Coaptation enhancement implant, system, and method
First Claim
1. A coaptation assist implant for treating mal-coaptation of a heart valve of a heart in a patient, the heart valve having an annulus, first and second leaflets, and first and second commissures, the annulus defining a valve axis extending along a blood flow path, the first and second leaflets having a coaptation zone defining a curve extending across the blood flow path, the implant comprising:
- a coaptation assist body having an axis and first and second opposed major coaptation surfaces, each opposed major coaptation surface extending laterally between a first lateral edge and a second lateral edge of the coaptation assist body, the coaptation assist body introducible into the heart and supportable within the heart so that the axis of the coaptation assist body extends along the axis of the valve with the first and second lateral edges of the coaptation assist body extending along the curve of the coaptation zone of the heart valve;
the coaptation assist body deployable from a first configuration to a second configuration by removing the coaptation assist body from within a surrounding deployment catheter,wherein the coaptation assist body has an insertion volume within the deployment catheter and a deployed volume greater than the insertion volume, and wherein the coaptation assist body is volumetrically expandable within the heart so as to increase a thickness of the coaptation assist body between the first and second opposed major coaptation surfaces,wherein the coaptation assist body comprises a permeable material, and wherein the coaptation assist body is configured to volumetrically expand when released in the heart without the coaptation assist body being inflated using inflation fluid introduced from outside a vascular system of the patient.
2 Assignments
0 Petitions
Accused Products
Abstract
Implants, implant systems, and methods for treatment of mitral valve regurgitation and other valve diseases generally include a coaptation assist body which remains within the blood flow path as the leaflets of the valve move, the valve bodies often being relatively thin, elongate (along the blood flow path), and/or conformable structures which extend laterally from commissure to commissure, allowing the native leaflets to engage and seal against the large, opposed surfaces on either side of the valve body during the heart cycle phase when the ventricle contracts to empty that chamber of blood, and allows blood to pass around the valve body so that blood flows from the atrium to the ventricle during the filling phase of the heart cycle. Separate deployment of independent anchors near each of the commissures may facilitate positioning and support of an exemplary triangular valve body, with a third anchor being deployed in the ventricle. An outer surface of the valve body may accommodate tissue ingrowth or endothelialization, while a fluid-absorbing matrix can swell after introduction into the heart. The valve body shape may be selected after an anchor has been deployed, and catheter-based deployment systems may have a desirable low profile.
526 Citations
81 Claims
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1. A coaptation assist implant for treating mal-coaptation of a heart valve of a heart in a patient, the heart valve having an annulus, first and second leaflets, and first and second commissures, the annulus defining a valve axis extending along a blood flow path, the first and second leaflets having a coaptation zone defining a curve extending across the blood flow path, the implant comprising:
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a coaptation assist body having an axis and first and second opposed major coaptation surfaces, each opposed major coaptation surface extending laterally between a first lateral edge and a second lateral edge of the coaptation assist body, the coaptation assist body introducible into the heart and supportable within the heart so that the axis of the coaptation assist body extends along the axis of the valve with the first and second lateral edges of the coaptation assist body extending along the curve of the coaptation zone of the heart valve; the coaptation assist body deployable from a first configuration to a second configuration by removing the coaptation assist body from within a surrounding deployment catheter, wherein the coaptation assist body has an insertion volume within the deployment catheter and a deployed volume greater than the insertion volume, and wherein the coaptation assist body is volumetrically expandable within the heart so as to increase a thickness of the coaptation assist body between the first and second opposed major coaptation surfaces, wherein the coaptation assist body comprises a permeable material, and wherein the coaptation assist body is configured to volumetrically expand when released in the heart without the coaptation assist body being inflated using inflation fluid introduced from outside a vascular system of the patient. - View Dependent Claims (2, 3, 4)
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5. A coaptation assist system for treating mal-coaptation of a heart valve of a heart in a patient, the heart valve having an annulus, first and second leaflets, and first and second commissures, the annulus defining a valve axis extending along a blood flow path, the system comprising:
