters of H2O.
Claim 6
Dependent Claim
59 words
A continuous negative pressure chamber in accordance with claim 1 wherein said vacuum source means comprises a continuous vacuum pump and including a selectively operable valve connecting the vacuum pump to said vacuum inlet, and further including control means for cyclically opening and closing said valve for cyclically varying the magnitude of continuous negative pressure maintained within said enclosure.
Claim 7
Dependent Claim
20 words
A continuous negative pressure chamber in accordance with claim 1 wherein said heating means comprises an incubator surrounding said enclosure.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-08 | 1979-03-10 | 1979-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-08 | 1983-03-10 | 1983-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-08 | 1987-03-10 | 1987-09-09 | $7700.00 | Window Closed / Lapsed |