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117results about How to "Resistance to penetration" patented technology

Apparatus and method for shielding tissue during tumor ablation

The present invention provides improved methods, systems, and kits for protecting body tissues which are adjacent to tissues undergoing thermal treatment. Thermal treatment is often prescribed for tumors and other disease conditions within body organs and other tissue masses. The methods, systems, and kits are particularly useful for treating tumors which lie at or near the surface of an organ, such as the kidney, pancreas, stomach, spleen, and particularly the liver. One risk of treating such tumors is the possibility of mistargeting the tumor and penetrating a delivery cannula or portions of a treatment device beyond the surface into the adjacent tissues or organs. In the case of radiofrequency or electrosurgical treatment, healthy surrounding tissue may be directly ablated. An additional risk, present even when the tumor is correctly targeted, is the possibility of thermal damage to the surrounding, non-targeted tissue. In radiofrequency or electrosurgical treatment, heat may dissipate into surrounding tissues which are more fragile and heat sensitive than the tissue in the organ being treated, thus causing unwanted tissue damage. These risks and others may be lessened or avoided with the use of an interface shield between the target region and adjacent body tissues to shield surrounding organs and tissue from treatment effects.
Owner:BOSTON SCI SCIMED INC

Prefabricated shear wall in cast-in-situ connection mode

The invention relates to a prefabricated shear wall in a cast-in-situ connection mode. The prefabricated shear wall comprises a wall, pier heads, bottom upper concave sections and a bottom outer side plate. Side edges are respectively arranged on two sides of the wall, and a groove is formed in the middle of each side edge and is vertically perforated through the wall; wall vertical reinforcing bars are arranged in the wall; the bottom upper concave sections are uniformly distributed at the bottom of the wall; each pier head is arranged between the two corresponding adjacent bottom upper concave sections; air holes are formed in positions above the middles of the bottom upper concave sections; the air holes are communicated with the bottom upper concave sections via pipelines; the thicknesses of the pier heads are identical to the thickness of the wall, and holes are formed in the pier heads; the bottom outer side plate and the wall are integrated with each other, and the bottom outer side plate is positioned on the outer sides of the bottom upper concave sections; internally threaded pipes are embedded in positions close to the side edges of the wall, above the bottom upper concave sections and on the pier heads. The prefabricated shear wall in the cast-in-situ connection mode has the diversified advantages of firm structure, convenience in construction, reliability in connection and the like.
Owner:华汇工程设计集团股份有限公司

Alumina electric furnace cover and preparation method thereof

The invention aims to provide an alumina electric furnace cover, which is high in thermal shock resistance, density and iron slag erosion resistance and long in service life. The alumina electric furnace cover comprises the following components in percentage by weight: 5 to 20 percent of 88 homogenized alumina particles, 8 to 35 percent of electrofused low-carbon brown aluminum oxide particles, 10 to 25 percent of electrofused mullite particles, 10 to 15 percent of andalusite particles, 10 to 15 percent of electrofused white corundum fine powder, 3 to 5 percent of alpha-Al2O3 micro powder, 2.5 to 7 percent of calcium aluminate cement, 1 to 2 percent of explosion-proof fibers, 2 to 4 percent of reinforced heat-resistant steel fibers, 2 to 4 percent of silicon dioxide micro powder and 2 to 5 percent of chromium oxide. A preparation method comprises the following steps of uniformly mixing the electrofused white corundum fine powder, the alpha-Al2O3 micro powder, the silicon dioxide micro powder and the explosion-proof fibers; adding the electrofused mullite particles and the andalusite particles, stirring the mixture for at least 3min, adding the other raw materials, and stirring the mixture for at least 8min; adding water and a water reducing agent, performing stirring and casting molding, and performing natural curing, de-molding and drying.
Owner:北京利尔高温材料股份有限公司
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