| 摘要 |
Interacting cutting blades, forming a part of a rotary tissue cutter, has an outer cutting blade (28) including an edge (36) defining a port (34) formed near a distal end (30) of the outer cutting blade (28). An inner cutting blade (12) for rotation relative to the outer cutting blade (28) is held within the outer cutting blade (28). The inner cutting blade (12) includes one or more cutting elements (20) formed near a distal end (18) such that an edge (14) of the inner cutting blade (12) forms resilient frictional contact with the edge (36) and the cutting elements (20) each have a convex shape such that an apex (22) of each of the cutting elements (20) extends within the port (34) and beyond an inner surface (38) of the outer cutting blade (28) as the inner cutting blade (12) is rotated within the outer cutting blade (28).
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