US3598113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable laryngoscope construction
Assignee: Welch Allyn Inc
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Filing: 1968-10-09
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Granted: 1971-08-10
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Expires: 1988-10-09
Abstract
Abstract A disposable laryngoscope having a unitary plastic blade and handle. The handle is hollow and in use contains a light unit having batteries, a lamp and an operating switch. The light unit is not disposable and is removed for reuse before the blade and handle assembly is thrown away. The disposable part of the instrument includes a fiber optic bundle which carries light from the lamp within the handle to a point near the distal end of the blade.
Inventors
- 👤 William C Moore
- 👤 William S Pilgrim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:45
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/267; A61B1/00064; A61B1/00103; A61B1/06; A61B1/07
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
153 words
In combination with a nondisposable light unit having a power source, lamp and operating switch: a disposable laryngoscope comprising a hollow elongated handle, a blade integrally connected to one end of the handle, and extending therefrom in substantially right angular relationship and of such length as to extend into a larynx being examined, said handle being open at its opposite end, the handle and blade being of a unitary plastic construction, the light unit being fully enclosed with a free sliding fit in the handle, a closure member threaded on the open end of the handle to releasably hold the light unit therein, the closure member coactinG with the light unit switch whereby rotation of the former actuates the latter, and a bundle of light transmitting clad optical fibers extending from a point inside the handle adjacent the light unit lamp to a point spaced therefrom near the distal end of the blade.
Claim 2
Dependent Claim
153 words
In combination with a nondisposable light unit having a power source, lamp and operating switch: a disposable laryngoscope comprising a hollow elongated handle, a blade integrally connected to one end of the handle, and extending therefrom in substantially right angular relationship and of such length as to extend into a larynx being examined, said handle being open at its opposite end, the handle and blade being of a unitary plastic construction, the light unit being fully enclosed with a free sliding fit in the handle, a closure member threaded on the open end of the handle to releasably hold the light unit therein, the closure member coactinG with the light unit switch whereby rotation of the former actuates the latter, and a bundle of light transmitting clad optical fibers extending from a point inside the handle adjacent the light unit lamp to a point spaced therefrom near the distal end of the blade.
Claim 3
Dependent Claim
22 words
An instrument as defined in claim 1 wherein said blade includes a flange a portion of which overlies the optical fiber bundle.
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) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |