A mechatronic drilling tool for ear surgery: A case study of some design characteristics

Autor: L. Reyes, D.A. Baker, PN Brett, M.V. Griffiths
Rok vydání: 1996
Předmět:
Zdroj: Mechatronics. 6:461-477
ISSN: 0957-4158
DOI: 10.1016/0957-4158(96)00006-2
Popis: An automatically controlled tool is described for the precise drilling of flexible bone tissues during ear surgery. The micro-drill is able to drill through bone tissue to a surface whose position is unknown. By characterising the tissue from real time drilling data, it is able to stop the drilling as breakthrough starts or to control the drilling to complete the breakthrough with minimum drill bit protrusion by accounting for tissue deflections. Although it is a procedure specific tool, the technique it uses is a generic method of controlling penetration through flexible bone tissues. An aim of the micro-drill is to enhance the skills of the surgeon by utilising sensing and actuation beyond human capabilities. Aspects of the tool design are examined. Some design features result from requirements of the procedure and the human anatomy; others result from the functioning of the tool and the processes used. The overall tool design and operation is reviewed and the requirement for a tool support is considered. A model is used to examine the influence of drill bit shape on the drilling data and its suitability for control purposes. The model is also used to select a feed strategy for the drilling process. It can be seen that these design details are some of the key elements for the effective functioning of the tool.
Databáze: OpenAIRE