US5713853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods for treating thrombosis
Assignee: Medtronic Vascular Inc
•
Filing: 1995-06-07
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Granted: 1998-02-03
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Expires: 2015-06-07
Abstract
Abstract A catheter for delivering drugs or other agents is disclosed particularly suited for delivering drugs proximate the walls of a vessel or lumen, such as an artery or vein. The catheter comprises a shaft with a distal portion comprising at least one and preferably a plurality of delivery members. When deployed, the delivery members flare from the catheter shaft at an acute or obtuse angle. At least a portion of the delivery members are within a restraining member such as a sleeve or thread, for example, to maintain the delivery member within the diameter of the shaft prior to deployment. Delivery lumens provide drugs to ports in the delivery members for delivery out of the catheter. The delivery members preferably bear against the wall of the vessel when deployed, to deliver the drug or other agent proximate the walls of the blood vessel, where blood flow is slow. In another embodiment the delivery members comprise a first tapered portion, a second longitudinal portion and a plurality of drug delivery ports.
Inventors
- 👤 David W. Clark
- 👤 Souise S. Clark
- 👤 Michael R. Forman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:30
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0067; A61M25/0068; A61M25/007; A61M29/00; A61M29/02; A61B; A61B17/00; A61B17/22; A61B2017/22082; A61M25/10; A61M2025/1043; A61M2025/105
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
62 words
A method of delivering drugs or other agents to a patient lumen comprising: advancing a catheter having compressed delivery members through and beyond a thrombus prior to a releasing step; releasing the delivery members so that the thrombus will be caught between the delivery members and a shaft of the catheter; delivering drugs or other agents through the catheter and delivery members.
Claim 2
Independent Claim
62 words
A method of delivering drugs or other agents to a patient lumen comprising: advancing a catheter having compressed delivery members through and beyond a thrombus prior to a releasing step; releasing the delivery members so that the thrombus will be caught between the delivery members and a shaft of the catheter; delivering drugs or other agents through the catheter and delivery members.
Claim 3
Dependent Claim
18 words
The method of claim 1, further comprising removing the thrombus using the delivery members, by retracting the catheter.
Claim 4
Independent Claim
79 words
A method of treating thrombosis comprising: advancing a first catheter with compressed delivery members proximal to the thrombus; advancing a second catheter with compressed delivery members through and beyond the thrombus; releasing the delivery members of the first catheter; releasing the delivery members of the second catheter so that the thrombus will be caught between the delivery members of the first catheter and the delivery members of the second catheter; delivering drugs or other agents through the second catheter.
Claim 5
Independent Claim
79 words
A method of treating thrombosis comprising: advancing a first catheter with compressed delivery members proximal to the thrombus; advancing a second catheter with compressed delivery members through and beyond the thrombus; releasing the delivery members of the first catheter; releasing the delivery members of the second catheter so that the thrombus will be caught between the delivery members of the first catheter and the delivery members of the second catheter; delivering drugs or other agents through the second catheter.
Claim 6
Dependent Claim
15 words
The method of claim 3, further comprising removing the thrombus by retracting the second catheter.
Claim 7
Dependent Claim
20 words
The method of claim 3, wherein the delivery steps comprise delivering a lytic agent through the first and second catheters.
Claim 8
Independent Claim
55 words
A method comprising: advancing a distal portion of a catheter having compressed, expandable solid members through a thrombus; releasing the members to extend rearwardly from a distal end of the catheter so that the thrombus will be caught between the members and a shaft of the catheter; and removing the thrombus by retracting the catheter.
Claim 9
Independent Claim
55 words
A method comprising: advancing a distal portion of a catheter having compressed, expandable solid members through a thrombus; releasing the members to extend rearwardly from a distal end of the catheter so that the thrombus will be caught between the members and a shaft of the catheter; and removing the thrombus by retracting the catheter.
Claim 10
Dependent Claim
18 words
The method of claim 6, wherein the thrombus is removed by retracting the catheter into a guide catheter.
References Cited (Backward Citations)
US3472230A
Cited
US3952747A
Cited
US4430083A
Cited
US4636195A
Cited
US4488877A
Cited
US4643184A
Cited
US4494531A
Cited
US4693243A
Cited
US4737141A
Cited
US4824436A
Cited
US4706671A
Cited
US4790812A
Cited
US4793348A
Cited
US4887996A
Cited
US4813925A
Cited
US4873978A
Cited
US4950258A
Cited
US4878893A
Cited
US4986814A
Cited
US4874360A
Cited
US4957470A
Cited
US4994069A
Cited
US5152777A
Cited
US5087244A
Cited
US5062829A
Cited
US5034001A
Cited
US4997435A
Cited
US5035706A
Cited
US5133733A
Cited
US5267960A
Cited
US5221261A
Cited
US5160342A
Cited
US5147379A
Cited
US5413586A
Cited
US5181911A
Cited
US5350398A
Cited
US5415630A
Cited
US5242452A
Cited
US5256146A
Cited
US5509900A
Cited
US5324304A
Cited
US5304120A
Cited
US5336178A
Cited
US5342348A
Cited
US5383887A
Cited
US5279565A
Cited
US5370657A
Cited
US5527280A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-02-02 | 2001-08-04 | 2002-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-02-02 | 2005-08-04 | 2006-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-02-02 | 2009-08-04 | 2010-02-03 | $7700.00 | Window Closed / Lapsed |