The main purpose of PTCA balloon dilatation catheter is to dilate patients' narrow coronary artery diseased vessels and improve myocardial blood flow through minimally invasive interventional surgery (PTCA); It can also be used to deliver the release stent to the coronary artery stenosis of patients. Now, let’s learn more about it.

Here is the content:

• Introduction to PTCA

• About PTCA balloon dilatation catheter’s characteristics

• The application in PTCA

Introduction to PTCA

PTCA is short for percutaneous transluminal coronary angioplasty. The term PTCA broadly covers all interventional therapies for coronary heart disease. However, in the narrow sense, it is often referred to as traditional balloon coronary artery dilation (POBA, Plain old balloon angioplasty), which is the basis of all interventional treatment techniques for coronary heart disease. In order to reduce the restenosis rate of coronary arteries, one or more stents are often placed and long-term antiplatelet drugs are applied.

About PTCA balloon dilatation catheter’s characteristics

(1) Excellent passability:

Small tip length:1.5mm tip for Φ1.5-4.0:3-fold, while ensuring passability, avoids the phenomenon of fish mouth to a large extent, and makes it easier to pass through highly narrow lesions. Transition support wire design, provide good push force easy to reach the lesion site. So the patented hydrophilic coating PTCA balloon catheter is reflected most vividly in this point.

(2) Great pushability:

Excellent rod body force transmission design, strong rod push, more easily through tortuous vessels or serious calcification and other complex lesions.

(3) Better traceability:

More flexible balloon and catheter material, so that the balloon conform to the shape of blood vessels, providing better tracking.

The application in PTCA

(1) Predilated lesions:

The PTCA balloon dilatation catheter can open a pathway for stent implantation, assist in determining the diameter and length of the stent, reduce the incidence of poor stent adhesion, and reduce the damage of drug coating during the delivery of drug-eluting stent. Although comparative studies of DIRECT stenting and predilatation treatment, such as E-Sirius, DIRECT, and MEHILLI, have not concluded the disadvantages of DIRECT stenting, considering that the complexity of lesions can affect the success rate of stenting, At present, it is more inclined to perform balloon predilatation before intervention of CTO, high resistance lesions, B2-C complex lesions, especially open, bifurcation lesions, left main artery lesions and drug-eluting stent implantation.

(2) Post-expansion treatment after stent implantation:

Incomplete dilatation and poor adhesion after stent implantation are common. Current data and experience tend to use balloon dilatation after stent implantation in most cases. Some studies, such as CRUISE, suggest that post-dilatation can improve the prognosis of patients and reduce the risk of target vessel revascularization and stent thrombosis. Because the stent-conveying balloon is usually designed with Semi-Compliance PTCA balloon catheter to ensure stent-bearing and improve transport performance, the balloon will tend to increase in the direction of low resistance under high filling pressure, and even expand the tissue outside the lesion, but cannot generate high radial confined expansion pressure.Studies have shown that post-dilation treatment with a non-compliant balloon doubled the rate of good stent release.Currently, post-stent dilatation is recommended for patients with high resistance lesions, such as calcification, severe plaque burden, small vessel disease, significant diameter drop, stent restenosis and high risk of stent thrombosis.

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