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a catheter system including a catheter body having a proximal end and a distal end, the distal end being steerable within the heart from the proximal end; a first anchor selectively deployable from within the heart with the catheter system at a first target location of the heart near the first commissure; and a coaptation assist body having an axis and first and second opposed major coaptation surfaces, each opposed major coaptation surface extending laterally between a first lateral edge and a second lateral edge of the coaptation assist body, the coaptation assist body introducible into the heart and coupleable in vivo with the first anchor after the first anchor is deployed in the heart so that the first lateral edge extends toward the first commissure; a second anchor selectively deployable from within the heart with the catheter system at a second target location of the heart near the second commissure, the second lateral edge of the coaptation assist body coupleable in vivo with the second anchor after the second anchor is deployed in the heart so that the coaptation assist body is supported by the second anchor with the second lateral edge extending toward the second commissure; and a first crimp that recieves a portion of the anchor and a second crimp that recieves a portion of the second anchor, the first crimp and the second crimp operably connected to an atrial support extending laterally from the coaptation assist body. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A coaptation assist implant for treating mal-coaptation of a heart valve of a heart in a patient, the heart valve having an annulus, first and second leaflets, and first and second commissures, the annulus defining a valve axis extending along a blood flow path, the first and second leaflets having a coaptation zone with a mal-coaptation geometry, the implant comprising:
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a coaptation assist body having an axis and first and second opposed major coaptation surfaces, each opposed major coaptation surface extending laterally between a first lateral edge and a second lateral edge of the coaptation assist body, the coaptation assist body supportable within the heart so that the axis of the implant extends along the axis of the valve with the first and second lateral edges of the coaptation assist body extend along the coaptation zone; a first anchor selectively deployable from within the heart with a catheter system at a first target location of the heart near the first commissure, and a second anchor selectively deployable from within the heart with the catheter system at a second target location of the heart near the second commissure; and a first crimp that receives a portion of the first anchor and a second crimp that recieves a portion of the second anchor, the first crimp and the second crimp operably connected to an atrial support extending laterally from the coaptation assist body, wherein the coaptation assist body of the implant is sufficiently conformable that engagement between the implant and the leaflets of the heart significantly conforms a shape of the coaptation assist body between the leaflets toward the mal-coaptation geometry of the leaflets. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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25. A coaptation assist device for treating mal-coaptation of a heart valve of a heart in a patient, the heart valve having an annulus, first and second leaflets, and first and second commissures, the annulus defining a valve axis, the first and second leaflets having a coaptation zone, the device comprising:
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a coaptation assist body having an axis and first and second opposed major coaptation surfaces, wherein the coaptation assist body defines a channel within the coaptation assist body, the coaptation assist body introducible into the heart and coupleable in vivo within the heart valve; a tether disposed within the channel and coupled to the coaptation assist body near a first end of the channel; and a curvature lock attached to the tether near a second end of the channel, the tether being lockable by the curvature lock to constrain the distance between the first and second ends of the channel so as to define a curvature of the coaptation assist body. - View Dependent Claims (26, 27, 28, 29)
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30. A coaptation assist system for treating mal-coaptation of a heart valve of a heart in a patient, the heart valve having an annulus, first and second leaflets, and first and second commissures, the annulus defining a valve axis, the system comprising:
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a catheter system including a catheter body having a proximal end and a distal end, the distal end being steerable within the heart from the proximal end; a coaptation assist body having an axis and first and second opposed major coaptation surfaces, each opposed major coaptation surface extending laterally between a first lateral edge and a second lateral edge of the coaptation assist body, the coaptation assist body introducible into the heart and coupleable in vivo within the heart valve, wherein the coaptation assist body defines a channel; a tether extending through the channel such that a curvature of the coaptation assist body is adjustable by varying the distance between the ends of the channel along the tether; and a curvature lock on the tether operable to constrain the distance between the ends of the channel so as to define a curvature of the coaptation assist body. - View Dependent Claims (31, 32, 33, 34)
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35. A coaptation assist system for treating mal-coaptation of a heart valve of a heart in a patient, the heart valve having an annulus, first and second leaflets, and first and second commissures, the annulus defining a valve axis extending along a blood flow path, the system comprising:
