Surgical instrument with means to display torque and...

Details Surgical instrument with means to display torque and... Surgical instrument with means to display torque and...

A - Human Necessities

61

B

A61B 17/88 (2006.01) A61B 17/16 (2006.01) A61C 8/00 (2006.01) A61C 1/18 (2006.01)

Patent

CA 2275426

A surgical instrument (12) includes a tool for screwing in a surgical implant or for cutting a thread in human bone tissue with thread tap. Also included is a unit (2) for supplying power and controlling the speed of an electric motor included in the tool, for example a d.c. motor (1). Detection members (7, 8) transmit signals (i1), dependent on the torque of the tool, to display members which comprise a computer unit (9) with screen (10). Displayed on the screen is a curve which shows the torque in relation to the torsional angle position. A curve or curves displayed in this way form(s) the basis for assessing the quality of the implant or of the bone tissue.

L'invention concerne un instrument chirurgical (12) comprenant un outil permettant de visser un implant chirurgical ou de réaliser un filetage dans un tissu osseux humain au moyen d'un taraud. Cet instrument comprend également une unité (2) intégrée à l'outil et destinée à alimenter en courant un moteur électrique, par exemple, un moteur C.C. (1), et à contrôler la vitesse de ce dernier. Des éléments de détection (7,8) transmettent des signaux (i1) qui sont fonction du couple de l'outil, à des éléments d'affichage comprenant une unité informatique (9) équipée d'un écran (10). A l'écran s'affiche une courbe représentant le couple en fonction de l'angle de rotation. Sur la base de cette ou de ces courbe(s), on peut évaluer la qualité de l'implant ou du tissu osseux.

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