Intervertebral implant
First Claim
1. An intervertebral implant (1), specifically an artificial intervertebral disk, comprising a central axis (2), an upper section (10), suitable for laying onto the base plate of a vertebral body lying above and a lower section (20) suitable for laying onto the cover plate of a vertebral body lying below, wherein A) the upper section (10) is 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);
- B) the lower section (20) is 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);
wherein C) the two sections (10;
20) moveable in relation to each other by means of two joints (38;
39) arranged between the two sections (10;
20), D) each of the joints (38;
39) is provided with a swivel axle (3;
4) and the two swivel axles (3;
4) are arranged perpendicular to each other;
E) the two joints (38;
39) are realised by means of an upper joint element (31) connected with the upper section (10), a central joint element (32) and a joint element (33) connected with the lower section (20);
F) one of the external joint sections (31;
33) comprises at least one concave sliding surface (58) rotation-symmetrical with regard to a swivel axle (3;
4); and
G) the central joint section (32) comprises at least one convex sliding surface (57) complementary to this concave sliding surface (58), wherein H) the other of the external joint sections (31;
33) comprises at least one convex sliding surface (55) rotation-symmetrical with regard to the other swivel axle (3;
4); and
I) the central joint section (32) comprises at least one concave sliding surface (56) complementary to this convex sliding surface (55) K) the sliding surfaces (55;
56;
57;
58) are configured as partial surface areas of circular cylindrical or circular conical surface areas; and
L) the swivel axes (3;
4) are arranged skewed to each other.
3 Assignments
0 Petitions
Accused Products
Abstract
An intervertebral implant (1), having 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); and 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), the two joints (38;39) are realised by an upper joint section (31) connected to the upper section (10), a central joint section (32) and a joint section (33) connected with the lower section (20). One of the external joint sections (31;33) comprises at least one concave sliding surface (58) rotation-symmetrical with regard to a swivel axle (3;4); and the other of the external joint sections (31;33) comprises at least one convex sliding surface (55) rotation-symmetrical with regard to the other swivel axle (3;4).
224 Citations
20 Claims
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1. An intervertebral implant (1), specifically an artificial intervertebral disk, comprising a central axis (2), an upper section (10), suitable for laying onto the base plate of a vertebral body lying above and a lower section (20) suitable for laying onto the cover plate of a vertebral body lying below, wherein
A) the upper section (10) is 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); -
B) the lower section (20) is 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);
whereinC) the two sections (10;
20) moveable in relation to each other by means of two joints (38;
39) arranged between the two sections (10;
20),D) each of the joints (38;
39) is provided with a swivel axle (3;
4) and the two swivel axles (3;
4) are arranged perpendicular to each other;
E) the two joints (38;
39) are realised by means of an upper joint element (31) connected with the upper section (10), a central joint element (32) and a joint element (33) connected with the lower section (20);
F) one of the external joint sections (31;
33) comprises at least one concave sliding surface (58) rotation-symmetrical with regard to a swivel axle (3;
4); and
G) the central joint section (32) comprises at least one convex sliding surface (57) complementary to this concave sliding surface (58), wherein H) the other of the external joint sections (31;
33) comprises at least one convex sliding surface (55) rotation-symmetrical with regard to the other swivel axle (3;
4); and
I) the central joint section (32) comprises at least one concave sliding surface (56) complementary to this convex sliding surface (55) K) the sliding surfaces (55;
56;
57;
58) are configured as partial surface areas of circular cylindrical or circular conical surface areas; and
L) the swivel axes (3;
4) are arranged skewed to each other. - View Dependent Claims (2, 3, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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4-6. -6. (canceled)
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19. A process for the replacement of a defect, natural intervertebral disk characterised by an intervertebral implant, comprising the steps:
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A) blocking of the joint(s) (38;
39) of an intervertebral implant (1) through the special means (40) in a certain position of the joint(s) (38;
39);
B) insertion of the intervertebral implant (1) into the intervertebral space to be treated; and
C) release and removal of the device (40) inserted into the intervertebral implant (1) for blocking the joint(s) (38;
39). - View Dependent Claims (20)
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Specification