DEVICE FOR THE IN SITU DELIVERY OF HEART VALVES
First Claim
1. A device for deploying a cardiac valve prosthesis, including a first expandable portion and a second expandable portion, at an implantation site, the device comprising:
- a first constraint member for radially constraining the first expandable portion;
a second constraint member for radially constraining the second expandable portion;
a rotary actuation member coupled to the first constraint for retracting the first constraint such that the first expandable portion is deployed; and
a slidable actuation member coupled to the second constraint member for retracting the second constraint such that the second expandable portion is deployed;
wherein the first and the second actuation members are independently adjustable, such that the first and second expandable portions may be independently deployed.
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Accused Products
Abstract
A device for deploying a cardiac valve prosthesis includes at least one constraint member for radially constraining radially expandable annular portions of the valve. The constraint member is actuatable to release the annular formations constrained thereby and permit radial expansion of these annular formations. The constraint member has associated a first, slow-acting actuating mechanism and a second, fast-acting mechanism, adapted to produce relatively slow and fast release of the annular formations constrained thereby. The device may include a first constraint member and second constraint member in the form of telescoping sleeves. The slow-acting actuating mechanism will thus act on the outer sleeve, while the fast-acting mechanism will act on the inner sleeve to produce, respectively, slow and fast release of the annular formations.
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Citations
16 Claims
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1. A device for deploying a cardiac valve prosthesis, including a first expandable portion and a second expandable portion, at an implantation site, the device comprising:
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a first constraint member for radially constraining the first expandable portion; a second constraint member for radially constraining the second expandable portion; a rotary actuation member coupled to the first constraint for retracting the first constraint such that the first expandable portion is deployed; and a slidable actuation member coupled to the second constraint member for retracting the second constraint such that the second expandable portion is deployed; wherein the first and the second actuation members are independently adjustable, such that the first and second expandable portions may be independently deployed.
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- 2. A device for deploying a cardiac valve prosthesis including radially expandable annular portions, the device including at least one constraint member for radially constraining the annular portions, the at least one constraint member actuatable to release the annular portions constrained thereby to permit radial expansion of the annular portions, wherein the at least one constraint member has associated a first, slow-acting actuating mechanism and a second, fast-acting mechanism, respectively, to produce relatively slow and fast release of the annular portions constrained thereby.
Specification