6results about How to "Consistent volume" patented technology

The application discloses an integrated safety recycling pen cap for an insulin pen and a use method, and aims to solve the problems of high risk of needle stick injury, poor universality and complicated operation in the process of disassembling and recycling the existing insulin needle. The application comprises a pen cap body, a guide piece and a force relieving piece coaxially arranged in the pen cap body, a pen top component with a top block slidingly connected to the cap top of the pen cap body, a telescopic piece with a reset function arranged between the pen top component and the guide piece, and a reinforcing piece penetrating through the circumference of the pen cap body. The guide piece is an outer equal-diameter cylindrical hole with an inner truncated conical hole structure, and the force relieving piece is an outer truncated conical rotary surface with an inner equal-diameter cylindrical hole structure with an axial anti-skid groove. The application can realize contactless disassembly and recycling of the insulin needle throughout the whole process, is suitable for different specifications of needles, has high structural integration and is easy to operate, and can completely avoid the risk of needle stick injury.

The utility model belongs to reagent filling automation equipment technical field discloses a kind of automatic canning machine for reagent filling, including base frame, index transmission system, filling unit, capping unit and gas-electricity integrated system, base frame is by bottom support cabinet and frame skeleton welding structure, and frame skeleton is layered truss structure;Index transmission system is integrated in base frame, and index transmission system includes feed conveyor belt and coaxial link's circular turntable, the edge of the circular turntable is provided with equal-angle arc limiting slot;The filling unit is fixed on the frame skeleton, and the filling unit includes storage hopper and the multiple-channel filling head connected, the end of the multiple-channel filling head is embedded with pneumatic ration valve, and the valve body of the pneumatic ration valve extends liquid injection pipe below.The utility model structure is strong in rigidity, and anti-vibration stable, and index transmission positioning is accurate, and multiple-channel pneumatic ration filling precision is high and anticorrosion, and vacuum chuck capping is reliable against falling off.

This invention discloses a rotary quantitative metering control method and metering device. The method comprises: m rollers evenly distributed within a housing, where m is a positive integer greater than 1; an elastic hose wrapped around the outer circumference of the rollers, with fluid flowing within the hose; a buffer assembly at the outlet of the elastic hose, pre-stored with fluid; in one metering cycle, the rollers rotate to compress the elastic hose to deliver fluid, with a preset fluid delivery volume of V0, a ​​roller rotation angle of S1, where S1 is a positive integer multiple of (360° ÷ m), and the delivered fluid volume of V1. After one metering delivery cycle, one roller returns to its original position on the housing, ensuring that in any metering cycle, the starting and ending positions of the roller rotation for quantitative fluid delivery are consistent with the origin. If V1 is less than V0, the buffer assembly is compressed to supplement the difference in volume V2, making V0 = V1 + V2. This invention has the advantages of simple control, high metering accuracy, and high filling efficiency.

This utility model relates to the field of medical device manufacturing technology, and in particular to a quantitative injection mechanism and an emergency injection pen including the same. The quantitative injection mechanism includes an activation rod, an inner body, and a PFS assembly. The activation rod is provided with an upper radial extension limiting structure and a lower radial extension limiting structure. The inner body is sleeved around the activation rod, and a radial rebound blocking structure is formed on it. The PFS assembly includes a syringe barrel, a piston, and an injection needle. In the initial state, the upper extension limiting structure and the radial rebound blocking structure are interlocked, restricting the axial displacement freedom of the activation rod, and the piston is in the initial position inside the syringe barrel; when the emergency injection pen is triggered, the upper extension limiting structure and the radial rebound blocking structure are unlocked due to disengagement, and the activation rod moves downward under the action of driving force to push the piston; as the piston slides, the liquid is sprayed out through the injection needle until the lower radial extension limiting structure contacts the syringe barrel.

The utility model relates to a static contact structure and a circuit breaker, and relates to the technical field of circuit breakers. And the static contact structure is used for being matched with the moving contact to realize on-off control. The static contact structure comprises a main contact layer and at least one secondary contact layer. The main contact layer is arranged close to the moving contact. The secondary contact layer is attached to the main contact layer and is arranged on one side, away from the moving contact, of the main contact layer. Wherein the main contact layer and the at least one secondary contact layer are made of different materials. According to the static contact structure provided by the invention, the problem of high cost caused by high requirements of a contact assembly on material performance and an open-current area in the prior art can be solved.

The application belongs to the technical field of PCR reaction chip, and particularly relates to a multiplex PCR reaction chip based on thin film microfluidic technology, which is mainly a chip made of thin film technology and is composed of a non-welding area and a welding area; a channel is arranged in the welding area, a DNA sample pool is arranged on one side of the chip, a PCR enzyme Mix pool is arranged above the middle of the chip, and a PCR premix pool is arranged below the middle of the chip; the DNA sample pool is communicated with the PCR premix pool through the channel; a plurality of PCR reaction pools are arranged on the other side of the chip; a PCR pressure relief pool is arranged outside the PCR reaction pool and is communicated with the corresponding PCR reaction pool; the liquid inlet speed is adjusted by adjusting the width of the flow channel, so that the simultaneous injection is achieved; the multiplex PCR amplification detection is realized in the thin film microfluidic chip; and the actual use demand of simultaneously filling different PCR reaction chambers under the non-equal path condition is achieved.