Patent US4865017A successfully refreshed from Google Patents.
US4865017A
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Endoscopic operation instrument
Assignee: Olympus Corp
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Filing: 1988-06-23
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Granted: 1989-09-12
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Expires: 2008-06-23
Abstract
Abstract An endoscopic operation instrument according to the present invention comprises an operating portion formed by a plurality of elastic wires or a folded-back elastic wire received in the distal end of a flexible sheath, the elastic wires or the folded-back elastic wire being bent in the intermediate portion, wherein the bent portions of the elastic wires are located at different positions. Thus, the handling of the instrument is facilitated when the operating portion is pulled in and pushed out.
Inventors
- 👤 Minoru Shinozuka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:35
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/22; A61B17/221; A61B2017/2212
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
53 words
An endoscopic operation instrument comprising an operating portion formed by a plurality of elastic wires received in the distal end of a flexible sheath, the elastic wires being bent in the intermediate portion, wherein the bent portions of the elastic wires are located at different positions in the axial direction of the sheath.
Claim 2
Dependent Claim
53 words
An endoscopic operation instrument comprising an operating portion formed by a plurality of elastic wires received in the distal end of a flexible sheath, the elastic wires being bent in the intermediate portion, wherein the bent portions of the elastic wires are located at different positions in the axial direction of the sheath.
Claim 3
Dependent Claim
23 words
An endoscopic operation instrument according to claim 1, wherein the endoscopic operation instrument is a basket type forceps having a basket-shaped operating portion.
Claim 4
Dependent Claim
25 words
An endoscopic operation instrument according to claim 2, wherein the respective elastic wires forming the basket-shaped operating portion are substantially hexagonal in their side view.
Claim 5
Dependent Claim
25 words
An endoscopic operation instrument according to claim 2, wherein the respective elastic wires forming the basket-shaped operating portion are substantially octagonal in their side view.
Claim 6
Dependent Claim
19 words
An endoscopic operation instrument according to claim 1, 2, 3 or 4, wherein the elastic wires are stranded wires.
Claim 7
Dependent Claim
18 words
An endoscopic operation instrument according to claim 1, 2, or 4, wherein the elastic wires are single wires.
Claim 8
Dependent Claim
52 words
An endoscopic operation instrument comprising an operating portion formed by a folded-back elastic wire received in the distal end of a flexible sheath, the elastic wire being bent in the intermediate portion, wherein the bent portions of the elastic wire are located at different positions in the axial direction of the sheath.
Claim 9
Dependent Claim
52 words
An endoscopic operation instrument comprising an operating portion formed by a folded-back elastic wire received in the distal end of a flexible sheath, the elastic wire being bent in the intermediate portion, wherein the bent portions of the elastic wire are located at different positions in the axial direction of the sheath.
Claim 10
Dependent Claim
16 words
An endoscopic instrument according to claim 8, wherein the endoscopic operation instrument is a diathermic snare.
Claim 11
Dependent Claim
18 words
An endoscopic instrument according to claim 7 or 8, wherein the folded-back elastic wire is a stranded wire.
Claim 12
Dependent Claim
18 words
An endoscopic instrument according to claim 7 or 8, wherein the folded-back elastic wire is a single wire.
References Cited (Backward Citations)
US4682599A
Cited
US4592341A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-11 | 1993-03-13 | 1993-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-11 | 1997-03-13 | 1997-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-11 | 2001-03-13 | 2001-09-12 | $7700.00 | Window Closed / Lapsed |