| JaLCDOI | 10.18926/15177 |
|---|---|
| Title Alternative | Development of intramuscular probe for local muscle function |
| FullText URL | 016_1_001_008.pdf |
| Author | Oka, Hisao| Edamatsu, Motonari| Watanabe, Shogo| Kitawaki, Tomoki| |
| Abstract | 臨床においては,筋機能や機能不全を診断するために,表面筋電図や針筋電図,筋生検などが行われている｡しかし,これらの方法では筋機能や筋収縮メカニズムを連続的に測定することは難しい｡本研究では新たに筋内挿入型プローブと測定システムを開発した｡測定プローブは光ファイバと6本の白金細線から構成されている｡光ファイバを用いて筋の局所血流量と筋内圧力を測定し,6個の電極を用いて運動単位活動電位を測定した｡プローブと測定システムの基礎特性を確認した後,麻酔下のラットの排腹筋において,安静時および局所虚血時の活動電位,血流量,筋内圧力を測定した｡また脛骨神経を電気刺激し,活動電位波形から伝播速度を算出したところ,プローブは正常に動作していることが確認できた｡さらに筋小胞体からのカルシウム放出チャネルを抑制するdantroleneを筋注すると,筋内圧力波形は大きく減少したが,活動電位波形はほとんど変化しないことがわかった｡ |
| Keywords | 筋機能 (muscle function) 筋内圧力 (intramuscular pressure) 筋内血流 (intramuscular blood flow) 活動電位 (action potential) 筋収縮 (muscle contraction) |
| Publication Title | 岡山大学医学部保健学科紀要 |
| Published Date | 2005-12-25 |
| Volume | volume16 |
| Issue | issue1 |
| Start Page | 1 |
| End Page | 8 |
| ISSN | 1345-0948 |
| language | Japanese |
| File Version | publisher |
| NAID | 120002307295 |
| JaLCDOI | 10.18926/11709 |
|---|---|
| Title Alternative | 歯科インプラント動揺測定装置の開発 |
| FullText URL | 011_1_025_034.pdf |
| Author | Oka, Hisao| Ono, Koichi| Wijaya Sastra Kusuma| Saratani, Keiji| Kawazoe, Takayoshi| |
| Abstract | Evaluation of dental implantation is very important because it gives useful information for both planning the dental treatment and evaluating of prognosis. This study aimed at improving our previously developed Tooth Mobility (TM) tester and developing a dental implant movement (IM) checker. The measuring probe included a bimorph transducer of two piezoelectric elements. It was actuated by single frequency and detected tooth acceleration. The acceleration signal was processed and the IM score was calculated in PC. Two artificial implant models in which IMZ implant was buried with different elasticity of surrounding (molteno(@)) were used to examine the performance of the IM checker. The IM scores obtained in the models were 29 and 58. The measurement time was below 15 seconds. The average of measurement variation of one operator was below 6% and the average variation among five operators was below also 6%. The IM checker reduced a measurement variation by 51% and a measuring time by 61% compared with those of the TM tester in natural teeth. The newly developed IM checker had sufficient measuring reliability and we could objectively estimate the implant movement in dental clinics. |
| Keywords | tooth mobility (歯の動揺) mechanical mobility (機械モビリティ) dental implant (インプラント) manual examination (触診) |
| Publication Title | 岡山大学医学部保健学科紀要 |
| Published Date | 2000-11-16 |
| Volume | volume11 |
| Issue | issue1 |
| Start Page | 25 |
| End Page | 34 |
| ISSN | 1345-0948 |
| language | English |
| File Version | publisher |
| NAID | 120002313864 |
