摘要:
A prosthetic device and a method of implanting same between two vertebrae of a vertebral column to stabilize the column, according to which each vertebrae is engaged by a spacer, and the spacers are connected to permit relative movement between the spacers so that the distance between the spacers can vary to conform with the distance between the vertebrae and accommodate bending movements of the vertebral column.
摘要:
One technique of the present application includes: evaluating a patient having a previously implanted spinal construct and corresponding spinal fusion from an earlier procedure and determining a spinal segment adjacent to the spinal fusion is degenerating after completion of the earlier procedure. After this determination, the previously implanted spinal construct is augmented by attaching a flexible polymer elongated member to the spinal segment adjacent to the spinal fusion with a bone fastener and by coupling the flexible polymer elongated member to one or more elements of the previously implanted spinal construct. In one form, the elongated member is at least partially comprised of polyetheretherketone.
摘要:
A posterior spinal fixation device or dynamic spinal stabilization device or other orthopedic device includes an active agent-delivery component. The active agent-delivery component has an active agent impregnated therein or adsorbed thereon or otherwise contained therein and is configured to release the active agent locally after the device is implanted in a patient. One preferred type of implant in accordance with the invention is an implant for stabilizing a spinal motion segment that includes a spacer member positionable between adjacent spinous processes or transverse processes or other posterior spinal element, including an implanted anchor element.
摘要:
An implant assembly for stabilizing a spinal motion segment includes a spacer member positionable between adjacent spinous processes and upper and lower engaging members extending from the spacer member. The upper and lower engaging members engage at least one lamina to resist flexion of the spinal motion segment.
摘要:
An industrial shredder is described that includes one or more electric motors controlled by a variable frequency drive. One or more fixed displacement hydraulic pumps are powered by the one or more electric motors and hydraulically coupled to one or more hydraulic motors in a closed loop configuration. Hydraulic pressure in the closed loop is substantially similar on a first side of the one or more hydraulic motors and on a second side of one or more hydraulic motors. One or more cutting shafts are coupled to the one or more hydraulic motors such that the hydraulic motors cause the cutting shafts to rotate.
摘要:
Connector assemblies are provided to couple an elongate member extending along the spinal column to a bone engaging implant engaged to the spinal column. The connector assembly includes a coupler having an implant coupling portion and an elongate member coupling portion. The positioning and orientation of the coupler relative to the implant and elongate member can be adjusted to facilitate engagement of the connector assembly between the implant and elongate member.
摘要:
A dynamic surgical table system includes any one or combination of a head support system, support systems for each arm, a torso support system, and a leg support system mounted to a frame system to support a patient during surgery. Any one or combination of the support systems is movable relative to the other and to the frame system to facilitate patient repositioning during surgery. Such repositioning may be desirable, for example, to create flexion, extension or rotation of the spine to facilitate access to and surgical treatment of one or more vertebral bodies, disc spaces between vertebral bodies, or other anatomical structures adjacent the spine of the patient. Furthermore, individual support members of any one of the support systems can articulate to conform to the patient anatomy and facilitate repositioning of the particular portion of the patient's body being support thereon while minimizing stress on the patient.
摘要:
A system and method to track and manipulate the bony anatomy of a patient. A plurality of fiducials is placed on the bony anatomy of a patient. The relative spatial relationships of the fiducials are scanned and a signal generated before, during and after a surgical procedure. The patient is manipulated according to predetermined relative spatial relationships to provide a successful clinical outcome. The fiducials may be LED devices capable of optical observation or signal-emitting devices capable of spatial relationships in three dimensions. An expert system allows comparison of the relative spatial relationships to historical, healthcare facility and Internet databases to plan and determine clinical success of a patient procedure.
摘要:
An adiabatic dynamic differential logic circuit is provided for mitigating a differential power analysis (DPA) attack on a secure integrated chip including a plurality of transistors configured to perform each of a plurality of two-input logical output calculations, wherein each of the two-input logical output calculations results in a minimal differential power of the logic circuit. In one embodiment, a high-performance adiabatic dynamic differential logic circuit is provided which is optimized for very high operating frequencies. In another embodiment, a body-biased adiabatic dynamic differential logic circuit is provided which utilizes transistor body biasing to improve the switching time and differential power of the design.