Purpose of the study: To evaluate whether the SSB is safe, useful, beneficial and effective in drilling, cutting and removal of bone tissue in neurosurgical and spine procedures.

Sponsored observational clinical pilot study with no control group. Aim is to get a maximum of 20 study subjects, who have disease of the spine or head requiring surgery with bone removal and who are willing to participate into this study.

Inclusion Criteria:

• Disease of the spine or head requiring surgery with bone removal
• Ability to understand the purpose and risks of the study and to give written informed consent
• Age 18-70 years

Exclusion Criteria:

• Previous surgery on the same area
• Abnormalities of bone tissue
• Vulnerable patient (such as prisoner, retarded person, person in nursing home, patient in emergency situation)
• Allergy or hypersensitivity to medical-grade stainless steel or any of alloying components
• Problems with blood clotting

Any 18 to 70 -year old patient scheduled to back/head operation can be recruited according to other inclusion and exclusion criteria.