Patent US5171233A successfully refreshed from Google Patents.
US5171233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Snare-type probe
Assignee: Ev3 Inc
•
Filing: 1990-04-25
•
Granted: 1992-12-15
•
Expires: 2010-04-25
Abstract
Abstract The present invention provides a snare for intravascular use having an elongate proximal member and a loop-shaped distal segment oriented at an angle to the adjacent portion of the proximal member. The snare may be formed of a superelastic shape memory alloy, which permits the distal segment to be collapsed for passage through a catheter and yet automatically open into its original, unrestrained configuration upon emerging from the distal tip of the catheter.
Inventors
- 👤 Kurt Amplatz
- 👤 Frank Kotula
- 👤 Rudy A. Mazzocchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:23
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/32056; A61B17/22; A61B17/221; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2002/30001; A61F2002/30003; A61F2002/3006; A61F2002/30092; A61F2210/00; A61F2210/0014; A61F2210/0019; A61M; A61M2205/00; A61M2205/02; A61M2205/0266
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
69 words
A snare for use in grasping and retrieving articles in medical procedures comprising an elongate proximal segment and a distal segment comprising a flexible wire formed of a superelastic material, said wire defining a loop means for grasping said articles adjacent a distal portion of said proximal segment; said loop means being oriented at an angle of greater than 45° from said adjacent distal portion of the proximal segment.
Claim 2
Dependent Claim
69 words
A snare for use in grasping and retrieving articles in medical procedures comprising an elongate proximal segment and a distal segment comprising a flexible wire formed of a superelastic material, said wire defining a loop means for grasping said articles adjacent a distal portion of said proximal segment; said loop means being oriented at an angle of greater than 45° from said adjacent distal portion of the proximal segment.
Claim 3
Dependent Claim
31 words
A snare as in claim 1 wherein said loop portion is oriented at an angle of between about 90° and about 135° from said adjacent distal portion of the proximal segment.
Claim 4
Dependent Claim
25 words
A snare as in claim 1 wherein said loop portion is oriented at an angle substantially perpendicular to said distal portion of the proximal segment.
Claim 5
Dependent Claim
24 words
A snare as in claim 1 wherein said distal segment includes distal tip means for facilitating entry of the distal segment into a catheter.
Claim 6
Dependent Claim
23 words
A snare as in claim 4, wherein the distal tip means and the eliptical loop portion are formed of a single, continuous wire.
Claim 7
Dependent Claim
19 words
A snare as in claim 5 wherein said wire is between about 0.005 and about 0.025 inches in diameter.
Claim 8
Dependent Claim
36 words
A snare as in claim 4 wherein said proximal segment is between about 60 cm and about 260 cm in length and said distal segment is between about 0.5 cm and about 5.0 cm in length.
Claim 9
Dependent Claim
27 words
A snare as in claim 1, wherein the loop portion is substantially circular in shape and has a diameter of about 0.5 cm to about 5.0 cm.
Claim 10
Dependent Claim
15 words
A snare as in claim 1, wherein the loop portion is substantially eliptical in shape.
Claim 11
Dependent Claim
75 words
A snare for use in grasping and retrieving articles in medical procedures, comprising an elongate proximal segment having substantially parallel lengths of wire tightly encased in a sheath, and a distal segment comprising a shape memory alloy wire, said wire defining a loop portion adjacent a distal portion of said proximal segment, and said loop portion being oriented at an angle of greater than about 45° from said adjacent distal portion of the proximal segment.
Claim 12
Dependent Claim
75 words
A snare for use in grasping and retrieving articles in medical procedures, comprising an elongate proximal segment having substantially parallel lengths of wire tightly encased in a sheath, and a distal segment comprising a shape memory alloy wire, said wire defining a loop portion adjacent a distal portion of said proximal segment, and said loop portion being oriented at an angle of greater than about 45° from said adjacent distal portion of the proximal segment.
Claim 13
Dependent Claim
28 words
A snare as in claim 10, wherein said sheath is formed of a plastic material having a coefficient of friction lower than that of the proximal segment wire.
Claim 14
Dependent Claim
12 words
A snare as in claim 11, wherein said plastic material is polytetrafluoroethylene.
Claim 15
Dependent Claim
15 words
A snare as in claim 10, wherein said shape memory alloy is a NiTi alloy.
Claim 16
Dependent Claim
24 words
A snare as in claim 10, wherein said wire segments of the proximal segment and the distal segment are formed of a continuous wire.
Claim 17
Dependent Claim
21 words
A snare as in claim 14, wherein said continuous wire comprises a cable which includes a plurality of interconnected wire strands.
Claim 18
Dependent Claim
74 words
A snare for use in grasping and retrieving articles and medical procedures, comprising an elongate proximal segment including at least two intertwined wire segments, and a distal segment comprising a flexible wire formed of a superelastic material, said wire defining a loop portion adjacent a distal portion of said proximal segment, and said loop portion being oriented at an angle of greater than about 45° from said adjacent distal portion of the proximal segment.
Claim 19
Dependent Claim
74 words
A snare for use in grasping and retrieving articles and medical procedures, comprising an elongate proximal segment including at least two intertwined wire segments, and a distal segment comprising a flexible wire formed of a superelastic material, said wire defining a loop portion adjacent a distal portion of said proximal segment, and said loop portion being oriented at an angle of greater than about 45° from said adjacent distal portion of the proximal segment.
References Cited (Backward Citations)
US1225771A
Cited
FR724776A
Cited
US3868956A
Cited
US3828790A
Cited
EP0027704A2
Cited
US4425908A
Cited
US4512338A
Cited
US4503569A
Cited
US4576162A
Cited
US4779616A
Cited
US4840176A
Cited
US4849032A
Cited
US4849032B1
Cited
US4950258A
Cited
US4991602A
Cited
US5057114A
Cited
US5064428A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-12-15 | 1996-06-15 | 1996-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-12-15 | 2000-06-15 | 2000-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-12-15 | 2004-06-15 | 2004-12-15 | $7700.00 | Window Closed / Lapsed |