Tensioning device and methods for use
Inventors
Assignees
US Department of Health and Human Services
Publication Number
US-10285813-B2
Publication Date
2019-05-14
Expiration Date
2030-03-04
Interested in licensing this patent?
MTEC can help explore whether this patent might be available for licensing for your application.
Abstract
A tensioning device is provided comprising a locking device. The locking device comprises a locking enclosure comprising a groove and a locking pin comprising teeth. The tensioning device further comprises a suture comprising first and second portions. The first and second portions of the suture and the locking pin are positioned within the groove of the locking enclosure and the locking pin is movable within the groove between a first, outer position in which the teeth are disengaged from the suture so that the locking device is movable along the first and second portions of the suture and a second, inner position in which the teeth are engaged with the suture so that the locking device is not movable along the suture. Methods for treating mitral valve regurgitation are also provided.
Core Innovation
The invention provides an adjustable tensioning device comprising a locking device with a locking enclosure having a groove and a locking pin with teeth. Two portions of a suture and the locking pin are positioned within the groove, with the locking pin moveable between an outer position where the teeth disengage from the suture allowing the locking device to move along the suture, and an inner position where the teeth engage with the suture preventing movement.
The tensioning device is designed to apply and adjust tension in sutures for medical procedures, particularly methods for treating mitral valve regurgitation by forming a suture loop around the mitral valve annulus and securing it with the locking device. The device allows adjustment of suture tension to reduce mitral valve annulus size and subsequent locking to maintain this tension.
Another embodiment includes a locking device with an enclosure, a movable member within a cavity, and a snare member with a loop extending from the movable member through an opening in the enclosure. The diameter of the snare loop is variable depending on the movable member position, thereby securing or releasing sutures passed through the loop, facilitating tension adjustment and locking.
Claims Coverage
The patent includes two independent method claims covering distinct inventive features related to tensioning devices for treating mitral valve regurgitation.
Method for treating mitral valve regurgitation using a locking device with a locking enclosure and locking pin
- Forming a suture loop around the mitral valve annulus. - Coupling the suture to a locking device comprising a locking enclosure and a locking pin with teeth on opposing sides. - Engaging the suture ends with teeth on respective sides of the locking pin within the locking enclosure. - Holding the locking pin in an outer position by coupling it to the inner shaft of a catheter. - Adjusting suture tension by moving the locking device along the suture while the locking pin is disengaged. - Locking suture tension by moving the locking pin from the outer position (teeth disengaged) to an inner position (teeth engaged) inside the locking enclosure thereby securing the device.
Method for treating mitral valve regurgitation using a snare member with a variable diameter loop
- Forming a loop of suture around the mitral valve annulus. - Positioning two portions of the suture through a loop of a snare member extending from a distal opening in an enclosure, mounted to a movable member within the enclosure. - Adjusting suture tension by moving the loop of the snare along the suture. - Locking suture tension by moving the movable member within the cavity to reduce the effective diameter of the loop that extends out of the distal opening, thereby securing the suture portions.
The inventive features encompass methods for treating mitral valve regurgitation by adjusting and locking suture tension using specialized locking devices that incorporate either a locking pin with teeth inside a locking enclosure or a snare member with a variable diameter loop, enabling securement and tension adjustment of sutures around the mitral valve annulus.
Stated Advantages
Enables percutaneous treatment of mitral valve regurgitation, avoiding open-heart surgery.
Allows adjustable and maintainable tension in sutures to modify mitral valve annulus size.
Provides a safety mechanism restricting undesirable loosening over time by securing the locking pin within the locking enclosure.
Facilitates visualization within the body through biocompatible materials enabling MRI, x-ray, fluoroscopy, or angiography imaging.
Documented Applications
Treating mitral valve regurgitation by reducing the circumference of the mitral valve annulus to enhance mitral leaflet coaptation.
Applying tension to sutures in cardiovascular conditions, endoscopic surgeries, and orthopedic conditions.
Using the tensioning device percutaneously to treat mitral valve regurgitation via a suture loop passed through the heart including coronary sinus, great cardiac vein, septal vein, and right heart chambers.
Interested in licensing this patent?