Homemade expanded-polytetrafluoroethylene flexible mitral annuloplasty ring

Abstract

A homemade mitral annular prosthesis has been developed using expanded-polytetrafluoroethylene material. It is safe in that it avoids the risk of prosthesis wrinkle when stitches are tied. Simultaneously, it is strong enough to prevent future stretching and rupture. This device has been implanted in 60 patients with good and stable results at 42 months of follow-up. Our flexible mitral annular prosthesis is cost-effective and easily available in developing countries.

Mitral Valve Annuloplasty with a Homemade Single-sized Polytetrafluoroethylene Band in Degenerative Mitral Regurgitation

“…Other authors found the use of pericardial bands to negatively impact the durability of the repair and advocated the use of prosthetic bands (15) . Jeong et al (16) showed satisfactory results using Dacron strips, however the use of PTFE was more commonly reported, probably because of its stronger substance providing more stabilization for the posterior mitral annulus (5,7,8) . In all the previously mentioned studies, authors used different methods to determine the size of the annuloplasty device used.…”

“…These included Dacron bands, polytetrafluoroethylene (PTFE) bands, and pericardial bands. Trying such alternatives was met with variable degrees of success (7)(8)(9) .…”

Results of mitral valve annuloplasty with a standard-sized posterior band: Is measuring important?

“…13 Others have also advocated ''homemade'' annuloplasty bands composed of various materials, including pericardium, polytetrafluoroethylene vascular grafts, and Dacron polyester fabric grafts. [14][15][16][17] Despite attempts from manufacturers to demonstrate the superiority of any one type of annuloplasty device, no single product has clear advantages over the others. The debate continues regarding the use of flexible versus rigid annuloplasty rings or bands in myxomatous MV disease.…”

Post-mortem evaluation of expanded polytetrafluoroethylene (ePTFE) used in mitral valve repair in dogs

“…In addition, expanded polytetrafluoroethylene (ePTFE), which is a linear, nonabsorbent monofilament polymer, has been recently used for chordal replacement and in mitral annuloplasty. 8,9 ePTFE is ideal for use in semi-permanent cardiac grafting because of its histocompatibility, antithrombogenicity, and durability. 10 PTFE has been used to simulate chordae in a sheep model, and the PTFE was found to be completely covered by a tissue sheath with a collagen matrix and endothelial surface.…”