Systems and methods for delivering material into bone deploy a cannula through soft tissue to establish a subcutaneous path into bone. A material is introduced into bone through the cannula. The systems and methods advance a tamping instrument through the cannula to urge material residing in the cannula...http://www.google.com.hk/patents/US6613054?utm_source=gb-gplus-share專利 US6613054 - Systems and methods for placing materials into bone
