A Continuum Robot with Contractible and Extensible Length for Neurosurgery. - Yaru Zhang; Huali Sun; Yue Jia; Dan Huang; Ruyu Li; Zhuolin Mao; Yida Hu 001; Jianbo Chen; Shaolong Kuang; Jie Tang 014; Xinru Xiao; Baiquan Su (ICCA, 2018)