US3791379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve for endoscopes
Assignee: Individual
•
Filing: 1971-09-02
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Granted: 1974-02-12
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Expires: 1991-09-02
Abstract
Abstract Endoscopes having a shaft and a head at the proximal end. The head has ducts connected to a source and drain of fluid for irrigating the body and a valve member located in the head rotatable between a first position permitting entry of the fluid and a second position allowing removal of the fluid.
Inventors
- 👤 K Storz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:20
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/00064; A61B1/00066; A61B1/00068; A61B1/12; F; F16; F16K; F16K11/00; F16K11/02; F16K11/08; F16K11/083; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86638; Y10T137/86646; Y10T137/86662; Y10T137/86863; Y10T137/86871
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
153 words
An endoscope for treating and irrigating the body comprising a tubular shaft having a hollow head axially aligned with said shaft at the proximal end, and an electrode mounted within said shaft and movable axially in respect to said head and shaft, an inlet duct and an outlet duct radially entering said head for passing fluid into and out of said shaft, a valve member located within said head comprising a rotatable spool having an axial bore aligned with said shaft and head, a pair of radial passages formed in said spool, and means extending radially through said head for rotating said spool about the central axis of said head, said spool and said head cooperating to form a rotatable valve movable between a first position wherein one of said passages is aligned with said inlet duct and a second position wherein the other of said passages is aligned with said outlet duct.
Claim 2
Dependent Claim
153 words
An endoscope for treating and irrigating the body comprising a tubular shaft having a hollow head axially aligned with said shaft at the proximal end, and an electrode mounted within said shaft and movable axially in respect to said head and shaft, an inlet duct and an outlet duct radially entering said head for passing fluid into and out of said shaft, a valve member located within said head comprising a rotatable spool having an axial bore aligned with said shaft and head, a pair of radial passages formed in said spool, and means extending radially through said head for rotating said spool about the central axis of said head, said spool and said head cooperating to form a rotatable valve movable between a first position wherein one of said passages is aligned with said inlet duct and a second position wherein the other of said passages is aligned with said outlet duct.
Claim 3
Dependent Claim
35 words
The endoscope according to claim 1 wherein said outlet duct is larger than said inlet duct and said passages in said valve member correspond respectively with the inlet and outlet ducts with which they align.
Claim 4
Dependent Claim
26 words
The endoscope according to claim 1 including a second valve located within the inlet duct for regulating the supply of liquid to said first mentioned valve.
Claim 5
Dependent Claim
42 words
The endoscope according to claim 1 wherein said head has a conical interior, and said valve member comprises a spool having a conical outer surface conforming thereto and an axial passage therein communicating with said shaft and each of said radial passages.
Claim 6
Dependent Claim
34 words
The endoscope according to claim 4 wherein said head is provided with a transverse slot and said spool is provided with a lever extending radially through said slot whereby said spool may be rotated.
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) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |