| 摘要 |
SURGERY A surgical fixation ring is described which allows fixation of the eye. The device has an adjustable swivel fixation ring that facilitates a full 180 DEG rotation. The ring further includes protrusions that are designed to atraumatically attach to the sclera. The fixation ring is designed with an arcuate bottom that mates with the sclera to further decrease potential slippage of the device by mating with the curvature of the sclera. The device is preferably a unitary structure that could be reused after re-sterilization by steam, gamma, ETO or other such methods. The proposed device provides easy re-use and cleaning due to the elimination of any small crevices between the fixation ring and handle assembly. The device also provides a smaller working diameter that allows more clearance between the ring base and other facial obstructions. The arcuate bottom of the ring is contoured to the curvature of the sclera gives more surface contact to the device to assist and secure fixation. Finally, due to the nature of the living hinge design and the attachment position of the hinge to the segmented ring base, the protrusions on the arcuate bottom are always in the correct orientation pointing toward the sclera. This feature allows the surgeon to usually manipulate the handle assembly to multiple orientations without the potential of the ring base swiveling away from the scleral surface.
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