Responsive image

Braided Stent

An indispensable medical marvel designed primarily for cardiovascular interventions. Engineered to address arterial constriction and occlusion, this revolutionary device upholds vascular patency by preventing reocclusion and ensuring unimpeded blood circulation. Constructed from meticulously interwoven strands of specialized metal alloys, notably nitinol – an amalgamation of nickel and titanium – the stent boasts a tubular architecture. This ingenious configuration empowers the stent to adapt dynamically, elongating under compressive forces and expanding when subjected to pressure, all while maintaining its structural integrity.

Responsive image

Stenting Mechanism

A hallmark of the braided stent lies in its exceptional flexibility. This adaptability enables seamless accommodation within diverse vessel contours and accommodates physiological movement. Implantation is achieved through a catheter-based delivery system, whereby the stent is housed within a slender catheter. Guided with precision, the catheter conveys the stent to the precise site of occlusion.

Image 2 Image 1

Stress distributions

Contact Forces

Following our Finite Element Analysis (FEA) simulation, we present a comprehensive evaluation of Contact Normal and Shear Stress distributions. These insights delve into the intricate mechanics of contact interfaces, revealing nuanced material interactions. Leveraging advanced computational tools, we decipher the complexities of stress profiles, advancing our technical prowess and augmenting medical device development.

Image 2 Image 1

Contacts Normal and Shear Force distributions

Responsive image

Stent FEA Simulation Process

Executive Summary

Finite Element Analysis (FEA) has proven to be a pivotal tool in driving innovation and precision within the realm of stent design for medical applications. By meticulously simulating and analyzing complex mechanical interactions, FEA provides invaluable insights that guide the optimization of stent designs, ultimately elevating their performance, safety, and clinical efficacy. This report presents a concise overview of the engineering insights that FEA has delivered, offering a comprehensive glimpse into the transformative impact it brings to medical device development.

Optimized Material Selection

FEA facilitates a systematic evaluation of different material properties, ensuring the chosen material aligns with both structural requirements and biocompatibility standards. This analysis empowers informed decisions that drive the stent's longevity and physiological compatibility.

Stress Concentration Analysis

By pinpointing areas of stress concentration within the stent architecture, FEA enables precise modifications to minimize potential failure points. The result is a stent design that can withstand a range of physiological forces without compromising structural integrity.

Strut Geometry Enhancement

FEA simulations allow for the optimization of stent strut shape and size, striking a delicate balance between radial strength and the prevention of tissue damage. This insight fosters a design that aligns seamlessly with diverse vessel geometries.

Deployment Simulation

Virtual deployment simulations facilitated by FEA shed light on how the stent interacts with vessel walls during expansion. This knowledge refines deployment mechanisms, enhancing procedural precision and reducing potential complications.

Flexibility and Conformity

FEA-driven analysis gauges stent flexibility and conformity to varying vessel geometries, ensuring adaptability while mitigating risks of kinking or migration. This contributes to improved long-term performance and patient outcomes.

Fatigue Analysis

FEA’s capability to simulate cyclic loading conditions aids in predicting potential fatigue failure of the stent over time. This insight guides design enhancements that extend the device's lifespan and reliability.

Balloon-Stent Interaction

FEA assesses the interaction between the stent and expansion balloon during deployment, optimizing compatibility and minimizing risks inherent in the procedure.

Contact Pressure Study

Insights from FEA provide an in-depth understanding of pressure distribution between the stent and vessel wall, safeguarding against excessive pressures that could lead to tissue damage.

Biomechanical Compatibility

FEA considerations of the biomechanical behavior of the stent within the vascular environment ensure that stresses imparted on surrounding tissues remain within safe limits, enhancing overall patient safety.

Radiopacity Enhancement

FEA-guided optimization of radiopacity markers or coatings ensures accurate visualization during medical imaging, enhancing procedural precision and facilitating post-implantation assessment.

TetraElements, LLC

Cupertino, California, USA

Careers at TetraElements

  • Simulation Services:
    • Structural Analysis:
    • Stress/Strain Analysis
    • Deformation Analysis
    • Fatigue Analysis
    • Modal Analysis
    • Dynamic Analysis
    • Vibration Analysis
    • Thermal Analysis
    • Electromagnetic Simulations
    • Optical Simulations