US3871358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Guiding tube for the insertion of an admissible medical implement into a human body
Assignee: Olympus Corp
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Filing: 1973-07-31
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Granted: 1975-03-18
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Expires: 1993-07-31
Abstract
Abstract A guiding tube for the insertion of an admissible medical implement into a human body which consists of an inlet member and a tube member connected to the inlet member, said tube member comprising an innermost tube unit having a passageway formed therein through which to conduct an admissible medical implement, for example, an endoscope into and out of the human body, a flexible core tube unit so disposed as to concentrically surround the innermost tube unit and an outermost tube unit so positioned as to concentrically enclose the flexible core tube unit.
Inventors
- 👤 Noboru Fukuda
- 👤 Yutaka Otani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:48
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/00147; A61B1/00154; A61B17/00; A61B17/34; A61B17/3417; A61B17/3421; A61B2017/3437
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
87 words
A guiding tube for the insertion of an admissible medical implement into a human body which comprises a tube member consisting of an innermost tube unit having a passageway formed therein through which to conduct an admissible medical implement, a flexible core tube unit concentrically surrounding the innermost tube unit in close contact, an outermost tube unit concentrically surrounding the flexible core tube unit and a pliable forward end portion open at the forward end; and an inlet member fitted to the inlet of the tube member.
Claim 2
Dependent Claim
87 words
A guiding tube for the insertion of an admissible medical implement into a human body which comprises a tube member consisting of an innermost tube unit having a passageway formed therein through which to conduct an admissible medical implement, a flexible core tube unit concentrically surrounding the innermost tube unit in close contact, an outermost tube unit concentrically surrounding the flexible core tube unit and a pliable forward end portion open at the forward end; and an inlet member fitted to the inlet of the tube member.
Claim 3
Dependent Claim
91 words
A guiding tube according to claim 1 wherein the inlet member comprises an inlet frame fitted to the inlet of the tube member, a protective ring provided on the periphery of the junction of the inlet frame and the inlet of the tube member, a cylindrical member made of liquid-absorbable resin impregnated with lubricant and inserted into the inlet frame and a ring made of liquid-nonabsorbable resin so as to act as a wiper and inserted into that portion of the inlet frame which faces the inlet of the tube member.
Claim 4
Dependent Claim
29 words
A guiding tube according to claim 1 wherein the flexible core tube unit consists of a stainless steel band helically wound about the periphery of the innermost tube unit.
Claim 5
Dependent Claim
21 words
A guiding tube according to claim 1 wherein the pliable forward end portion has the edge of its opening bent inward.
Claim 6
Dependent Claim
18 words
A guiding tube according to claim 1 wherein the pliable forWard end portion has a flat end face.
Claim 7
Dependent Claim
18 words
A guiding tube according to claim 1 wherein the pliable forward end portion has an inclined end face.
Claim 8
Dependent Claim
26 words
A guiding tube according to claim 2 wherein the cylindrical member made of liquid-absorbable resin has swollen inner walls so as to be impregnated with lubricant.
References Cited (Backward Citations)
US2793639A
Cited
US3631852A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |