US5192290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Embolectomy catheter
Assignee: Applied Medical Resources Corp
•
Filing: 1990-08-29
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Granted: 1993-03-09
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Expires: 2010-08-29
Abstract
Abstract An improved embolectomy catheter, includes a catheter body, an elastomeric foam catheter tip attached at one end of the catheter body, and actuator means for elastically deforming the catheter tip. The catheter tip deforms longitudinally and radially in response to activation of the actuation means. The catheter tip may be formed of any type of sterile elastomeric foam, which may be easily compressed and restored to its original shape upon decompression.
Inventors
- 👤 Said Hilal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:22
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/28; A61B17/29; A61B17/2909; A61B17/22; A61B17/22031; A61B17/22032; A61M; A61M25/00; A61M25/0067; A61M25/0068; A61M25/0074; A61M25/0082; A61B2017/22034; A61B2017/2912; A61B2017/2918; A61M25/0069
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
76 words
A catheter comprising: a flexible tubular nondistensible catheter body having first and second ends; an elastomeric nonwoven foam catheter tip attached to and extending outwardly from the catheter body at the first end; a retractable flexible stylet extending through said catheter body and being attached to said catheter tip; wherein operation of said stylet at said second end of the catheter body deforms said elastomeric foam catheter tip at said first end of the catheter body.
Claim 2
Dependent Claim
76 words
A catheter comprising: a flexible tubular nondistensible catheter body having first and second ends; an elastomeric nonwoven foam catheter tip attached to and extending outwardly from the catheter body at the first end; a retractable flexible stylet extending through said catheter body and being attached to said catheter tip; wherein operation of said stylet at said second end of the catheter body deforms said elastomeric foam catheter tip at said first end of the catheter body.
Claim 3
Dependent Claim
40 words
The catheter recited in claim 1 further comprising: first means for attaching the foam tip to the catheter body; second means for attaching the foam tip to the stylet; and the second means being disposed distally of the first means.
Claim 4
Dependent Claim
28 words
The catheter recited in claim 2, wherein: the first means is disposed exteriorly of the catheter body; and the second means is disposed interiorly of the foam tip.
Claim 5
Dependent Claim
18 words
The catheter recited in claim 2 wherein the catheter tip encloses the first end of the catheter body.
Claim 6
Dependent Claim
37 words
The catheter recited in claim 1 wherein the stylet is disposed interiorly of the catheter body and is retractable relative to the catheter body to enlarge the catheter tip at the first end of the catheter body.
Claim 7
Dependent Claim
52 words
The catheter recited in claim 1 wherein the foam tip has a low profile state and a high profile state and the catheter further comprises: spring means surrounding the stylet distally of the catheter body for maintaining the foam tip in one of the low profile state and the high profile stage.
Claim 8
Dependent Claim
21 words
The catheter recited in claim 1 wherein the foam tip has compression characteristics which vary generally linearly radially of the stylet.
Claim 9
Independent Claim
138 words
A method for removing an embolus, thrombus, or other clot from a blood vessel, comprising the steps of: creating an opening into the blood vessel; inserting through the opening and into the blood vessel a catheter including a tubular catheter body, a catheter tip formed of a nonwoven foam material, and an actuator for deforming the catheter tip between an expanded state and a compressed state; advancing the catheter tip beyond the clot in the vessel; manipulating the actuator to place the catheter tip in the expanded state; moving the catheter tip toward the opening, the foam material in the tip having a tendency to compress upon engaging the clot; and during the moving step, resisting compression of the catheter tip with elastomeric forces created by the foam material, to avoid high pressures damaging to the blood vessel.
Claim 10
Independent Claim
138 words
A method for removing an embolus, thrombus, or other clot from a blood vessel, comprising the steps of: creating an opening into the blood vessel; inserting through the opening and into the blood vessel a catheter including a tubular catheter body, a catheter tip formed of a nonwoven foam material, and an actuator for deforming the catheter tip between an expanded state and a compressed state; advancing the catheter tip beyond the clot in the vessel; manipulating the actuator to place the catheter tip in the expanded state; moving the catheter tip toward the opening, the foam material in the tip having a tendency to compress upon engaging the clot; and during the moving step, resisting compression of the catheter tip with elastomeric forces created by the foam material, to avoid high pressures damaging to the blood vessel.
Claim 11
Dependent Claim
27 words
The method recited in claim 8 wherein during the resisting step the elastomeric forces produce pressures which are less than a magnitude damaging to the blood vessel.
Claim 12
Dependent Claim
28 words
The method recited in claim 9 wherein during the resisting step the elastomeric forces produce pressures which are generally free of pressure spikes damaging to the blood vessel.
Claim 13
Dependent Claim
24 words
The method recited in claim 9 wherein during the resisting step the elastomeric forces produce pressures which are generally linear throughout the moving step.
Claim 14
Dependent Claim
34 words
The method recited in claim 8 wherein during the inserting step the catheter is further characterized by an outer surface of the catheter body and the foam material is attached to the outer surface.
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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) | 1996-03-08 | 1996-09-07 | 1997-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-03-08 | 2000-09-07 | 2001-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-03-08 | 2004-09-07 | 2005-03-09 | $7700.00 | Window Closed / Lapsed |