摘要:
A filler instrument comprises a first chamber section having a first cross sectional area and a second chamber section having a second cross sectional area less than the first cross sectional area. The second chamber section communicates with the first chamber section. The first chamber section includes an inlet for receiving a material into the filler instrument, and the second chamber section includes an outlet for discharging the material from the filler instrument. A first plunger is sized to pass through the first chamber section and not the second chamber section. A second plunger is sized to pass through an interior bore of the first plunger and into the second chamber section. In use, the first plunger displaces material residing in the first chamber section through the second chamber section toward the outlet, and the second plunger displaces material residing in the second chamber section through the outlet.
摘要:
Devices and surgical methods treat various types of adult spinal pathologies, such as degenerative spondylolisthesis, spinal stenosis, degenerative lumbar scoliosis, and kypho-scoliosis. Various types of spinal joint replacement prostheses, surgical procedures for performing spinal joint replacements, and surgical instruments are used to perform the surgical procedures.
摘要:
A device is introduced into the vertebral body through a percutaneous access path. The device is manipulated to modify the cancellous bone volume for introduction of bone filling material. Bone filling material is introduced into the cancellous bone volume modified by the device along the percutaneous path. Discharge of the bone filling material is directed into the cancellous bone volume through an opening that is oriented at an angle relative to the axis of the access path.
摘要:
A cannula is positioned to establish a subcutaneous access path into a cancellous bone. A bone filling material is conveyed into the cancellous bone with a tamping instrument configured to be manipulated independent of the cannula. The bone filling material is compacted with the tamping instrument.
摘要:
A percutaneous path is created into a bone having an interior volume occupied, at least in part, by a cancellous bone, e.g., a vertebral body. An expandable structure is introduced into the cancellous bone by deployment of a tool through the percutaneous path into the cancellous bone. The expandable structure is expanded and the tool withdrawn, leaving the expandable structure expanded inside the cancellous bone. Expansion of the expandable structure within cancellous bone can, e.g., compact cancellous bone, and/or create a cavity in cancellous bone, and/or move fractured cortical bone.
摘要:
A method for delivering material into bone deploys a cannula through soft tissue to establish a subcutaneous path into bone. The method deploys a cavity forming instrument through the cannula to form a cavity in cancellous bone. The method introduces a material into the cavity through the cannula, which includes the advancement of a tamping instrument through the cannula to urge material into the cavity.
摘要:
A percutaneous path is established into a vertebral body, having an interior volume occupied, at least in part, by cancellous bone. A first bone filling material is conveyed through the percutaneous path into a region of the cancellous bone. A second bone filling material is conveyed through the percutaneous path into the region. The first and second bone filling materials can, e.g., incrementally create then enlarge a compressed region of cancellous bone, or displace the fractured cortical bone in increments.
摘要:
A flow path is established into cancellous bone within a vertebral body through a percutaneous path. A bone filling material is conveyed into the flow path in a volume and at a pressure that results in an enlargement of the flow path volume. The enlargement can create a cavity and/or move a fractured cortical plate of the vertebral body toward a desired anatomic position. The bone filling material can comprise, e.g., a bone cement.
摘要:
A cavity creation device is introduced into a cancellous bone volume of a vertebral body through a percutaneous access path. The cavity creating device is manipulated to form a cavity in the cancellous bone volume. A volume of filling material is placed in the cavity by introducing a tube through the percutaneous access path and by conveying the filling material through a side dispensing port of the tube.
摘要:
A percutaneous path is created into a bone having an interior volume occupied, at least in part, by a cancellous bone, e.g., a vertebral body. An expandable stent structure is introduced into the cancellous bone by deployment of a tool through the percutaneous path into the cancellous bone. The expandable stent structure is expanded and the tool withdrawn, leaving the expandable stent structure expanded inside the cancellous bone. Expansion of the expandable stent structure within cancellous bone can, e.g., compact cancellous bone, and/or create a cavity in cancellous bone, and/or move fractured cortical bone.