Patent US3913565A successfully refreshed from Google Patents.
US3913565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Guide tube for a treating instrument to be inserted into body cavity
Assignee: Olympus Corp
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Filing: 1974-04-25
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Granted: 1975-10-21
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Expires: 1994-04-25
Abstract
Abstract There is provided a guide tube for guiding a tubular treating instrument to be inserted into a patient''s body cavity. Said guide tube includes a tubular, flexible main body. A cuff is attached to said main body in the proximity of the forward end thereof, and is so adapted as to be expanded by the operation of air or liquid feed from the base end portion of the main body. The main body is further extended forwardly from the cuffattached portion, and said extended portion is formed more flexible than the main body. The guide tube is fixed within the body cavity by the expansion of the cuff, and the treating instrument is inserted up to a predetermined position in the interior of the body cavity with the guide tube taken as a guide.
Inventors
- 👤 Ichizo Kawahara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:41
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/00147; A61B1/00154; A61B1/00064; A61B1/00071; A61B1/0008; A61B1/00082; A61B1/273; A61B1/2736; A61M; A61M25/00; A61M25/01; A61M25/0105; A61M25/0116; A61M25/10; A61M25/0108
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
219 words
A guide tube for guiding a body cavity-treating instrument up to a predetermined position in a body cavity comprising: a. a flexible tubular main body having a forward end and a base end at which the treating instrument is inserted into the main body, said main body including an inner tube, an outer tube having an aperture and a helical winding wound between the inner and outer tubes around the outer periphery of the inner tube; b. a cuff mounted on said main body in the proximity of the forward end thereof and adapted to be expanded by the entry thereinto of fluid from the base end of the main body first through a space defined by said helical winding with the inner and outer tubes and then through said aperture thereby to be pressed against inner walls of the body cavity to fix the forward end of the guide tube to the interior oF the body cavity; and c. a flexible tube section further extended forwardly from the forward end of the main body and formed more flexible than the main body, whereby the forward end of the treating instrument inserted from the base end into the main body is sent forth from said flexible tube section and carried up to the predetermined position in the body cavity.
Claim 2
Dependent Claim
219 words
A guide tube for guiding a body cavity-treating instrument up to a predetermined position in a body cavity comprising: a. a flexible tubular main body having a forward end and a base end at which the treating instrument is inserted into the main body, said main body including an inner tube, an outer tube having an aperture and a helical winding wound between the inner and outer tubes around the outer periphery of the inner tube; b. a cuff mounted on said main body in the proximity of the forward end thereof and adapted to be expanded by the entry thereinto of fluid from the base end of the main body first through a space defined by said helical winding with the inner and outer tubes and then through said aperture thereby to be pressed against inner walls of the body cavity to fix the forward end of the guide tube to the interior oF the body cavity; and c. a flexible tube section further extended forwardly from the forward end of the main body and formed more flexible than the main body, whereby the forward end of the treating instrument inserted from the base end into the main body is sent forth from said flexible tube section and carried up to the predetermined position in the body cavity.
Claim 3
Dependent Claim
222 words
A guide tube for guiding a body cavity-treating instrument up to a predetermined position in a body cavity comprising: a. a flexible tubular main body having a forward end and a base end at which the treating instrument is inserted into the main body, said main body including an inner tube, an outer tube having an aperture and a net-like member wound between the inner and outer tubes around the outer periphery of the inner tube for preventing said inner and outer tubes from being buckled, b. a cuff mounted on said main body in the proximity of the forward end thereof and adapted to be expanded by the entry thereinto of fluid from the base end of the main body first through the meshes of said net-like member and then through said aperture thereby to be pressed against inner walls of the body cavity to fix the forward end of the guide tube to the interior of the body cavity; and c. a flexible tube section further extended forwardly from the forward end of the main body and formed more flexible than the main body, whereby the forward end of the treating instrument inserted from the base end into the main body is sent forth from said flexible tube section and carried up to the predetermined position in the body cavity.
Claim 4
Dependent Claim
222 words
A guide tube for guiding a body cavity-treating instrument up to a predetermined position in a body cavity comprising: a. a flexible tubular main body having a forward end and a base end at which the treating instrument is inserted into the main body, said main body including an inner tube, an outer tube having an aperture and a net-like member wound between the inner and outer tubes around the outer periphery of the inner tube for preventing said inner and outer tubes from being buckled, b. a cuff mounted on said main body in the proximity of the forward end thereof and adapted to be expanded by the entry thereinto of fluid from the base end of the main body first through the meshes of said net-like member and then through said aperture thereby to be pressed against inner walls of the body cavity to fix the forward end of the guide tube to the interior of the body cavity; and c. a flexible tube section further extended forwardly from the forward end of the main body and formed more flexible than the main body, whereby the forward end of the treating instrument inserted from the base end into the main body is sent forth from said flexible tube section and carried up to the predetermined position in the body cavity.
Claim 5
Dependent Claim
201 words
A guide tube for guiding a body cavity-treating instrument up to a predetermined position in a body cavity comprising: a. a flexible tubular main body having a forward end and a base end at which the treating instrument is inserted into the main body; b. a cuff mounted on said main body in the proximity of the forward end thereof and adapted to be exapnded by the entry thereinto of fluid from the base end of the main body, so as to be pressed against inner walls of the body cavity thereby to fix the forward end of the guide tube to the interior of the body cavity; c. a flexible tube section further extended forwardly from the forward end of the main body and formed more flexible than the main body, whereby the forward end of the treating instrument inserted from the base end into the main body is sent forth from said flexible tube section and carried up to the predetermined position in the body cavity; and d. a metallic cap mounted on the base end of the main body and formed with a tube insertion hole for allowing a treating instrument to be inserted into the main body.
Claim 6
Dependent Claim
201 words
A guide tube for guiding a body cavity-treating instrument up to a predetermined position in a body cavity comprising: a. a flexible tubular main body having a forward end and a base end at which the treating instrument is inserted into the main body; b. a cuff mounted on said main body in the proximity of the forward end thereof and adapted to be exapnded by the entry thereinto of fluid from the base end of the main body, so as to be pressed against inner walls of the body cavity thereby to fix the forward end of the guide tube to the interior of the body cavity; c. a flexible tube section further extended forwardly from the forward end of the main body and formed more flexible than the main body, whereby the forward end of the treating instrument inserted from the base end into the main body is sent forth from said flexible tube section and carried up to the predetermined position in the body cavity; and d. a metallic cap mounted on the base end of the main body and formed with a tube insertion hole for allowing a treating instrument to be inserted into the main body.
Claim 7
Dependent Claim
36 words
A guide tube for a body cavity-treating instrument as described in claim 3 wherein said metallic cap is formed with a passage for allowing fluid to be sent from outside into the interior of the cuff.
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) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |