Needle stylet with integrated optical fibers for spectroscopic contrast during peripheral nerve blocks
Autor: | Stefan Roggeveen, Benno H. W. Hendriks, Marjolein Van Der Voort, Walter Bierhoff, Björn Holmström, Marcus Brynolf, Gerald W. Lucassen, Adrien E. Desjardins |
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Rok vydání: | 2011 |
Předmět: |
Male
Optical fiber Materials science Optical Phenomena media_common.quotation_subject Sus scrofa Biomedical Engineering Pilot Projects Dissection (medical) law.invention Biomaterials Optics law Peripheral nerve medicine Animals Contrast (vision) Brachial Plexus Peripheral Nerves Optical Fibers media_common Principal Component Analysis business.industry Spectrum Analysis Syringes Nerve Block medicine.disease Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Stylet Needle stylet Scattered light business Brachial plexus Algorithms Biomedical engineering |
Zdroj: | Journal of Biomedical Optics. 16:077004 |
ISSN: | 1083-3668 |
DOI: | 10.1117/1.3598852 |
Popis: | The effectiveness of peripheral nerve blocks is highly dependent on the accuracy at which the needle tip is navigated to the target injection site. Even when electrical stimulation is utilized in combination with ultrasound guidance, determining the proximity of the needle tip to the target region close to the nerve can be challenging. Optical reflectance spectroscopy could provide additional information about tissues that is complementary to these navigation methods. We demonstrate a novel needle stylet for acquiring spectra from tissue at the tip of a commercial 20-gauge needle. The stylet has integrated optical fibers that deliver broadband light to tissue and receive scattered light. Two spectrometers resolve the light that is received from tissue across the wavelength range of 500-1600 nm. In our pilot study, measurements are acquired from a postmortem dissection of the brachial plexus of a swine. Clear differences are observed between spectra acquired from nerves and those acquired from adjacent tissue structures. We conclude that spectra acquired with the stylet have the potential to increase the accuracy with which peripheral nerve blocks are performed. |
Databáze: | OpenAIRE |
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