US3659611A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tracheal tube seal
Assignee: Dow Silicones Corp
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Filing: 1969-12-15
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Granted: 1972-05-02
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Expires: 1989-12-15
Abstract
Abstract Improvement in tracheostomy and endotracheal tubes for effecting a substantial air seal between the tube and the trachea. There is provided on the periphery of the indwelling portion of the device a series of thin resilient, circular flanges, of silicone rubber, for example. The flanges bend for insertion and withdrawal and engage the wall of the trachea to form an air seal therewith.
Inventors
- 👤 Don R Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:30
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/04; A61M16/0465; A61M16/0488; A61M16/0497
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
117 words
In a tracheal tube comprising a proximal end of the device and an elongated tubular portion extending from said proximal end to the distal end of the device, said tubular portion being designed for insertion into the trachea, the improvement which comprises: at least one, thin, solid, resilient disc-like flange around the periphery of said tubular portion, said flange having a diameter slightly larger than the normal diameter of the tracheal lumen so that when the tubular portion is inserted into a trachea the flange will be deformed to concave shape to form a substantially airtight seal with the tracheal lumen, said flange having sufficient rigidity to regain its disc-like configuration after being bent out of shape.
Claim 2
Dependent Claim
117 words
In a tracheal tube comprising a proximal end of the device and an elongated tubular portion extending from said proximal end to the distal end of the device, said tubular portion being designed for insertion into the trachea, the improvement which comprises: at least one, thin, solid, resilient disc-like flange around the periphery of said tubular portion, said flange having a diameter slightly larger than the normal diameter of the tracheal lumen so that when the tubular portion is inserted into a trachea the flange will be deformed to concave shape to form a substantially airtight seal with the tracheal lumen, said flange having sufficient rigidity to regain its disc-like configuration after being bent out of shape.
Claim 3
Dependent Claim
13 words
The improvement as defined in claim 1 wherein said flange is silicone rubber.
Claim 4
Dependent Claim
12 words
The improvement as defined in claim 1 wherein said flange is circular.
Claim 5
Dependent Claim
31 words
The improvement as defined in claim 1 wherein a plurality of said flanges are mounted in spaced parallel relationship perpendicular to the axis of said tubular portion near its distal end.
Claim 6
Dependent Claim
13 words
The improvement as defined in claim 4 wherein said flanges are silicone rubber.
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) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |