Patent US2783894A successfully refreshed from Google Patents.
US3698387A
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US
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Otoscope construction
Assignee: Welch Allyn Inc
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Filing: 1969-10-07
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Granted: 1972-10-17
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Expires: 1989-10-07
Abstract
Abstract An otoscope constructed so that its head can be either open or closed, the closed head being employed when it is desired to introduce air into the ear canal. The otoscope has a generally rectangular shape and a large proximal end opening which is provided with a removable slide closure comprising a lens and lens frame of gasket material. The otoscope head and speculum portions are formed as a unitary member, and optical fibers are embedded therein to conduct light to the distal end of the speculum from a source removed therefrom.
Inventors
- 👤 William C Moore
- 👤 William S Pilgrim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:46
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/227; A61B1/2275
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
An otoscope having integrally molded head and speculum portions with an unobstructed viewing passage therethrough, said head portion having a substantially rectangular configuration in rear elevation, the head portion being formed with a rectangular rear opening extending substantially completely across the proximal end of said head portion and in communication with the viewing passage and guide ways adjacent a pair of opposite edges of the opening, a removable closure for the opening adapted to be slidably received in said ways, said closure comprising a lens and a rectangular frame for the lens formed of an elastomer with a low coefficient of friction, the elastomer frame operating as an airtight gasket between the lens and otoscope head when the closure is in position in the latter, and a bundle of light transmittinG filaments embedded in said head and speculum portions for conducting light to the distal or front end of the otoscope from a source removed therefrom.
Claim 2
Dependent Claim
156 words
An otoscope having integrally molded head and speculum portions with an unobstructed viewing passage therethrough, said head portion having a substantially rectangular configuration in rear elevation, the head portion being formed with a rectangular rear opening extending substantially completely across the proximal end of said head portion and in communication with the viewing passage and guide ways adjacent a pair of opposite edges of the opening, a removable closure for the opening adapted to be slidably received in said ways, said closure comprising a lens and a rectangular frame for the lens formed of an elastomer with a low coefficient of friction, the elastomer frame operating as an airtight gasket between the lens and otoscope head when the closure is in position in the latter, and a bundle of light transmittinG filaments embedded in said head and speculum portions for conducting light to the distal or front end of the otoscope from a source removed therefrom.
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) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |