{"id":{"repo_id":"texas","oai_identifier":"oai:repositories.lib.utexas.edu:2152/84827"},"canonical_url":"https://search.dev.ndltd.org/etd/texas/oai:repositories.lib.utexas.edu:2152/84827","repository":{"repo_id":"texas","name":"University of Texas","base_url":"https://repositories.lib.utexas.edu/server/oai/request"},"display":{"title":"A novel surgical tool for stimulation paddle delivery to the dorsal root ganglion of the spine","abstract":"Dorsal root ganglion (DRG) stimulation is a novel method of treating chronic pain in which a lead with a set of electrodes is placed on the nerve root of the spinal cord above the pain site. This method shows promise over traditional spinal cord stimulation due to the its localized nature as opposed to stimulating the entire dorsal column. Paddle stimulators have been shown to have more targeted therapy, are more energy efficient, and be more versatile by having a larger number of electrode contacts than traditional cylindrical leads. The major challenge with delivering a paddle electrode is accessing the DRG without damaging the root. This project seeks to create a novel surgical tool to assist in delivering a stimulating paddle into the intervertebral foramen via a stylet-retractor mechanism. The tool has a footprint 50% smaller than the available space through which to traverse to access the DRG and can overcome the estimated 1.7 lb force of the surrounding ligaments. The device obtained positive feedback during cadaver labs with orthopedic surgeons and could be manufactured in the future as a viable product.","abstract_html":"Dorsal root ganglion (DRG) stimulation is a novel method of treating chronic pain in which a lead with a set of electrodes is placed on the nerve root of the spinal cord above the pain site. This method shows promise over traditional spinal cord stimulation due to the its localized nature as opposed to stimulating the entire dorsal column. Paddle stimulators have been shown to have more targeted therapy, are more energy efficient, and be more versatile by having a larger number of electrode contacts than traditional cylindrical leads. The major challenge with delivering a paddle electrode is accessing the DRG without damaging the root. This project seeks to create a novel surgical tool to assist in delivering a stimulating paddle into the intervertebral foramen via a stylet-retractor mechanism. The tool has a footprint 50% smaller than the available space through which to traverse to access the DRG and can overcome the estimated 1.7 lb force of the surrounding ligaments. The device obtained positive feedback during cadaver labs with orthopedic surgeons and could be manufactured in the future as a viable product.","abstract_has_math":false,"creators":["Varughese, Tiffany Rachel"],"institution":"The University of Texas at Austin","degree_name":"Master of Science in Engineering","degree_level":"Masters","degree_discipline":"Mechanical Engineering","degree_department":null,"school":null,"contributors":[],"advisors":["Cullinan, Michael (Professor of mechanical engineering)"],"committee_chairs":[],"committee_members":[],"year":2018,"date_issued":"2018-05-07","date_published":"2018-05-07","updated_at":"2026-07-24T05:01:10Z","subjects":["Dorsal root ganglion"],"languages":["en"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://dx.doi.org/10.26153/tsw/11798"],"render_values":[{"text":"http://dx.doi.org/10.26153/tsw/11798","href":"http://dx.doi.org/10.26153/tsw/11798","code":true}]}]},"links":{"outbound_url":"https://hdl.handle.net/2152/84827","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Cullinan, Michael (Professor of mechanical engineering)"]},{"key":"dc:creator","label":"Author","values":["Varughese, Tiffany Rachel"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2021-03-01T23:42:19Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2021-03-01T23:42:19Z"]},{"key":"dc:date.issued","label":"Date","values":["2018-05-07"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Mechanical Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science in Engineering"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["The University of Texas at Austin"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Dorsal root ganglion"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://hdl.handle.net/2152/84827","http://dx.doi.org/10.26153/tsw/11798"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Dorsal root ganglion (DRG) stimulation is a novel method of treating chronic pain in which a lead with a set of electrodes is placed on the nerve root of the spinal cord above the pain site. 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