US3939840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Operation endoscope
Assignee: Storz Endoskop GmbH
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Filing: 1974-07-18
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Granted: 1976-02-24
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Expires: 1994-07-18
Abstract
Abstract The elongated, hollow, thin-walled metal shaft of an operation endoscope is lined internally throughout its length by a separate thin-walled sleeve of electrical insulating material, the shaft and sleeve being mounted removably on a common head independently of each other in such manner that they are separable by relative longitudinal movement in the direction by which the sleeve is retracted rearwardly relative to the shaft, thereby affording retraction and replacement of the sleeve without removing the shaft from the operation site.
Inventors
- 👤 Karl Storz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:57
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/307; A61B17/00; A61B17/32; A61B17/320016; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1485; A61B2018/00053; A61B2018/00184; A61B2018/00196; A61B2217/00; A61B2217/002; A61B2217/005; A61B2217/007
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
129 words
An operation endoscope, comprising: a. an electrotome including an electrode, an elongated operating rod connected to said electrode and a head member slidably supporting the operating rod for longitudinal movement relative thereto, b. an elongated hollow sleeve of electrical insulating material mounted at its rearward end on the head member and extending forwardly therefrom freely around the operating rod, and c. an elongated hollow metal endoscope shaft freely encircling the sleeve and mounted removably at its rearward end on the head member independently of the sleeve, whereby the endoscope shaft and sleeve are separable from each other by relative longitudinal movement in the direction by which the sleeve is retracted rearwardly relative to the shaft, d. the sleeve extending forwardly at least to the forward end of the shaft.
Claim 2
Dependent Claim
129 words
An operation endoscope, comprising: a. an electrotome including an electrode, an elongated operating rod connected to said electrode and a head member slidably supporting the operating rod for longitudinal movement relative thereto, b. an elongated hollow sleeve of electrical insulating material mounted at its rearward end on the head member and extending forwardly therefrom freely around the operating rod, and c. an elongated hollow metal endoscope shaft freely encircling the sleeve and mounted removably at its rearward end on the head member independently of the sleeve, whereby the endoscope shaft and sleeve are separable from each other by relative longitudinal movement in the direction by which the sleeve is retracted rearwardly relative to the shaft, d. the sleeve extending forwardly at least to the forward end of the shaft.
Claim 3
Dependent Claim
20 words
The operation endoscope of claim 1 wherein the sleeve is connected detachably at its rearward end to the head member.
Claim 4
Dependent Claim
35 words
The operation endoscope of claim 1 wherein the sleeve is provided with a rolled-in portion in the longitudinal direction thereof which forms a washing duct with the adjacent inner surface of the separable endoscope shaft.
References Cited (Backward Citations)
US1952617A
Cited
FR767414A
Cited
US2018335A
Cited
FR1020980A
Cited
US2888017A
Cited
US3294085A
Cited
US3850175A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-23 | 1979-08-25 | 1980-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-23 | 1983-08-25 | 1984-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-23 | 1987-08-25 | 1988-02-24 | $7700.00 | Window Closed / Lapsed |