Partially-adjustable annuloplasty structure
First Claim
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1. Apparatus, comprising:
- an annuloplasty structure configured for implantation along an annulus of an atrioventricular valve of a heart of a subject, the structure comprising;
a sleeve defining a lumen therethrough;
an elongate coiled element disposed entirely within the lumen of the sleeve, the coiled element comprising;
at least one first coiled portion having coils that are flexible and longitudinally compressible; and
at least one second coiled portion in series with the first coiled portion, the second coiled portion having coils that are flexible and less longitudinally compressible than the coils of the first coiled portion;
a contracting member disposed within a lumen of the coiled element, the contracting member being slidable through the first and second coiled portions of the coiled element in order to adjust a perimeter of the annuloplasty structure; and
a contracting mechanism coupled to a portion of the contracting member, the contracting mechanism being;
attached to the coiled element at the second coiled portion, andconfigured to adjust the perimeter of the annuloplasty structure by applying a force to the contracting member,wherein a length of the second coiled portion is 10-50 mm.
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Abstract
Apparatus and methods are described including an annuloplasty structure configured for implantation along an annulus of an atrioventricular valve of a heart of a subject. The structure includes a coiled element comprising at least one first portion thereof which is flexible and longitudinally compressible, and at least one second portion thereof in series with the first portion, the second portion being flexible and less longitudinally compressible than the first portion. Other applications are also described.
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Citations
21 Claims
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1. Apparatus, comprising:
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an annuloplasty structure configured for implantation along an annulus of an atrioventricular valve of a heart of a subject, the structure comprising; a sleeve defining a lumen therethrough; an elongate coiled element disposed entirely within the lumen of the sleeve, the coiled element comprising; at least one first coiled portion having coils that are flexible and longitudinally compressible; and at least one second coiled portion in series with the first coiled portion, the second coiled portion having coils that are flexible and less longitudinally compressible than the coils of the first coiled portion; a contracting member disposed within a lumen of the coiled element, the contracting member being slidable through the first and second coiled portions of the coiled element in order to adjust a perimeter of the annuloplasty structure; and a contracting mechanism coupled to a portion of the contracting member, the contracting mechanism being; attached to the coiled element at the second coiled portion, and configured to adjust the perimeter of the annuloplasty structure by applying a force to the contracting member, wherein a length of the second coiled portion is 10-50 mm. - View Dependent Claims (2, 3)
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4. A method, comprising:
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positioning an annuloplasty structure along an annulus of an atrioventricular valve of a subject, the annuloplasty structure including; a sleeve defining a lumen therethrough, and an elongate coiled element disposed entirely within the lumen of the sleeve, the coiled element including; at least one first coiled portion having coils that are flexible and longitudinally compressible; and at least one second coiled portion in series with the first coiled portion, the second coiled portion having coils that are flexible and less longitudinally compressible than the coils of the first coiled portion and having a length of 10-50 mm; a contracting member disposed within a lumen of the coiled element, the contracting member being slidable through the first and second coiled portions of the coiled element in order to adjust a perimeter of the annuloplasty structure; and a contracting mechanism coupled to a portion of the contracting member, the contracting mechanism being; attached to the coiled element at the second coiled portion, and configured to adjust the perimeter of the annuloplasty structure by applying a force to the contracting member; fastening the annuloplasty structure to the annulus; and adjusting the perimeter of the annuloplasty structure by applying the force to the contracting member and compressing the first coiled portion of the coiled element.
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5. Apparatus, comprising:
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an annuloplasty structure configured for implantation along an annulus of an atrioventricular valve of a heart of a subject and shaped so as to define a substantially “
D”
-shaped configuration having a straight portion and a curved portion, the structure comprising;a sleeve defining a lumen therethrough; an elongate coiled element disposed entirely within the lumen of the sleeve, the coiled element comprising; at least one first coiled portion having coils that are flexible and longitudinally compressible, the curved portion of the annuloplasty structure comprising the first coiled portion; and at least one second coiled portion in series with the first coiled portion, the second coiled portion having coils that are flexible and less longitudinally compressible than the coils of the first coiled portion, the straight portion of the annuloplasty structure comprising the second coiled portion; a contracting member disposed within a lumen of the coiled element, the contracting member being slidable through the first and second coiled portions of the coiled element in order to adjust a perimeter of the annuloplasty structure; and a contracting mechanism coupled to a portion of the contracting member, the contracting mechanism being; attached to the coiled element at the straight portion of the annuloplasty structure, and configured to adjust the perimeter of the annuloplasty structure by applying a force to the contracting member. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method, comprising:
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positioning along an annulus of an atrioventricular valve of a subject an annuloplasty structure shaped so as to define a substantially “
D”
-shaped configuration having a straight portion and a curved portion, the annuloplasty structure including;a sleeve defining a lumen therethrough, and an elongate coiled element disposed entirely within the lumen of the sleeve, the coiled element including; at least one first coiled portion having coils that are flexible and longitudinally compressible, the curved portion of the annuloplasty structure comprising the first coiled portion; and at least one second coiled portion in series with the first coiled portion, the second coiled portion having coils that are flexible and less longitudinally compressible than the coils of the first coiled portion, the straight portion of the annuloplasty structure comprising the second coiled portion; a contracting member disposed within a lumen of the coiled element, the contracting member being slidable through the first and second coiled portions of the coiled element in order to adjust a perimeter of the annuloplasty structure; and a contracting mechanism coupled to a portion of the contracting member, the contracting mechanism being; attached to the coiled element at the straight portion of the annuloplasty structure, and configured to adjust the perimeter of the annuloplasty structure by applying a force to the contracting member; fastening the annuloplasty structure to the annulus; and adjusting the perimeter of the annuloplasty structure by applying the force to the contracting member and compressing the first coiled portion of the coiled element. - View Dependent Claims (19, 20, 21)
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Specification