Kyphoplasty device and method
AssigneePan Medical US Corporation
InventorMax Nasralla
Life of this patent
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Abstract
A kyphoplasty device and method offers access and serves as a channel to radially locate sites in the vertebral body using a curved needle made of a material, such as nitinol, which recovers its shape after passing through a straight cannula. The needle serves as a channel facilitating precise positioning of an inflatable bone tamp. The bone tamp creates a void when inflated at the proper location within a nonlinear, arcuate-shaped channel defined by the shape of the needle within the vertebral body. After the bone tamp is deflated and removed, the needle serves as a conduit for delivery of cement into the cavity formed by the bone tamp, without repositioning the needle.
Claims13
A kyphoplasty device comprises:
- an outermost cannula having a straight channel, the channel being of no greater than ten gauge, the channel being defined by a cylindrical wall, and the channel having a distal end at a length of at least thirty millimeters from a proximal end;
- an arcuate needle having a length at least ten millimeters longer than the length of the channel of the outermost cannula, and the needle having an arcuate end portion made of a material that has a flexibility and size selected such that the needle is insertable through the straight channel of the outermost cannula and the needle has a resiliency selected such that the arcuate end portion of the needle returns to an arcuate shape of the arcuate end portion upon exiting the channel of the outermost cannula;
- and
- an inflatable bone tamp having an outer diameter, when deflated, such that the bone tamp is insertable through the arcuate needle, while the arcuate needle is inside the outermost cannula, to a precise location where the bone tamp is needed to stabilize or reverse compression caused by vertebral collapse or fracture of vertebral bone structures, vertebral bone structures not being any portion of the device.
Dependencies are inferred from the claim text.