Patent US4392485A successfully refreshed from Google Patents.
US4392485A
Expired / Lapsed
US
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Endoscope
Assignee: Richard Wolf GmbH
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Filing: 1981-04-21
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Granted: 1983-07-12
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Expires: 2001-04-21
Abstract
Abstract The invention relates to endoscopes specially laparoscopes of known art with an external shaft through which passes a channel for guiding instruments and a fibre light conductor and an optic. According the invention the channel of the shaft is increased in its inner diameter and the diameter of the optic is decreased in such a manner that now not only usual instruments being present in a practice but also instruments can pass the channel which have an increased diameter for instance the fixing of clips or elastic rings onto a Fallopian tube.
Inventors
- 👤 Siegfried Hiltebrandt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:42
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/00163; A61B1/00195; A61B1/00165
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
144 words
Endoscope having an external shaft through which passes a guide channel for receiving instruments, a fibre light conductor and an optic, the proximal part of said optic being turned away from one side of the proximal part of the shaft, and in which the inner diameter of the shaft is at least 9.7 mm but maximal 10.4 mm, wherein the guide channel for receiving instruments of one kind for the treatment of the abdomen and also separate instruments of another kind for fixing clips or elastic rings onto an internal organ is characterized with a diameter of 70-75% of the shaft diameter for receiving both kinds of instruments, and a second channel for receiving an optic having a diameter of 20-25% of the shaft diameter so that together the instrument channel and optic channel occupy about 95% of the internal diameter of said shaft.
Claim 2
Dependent Claim
144 words
Endoscope having an external shaft through which passes a guide channel for receiving instruments, a fibre light conductor and an optic, the proximal part of said optic being turned away from one side of the proximal part of the shaft, and in which the inner diameter of the shaft is at least 9.7 mm but maximal 10.4 mm, wherein the guide channel for receiving instruments of one kind for the treatment of the abdomen and also separate instruments of another kind for fixing clips or elastic rings onto an internal organ is characterized with a diameter of 70-75% of the shaft diameter for receiving both kinds of instruments, and a second channel for receiving an optic having a diameter of 20-25% of the shaft diameter so that together the instrument channel and optic channel occupy about 95% of the internal diameter of said shaft.
Claim 3
Dependent Claim
10 words
An endoscope according to claim 1 which is a laparoscope.
References Cited (Backward Citations)
US3261351A
Cited
US3945375A
Cited
US3941121A
Cited
US4086919A
Cited
US4217891A
Cited
US4294234A
Cited
US4261346A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-07-11 | 1987-01-10 | 1987-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-11 | 1991-01-10 | 1991-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-11 | 1995-01-10 | 1995-07-12 | $7700.00 | Window Closed / Lapsed |