UMIP-402 – Gamma Knife Frame Applicator

Problem:Stereotactic brain procedures can involve reaching to difficult anatomic locations within the head. To maintain accuracy, a stereotactic reference frame (frame) is securely applied to patient’s head, establishing a connection between the machine and the patient during a treatment/procedure.The application process usually consists of one or two people holding the frame while a physician inoculates the skin area with local anesthetic and screws in the holding pins into the skull. This process may take from 20 minutes to couple of hours. Often, the pins have to be repositioned because the frame is not in correct place. Additionally, the inoculated sites sometimes do not match with actual pin placement adding to further discomfort of the patient. These problems could be related to the fact that frame is not stationary during the position. There are additional blunt pins included in the frame set that could be used to temporarily fix the frame using the ear canals. They are highly uncomfortable and fell out of favor. There is also a strap that can be attached to the frame allowing to ‘hang’ over the patient. It is also not very stable. The result is severe discomfort for the patient, undergoing an already stressful procedure. Additionally, this leads to unnecessary delays, decreasing the number of procedures performed and reducing patient satisfaction, overall affecting institution’s profitability. Technology: Researchers at the University of Miami have developed a novel stereotactic frame holder with a solid flat base that rests on patient’s shoulders and has adjustable knobs allowing it to be leveled in any position. The frame firmly sits on the base allowing for proper planning of the pins to be done. Most importantly, a single operator can apply the frame in the same or less time, in a reliable and reproducible manner. Peter Gutenberg 305-243-4604

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