Rotational tissue cutting control device

An apparatus for controlling a counter-rotatable cutting apparatus, the apparatus comprising:

• a first radial actuator configured to engage a first drive shaft;
• a second radial actuator configured to engage a second drive shaft, the second drive shaft being coaxially disposed with the first drive shaft;
• a counter-rotating mechanism that mechanically couples the first radial actuator and the second radial actuator, the counter-rotating mechanism being configured to cause the second radial actuator to rotate in a second direction when the first radial actuator is turned in a first direction;
• a housing supporting the first radial actuator and the second radial actuator and permitting the first drive shaft and the second drive shaft to extend therethrough;
• and
• a housing supporting the first radial actuator and the second radial actuator and configured to permit the sheath containing the first drive shaft and the second drive shaft extend therethrough;
• and
• a rotation control mechanically coupled with the first radial actuator to permit rotation of the first radial actuator, the first drive shaft and the second drive shaft being simultaneously counter-rotatable responsive to rotation of the first rotation control.

A system for cutting tissue, the system comprising:

• a drive shaft assembly, including:
• a first drive shaft;
• a second drive shaft coaxially disposed around the first drive shaft and configured to rotate independently of the first drive shaft;
• and
• a sheath containing the first drive shaft and the second drive shaft;
• a first radial actuator configured to engage the first drive shaft;
• a second radial actuator configured to engage the second drive shaft;
• a housing supporting the first radial actuator and the second radial actuator and permitting the sheath containing the first drive shaft and the second drive shaft to extend therethrough;
• a rotation control mechanically coupled with the first radial actuator to permit rotation of the first radial actuator relative to the second radial actuator;
• and
• a cutting apparatus including:
• an inner cutting member having a first cylindrical body supporting at least one first cutting surface at a distal end of the cutter and mechanically coupled to the first drive shaft, wherein the first cutting surface faces a first rotational direction relative to an axis of the first cylindrical body and has a first cutting edge at an outer periphery of the first cylindrical body;
• and
• an outer cutting member having a second cylindrical body concentrically disposed around the first cylindrical body and mechanically coupled with the second drive shaft, wherein the outer cutting member supports at least one second cutting surface at the distal end of the apparatus and the second cutting surface faces a second rotational direction relative to the axis and has a second cutting edge at an inner periphery of the second cylindrical body, a tissue being rotatably scissorable between the first cutting edge of the inner cutting member and the second cutting edge of the outer cutting member responsive to application of the distal end of the apparatus and rotation of the rotation control.