US4612927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Instrument for keeping clear the upper respiratory passages
Assignee: Individual
•
Filing: 1985-01-08
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Granted: 1986-09-23
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Expires: 2005-01-08
Abstract
Abstract The invention relates to an instrument for keeping clear the upper respiratory passages and for performing intubations, in which a tube which is to be inserted may have its distal extremity moved as far as into the windpipe via a passage acting as a guide. The passage is constructed as a channel extending within the instrument shaft, whereas the distal instrument extremity comprises a head before which terminates the channel and which is intended to be placed in contact against the larynx upon inserting the instrument. The instrument head acting as a stop will thus limit the maximum depth of insertion.
Inventors
- 👤 Christian Kruger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:24
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/04; A61M16/0488
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
188 words
In an instrument for keeping clear the upper respiratory passages and for performing intubations, comprising a shaft with a passage to enable a tube to be inserted with its distal extremity moving as far as into the trachea with said passage acting as a guide, an improvement characterized in that the passage is constructed as a channel extending within the shaft of the instrument and the distal extremity of the instrument comprises a head before which terminates the said channel and which at the time of inserting the instrument is to be placed in contact wit the larynx and acts as a stop to limit the maximum distance of insertion, including a ramp formed at the distal extremity of the channel, the surface of said ramp rising from the bottom of the channel, and wherein said head comprises two mutually overlapping flaps which are flexibly displaceable rearwards upon coming into contact with the larynx, and wherein the proximal extremities of the flaps lie in the extension of the ramp surface and form a centering guide for a tube to be pushed over the ramp in the distal direction.
Claim 2
Dependent Claim
188 words
In an instrument for keeping clear the upper respiratory passages and for performing intubations, comprising a shaft with a passage to enable a tube to be inserted with its distal extremity moving as far as into the trachea with said passage acting as a guide, an improvement characterized in that the passage is constructed as a channel extending within the shaft of the instrument and the distal extremity of the instrument comprises a head before which terminates the said channel and which at the time of inserting the instrument is to be placed in contact wit the larynx and acts as a stop to limit the maximum distance of insertion, including a ramp formed at the distal extremity of the channel, the surface of said ramp rising from the bottom of the channel, and wherein said head comprises two mutually overlapping flaps which are flexibly displaceable rearwards upon coming into contact with the larynx, and wherein the proximal extremities of the flaps lie in the extension of the ramp surface and form a centering guide for a tube to be pushed over the ramp in the distal direction.
References Cited (Backward Citations)
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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) | 1989-09-22 | 1990-03-24 | 1990-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-22 | 1994-03-24 | 1994-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-22 | 1998-03-24 | 1998-09-23 | $7700.00 | Window Closed / Lapsed |