Dilator connection firmness tester

Dilator connection firmness tester

Dilator connection firmness testerIt is a specialized device used to evaluate the mechanical strength of the connection site of dilators (such as medical catheters or industrial pipeline tools), ensuring that they will not fail under stress. The following is a systematic description of the device:

1. Core functions

• test objectiveQuantify the peel strength, tensile strength, and torsional performance of expanders and connecting components (such as joints and catheters).

• Application scenariosMedical device quality inspection (such as cardiovascular balloon catheters), industrial seal testing, pipeline tool acceptance, etc.

2. Main structural components

• Clamping system：

• Adaptive fixtureAdjustable jaws to accommodate expanders of different diameters (such as 2-30mm) and shapes (circular/irregular).

• Multi axis fixing deviceSupport axial tension, radial torsion, or multi-directional composite load testing.

• Power and Sensing Module：

• High precision servo motorProvide a force range of 0.1-500N with an accuracy of ± 0.5% FS.

• Dynamic force sensorReal time monitoring of tension, pressure, and torque (e.g. 0-50Nm).

• Displacement encoderRecord displacement changes (resolution 0.01mm).

• Environmental simulation unit(Optional):

• Temperature control boxSimulate an environment ranging from -20 ℃ to 80 ℃.

• Liquid immersion tankTest the connection performance in humid or saline environments.

• data system：

• HMI touch screenSet parameters (such as test speed, number of cycles).

• Data collection softwareGenerate force displacement curves and automatically calculate parameters such as peak force and elastic modulus.

• Report GenerationExport in PDF/Excel format, compliant with FDA 21 CFR Part 11.

3. Test mode

• static testingConstantly load to the set threshold (such as the tensile strength of the catheter specified in ISO 10555-3), and monitor whether the connection slips or breaks.

• Dynamic fatigue testing：

• Cycle times: 10 ^ 3 to 10 ^ 6 times (adjustable frequency 1-10Hz).

• Waveform: sine wave, square wave, or custom load curve.

• Failure Analysis：

• Automatically record failure modes (such as fracture, plastic deformation).

• High speed camera (optional) captures images of the moment of failure.

4. Key technical indicators

• accuracy classForce value ± 0.5%, displacement ± 0.2%.

• test speed0.1-500mm/min stepless speed regulation.

• safety mechanismOverload protection, emergency braking, protective cover interlock.

• complianceCompliant with standards such as ISO 594 and ASTM F2193.

5. Example of Operation Process (Medical Catheter Testing)

1. Sample installationFix the proximal end of the catheter onto the upper clamp and lock the connector onto the lower clamp.

2. Parameter SettingsSelect the stretching mode with a speed of 50mm/min and a threshold force of 20N.

3. Start testingThe device automatically applies force until the catheter separates from the connector.

4. Result determinationIf the separation force is ≥ 15N (industry standard), it is judged as qualified; Software marks failure points and generates reports.

6. Industry application cases

• medical fieldTest the connection strength of the cardiac stent delivery system to ensure that the catheter does not shift during surgery.

• industrial sectorSealing joint testing of oil and gas pipeline expansion tools to prevent leakage in high-pressure environments..

This tester provides key quality control measures for the reliability of expander connections through high-precision mechanical feedback and intelligent analysis, significantly reducing clinical and industrial applicationsFault wind in the middle