Patent RU-2535775-C2 (RU)
Inventor: MUELLER ANDREA
IPC: A61F2/44
Filed: 2010-02-24
Granted: 2014-12-20
Abstract: FIELD: medicine. 
     SUBSTANCE: according to the first version, a spinal stabilisation device comprises an interbody vertebral insert and a holding fixture. The interbody vertebral insert is supposed to be inserted between the upper vertebral body and the lower vertebral body, and comprises a top surface facing the lower vertebral end plate of the upper vertebra, and a bottom surface facing the upper vertebral end plate of the lower vertebra. The holding fixture comprises a support preventing the interbody vertebral insert from escaping from the space between the upper and lower vertebral bodies towards the holding fixture and supported by a part of the surface of the interbody vertebral insert. The support comprises a number of fastener holes. The holding fixture additionally comprises a number of fasteners. Each fastener comprises a tubular element modelling a cavity open from a proximal side and a hole of the tubular element. The cavity is open in towards the bone. Provided is a binder, which is located in the cavity, or is configured to be introduced into the cavity from the proximal side. Each fastener is configured to be inserted into one of the inlet holes. The binder is provided to be introduced in the liquid state at least partially through the above hole of the tubular element into the bone tissue of either the upper vertebral body, or the lower vertebral body; that is followed by the infiltration of the bone tissue and hardening, providing the attachment of the tubular element to the vertebral body. According to the second version, the spinal stabilisation device comprises the interbody vertebral insert and an anchor fixture. The interbody vertebral insert is inserted between the upper vertebral body and the lower vertebral body and comprises the top surface facing the lower vertebral end plate of the upper vertebral body and the bottom surface facing the upper vertebral end plate of the lower vertebral body, and a groove socket extending in the top surface to the front end and the groove socket extending in the bottom surface to the front end. In the area of the above groove sockets, the interbody vertebral insert is provided with a structural element to form a strength joint together with the hardened liquid material having filled the above structural element. The anchor fixture is provided for each groove socket. The above anchor fixtures comprise a proximal end, a distal end and the first attachment section, the second attachment section and a bridge between the first and second attachment sections. The first and second attachment sections project distally behind the bridge and comprise a dissolved material thereby making it possible to anchor the first attachment section in the bone tissue and to anchor the second attachment section in the above structural elements by dissolving the dissolved material leading to the penetration of the above material into the bone or into these structural elements with the above material to be hardened. A method for the implantation of the spinal stabilisation device into the space between the two vertebral bodies comprising the following stages: presenting the device according to the first embodiment, inserting the interbody vertebral insert into the above space, resting the support of the holding fixture in the anterior, or anterolateral, or lateral, or posterolateral, or posterior end surface of the interbody vertebral insert, and anchoring the holding fixture in the intervertebral body. The stage of anchoring involves sub-stages providing the indention of the diluted boiling material into the spongy bone tissue of an intervertebral body and hardening of the above material so that the above material forms the strength joint with the bone tissue. A kit of components for the implantation of the spinal stabilisation device into the space between the two vertebral bodies comprises the device according to the first or second embodiment, and a fastening tool. 
     EFFECT: inventions provide preventing the damage of important blood vessels passing along the anterior portion of the spine. 
     34 cl, 61 dwg