Miniature fiber-optic force sensor based on low-coherence Fabry-Pérot interferometry for vitreoretinal microsurgery
| Autor: | Jin U. Kang, Russell H. Taylor, Xingchi He, Xuan Liu, Iulian Iordachita |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Point spread function
Optical fiber Materials science medicine.medical_treatment 02 engineering and technology 01 natural sciences law.invention 010309 optics ocis:(120.3180) Interferometry Optics Optical coherence tomography law 0103 physical sciences medicine ocis:(170.4500) Optical coherence tomography ocis:(280.4788) Optical sensing and sensors medicine.diagnostic_test business.industry ocis:(120.5050) Phase measurement ocis:(050.2230) Fabry-Perot Microsurgery 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics Interferometry Fiber optic sensor Ophthalmology Applications 0210 nano-technology business Fabry–Pérot interferometer Biotechnology Coherence (physics) |
| Zdroj: | Biomedical Optics Express |
| ISSN: | 2156-7085 |
| Popis: | During vitreoretinal surgery, the surgeon manipulates retinal tissue with tool-to-tissue interaction forces below the human sensory threshold. A force sensor (FS) integrated with conventional surgical tools may significantly improve the surgery outcome by providing tactile feedback to the surgeon. We designed and built a surgical tool integrated with a miniature FS with an outer diameter smaller than 1 mm for vitreoretinal surgery based on low-coherence Fabry–Perot (FP) interferometry. The force sensing elements are located at the tool tip which is in direct contact with tissue during surgery and the FP cavity length is interrogated by a fiber-optic common-path phase-sensitive optical coherence tomography (OCT) system. We have calibrated the FS's response to axial and lateral forces and conducted experiments to verify that our FS can simultaneously measure both axial and lateral force components. |
| Databáze: | OpenAIRE |
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