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Cardiovascular Implant Torsion Fatigue Tester

Vascular Stent Torsion Durability Tester

Model: UTCA-VST6, ISO 25539, ASTM F2942.

UTCA-VST6 Vascular Stent Torsion Durability Tester is designed to perform accelerated torsional fatigue testing on vascular stents in accordance with ISO 25539 and ASTM F2942 standards, evaluating their long-term structural integrity under cyclic torsional loading.


The system comes standard with six independently controlled test stations. These stations feature changeable fixtures to accommodate mock vessels of various lengths and diameters, and support custom fixtures for specialized mock vessels with complex geometric profiles (e.g., bifurcated). Through an innovative "internal test fluid circulation mechanism", the system provides precise control over test fluid pressure and temperature.

The entire process (from control and acquisition to computation, analysis, and recording) is managed by our proprietary, self-developed TEST software.


Application: Suitable for vascular stents, surgical stents, etc.

General Introduction

UTCA-VST6 Vascular Stent Torsion Durability Tester is designed to perform accelerated torsional fatigue testing on vascular stents in accordance with ISO 25539 and ASTM F2942 standards, evaluating their long-term structural integrity under cyclic torsional loading.


The system comes standard with six independently controlled test stations. These stations feature changeable fixtures to accommodate mock vessels of various lengths and diameters, and support custom fixtures for specialized mock vessels with complex geometric profiles (e.g., bifurcated). Through an innovative "internal test fluid circulation mechanism", the system provides precise control over test fluid pressure and temperature.

The entire process (from control and acquisition to computation, analysis, and recording) is managed by our proprietary, self-developed TEST software.


Application: Suitable for vascular stents, surgical stents, etc.


Key Features

  • Main features
  • Standard

1), Vertical orientation design for ergonomic operation and compatibility with various stent designs.

2), Six independently controlled test stations facilitate personalized testing research on a variety of stent types.

3), High-precision motor control enables a wide range of torsional angles with exceptional accuracy.

4), An internal fluid circulation system with precise pressure and temperature control for enhanced in-vivo condition simulation.

ASTM F2942: Standard Guide for in vitro Axial, Bending, and Torsional Durability Testing of Vascular Stents

ISO 25539-1: Cardiovascular implants - Endovascular devices - Part 1: Endovascular prostheses

ISO 25539-2: Cardiovascular implants - Endovascular devices - Part 2: Vascular stents

ISO 25539-3: Cardiovascular implants — Endovascular devices — Part 3: Vena cava filters.



Main Technical Specification

ModelUTCA-VST6
Sample CapacityUp to 6, Independently Controlled
Mock Vessel SizeAllowable Diameter Range: 2 to 50mm, Max.   Length: 300mm
Allowable Axial Amplitude0.5 to 13mm, Accuracy of ±0.1mm
Torsional Angle Range-180°to +180°, Accuracy of ±1°
Drive WaveformOptimized Triangular Wave
Allowable Frequency1~5Hz
Test MediumPurified Water, Saline Solution
Fluid Temperature ControlRoom Temperature to 42℃, ±2℃
OthersCommon Accessories, Fixture Customization   Available


Standard

ASTM F2942 Vascular Implants Axial, bending, torsional and compression durability testing

ASTM F2942 specifies in vitro test methodologies to evaluate the cyclic durability of vascular stents under non-radial mechanical deformations (axial, bending, and torsion) that occur in vivo due to musculoskeletal motion, breathing, or cardiac activity. 

ASTM F3036 Testing of Absorbable Stents

ASTM F2942 specifies in vitro test methodologies to evaluate the cyclic durability of vascular stents under non-radial mechanical deformations (axial, bending, and torsion) that occur in vivo due to musculoskeletal motion, breathing, or cardiac activity. include Axial, bending, torsional, Pulsatile Durability, Radial Loading etc., test. 

ASTM F3067 Radial Loading Test of Vascular Stents

ASTM F3067 establishes in vitro test frameworks to characterize the radial mechanical performance of balloon-expandable vascular stents and self-expanding vascular stents. It quantifies three key indicators: radial strength and collapse pressure for balloon-expandable stents, and chronic outward force (COF) for self-expanding stents.

ASTM F2606 Three-Point Bending Test for Balloon-Expandable Vascular Stents and Stent Systems

ASTM F2606 defines quantitative three-point bending procedures to characterize the bending flexibility and stiffness of balloon-expandable vascular stents and stent systems (pre-deployment and deployed states). It is a critical testing protocol in the biomedical engineering field. Since vascular anatomies are naturally curved and tortuous, a stent must be flexible enough to navigate through the delivery pathway (trackability) and conform to the vessel's curvature once deployed without causing vascular trauma . This standard provides the guidelines to measure these mechanical properties accurately.

ASTM F2477 Test for in-vitro Pulsatile Durability Testing of Vascular Stents

ASTM F2477 designed to evaluate the long-term fatigue durability and radial cyclic deformation resistance of vascular implants under simulated physiological pulsatile loading conditions. It is crucial for simulating the cyclical stresses these medical devices endure inside human blood vessels. 

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