US 12,402,972 B2
Cranial access device
James Patrick Moorman, Eden Prairie, MN (US); Walter John Dobrovolny, Saint Paul, MN (US); Jack Michael Mondry, Edina, MN (US); and Mark Andrew Grant, Winnipeg (CA)
Assigned to Monteris Medical Corporation, Minnetonka, MN (US)
Filed by Monteris Medical Corporation, Minnetonka, MN (US)
Filed on Apr. 28, 2022, as Appl. No. 17/661,241.
Prior Publication US 2023/0346501 A1, Nov. 2, 2023
Int. Cl. A61B 90/11 (2016.01); A61B 90/10 (2016.01)
CPC A61B 90/11 (2016.02) [A61B 2090/103 (2016.02)] 18 Claims
OG exemplary drawing
 
1. A cranial access device comprising:
a cranial bolt comprising:
a distal threaded portion,
a proximal drive portion comprising a plurality of protrusions that form an external drive geometry, and
a central passageway configured for receiving a neurosurgical tool; and
a drive adapter comprising:
a distal end configured to receive and interface with the external drive geometry of the proximal drive portion, and
a proximal end configured to receive a driver tool, and
wherein a first outer diameter of a section of the cranial bolt between the proximal drive portion and the distal threaded portion is substantially equal to or is less than an outer diameter of the drive adapter.