EGR Valve Implantation

EGR valves, which are used to control the exhaust gas recirculation, are a part of the emissions control system in a car. This allows the engine to produce the desired amount of exhaust gases while maintaining the oxygen intake of the engine. This helps to lower the combustion temperature of the cylinder and reduce the production of harmful oxides of nitrogen.

There are three main types of EGR valves. The first type is a vacuum-controlled unit. It has an electronic vacuum-controlled valve and a digital-controlled valve. The second type is an EVR valve. It is an electronic controlled digital valve, which includes an extended sealing skirt. The third type is a hot gas bypass EGR valve. It has a smaller insertion profile and a cylindrical shape on the lower part.

The implantation depth was 5.3 mm for the CV and 4.0 mm for the EVR. The insertion sheath had an 18F outer diameter, which was slightly smaller than the 22F for the CV sheath. The evr valve smaller sheath was associated with less vascular complications.

The rate of mild paravalvular regurgitation was significantly lower in the EVR group. In addition, the rate of aortic regurgitation was similar in both groups. The incidence of pulmonary artery pressure was also similar. However, the incidence of residual more than mild aortic regurgitation was significantly higher in the CV group. This has been reported to have a significant effect on patient prognosis.

The new generation of EVR prosthesis features a delivery system with an extended sealing skirt to prevent leaks. This improved the device’s performance and increased its success. Moreover, the smaller insertion profile allowed for transfemoral treatment in patients with challenging iliofemoral vessel anatomy.

The EVR’s radial force was also significantly improved. This allows the implantation of the valve to be positioned at the correct anatomic location. There were no procedural deaths, but 12.1% of the CV-treated patients suffered from vascular complications. A covered stent was inserted in all cases.

The 2nd generation of EVR valves, which is a new design, also features an extended sealing skirt and more consistent radial forces. Compared to the 1st generation, this valve has reduced the incidence of paravalvular leaks.

The Medtronic EVR bioprosthesis is designed to improve the quality of life for patients. Its unique radial forces and a longer sealing skirt minimize the risk of paravalvular leaks and dysfunction. In addition, the prosthesis is designed to allow for precise implantation at the correct position. It is also lower in height and has a low implantation depth.

The HELLA EGR valves are marketed worldwide and cover almost 15 million motor vehicles in Europe. They are manufactured according to strict quality standards. These EGR valves are widely used in the automotive industry because they provide excellent performance and reduced emissions. These valves are easy to use and have a relatively short life span. A simple service kit is available for these valves.

EGR valves help to reduce the harmful emission of nitrogen oxides, but they can also cause problems. The valve can become clogged with carbon particles, which may lead to poor performance or engine damage. To avoid these problems, it is important to clean or replace the valve. There are dedicated cleaning products available in the aftermarket.