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Publication Number
US-10517729-B2
Publication Date
2019-12-31
Expiration Date
Abstract
Embodiments of the present disclosure include a method of transcatheterly delivering a band to encircle multiple papillary muscles in a heart. The method may comprise transcutaneously inserting a catheter into a heart and delivering a first end of a first guidewire to a ventricle in the heart via the catheter. The method may further comprise looping a first end of a first guidewire around a first papillary muscle and a second end of a second guidewire around a second papillary muscle. The first end of the first guidewire and the second end of the second guidewire may be brought out of the body while the first and second guidewires remain looped around the first and second papillary muscles, respectively. The first and second guidewires may be interconnected, and at least one end of the first and second guidewires may be pulled to establish a single loop around the papillary muscles.
Core Innovation
The invention relates to transcatheterly improving cardiac function by delivering at least one guidewire to a ventricle in a heart and looping the guidewire around a plurality of papillary muscles in the ventricle. Using the guidewire, a band is directed around the plurality of papillary muscles, and the band is tightened in a single loop around the plurality of papillary muscles to pull the plurality of papillary muscles toward each other.
In the described approach, the guidewire is then transcatheterly removed from the heart after tightening. In variants, the tightening includes reaching a predefined circumference of the loop and locking the band around the plurality of papillary muscles when the circumference of the loop reaches a predefined range.
Additional aspects describe routing and guidewire manipulation to achieve the band and loop configuration. The band can be directed around the plurality of papillary muscles while passing through spaces among trabeculae between the papillary muscles and a ventricular wall, and catheter configurations can include steerable catheters and pre-shaped catheters to aid in looping the guidewire around the plurality of papillary muscles.
Claims Coverage
The document provides three independent method claims covering transcatheterly improving cardiac function using guidewires, a band tightened into a single loop around papillary muscles, and guidewire removal. The inventive core is complemented by additional independent claim limitations on circumference-based locking and on routing through spaces among trabeculae, each refining how the loop and band are established and secured.
Transcatheter guidewire looping around papillary muscles with single-loop band tightening
A method comprising transcatheterly delivering at least one guidewire to a ventricle; looping the at least one guidewire around a plurality of papillary muscles in the ventricle; directing, using the guidewire, a band around the plurality of papillary muscles; tightening the band in a single loop around the plurality of papillary muscles to pull the plurality of papillary muscles toward each other; and transcatheterly removing the guidewire from the heart.
Circumference-range locking of a single-loop band around papillary muscles
A method comprising transcatheterly delivering at least one guidewire to a ventricle; looping the at least one guidewire around a plurality of papillary muscles in the ventricle; directing, using the guidewire, a band around the plurality of papillary muscles; tightening the band in a single loop around the plurality of papillary muscles to pull the plurality of papillary muscles toward each other; locking the band around the plurality of papillary muscles when a circumference of the loop reaches a predefined range; and transcatheterly removing the guidewire from the heart.
Trabecular-space routing for band tightening and circumference-range locking
A method comprising transcatheterly delivering at least one guidewire to a ventricle; passing the guidewire through a plurality of spaces among the trabeculae in the ventricle; directing, using the guidewire, a band through the plurality of spaces among the trabeculae; tightening the band in a single loop; locking the band when a circumference of the loop reaches a predefined range; and transcatheterly removing the guidewire from the heart.
Across the independent claims, the common inventive approach is to transcatheterly deliver a guidewire to a ventricle, use the guidewire to establish a band around papillary muscles, and tighten the band into a single loop to pull papillary muscles toward each other, with the guidewire subsequently removed. Additional claim scope is provided by circumference-based locking and by routing through spaces among the trabeculae to enable band passage and loop formation.
Stated Advantages
Documented Applications
No documented applications found
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