Described herein are cannulas having a stepped exterior. Also described are methods of making and using these cannulas, for example to deliver one or more materials to the central nervous system of an animal.
申请公布号
US8337458(B2)
申请公布日期
2012.12.25
申请号
US20100891043
申请日期
2010.09.27
申请人
BANKIEWICZ KRZYSZTOF;SOMMER JUERG M.;GENZYME CORPORATION, A SANOFI COMPANY;THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
