ArticleIEEE transactions on biomedical circuits and systems2025
A Wireless Implantable Closed-Loop Electrochemical Drug Delivery System.
Article in IEEE transactions on biomedical circuits and systems, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
5 citing papers in PubMed.
- Recent advances in transducers for through-tissue ultrasonic power transfer.Progress in biomedical engineering (Bristol, England) · 2026Review
- Hydrogels-Advanced Polymer Platforms for Drug Delivery.Polymers · 2026Review
- Autonomous Microrobots for Spatiotemporally Active Therapeutic Delivery and Controlled Release.Cyborg and bionic systems (Washington, D.C.) · 2026Review
- A Wireless Implantable Closed-Loop Electrochemical Drug Delivery System.IEEE transactions on biomedical circuits and systems · 2025Article
- On-demand electrochemically controlled compound release from an ultrasonically powered implant.RSC advances · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors.
Funding
Abstract
Wireless implantable drug delivery systems (DDSs) enable targeted, on-demand drug release to maximize therapeutic efficacy. Ultrasound has been proposed to wirelessly power and control millimeter-sized deeply implantable DDSs, but initial demonstrations encountered challenges in power transfer and release control reliability in dynamic in vivo environments. In this work, we present a closed-loop implantable DDS using ultrasound wireless power and communication in conjunction with an electrochemical drug release mechanism. The system consists of piezoelectric transducers for wireless power and data transmission, a drug delivery module containing drug-loaded electroresponsive nanoparticles, and a custom CMOS integrated circuit for closed-loop drug release using a programmable potentiostat capable of providing potentials up to $\boldsymbol{\pm}$1.5 V and sensing current up to $\boldsymbol{\pm}$100 $\boldsymbol{\mu}$A. The chip also improves power transfer robustness by enabling ultrasound power combining and rectifier voltage feedback which can be used to adapt the power transmitter and minimize misalignment. Closed-loop release control is tested in vitro using the wirelessly powered DDS at 8 cm depth by adjusting the potentiostat stimulus voltage based on feedback of redox current into fluorescein-loaded nanoparticles, resulting in consistent 2 $\boldsymbol{\mu}$g release across different fluorescein loading concentrations and a 39$\%$ reduction in release amount variation. These results demonstrate the effectiveness of closed-loop release control in enabling precise and reliable drug delivery.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.