| 摘要 |
A solid, monolithic shaft member has an engagement end. The engagement end has a proximal end a distal end. The proximal end has a first cross-sectional geometry, and the distal end has a second cross-sectional geometry. The first cross-sectional geometry of the proximal end is different from the second cross-sectional geometry of the distal end. The cross-sectional geometry of the distal end transitions to the a cross-sectional geometry of the proximal end along a longitudinal axis of the engagement end of the solid, monolithic shaft member. This transition provides a gradual, blending, continuously transitioning cross-sectional geometry along the entire length of the longitudinal axis of the engagement end of the solid, monolithic shaft member. |
| 主权项 |
1. A delivery device, comprising:
a solid, monolithic shaft member having an engagement end, the engagement end having a proximal end a distal end, wherein:
a) the proximal end has a first cross-sectional geometry and the distal end has a second cross-sectional geometry, the first cross-sectional geometry of the proximal end being different from the second cross-sectional geometry of the distal end; andb) the cross-sectional geometry of the distal end transitions to the a cross-sectional geometry of the proximal end along a longitudinal axis of the engagement end of the solid, monolithic shaft member providing a gradual, blending, continuously transitioning cross-sectional geometry along the entire length of the longitudinal axis of the engagement end of the solid, monolithic shaft member. |
