52results about How to "Fully circulated" patented technology

There is provided a injector in which a backstop function is realized by a collar part at a position situated away from a gasket in the direction of the side of the proximal end and adequate sterilization can be carried out, with a plunger rod (in which the collar part is formed) assembled, while aiming to secure airtightness. (A backstop function is realized by means of a collar part at a position situated away from the gasket in the direction of the side of the proximal end, thereby providing a injector capable of being adequately sterilized with a plunger rod (in which the collar part is formed) assembled, while aiming to secure airtightness.) A gasket (3) is inserted from a proximal end opening (22) of a barrel (2). Next, a plunger rod (4) is inserted as to establish connection of its distal end and the gasket (3). Then, a finger grip (5) is mounted to a flange (23). A disc part (45) is formed at a position situated away, in the direction of the side of the proximal end, from the gasket, thereby making it possible for the disc part (45) to abut and stop against an aperture edge (521) of the finger grip. There is formed in an outer peripheral edge part of the disc part (45) a communication opening part (451) having a concave shape. At the time of sterilization with hydrogen peroxide gas, the hydrogen peroxide gas which has flowed into an open space (26) from the proximal end opening is permitted to circulate in a semi-hermetically closed space (25) by way of the communication opening part.

The invention discloses a hydrogen sensor with a ppb-level detection lower limit, which belongs to the technical field of sensors. The hydrogen sensor includes an oxidized metal foam and palladium nanoparticles loaded on the oxidized metal foam, wherein the particle size of the palladium nanoparticles is 5-10 nm, and the oxidized metal foam is made by heating the metal foam in an air atmosphere at a high temperature Obtained by heat treatment, the heat treatment temperature is 500-1000° C., and the time is 3-6 hours. The present invention fully oxidizes the metal foam at a certain temperature to obtain a large number of insulating metal oxide nano-wrinkles on the surface of the metal foam. The oxidized metal foam substrate has a larger surface area to adhere to Pd nanoparticles; The hydrogen reaction will generate incompletely reversible β-phase Pd-H compounds. For the first time, a method of activating the hydrogen sensor with high-concentration hydrogen is proposed, and the stable ppb-level hydrogen sensing performance of the hydrogen sensor is realized.