摘要:
A bone screw (1) is used for locking an articular facet between the superior and inferior articular processes of two vertebral bodies and is provided with a threaded shaft (2), a screw head (3) and a central axis (4). The screw head (3) is further provided with a number of grooves (5) on the periphery of the screw head (3) which run essentially parallel to said central axis (4).
摘要:
An implant for an intervertebral space with a shaped body. The implant makes possible rotation of the implant about the longitudinal axis of the body in one direction and prevents such rotation in the opposite direction.
摘要:
A method for augmenting a facet joint. The method includes exposing the posterior aspects of a spinal motion segment in a first incision, preparing an access path through a separate postero-lateral percutaneous incision using a drilling instrument that traverses through at least a portion of the lamina and an inferior facet articulation surface, and terminates within the facet joint gap, and injecting augmentation filler into the facet joint gap.
摘要:
An intervertebral implant (1) including an upper section (10) provided with a ventral side area (11), a dorsal side area (12), two lateral side areas (13, 14), a top apposition surface (15) and a bottom surface (16), a lower section (20) provided with a ventral side area (21), a dorsal side area (22), two lateral side areas (23,24), a bottom apposition surface (25) and a top surface (26). The two sections (10,20) are moveable in relation to each other by means of two joints (38;39) arranged between the two sections (10;20), wherein each of the joints (38;39) has a swivel axis (3;4) and the two swivel axes (3;4) are arranged perpendicular to each other, and each joint (38;39) comprises a first joint section (31;32;33) with an elevation (49;50) provided with an edge (51;53) for the bearing of a second joint section (31;32;33) in a way that allows titling around the swivel axis (3;4).
摘要:
A flexible element that may be configured, among various uses, as an intervertebral implant for insertion into an intervertebral disc space between adjacent vertebral bodies or between two bone portions. The flexible element includes one or more struts extending from superior and inferior endplates and bending towards one another for connection with one or more internal beams.
摘要:
A bone screw (1) is used for locking an articular facet between the superior and inferior articular processes of two vertebral bodies and is provided with a threaded shaft (2), a screw head (3) and a central axis (4). The screw head (3) is further provided with a number of grooves (5) on the periphery of the screw head (3) which run essentially parallel to said central axis (4).
摘要:
A flexible element that may be configured, among various uses, as an intervertebral implant for insertion into an intervertebral disc space between adjacent vertebral bodies or between two bone portions. The flexible element includes one or more struts extending from superior and inferior endplates and bending towards one another for connection with one or more internal beams.
摘要:
An intervertebral implant including a top part, a bottom part and a joint arranged axially between the top part and the bottom part. The top part includes a top surface suitable to be placed on the base plate of a body of the vertebra adjacent and above the site of removal. The bottom part has a bottom surface suitable to be placed on the cover plate of a body of the vertebra adjacent and below the site of removal. The joint includes a convex joint part with a first articular surface and a joint shell matching it, with a second articular surface mounted in a sliding manner on the first articular surface. The intervertebral implant including a temporarily locking mechanism to fix the two parts relative to one another.
摘要:
A method for total replacement of an affected intervertebral disc through a dorsal approach comprising the steps of removing the disc material of the affected intervertebral disc (3) and inserting an intervertebral prosthesis (30) into the intervertebral disc space via an extraforaminal path (23). An intervertebral prosthesis (100), in particular an intervertebral disk prosthesis comprising A) a first prosthetic component (101) having a first apposition surface (107) disposed transversely to the central axis (103) B) a second prosthetic component (102) having a second apposition surface (108) disposed transversely to the central axis (103); whereby C) said first and second prosthetic components (101;102) are connected by means of an articulation (106); whereby D) when viewed parallel to said central axis (103) said first and second prosthetic components (101;102) have an elongated shape with a major axis (127) and a transverse minor axis (128); E) said central axis (103), major axis (127) and transverse minor axis (128) intersecting each other and said central axis (103) and transverse minor axis (128) defining a middle plane (126); F) said first and second prosthetic component (101;102) have a cross-sectional area orthogonal to said central axis (103) which is essentially oval or elliptical; whereby G) said cross-sectional area comprises at least two concavities (125;130) lying on different sides of said middle plane (126) and on the same side of said major axis (127).
摘要:
An intervertebral implant (1), including an upper section (10) provided with a ventral side area (11), a dorsal side area (12), two lateral side areas (13, 14), a top apposition surface (15) and a bottom surface (16) a lower section (20) provided with a ventral side area (21), a dorsal side area (22), two lateral side areas (23,24), a bottom apposition surface (25) and a top surface (26). The two sections (10,20) are moveable in relation to each other by means of two joints (38;39) arranged between the two sections (10;20), wherein each of the joints (38;39) has a swivel axle (3;4) and the two swivel axles (3;4) are arranged perpendicular to each other, and each joint (38;39) comprises a first joint section (31;32;33) with an elevation (49;50) provided with an edge (51 ;53) for the bearing of a second joint section (31;32;33) in a way that allows titling around the swivel axle (3;4).