Patent ID: 11937985
Assignee: BRAINLAB AG
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A mask system for immobilizing a patient's head relative to a support rail structure of a head immobilization system, comprising:
at least one deformable patient mask sheet; and,
at least one pin extending from the support rail structure of the head immobilization system; and
a mask frame coupled to the at least one deformable patient mask sheet, the mask frame including:
plural interface sections, each interface section including a releasable pin receiver having a sawtooth catch structure on a surface, wherein each releasable pin receiver is adapted to receive a corresponding one of the at least one pin such that the saw tooth catch structure engages a corresponding saw tooth structure on the pin to allow the pin to be pushed progressively further into the releasable pin receiver, but to prevent removal of the pin from the pin receiver unless released; and
a release mechanism including grasping sections that, when pressed, cause the sawtooth catch structure of each releasable pin receiver to release from engagement with the corresponding saw tooth structure of the corresponding at least one pin.