A wearable passive force sensor/active interrogator intended for intra-splint use for the detection and recording of bruxism

A wearable bite force sensing system proto type made up of a passive force sensor and an active interrogator/reader is described. The system is aimed a* bite sensing using a wireless link between the passive sensor to be located in (lie moutb and the external interrogator that can record the evolution of detected force. The interrogator generates a magnetic field that energizes the passive sensor which is also used as the information transmission earlier. The passive farce sensor does not need a battery to operate it because it can extract the energy it needs to operate fmin the carrier field generated by the interrogator. Occlusal force quantification can be used for the detection of bruxing episodes and registration. The small size of the components used (sind) and its further size reduction if they are integrated would allow an implant the size of a tooth

Novel system for bite-force sensing and monitoring based on magnetic eear field communication

Intraoral devices for bite-force sensing have several applications in odontology and maxillofacial surgery, as bite-force measurements provide additional information to help understand the characteristics of bruxism disorders and can also be of help for the evaluation of post-surgical evolution and for comparison of alternative treatments. A new system for measuring human bite forces is proposed in this work. This system has future applications for the monitoring of bruxism events and as a complement for its conventional diagnosis. Bruxism is a pathology consisting of grinding or tight clenching of the upper and lower teeth, which leads to several problems such as lesions to the teeth, headaches, orofacial pain and important disorders of the temporomandibular joint. The prototype uses a magnetic field communication scheme similar to low-frequency radio frequency identification (RFID) technology (NFC). The reader generates a low-frequency magnetic field that is used as the information carrier and powers the sensor. The system is notable because it uses an intra-mouth passive sensor and an external interrogator, which remotely records and processes information regarding a patient?s dental activity. This permits a quantitative assessment of bite-force, without requiring intra-mouth batteries, and can provide supplementary information to polysomnographic recordings, current most adequate early diagnostic method, so as to initiate corrective actions before irreversible dental wear appears. In addition to describing the system?s operational principles and the manufacture of personalized prototypes, this report will also demonstrate the feasibility of the system and results from the first in vitro and in vivo trials

Human motion detection using an earphone type wearable device and its application to health care （イヤホン型ウェアラブルデバイスを用いた身体動作検出とヘルスケアへの応用）

信州大学(Shinshu university)博士（工学）Thesis黒澤　真美. Human motion detection using an earphone type wearable device and its application to health care　（イヤホン型ウェアラブルデバイスを用いた身体動作検出とヘルスケアへの応用）. 信州大学, 2020, 博士論文. 博士（工学）, 甲第720号, 令和02年03月20日授与.doctoral thesi