Balloon dilatation catheter is a flexible catheter with an inflatable balloon at its head, which is used to expand narrow hollow organs in human body, such as blood vessels, digestive tract, urinary tract, etc. under the guidance of images. Under the condition of no inflation, the balloon catheter enters the target lesion, and after successful treatment, the balloon can be retracted to withdraw the balloon catheter to the outside of the body. Several basic characteristics of vascular dilation balloon are as follows: balloon compliance and dilation force. From the strictest point of view, compliance refers to the change value of volume every time a unit pressure is changed. For most PTA balloon catheters, increasing the pressure length does not change. Therefore, the change of volume is mainly reflected in the change of balloon diameter.

Here is that the content:

• Some related influencing factors

• The pushability of PTA balloon dilatation catheter

Some related influencing factors

Since the introduction of PTA balloon dilatation catheter, the development of polymer science and technology has led to the production of balloons of thin-walled and less compliant materials, including polyethylene (PE), polyethylene terephthalate (PET), nylon and polyurethane. These materials have less compliance than PVC, and are generally suitable for PTA, although polyurethane is the most compliant material. Before reaching the rupture point, the diameter of the non-compliant balloon increased little. Therefore, choosing a balloon with the right size to match the blood vessel can almost guarantee that the blood vessel will not rupture (tear through the wall) during the expansion and shaping of the blood vessel. The balloon itself may rupture when it exceeds the tension limit, while the blood vessel can remain intact. Different balloon materials have different compliance. Besides these special balloon materials, the factors related to compliance and rupture include temperature, expansion times and balloon diameter.

The pushability of PTA balloon dilatation catheter

Although the PTA of the contralateral femoral-popliteal artery, the PTA of the tibial artery, the PTA of the renal artery and viscera, and even the PTA of the intracranial artery all have the problem of pushability. But this question may have been first raised in PTCA, not PTA. A PTCA balloon dilatation catheter with a very small cross-section may not have difficulty in reaching a severe stenosis, but if the catheter has poor pushability, it may not mean that it can pass the stenosis. To solve this problem, manufacturers have now produced catheters with very soft balloon head (guide head) and relatively hard catheter shaft, so that the end can be easily pushed along the guide wire. The longer and smoother the transition zone between the hard part and the soft part, the less likely the catheter is to bend. The pushability of PTA balloon dilatation catheter has changed most of the situations encountered during trans-iliac artery operation and peripheral PTA. In this way, the operator can use the hard part of the guide wire to support the catheter and push the catheter through the lesion. Even in this case, it is helpful to use angioplasty balloon catheter with tapered tip and small cross section. In order to push the catheter through the lesion, it is very important to support the guide wire, which is typical of the pushing technique in recanalization of chronic occlusive iliac artery and PTA stent placement.

In less than 20 years after the appearance of balloon angioplasty, balloon catheter and guide wire technology have been continuously improved according to clinical needs and market competition. Modern PTA balloon dilatation catheter has the characteristics of high pressure, low compliance, limited compliance, small cross section, guiding, pushing and (for some balloons) scratch resistance. If you want to use a PTA balloon dilatation catheter,KOSSEL is definitely a safe choice. Tel:+86-512-8717-4080.