Structures and methods for creating cavities in interior body regions

  • US 6,863,672 B2
  • Filed: 07/30/2002
  • Issued: 03/08/2005
  • Est. Priority Date: 04/06/1998
  • Status: Expired due to Term
First Claim
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1. A method for creating a cavity in cancellous bone comprisingproviding a cannula having an axis that establishes a percutaneous path leading into bone, providing a shaft having an axis and a distal end portion adapted to be deployed inside the bone through the cannula, said distal end portion having a cavity forming structure comprising a surface which directly contacts cancellous bone in response to linear movement of the shaft along the axis of the cannula, deploying the cannula percutaneously to establish a path leading to inside bone, introducing the shaft by movement within and along the axis of the cannula to deploy the cavity forming structure inside the cancellous bone, moving the shaft linearly along, and not rotatingly about the axis of the cannula to cause the surface to form a cavity in the cancellous bone.

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