Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Heart valve – Having rigid or semirigid pivoting occluder
Patent
1985-01-25
1986-07-29
Millin, Vincent
Prosthesis (i.e., artificial body members), parts thereof, or ai
Heart valve
Having rigid or semirigid pivoting occluder
A61F 224
Patent
active
046029117
ABSTRACT:
An adjustable ringprosthesis designed particularly for being sewed onto the ring of the mitral valve or tricuspidal valve of a living heart uses a spring ribbon coiled with an overlap of about a half turn covered in a woven, braided or knitted cuff of a suitable synthetic fiber that can be sewed into place. An adjusting device (40) is fixedly positioned on a portion of the spring ribbon which is internally overlapped by an end portion which carries teeth so as to form a rack which can be driven by a screw (15) in the adjusting device for varying the diameter of the ring. The adjusting device is operated by an adjusting tool, the front end of which is guided into a screw-head socket (50) for turning the screw to change the ring diameter. The shaft of the tool is guided by a tube through a connecting piece (51) onto which the guide tube is screwed, and from which it can be unscrewed and removed when there is no further need for post-operative adjustment of the prosthesis.
REFERENCES:
patent: 3840018 (1974-10-01), Heifetz
patent: 4042979 (1977-08-01), Angell
patent: 4473928 (1984-10-01), Johnson
Ahmadi Ali
Moll Henri
General Resorts S.A.
Millin Vincent
Prizant James
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