FIELD: medicine.
SUBSTANCE: present invention relates to medicine. Surgical stabilising plate comprises a plate portion for stabilising a human or animal spine by being placed ventrally of the spinal column and being affixed to two or more different vertebral bodies. Plate portion comprises proximal and distal sides. Distal side can be placed opposite the vertebral bodies. Plate portion comprises a group of plate openings, which can be accessed the proximal side. There is a fastening portion for each plate opening. Said fastening portion is rigidly connected to the plate portion; it reaches the plate opening to the distal side at an angle to plate opening; it can be affixed in one of the vertebral bodies; it comprises an sheath element with a longitudinal opening that is accessible from the proximal side, and which opens into the plate opening and comprises at least one opening which reaches from the longitudinal opening to the outside. Plate opening forms the inlet part of the longitudinal opening. Plate portion is sized to allow its placement opposite the front or lateral side of the spinal cord. At least one fastening portion opens into the first of the vertebral bodies and at least another fastening portion passes into the second of the vertebral bodies. Additionally the stabilising plate comprises a thermoplastic element for each of the fastening portion; the thermoplastic element is inserted or can be inserted into the longitudinal opening and can be liquefied by energy. Said opening is located so that the liquefied thermoplastic material can be squeezed through the opening onto the bone tissue of the vertebral body where it is necessary to affix the fastening portion. At least one fastening portion contains a stabilising element capable of absorbing mechanical loads acting on the stabilising plate. Plate portion is not flat. Installation method of the surgical stabilising plate comprises the following stages: placing the stabilising plate so that the fastening portion enters into the bone tissue of the vertebral bodies; introducing the thermoplastic element into the longitudinal opening of one of fixing components of the fastening portion; creating mechanical vibration to affect the thermoplastic element by such mechanical energy during a period of time sufficient at least the distal portion of the thermoplastic element being liquified, and simultaneously creating pressure on the thermoplastic element in a distal direction the to extrude the liquified material in the distal direction for extrusion of liquefied material from the opening onto the surrounding tissues so that the liquefied material affixed the bone tissue.
EFFECT: inventions provide resistance to loads and long-term stability of the screw-bone connection, especially for reduced bone tissue, for example, damaged by osteoporosis or osteopenia.
22 cl, 10 dwg
