Abstract:
A method of installing an ankle prosthesis system provides an artificial talar joint surface and a family of talar stem components having different physical characteristics. Each talar stem component in the family is sized and configured to be attached to the artificial talar joint surface. The method selects an ankle region to be treated and analyzes the morphology of the ankle region. The method selects among the family one of the talar stem components having a desired physical characteristic based upon the analysis. The method forms a prosthesis-receiving cavity that traverses the joint between the talus and a calcaneus and installs the selected one of the talar stem components in the prosthesis-receiving cavity to prevent movement of the joint. The method attaches the artificial talar joint surface to the selected one of the talar stem components.
Abstract:
A balloon for use in compressing cancellous bone and marrow (also known as medullary bone or trabecular bone). The balloon comprises an inflatable balloon body for insertion into said bone. The body has a shape and size to compress at least a portion of the cancellous bone to form a cavity in the cancellous bone and/or to restore the original position of the outer cortical bone, if fractured or collapsed. The balloon desirably incorporates restraints which inhibit the balloon from applying excessive pressure to various regions of the cortical bone. The wall or walls of the balloon are such that proper inflation of the balloon body is achieved to provide for optimum compression of the bone marrow. The balloon can be inserted quickly into a bone. The balloon can be made to have a suction catheter. The balloon can be used to form and/or enlarge a cavity or passage in a bone, especially in, but not limited to, vertebral bodies. Various additional embodiments facilitate directionally biasing the inflation of the balloon.
Abstract:
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.
Abstract:
A shaft member is sized and configured for introduction through a percutaneous access path into a cancellous bone volume. The shaft has an elongated axis. A cutting blade is sized and configured to be carried by the shaft member and project radially outward of the elongated axis into contact with cancellous bone. The cutting blade is capable of cutting cancellous bone in a path about the elongated axis in response to rotation of the shaft member within cancellous bone.
Abstract:
A first instrument having a distal end is sized and configured to penetrate tissue and a proximal end comprising a first handle assembly. A second instrument including an interior lumen is sized and configured to accept passage of the first instrument. The second instrument has a proximal end comprising a second handle assembly sized and configured to releasably interlock with the first handle assembly to form a composite instrument sized and configured to provide percutaneous access to a cancellous bone region. The second handle assembly is also sized and configured to permit controllably release by a user of the first handle assembly from the second handle assembly to allow removal of the first instrument from the interior lumen. At least one additional instrument is sized and configured for passage through the interior lumen of the second instrument upon removal of the first instrument.
Abstract:
The invention discloses an implantable facet arthroplasty device suitable for treating adjacent level disease. The device is designed for implantation between a first vertebra and a second vertebra. Components of the device include: a crossbar; a first component having a first attachment mechanism adapted to attach to a first location of a spinal fusion device attached to a first vertebra and a second attachment mechanism adapted to attach to the crossbar; and a second component having a second attachment mechanism adapted to attach to a second location of a spinal fusion device attached to the first vertebra and a second attachment mechanism adapted to attach to the crossbar. The first component articulates relative to the second component and the first vertebra articulates relative to the device itself.
Abstract:
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.
Abstract:
Modular spinal prosthesis having one of both of adaptable and configurable components is provided. The modular spinal prosthesis described herein provides an artificial articular configuration to replace damaged, worn or otherwise removed spinal facet elements.
Abstract:
Modular spinal prosthesis having one of both of adaptable and configurable components are provided. The modular spinal prosthesis described herein provide an artificial articular configuration to replace damaged, worn or otherwise removed spinal facet elements.