ENGLISH
Description
The MAYFIELD® Modified Tri-Star Swivel Adaptor (REF A-1116) is designed to provide all the functionality of the standard
Tri-Star swivel adaptor, and in addition offers a feature to tighten the fit of the ratchet extension to the body of the skull
clamp when the adaptor is used with a skull clamp. The tightened fit of the ratchet extension reduces motion that might
be caused by the tolerance differences of these two components, thereby minimizing movement of the skull clamp during
a surgical procedure. (In procedures such as image guided surgery or procedures under a microscope, minimal or no
movement of the skull clamp is desired).
1. Torque Screw with pin
2. Adjustment Screw
3. Locking Lever
4. Swivel Sleeve
5. Torque Screw
6. Small Starburst
7. Swivel Base
8. Pin
9. Dual Starburst Bar
Indications for Use/Intended Purpose
The MAYFIELD Modified Tri-Star Swivel Adapter attaches to the MAYFIELD Base Unit to support headrests and skull clamps
(A-1011, A-1051, A-1012, A-1059, A-1108, and A-2000). It provides optimal positional flexibility via 360-degree rotation as
well as supplementary stability of the skull clamp ratchet extension. The MAYFIELD Modified Tri-Star Swivel Adaptor is also
equipped with two additional starburst attachment points for ancillary equipment when required.
The MAYFIELD Ultra Base Unit (REF A-2101 or A-2102) with its Transitional Member is required when using the MAY-
FIELD Modified Tri-Star Swivel Adaptor.
WARNING:
Failure to read and follow instructions furnished in this product insert may result in skull pin slippage and serious
patient injury, such as scalp lacerations, skull fracture, or even death.
WARNING:
This device is not intended for use in or near the vicinity of a strong magnetic field. (MRI)
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EN – ENGLISH