IMPLANT FOR IMPLANTING IN BONE TISSUE OR IN BONE TISSUE SUPPLEMENTED WITH BONE SUBSTITUTE MATERIAL

IMPLANT FOR IMPLANTING IN BONE TISSUE OR IN BONE TISSUE SUPPLEMENTED WITH BONE SUBSTITUTE MATERIAL
Patent number: CA2496119
Publication date: 2004-03-04
Inventor: AESCHLIMANN MARCEL (CH); TORRIANI LAURENT (CH); MAYER JORG (CH)
Applicant: WOODWELDING AG (CH)
Classification:
- international: A61C8/00; A61L27/50; A61B17/68
- european:
Application number: CA20032496119 20030815
Priority number(s): WO2003CH00550 20030815
Abstract of CA2496119

The invention relates to an implant for implanting in bone tissue, for example, a dental implant or an implant for an orthopedic application. This implant has surface areas (4) of first type that have, for example, osseointegrative, anti-inflammatory, infection-fighting and/or growth- promoting properties, and have surface areas (8) of a second type that are comprised of a material that can be liquefied by mechanical vibrations. The implant is positioned inside an opening, e.g. of a jaw-bone, is subjected to the action of mechanical vibrations, e.g. ultrasound, and is pressed against the jaw-bone. During this process, the liquefiable material is liquefied and pressed into uneven areas and pores of the surrounding bone tissue where, up on resolidification, it forms a positive connection between the implant and the bone tissue. An appropriate arrangement and dimensioning of the surface area s of the first and second types results in, during implantation, the liquefied material flowing, at most, in a clinically irrelevant amount over the surfac e areas (4) of the first type so that the biologically integrative properties of these surface areas can become effective immediately after implantation. Due to said positive connection, the implant acquires a very good primary stability whereby enabling it to be placed under stress immediately after implantation. This prevents the occurrence of a negative effect as a result of not placing the implant under stress and reduces relative movements between the implant and bone tissue to a physiological extent that is conducive to a desired osseointegration after implantation.