| 摘要 |
<p>Two vertebra fillers both comprise a conduit (7) and a conduit base (10) for fixing the conduit (7). A guide stylet (2) is provided in the inner cavity of the conduit (7), the guide stylet (2) is fixed on a guide stylet base (11), and the end of the conduit (7) is provided with a sealed or ventilated pocket (1) made of metalloids material or absorbable material which is soft and conforms to biocompatibility. The outside of the conduit (7) is covered with an outer cannula (8), the outer cannula (8) is fixed on an outer cannula base (9), and a detachable connection is provided between the outer cannula base (9) and the conduit base (10). A taper outer cannula reducing tapered part (5) connected with a small diameter outer cannula (4) or an outer cannula inner convex part is provided at open end of the outer cannula (8). The conduit (7) is provided with a corresponding conduit reducing tapered part (6) at the situation of the outer cannula reducing tapered part (5) or the outer cannula inner convex part, and the conduit reducing tapered part (6) is connected with a smaller diameter conduit (3). The pocket (1) covers the conduit (7) by open end thereof, which is located between the outer cannula (8) and the conduit (7), and is hooped at the outer wall of the conduit (7) by the outer annula (8).</p> |
