This study reports on the effects of insertion velocity, needle tip geometry and needle diameter on tissue deformation and maximum insertion force. Moreover, the effect of multiple insertions with the same needle on the maximum insertion force is reported. The tissue deformation and maximum insertion force strongly depend on the insertion velocity and the tip geometry. No correlation was found between the outer diameter and the maximum insertion force for small needles (30G – 32G). The endurance experiments showed no remarkable difference in the maximum insertion force during 100 insertions.
This research received funding from the Dutch Cancer Society (Project 106467 - Optimizing surgical results for oral squamous cell carcinoma by intra-operative assessment of resection margins using Raman spectroscopy) and Eurostars E (Project 12076 – RA-SURE).
© 2021 The Authors. Published by Elsevier Ltd on behalf of IPEM.