US3593706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible or partly flexible gastroscope
Assignee: Individual
•
Filing: 1969-01-27
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Granted: 1971-07-20
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Expires: 1989-01-27
Abstract
Abstract A flexible gastroscope with a fiber-optical image conductor has a cylindrical distal head formed with a lateral viewing port next to an objective working into the image conductor, an adjoining lateral exit aperture for surgical implements, and a lateral illumination window just beyond that aperture. The illumination window leads into a chamber which contains two axially extending, laterally juxtaposed light sources, i.e. a U-shaped flash tube alongside the window and a lamp positioned to radiate through the flash tube and the window in series.
Inventors
- 👤 Herbert Schubert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:29
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/04; A61B1/00163; A61B1/00165; A61B1/00174; A61B1/00177; A61B1/06; A61B1/0615; A61B1/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
101 words
An endoscopic instrument comprising a generally cylindrical elongate head having a chamber at one end, a lateral viewing port adjacent the other end and a lateral illumination window communicating with said chamber; image-conducting means terminating at said viewing port and extending therefrom axially to said other end; and a pair of laterally juxtaposed, elongate light sources extending axially within said chamber alongside said window, one of said light sources being positioned close to said window, the other of said light sources being disposed remote from said window for radiating through said one of said light sources and said window in series.
Claim 2
Dependent Claim
101 words
An endoscopic instrument comprising a generally cylindrical elongate head having a chamber at one end, a lateral viewing port adjacent the other end and a lateral illumination window communicating with said chamber; image-conducting means terminating at said viewing port and extending therefrom axially to said other end; and a pair of laterally juxtaposed, elongate light sources extending axially within said chamber alongside said window, one of said light sources being positioned close to said window, the other of said light sources being disposed remote from said window for radiating through said one of said light sources and said window in series.
Claim 3
Dependent Claim
26 words
An instrument as defined in claim 1 wherein said one of said light sources is a generally U-shaped tube with legs extending axially of said head.
Claim 4
Dependent Claim
29 words
An instrument as defined in claim 2 wherein said other of said light sources is a tube of generally semicircular cross section having a flat side facing said legs.
Claim 5
Dependent Claim
51 words
An instrument as defined in claim 1 wherein said head is provided with a first axially extending passage for said image-conducting means and with a second axially extending passage for the insertion of a surgical implement, said second passage terminating in a lateral exit aperture between said port and said window.
Claim 6
Dependent Claim
37 words
An instrument as defined in claim 4 wherein said head includes an internal insulating member interposed between said passages and said chamber, said member forming sockets for said light sources included in an external energizing circuit therefor.
Claim 7
Dependent Claim
45 words
An instrument as defined in claim 5 wherein said other of said light sources is provided with a base on the side remote from said window, said base being nonrotatably plugged into one of said sockets and being conductively connected with the last-mentioned light source.
Claim 8
Dependent Claim
18 words
An instrument as defined in claim 1 wherein said one of said light sources is a flash tube.
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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |