Fiber optic force sensing as turn-key
Force sensing is a way to measure interaction between multiple bodies. An example in the medical field is to measure the amount of force between a catheter tip and the human tissue.
FBGS’ Draw Tower Grating (DTG®) technology integrated in multi-core fibers lies at the base of this cutting-edge fiber optic force sensing concept. Building upon this technology, FBGS is currently developing a solution for high-resolution force sensing. The patented force sensing technology design is elegant in its simplicity of concept yet powerful. The optical fiber is integrated within a flexure, which relays external forces to the fiber. The flexure is axisymmetric to enable homogeneous non-preferential bending. Moreover, the sensor is built to measure a three-dimensional force where longitudinal and lateral forces are well decoupled. The force sensing solution comprises a fiber optic sensor, an interrogator and the software that manages all the algorithms for data readout and processing in real time.
This approach is designed to be generic to fit many different applications. One special integration is the integration into catheter tips and other types of non-robotic and robotic surgical tools.
∙ Turn-key fiber optic force sensing system (fiber, measurement system, software)
∙ Easy integration & assembly in existing systems
∙ Decoupling between longitudinal and lateral forces
∙ Solution tailored to customers’ needs & requirements
∙ High repeatability
∙ Revolutionary miniature design of catheter tip force sensor
∙ Passive component: electromagnetic compatibility with low risk for the patient
∙ Miniaturized and biocompatible fiber
Fields of application
Fiber optic force sensing is particularly well-suited for safety-critical applications in minimally invasive surgical procedures and in medical robotics, including for MRI and similar (electro)magnetic applications. FBGS provide a turn-key solution tailored to the individual requirements of your application.
Here are a few examples, where fiber optic force sensing can be integrated:
Minimally invasive biomedical & catheterization procedures
∙ Force sensing in needles
∙ Tip force detection in ablation catheters
. Force sensing in medical grippers
∙ Robotic instruments force detection and haptic feedback
Force sensing for continuum robotic systems
To go further- combining force and shape sensing in one device
Shape information is necessary for navigation and localization purposes, while force information is necessary to know the interaction with the environment both at the tip of the instrument. Put this way the complementarity of both technologies is clear. Therefore, we have started research efforts to make the integration of both possible in one single system and already have performed preliminary tests with promising results. The aimed benefit of this technology is an all-in-one solution that can provide in real time reliable shape and force information to increase procedural safety and efficacy for the cost of only one fiber.