Devices, systems, and methods for adjustably tensioning artificial chordae between leaflets and papillary muscles or heart walls

By using an adjustable artificial chordae tendineae system between the heart valve leaflets and papillary muscles or the heart wall, and by adjusting the tension of the chordae tendineae by controlling the locking portion with an actuator, the invasiveness and persistence issues of existing mitral valve disease treatments are resolved, achieving effective repair of heart valve regurgitation and optimization of blood flow.

CN113993481BActive Publication Date: 2026-03-20BOSTON SCIENTIFIC SCIMED INC
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Patent Information

Application Number
CN202080042479.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2019-07-12
Filing Date
2020-07-02
Publication Date
2026-03-20
Estimated Expiration
2040-10-11

AI Technical Summary

Technical Problem

Existing technologies for treating mitral valve disease involve complex invasive surgeries that cannot provide a lasting solution to regurgitation, nor can they effectively repair and/or replace damaged chordae tendineae.

Method used

An artificial chordae tendineae system is used, which can be connected between the clamp and the anchor. The locking part is controlled by the actuator to adjust the tension of the chordae tendineae. The anchor is engaged with the leaflets of the heart valve and the papillary muscles or the heart wall. The locking part prevents the movement of the chordae tendineae in a specific direction, thus achieving adjustable tension of the chordae tendineae.

Benefits of technology

It enables visualized adjustment and repair of valvular regurgitation, reduces blood reflux, and provides a more lasting and effective treatment effect.

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Abstract

The present invention relates generally to the field of medical devices for delivering artificial chordae tendinae in a patient. A system for adjusting tension in an artificial chordae tendinae includes an artificial chordae tendinae couplable between a clip and an anchor. The clip is engageable with a leaflet of a heart valve and the anchor is engageable with a papillary muscle or heart wall. The anchor includes a body portion and a locking portion couplable with the artificial chordae tendinae and configured to allow movement of the artificial chordae tendinae in a first direction while preventing movement of the artificial chordae tendinae in a second direction opposite the first direction. An actuator is coupled to the locking portion to selectively release the locking portion to enable selective movement of the artificial chordae tendinae in the second direction.
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