Delivery platforms, devices, and methods for tricuspid valve repair
Devices and methods for treating tricuspid regurgitation (TR) are provided. A clasp or clamp is used to anchor a TR-treatment device to an existing lead of a pacemaker or an implantable cardioverter defibrillator (ICD) that passes through the tricuspid valve. The TR-treatment device can be a balloon occluder that is adjustable by filling or withdrawing filler material from the occluder through a proximal port implanted in the skin of the patient.
1. A cardiac valve occluder comprising:
an anchoring wire configured to provide a distal bend disposed between opposing end portions of the anchoring wire, the distal bend being configured to be disposed around a lead of a cardiac pacing device or a defibrillation device;
a locking member moveable over or along one or both of the opposing end portions of the anchoring wire and having a cinched configuration, the locking member being secured to the anchoring wire and being prevented from moving away from the distal bend when the locking member is in the cinched configuration; and
an occluder coupled to the locking member or to the anchoring wire, the occluder being arranged to inhibit a fluid flow in a direction away from the occluder and toward the locking member when the occluder is disposed in a valve annulus;
wherein the locking member is configured to retain the distal bend around the lead of the cardiac pacing device or the defibrillation device when in the cinched configuration such that the occluder is disposed within a heart valve.
2. The cardiac valve occluder of claim 1 , further comprising a distal tether disposed between and defining a distance between the locking member and the occluder.
3. The cardiac valve occluder of claim 2 , wherein the position of the occluder relative to the lead can be adjusted by selecting a location to apply the cinched configuration such that the occluder can be positioned in the heart valve.
4. The cardiac valve occluder of claim 1 , further comprising a proximal tether that extends from the occluder in a direction that is away from the locking member.
5. The cardiac valve occluder of claim 4 , wherein the proximal tether is a hollow conduit, a proximal end of the hollow conduit comprising a port that is fluidically connected to an internal space of the occluder.
6. The cardiac valve occluder of claim 1 , wherein the occluder comprises a surface that is moveable between a first configuration and a second configuration, the surface being adapted such that when the surface is in the first configuration, the surface inhibits the fluid flow in the direction toward the occluder and away from the locking member to a greater extent than when the surface is in the second configuration.
7. The cardiac valve occluder of claim 1 , wherein the occluder has a proximal portion and a distal portion, the distal portion being disposed between the locking member and the proximal portion, an outer dimension of the proximal portion being greater than an outer dimension of the distal portion.
8. The cardiac valve occluder of claim 1 , wherein a transverse cross-section of the occluder is pear shaped.
9. The cardiac valve occluder of claim 1 , wherein an internal space of the occluder is configured to be filled with a fluid.
10. The cardiac valve occluder of claim 1 , wherein the occluder comprises a one-way valve.
11. A cardiac system comprising:
a cardiac pacing device comprising an electrical lead configured to be disposed across a heart valve and thereafter secured to cardiac tissue;
a cardiac valve backflow control device, comprising:
an anchoring wire configured to provide a distal bend disposed between opposing end portions of the anchoring wire, the distal bend being configured to be disposed around the lead when the lead is secured to cardiac tissue;
a locking member moveable over or along one or both of the opposing end portions of the anchoring wire and having a locked configuration, the locking member being secured to the anchoring wire and being prevented from moving away from the distal bend when the locking member is in the locked configuration, such that the distal bend is immobilized to the lead in the locked configuration; and
an occluder coupled to the locking member or to the anchoring wire, the occluder being arranged to inhibit a fluid flow in a direction away from the occluder and toward the locking member when the occluder is disposed in a valve annulus;
whereby the occluder of the cardiac backflow control device can be maintained in position within a valve annulus by cinching the distal bend about the lead and without direct connection to the cardiac tissue.
12. A cardiac system, comprising:
a defibrillation device comprising an electrical lead configured to be disposed across a heart valve and thereafter secured to cardiac tissue;
a cardiac valve backflow control device, comprising:
an anchoring wire configured to provide a distal bend disposed between opposing end portions of the anchoring wire, the distal bend being configured to be disposed around the lead when the lead is secured to cardiac tissue;
a locking member moveable over or along one or both of the opposing end portions of the anchoring wire and having a locked configuration, the locking member being secured to the anchoring wire and being prevented from moving away from the distal bend when the locking member is in the locked configuration, such that the distal bend is immobilized to the lead in the locked configuration; and
an occluder coupled to the locking member or to the anchoring wire, the occluder being arranged to inhibit a fluid flow in a direction away from the occluder and toward the locking member when the occluder is disposed in a valve annulus;
whereby the occluder of the cardiac backflow control device can be maintained in position within a valve annulus by cinching the distal bend about the lead and without direct connection to the cardiac tissue.