1
Perry A Nebergall, Robert C French: Cannula with radiopaque tip. Shiley, Knobbe Martens Olson Hubbard & Bear, December 6, 1983: US04419095 (124 worldwide citation)

A cannula for insertion into a body cavity, duct, or vessel of a patient includes a parent cannula member and an integral radiopaque tip. The tip is configured so as to be distinguishable from internal body parts in an X ray or flouroscopic image, thus serving to precisely locate the position of the ...


2
Perry A Nebergall, Robert C French: Cannula with radiopaque tip. Shiley Incorporated, Knobbe Martens Olson & Bear, May 13, 1986: US04588399 (73 worldwide citation)

A cannula for insertion into a body cavity, duct, or vessel of a patient includes a parent cannula member and an integral radiopaque tip. The tip is configured so as to be distinguishable from internal body parts in an X ray or flouroscopic image, thus serving to precisely locate the position of the ...


3
Perry A Nebergall, Robert C French: Dielectric heating device for heating cannula members. Shiley, Knobbe Martens Olson & Bear, December 9, 1986: US04628168 (9 worldwide citation)

A cannula for insertion into a body cavity, duct, or vessel of a patient includes a parent cannula member and an integral radiopaque tip. The tip is configured so as to be distinguishable from internal body parts in an X ray or flouroscopic image, thus serving to precisely locate the position of the ...


4
Perry A Nebergall, Robert C French: Method for dielectrically joining tubular members. Knobbe Martens et al, October 15, 1985: US04547641 (4 worldwide citation)

A method of dielectrically joining the mated ends of tubular members is, specifically, used in the formation of a cannula for insertion into a body cavity, duct, or vessel of a patient. The cannula preferably includes a parent cannula member and an integrally joined tip. The method comprises the ste ...