초록 ▼

Interspinous process implants are disclosed. An Implant is adapted and configured to be placed between adjacent spinous processes. Implant is generally H-shaped or anvil shaped with a saddle portion or central support portion extending laterally along axis between lateral end portions. End portions

Interspinous process implants are disclosed. An Implant is adapted and configured to be placed between adjacent spinous processes. Implant is generally H-shaped or anvil shaped with a saddle portion or central support portion extending laterally along axis between lateral end portions. End portions partially protrude beyond the front and back surfaces of support portion thereby creating a slight indentation along the front and back or anterior and posterior of central portion.

대표청구항 ▼

1. A prosthetic device for implantation between adjacent vertebral bodies in a vertebral column, the prosthetic device comprising: a body comprising a central support portion having top, bottom, front and back surfaces, the central support portion extending laterally along a lateral axis between fir

1. A prosthetic device for implantation between adjacent vertebral bodies in a vertebral column, the prosthetic device comprising: a body comprising a central support portion having top, bottom, front and back surfaces, the central support portion extending laterally along a lateral axis between first and second end portions, the first end portion extending longitudinally along a first longitudinal axis and the second end portion extending longitudinally along a second longitudinal axis, and the first and second longitudinal axes are generally perpendicular to the lateral axis, wherein at least a portion of first and second end portions protrude beyond the top and bottom surfaces of the support portion in the cranial-caudal direction, protrude beyond the front and the back surfaces of the support portion in the anterior-posterior direction to further distract at least a portion of the adjacent vertebral bodies of the vertebral column, and wherein the central support portion has first and second concave portions extending from the first end portion to the second end portion on the upper and lower surfaces for supporting the adjacent vertebral bodies and third and fourth concave portions extending from the first end portion to the second end portion on the front and back surfaces for supporting and centering the adjacent vertebral bodies on the central support portion, wherein the second end portion comprises a plate having a uniform thickness and an opening to engage an insertion tool, the opening extending from the second end portion through the central support portion and the first end portion, wherein the second end portion comprises an anterior cutout to accommodate lamina in an implanted position, and wherein the first and second end portions further comprise multiple grooves extending laterally along a portion of the front and back surface of the first and second end portions for preventing movement in any non-parallel direction with respect to spinous processes. 2. The device of claim 1, wherein the body is made from a polyetheretherketone (PEEK) material. 3. The device of claim 1, wherein the body includes a locating pin, the locating pin made from a radio-opaque material. 4. The device of claim 1, wherein the first end portion is curved adjacent a distal end. 5. The device of claim 1, wherein the support portion is configured and dimensioned to fit between adjacent spinous processes and further comprises: a proximal support surface spaced longitudinally from a distal support surface by a first distance, the support surfaces configured to contact adjacent spinous processes of the vertebral column, wherein the first distance is predetermined for spacing of two adjacent spinous processes when the device is implanted in the vertebral column. 6. The device of claim 1, wherein the support portion has a generally circular cross-section. 7. The device of claim 1, wherein the support portion has a generally rectangular cross-section. 8. The device of claim 1, wherein at least a portion of the end portions extend longitudinally beyond first and second support surfaces in the longitudinal direction. 9. The device of claim 1, wherein the first and second longitudinal axes are coplanar to the lateral axis. 10. The device of claim 1, wherein the end portions are laterally spaced by a second distance, the second distance generally corresponding to a predetermined distance for accommodating the width of the spinous processes. 11. The device of claim 1, wherein the end portions are configured and dimensioned to contact the lateral sides of the spinous process when the device is implanted in the vertebral column. 12. The device of claim 1, wherein at least one of the end portions define at least one opening for accommodating a fastening device to fasten the device to the spinous process when the device is implanted. 13. The device of claim 1, wherein the body is configured and dimensioned to be rotated in-situ to distract adjacent spinous processes. 14. The device of claim 1, wherein the support portion further comprises a ramp portion adjacent at least one end portion to center the adjacent spinous processes along the central portion. 