Surgical pneumatic motor for use with MRI
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United States of America Patent
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-
May 5, 2009
Grant Date -
Nov 3, 2005
app pub date -
Mar 8, 2005
filing date -
Apr 30, 2004
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A surgical pneumatic motor is designed to be used with or without an MRI machine without affecting or influencing the magnetic characteristic of the MRI machine. The motor includes an improved vane motor with undercuts in the spindle to increase the power faces of the vanes and spindle itself, the holes in the cylinder are modified to increase the sealing area between the spindle. The inlet cylindrical holes and the cylinder holes and grooves are arranged to enhance the life . Wear of the edge of the vanes is decreased by the judicious location of the discharge holes. The bearings are cooled by bypassing a portion of cylinder air before re-entering the air. The noise is attenuated by a cris-cross plug in the hose the temperature of the handle is reduced by a serrated sleeve. Slipping discs in the seal serves to enhance seal life.
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