Guide catheter extension lock enables the strongest backup force during the antegrade approach in percutaneous...

Area of Science:

• Cardiovascular Interventions
• Medical Device Engineering

Background:

• Percutaneous coronary intervention (PCI) success relies on adequate guide catheter support.
• Existing methods for enhancing guide catheter backup may have limitations.

Purpose of the Study:

• To introduce and evaluate a novel technique, the "guide catheter extension lock" (Kiwami® lock), for improving guide catheter backup during PCI.
• To compare the backup force of the Kiwami® lock against other established techniques.

Main Methods:

• The Kiwami® lock technique involves balloon dilatation outside a child catheter to secure it to the vessel wall.
• Backup force was measured using an artificial cardiac vessel model comparing the Kiwami® lock with a standard child catheter, a delivery catheter, and an anchoring balloon technique.

Main Results:

• The Kiwami® lock demonstrated the highest backup force (112.1 ± 13.0 gf) compared to other methods.
• The anchoring balloon technique provided 98.3 ± 11.9 gf, the delivery catheter 67.4 ± 14.4 gf, and the standard child catheter 45.0 ± 4.6 gf.

Conclusions:

• The guide catheter extension lock (Kiwami® lock) technique offers superior backup support in PCI.
• This novel technique is effective and beneficial for complex PCI cases, including chronic total occlusions.