Fiber Bragg grating based arterial localization device

Abstract

A critical first step to many surgical procedures is locating and gaining access to a patients vascular system. Vascular access allows the deployment of other surgical instruments and also the monitoring of many physiological parameters. Current methods to locate blood vessels are predominantly based on the landmark technique coupled with ultrasound, fluoroscopy, or Doppler. However, even with experience and technological assistance, locating the required blood vessel is not always an easy task, especially with patients that present atypical anatomy or suffer from conditions such as weak pulsation or obesity that make vascular localization difficult. With recent advances in fiber optic sensors, there is an opportunity to develop a new tool that can make vascular localization safer and easier. In this work, the authors present a new fiber Bragg grating (FBG) based vascular access device that specializes in arterial localization. The device estimates the location towards a local artery based on the bending of a needle inserted near the tissue surrounding the artery. Experimental results obtained from an artificial circulatory loop and a mock artery show the device works best for lower angles of needle insertion and can provide an approximately 40° range of estimation towards the location of a pulsating source (e.g. an artery).

Multi-Core Optical Fibers With Bragg Gratings as Shape Sensor for Flexible Medical Instruments

“…They have been used to monitor muscle fatigue, cardiac activities and body temperature [6]- [8]. In addition, they have been applied in cardiovascular diagnosis, artery pressure detection, artery detection, intra-aortic balloon pumping, prostatic implants, and urology [1], [9]. There are also many patents on medical instruments that use these sensors [10]- [13].…”

Recent Advances in Biomedical Photonic Sensors: A Focus on Optical-Fibre-Based Sensing

“…In addition, in vivo experiments (cardiac catheterisation) demonstrate a resolution of around 4.6 mN within the measurement range of 0 ∼ 3.5 N [ 158 , 159 ]. Finally, FBGs have also been proposed to measure the deflection angle for vascular access [ 160 ]. The device is based on three FBG sensors on an 18 G vascular access needle (90 mm long).…”

Testing Mechanical Properties of Rock Bolt under Different Supports Using Fiber Bragg Grating Technology

“…Using the advantages mentioned above, FBG sensors were first used to test the properties of composite materials in the aerospace industry and, nowadays, these sensors have found wide applications in biomedical engineering [17,18], civil engineering [19,20], composite structures [21], pipelines [22,23,24], and mechanical systems, among others. Mendez et al [25] first introduced them to geotechnical testing.…”