Summary
International Symposium on Antennas and Propagation
2012
Session Number:POS2
Session:
Number:POS2-54
Study of Implantable Antenna for Artificial Knee Joints
Soichiro Yanase, Masaharu Takahashi, Kazuyuki Saito, Koichi Ito,
pp.-
Publication Date:2012/10/29
Online ISSN:2188-5079
Summary:
In recent years, implantable devices embedded into human bodies have attracted attention as a form of miniaturization of wireless communication devices [1]. The implantable devices are supposed to be utilized in diverse scenes, such as door access control of critical facilities or protection of pet. We applied the implantable devices to artificial knee joints. Figure 1 shows the artificial knee joints structure. The artificial knee joints are composed four parts, two metal parts (femoral component and tibial component) and dielectric parts (patellar component and plastic spacer). Plastic spacer continues to be worn away. Hence patients are necessary to exchange parts of their artificial knee joints every 15-20 years. The artificial knee joints are may be unknown its product information caused by that the life of it is very long. In that case, looking into information takes time and effort. Therefore a burden of the patients in the reoperation is increased. However, if implantable devices are embedded into bodies with artificial knee joints, it becomes possible to detect product information quickly with non-invasive by using Reader/Writer. To read the information, it is necessary to excite the IC (Integrated Circuit) chip in the implantable devices. Therefore, a role of an antenna which is mounted on the device is important. In addition, the characteristics of the antenna are changed by influence of the surrounding environment [2]-[5]. In this paper, we evaluated characteristics of the antenna embedded into human body using a high-resolution artificial knee joints models.