US5403324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible catheter with stone basket and ultrasonic conductor
Assignee: MICROSONIC ENGINEERING DEVICES COMPANY Inc
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Filing: 1994-01-14
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Granted: 1995-04-04
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Expires: 2014-01-14
Abstract
Abstract A flexible catheter which has a basket at one end for the capture and removal of a calculus, such as a kidney stone. The catheter includes a plurality of wires with ends forming a basket, an elongate flexible tube through which the wires pass, a handpiece supporting the tube and having a cavity, a shaft disposed in the cavity and fixedly connecting to second ends of the wires, the tube and shaft having aligned central bores, a conductor extending through the bores, and lock means for holding the shaft in a selective position.
Inventors
- 👤 Donald J. Ciervo
- 👤 Ronald Fagan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:09
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/22; A61B17/22004; A61B17/22012; A61B17/221; A61B2017/2212
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
146 words
A flexible catheter, comprising: a plurality of wires having first end portions forming a basket which expands in a forward position and contracts in a rearward position; an elongate flexible tube having a plurality of elongate peripherally spaced holes through which second ends of said respective wires pass; a handpiece having an end portion supporting said tube and having an elongate cavity; a shaft disposed in said cavity and having an end portion displaceable relative to said handpiece and said tube; connecting means fixedly connecting an end portion of said shaft to second end portions of said wires; said tube and said shaft having aligned central bores; a conductor extending through said central bores from said basket to a region outside said central bores; and a lock means for holding said shaft and said basket in a selective position relative to said handpiece and said tube.
Claim 2
Dependent Claim
146 words
A flexible catheter, comprising: a plurality of wires having first end portions forming a basket which expands in a forward position and contracts in a rearward position; an elongate flexible tube having a plurality of elongate peripherally spaced holes through which second ends of said respective wires pass; a handpiece having an end portion supporting said tube and having an elongate cavity; a shaft disposed in said cavity and having an end portion displaceable relative to said handpiece and said tube; connecting means fixedly connecting an end portion of said shaft to second end portions of said wires; said tube and said shaft having aligned central bores; a conductor extending through said central bores from said basket to a region outside said central bores; and a lock means for holding said shaft and said basket in a selective position relative to said handpiece and said tube.
Claim 3
Dependent Claim
35 words
A catheter as claimed in claim 1, wherein said handpiece has a fitting opening into said cavity for depositing or removing a liquid in said cavity, said wire holes and a region around said basket.
Claim 4
Dependent Claim
38 words
A catheter as claimed in claim 1, wherein said lock means includes an arcuate threaded portion mounted on said shaft and a cooperating arcuate threaded portion mounted on the handpiece, said threaded portions being disposed in said cavity.
Claim 5
Dependent Claim
18 words
A catheter as claimed in claim 1, wherein said tube and said shaft are made of plastic material.
Claim 6
Dependent Claim
60 words
A catheter as claimed in claim 1, wherein said connecting means include: a fixture plate having a plurality of pairs of holes respectively receiving said second end portions of said wires; each of said wire second end portions having a hook portion received in a respective pair of holes; said fixture plate being fixedly connected to said shaft end portion.
Claim 7
Dependent Claim
45 words
A catheter as claimed in claim 1, including first seal means disposed between said shaft and said handpiece for sealing said cavity; and second seal means disposed between said conductor and a knob on said shaft for sealing said shaft central bore and said cavity.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-04-03 | 1998-10-03 | 1999-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-04-03 | 2002-10-03 | 2003-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-04-03 | 2006-10-03 | 2007-04-04 | $7700.00 | Window Closed / Lapsed |