Self-adjusting attachment structure for a cardiac support device
A cardiac support device including a jacket and elastic attachment structure for self-securing the jacket to a heart. The attachment structures can include undulating metal and polymer elements, a silicone band and elastomeric filaments on a base end of the jacket.
1 . A cardiac support device including:
a jacket including a base region, for constraining cardiac expansion; and
elastic attachment structure on the base region of the jacket, for self-securing the jacket to a heart.
2 . The cardiac support device of claim 1 wherein the attachment structure is attached to an exterior surface of the jacket.
3 . The cardiac support device of claim 1 wherein the attachment structure is attached to an interior surface of the jacket.
4 . The cardiac support device of claim 1 wherein:
the jacket base region includes a hem; and
the attachment structure is within the hem.
5 . The cardiac support device of claim 4 wherein the attachment structure is fixedly attached to the jacket within the hem.
6 . The cardiac support device of claim 1 wherein:
the jacket base region includes a channel; and
the attachment structure is free-floating within a channel.
7 . The cardiac support device of claim 6 wherein the jacket includes a hem forming the channel.
8 . The cardiac support device of claim 1 wherein:
the jacket has a first elasticity; and
the attachment structure has a second elasticity that is greater than the first elasticity.
9 . The cardiac support device of claim 1 wherein:
the jacket has a first elasticity; and
the attachment structure has a second elasticity that is less than the first elasticity.
10 . The cardiac support device of claim 1 wherein the attachment structure includes one or more undulating resilient elements.
11 . The cardiac support device of claim 10 wherein the one or more undulating resilient elements include one or more metal elements.
12 . The cardiac support device of claim 10 wherein the one or more undulating resilient elements includes one or more polymer elements.
13 . The cardiac support device of claim 10 wherein the one or more undulating resilient elements includes one or more bio-resorbable elements.
14 . The cardiac support device of claim 1 wherein the attachment structure includes a polymer structure.
15 . The cardiac support device of claim 1 wherein the attachment structure includes a metal structure.
16 . The cardiac support device of claim 1 wherein the attachment structure includes shape memory material structure.
17 . The cardiac support device of claim 1 wherein the attachment structure includes bio-resorbable material structure.
18 . The cardiac support device of claim 1 wherein the attachment structure extends circumferentially around the jacket.
19 . The cardiac support device of claim 18 wherein the attachment structure extends completely around the jacket.
20 . The cardiac support device of claim 18 wherein the attachment structure extends partially around the jacket.
21 . The cardiac support device of claim 18 wherein the attachment structure includes a plurality of segments at spaced-apart locations.
22 . The cardiac support device of claim 1 wherein the attachment structure includes one or more rings.
23 . The cardiac support device of claim 1 wherein the attachment structure includes a helical coil.
24 . The cardiac support device of claim 1 wherein the attachment structure includes a plurality of rings connected by links.
25 . The cardiac support device of claim 1 wherein the attachment structure includes a hoop having two free ends.
26 . The cardiac support device of claim 1 wherein the attachment structure includes a single elastomeric band.
27 . The cardiac support device of claim 26 wherein the elastomeric band includes apertures.
28 . The cardiac support device of claim 26 wherein the elastomeric band extends completely around the jacket.
29 . The cardiac support device of claim 26 wherein the elastomeric band extends partially around the jacket.
30 . The cardiac support device of claim 1 wherein the attachment structure includes a plurality of spaced-apart elastomeric bands.
31 . The cardiac support device of claim 1 wherein the attachment structure includes one or more filamentary elastomeric bands.
32 . The cardiac support device of claim 31 wherein the attachment structure further includes a plurality of pads.
33 . The cardiac support device of claim 32 wherein the pads are attached to the filamentary elastomeric bands.
34 . The cardiac support device of claim 32 wherein the pads include a textured surface.
35 . The cardiac support device of claim 1 wherein the attachment structure further includes a plurality of pads.
36 . The cardiac support device of claim 35 wherein the pads include a textured surface.
37 . The cardiac support device of claim 1 wherein the attachment structure includes one or more elastomeric filaments.
38 . The cardiac support device of claim 37 wherein the elastomeric filaments are woven into the jacket.
39 . The cardiac support device of claim 38 wherein the jacket includes knit material.
40 . The cardiac support device of claim 39 wherein the attachment structure elastomeric filaments are interwoven in the knit material of the jacket.
41 . The cardiac support device of claim 39 wherein the attachment structure elastomeric filaments are bundled with threads of the knit material of the jacket.
42 . The cardiac support device of claim 38 wherein the jacket includes non-woven material.
43 . The cardiac support device of claim 16 wherein the shape memory material structure includes nitinol.