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Epidural space insertion is a common needle surgery for regional anaesthesia, such as labor pain relief and lower extremity surgery. But detection of needle entry into epidural space can be difficult, which currently is highly depended on a hand-feeling skill named loss-of-resistance (LOR). To provide the clinicians with a better real-time visual signal, this paper presents a novel tip force sensing...
The force feedback absence in minimally invasive surgeries (MIS) is a chronic problem. The main obstacle is the intensive magnetic resonance (MR) influence on traditional electronic signals. This paper proposes a miniature and MR compatible optical force sensor based on Fabry-Perot interference (FPI) principle and interferometric-intensity modulation method. The FPI sensor, with 400µm outer diameter,...
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