The PANORAMITRA perivalvular tissue retractor was successfully applied in approximately 20 cardiac surgery cases without structural failure, providing consistent subvalvular exposure.
The novel PANORAMITRA retractor provides a practical, reusable, and stable solution for achieving consistent subvalvular exposure during minimally invasive and conventional mitral valve surgery.
In degenerative mitral valve surgery, repair typically involves annuloplasty, resection ofdiseased segments, and neochordal implantation for leaflet resuspension. However,subvalvular exposure, particularly of the papillary muscles, remains technicallychallenging under minimally invasive approaches—especially in patients withredundant leaflet tissue. Here, we describe the clinical application of “PANORAMITRA,” (Senko MedicalInstrument Mfg. Co., Ltd., Tokyo, Japan) a novel perivalvular retractor originally designed and developed by our surgical team, made of medical-gradepolyetheretherketone (PEEK). The device can be easily deployed through a mini-thoracotomy and precisely positioned within the mitral annulus to facilitate subvalvular visualization. Key words
Inaba et al. (2026) studied Cardiac surgery requiring subvalvular exposure (n=20). PANORAMITRA perivalvular tissue retractor was evaluated on Structural failure during clinical use. The PANORAMITRA perivalvular tissue retractor was successfully applied in approximately 20 cardiac surgery cases without structural failure, providing consistent subvalvular exposure.