Patent RU-2535513-C2 (RU)
Inventor: MAJER Jerg
IPC: A61B17/56
Filed: 2009-10-20
Granted: 2014-12-10
Abstract: FIELD: medicine. 
     SUBSTANCE: group of inventions relates to medicine. A knitting device for knitting a human or an animal joint contains at least one anchor part and at least one support part and additionally contains two rod-like anchor parts and one support part. In its general depth (D), measured from a proximal surface to a distal end of the knitting device, the knitting device is oriented parallel to the direction (I) of implantation, and in its general width (W) and the thickness profile (T1 and T2) the knitting device is oriented perpendicular to the direction (I) of implantation. The anchor part and the support part are alternating or are made with a possibility of alternation along the width (W), with the thickness (T1) of the said at least one anchor part being larger than the thickness (T2) of the said at least one support part. The said at least one anchor part contains a material which is liquidised, with the material, which is liquidised, representing a thermoplastic material and being located on the surface of the anchor part or inside a perforated envelope, forming a part of the anchor part. The said surface of the anchor part or the said perforated envelope is placed on the knitting device in such a way that they are capable of coming in contact with the bone tissue in the process of implantation. The support part is placed between the anchor parts, and the anchor part has a depth which is larger than the depth of the support part. The support part, if possible together with the anchor part, forms a concave profile of the device and in this way limits an osteoconduction area. The method of knitting the human or animal joint in accordance with the first version contains the following stages: provision of the availability of the said knitting device, preparation of at least one of joined surfaces and introduction of the knitting device in such a way that the said at least one anchor part comes in contact with the bone tissue in the area of the said at least one prepared surface to be joined. A sage of introduction includes the supply of energy to the proximal surface of the knitting device due to its connection to a vibration or rotation drive or to a source of energy of electromagnetic radiation of visible or infrared range in the process of introduction or after the introduction and switching on a drive or a source for the time sufficient for liquidising of at least part of the material to be liquidised and penetration of the liquidised material into the said bone tissue, where after solidification the liquidised material forms with the said bone tissue a compound with the positive tightness. In accordance with the second version the method contains the following stages: provision of availability of the said knitting device, preparation of at least one of the joined surfaces and introduction of the knitting device in such a way that the said at least one anchor part comes in contact with the bone tissue in the area of the said at least one prepared surface to be joined. In accordance with the third version the method contains the following stages: provision of availability of the said knitting device, fixation of the joined surfaces in a preliminarily specified mutual position, introduction of the knitting device between the fixed surfaces to be joined and release of fixation of the surface to be joined. A set of instruments for knitting a synovial human or animal joint contains vibroinstrument or a pusher and the said knitting device or a part of the said device, installed or to be installed on th distal end of the vibroinstrument or pusher. 
     EFFECT: inventions provide the joint immobilisation to a degree sufficient for doing without additional fixing elements, optimal osteoconduction between two bones of the joint and preferably optimal osteointegration into the bone tissue with a possibility of application in minimally invasive surgery. 
     21 cl, 20 dwg