Inventor
DEVRIES RONALD A
US8 patents
⚠️ This page may combine multiple inventors who share the name “DEVRIES RONALD A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MEDTRONIC INC
5 patentsUS6645194B2Nov 11, 2003
Flexible disc obturator for a cannula assembly
MEDTRONIC INC142 citations97
US7276055B2Oct 2, 2007
Oval-shaped cardiac cannula
MEDTRONIC INC41 citations95
US6146371ANov 14, 2000
Oval-shaped cardiac cannula
MEDTRONIC INC70 citations95
US5817071AOct 6, 1998
Oval-shaped cardiac cannula
MEDTRONIC INC75 citations95
US6447484B1Sep 10, 2002
Flexible disc obturator for a cannula assembly
MEDTRONIC INC64 citations94