Patent US6425916B1 successfully refreshed from Google Patents.
US6425916B1
Expired / Lapsed
US
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Methods and devices for implanting cardiac valves
Assignee: Heartport Inc
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Filing: 1999-02-10
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Granted: 2002-07-30
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Expires: 2019-02-10
Abstract
Abstract The valve implantation system has a valve displacer for displacing and holding the native valve leaflets open in a first aspect of the invention. A replacement valve may be attached to the valve displacer before or after introduction and may be positioned independent of the valve displacer. In another aspect of the invention, the valve displacer and valve are in a collapsed condition during introduction and are expanded to deploy the valve displacer and valve. The valve is a tissue valve mounted to an expandable support structure. The support structure may have protrusions for engaging the valve displacer or barbs for anchoring the valve displacer to the heart or blood vessel. A temporary valve mechanism may be used to provide temporary valve functions during and after deployment of the valve displacer.
Inventors
- 👤 Michi E. Garrison
- 👤 Hanson S. Gifford, III
- 👤 Frederick G. St. Goar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:05
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2412; A61F2/2418; A61F2/2427; A61F2/243; A61F2/2433; A61F2/2436; A61F2220/00; A61F2220/0008; A61F2220/0016; A61F2250/00; A61F2250/0058; A61F2250/0059; A61F2250/006; Y; Y10; Y10S; Y10S623/00; Y10S623/902; Y10S623/904
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
128 words
A method of implanting a cardiac valve, comprising the steps of: introducing a replacement valve and a valve displacer into a patient, the replacement valve and valve displacer being mounted to a catheter and each being movable from a collapsed position to an expanded position, the replacement valve and valve displacer being introduced into the patient in the collapsed position; positioning the valve displacer between valve leaflets of a native cardiac valve; expanding the valve displacer to the expanded position after the positioning step, thereby displacing and holding the valve leaflets in an open position; and securing the replacement valve at a desired location in the patient wherein the replacement valve is secured to the valve displacer, said replacement valve having sharp elements which penetrate the native valve.
Claim 2
Independent Claim
128 words
A method of implanting a cardiac valve, comprising the steps of: introducing a replacement valve and a valve displacer into a patient, the replacement valve and valve displacer being mounted to a catheter and each being movable from a collapsed position to an expanded position, the replacement valve and valve displacer being introduced into the patient in the collapsed position; positioning the valve displacer between valve leaflets of a native cardiac valve; expanding the valve displacer to the expanded position after the positioning step, thereby displacing and holding the valve leaflets in an open position; and securing the replacement valve at a desired location in the patient wherein the replacement valve is secured to the valve displacer, said replacement valve having sharp elements which penetrate the native valve.
Claim 3
Dependent Claim
21 words
The method of claim 1 , wherein: the securing step is carried out with the valve interlocking with the valve displacer.
Claim 4
Dependent Claim
52 words
The method of claim 1 , wherein: the introducing step is carried out with the valve having a support structure and a valve portion, the support structure being expandable from a collapsed position to an expanded position, the introducing step being carried out with the support structure being in the collapsed position.
Claim 5
Dependent Claim
32 words
The method of claim 1 , further comprising the step of: enclosing the valve displacer in a flexible sheath during the introduction step; and uncovering the valve displacer before the expanding step.
Claim 6
Dependent Claim
24 words
The method of claim 1 , wherein: the introduction step is carried out with the catheter passing through a penetration in the aortic arch.
Claim 7
Dependent Claim
17 words
The method of claim 1 , wherein: the introducing step is carried out through the femoral artery.
Claim 8
Dependent Claim
21 words
The method of claim 1 , wherein: the introducing step is carried out with the valve being mounted on the catheter.
Claim 9
Dependent Claim
20 words
The method of claim 7 , wherein: the introducing step is carried out with the catheter having a valve mechanism.
Claim 10
Dependent Claim
31 words
The method of claim 8 , wherein: the introducing step is carried out the valve displacer having an end which flares outwardly when the valve displacer is in the expanded position.
Claim 11
Dependent Claim
41 words
The method of claim 7 , wherein: the introducing step is carried out with the catheter having a balloon, the balloon being coupled to a control mechanism for inflating and deflating the balloon to provide pumping assistance to the patient's heart.
Claim 12
Dependent Claim
29 words
The method of claim 1 , wherein: the introducing step is carried out with the catheter having an expandable member, the valve displacer being mounted to the expandable member.
Claim 13
Dependent Claim
29 words
The method of claim 1 , wherein: the introducing step is carried out with the catheter having an expandable member, the valve displacer being mounted to the expandable member.
Claim 14
Dependent Claim
30 words
The method of claim 1 , wherein: the introducing step is carried out with the valve displacer having a circumferential recess formed between a first end and a second end.
Claim 15
Dependent Claim
16 words
The method of claim 1 , wherein: the valve and valve displacement device are introduced together.
Claim 16
Dependent Claim
18 words
The method of claim 14 , further comprising the step of: inverting the valve after the introducing step.
Claim 17
Dependent Claim
37 words
The method of claim 1 , wherein: the valve introducing step is carried out with the valve having an expandable support structure, the expandable support structure having at least three posts extending from the expandable support structure.
References Cited (Backward Citations)
EP0850607A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2005-07-29 | 2006-01-28 | 2006-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-07-29 | 2010-01-28 | 2010-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-07-29 | 2014-01-28 | 2014-07-30 | $7700.00 | Window Closed / Lapsed |