Modified Clover Technique Using Automated Suture Placement and Securing Technology in a Passive Beating Heart Model

Overview

Journal Bioengineering (Basel)

Date 2024 Jul 27

PMID 39061748

Authors

Severin Laengle

Aldo Suria

Thomas Poschner

Sahra Tasdelen

Antonios Pitsis

Alfred Kocher

Martin Andreas

Affiliations

Soon will be listed here.

Abstract

Tricuspid regurgitation (TR) is a prevalent finding in echocardiography and in case of severe disease is associated with impaired patient outcome. Clover repair offers a surgical solution that can be applied for the treatment of primary and secondary TR. An ex vivo passive beating porcine heart model was created to test a modified clover technique using automated suturing devices and to compare this approach to standard ring annuloplasty. Secondary TR was induced in 10 porcine hearts and the backflow of fluid was assessed. The primary endpoint of this study was regurgitant volume measured in mL at the site right atrial cannula. The baseline regurgitation was 43.3 ± 10.8 mL. The mean regurgitant volume was significantly reduced after all repair procedures to 22.2 ± 5.9 mL with isolated ring annuloplasty, 12 ± 3.9 mL with the modified clover, and 7.6 ± 3.4 mL with the combined procedure ( < 0.0001). The modified clover technique shows how to effectively reduce TR in an ex vivo model. This method may be suitable to facilitate tricuspid repair, especially for totally endoscopic valve surgery.

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