| 摘要 |
A working channel for separating paraspinal muscles and minimizing muscle trauma during spinal surgery includes a flared upper section having a distal end, a proximal end and an interior lumen traversing through the flared upper section. The proximal end of the flared upper section having a larger cross-sectional area than the distal end of the flared upper section. A lower elongate body section extends fixedly from the distal end of the flared upper section. The lower elongate body section has a distal end for inserting into a patient, a proximal end connected to the flared upper section and an interior lumen traversing through the lower section. The flared upper section and the lower elongate body section each have an inner surface and an outer surface. A thickness between the inner and outer surfaces of the lower elongate body section is the same at each point along the longitudinal axis. |
