| 摘要 |
<p>The surgical apparatus includes a first sub-assembly including a handpiece (12) and a latch adapter and a second sub-assembly (30) comprised of a latch (40), an extension tube secured to the latch, and a blade extension (32) received within the extension tube (38) for coupling to a power element in the handpiece. The second sub-assembly is latched to the handpiece of the first sub-assembly and the blade extension is screw-threaded to the power element whereby ultrasonic energy may be transmitted through the blade extension to the blade. A centering device (54) centers the distal end of the blade extension in the extension tube and is located at the node point. By axially advancing and retracting the latch, the extension tube may overlie and wholly encompass the blade and expose it for use, respectively.</p> |
