Techniques for fluoroscopic cardiac measurement
AssigneeEdwards Lifesciences Innovation (Israel) Ltd.
InventorTal Reich
Life of this patent
Estimating the term…
Abstract
A method is described, for use with a native valve of a heart of a subject, the valve being disposed between an atrium and a ventricle of the heart. A first radiopaque marker and a second radiopaque marker are percutaneously advanced to the heart. The first radiopaque marker is placed against a tissue site in the ventricle. The second radiopaque marker is placed against a component of the valve. A distance is fluoroscopically measured between the first radiopaque marker at the tissue site, and the second radiopaque marker at the component. At least one of the radiopaque markers is then withdrawn from the heart. Other embodiments are also described.
Claims23
A method, comprising:
- advancing a first radiopaque marker and a second radiopaque marker through vasculature to a heart, the first radiopaque marker being disposed on an elongate tool, and the heart having a native valve disposed between an atrium and a ventricle;
- placing the tool in the ventricle such that the first radiopaque marker is disposed against a tissue site in the ventricle;
- placing the second radiopaque marker against a component of the native valve;
- fluoroscopically measuring a distance between the first radiopaque marker at the tissue site, and the second radiopaque marker at the component;
- determining a chord-length responsively to the measured distance;
- responsively to the chord-length, implanting an artificial chord in the heart by:
- anchoring a tissue anchor that is coupled to a first end portion of the artificial chord to the tissue site while the elongate tool remains in the ventricle, and
- attaching a second end portion of the artificial chord to the component of the native valve;
- and
- subsequently, withdrawing from the heart at least one marker selected from the group consisting of:
- the first radiopaque marker, and
- the second radiopaque marker.
A method, comprising:
- advancing a first radiopaque marker and a second radiopaque marker through vasculature to a heart, the heart having a native valve disposed between an atrium and a ventricle;
- placing the first radiopaque marker against a tissue site in the ventricle;
- placing the second radiopaque marker against a component of the native valve;
- fluoroscopically measuring a distance between the first radiopaque marker at the tissue site, and the second radiopaque marker at the component;
- determining a chord-length responsively to the measured distance;
- and
- responsively to the chord-length, implanting an artificial chord in the heart by:
- attaching a first end portion of an artificial chord to the tissue site, and
- attaching a second end portion of the artificial chord to the component of the native valve.
A method, comprising:
- advancing a first radiopaque marker and a second radiopaque marker through vasculature to a heart, the heart having a native valve disposed between an atrium and a ventricle;
- placing the first radiopaque marker against a tissue site in the ventricle;
- attaching a first end portion of an artificial chord to the tissue site;
- placing the second radiopaque marker against a component of the native valve;
- fluoroscopically measuring a distance between the first radiopaque marker at the tissue site, and the second radiopaque marker at the component;
- determining a chord-length responsively to the measured distance;
- and
- responsively to the chord-length, attaching a second end portion of the artificial chord to the component of the native valve.
Dependencies are inferred from the claim text.