Abstract: A view definition enhancement system for gastrointestinal endoscope diagnosis and treatment (ESCGV) comprises a washing bottle (1) and a liquid delivery pipe (2) led out from the washing bottle (1). The liquid delivery pipe (2) pumps washing liquid to a liquid inlet system of a gastrointestinal endoscope or an observation window of the gastrointestinal endoscope through a first peristaltic pump (3); and the washing bottle (1) is further provided with a stirring and heating subsystem capable of stirring and heating the washing liquid. A view definition enhancement method for gastrointestinal endoscope diagnosis and treatment comprises steps of: 1) adding the washing liquid into the washing bottle (1); 2) magnetically stirring the washing liquid in the washing bottle (1), and heating the washing liquid at the same time; 3) setting the temperature of the washing liquid to 25-38° C.; and 4) delivering the washing liquid into the observation window of the gastrointestinal endoscope.

Abstract: The multifunctional shoes for walking and skating with single roller mainly include a pulley assembly and the shoe body. The pulley assembly consists of a bracket, a roller, a shaft, pushing rods, springs, pushing rod assembly and fastening bolts. The shaft passes through the center of the roller fixing the roller in the slots of the bracket. The pushing rods and the springs are provided on the top of the bracket with the pushing rod assembly provided in the bracket. The pulley assembly is secured to the shoe by fastening bolts. The pushing rod assembly includes a pushing rod head, a rear connecting plate, springs, connecting bolts of the pushing rods, pushing rods, a front connecting plate and fastening bolts with the pushing rods connecting bolts and pushing rods welded to the front connecting plate while the springs seated on the connecting bolts of the pushing rods. The roller can be extended and retrieved in the direction perpendicular to the ground.

Abstract: An assembly type skateboard-ramp includes several groups of ramp, two sides of which have swallow-tailed tongue and groove joints respectively. The ramp has a curve face and an opposite vertical face. Each group of ramps has same form and gradually decreased size. The swallow-tailed tongues of ramps of a group are inserted in corresponding swallow-tailed grooves of ramps of another group. These skateboard-ramps can be assembled and disassembled.

Abstract: A shoe with elastic sole is disclosed. The shoe comprises an inner sole, an outer sole, an upper, and an elastic sole comprising a U-shaped cavity that has openings at the two lateral sides of the sole and a U-shaped spring pad made of carbon fiber plate provided in the cavity and between the inner sole and outer sole forming a highly elastic sole structure. A U-shaped spring tab is added to the core of the U-shaped portion of the U-shaped spring pad. Alternatively, the openings of the cavity at the two lateral sides of the sole can be closed, forming a totally enclosed cavity structure. Additionally, another U-shaped cavity with a U-shaped spring pad can be provided in the anterior portion of the sole, thus forming a sole structure with U-shaped spring pads both in the anterior and heel portion of the sole. A ventilation structure is provided between the inner sole and the outer sole.

Abstract: The multifunctional shoes for walking and skating with single roller mainly comprise a pulley assembly and the shoe body. The pulley assembly consists of a bracket, a roller, a shaft, pushing rods, springs, pushing rod assembly and fastening bolts. The shaft passes through the center of the roller fixing the roller in the slots of the bracket. The pushing rods and the springs are provided on the top of the bracket with the pushing rod assembly provided in the bracket. The pulley assembly is secured to the shoe by fastening bolts. The pushing rod assembly comprise a pushing rod head, a rear connecting plate, springs, connecting bolts of the pushing rods, pushing rods, a front connecting plate and fastening bolts with the pushing rods connecting bolts and pushing rods welded to the front connecting plate while the springs seated on the connecting bolts of the pushing rods. The roller of the invention can be extended and retrieved in the direction perpendicular to the ground.