An efficient inductive power link design for retinal prosthesis

Kendir, G.A.; Liu, Wentai; Bashirullah, Rizwan; Wang, Guoxing; Humayun, Mark S.; Weiland, J.

doi:10.1109/iscas.2004.1328935

Cited by 24 publications

(21 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This field induces a current in the secondary powering coil, located in the implant. The inductive power link is designed following the methodology described by Kendir et al [25].…”

Section: Inductive Linkmentioning

confidence: 99%

“…A tetherless inductive link will provide both powering of and communications with the implant. Recent studies have demonstrated that the total power that can be delivered to a telemetric implant by the use of an inductive link is compatible with the required electrical power levels for commercial LEDs [25]. The complete implant is placed subcutaneously, to overcome complications associated with the percutaneous ports.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Telemetric light delivery system for metronomic photodynamic therapy (mPDT) in rats

Zaane

Subbaiyan

Heuvel

et al. 2010

Journal of Biophotonics

View full text Add to dashboard Cite

Light delivery and monitoring during photodynamic therapy (PDT) is often limited by the need for a physical link between the light source, detectors and the treatment volume. This paper reports on the first in vivo experiments performed with a fully implantable telemetric system, designed for a rat glioblastoma model. In this system, light delivery is performed using a solid state optode containing 2 LEDs, and 4 photodiodes which will be used to monitor light delivery in future experiments. Powering and communication is achieved by means of an inductive link. The implant may remain in the animal for extended time periods, making it particularly interesting for performing metronomic PDT. In this paper, we demonstrate the feasibility of in vivo light delivery and biocompatibility of the device.. Activation of the inductive link as well as illumination of the brain by the LED did not influence animal behavior during or after treatment. We show that the implant can remain in the animal for two weeks without causing serious biological reactions.

show abstract

“…This field induces a current in the secondary powering coil, located in the implant. The inductive power link is designed following the methodology described by Kendir et al [25].…”

Section: Inductive Linkmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Telemetric light delivery system for metronomic photodynamic therapy (mPDT) in rats

Zaane

Subbaiyan

Heuvel

et al. 2010

Journal of Biophotonics

View full text Add to dashboard Cite

show abstract

“…M 1 is a high-speed power MOSFET. A design methodology has been developed to optimize the coil structure within the specifications [7][8] and implemented in MATLAB. The tool includes the influence of parasitic effects such as skin and proximity effect and parasitic capacitance.…”

Section: Class-e Power Amplifier Inductive Link Designmentioning

confidence: 99%

Adaptive transcutaneous power delivery for an artificial anal sphincter system

Zan

Yan

Liu

et al. 2009

Journal of Medical Engineering & Technology

View full text Add to dashboard Cite

For controlling anal incontinence, a novel artificial anal sphincter system with sensor feedback based on transcutaneous energy transmission was developed. The device mainly comprises an artificial anal sphincter, a wireless power supply subsystem, and a communication subsystem. A transcutaneous power delivery system employing a class-E power amplifier, based on the adaptive control technique, is discussed in this paper. Amplitude modulation of the class-E power amplifier is integrated in the system and applied for the adaptive transcutaneous power delivery. Optimization of the power transfer efficiency and the misalignment tolerance is obtained. Experiments show that the system is capable of delivering at least 150 mW, with a power transfer efficiency of 41% over a distance of 3 cm, which can meet the electric power requirements of the artificial anal sphincter system. The power transfer frequency is 760 kHz.

show abstract

“…Powering biomedical devices is a major issue in the design of wearable and implantable electronics Chaimanonart et al (2006); Chen et al (2009); Kendir et al (2004); Smith et al (2002). Often, there is not space available for a battery that will last for the lifetime of the device, as batteries are limited both by total charge storage ability and number of recharge cycles Heller (2006).…”

Section: Introductionmentioning

confidence: 99%