公开(公告)号：EP1827259A1

公开(公告)日：2007-09-05

申请号：EP05852684.9

申请日：2005-12-02

申请人： Kyphon Inc.

发明人： SETO, Christine ,  SALOM, Nenita ,  ICO, Cesar ,  LAYNE, Richard, W.

IPC分类号： A61B17/32 ,  A61M29/02

CPC分类号： A61B17/320016 ,  A61B17/0218 ,  A61B2017/00557 ,  A61B2017/320048

摘要： Tissue distractor devices, systems, and methods for soft tissue expansion in order to create a space between the tissue to improve visualization and for increased working space during surgery are disclosed. One method for separating soft tissues for cannula access to a treatment site within a patient body comprises providing a catheter having a tissue distractor on a distal end thereof and positioning the catheter between the soft tissues near the treatment site. Once properly positioned, the tissue distractor is expanded so as to separate the soft tissues. The tissue distractor is then elongated by mechanical actuation so as to provide cannula access to the treatment site. The cannula forms a working channel for surgical procedures, particularly minimally invasive surgical procedures.

公开(公告)号：EP1424947A1

公开(公告)日：2004-06-09

申请号：EP02757673.5

申请日：2002-09-10

申请人： Kyphon Inc.

发明人： BOUCHER, Ryan, P. ,  LAYNE, Richard, W. ,  SALOM, Nenita ,  FOLLMER, Lulu ,  CANTU, Alberto, R.

IPC分类号： A61B17/58 ,  A61B17/34 ,  A61F2/46 ,  A61B17/16

CPC分类号： A61B17/8855 ,  A61B17/3472 ,  A61B2017/00261 ,  A61F2/44 ,  A61F2/4601 ,  A61F2002/4602 ,  A61F2002/4677

摘要： Systems and methods for treating bone employ an expandable body sized to be inserted into bone over a guide wire, without need of an access cannula, and undergo expansion in cancellous bone to compact cancellous bone. The systems and methods further include one or more other instruments sized to pass over the guide wire. The other instruments can comprise, e.g., a cannula, or a device for injecting material into bone. The systems and methods can make use of a special guide wire assembly that includes a guide wire having an enlarged component or tip element on its distal end that can be used to engage the distal end of a bone treatment tool in response to a pulling motion on the guide wire. The pulling motion on the guide wire serves to withdraw the bone treatment tool. The enlarged component or tip element on the distal end of the guide wire can enable the withdrawal of an inner centering body from an outer cannula body after deployment. After withdrawal of the inner body, the outer body can be used, e.g., to guide a bone treatment tool into a bone, or to convey material into bone.