Novel Direct Transcatheter Mitral Annuloplasty System: Preclinical Feasibility Study

Area of Science:

• Cardiovascular medicine
• Interventional cardiology
• Medical device technology

Background:

• Functional mitral regurgitation (FMR) is a significant clinical challenge.
• Current treatment options for FMR have limitations.
• Transcatheter mitral annuloplasty offers a less invasive approach.

Purpose of the Study:

• To evaluate the safety and efficacy of the novel L-Clip transcatheter mitral annuloplasty device.
• To assess the device's impact on mitral annulus dimensions in a porcine model.
• To determine the feasibility of L-Clip implantation for FMR treatment.

Main Methods:

• The L-Clip device was implanted in 18 porcine models.
• Procedural success, implantation times, and adverse events were recorded.
• Mitral annular dimensions (area, anteroposterior diameter, intercommissural distance) were measured before and after implantation.

Main Results:

• 100% procedural success was achieved with the L-Clip device.
• Significant reductions in mitral annular area (26%), anteroposterior diameter (31%), and intercommissural distance (17%) were observed (P < 0.001).
• No mortality, valve damage, device displacement, or embolism occurred.

Conclusions:

• The L-Clip transcatheter mitral annuloplasty device is safe and effective in a porcine model.
• The device achieved substantial mitral annular reduction with a favorable safety profile.
• L-Clip shows potential as a minimally invasive treatment for functional mitral regurgitation.