2013 World Haptics Conference (WHC) 2013
DOI: 10.1109/whc.2013.6548393
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Mr-compatible biopsy needle with enhanced tip force sensing

Abstract: We describe an instrumented biopsy needle that provides physicians the capability to sense interaction forces directly at the tip of the needle’s inner stylet. The sensors consist of optical fiber Bragg gratings (FBGs), and are unaffected by electromagnetic fields; hence the needle is suitable for MR-guided procedures. In comparison to previous instrumented needles that measure bending strains, the new design has additional sensors and a series of micro-machined holes at the tip. The holes increase strain sens… Show more

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Cited by 31 publications
(15 citation statements)
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“…In addition to measuring chordae tendineae forces, the versatility of FBGs could easily allow for measurements of more complex structures within the heart and body. Novel applications using FBGs include providing haptic feedback of needles, catheters, and robotic arms allowing for enhanced surgical manipulation as well as for diagnostics in the case of force-sensing needles for tumor biopsy [36][37][38]. We are currently experimenting with force and shape-sensing annuloplasty rings using multicore and bundled fibers oriented at 120 deg angles.…”
Section: Discussionmentioning
confidence: 99%
“…In addition to measuring chordae tendineae forces, the versatility of FBGs could easily allow for measurements of more complex structures within the heart and body. Novel applications using FBGs include providing haptic feedback of needles, catheters, and robotic arms allowing for enhanced surgical manipulation as well as for diagnostics in the case of force-sensing needles for tumor biopsy [36][37][38]. We are currently experimenting with force and shape-sensing annuloplasty rings using multicore and bundled fibers oriented at 120 deg angles.…”
Section: Discussionmentioning
confidence: 99%
“…The needle’s inner stylet has three fibers, 120° apart in the needle cross-section, and slotted features at the tip to improve its sensitivity to axial loading. A description of the fabrication and design of this needle is found in [16]. …”
Section: Methodsmentioning
confidence: 99%
“…We previously described a force-sensing needle with embedded FBG sensors for applications in MRI-guided interventions [16]. Although a large advantage of FBG technology is its immunity to electro-magnetic interference, the sensors can be used for non-MRI interventions as well due to their small size and high resolution.…”
Section: Introductionmentioning
confidence: 99%
“…These methods can be used to address needle buckling outside the patient tissue. To avoid buckling within tissue, several novel needle designs have been proposed to increase the critical buckling force of the needle, or reduce the insertion force on the needle during insertion into tissue [31][32][33][34][35][36]. These methods also rely on needle-tissue biomechanics properties, and thus may not be as effective for real-time avoidance control of buckling events due to uncertainties of the tissue mechanics properties or underlying internal tissue structure.…”
Section: Background and Prior Workmentioning
confidence: 99%