The tiny PTCA wire is designed to guide the blood vessel to the diseased or blood vessel segment. Once the tip of the device reaches its destination, it acts as a guide, and larger catheters can quickly follow it for easier delivery to the treatment site.
Many main PTCA wires are used to facilitate the placement of balloon dilatation catheters during percutaneous transluminal coronary angioplasty (PTCA) and percutaneous transluminal angioplasty (PTA).
PTCA refers to angioplasty performed in coronary arteries, while PTA refers to angioplasty performed in other arteries.
The PTCA wire has pushability, maneuverability, torque and opacity. Pushability is the force required to advance the PTCA wire. Maneuverability is the ability and responsiveness of the tip of wire to navigate blood vessels. Torque is the operator's response to the wire while the ship is sailing. The opacity is its visibility under the perspective imaging.
Solid steel or nitinol core wire and solid wire wrapped in smaller coils or braids. Coiled or braided wires provide a lot of flexibility, pushability and kink resistance.
Nitinol wire, used alone or braided with stainless steel, helps increase flexibility and allows the PTCA wire to spring back to its original shape after passing through tortuous blood vessel segments. The guide wire usually has a soft tip and a hard body to facilitate the navigation of tip, and the harder part of the guide wire provides good pushability.