Interventional catheter classification and use

1, stents: the main purpose is to provide support for narrow or occluded blood vessels or lumens, to prevent retraction and remodeling, including vascular stents and luminal (non-vascular) stents and so on.

2, puncture needle: consists of needle sleeve and core, some with occluder. Requirements for sharp needle, smooth cutting edge, moderate thickness.

3, dilator: used to dilate the puncture site of the puncture hole and subcutaneous tissue, to reduce vascular damage.

4, guide wire: also known as guide wire, used to guide the insertion of the catheter, through the catheter to strengthen the hardness of the catheter in order to facilitate the manipulation of the catheter, if necessary, for the exchange of catheters.

5, catheter: is the key equipment, mostly made of plastic. The catheter should have the right hardness, elasticity, flexibility, torque, molding memory, the wall should be smooth. The thickness of the catheter is expressed by the French standard (F number), 1F = 0.355 (0.013 inches), commonly used 5-8F.

6, connecting switches: commonly used two-way and three-way beginning, used to connect the end of the catheter for easy flushing of the catheter and connection with high-pressure syringes.