Patent US4534349A successfully refreshed from Google Patents.
Patent US5403324A successfully refreshed from Google Patents.
US5403324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible catheter with stone basket and ultrasonic conductor
Assignee: MICROSONIC ENGINEERING DEVICES COMPANY Inc
•
Filing: 1994-01-14
•
Granted: 1995-04-04
•
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 15:20
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)
US4611594A
Cited
DE3525458A1
Cited
US5176688A
Cited
US5197968A
Cited
US5190557A
Cited
US5312418A
Cited
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 |