Safety scalpel

Claim 1

A safety scalpel assembly which comprises: a handle which includes a facing surface, the facing surface of the handle characterized by locating pins and further characterized by guide tracks, which guide tracks terminate in locking apertures; a cartridge having an elongated slot formed therein, a rear wall formed in the cartridge and aligned with the slot to limit the movement of a scalpel slidably received in the slot, the scalpel having a blade and a shank, said movement being solely within the cartridge, the scalpel adapted to be fully recessed in the cartridge when the scalpel is in a retracted position and to extend from the cartridge when the scalpel is in an extended position, a track formed in the wall of the housing, means to bias the scalpel to its retracted position within the slot, means to move the scalpel from its retracted position to its extended position, said means to move secured to the scalpel and extending into he track and travelling along the track, means to lock the scalpel in its extended position; and the cartridge having a facing surface, which abutts to the facing surface of the handle and wherein the facing surface of the cartridge is characterized by locator holes and locking members, the pins of the handle received in the holes and the locking members releasably engaged in the locking apertures of the handle when the handle is secured to the cartridge.