A newly designed adapter for testing an ex vivo mitral valve apparatus.

Few instruments are currently available to test mitral valve function in an ex vivo state due to the technical difficulties involved. To investigate the native ex vivo mitral valve or prosthetic mitral valve with chordae, we developed a mitral valve adapter with an annulus suturing portion and 2 papillary muscle suturing sites that can be changed in angle, direction, and length of chordae. We used this adapter to test an ex vivo mitral apparatus in beagle dogs and evaluated the morphology and function of the mitral apparatus by endoscopy. Our newly designed mitral valve adapter proved extremely useful for examining the ex vivo mitral valve anatomy and function and for testing stentless mitral prostheses with annular-papillary muscle continuity.

[1]  M Janier,et al.  Mitral subvalvular apparatus: different functions of primary and secondary chordae. , 1997, Circulation.

[2]  A. Bolger,et al.  Three-dimensional dynamic geometry of the normal canine mitral annulus and papillary muscles. , 1996, Circulation.

[3]  C. Acar,et al.  Morphologic classification of the mitral papillary muscles. , 1996, The Journal of heart valve disease.

[4]  A. Berrebi,et al.  The "physio-ring": an advanced concept in mitral valve annuloplasty. , 1995, The Annals of thoracic surgery.

[5]  F. Fantini,et al.  Surgical technique of implanting the stentless porcine mitral valve. , 1995, The Annals of thoracic surgery.

[6]  D. Simionescu,et al.  New evolution in mitral physiology and surgery: mitral stentless pericardial valve. , 1995, The Annals of thoracic surgery.

[7]  K S Kunzelman,et al.  Anatomic basis for mitral valve modelling. , 1994, The Journal of heart valve disease.

[8]  G Rosenberg,et al.  Relative blood damage in the three phases of a prosthetic heart valve flow cycle. , 1993, ASAIO journal.

[9]  K. Liao,et al.  Intraoperative epicardial echo/Doppler evaluation of a stentless, chordally supported quadricusp mitral bioprosthesis. , 1993, ASAIO journal.

[10]  L. Mickleborough,et al.  A Simplified Concept for a Bileaflet Atrioventricular Valve that Maintains Annular‐Papillary Muscle Continuity , 1989, Journal of cardiac surgery.

[11]  E D Wigle,et al.  Morphology of the Human Mitral Valve: II. The Valve Leaflets , 1970, Circulation.