5results about How to "Improve occlusion effect" patented technology

The application discloses a preparation method of an alumina aerogel heat insulation felt, and comprises the following steps: adding an aluminum source precursor into a ketone substance to form a precursor solution through sufficient dissolution; adding an alcohol solvent containing a silicon source precursor, an amine substance and a catalyst into the precursor solution to form an alumina sol through uniform stirring; adding a surfactant into the alumina sol to form an alumina sol containing a light shielding agent through uniform stirring; adding light shielding agent particles into the alumina sol to form the alumina sol containing the light shielding agent; immersing a ceramic fiber felt into the alumina sol containing the light shielding agent to perform gel aging, so as to obtain a fiber felt / gel composite; and performing drying and heat treatment on the fiber felt / gel composite, so as to obtain the alumina aerogel heat insulation felt. The alumina aerogel heat insulation felt prepared by the method has the advantages of high temperature resistance, excellent heat insulation performance and good flexibility.

This application relates to the field of interventional surgery for liver cancer and discloses a novel catheter for interventional surgery of liver cancer via the radial artery approach. The catheter includes a connector and two adjusting tubes. The top of the connector is connected to a connecting tube, and one end of the connector is connected to an insertion tube. The center of the insertion tube and the center of the connector are on the same straight line. Several control frames are fixedly installed on the surface of the adjusting tube, and an installation groove is formed in the inner wall of the adjusting tube. One end of each of the two adjusting tubes is fixedly connected to a connecting frame. The inner wall of the installation groove engages with the surface of the insertion tube, and the dimensions of the inner wall of the installation groove are compatible with the dimensions of the insertion tube surface. This application connects the installation grooves in the two adjusting tubes to the surface of the insertion tube, and the control frames are installed on the surface of the adjusting tubes. The two adjusting frames are connected by connecting frames, so that after the entire catheter is removed from the packaging bag, the surface of the insertion tube can be covered by the adjusting tubes, and the adjusting tubes can be easily retracted by moving the control frames.

This invention discloses an adjustable light-transmitting automotive windshield system and automotive product. This invention allows for a reduction in the light transmittance of only the adjustable light-transmitting area unit within the control area, while maintaining a high light transmittance for the adjustable light-transmitting area units outside the control area. This weakens the intensity of strong light sources observed by the driver, reducing glare and discomfort caused by intense light emitted from external light sources, thus improving the driving experience and safety. Furthermore, this invention allows for the blocking of strong light from all directions, improving the ability to block strong light and reducing adverse consequences such as limited driver visibility caused by improper blocking. Moreover, the adjustable light-transmitting automotive windshield system operates without driver intervention, reducing the possibility of driver distraction and ensuring driving safety. This invention has wide applications in the automotive technology field.

This application provides an arc-extinguishing system and a circuit breaker, belonging to the field of electrical equipment technology. The arc-extinguishing system provided in this application includes a stationary contact, an arc-extinguishing chamber, and a stationary cover. The stationary contact includes a fixed part and a contact part connected to each other. The fixed part is connected to the base of the circuit breaker, and the contact part has a guide groove that extends through the contact part. The arc-extinguishing chamber is disposed on the contact part. The stationary cover is disposed on the portion of the contact part that does not contact the arc-extinguishing chamber. A hook and a limiting block are provided on the side of the stationary cover facing the contact part. The hook passes through the guide groove and hooks to the side of the contact part facing away from the stationary cover. The limiting block is located within the guide groove and contacts the groove wall. The stationary cover mentioned in this application can limit the position of the stationary cover in the thickness, length, and width directions of the stationary contact, reducing the probability of changes in the relative position between the stationary cover and the stationary contact. This improves the shielding efficiency of the stationary cover on the contact part, thereby increasing the reliability of the arc-extinguishing system.