US20040024286A1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heart wall actuation device for the natural heart
Assignee: University of Cincinnati
•
Filing: 2003-07-14
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Granted: —
•
Expires: 2023-07-14
Abstract
Abstract An actuation system for assisting the operation of the natural heart comprises a framework for interfacing with a natural heart, through the wall of the heart, which includes an internal framework element configured to be positioned within the interior volume of a heart and an external framework element configured to be positioned proximate an exterior surface of the heart. The internal framework is flexibly suspended with respect to the external frame. An actuator system is coupled to the framework and configured to engage an exterior surface of the heart. The actuator system comprises an actuator band extending along a portion of a heart wall exterior surface. The actuator band is selectively movable between an actuated state and a relaxed state and is operable, when in the actuated state, to assume a predetermined shape and thereby indent a portion of the heart wall to effect a reduction in the volume of the heart. A drive apparatus is coupled to the actuator band and is operable for selectively moving the actuator band between the relaxed and actuated states to achieve the desired assistance of the natural heart.
Inventors
- 👤 David Melvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:17
CPC Classifications
A; A61; A61M; A61M60/00; A61M60/10; A61M60/122; A61M60/126; A61M60/148; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2478; A61F2/2481; A61M60/165; A61M60/191; A61M60/20; A61M60/289; A61M60/40; A61M60/465
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
132 words
1 . An actuation system for assisting the operation of the natural heart, the actuation system comprising: a framework for interfacing with a natural heart; an actuator system coupled to the framework and configured to engage an exterior surface of the heart, the actuator system comprising: an actuator band extending along a portion of a heart wall exterior surface, the actuator band selectively movable between an actuated state and a relaxed state and operable, when in the actuated state, to assume a predetermined shape and thereby indent a portion of the heart wall to effect a reduction in the volume of the heart; and a curvature limiting device coupled to the actuator band and operable for limiting the curvature that the actuator band imposes on the indented portion of the heart wall.
Claim 2
Dependent Claim
132 words
1 . An actuation system for assisting the operation of the natural heart, the actuation system comprising: a framework for interfacing with a natural heart; an actuator system coupled to the framework and configured to engage an exterior surface of the heart, the actuator system comprising: an actuator band extending along a portion of a heart wall exterior surface, the actuator band selectively movable between an actuated state and a relaxed state and operable, when in the actuated state, to assume a predetermined shape and thereby indent a portion of the heart wall to effect a reduction in the volume of the heart; and a curvature limiting device coupled to the actuator band and operable for limiting the curvature that the actuator band imposes on the indented portion of the heart wall.
Claim 3
Dependent Claim
42 words
2 . The activation system of claim 1 , further comprising a drive apparatus coupled to the actuator band and operable for selectively moving the actuator band between the relaxed and actuated states to achieve the desired assistance of the natural heart.
Claim 4
Dependent Claim
44 words
3 . The actuation system of claim 1 , the actuator band configured to extend along a portion of the left ventricle heart wall, the band, in the actuated state indenting the wall and effecting a reduction of the volume of the left ventricle.
Claim 5
Dependent Claim
44 words
4 . The actuation system of claim 1 , wherein said actuator band includes a plurality of juxtaposed elements, the elements configured to be drawn together in the actuated state and to cooperate with each other, when drawn together, to assume the predetermined shape.
Claim 6
Dependent Claim
44 words
5 . The actuation system of claim 4 , wherein said elements are blocks coupled together by a cord, the cord operably coupled to be moved by the drive apparatus in the actuated state to draw the blocks together and form said predetermined shape.
Claim 7
Dependent Claim
28 words
6 . The actuation system of claim 5 , wherein said blocks have adjacent cooperating surfaces which are at least partially coextensive when the blocks are drawn together.
Claim 8
Dependent Claim
24 words
7 . The actuation system of claim 1 , wherein at least end of the actuator band is fixed to the external framework element.
Claim 9
Dependent Claim
22 words
8 . The actuation system of claim 1 wherein said actuator band is coupled at an end to said external framework element.
Claim 10
Dependent Claim
18 words
9 . The actuation system of claim 5 further comprising a plurality of cords coupling the blocks together.
Claim 11
Dependent Claim
29 words
10 . The actuation system of claim 5 wherein the cord extends through one of an aperture and a channel formed in the blocks to coupled the blocks together.
Claim 12
Dependent Claim
28 words
11 . The actuation system of claim 1 wherein the curvature limiting device includes a curvature limiting band coupled between the actuator band and the external framework element.
Claim 13
Dependent Claim
21 words
12 . The actuation system of claim 1 further comprising a plurality of curvature limiting devices coupled to the actuator band.
Claim 14
Dependent Claim
46 words
13 . The actuation system of claim 1 wherein said curvature limiting device is operable for limiting the curvature of the actuator band to a certain percentage of the natural curve of the portion of a heart wall exterior surface along which the actuator band extends.
Claim 15
Dependent Claim
23 words
14 . The actuation system of claim 1 further comprising a plurality of actuator bands for indenting a portion of the heart wall
Claim 16
Dependent Claim
27 words
15 . The actuation system of claim 1 wherein said actuator band comprises a plurality of articulated elements which move with respect to each other at joints.
Claim 17
Dependent Claim
35 words
16 . The actuation system of claim 1 wherein the actuator band, in the relaxed state, is operable to generally assume the natural curve of the heart wall surface along which the actuator band extends.
Claim 18
Dependent Claim
127 words
17 . An actuation system for assisting the operation of the natural heart, the actuation system comprising: a framework for interfacing with a natural heart; an actuator system coupled to the framework and configured to engage an exterior surface of the heart, the actuator system comprising: an actuator band extending along a portion of a heart wall exterior surface, the actuator band selectively movable between an actuated state and a relaxed state and operable, when in the actuated state, to assume a predetermined shape and thereby indent a portion of the heart wall to effect a reduction in the volume of the heart; and a paving element coupled between the actuator band and the heart wall for providing smooth functioning of the band with the heart wall.
Claim 19
Dependent Claim
127 words
17 . An actuation system for assisting the operation of the natural heart, the actuation system comprising: a framework for interfacing with a natural heart; an actuator system coupled to the framework and configured to engage an exterior surface of the heart, the actuator system comprising: an actuator band extending along a portion of a heart wall exterior surface, the actuator band selectively movable between an actuated state and a relaxed state and operable, when in the actuated state, to assume a predetermined shape and thereby indent a portion of the heart wall to effect a reduction in the volume of the heart; and a paving element coupled between the actuator band and the heart wall for providing smooth functioning of the band with the heart wall.
Claim 20
Dependent Claim
14 words
18 . The actuation system of claim 1 wherein the paving element is flexible.
Claim 21
Dependent Claim
12 words
19 . The actuation system wherein the paving element includes a mesh.
Claim 22
Dependent Claim
12 words
19 . The actuation system wherein the paving element includes a mesh.
Claim 23
Dependent Claim
12 words
20 . The actuation system wherein the paving element includes a fabric.
Claim 24
Dependent Claim
12 words
20 . The actuation system wherein the paving element includes a fabric.
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