| 摘要 |
Apparatus for use as a surgical handpiece is disclosed. An exemplary apparatus includes a body, a rotatable shaft extending from the body and including a tissue contacting component such as a burr, and an outer tube connected to the body and surrounding at least a portion of the shaft. In some configurations, the minimum separation between the tissue contacting component and the outer tube is greater than the minimum separation between the shaft and the outer tube, thereby preventing the tissue contacting component from contacting the shaft upon the application of a force perpendicular to the axis of the shaft. The device may include stand-off elements positioned between the shaft and the outer tube to aid in preventing the tissue contacting component from contacting the outer tube during operation. The outer tube may be flexible with respect to the body, such as by being constructed of a relatively flexible material and/or by being flexibly connected to the body. In some embodiments, the outer tube may be more flexible than the shaft with respect to the body. |
