Source: http://www.google.com/patents/US20020143399?dq=5,579,517
Timestamp: 2017-08-22 10:19:29
Document Index: 111785510

Matched Legal Cases: ['art.\n5', 'art.\n9', 'art 3', 'art 4', 'art 5', 'art 2', 'art 3', 'art 5', 'arts 3', 'arts 3']

Patent US20020143399 - Anchorable vertebral implant - Google Patents
A spinal implant for engagement in a space between a pair of adjacent vertebrae has a center part extending along an axis and formed with upper and lower screwthreads of opposite hand. Respective upper and lower end parts axially flank the center part and each have an inner end threaded onto a respective...http://www.google.com/patents/US20020143399?utm_source=gb-gplus-sharePatent US20020143399 - Anchorable vertebral implant
Publication number US20020143399 A1
Application number US 10/112,892
Also published as DE10116412C1, DE50204355D1, EP1247503A2, EP1247503A3, EP1247503B1, US6805714
Publication number 10112892, 112892, US 2002/0143399 A1, US 2002/143399 A1, US 20020143399 A1, US 20020143399A1, US 2002143399 A1, US 2002143399A1, US-A1-20020143399, US-A1-2002143399, US2002/0143399A1, US2002/143399A1, US20020143399 A1, US20020143399A1, US2002143399 A1, US2002143399A1
Inventors John Sutcliffe
Patent Citations (3), Referenced by (117), Classifications (32), Legal Events (6)
US 20020143399 A1
A spinal implant for engagement in a space between a pair of adjacent vertebrae has a center part extending along an axis and formed with upper and lower screwthreads of opposite hand. Respective upper and lower end parts axially flank the center part and each have an inner end threaded onto a respective one of the screwthreads and an outer end adapted to bear on a respective one of the adjacent vertebrae. One of the end parts is formed with an eye having a hole open transversely of the axis. A screw engages through the hole and anchors the one end part to the respective vertebra. Normally in accordance with the invention the other of the end parts is also formed with an eye having a hole open transversely of the axis and another screw engages through the hole of the other end part and anchors the other end part to the respective vertebra.
1. A spinal implant for engagement in a space between a pair of adjacent vertebrae, the implant comprising:
respective upper and lower end parts axially flanking the center part and each having an inner end threaded onto a respective one of the screwthreads and an outer end adapted to bear on a respective one of the adjacent vertebrae, one of the end parts being formed with an eye having a hole open transversely of the axis; and
a screw engaged through the hole and anchoring the one end part to the respective vertebra.
2. The spinal implant defined in claim 1 wherein the other of the end parts is also formed with an eye having a hole open transversely of the axis, the implant further comprising
another screw engaged through the hole of the other end part and anchoring the other end part to the respective vertebra.
3. The spinal implant defined in claim 2 wherein the eye of the other end part is formed as a tab extending generally parallel to the axis.
4. The spinal implant defined in claim 1 wherein the eye is open at an acute angle away from the other part.
5. The spinal implant defined in claim 4 wherein the eye is thickened.
6. The spinal implant defined in claim 4 wherein the eye is open at an angle of between 25° and 65° to the axis.
7. The spinal implant defined in claim 5 wherein the eye is open at an angle of about 45° to the axis.
8. The spinal implant defined in claim 4 wherein the eye is unitarily formed with the one end part.
9. The spinal implant defined in claim 1 wherein the inner ends are formed as axially extending stems and the center part is a sleeve threaded over the stems.
10. The spinal implant defined in claim 9 wherein the stems carry screwthreads of opposite hand.
11. The spinal implant defined in claim 1 wherein the eye is open at an acute angle to the axis.
12. The spinal implant defined in claim 1 wherein the end parts have outer faces formed with teeth engaging the respective vertebrae.
13. The spinal implant defined in claim 1 wherein the parts are formed with radially open throughgoing holes, whereby bone can grow into and through the parts.
14. The spinal implant defined in claim 1 wherein the parts are of titanium.
15. The spinal implant defined in claim 1 wherein the parts are of a biocompatible plastic, ceramic, or bone.
The present invention relates to a vertebral implant.
More particularly this invention concerns such an implant used to replace one or vertebrae and/or intervertebral disk.
The eye according to the invention is unitarily formed with the one end part. In addition the inner ends are formed as axially extending stems and the center part is a sleeve threaded over the stems. In addition the parts are formed with radially open throughgoing holes so that bone can grow into and through the parts. These parts can be made of titanium, a biocompatible plastic, ceramic, or bone. 152
[0016]FIG. 1 is a side view partly in vertical section through the implant according to the invention;
[0017]FIG. 2 is a front view of the bottom part of the implant;
[0018]FIG. 3 is a horizontal section through the implant when installed;
[0019]FIG. 4 is a side view of the installed implant;
[0020]FIG. 5 is a view like FIG. 4 but with the implant installed in the caudal area of the spine; and
[0021]FIG. 6 is a view like FIG. 4 of another implant in accordance with the invention.
As seen in FIGS. 1 and 2 an implant 1 according to the invention for installation between a pair of vertebrae 2 has a lower end part 3, and upper end part 4, and a center sleeve or part 5, all made of a biologically inert or absorbable material such as steel, titanium, bone, bioceramic, or polyetherether-ketone (PEEK). The upper part 2 has a downwardly extending externally threaded tubular stem 18 and the lower part 3 has an upwardly extending externally threaded tubular stem 15. The screwthreads of the stems 15 and 18 are of opposite hand and mate with complementary screwthreads in the sleeve part 5 so that rotation in one direction relative to a center axis A will spread the parts 3 and 4 vertically and distract the vertebrae 2 and opposite rotation will move them together. The upper and lower surfaces of the parts 3 and 4 can be parallel toe each other but are normally inclined at a slight acute angle to each other, making the implant 1 wedge shaped to correspond to the normal lordosis of the spine.
US8801785 * Nov 2, 2010 Aug 12, 2014 Seaspine, Inc. Articulating spinal implant
US20150196400 * Jan 14, 2014 Jul 16, 2015 Warsaw Orthopedic, Inc. Spinal implant system and method of use
International Classification A61F2/44, A61F2/30, A61B17/86, A61F2/28, A61F2/00, A61B17/56, A61F2/02
Cooperative Classification A61F2310/00359, A61F2/442, A61F2002/30235, A61F2002/30787, A61F2/44, A61F2310/00023, A61F2002/30578, A61F2310/00179, A61F2002/30062, A61F2002/3055, A61B17/86, A61F2230/0069, A61F2310/00017, A61F2/4465, A61F2002/4475, A61F2220/0025, A61F2002/2835, A61F2/28, A61F2310/00353, A61F2002/30411, A61F2210/0004, A61F2002/30841