Development of antenna for wireless power transmission to capsular endoscope

2018

IEICE ComEX

Self Cite

Recently, the capsular endoscope that has extra function has been investigated. Although the power consumption tends to increase as the ability increases, it is difficult to increase the capacity of the battery due to the volumetric problem. In this study, we proposed an antenna for both wireless power transmission and image transmission to be mounted on a capsule endoscope. In this paper, we discussed the requirements desired to antennas to be mounted in capsular endoscope.

Section: External Antennamentioning

confidence: 99%

“…Recently, various studies of capsular endoscopes have been investigated [1,2,3,4,5,6,7,8,9,10]. Capsular endoscopes are kind of medical device that have about 20 mm length and 10 mm diameter.…”

Section: Introductionmentioning

confidence: 99%

The film antenna for capsular endoscope

Kai

2018

IEICE ComEX

Self Cite

“…However, there are few examples of proposing a position estimation system using the antenna proposed assuming WPT. The position estimation using the antenna proposed in the previous study [16] is strongly influenced by the directivity of the antenna. In the previous study [11], the influence of antenna directivity was investigated as one of the factors affecting the estimation accuracy.…”

Section: Introductionmentioning

confidence: 98%

Position Estimation for the Capsule Endoscope Using High-Definition Numerical Human Body Model and Measurement

Yoshitake

2022

IEICE Trans. Commun.

Self Cite

Currently, wireless power transmission technology is being developed for capsule endoscopes. By removing the battery, the capsule endoscope is miniaturized, the number of images that can be taken increases, and the risk of harmful substances leaking from the battery when it is damaged inside the body is avoided. Furthermore, diagnostic accuracy is improved by adjusting the directivity of radio waves according to the position of the capsule endoscope to improve efficiency and adjusting the number of images to be taken according to position by real-time position estimation. In this study, we report the result of position estimation in a high-definition numerical human body model and in an experiment on an electromagnetic phantom.

“…Furthermore, most of these studies have developed algorithms on the assumption that radio waves are radiated from omnidirectional antennas. On the other hand, the wireless power transmission technology in these studies adopts the microwave method [16] which supplies electric power via the antenna, consideration of the directivity of the antenna is required. Among the previous studies, there are no studies that are described with the antenna when transmitting and receiving, and antenna characteristic is not considered.…”

Section: Introductionmentioning

confidence: 99%

Localization Method Using Received Signal Strength for Wireless Power Transmission of the Capsule Endoscope

Hiyoshi

2019

IEICE Trans. Commun.

Self Cite

In recent years, capsule endoscopy has attracted attention as one of the medical devices that examine internal digestive tracts without burdening patients. Wireless power transmission of the capsule endoscope has been researched now, and the power transmission efficiency can be improved by knowing the capsule location. In this paper, we develop a localization method wireless power transmission. Therefore, a simple algorithm for using received signal strength (RSS) has been developed so that position estimation can be performed in real time, and the performance is evaluated by performing three-dimensional localization with eight receiving antennas.