A brand new delicate ultrasound patch is designed to offer long-term, hands-free monitoring of fetal well being in actual time.
Engineers on the University of California, San Diego, have developed a delicate, wearable ultrasound patch that may constantly monitor a fetus for hours at a time whereas sustaining dependable efficiency even because the fetus and umbilical twine transfer all through being pregnant.
The machine may assist physicians establish issues earlier in high-risk pregnancies. Throughout medical testing, the patch detected extended irregular fetal alerts in a single case, prompting an early Cesarean supply. Researchers mentioned the intervention might have helped save the newborn’s life. The know-how may additionally enhance entry to prenatal care in low-resource areas the place skilled ultrasound specialists and steady monitoring are sometimes unavailable.
The findings had been printed in Nature Biotechnology.
“Wearable ultrasound know-how has the potential to allow steady prenatal monitoring and enhance being pregnant outcomes in ways in which had been beforehand not potential,” mentioned research co-first writer Geonho (Tom) Park, a chemical and nanoengineering PhD pupil on the UC San Diego Jacobs Faculty of Engineering. Park co-led the research with fellow UC San Diego Jacobs Faculty of Engineering co-first authors Yizhou Bian, Hao Huang, and Sai Zhou.
Autonomous Monitoring Overcomes Fetal Motion Challenges
Most prenatal ultrasounds present solely a short have a look at fetal well being and require skilled sonographers to function the gear. In distinction, the brand new patch is designed to stay on the physique and constantly monitor a child’s anatomy and blood circulate in actual time with out the necessity to manually place an ultrasound probe.
“To comprehensively monitor moms and infants over the period of time wanted to catch issues like preeclampsia, you want a system that may work constantly and largely by itself,” Bian mentioned. “That’s the reason the sensing depth, practical capabilities, and autonomy of this ultrasound know-how are crucial.”
One of many largest obstacles to long-term fetal monitoring is the fixed motion of each the fetus and the umbilical twine. To resolve this downside, the researchers created autonomous monitoring algorithms that may routinely find and comply with the umbilical twine because it strikes. This enables the patch to gather constant measurements even when the mom or fetus adjustments place.
“With steady monitoring, we had been in a position to observe dynamic fluctuations in blood circulate that may doubtless be missed with typical ultrasound exams,” Huang mentioned.
Early Detection of Being pregnant Issues
“Our system even detected an abnormality throughout certainly one of our medical visits,” Park added. “That being pregnant later resulted in a supply at 29 weeks, and it demonstrated how steady monitoring may assist establish issues a lot sooner than we are able to immediately.”
The research builds on greater than a decade of wearable ultrasound analysis within the laboratory of chemical and nanoengineering professor Sheng Xu at UC San Diego. Xu’s group has beforehand developed wearable ultrasound methods for purposes together with noninvasive central blood pressure monitoring, mobile heart monitoring, and gesture-based control of robotic devices. The work was carried out within the Aiiso Yufeng Li Household Division of Chemical and Nano Engineering on the UC San Diego Jacobs Faculty of Engineering.
For the brand new research, researchers examined the patch in a multicenter medical trial carried out at Jacobs Medical Heart at UC San Diego Well being and the John Radcliffe Hospital on the University of Oxford. The patch produced measurements that closely matched those collected using standard handheld ultrasound devices.
Extensive Clinical Testing Demonstrates Broad Applicability
The researchers gathered continuous monitoring data over periods of several hours from 62 pregnancies. The group included both healthy pregnancies and pregnancies affected by gestational diabetes, preeclampsia, high blood pressure, and abnormal fetal growth.
The team now aims to integrate the patch into a compact electronic platform that could eventually enable fully wireless operation.
Reference: “Fetal monitoring for high-risk pregnancies using a wearable ultrasound patch” by Geonho Park, Yizhou Bian, Hao Huang, Sai Zhou, Siyu Qin, Muyang Lin, Xinyi Yang, Aaron Lee, Anand Ramkumar, Mariana Tome, Jayne Lander, Xiangjun Chen, Shenghan Wang, Pranavi Bheemreddy, Liam Stanton, Ren Sheng, Guihuan Guo, Mabel Shehada, Ruotao Wang, Alexa Roa, Chengchangfeng Lu, Wentong Yue, Ray S. Wu, Xiaoxiang Gao, Hongjie Hu, Amer Yaghi, Mark Liu, Lawrence Impey, Sally L. Collins, Aris T. Papageorghiou, Louise C. Laurent, Keith A. Wear, Antoniya Georgieva and Sheng Xu, 26 May 2026, Nature Biotechnology.
DOI: 10.1038/s41587-026-03140-1
This work was supported by Wellcome Leap (HER01430), the National Institutes of Health (1R01EB033464-01 and 1R01HL171652-01), and Accelerating Innovation to Market at UC San Diego.
Never miss a breakthrough: Join the SciTechDaily newsletter.
Follow us on Google and Google News.
