A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 5/103 (2006.01) G01N 3/22 (2006.01)
Patent
CA 2633997
Method and device for determining the local mechanical resistance inside of a porous body having a variable density and/or porosity, e.g. a porous bone the method comprising: selecting a site of said porous body destined to receive a fixation element, in particular a screw or a bone implant; drilling a hole into said porous body; and measuring a mechanical parameter of the porous structure surrounding said drilled hole by inserting a suitable tool (1) into said drill hole. The device comprises : A) a tool (1) with a shank (4) designed such that it is insertable into a hole artificially drilled into said body and that is capable of exerting a torsional force on said porous structure surrounding said drilled hole by inserting said shank (4) of the tool (1) into said drill hole; B) a measuring unit (20) determining elastic or destructive properties of said porous body generated by torsion force of said tool in said porous body; C) displaying properties of said porous body determined by said measuring unit (20).
Procédé et dispositif servant à déterminer la résistance mécanique locale à l'intérieur d'un corps poreux ayant une densité et/ou une porosité variables, par exemple d'un os poreux, ledit procédé consistant à : sélectionner un site dudit corps poreux destiné à recevoir un élément de fixation, en particulier une vis ou un implant osseux ; percer un trou dans ledit corps poreux ; et mesurer un paramètre mécanique de la structure poreuse entourant ledit trou percé en insérant un outil approprié (1) dans ledit trou percé. Le dispositif comprend : A) un outil (1) ayant une tige (4) conçue de façon à pouvoir l'insérer dans un trou percé artificiellement dans ledit corps et qui peut exercer une force de torsion sur ladite structure poreuse entourant ledit trou percé en insérant ladite tige (4) de l'outil (1) dans ledit trou percé ; B) une unité de mesure (20) déterminant les propriétés élastiques ou de rupture dudit corps poreux générées par la force de torsion dudit outil dans ledit corps poreux ; C) des moyens d'affichage des propriétés dudit corps poreux déterminées par ladite unité de mesure (20).
Haenni Markus
Schwyn Ronald
Suhm Norbert
Ao Technology Ag
Marks & Clerk
LandOfFree
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