STENT FOR THE POSITIONING AND ANCHORING OF A VALVULAR PROSTHESIS IN AN IMPLANTATION SITE IN THE HEART OF A PATIENT
First Claim
1. An expandable stent (10) for implantation in a patient comprising a plurality of positioning arches (15a, 15b, 15c) configured to be positioned within a plurality of pockets (T) of the patient'"'"'s native heart valve and positioned on a first side of a plurality of native heart valve leaflets, and a plurality of retaining arches (16a, 16b, 16c) configured to be positioned on a second side of the plurality of native heart valve leaflets opposite the first side.
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Accused Products
Abstract
The present invention relates to a stent for the positioning and anchoring of a valvular prosthesis in an implantation site in the heart of a patient. Specifically, the present invention relates to an expandable stent for an endoprosthesis used in the treatment of a narrowing of a cardiac valve and/or a cardiac valve insufficiency. So as to ensure that no longitudinal displacement of a valvular prosthesis fastened to a stent will occur relative the stent in the implanted state of the stent, even given the peristaltic motion of the heart, the stent according to the invention comprises at least one fastening portion via which the valvular prosthesis is connectable to the stent. The stent further comprises positioning arches and retaining arches, whereby at least one positioning arch is connected to at least one retaining arch.
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Citations
20 Claims
- 1. An expandable stent (10) for implantation in a patient comprising a plurality of positioning arches (15a, 15b, 15c) configured to be positioned within a plurality of pockets (T) of the patient'"'"'s native heart valve and positioned on a first side of a plurality of native heart valve leaflets, and a plurality of retaining arches (16a, 16b, 16c) configured to be positioned on a second side of the plurality of native heart valve leaflets opposite the first side.
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19. The expandable stent (10) according to claim 47,
wherein at least one flared or tapered section is provided only near the locations of the positioning arches (15a, 15b, 15c), wherein no flared or tapered section is provided near the regions in between the two arms (15a′ - , 15a″
, 15b′
, 15b″
, 15c′
, 15c″
) of two neighboring positioning arches (15a, 15b, 15c).
- , 15a″
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20. A method of treating a native valve with a valve prosthesis (100) supported on a stent (10) including a plurality of first arches each having an open end joined to an open end of an adjacent first arch, a plurality of second arches each having an open end joined to an open end of an adjacent second arch, and at least one third arch having an open end and being interspaced between and joined to two adjacent first arches, the method comprising the steps of:
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positioning the plurality of first arches within pockets of the native heart valve; positioning at least a portion of the native heart valve between the plurality of first arches and the plurality of second arches; and applying a radial force against a portion of a vascular wall with the at least one third arch.
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Specification