US Patent No. 11,109,886


Patent No. 11,109,886
Issue Date September 07, 2021
Title Surgical Knife Safety Handle Having User Operable Lock
Inventorship Dana Cote, Saugus, MA (US)
Brian Rapp, Nashua, NH (US)
Paul Karnafel, Foxborough, MA (US)
Xiaoyu Zhang, Chestnut Hill, MA (US)
Assignee Beaver-Visitec International (US), Inc., Waltham, MA (US)

Claim of US Patent No. 11,109,886

1. A method for shielding a knife blade in a safety handle having a handle body with a distal end, a proximal end and a slot extending along a portion of a longitudinal handle body axis and having at least one detent adjacent to the slot, the safety handle also having a knife holder for carrying the knife blade, and a guard positioning mechanism movably disposed within the handle body, the guard positioning mechanism having a guard portion, the method comprising the steps of:depressing a user control mechanism disposed upon a cantilever, wherein the cantilever is secured only at its proximal end to the guard positioning mechanism, the user control mechanism extending outwardly from the handle body via the slot;
wherein the cantilever releasably engages the detent to releasably secure at least one of the knife holder and the guard portion at a position with respect to the handle body, and depressing the user control mechanism releases the cantilever from the detent to allow relative movement between the guard positioning mechanism and the handle body; and
moving the user control mechanism along the slot to selectively cover or expose the knife blade relative to the guard portion.