1
Kent W Newgard, Mark G Gordon: Self-occluding intravascular cannula assembly. Davis Newgard Revocable Family Living Trust, Stetina and Brunda, October 17, 1989: US04874377 (287 worldwide citation)

Disclosed is a self-occluding cannula assembly comprising a cannula sheath having a connector hub formed on one end thereof. A self-actuating occluding means is formed within the cannula assembly so as to prevent back flow of body fluids from the cannula. In the cannulae wherein an introducer needle ...


2
Kent W Newgard, Mark G Gordon: Self-occluding intravascular cannula assembly. Stetina and Brunda, November 12, 1991: US05064416 (170 worldwide citation)

A self-occluding cannula assembly comprising a generally tubular cannula sheath having a connecting hub formed on one end thereof and including an occluding means positioned within the inner bore of said connecting hub. The occluding means comprises (a) a generally frusto conical dilator projection; ...