An implantable wireless powered light source

Ya min Li, Wei hua Pei, Jun Tang*, Yu guang Wang, Zhao lin Yao, Zhi duo Liu, Hong da Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

A wireless powered small volume light source composed of light emitting diode (LED) array is developed for implantation. According to the volt-ampere characteristics of LED and the load characteristics of coil coupling power supply, the light power and work distance of implant LED-array are optimized by changing the number and series-parallel connection mode of LEDs in receiver. The wireless powered implant can provide 5.4 mW light. The entire implant is seamlessly packaged within parylene, a biocompatible material, coating by chemical vapor depositing. The volume of the implant is 9 mm×4 mm×3 mm, the weight of which is only 0.25 g. The device can work continuously for more than three weeks in 0.9% saline and the prime prototype of the device has been validated by animal implantation.

Original languageEnglish
Pages (from-to)81-86
Number of pages6
JournalOptoelectronics Letters
Volume16
Issue number2
DOIs
Publication statusPublished - 1 Mar 2020
Externally publishedYes

Keywords

  • A

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