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

Claim 10:
11. A system for immobilizing a patient's head relative to a head immobilization system, comprising:
a support rail on the head immobilization system, the support rail including at least one pin having a saw toothed surface;
a deformable plastic sheet; and
a mask frame, the mask frame including:
an engagement system for engaging a portion of the deformable plastic sheet and 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 extending from the support rail structure such that the saw tooth catch structure is adapted to engage the corresponding saw toothed surface of 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 saw toothed surface of the corresponding one of the at least one pin.