Patent ID: 11877758
Assignee: nan
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. Release System and Cutting Profile applied to disposable self-locking intracranial drill bit comprising:
a cutting shaft having a drill bit at one end and cams proximate to an other end,
an external ring having internal faces that interact with said cams and external surfaces,
a bushing configured to fit within a spring-containing housing and having internal surfaces configured to interact with external surface of the external ring, wherein said cams on the cutting shaft comprise flat faced cams and a helically faced cam located between the flat faced cams, and
a dragging geometry is effected by opposed cams and surfaces, configured to interact while the drill bit experiences resistance to forward movement and to disconnect when the drill bit experiences no resistance to forward movement, by an action of a spring on the external ring thereby ending connections between the cams mounted on the cutting shaft and the surfaces of the external ring and cooperating internal surfaces of the bushing.