Semi-Compliant PTCA Balloon Catheters are specialized medical devices used in percutaneous transluminal coronary angioplasty (PTCA) procedures. These catheters are primarily designed for predilatation of coronary arteries, lesion preparation, and facilitating stent delivery.
Unlike non-compliant balloons, semi-compliant balloons are designed to slightly expand beyond their nominal diameter when higher pressure is applied. This controlled adaptability makes them particularly useful in cases where the artery has irregular or calcified lesions. They balance flexibility and precision, ensuring that the vessel is adequately prepared without the risk of uncontrolled vessel trauma.
🌟 Why Semi-Compliant PTCA Balloons Are Important:
Flexibility: The balloon conforms slightly to vessel anatomy, making it easier to cross tortuous or curved vessels.
Adaptability: Useful in initial lesion preparation as they can expand beyond nominal size under higher pressures.
Safety: Reduces the risk of vessel rupture compared to over-dilating with non-compliant balloons.
Supportive Role: Ideal for stent placement since they can open up narrowed vessels adequately before deploying the stent.
đź“Ś Common Clinical Uses:
Dilatation of de novo coronary lesions
Preparing calcified or fibrotic lesions before stent placement
Post-stent optimization when small adjustments are needed
Navigating complex, tortuous coronary anatomies due to trackability
Lesion preparation in elective PCI and primary angioplasty
⚡ Advanced Features:
Ultra-thin balloon wall for low crossing profile and smooth lesion entry
Radiopaque markers for precise balloon positioning under fluoroscopy
Rapid inflation/deflation system reduces procedure time and patient risk
Semi-compliant material allows diameter growth up to 10–15% at high pressure
Shaft design ensures pushability and torque control
Rated Burst Pressure (RBP) up to 20 atm for challenging lesions
đź“Ź Technical Specifications (Expanded):
Balloon Diameter Range: 1.0 mm to 5.0 mm
Common Sizes: 1.25, 1.50, 1.75, 2.00, 2.25, 2.50, 2.75, 3.00, 3.25, 3.50, 3.75, 4.00 mm
Balloon Lengths: 6 mm, 8 mm, 10 mm, 12 mm, 15 mm, 20 mm, 25 mm, 30 mm
Balloon Compliance: Semi-compliant (controlled expansion under pressure)
Nominal Pressure (NP): 6–8 atm
Rated Burst Pressure (RBP): Up to 20 atm
Usable Catheter Length: 144 cm
Guidewire Compatibility: 0.014”
Sheath Compatibility: 5F / 6F introducer sheath
Tip Entry Profile: 0.016” (for smooth lesion entry)
Marker Bands: 2 Platinum–Iridium markers
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