Devices and methods for vertebrostenting
First Claim
Patent Images
1. A method for treating a vertebral body comprising:
- inserting a distal end of a flexible shaft assembly through a cannula and into the vertebral body; and
moving a lever and cam subassembly of the flexible shaft assembly from a first position to a second position, thereby applying a curving force to the distal end of the flexible shaft assembly,wherein the flexible shaft assembly further comprises a handle and a compression spring within the handle,wherein the lever rotates away from the handle in the first position causing the cam subassembly to compress the compression spring and straighten the distal end of the flexible shaft assembly, andwherein the lever is positioned against the handle in the second position causing the compression spring to expand and curve the distal end of the flexible shaft assembly.
1 Assignment
0 Petitions
Accused Products
Abstract
The invention relates to a method of creating a curvilinear cavity within a vertebral body or other body structure. The invention also relates to devices that may be used to perform the steps to create the curvilinear cavity. One such device is a curved drill including a lever and cam sub assembly. The curved drill can include a spring assembly that controls the curvature of the drill. The lever and cam sub assembly can be provided to allow tension to be reduced in the spring assembly.
-
Citations
18 Claims
-
1. A method for treating a vertebral body comprising:
-
inserting a distal end of a flexible shaft assembly through a cannula and into the vertebral body; and moving a lever and cam subassembly of the flexible shaft assembly from a first position to a second position, thereby applying a curving force to the distal end of the flexible shaft assembly, wherein the flexible shaft assembly further comprises a handle and a compression spring within the handle, wherein the lever rotates away from the handle in the first position causing the cam subassembly to compress the compression spring and straighten the distal end of the flexible shaft assembly, and wherein the lever is positioned against the handle in the second position causing the compression spring to expand and curve the distal end of the flexible shaft assembly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A method for treating a vertebral body comprising:
inserting a distal end of a flexible shaft assembly into the vertebral body, wherein the flexible shaft assembly comprises a compression spring and a band retention element; and moving a lever and cam sub assembly configured to cause a curvature to the distal end of the flexible shaft assembly, wherein the lever and cam sub assembly comprises a cam and a cam pusher assembly having a proximal-most end and a distal end, wherein the cam is egg-shaped having an outer surface wall with a small radius side and a large radius side, wherein the cam pusher assembly is in contact with an outer most surface of the cam, and the band retention element is positioned outside of the cam, wherein in the first position, the small radius side of the cam contacts the proximal-most end of the cam pusher assembly, and when the lever is moved from the first position to the second position, the large radius side of the cam contacts the proximal-most end of the cam pusher assembly to linearly translate the cam pusher assembly along a length of the apparatus, wherein the lever rotates away from a handle in the first position causing the cam subassembly to compress the compression spring and straighten the distal end of the flexible shaft assembly, and wherein the lever is positioned against the handle in the second position causing the compression spring to expand and curve the distal end of the flexible shaft assembly. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
Specification