US4927426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catheter device
Assignee: Individual
•
Filing: 1989-01-03
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Granted: 1990-05-22
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Expires: 2009-01-03
Abstract
Abstract A catheter device for capturing and holding kidney stones and the like wherein the catheter is an elongated tube having a cuff portion disposed on one end thereof capable of being collapsed axially inwardly into the tube and a snare disposed and axially moveable within the catheter for capturing and holding a kidney stone and collapsing the cuff portion. The snare is a second elongated tube capable of receiving a laser fiber for disintegrating a kidney stone when captured and held by the snare.
Inventors
- 👤 Stephen P. Dretler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:00
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/18; A61B18/20; A61B18/22; A61B18/24; A61B18/245; A61B17/00; A61B17/22; A61B17/221; A61B2017/2212
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
197 words
A catheter device for capturing and holding kidney stones and the like within a body passage said device comprising in combination an elongated tube for insertion into a body passage said tube having distal and proximal ends wherein the length of said tube is such that said distal end is disposed within said body passage and said proximal end is disposed outside of said body passage; an axially inwardly collapsable cuff portion disposed adjacent the distal end of said tube, said cuff portion being an expanded portion of said tube wall and terminating in a free end; and snare means disposed within said tube and movable axially therein, said snare means comprising a second hollow elongated tube having a capturing head disposed at its distal end, said capturing head being disposed about the opening of said second hollow elongated tube wherein said capturing head with a kidney stone or the like held therein when moved outwardly of said body passage towards said expanded portion causes the free end of said cuff portion of said elongated tube to collapse axially inwardly into said expanded portion so as to envelope said capturing head and kidney stone or the like.
Claim 2
Dependent Claim
197 words
A catheter device for capturing and holding kidney stones and the like within a body passage said device comprising in combination an elongated tube for insertion into a body passage said tube having distal and proximal ends wherein the length of said tube is such that said distal end is disposed within said body passage and said proximal end is disposed outside of said body passage; an axially inwardly collapsable cuff portion disposed adjacent the distal end of said tube, said cuff portion being an expanded portion of said tube wall and terminating in a free end; and snare means disposed within said tube and movable axially therein, said snare means comprising a second hollow elongated tube having a capturing head disposed at its distal end, said capturing head being disposed about the opening of said second hollow elongated tube wherein said capturing head with a kidney stone or the like held therein when moved outwardly of said body passage towards said expanded portion causes the free end of said cuff portion of said elongated tube to collapse axially inwardly into said expanded portion so as to envelope said capturing head and kidney stone or the like.
Claim 3
Dependent Claim
18 words
The catheter device of claim 1 wherein said cuff portion has corrugations formed in the outer surface thereof.
Claim 4
Dependent Claim
36 words
The catheter device of claim 2 wherein the wall of said elongated tube is provided with stiffening means which extends from said proximal end to a position which is about the midpoint of said cuff portion.
Claim 5
Dependent Claim
24 words
The catheter device of claim 3 wherein said stiffening means comprises at least one wire filament molded into the wall of said elongated tube.
Claim 6
Dependent Claim
30 words
The catheter device of claim 4 wherein said cuff portion means disposed about the circumference of said cuff portion to aid in the inward axial collapse of said cuff portion.
Claim 7
Dependent Claim
18 words
The catheter device of claim 1 further including kidney stone disintegrating means disposed in said second elongated tube.
Claim 8
Dependent Claim
19 words
The catheter device of claim 6 wherein said stone disintegrating means is an optical fiber for transmitting laser energy.
Claim 9
Dependent Claim
20 words
The catheter device of claim 7 wherein the outside surface of said cuff portion is coated with a laser-reflective coating.
Claim 10
Dependent Claim
15 words
The catheter device of claim 1 wherein said elongated tube is comprised of polyvinyl chloride.
References Cited (Backward Citations)
US2943626A
Cited
US4198960A
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US4299225A
Cited
US4692139A
Cited
US4611594A
Cited
US4625726A
Cited
US4790812A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-05-21 | 1993-11-20 | 1994-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-21 | 1997-11-20 | 1998-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-21 | 2001-11-20 | 2002-05-22 | $7700.00 | Window Closed / Lapsed |