| 摘要 |
A detachable anchor for a guiding tool of a minimally invasive surgery comprises a hollow elongate member 102 and an expandable sleeve 104 having first and second ends 142, 144 and an at least partially double wall structure consisting of inner and outer walls 146, 148 that are attached to each other at the second end, wherein the sleeve is attached at its first end to the hollow elongate member and comprises an inlet for an inflating medium. Preferably the thickness of at least one of the two walls of the sleeve varies along its length and more preferably the thickness of only the outer wall varies, which allows the sleeve to be inflated non-uniformly using an inflating medium. A spacer 150 or a tube (170, figure 3B) for conducting an inflating medium may be arranged between the two walls of the sleeve. Also disclosed is a method for arranging the detachable anchor of the invention with the sleeve in a rolled configuration (104, figure 1) over a shaft of a guiding tool for minimally invasive surgery and unrolling the sleeve over the shaft. |