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a catheter system including a catheter body having a proximal end and a distal end, the distal end being steerable within the heart from the proximal end; a first anchor selectively deployable from within the heart with the catheter system at a first target location of the heart near the first commissure; and a coaptation assist body having an axis and first and second opposed major coaptation surfaces, each opposed major coaptation surface extending laterally between a first lateral edge and a second lateral edge of the coaptation assist body, the coaptation assist body introducible into the heart and coupleable in vivo with the first anchor after the first anchor is deployed in the heart so that the first lateral edge extends toward the first commissure, wherein the coaptation assist body further comprises a ventricular anchor, the ventricular anchor extending through a hub, the hub operably connected along the axis of the coaptation assist body. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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48. A coaptation assist system for treating mal-coaptation of a heart valve in a patient, the heart valve of a heart having an annulus, first and second leaflets, and first and second commissures the annulus defining a valve axis extending along a blood flow path, the system comprising:
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a catheter system including a catheter body having a proximal end and a distal end, the distal end being steerable within the heart from the proximal end; a first anchor selectively deployable from within the heart with the catheter system at a first target location of the heart near the first commissure; and a coaptation assist body having an axis and first and second opposed major coaptation surfaces, each opposed major coaptation surface extending laterally between a first lateral edge and a second lateral edge of the coaptation assist body, the coaptation assist body introducible into the heart and coupleable in vivo with the first anchor after the first anchor is deployed in the heart so that the first lateral edge extends toward the first commissure; and a first crimp that receives a portion of the first anchor, the first crimp operably connected to an atrial support extending laterally from the coaptation assist body. - View Dependent Claims (49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60)
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61. A coaptation assist implant for treating mal-coaptation of a heart valve of a heart in a patient, the heart valve having an annulus, first and second leaflets, and first and second commussures, the annulus defining a valve axis extending along a blood flow path, the first and second leaflets having a coaptation zone with a mal-coaptation geometry, the implant comprising:
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a coaptation assist body having an axis and first and second opposed major coaptation surfaces, each opposed major coaptation surface extending laterally between a first lateral edge and a second lateral edge of the coaptation assist body, the coaptation assist body supportable within the heart so that the axis of the implant extends along the axis of the valve with the first and second lateral edges of the coaptation assist body extend along the coaptation zone; wherein the coaptation assist body of the implant is sufficiently conformable that engagement between the implant and the leaflets of the heart significantly conforms a shape of the coaptation assist body between the leaflets toward the mal-coaptation geometry of the leaflets, wherein the coaptation assist body further comprises a ventricular anchor extending through a hub, the hub operably connected along the axis of the coaptation assist body. - View Dependent Claims (62, 63, 64, 65, 66, 67, 68, 69, 70)
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71. A coaptation assist implant for treating mal-coaptation of a heart valve of a heart in a patient, the heart valve having an annulus, first and second leaflets,and first and second commissures, the annulus defining a valve axis extending along a blood flow path, the first and second leaflets having a coaptation zone with a mal-coaptation geometry, the implant comprising:
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a coaptation assist body having an axis and first and second opposed major coaptation surfaces, each opposed major coaptation surface extending laterally between a first lateral edge and a second lateral edge of the coaptation assist body, the coaptation assist body supportable within the heart so that the axis of the implant extends along the axis of the valve with the first and second lateral edges of the coaptation assist body extend along the coaptation zone; a first anchor selectively deployable from within the heart with a catheter system at a first target location of the heart near the first commissure; and a first crimp that receives a portion of the first anchor, the first crimp operably connected to an atrial support extending laterally from the coaptation assist body, wherein the coaptation assist body of the implant is sufficiently conformable that engagement between the implant and the leaflets of the heart significantly conforms a shape of the coaptation assist body between the leaflets toward the mal-coaptation geometry of the leaflets. - View Dependent Claims (72, 73, 74, 75, 76, 77, 78, 79, 80, 81)
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Specification