초록 ▼

Hand operable pneumatically driven medical actuator and method of use preferably utilized for orthopedic or orthodontic manipulation in a user enabled pulse modulated mode. In one form, the medical actuator includes a free piston moveable within the body of the actuator responsive to pressurized gas

Hand operable pneumatically driven medical actuator and method of use preferably utilized for orthopedic or orthodontic manipulation in a user enabled pulse modulated mode. In one form, the medical actuator includes a free piston moveable within the body of the actuator responsive to pressurized gas selectively injected through a valve controlled by the hand supporting the actuator. The valve is operable in both pulse width and pulse frequency modulation modes, initiating corresponding pneumatic forces and acceleration effects on the free piston. A piston stop attached to a shaft extending from the medical actuator converts piston momentum into pulses of force transferable through the shaft to a translation device external to the medical actuator. The force pulses conveyer to the orthopedic or orthodontic translation device act upon teeth, bones, implants, or the like. Pulse modulation in a single hand operating mode permits the user to impart precise dynamic forces to the thing being manipulated.

대표청구항 ▼

[ I claim:] [1.] A medical actuator, comprising:a tubular body having a first and a second end;a free piston slidable within the tubular body;a cap means for closing the first end of the tubular body;a shaft extending through the cap means and the free piston;means attached to the shaft for limiting

[ I claim:] [1.] A medical actuator, comprising:a tubular body having a first and a second end;a free piston slidable within the tubular body;a cap means for closing the first end of the tubular body;a shaft extending through the cap means and the free piston;means attached to the shaft for limiting movement of the piston toward the second end of the tubular body;means for positioning the piston proximate the first end of the tubular body;user controllable means for generating a selective pressure in a region between the piston and the cap means; andmeans for transferring movement in the shaft to an outside body, the movement of the shaft being responsive to contact between the piston and the means for limiting movement.