33results about How to "Restore patency" patented technology

The invention relates to special mechanical equipment for clearing ice and snow on the road in winter, in particular to a high-efficiency, safe and reliable ice breaking snow clearer, which comprises a tractor head. A front frame is arranged behind the tractor head, and a rear frame is connected with the back of the front frame through a coupler; a first ice breaking snow clearer and a second ice breaking snow clearer are sequentially arranged on the front frame, a third ice breaking snow clearer and a fourth ice breaking snow clearer are sequentially arranged on the rear frame, and four ice breaking snow clearers are provided with ice breaking wheels and a cleaning device; the ice breaking wheels are rolled to break the ice and snow layer on the road, the broken ice and snow are swept to the road side by the cleaning device which is arranged on the back of the ice breaking wheels, and then the broken ice and snow are carried away through a carrier vehicle, or naturally melted; and by using the four ice breaking and snow clearers, the ice and the snow on the road are cleared as much as possible, and the road is clear. The ice breaking snow clearer has the advantages of having high snow clearing efficiency, saving the labor force and reducing the labor intensity of workers.

Disclosed herein are proximally-flaring stents and balloon catheter systems and methods for using the same to restore patency to a side branch and its ostium at a vessel bifurcation, where the side branch can only be approached from the direction of the main artery. The system and methods include a proximally-flaring stent (10) and one or more balloon catheters (250, 400) with inflatable balloons that are able to push a flanged proximal portion (40) of the proximally-flaring stent entirely against the artery walls of the main artery of the side branch so that blood flow is not occluded.

A tissue treatment apparatus for restoring patency in a body vessel is provided. The tissue treatment apparatus includes an elongated catheter dimensioned for insertion within a body vessel having an at least partial occlusion. Proximal and distal expandable segments are mounted to the elongated catheter and are positionable adjacent the occlusion and are configured to transition from a first condition to a second expanded condition. A mesh in operative engagement with the proximal and distal expandable segments is expandable radially outwardly from the catheter upon corresponding transition of the proximal and distal expandable segments to the second condition. The mesh includes a conductive material adapted to transmit electrosurgical energy to treat and facilitate removal of the occlusion, to thereby assist in restoring patency within the body vessel.

Disclosed herein are proximally-flaring stents and balloon catheter systems and methods for using the same to restore patency to a side branch and its ostium at a vessel bifurcation, where the side branch can only be approached from the direction of the main artery. The system and methods include a proximally-flaring stent and one or more balloon catheters with inflatable balloons that are able to push a flanged proximal portion of the proximally-flaring stent entirely against the artery walls of the main artery of the side branch so that blood flow is not occluded.

The invention discloses an automobile tail gas three-way catalytic converter system. The automobile tail gas three-way catalytic converter system is provided with a carrier, a trapping body, an infrared heater, a sensor, a shell, a vibration attenuation layer, an air bypass pipe and a proportion bypass valve. The carrier has a honeycomb ceramic structure, and is arranged at the rear end of the shell; the trapping body is made of a tapping foaming metal material of which the surface is coated with an infrared coating material, and is arranged at the front end of the shell; the infrared heater is embedded at the expansion section of the air inlet of a catalytic converter; at the cold boot stage of an engine, an electronic control unit (ECU) controls the infrared heater to improve the temperature and the catalytic conversion rate of the tail gas; and when the temperature and differential pressure in the catalytic converter reach a certain range, the ECU controls the opening and closing of the infrared heater to promote unburnt products and complex on the trapping body to be gasified, and relieve the blockage condition of the catalytic converter. The system improves the conversion efficiency of the cold boot stage of the engine, traps and eliminates the unburnt products and the complex in the discharged gas and relieves the blockage condition of the catalytic converter, so that the service life of the system is prolonged.

The invention discloses a method for preventing and treating huanglongbing by using a new type of microbial organic fertilizer. By applying the new type of microbial organic fertilizer, the microorganisms in the fertilizer are used to fully decompose the residual pesticides, fertilizers, heavy metals, etc. in the soil, and the developed film is degraded. Phagocytosis turns the heavy metal nutrients in the soil into effective ingredients that can be directly absorbed, and promotes the re-growth and reproduction of the root system of fruit trees. In addition to other auxiliary methods of prevention and control, the purpose of effectively preventing Huanglongbing is achieved.

The invention relates to the automobile maintenance industry, and particularly discloses a three-way cleaning device. According to the adopted technical scheme, the device comprises a tank, wherein a liquid adding assembly, a cyclic cleaning assembly, a liquid discharging assembly and an automatic control system are arranged in the tank; the liquid adding assembly is used for adding a cleaning liquid into a three-way catalyst; the cyclic cleaning assembly is used for cyclically cleaning the three-way catalyst; the liquid discharging assembly is used for discharging a waste liquid generated after the cleaning from the three-way catalyst; the liquid adding assembly, the cyclic cleaning assembly and the liquid discharging assembly are all connected with the automatic control system; and the automatic control system is used for automatically controlling the whole cleaning process. The device provided by the invention has the characteristics that the disassembly is not needed, the operation is convenient and the running is safe.

The invention discloses a reducible uterine tube umbrella mouth implanted type combined birth control device and belongs to the technical field of uterine tube blockage. The device has a key technicalpoint that the device mainly comprises a sack body, wherein one side of the sack body is communicated with a water injection valve through a pipeline and the other side of the sack body is connectedwith a solid metal needle through a traction fixing thread. The device is simple in structure, convenient in installation and use, ideal in birth control effect and good in reducibility, and is used for reducible birth control of the female.