1
Steven M Smith: Device for sequential percutaneous dilation. Canyon Medical Products, Thorpe North & Western, September 5, 1989: US04862891 (244 worldwide citation)

A device for enabling sequential dilation of a percutaneous tissue opening to seccessively larger opening sizes. The device includes a first-elongated dilator element having a forward end, an intermediate dilator body and a tail section extending from shoulder structure at the junction of the interm ...


2
Smith Steven M: Device for sequential percutaneous dilation.. Canyon Medical Products, September 27, 1989: EP0334116-A1 (50 worldwide citation)

A device (10) for enabling sequential dilation of a percutaneous tissue opening to successively larger opening sizes. The device (10) includes a first-elongated dilator element (11) having a forward end (13), an intermediate dilator body (14) and a tail section (12) extending from shoulder structure ...