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Updated: Aug 1, 2026
11:27
Magnetically-Assisted Remote Controlled Microcatheter Tip Deflection under Magnetic Resonance Imaging
Published on: April 4, 2013
[Rotational stability of angiography catheters]
1Abteilung Röntgendiagnostik, Kreiskrankenhaus Rendsburg.
Zeitschrift Fur Kardiologie
|October 1, 1992
Summary
Catheter rotatory stability, crucial for selective probing, correlates with diameter and material. Wire reinforcement significantly enhances this stability, with heavier mesh indicating better performance in larger catheters.
Area of Science:
- Medical Devices
- Biomedical Engineering
- Catheter Technology
Background:
- Rotatory stability is a critical parameter for effective catheter-based procedures.
- Accurate measurement of rotatory stability is essential for catheter selection and design.
- Existing literature lacks comprehensive data on rotatory stability across diverse commercial catheters.
Purpose of the Study:
- To introduce a standardized method for measuring catheter rotatory stability.
- To report rotatory stability measurements for 70 commercially available catheters.
- To identify key factors influencing catheter rotatory stability.
Main Methods:
- A novel method for quantifying rotatory stability was developed and applied.
- Seventy distinct commercial catheters underwent standardized rotatory stability testing.
- Measurements were correlated with physical properties like diameter, material, and wire reinforcement.
Main Results:
- A strong correlation was observed between rotatory stability and the fourth power of the external diameter, particularly for non-reinforced catheters.
- Catheter material significantly impacts stability, with a 1:2:4 ratio for Teflon, polyethylene, and nylon, respectively.
- Wire reinforcement increases rotatory stability by an average factor of approximately 3.
- For 5 F and 6 F catheters, rotatory stability correlates with the weight of the reinforcing wire mesh.
Conclusions:
- Catheter rotatory stability is predictable based on physical dimensions and material composition.
- Wire reinforcement is a key factor in enhancing catheter performance for demanding applications.
- The findings provide valuable data for clinicians and manufacturers in selecting and developing improved catheter systems.
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