Retrievable cardiac devices
AssigneeCardioKinetix, Inc.
InventorAlexander Khairkhahan
Life of this patent
Estimating the term…
Abstract
Removable cardiac implants, applicators for inserting, repositioning and/or removing them, and methods of using them are described. In particular, removable or repositionable ventricular partitioning devices are described. Systems including removable implants and applicators for inserting and/or removing them are also described.
Claims27
A method of deploying an implant comprising:
- advancing an implant into a patient's left ventricle chamber in a contracted configuration, wherein the implant comprises a plurality of struts formed of a shape memory material;
- expanding the implant into a deployed configuration at a first left ventricle location;
- changing the temperature of the implant to at least partially collapse the implant into the contracted configuration;
- retrieving the implant into a retrieval catheter;
- and
- withdrawing the implant from the first left ventricle location.
A device for partitioning a patient's ventricle into a main functional portion and a secondary non-functional portion, comprising:
- a membrane having an expanded configuration and a collapsed configuration;
- an expandable frame formed of a plurality of struts having a distal end secured to a hub, wherein the membrane is secured to the expandable frame;
- a stem extending distally from the hub;
- and
- a collapse sleeve configured to axially slide from the stem and to collapse the expandable frame and membrane into a collapsed configuration.
A removable or repositionable implant for partitioning a chamber of a patient's heart into a main functional portion and a secondary non-functional portion, comprising:
- a membrane;
- a plurality of struts secured to a hub at a first end, wherein the membrane is secured to the plurality of struts, and the plurality of struts and membrane have a collapsed delivery configuration and an expanded deployed configuration for deployment within a heart chamber, wherein the membrane forms a recess when in the expanded configuration;
- wherein the end of each of the plurality of struts includes a passive anchor configured to secure to the wall of the patient's heart;
- and
- a stem extending distally from the hub, wherein the stem comprises a shortenable region configured to be decreased in length and permit the passive anchors to disengage from the wall of the patient's heart.
A method of removing an implant that has been deployed at a first ventricle location, wherein the implant includes a plurality of struts each having a passive anchor at a first end and connected to a hub at a second end and a stem extending from the hub, the method comprising:
- shortening a shortenable region of the stem to disengage the passive anchors from the heart wall;
- at least partially collapsing the plurality of struts;
- and
- withdrawing the implant from the first left ventricle location.
A cardiac treatment device, the device comprising:
- a plurality of resilient struts secured to a hub at a first end, the plurality of resilient struts having a collapsed delivery configuration and an expanded deployed configuration for deployment within a heart chamber;
- wherein the end of each of the plurality of resilient struts includes a passive anchor configured to secure to the wall of the patient's heart, wherein the plurality of resilient struts are configured to augment the heart wall movement when the anchors are secured to the wall of the patient's heart;
- and
- a collapse mechanism configured to collapse the plurality of resilient struts from the expanded deployed configuration.
Dependencies are inferred from the claim text.