| 摘要 |
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. |
| 主权项 |
1. A surgical device, comprising:
a cannula defining a longitudinal axis; a rotatable cutter supported within the cannula and being configured to cut tissue for passage of the cannula through the tissue, the rotatable cutter including a distal edge; at least one driver drivable by a motor arrangement, the at least one driver configured to rotate and translate the rotatable cutter along the longitudinal axis; at least one sensor assembly configured to sense at least one surgical characteristic of the surgical device during a surgical procedure, the at least one sensor assembly including a movable sensing tip offset radially from the rotatable cutter, the movable sensing tip including a distal edge and a proximal edge, the proximal edge of the movable sensing tip being connected to a biasing member, the biasing member urging the movable sensing tip distally with respect to the rotatable cutter, wherein in a first position, the distal edge of the movable sensing tip extends beyond the distal edge of the rotatable cutter and wherein in a second position, the distal edge of the movable sensing tip and the distal edge of the cutter are aligned along a plane which is perpendicular to the longitudinal axis of the surgical device, the second position being configured to signal the at least one driver to rotate and translate the rotatable cutter; and a controller configured to logically communicate the at least one surgical characteristic between the at least one driver and the at least one sensor assembly. |
