Patent ID: 7146894

Claim:
An automated rotary microtome blade changing apparatus, comprising (a) an upper stage adapted to releasably engage a supply and a waste cartridge, said tipper stage including a loading segment adapted to engage and move blades contained within said supply cartridge into a cutting position; (b) means for releasably clamping said blades in place for cutting operations, comprising a fixed support plate adapted to support a first side of said blade, said fixed support plate in intimate contact with the upper stage body, a clamping plate having a clamping surface capable of engaging a second side of said blade when the clamping plate is pivoted into the clamping position, a pivot means for supporting a midpoint region of said clamping plate, said pivot means itself being integral to or supported by said upper stage, a clamping cam that engages said clamping plate, said clamping cam being mounted on a drive shaft and providing motion orthogonal to said drive shaft axis thereby pivoting the clamping plate about said pivot point; (c) means for powering the movement of blades and clamping mechanisms, comprising an electric motor mounted proximate to said drive shaft, a motor pulley mounted between said drive shaft and said electric motor and interconnected therebetween so that power from said motor is transferred to said drive shaft; and (d) means for electronically controlling all of the functions of the apparatus, comprising a microcontroller in electrical communication with a keypad, a power source, a motor, safety interlocks, a display, and data buttons for both waste and supply cartridges.