A drilling system includes a guide-hub that includes contact feet configured to be placed against a drilling surface to maintain a fixed angle with the drilling surface. A drilling insert includes a drill bit and a harness. The drilling insert is configured to be inserted into the guide-hub and the harness is configured to detect when the drill bit punctures the drilling surface and automatically prevent further drilling.

A bone drilling cover fixing device includes an upper fastening member and a lower fastening member. The upper fastening member includes a first base portion and a first coupling portion. The first coupling portion protrudes from an underside of the first base portion and can be inserted into a drilled hole. The lower fastening member includes a second base portion and a second coupling portion. The second base portion includes at least one first arm and at least one second arm. The first arm has a length equal to that of the second arm. The length of the first arm and the length of the second arm are greater than a radius of the drilled hole. When in use, the first and second arms are inserted in an oblique manner into the drilled hole to be positioned at two ends of an underside of the drilled hole.

A perforator for cutting a hole in bone tissue is provided. The perforator comprises an anchor, a hole cutter configured to rotate around the anchor, and conversion means for converting rotational motion of the hole cutter around the anchor into linear motion of the hole cutter towards the material to be cut. The invention is usable to cut holes in a wide variety of materials, in particular for a perforator for cutting a hole in a skull of a human or animal. A kit of parts and a method of cutting a hole are also provided.

A surgical bur including primary flutes and auxiliary flutes. The primary flutes include (i) first clearance surfaces, and (ii) first rake surfaces with first cutting edges. The primary flutes extend from a proximal end of the surgical bur to a distal end of the surgical bur. The auxiliary flutes are localized in central regions or distal regions of the surgical bur. The auxiliary flutes include (i) second clearance surfaces, and (ii) second rake surfaces with second cutting edges. At least one of the auxiliary flutes is located between a pair of adjacent ones of the primary flutes.

The present invention provides minimally invasive subdural evacuating systems and methods of use thereof. The subdural evacuating systems include a cutting component and a rod component, wherein the rod component provides an external physical indicator that the surface of the dura mater has been reached, permitting the cutting component to accurately pierce the dura mater with minimal to no risk of damaging any adjacent anatomy.

A positioning aid for surgical procedures has a carrier system and a template. The carrier system consists of a carrier plate, which is provided with a recess, and supports. The carrier plate can be secured to a cranial bone via the supports over an operating field for the surgical procedure. The template has a template plate which can be connected to the carrier plate in a play-free manner and which comprises a guiding aperture. The guiding aperture is arranged and oriented in the template plate, which consists of a blank, in an individualized manner according to coordinates ascertained in advance. The central longitudinal axis of the guiding aperture matches a trajectory for accessing the operating field for the surgical procedure when the carrier system and the template are assembled and the carrier system is secured to the cranial bone.

A cranial drill guide includes a housing and a drill guide sleeve assembly pivotally attached to the housing. The drill guide sleeve assembly at least two degrees of freedom to allow the drill guide sleeve assembly to be moved to a first pivoted position for forming an angled burr hole through a cranial surface. The two degrees of freedom can comprise a pivoting motion of the drill guide sleeve assembly and an axial motion of a portion of the drill guide sleeve assembly.

A method for computer-assisted planning of a transplant surgery is provided. The method includes obtaining a computer-readable representation of a donor and recipient skeletal fragment; determining surgical cutting planes on the computer-readable representation of the donor skeletal fragment from which a portion of the donor skeletal fragment from the computer-readable representation of the donor skeletal fragment will be harvested; determining virtual cutting guides; performing a virtual osteotomy to separate the portion of the donor skeletal fragment from the computer-readable representation of the donor skeletal fragment from a remainder portion of the donor skeletal fragment based on a position of the virtual cutting guides that are attached to the computer-readable representation of the donor skeletal fragment; positioning the donor skeletal fragment within a transplant region of the recipient skeletal fragment; and creating a hybrid computer-readable representation comprising the recipient skeletal fragment and the portion of the donor skeletal.

A method for automated opening of craniotomies includes, under the control of a computer processor, drilling into a skull for a predetermined distance and determining when there is a conductance drop near the drilling tip that indicates skull breakthrough. If the conductance is not below a predetermined threshold, drilling continues iteratively manner until conductance is below the threshold. A craniotomy pattern may be predetermined and automatically drilled under control of the processor. A cranial window may be created by drilling along a path that interpolates between holes to form the circumference of the window. An automated craniotomy opening apparatus includes a drilling apparatus with a drilling tip, at least one drilling apparatus positioning device, a detection device, and a computer processor that controls the drilling apparatus, the positioning device, and the detection device according to the method. Determining conductance may include use of an impedance detection circuit.

A surgical guide assembly having an attachment device configured to be coupled to a bone. A cut location indicator is coupled to the attachment device. The cut location indicator identifies a location where the bone is to be cut. An arm is coupled to the attachment device, the cut location indicator, or both. A support structure is coupled to the arm. The support structure is configured to have a trackable feature coupled thereto.