Catheter Reprocessing for Coronary Angiography: It is Not Safe.

Area of Science:

• Cardiovascular Interventions
• Medical Device Reprocessing
• Materials Science

Background:

• Coronary angiography and percutaneous coronary intervention procedures are increasingly common globally.
• Catheters used in these procedures are designated as single-use devices, but their reuse is sometimes debated.
• This study investigates the impact of reprocessing on the structural integrity and thermal stability of coronary angiography catheters.

Purpose of the Study:

• To evaluate the structural characteristics of new versus reprocessed coronary angiography catheters.
• To assess the thermal stability of coronary angiography catheters after multiple reprocessing cycles.
• To determine if reprocessing affects the material integrity and safety of these devices.

Main Methods:

• Five new Judkins left coronary angiography catheters were selected.
• Catheters were reprocessed up to seven times.
• Optical analysis (magnifying glass) and thermogravimetric analysis were performed on new and reprocessed catheters.

Main Results:

• Reprocessing led to visible structural damage, including crushing, color changes, folds, dents, and deformations.
• Lumen narrowing and loss of polymeric material were observed in reprocessed catheters.
• Thermogravimetric analysis confirmed a significant loss of mass in catheters after reprocessing.

Conclusions:

• Reprocessing significantly compromises the structural integrity and reduces the mass of coronary angiography catheters.
• Observed structural degradation indicates potential risks associated with reusing these devices.
• The findings strongly support the recommendation against the reuse of single-use coronary angiography catheters to maintain patient safety.