Patent US4263897A successfully refreshed from Google Patents.
US4263897A
Expired / Lapsed
US
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Endoscope
Assignee: YOON INBAE 2101 HIGHLAND RIDGE RD PHOENIX MD 21131
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Filing: 1979-05-04
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Granted: 1981-04-28
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Expires: 1999-05-04
Abstract
Abstract An endoscope consists of a sheath having a passage extending therethrough, a water-feeding inlet portion and a water-draining outlet portion disposed near the proximal end portion of the sheath and each having a valve. The inlet portion and the outlet portion are provided with connection hoses each consisting of two layers of flexible coil tubes. The flexibility of the connection hose can set the inlet and outlet portions in any direction, thereby enabling the endoscope to be easily handled without being obstructed by the inlet and outlet portions.
Inventors
- 👤 Toshiki Terayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:51
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/00064; A61B1/00066; A61B1/00068; A61B1/12; A61B1/307; A61B1/313
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
125 words
In an endoscope for use in either one of a womb and a urinary bladder, comprising a sheath having a distal end and a proximal end for insertion into a body cavity at the distal end, a passage extending through the sheath and opened at the distal end of the sheath, a water-feeding inlet portion and a water-draining outlet portion each provided at the proximal end of the sheath, valves each provided in the inlet portion and the outlet portion, the improvement wherein at least part of the inlet portion and the outlet portion is formed into a flexible connection hose bendable in any direction and to any extent, said flexible hose including means for maintaining the position into which said flexible hose is bent.
Claim 2
Dependent Claim
125 words
In an endoscope for use in either one of a womb and a urinary bladder, comprising a sheath having a distal end and a proximal end for insertion into a body cavity at the distal end, a passage extending through the sheath and opened at the distal end of the sheath, a water-feeding inlet portion and a water-draining outlet portion each provided at the proximal end of the sheath, valves each provided in the inlet portion and the outlet portion, the improvement wherein at least part of the inlet portion and the outlet portion is formed into a flexible connection hose bendable in any direction and to any extent, said flexible hose including means for maintaining the position into which said flexible hose is bent.
Claim 3
Dependent Claim
25 words
The endoscope according to claim 1, wherein said connection hose comprises a coil tube formed by winding a flexible wire having a circular cross section.
Claim 4
Dependent Claim
87 words
The endoscope according to claim 2, wherein said connection hose further comprises a second coil tube formed by winding a flexible wire having a triangular cross section, said second coil tube surrounding the first-mentioned coil tube at a same pitch thereof with one of apices of the triangular section disposed between adjacent turns of the first-mentioned coil tube and with both lateral sides of the second tube adjacent to said one of the apices pressed against peripheral surfaces of the corresponding turns of the first-mentioned coil tube.
Claim 5
Dependent Claim
22 words
The endoscope according to any one of the preceding claims, wherein the connection hose is sealingly surrounded by a flexible sealing tube.
References Cited (Backward Citations)
US434748A
Cited
FR400531A
Cited
US2176391A
Cited
US2558763A
Cited
DE1791280A1
Cited
US3771522A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-27 | 1984-10-27 | 1985-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-27 | 1988-10-27 | 1989-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-27 | 1992-10-27 | 1993-04-28 | $7700.00 | Window Closed / Lapsed |