摘要:
A method of augmenting a nucleus pulposus of an intervertebral disc comprises forming a first opening in an annulus of the intervertebral disc and forming a second opening in the annulus of the intervertebral disc. The method further comprises providing a space creation instrument including an expandable spacing device and introducing the spacing device through the first opening and into the nucleus pulposus. The method further comprises introducing a material delivery instrument through the second opening and into the nucleus pulposus and expanding the spacing device to create a space within the nucleus pulposus. The method also comprises injecting a biocompatible material from the material delivery instrument and into the space within the nucleus pulposus.
摘要:
A device includes a sensor configured to determine a condition associated with a nucleus pulposus, a reservoir configured to include a first agent capable of affecting the condition associated with the nucleus pulposus, a control element configured to provide access to the reservoir, and a controller in communication with the sensor and the control element. The controller is configured to manipulate the control element to provide access to the reservoir in response to the condition determined by the sensor.
摘要:
A method is provided for treating a spinal condition. The method includes introducing a biological treatment into an area of a vertebral column, and mechanically unloading the treated area by applying a load-bearing device to the anterior region, the anterior column region, the posterior region, or the spinous process region of the vertebral column.
摘要:
A method for implanting a prosthetic spinal disc nucleus in an intervertebral disc nucleus space includes: (a) providing a disc nucleus implant instrument having a passageway for passing a prosthetic disc nucleus, and a dilator for dilating an opening in a disc annulus; (b) providing a prosthetic disc nucleus having a first configuration and a second configuration, where the first configuration presents a first cross-sectional size and said second configuration presents a second cross-sectional size, with the first cross-sectional size being larger than the second cross-sectional size; (c) making a hole in the annulus of a disc receiving the prosthetic disc nucleus, with the hole having an undilated size that is smaller than the first cross-sectional size of said prosthetic disc nucleus; (d) providing the prosthetic disc nucleus in its second configuration in the passageway of said disc nucleus implant instrument; (e) introducing the dilator of the disc nucleus implant instrument into the hole in the disc annulus while said hole is not fully dilated; (f) causing the dilator to dilate the hole in the disc annulus; (g) passing the prosthetic disc nucleus through the dilator and into the disc nucleus space while the disc annulus is dilated and the prosthetic disc nucleus is in its second configuration; (h) withdrawing the disc nucleus implant instrument and allowing the disc annulus to return to a size smaller that its dilated size; and (i) causing or allowing the prosthetic disc nucleus to assume its first configuration. The disc nucleus implant instrument may also include an activator for causing the dilator to dilate.
摘要:
An intervertebral prosthetic disc is disclosed and can be installed within an intervertebral space between a first vertebra and a second vertebra. The intervertebral prosthetic disc can include a first component that can have a first compliant structure that can be configure to engage the first vertebra. Further, the first compliant structure can at least partially conform to a shape of the first vertebra. The intervertebral prosthetic disc can also include a second component that can be configured to engage the second vertebra.
摘要:
A method is provided for treating a spinal condition. The method includes attaching an anterior system between a pair of vertebrae to reinforce or stabilize an anterior motion segment and extending a posterior motion preservation system between posterior bone segments of the pair of vertebrae to restore or preserve an intervertebral height
摘要:
Embodiments include selectively expandable composite structures useful as spinal arthroplasty devices such as intervertebral disc prostheses. The structures may comprise an outer shell comprised of a non-hydrogel polymer material. The structures also may comprise at least one core positioned within the outer shell. The core may be comprised of a hydrophilic polymer. The core may expand upon hydration, thereby deforming the outer shell. The selectively expandable composite structures may be implanted in a dehydrated form and then expand during re-hydration following implantation.
摘要:
Systems for spinal stabilization and fixation replace, reconstruct or augment the spinal ligamentous and/or bony tissues resected during surgical procedures. The spinal stabilization system includes at least an implant configured to span the intervertebral disc space with at least one of its ends attached to a respective vertebral body by at least one anchor. The system has a low profile conformable to the spinal anatomy.
摘要:
An osteogenic implant includes a degradation agent in solid form and an osteogenerative agent in solid form. The osteogenic implant is configured to release the degradation agent prior to releasing the osteogenerative agent.
摘要:
Embodiments provide composite components for use in spinal fixation systems. The composite components may comprise polyetheretherketone (PEEK) or another non-resorbable or resorbable polymeric material and at least one metal. Incorporation of PEEK or another non-resorbable or resorbable polymeric material into the components allows average or mean physical properties (e.g., tensile strength, modulus of elasticity, etc.) of the components to be modulated. The composition and orientation of the composite components can be advantageously chosen to produce components with desired physical characteristics.