A surgical device is described. The surgical device may comprise a rotatable cutter configured to cut tissue for insertion of a cannula, and a first driver configured to be driven by a motor arrangement and to rotate the cutter. The surgical device may further include, for example, the cannula, at least one of the rotatable cutter and the first driver being disposed in a bore of the cannula. In one embodiment, the rotatable cutter may include an auger having a cutting thread. In another embodiment, the rotatable cutter may include a disk-shaped blade.
1. A surgical device comprising:
a cannula;
a rotatable cutter configured to cut tissue for insertion of the cannula, the rotatable cutter extending beyond a distal end of the cannula;
a first driver driven by a motor arrangement and to rotate the cutter, at least one of the rotatable cutter and the first driver being entirely disposed in a bore of the cannula; and
a second driver driven by a motor arrangement and to move the cannula to at least one of an extended position and a retracted position, wherein in the extended position the cannula entirely covers the rotatable cutter and in the retracted position the cannula exposes at least a portion of the rotatable cutter.
2. The surgical device according to claim 1 , further comprising:
an electro-mechanical driver including the motor arrangement, the motor arrangement driving the first driver and the second driver.
3. The surgical device according to claim 2 , wherein the motor arrangement includes two motors, a first one of the motors driving the first driver, and a second one of the motors driving the second driver.
4. The surgical device according to claim 3 , further comprising:
a control system configured to control the motor arrangement.