Repositioning of components related to cranial surgical procedures in a patient

A system for computer-implemented virtually planning a cranial drilled implant guided surgery of a patient, said system comprising one or more computer processors, said one or more computer processing processors being configured to provide:

• a unit for virtual planning of a cranial drilled implant guided surgery of a patient;
• and
• a unit for generating data based on said virtual planning, wherein said unit for generating data based on said virtual planning comprises
• a unit for virtually planning a position for an anchoring sleeve of a surgical template with said one or more computer processors, based on a position of an artificial physical reference structure on said patient having a defined relation to a bone structure of said patient, wherein said artificial physical reference structure is a temporary anchoring implant, a pre-existing implant, or an anchoring pin or screw,
• a unit for generating a first data set based on said virtually planned position for said anchoring sleeve and based on input data obtained from said artificial physical reference structure,
• a unit for generating a second data set based on input data obtained from a master structure for said surgical template, said master structure having a defined relation to said artificial physical reference structure, and
• a unit for generating a third data set for production of said surgical template based on the first data set and the second data set, wherein the relation of said artificial physical reference structure to said master structure is preserved.

A non-transitory computer-readable storage medium having recorded thereon computer-executable instructions for virtually planning a cranial drilled implant guided surgery of a patient, said computer-executable instructions, when running on one or more processors, performing a method comprising:

• virtually planning a position for an anchoring sleeve of a surgical template with one or more computer processors, based on a position of an artificial physical reference structure on said patient having a defined relation to a bone structure of said patient, wherein said artificial physical reference structure is a temporary anchoring implant, a pre-existing implant, or an anchoring pin or screw,
• generating a first data set based on said virtually planned position for said anchoring sleeve and based on input data, obtained from said artificial physical reference structure,
• generating a second data set based on input data obtained from a master structure for said surgical template, said master structure having a defined relation to said artificial physical reference structure, and
• generating a third data set for production of said surgical template based on the first data set and the second data set, wherein the relation of said artificial physical reference structure to said master structure is preserved.

A computer-implemented method of virtually planning a cranial guided surgery in a subject, said method comprising

• generating a first data set based on input data obtained of an artificial physical reference structure positioned on said subject having a defined fixed relation to a bone structure of said subject,
• generating a second data set based on input data of a master structure for a surgical template, said master structure having a defined relation to said artificial physical reference structure, and
• generating a third data set for production of said surgical template based on the first data set and the second data set, wherein the relation of said artificial physical reference structure to said master structure is preserved,
• wherein the artificial physical reference structure is a pre-existing implant, and wherein said surgical template of said third data set is lockable into a correct position by a template abutment interlocking to the pre-existing implant.

A computer-implemented method of virtually planning a cranial guided surgery in a subject, said method comprising

• virtually planning a position for an anchoring sleeve of a surgical template with one or more computer processors, based on a position of an artificial physical reference structure positioned on said subject having a defined fixed relation to a bone structure of said subject, wherein said artificial physical reference structure is an anchoring pin or anchor screw,
• generating a first data set based on said virtually planned position for said anchoring sleeve and based on input data obtained of said artificial physical reference structure,
• generating a second data set based on input data of a master structure for said surgical template, said master structure having a defined relation to said artificial physical reference structure, and
• generating a third data set for production of said surgical template based on the first data set and the second data set, wherein the relation of said artificial physical reference structure to said master structure is preserved.