What are the classifications of medical catheters

<p>There are many types of <a href="https://www.hondemedical.com/medical-catheter" rel="noopener noreferrer" target="_blank">medical catheter</a>&nbsp;with different materials. According to the structure and function characteristics, catheters are divided into two types: ordinary catheters and special catheters. The sheaths and intraluminal stents used with the catheters are matched.</p><p><br></p><p><strong>1. Ordinary catheter</strong></p><p>An ordinary catheter is a plastic tube with a certain length, the front end is tapered to facilitate insertion into the blood vessel; the back is the same as the end of the injection needle to facilitate connection with the syringe. The anterior segment of the ordinary catheter has a variety of shapes, such as single arc, reverse arc, double arc, enhanced double arc, liver arc front view, liver arc side view, three arcs, etc., to facilitate insertion of blood vessels in different parts. The specifications of catheters are often expressed by the F number, such as 6F or 7F. The F number is equal to the number of millimeters of the outer circumference of the catheter. Baihe Medical produces medical catheters of various specifications and is a "China Central Venous Catheter, Hemodialysis Catheter Production/Export Demonstration Enterprise ".</p><p><br></p><p><strong>2. Special catheter</strong></p><p>The shape and structure of special catheters are relatively complex, and the medical functions performed are also diverse. Special catheters include the following.</p><p><br></p><p>Balloon catheter</p><p>Balloon catheters are the most widely used catheters, including ordinary double-lumen single-balloon catheters, double-lumen double-lobe balloon catheters, double-lumen three-lobe balloon catheters, double-lumen single-balloon catheters, and four-lumen double-balloon catheters (Balloon catheter for carotid angioplasty), detachable balloon catheter, calibrated leakage balloon catheter, balloon catheter for coronary angioplasty, rapid exchange balloon catheter (monorailballoon catheter) ), balloon on wire catheter (balloon on wire catheter), balloon on a wire system with fixed guide wire at the tip, combined tandem balloon catheter (three-lumen double balloon), perfusion balloon catheter , Laser balloon catheter and radio frequency thermal balloon catheter, etc.</p><p><br></p><p>Other catheters</p><p>Some other commonly used catheters include guiding catheters, coaxial catheters, micro catheters, controllable direction catheters, atrial septal incision catheters, blood clot capture catheters, and rotary plaque catheters. ), atherectomy catheters, mapping electrode catheters, radiofrequency ablation catheters (also known as large-tip catheters) and pacing electrode catheters. Among them, coronary artery angioplasty (PTCA) catheter is an important type of catheter, including PTCA guiding catheter (PTCA guiding catheter), PTCA dilatation catheter (PTCA dilatation catheter) and guide wire. The wall of the guide catheter is divided into three layers: the outer layer is polyurethane or polyethylene, the guard layer is epoxy resin-fiber mesh or metal mesh, and the inner layer is smooth Teflon.</p><p><br></p><p>Sheath</p><p>The sheath is also called the catheter sheath, which is mainly used to guide catheters, balloon catheters or other intravascular devices into the blood vessel smoothly. The sheath is composed of an outer sheath, a dilator and a short guide wire. The sheath is divided into four types: ordinary sheath, Check-Flo sheath, peel-Way sheath and long sheath.</p><p><br></p><p>Intraluminal stent</p><p>Endoluminal stent (ES) is developed on the basis of balloon angioplasty, which can solve the problems of intimal damage and elastic retraction caused by balloon expansion. Intraluminal stents include self-expanding stents (sself-expanding ES), balloon expandable stents (balloonexpandable ES), thermal memory stents (thermal memory ES), and recyclable stents.</p>