CPC A61F 2/167 (2013.01) [A61F 2/1662 (2013.01); A61F 2/1672 (2013.01); A61B 2017/00367 (2013.01); A61B 2017/00398 (2013.01); A61B 2090/034 (2016.02); A61F 2/148 (2013.01); A61F 2/1664 (2013.01); A61F 2/1678 (2013.01)] | 12 Claims |
1. An intraocular lens (IOL) injector comprising:
(a) a compressed gas reservoir for retaining a compressed gas;
(b) a guide shaft assembly exposed to the compressed gas reservoir, the guide shaft assembly being moveable along a longitudinal direction from a retracted position to an extended position;
(c) a mechanical brake operably coupled to the guide shaft assembly, the mechanical brake configured to exert on the guide shaft assembly, in response to an operator actuation, a variable resistance to the longitudinal movement of the guide shaft assembly, the mechanical brake having a default engagement with the guide shaft assembly to preclude movement of the guide shaft assembly in response to exposure of the guide shaft assembly to compressed gas in the compressed gas reservoir;
(d) a limiter connected to the guide shaft assembly, the limiter configured to limit a velocity of the guide shaft assembly in response to exposure of the guide shaft assembly to the compressed gas, wherein the limiter includes a disk and a viscous dampener, the disk configured to rotate through the viscous dampener, and the viscous dampener selected to impart friction on the disk; and
(e) a first stop moveable between (i) a passing position permitting movement of the guide shaft assembly from the retracted position to the extended position and (ii) a blocking position precluding movement of the guide shaft assembly to the extended position.
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