fig13
![The endoscope and instruments for minimally invasive neurosurgery](https://image.oaes.cc/29b64a5d-b9e0-46db-8537-d28663373146/3811.fig.13.jpg)
Figure 13. A: the tubular retractor designed by Yadav et al.[70] in 2011. Longitudinal cut allows the retractor to be folded onto itself; B: the small size prevents a large cortical opening
Figure 13. A: the tubular retractor designed by Yadav et al.[70] in 2011. Longitudinal cut allows the retractor to be folded onto itself; B: the small size prevents a large cortical opening
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