JP2004526506A5 - - Google Patents

Claims (14)

For inserting at least a portion for implantation in the gap which is formed over the entire height to be prepared by the surgery intervertebral space between adjacent vertebral bodies of a human spine, a spinal implant between vertebral bodies, vertebral Has a front surface and a rear surface and a depth between them,
An anterior end for initial insertion into the intervertebral space and a posterior end opposite the anterior end, wherein the implant has a length between the anterior end and the posterior end When,
Disposed at least partially within the intervertebral space and over the entire height to oppose and support adjacent vertebral bodies between the front and back ends Opposing upper and lower portions that are non-arc-shaped along at least a portion of the length of the implant;
Opposing side surfaces between the upper and lower portions and between the front end portion and the rear end portion, defining a width of the implant, at least a portion of at least one of the opposing side surfaces being the length of the implant Linearly along at least a portion of the length, and the front end portion is configured in a substantially semicircular shape from one of the opposing side surfaces to the other of the opposing side surfaces, the circle being substantially equal to the width of the implant With opposing sides having a diameter,
Made of a material suitable for implantation into a human, wherein the upper and lower portions of the implant are in communication with each other to form at least a portion of a passage adapted to receive a bone growth promoting material An implant comprising an opening through which bone can grow from vertebral body to vertebral body. For inserting at least a portion for implantation in the gap which is formed over the entire height to be prepared by the surgery intervertebral space between adjacent vertebral bodies of a human spine, a spinal implant between vertebral bodies, vertebral Has a front surface and a rear surface and a depth between them,
An anterior end for initial insertion into the intervertebral space and a posterior end opposite the anterior end, wherein the implant has a length between the anterior end and the posterior end When,
Disposed at least partially within the intervertebral space and over the entire height to oppose and support adjacent vertebral bodies between the front and back ends With opposing upper and lower portions made of
Having a maximum width greater than one half of the width of an adjacent vertebral body adapted to insert the implant, wherein the front end is approximately a semicircle of a first circle along the width of the implant. The rear end has a radius of curvature of a second circle along the width of the implant, the second circle has a radius greater than the radius of the first circle, and
Made of a material suitable for implantation into a human, wherein the upper and lower portions of the implant are in communication with each other to form at least a portion of a passage adapted to receive a bone growth promoting material An implant comprising an opening through which bone can grow from vertebral body to vertebral body. The implant according to claim 2 , wherein the front end and the rear end of the implant intersect at opposite points of the implant. 6. The implant according to any one of the preceding claims , wherein the implant has a maximum width between the opposing lateral surfaces that is greater than one half of the width of an adjacent vertebral body adapted to insert the implant. The described implant. 4. The implant according to any one of claims 1 to 3 , wherein the implant has a maximum width between the opposing lateral surfaces that is less than one half of the width of an adjacent vertebral body adapted to insert the implant. The implant according to Item . The implant according to any one of the preceding claims , wherein the passage intersects at least one of the opposing side surfaces. In order to engage with adjacent vertebral bodies, it further comprises a bone engaging surface formed on at least the upper and lower outer surfaces, the bone engaging surface being a protrusion, a nail, a nail-like protrusion, a spline, a surface eye The implant of any one of the preceding claims , comprising at least one of vandalization and knurling. Implant according to any one of the preceding claims , in combination with a bone growth promoting material. The bone growth promoting material is selected from one of bone, bone-derived product, demineralized bone matrix, mineralized protein, ossified protein, bone morphogenic protein, hydroxyapatite, and bone production coding gene; The implant according to claim 8 . Implant according to any one of the preceding claims , wherein at least part of the implant is resorbable. Implant according to any one of the preceding claims, in combination with at least one of a chemical or antimicrobial material adapted to inhibit scar formation. The implant is made from bone annulus obtained from major long bone of a human having a medullary canal, in order to form at least a portion of the passageway, including at least a portion of the medullary canal passing through the upper and lower An implant according to any one of the preceding claims. 12. Implant according to any one of the preceding claims, wherein the implant is made from a bone composite material. The implant according to any one of claims 1 to 11, wherein the implant is made of a material other than bone.