US6939359B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and methods for valve removal
Assignee: Medtronic 3F Therapeutics Inc
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Filing: 2003-02-26
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Granted: 2005-09-06
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Expires: 2023-02-26
Abstract
Abstract This invention discloses a medical catheter and methods for removing a defective valve from a patient endoluminally. The method may comprise inserting a medical catheter endoluminally to a site of the defective valve; deploying a coupling mechanism of said medical catheter to stabilize and immobilize a free edge of at least one valve leaflet; deploying a cutting mechanism of said medical catheter to cut a valve base of said defective valve; and removing said defective valve from the patient.
Inventors
- 👤 Hosheng Tu
- 👤 Rodolfo C. Quijano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:28
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/320016; A61B17/22; A61B17/22031; A61B17/221; A61B17/30; A61B18/00; A61B18/18; A61B18/20; A61B18/22; A61B18/24; A61B18/245; A61B17/00234; A61B2017/00238; A61B2017/00243; A61B2017/00345; A61B2017/00353; A61B2017/22097; A61B2017/2215; A61B2018/2238
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
151 words
A medical catheter for removing a defective valve from a patient comprising: an elongate catheter shaft having a catheter distal end, a catheter distal section, a catheter proximal end, and at least a lumen between said catheter distal end and said catheter proximal end; a deployable inner catheter located within one of said at least a lumen; a coupling mechanism located at the catheter distal section configured to grip and immobilize a free edge of at least one valve leaflet of the defective valve; and an expandable and retractable cutting mechanism mounted at a distal end of the deployable inner catheter, wherein the cutting mechanism expands in diameter when the cutting member is positioned outside the catheter and retracts in diameter when positioned inside the catheter, and the cutting member is configured to cut and separate a valve base of said defective valve from a valve root of said defective valve.
Claim 2
Dependent Claim
151 words
A medical catheter for removing a defective valve from a patient comprising: an elongate catheter shaft having a catheter distal end, a catheter distal section, a catheter proximal end, and at least a lumen between said catheter distal end and said catheter proximal end; a deployable inner catheter located within one of said at least a lumen; a coupling mechanism located at the catheter distal section configured to grip and immobilize a free edge of at least one valve leaflet of the defective valve; and an expandable and retractable cutting mechanism mounted at a distal end of the deployable inner catheter, wherein the cutting mechanism expands in diameter when the cutting member is positioned outside the catheter and retracts in diameter when positioned inside the catheter, and the cutting member is configured to cut and separate a valve base of said defective valve from a valve root of said defective valve.
Claim 3
Dependent Claim
33 words
The medical catheter according to claim 1 , wherein the coupling mechanism comprises a stapling element configured to couple a free edge of said at least one valve leaflet onto said stapling element.
Claim 4
Dependent Claim
33 words
The medical catheter according to claim 1 , wherein the coupling mechanism comprises a gripping element configured to couple a free edge of said at least one valve leaflet onto said gripping element.
Claim 5
Dependent Claim
35 words
The medical catheter according to claim 1 , wherein the coupling mechanism comprises a gluing element configured to glue and bond a free edge of said at least one valve leaflet onto said gluing element.
Claim 6
Dependent Claim
39 words
The medical catheter according to claim 1 , wherein the cutting mechanism comprises a sharp-edge element, and wherein a radiofrequency source is coupled to said sharp-edge element adapted for enhancing separation of the valve base of said defective valve.
Claim 7
Dependent Claim
42 words
The medical catheter according to claim 1 , wherein the cutting mechanism comprises a fiber optic laser element, and wherein a laser energy source is coupled to said fiber optic laser element adapted for separating the valve base of said defective valve.
References Cited (Backward Citations)
US6039748A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2008-09-05 | 2009-03-07 | 2009-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2012-09-05 | 2013-03-07 | 2013-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2016-09-05 | 2017-03-07 | 2017-09-06 | $7700.00 | Window Closed / Lapsed |