Metrological Support of Medical Drillings at the Lateral Skull Base

Anna-Lena Knott,Julia Kristin,Tom Prinzen,Robert H Schmitt,Jörg Schipper,Thomas Klenzner

doi:10.1515/cdbme-2021-1037

Abstract

Abstract For minimally invasive drilling processes, the temperature development in the drilling ground is of crucial importance for patient safety. To monitor the temperature during drilling, a drill prototype was developed by BREDEMANN ET AL. which can record the drill temperature in parallel to the process and in real time. The measurement principle of the thermistor (temperature sensor) integrated in the drill could be validated. [1] The prototype must be refined for use in the operating room, as the drill does not yet meet all the medical requirements that need to be fulfilled. In further development, the recorded temperature data in particular must be processed and communicated to the surgeon in order to provide added value for the surgical procedure.

Highlights

In head and neck surgery, as in many other medical fields, there is a desire for minimally invasive surgical processes to minimize trauma to the patient
In preliminary work for real-time monitoring of temperature in the drilling ground, BREDEMANN ET AL. as part of the interdisciplinary team of WZL and the Department of Otorhinolaryngology from the University Hospital Düsseldorf cooperating in the DFG funded project Mambo - Metrological safeguarding of a drilling process in image-guided minimally invasive procedures using the example of the otobase, developed a concept for temperature monitoring during drilling using the IDENT method [7]
Since the highest temperatures are expected at the drill bit tip, the integration of a temperature sensor into the tip of a drill bit was aimed at

Summary

State of the Art

In head and neck surgery, as in many other medical fields, there is a desire for minimally invasive surgical processes to minimize trauma to the patient. In preliminary work for real-time monitoring of temperature in the drilling ground, BREDEMANN ET AL. As part of the interdisciplinary team of WZL and the Department of Otorhinolaryngology from the University Hospital Düsseldorf cooperating in the DFG funded project Mambo - Metrological safeguarding of a drilling process in image-guided minimally invasive procedures using the example of the otobase, developed a concept for temperature monitoring during drilling using the IDENT method [7]. Since the highest temperatures are expected at the drill bit tip, the integration of a temperature sensor into the tip of a drill bit was aimed at. Industrial drill (⌀ 5 mm) with thermistor risk model for real-time determination of the patient's risk of Figure 2: Evaluation of drilling experiment with temperature measurement [1]. In addition to temperature data, the model incorporates the mechanical risk of a direct hit and imaging uncertainty

Development Needs

Findings

Discussion

Conclusion and Outlook