We use cookies to understand how you use our site and to improve your experience. This includes personalizing content and advertising. To learn more, click here. By continuing to use our site, you accept our use of cookies. Cookie Policy.

Features Partner Sites Information LinkXpress
Sign In
Advertise with Us

Download Mobile App




Smart Stent Monitors Hemodynamic Changes and Restenosis

By HospiMedica International staff writers
Posted on 06 Jul 2018
Print article
Image: The smart stent with attached antenna on top (Photo courtesy of UBC).
Image: The smart stent with attached antenna on top (Photo courtesy of UBC).
A novel electromechanical stent equipped with microscale sensors and a wireless interface enables continuous monitoring of restenosis through an implanted stent.

Under development at the University of British Columbia (UBC; Vancouver, Canada) and Vancouver General Hospital (VCH; Canada), the electrically active stent functions as a wireless pressure transducer by tracking local hemodynamic changes, as manifested by the inherent resonance of the smart stent, which is determined when the pressure sensor and the inductive stent reactions become equal to each other. The data is transmitted wirelessly via a loop antenna glued to the stent, helping clinicians detect early signs of restenosis.

Prototypes models withstood crimping forces higher than 100 N and balloon expansion pressure up to 16 atmospheres, and showed wireless sensing with a resolution of 12.4 mm Hg. In a swine model, the device demonstrated wireless detection of blood clot formation, as well as real‐time tracking of local blood pressure change over a range of 108 mmHg. The researchers claim that the smart stent fulfills both engineering and clinical requirements, as well as complying with standard angioplasty demands. The study was published in the May 2018 issue of Advanced Science.

“We modified a stent to function as a miniature antenna and added a special micro-sensor that we developed to continuously track blood flow. The data can then be sent wirelessly to an external reader, providing constantly updated information on the artery's condition,” said lead author professor of electrical and computer engineering Kenichi Takahata, PhD, of UBC. “The device uses medical-grade stainless steel and looks similar to most commercial stents. It's the first angioplasty-ready smart stent; it can be implanted using current medical procedures, without modifications.”

“X-rays such as CT or diagnostic angiograms, which are the standard tools for diagnosis, can be impractical or inconvenient for the patient,” said study co-author vascular surgeon Professor York Hsiang, MD, of UBC and VCH. “Putting a smart stent in place of a standard one can enable physicians to monitor their patient’s health more easily and offer treatment, if needed, in a timely manner.”

Related Links:
University of British Columbia
Vancouver General Hospital
Gold Member
12-Channel ECG
CM1200B
Gold Member
STI Test
Vivalytic Sexually Transmitted Infection (STI) Array
Silver Member
Compact 14-Day Uninterrupted Holter ECG
NR-314P
New
Hemodynamic Monitoring Sensor
FloTrac Jr

Print article

Channels

Surgical Techniques

view channel
Image: The Early Bird Bleed Monitoring System provides visual and audible indicators of the onset and progression of bleeding events (Photo courtesy of Saranas)

Novel Technology Monitors and Lowers Bleeding Complications in Patients Undergoing Heart Procedures

Bleeding complications at the femoral access site can significantly hamper recovery, affecting the success of procedures, patient satisfaction, and overall healthcare costs. It is crucial for surgeons... Read more

Patient Care

view channel
Image: The newly-launched solution can transform operating room scheduling and boost utilization rates (Photo courtesy of Fujitsu)

Surgical Capacity Optimization Solution Helps Hospitals Boost OR Utilization

An innovative solution has the capability to transform surgical capacity utilization by targeting the root cause of surgical block time inefficiencies. Fujitsu Limited’s (Tokyo, Japan) Surgical Capacity... Read more

Health IT

view channel
Image: First ever institution-specific model provides significant performance advantage over current population-derived models (Photo courtesy of Mount Sinai)

Machine Learning Model Improves Mortality Risk Prediction for Cardiac Surgery Patients

Machine learning algorithms have been deployed to create predictive models in various medical fields, with some demonstrating improved outcomes compared to their standard-of-care counterparts.... Read more

Point of Care

view channel
Image: The new eye-safe laser technology can diagnose traumatic brain injury (Photo courtesy of 123RF)

Novel Diagnostic Hand-Held Device Detects Known Biomarkers for Traumatic Brain Injury

The growing need for prompt and efficient diagnosis of traumatic brain injury (TBI), a major cause of mortality globally, has spurred the development of innovative diagnostic technologies.... Read more
Copyright © 2000-2024 Globetech Media. All rights reserved.