1
Robert P Leather: Venous valve cutter for the incision of valve leaflets in situ. Heslin Watts & Rothenberg, January 15, 1985: US04493321 (54 worldwide citation)

A blade is drawn by means of a rod attached centrally of its cutting edge so that a portion of the blade extends on either side of the rod. An elongate centering device precedes the blade and its protective encasement so as to ensure that the device will not engage side branches of the vein. A cathe ...


2
Leather Robert Paul: A venous valve cutter for the incision of valve leaflets in situ. Leather Robert Paul, HESLIN Robert E, December 8, 1983: WO/1983/004174

A blade (7) is drawn by means of a rod (6) attached centrally of its cutting edge (9) so that a portion of the blade extends on either side of the rod. An elongate centering device (1) precedes the blade (7) and its protective encasement (10) so as to ensure that the device will not engage side bran ...


3
Leather Robert Paul: A venous valve cutter for the incision of valve leaflets in situ.. Leather Robert Paul, June 20, 1984: EP0110965-A1

A blade (7) is drawn by means of a rod (6) attached centrally of its cutting edge (9) so that a portion of the blade extends on either side of the rod. An elongate centering device (1) precedes the blade (7) and its protective encasement (10) so as to ensure that the device will not engage side bran ...