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US 12,569,274 B2Granted
Method and apparatus for removing heart valve therapy
AssigneeAMX Technologies, LLC
InventorsPaul Sorajja, David M. Costello, Daniel P. Coyle, Karl Alexander Kabarowski, Alex Alden Peterson
Life of this patent
Estimating the term…
Abstract
A retrieval catheter and methods of use are described for removing a heart valve therapy such as a leaflet clip or artificial leaflet cord. The retrieval catheter can include a cutting element and a basket, piercing element, clamping mechanism, or similar grasping device. The method includes delivering a catheter to the region of the heart valve therapy and then manipulating the catheter and associated instruments to cut tissue as necessary and then remove the heart valve therapy and withdraw the catheter.
Claims32
A system for removing a heart valve therapy, comprising:
- an outer tubular sheath;
- a cutting element comprising a first cutting loop connected to a first inner control member and movable from a first compressed configuration within the outer tubular sheath to a second expanded configuration outside of the outer tubular sheath;
- wherein in the second expanded configuration of the cutting element, a plane aligned across an opening of the first cutting loop is angled between 45 degrees and 135 degrees relative to a longitudinal axis of the first inner control member and wherein the opening of the first cutting loop is positioned asymmetrically to a side of the longitudinal axis of the first inner control member so that the opening of the first cutting loop is rotatable to a plurality of asymmetric locations around the longitudinal axis of the first inner control member;
- and,
- a basket connected to a second inner control member and movable from a first compressed configuration within the outer tubular sheath to a second expanded configuration outside of the outer tubular sheath;
- wherein in the second expanded configuration of the basket, a plane aligned across an opening of the basket is angled between 45 degrees and 135 degrees relative to a longitudinal axis of the second inner control member, the opening of the basket is positioned asymmetrically to a side of the longitudinal axis of the second inner control member so that the opening of the of the basket is rotatable to a plurality of asymmetric locations around the longitudinal axis of the second inner control member, and the opening of the basket opens in a proximal direction.
3 more elements
A system for removing a heart valve therapy, comprising:
- an outer tubular sheath;
- a cutting element comprising a first cutting loop connected to a first inner control member and movable from a first compressed configuration within the outer tubular sheath to a second expanded configuration outside of the outer tubular sheath;
- wherein in the second expanded configuration of the cutting element, a plane aligned across an opening of the first cutting loop is angled between 45 degrees and 135 degrees relative to a longitudinal axis of the first inner control member and the opening of the first cutting loop is completely positioned to a side of the longitudinal axis of the first inner control member and is rotatable to a plurality of different positions around the longitudinal axis of the first inner control member;
- and, a basket connected to the first inner control member and movable from a first compressed configuration within the outer tubular sheath to a second expanded configuration outside of the outer tubular sheath;
- wherein in the second expanded configuration of the basket, a plane aligned across an opening of the basket is angled between 45 degrees and 135 degrees relative to the longitudinal axis of the first inner control member and the opening of the basket is positioned completely to a side of the longitudinal axis of the first second inner control member and opens in a proximal direction and is rotatable to a plurality of different positions around the longitudinal axis of the second inner control member.
2 more elements
A method of treating a heart valve, comprising:
- positioning a steerable guide catheter transeptally into a left atrium of a heart;
- positioning a first cutting loop connected to a first inner control member outside of an outer tubular sheath and into a left ventricle of a heart so that a plane of an opening of the first cutting loop is angled between 45 degrees and 135 degrees relative to an axis of the first inner control member and the first cutting loop is positioned to a side of the axis of the first inner control member;
- moving the first cutting loop so that a heart valve therapy connected to mitral valve leaflets passes through the first cutting loop;
- electrically activating the first cutting loop and cutting tissue to free the heart valve therapy;
- and,
- capturing the heart valve therapy within a receptacle and removing the heart valve therapy from the heart.
3 more elements
Dependencies are inferred from the claim text.