US6077274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Basket-type grasping tool adapted for use in combination with an endoscope
Assignee: Pentax Corp
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Filing: 1998-09-08
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Granted: 2000-06-20
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Expires: 2018-09-08
Abstract
Abstract A basket-type grasping tool, adapted for use in combination with an endoscope, for capturing a foreign material or the like into a basket section. Axially corresponding portions of elastic wires are each twisted in the same direction about a center axis of a basket section. Guide paths, through which the elastic wires respectively pass, are formed on an inner face of a tip-end mouth of a sheath.
Inventors
- 👤 Teruo Ouchi
- 👤 Miyuki Nishimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:27
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/22; A61B17/221; A61B2017/2212
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
167 words
A basket-type grasping tool adapted for use in combination with an endoscope, wherein: a basket section formed by at least three elastic wires bundled at both of front and rear ends thereof being extractable from and retractable into a tip end of a sheath so that said basket section is expanded into a basket-like shape by the elasticity of said basket section when said basket section is extracted from said tip end of said sheath, and contracted when said basket section is retracted into said tip end of said sheath, said tip end of said sheath having a center axis, and said basket section having a center axis which is an extension of said center axis of said tip end; at least first axially corresponding portions of said elastic wires being bent about said center axis of said basket section in the same direction; and guide paths through which said elastic wires respectively pass being formed on an inner face of a tip-end mouth of said sheath.
Claim 2
Dependent Claim
167 words
A basket-type grasping tool adapted for use in combination with an endoscope, wherein: a basket section formed by at least three elastic wires bundled at both of front and rear ends thereof being extractable from and retractable into a tip end of a sheath so that said basket section is expanded into a basket-like shape by the elasticity of said basket section when said basket section is extracted from said tip end of said sheath, and contracted when said basket section is retracted into said tip end of said sheath, said tip end of said sheath having a center axis, and said basket section having a center axis which is an extension of said center axis of said tip end; at least first axially corresponding portions of said elastic wires being bent about said center axis of said basket section in the same direction; and guide paths through which said elastic wires respectively pass being formed on an inner face of a tip-end mouth of said sheath.
Claim 3
Dependent Claim
33 words
A basket-type grasping tool according to claim 1, wherein said tip-end mouth of said sheath has a polygonal section shape, and corner portions of said polygonal section shape serve as said guide paths.
Claim 4
Dependent Claim
35 words
A basket-type grasping tool according to claim 1, wherein a plurality of grooves are formed in an inner peripheral face of said tip-end mouth of said sheath, and said grooves serve as said guide paths.
Claim 5
Dependent Claim
95 words
A basket-type grasping tool according to claim 1, wherein: each of said elastic wires has a largely expandable middle portion, a forward portion extending forwardly from said middle portion, and a rearward portion extending rearwardly of said middle portion; at least one of said forward and rearward portions of said each elastic wire is not bent about said center axis of said basket section; the rest of said forward, middle and rearward portions of said each elastic wire is partially or entirely bent about said center axis of said basket section in the same direction.
Claim 6
Dependent Claim
26 words
A basket-type grasping tool according to claim 4, wherein said rearward portion is bent about said center axis of said basket section in the same direction.
Claim 7
Dependent Claim
26 words
A basket-type grasping tool according to claim 4, wherein said middle portion is bent about said center axis of said basket section in the same direction.
Claim 8
Dependent Claim
25 words
A basket-type grasping tool according to claim 1, wherein each of said elastic wires forming said basket section is bent at a plurality of places.
Claim 9
Dependent Claim
25 words
A basket-type grasping tool according to claim 1, wherein each of said elastic wires forming said basket section is bent to present a smooth curve.
Claim 10
Dependent Claim
39 words
A basket-type grasping tool according to claim 1, wherein said elastic wires have second axially corresponding portions which are not bent about said center axis of said basket section and which are continuous with respective first axially corresponding portions.
Claim 11
Dependent Claim
207 words
A basket-type grasping tool adapted for use in combination with an endoscope, wherein: a basket section formed by at least three elastic wires bundled at both of front and rear ends thereof being extractable from and retractable into a tip end of a sheath so that said basket section is expanded into a basket-like shape by the elasticity of said basket section when said basket section is extracted from said tip end of said sheath, and contracted when said basket section is retracted into said tip end of said sheath, said tip end of said sheath having a center axis, and said basket section having a center axis which is an extension of said center axis of said tip end; each of said elastic wires having a largely expandable middle portion, a forward portion extending forwardly from said middle portion, and a rearward portion extending rearwardly of said middle portion; at least one of said forward and rearward portions of said each elastic wire not being bent about said center axis of said basket section; and the rest of said forward, middle and rearward portions of said each elastic wire being partially or entirely bent about said center axis of said basket section in the same direction.
Claim 12
Dependent Claim
207 words
A basket-type grasping tool adapted for use in combination with an endoscope, wherein: a basket section formed by at least three elastic wires bundled at both of front and rear ends thereof being extractable from and retractable into a tip end of a sheath so that said basket section is expanded into a basket-like shape by the elasticity of said basket section when said basket section is extracted from said tip end of said sheath, and contracted when said basket section is retracted into said tip end of said sheath, said tip end of said sheath having a center axis, and said basket section having a center axis which is an extension of said center axis of said tip end; each of said elastic wires having a largely expandable middle portion, a forward portion extending forwardly from said middle portion, and a rearward portion extending rearwardly of said middle portion; at least one of said forward and rearward portions of said each elastic wire not being bent about said center axis of said basket section; and the rest of said forward, middle and rearward portions of said each elastic wire being partially or entirely bent about said center axis of said basket section in the same direction.
Claim 13
Dependent Claim
31 words
A basket-type grasping tool according to claim 10, wherein guide paths through which said elastic wires respectively pass are formed on an inner face of a tip-end mouth of said sheath.
Claim 14
Dependent Claim
26 words
A basket-type grasping tool according to claim 10, wherein said rearward portion is bent about said center axis of said basket section in the same direction.
Claim 15
Dependent Claim
26 words
A basket-type grasping tool according to claim 10, wherein said middle portion is bent about said center axis of said basket section in the same direction.
Claim 16
Dependent Claim
25 words
A basket-type grasping tool according to claim 10, wherein each of said elastic wires forming said basket section is bent at a plurality of places.
Claim 17
Dependent Claim
25 words
A basket-type grasping tool according to claim 10, wherein each of said elastic wires forming said basket section is bent to present a smooth curve.
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) | 2003-06-20 | 2003-12-20 | 2004-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-06-20 | 2007-12-20 | 2008-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-06-20 | 2011-12-20 | 2012-06-20 | $7700.00 | Window Closed / Lapsed |