| 摘要 |
A pair of blades, one or both of which reciprocates along a longitudinal axis, comprises a first blade and a second blade, each blade having a proximal end, a distal end, a length extending between, and a cutting edge extending along a portion of the length to the distal end. A width of each blade is stepwise reduced along the cutting edge to the distal end so that one or more teeth from a series of teeth has a cutting surface that is receded relative to a tooth from the series of teeth that is closer to the proximal end. The teeth of the series of teeth are uniformly oriented relative to the longitudinal axis. |
| 主权项 |
1. A pair of blades one or both of which is adapted to be reciprocated along a longitudinal axis, the pair of blades comprising:
a first blade having
a proximal end,a distal end,a length extending between the proximal end and the distal end, anda cutting edge extending along a portion of the length to the distal end,wherein the cutting edge includes a series of teeth, andwherein a width of the first blade is stepwise reduced along the cutting edge to the distal end so that one or more teeth from the series of teeth has a cutting surface that is receded relative to a tooth from the series of teeth that is closer to the proximal end, andwherein the teeth of the series of teeth are uniformly oriented relative to the longitudinal axis; and a second blade having
a proximal end,a distal end,a length extending between the proximal end and the distal end,a cutting edge extending along a portion of the length to the distal end,wherein the cutting edge includes a series of teeth, andwherein a width of the second blade is stepwise reduced along the cutting edge to the distal end so that one or more teeth from the series of teeth has a cutting surface that is receded relative to a tooth from the series of teeth that is closer to the proximal end, andwherein the teeth of the series of teeth are uniformly oriented relative to the longitudinal axis. |