15. A prosthetic device for implantation in a treated area of an intervertebral space between vertebral bodies of a spine, comprising: a spacer body comprising a central support portion extending along a lateral axis between first and second end portions, the central support portion comprising an anterior surface and a posterior surface, wherein the anterior and posterior surfaces each have a contact area capable of engaging with anatomy in the treated area and the anterior and posterior surfaces are spaced apart a first distraction distance in a first direction, the central support portion comprising an inferior surface and a superior surface, wherein the inferior and superior surfaces each have a contact area capable of engaging with anatomy in the treated area and the inferior and superior surfaces are spaced apart a second distraction distance in a second direction, wherein the first distraction distance is less than the second distraction distance, wherein the central support portion is configured and dimensioned to be positioned between adjacent vertebral bodies, wherein when the device is in a first implantation position the adjacent vertebral bodies are maintained substantially separated by at least the first distraction distance and when the device is in a second implantation position the adjacent vertebral bodies are maintained substantially separated by at least the second distraction distance, wherein the central support portion is rotatable from the first implantation position to the second implantation position, wherein in the first implantation position the first and second end portions are located between the adjacent vertebral bodies, extending in an anterior-posterior direction, wherein in the second implantation position the first and second end portions are located laterally adjacent opposite lateral sides of a portion of the vertebral bodies, extending in a cranial-caudal direction, wherein at least a portion of the contact areas of the anterior and posterior surfaces are concave for engaging the adjacent vertebral bodies and at least a portion of the contact areas of the inferior and superior surfaces are concave for engaging the adjacent vertebral bodies, and wherein at least a portion of first and second end portions protrude beyond the superior and inferior surfaces of the central support portion in a cranial-caudal direction and protrude beyond the anterior and the posterior surfaces of the support portion in an anterior-posterior direction to further distract at least a portion of the adjacent vertebral bodies of the vertebral column, wherein the first and second end portions further comprise multiple grooves extending laterally along a portion of the anterior and the posterior surfaces of the first and second end portions for preventing movement in any non-parallel direction with respect to spinous processes, wherein at least one of the first and second end portions comprise an anterior cutout to accommodate a portion of lamina in the second implantation position. 16. The device of claim 15, wherein the first end portion extends longitudinally along a first longitudinal axis and the second end portion extends longitudinally along a second longitudinal axis, and the first and second longitudinal axes are generally perpendicular to the lateral axis. 17. The device of claim 16, wherein the first end portion is tapered along its longitudinal length. 18. The device of claim 15, wherein the support portion further comprises a ramp portion adjacent at least one end portion to center a portion of the adjacent vertebral bodies along the central portion. 19. A prosthetic device for implantation between adjacent spinous processes in a vertebral column, the prosthetic device comprising: a body comprising a central support portion extending laterally along a lateral axis between first and second end portions, the first end portion extending longitudinally along a first longitudinal axis and the second end portion extending longitudinally along a second longitudinal axis, and the first and second longitudinal axes are substantially perpendicular to the lateral axis,wherein at least a portion of first and second end portions protrude beyond a top surface and a bottom surface of the support portion in the cranial-caudal direction and protrude beyond a front surface and a back surface of the support portion in the anterior-posterior direction to further distract at least a portion of the adjacent spinous processes of the vertebral column,wherein the support portion is configured and dimensioned to fit between adjacent spinous processes and further comprises a concave proximal support surface spaced longitudinally from a distal concave support surface by a first distance, the support surfaces configured to contact and support adjacent spinous processes of the vertebral column, wherein the first distance is predetermined for spacing of two adjacent spinous processes when the device is implanted in the vertebral column,wherein the second end portion comprises an anterior cutout to accommodate a portion of the Lamina when the device is implanted in the vertebral column and includes at least one opening to accommodate a fastening device to fasten the device to the spinous process when the device is implanted in the vertebral column, andwherein the first and second end portions further comprise multiple grooves extending laterally along a portion of the front and back surface of the first and second end portions for preventing movement in any non-parallel direction with respect to the spinous processeswherein the central support portion comprises proximal indented regions and distal indented regions, the width of the proximal indented regions being different than the width of the distal indented regions.