Patent US3948255A successfully refreshed from Google Patents.
US3948255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for endotracheal and esophageal intubation
Assignee: Individual
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Filing: 1975-01-20
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Granted: 1976-04-06
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Expires: 1995-01-20
Abstract
Abstract Apparatus for use in artificial respiration and the like, comprising an elongated tubular body having a flexible inner end portion adapted for insertion in the esophagus or trachea of a patient and an outer end portion for connection to a source of fluid. An inflatable cuff is carried at the inner end portion. The upper end portion of the tubular body includes an adapter, a seal for the lumen of the tubular body carried by the adapter and a plurality of closable openings spaced in the upper portion between the seal and the outer end of the tubular body. In the esophageal mode, the lumen of the tubular body is sealed to prevent the flow of fluids between the upper portion and lower portion of the tubular body. The openings in the upper portion are open to permit the flow of fluid therethrough into the patient's trachea and lungs. In the tracheal mode, the openings in the upper portion are closed, and the lumen of the tubular body is open to provide fluid communication through the tubular body.
Inventors
- 👤 Kenneth L. Davidson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:11
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/04; A61M16/0048; A61M16/0402; A61M16/0409; A61M16/0415; A61M16/0434; A61M16/0454; A61M16/0486; A61M16/06; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86863
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
440 words
An adapter for medical equipment designed for endotracheal and esophageal intubation, said adapter comprising: an outer sleeve having an open upper end and a lower end and a bore extending therebetween, a portion of said sleeve adjacent the lower end being adapted to be received in a tube for esophageal and endotracheal intubation, a wall member extending across the bore adjacent the lower end of said outer sleeve, said wall member having a first opening therein; the center of which is eccentrically disposed with respect to the longitudinal axis of the bore, and said outer sleeve further including a plurality of circumferentially arranged ports in the wall thereof located intermediate the upper end and the wall member; an inner sleeve having an open upper and lower end, and a bore extending therebetween, said inner sleeve mounted within said outer sleeve and rotatable therein between a first and a second position with respect to said outer sleeve, the lower end of said inner sleeve being located adjacent the wall member of said outer sleeve, an inwardly extending member extending across a circumferential portion of the lower end of the bore of said inner sleeve defining a second opening at said lower end eccentrically disposed with respect to the longitudinal axis of said inner sleeve and in alignment with said first opening, whereby said inwardly extending member cooperates with the wall member of said outer sleeve to seal the bore of said inner sleeve when said inner sleeve is in the first position and the second opening of the inner sleeve is aligned with the first opening of said outer sleeve when said inner sleeve is in the second position, a plurality of circumferentially arranged ports opening through the wall of said inner sleeve, said ports being longitudinally aligned with the ports of said outer sleeve and registrable therewith when said inner sleeve is in the first position thereby to provide communication between the outside of said adapter and the bore of said inner sleeve and for being out of registration when said inner sleeve is rotated in the second position, whereby in the first position the ports of the said inner and outer sleeves are in registration for fluid communication from the bore to the exterior of said adapter and the bore of said inner sleeve is sealed and rotation of said inner sleeve to said second position simultaneously moves said ports out of registration thereby sealing the wall of said adapter and aligns the opening in the bore of the inner sleeve with the opening of the outer sleeve thereby providing fluid communication through the bore of said inner sleeve.
Claim 2
Dependent Claim
440 words
An adapter for medical equipment designed for endotracheal and esophageal intubation, said adapter comprising: an outer sleeve having an open upper end and a lower end and a bore extending therebetween, a portion of said sleeve adjacent the lower end being adapted to be received in a tube for esophageal and endotracheal intubation, a wall member extending across the bore adjacent the lower end of said outer sleeve, said wall member having a first opening therein; the center of which is eccentrically disposed with respect to the longitudinal axis of the bore, and said outer sleeve further including a plurality of circumferentially arranged ports in the wall thereof located intermediate the upper end and the wall member; an inner sleeve having an open upper and lower end, and a bore extending therebetween, said inner sleeve mounted within said outer sleeve and rotatable therein between a first and a second position with respect to said outer sleeve, the lower end of said inner sleeve being located adjacent the wall member of said outer sleeve, an inwardly extending member extending across a circumferential portion of the lower end of the bore of said inner sleeve defining a second opening at said lower end eccentrically disposed with respect to the longitudinal axis of said inner sleeve and in alignment with said first opening, whereby said inwardly extending member cooperates with the wall member of said outer sleeve to seal the bore of said inner sleeve when said inner sleeve is in the first position and the second opening of the inner sleeve is aligned with the first opening of said outer sleeve when said inner sleeve is in the second position, a plurality of circumferentially arranged ports opening through the wall of said inner sleeve, said ports being longitudinally aligned with the ports of said outer sleeve and registrable therewith when said inner sleeve is in the first position thereby to provide communication between the outside of said adapter and the bore of said inner sleeve and for being out of registration when said inner sleeve is rotated in the second position, whereby in the first position the ports of the said inner and outer sleeves are in registration for fluid communication from the bore to the exterior of said adapter and the bore of said inner sleeve is sealed and rotation of said inner sleeve to said second position simultaneously moves said ports out of registration thereby sealing the wall of said adapter and aligns the opening in the bore of the inner sleeve with the opening of the outer sleeve thereby providing fluid communication through the bore of said inner sleeve.
Claim 3
Dependent Claim
26 words
The adapter of claim 1 further including means for limiting the rotation of said inner sleeve in said outer sleeve between the first and second positions.
Claim 4
Dependent Claim
55 words
The adapter of claim 1 wherein a portion of the bore of said inner sleeve is biased inwardly in the direction of the lower end beginning at a point spaced away from the lower end thereby to define said inwardly extending member and to provide streamlined flow through said bore to the eccentrially disposed opening.
Claim 5
Dependent Claim
23 words
The adapter of claim 1 wherein the upper end of said inner sleeve extends longitudinally beyond the upper end of said outer sleeve.
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) | 1979-04-06 | 1979-10-06 | 1980-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-06 | 1983-10-06 | 1984-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-06 | 1987-10-06 | 1988-04-06 | $7700.00 | Window Closed / Lapsed |