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Recovery of laryngeal function by paralyzed vocal folds reanimation.

Research Project

Project/Area Number 26462592
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Otorhinolaryngology
Research InstitutionAsahikawa Medical College

Principal Investigator

KATADA AKIHIRO  旭川医科大学, 医学部, 准教授 (90281899)

Co-Investigator(Kenkyū-buntansha) 野村 研一郎  旭川医科大学, 医学部, 助教 (00466484)
Research Collaborator SUGAWARA Masashi  株式会社 植松電機
Project Period (FY) 2014-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords機能的電気刺激 / 一側性声帯麻痺 / 声門閉鎖運動 / 音声改善 / 埋め込み型電極 / 埋め込み型刺激発生装置 / 神経再支配
Outline of Final Research Achievements

The purpose of this study is clinical application of functional electrical stimulation (FES) to restore laryngeal motor function of the patients with vocal fold paralysis. We designed new implantable electrode and stimulator to reanimate paralyzed laryngeal adductor muscles. The stimulator was activated through the skin. Stimulus parameters were modulated using an application on the tablet through the skin. We used canines with unilateral laryngeal paralysis as animal models. We induced laryngeal adduction by FES to the paralyzed laryngeal adductor muscles. The degree and duration of induced adduction would be enough to improve the voice sounds impaired by unilateral laryngeal paralysis.

Academic Significance and Societal Importance of the Research Achievements

現在の声帯麻痺に対する外科治療は、固定した声帯の位置を移動させて機能の改善を期待するものである。一側性声帯麻痺による音声障害に対しては、外転位にある声帯を正中に移動させて固定する手術が主流であり良好な治療成績をあげている。しかし、この治療は声帯の運動を回復させている訳でははない。
機能的電気刺激(FES)は、微小な電気刺激を用いて障害された生体機能を回復させる新しい治療法である。我々はこのFESを用いて麻痺している喉頭に声帯内転運動を誘発し、持続的に正中位を保持せることに成功した。我々はFESが麻痺している声帯に声帯運動そのものを回復させることができる新しい治療法になると考えている。

Report

(6 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • 2014 Research-status Report
  • Research Products

    (9 results)

All 2019 2017 2016 2014

All Journal Article (1 results) Presentation (7 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] 特集“神経をどう扱うか” 再生・再建の工夫 埋込型電気刺激装置による喉頭ペーシング.2014

    • Author(s)
      片田彰博
    • Journal Title

      JOHNS

      Volume: 30 Pages: 1493-1496

    • Related Report
      2014 Research-status Report
  • [Presentation] 機能的電気刺激による声帯の再運動化2019

    • Author(s)
      片田彰博
    • Organizer
      日本喉頭科学会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 機能的電気刺激による声門閉鎖運動の誘発2017

    • Author(s)
      片田彰博、野村研一郎、原渕保明
    • Organizer
      第62回日本音声言語医学会
    • Related Report
      2017 Research-status Report
  • [Presentation] Electrical stimulation induces vocal fold adduction in case of unilateral laryngeal paralysis.2016

    • Author(s)
      Akihiro Katada, Ken-ichiro Nomura, and Yasuaki Harabuchi
    • Organizer
      10th East Asian Conference on Phonosurgery
    • Place of Presentation
      Kumamoto, Japan
    • Year and Date
      2016-03-04
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] 埋め込み型刺激装置を用いた機能的電気刺激による声門閉鎖運動の誘発.2016

    • Author(s)
      野村研一郎, 片田彰博, 原渕保明
    • Organizer
      第5回耳鼻咽喉科フロンティアカンファレンス
    • Place of Presentation
      福井市
    • Related Report
      2016 Research-status Report
  • [Presentation] 機能的電気刺激による声帯運動誘発のための電極および刺激発生装置の工夫2014

    • Author(s)
      片田彰博, 野村研一郎, 原渕保明
    • Organizer
      第66回日本気管食道科学会
    • Place of Presentation
      高知市
    • Year and Date
      2014-11-13 – 2014-11-14
    • Related Report
      2014 Research-status Report
  • [Presentation] Electrical stimulation induces adduction of immobilized vocal fold with unilaterally paralyzed larynx.2014

    • Author(s)
      Katada A, Nomura K, Kunibe I, Harabuchi Y.
    • Organizer
      The 18th Joint meeting of the World Association fot Bronchology and Interventional Pulmonology & The International Bronchoesophagology Society (18th WCBIP/WCBE)
    • Place of Presentation
      Kyoto, Japan
    • Year and Date
      2014-04-13 – 2014-04-16
    • Related Report
      2014 Research-status Report
  • [Presentation] Electrical stimulation with an implanted device for vocal fold adduction in unilateral paralyzed larynx.2014

    • Author(s)
      Nomura K, Katada A, Kunibe I, Harabuchi Y.
    • Organizer
      The 18th Joint meeting of the World Association fot Bronchology and Interventional Pulmonology & The International Bronchoesophagology Society (18th WCBIP/WCBE)
    • Place of Presentation
      Kyoto, Japan
    • Year and Date
      2014-04-13 – 2014-04-16
    • Related Report
      2014 Research-status Report
  • [Patent(Industrial Property Rights)] 埋め込み型喉頭電気刺激装置およびその評価法2017

    • Inventor(s)
      片田彰博、原渕保明、菅原正視、清尾陽平
    • Industrial Property Rights Holder
      旭川医科大学
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2017-071440
    • Filing Date
      2017-03-31
    • Related Report
      2016 Research-status Report

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Published: 2014-04-04   Modified: 2020-03-30  

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