CRANIAL BURR HOLE PLUG WITH ANTI-SKEWING CLAMPING MECHANISM

摘要

A burr hole plug comprises a plug base configured for being mounted around a burr hole. The plug base includes an aperture through which an elongated medical device exiting the burr hole may pass. The plug base is configured to accommodate a variety of cranium forms without requiring deformation of the plug base. A plug base holding tool is used to secure the plug base to the cranium, wherein the tool aligns fasteners with the plug base for insertion through the plug base and into the cranium. The burr hole plug further comprises a retainer configured for being mounted within the aperture of the plug base to secure the medical device. The retainer includes a clamping mechanism that secures the elongated medical device in the burr hole plug, wherein the movement of the clamping mechanism is controlled to prevent skewing of the clamping mechanism.

主权项

1. A cranial burr hole plug, comprising:
a plug base configured for being mounted around a cranial burr hole, the plug base including an aperture through which an elongated medical device exiting the burr hole may pass; and a retainer configured for being positioned within the aperture of the plug base, the retainer including a retainer support, a slot formed in the retainer support for receiving the medical device, and a clamping mechanism having a clamping bar, with at least one leg extending perpendicularly from the clamping bar and being slidably engaged with the retainer support, thereby allowing the clamping bar to be slid from an open position that allows the medical device to be received in the slot to a closed position that secures the medical device within the slot, wherein the retainer support further comprises at least one tapered arm, each adjacent to one of the at least one leg, that at least partially restrict movement of the clamping mechanism by reducing the width of a lateral space in which the clamping mechanism slides as the clamping mechanism moves toward the closed position.