4results about How to "Improve injection effect" patented technology

This application discloses a needle-free injection device, including an outer shell and a rear shell. The first end of the outer shell is detachably connected to a medication tube, and the first end of the rear shell is fitted over the second end of the outer shell. A valve rod is movably mounted inside the outer shell. The first end of the valve rod is connected to the piston rod of the medication tube via a snap-fit ​​structure. The first end of the valve rod also has an anti-leakage structure to prevent medication from entering the medication tube. An injection spring is fitted over the outer side of the valve rod. The two ends of the injection spring abut against a step on the valve rod and the rear shell, respectively, to push the valve rod towards the medication tube. The second end of the valve rod has a locking part, and the rear shell has a self-locking mechanism inside to automatically lock the locking part of the valve rod, achieving pre-tension locking of the injection spring. This device, connected to the medication tube, enables needle-free injection, avoiding the pain and infection risks associated with needle puncture, and improving patient comfort and compliance.

A gate oxide process, first dry oxidation treatment, wet oxidation treatment and second dry oxidation treatment are carried out on the substrate in sequence, so that the silicon-chlorine bond is formed between the third oxide layer and the substrate, compared with only reducing the light doping leakage ion implantation dose and increasing the light doping leakage energy, the hydroxyl introduced by the wet oxidation treatment not only improves the chlorine activity, but also as a transport carrier makes the chlorine efficiently enriched in the new oxide layer, the high concentration of chlorine fills the oxygen vacancies, reduces the bulk trap density, the silicon-chlorine bond formed by the second dry oxidation treatment has a deeper trap energy level, which can reduce the interface state density and improve the device's ability to resist hot carrier damage. Moreover, the hydrogen introduced by the wet oxidation treatment is removed in the second dry oxidation treatment, thereby avoiding the situation that the silicon-hydrogen bond is broken, the hot carrier injection is intensified, and then the degradation chain reaction is triggered, thereby achieving the effect of improving the hot carrier injection effect.

The present application relates to goose breeding vaccination technical field, and disclose a kind of gosling vaccination device for goose farm, including vaccination box, the middle of the vaccination box is equipped with baffle, the baffle divides vaccination box into trapping box and observation box, the side of the trapping box is equipped with trapping entrance, the front of the vaccination box is fixedly connected with feed trough, the front of the vaccination box is equipped with feeding window near the top of feed trough, the middle baffle of the vaccination box is equipped with through opening door hole (105) near feeding window, the front of the vaccination box is equipped with shaft mouth.The present application is attracted by setting trapping box to gosling scattered in outside, so as to avoid the work of operator capture, so that the labor intensity of operator is reduced;By adding feed tank and discharging shaft, continuous sound is generated to attract unvaccinated geese outside the trapping box into the trapping box to eat, thereby enhancing the trapping effect of the device;By adding counter and spring, the effect of gosling vaccination is improved.

The application discloses injectable long-acting collagen and a preparation method and application thereof, and belongs to the technical field of collagen preparation. The application solves the problems of rapid degradation and insufficient mechanical property of collagen after injection into the body, and the problem of inability to have biological safety, good biological activity and injectability. The long-acting collagen is prepared by taking methoxypolyethylene glycol active ester and collagen as raw materials. Amide reaction is caused between the methoxypolyethylene glycol active ester and lysine residues on the collagen, hydrophilic PEG is introduced on the surface of the collagen, a hydration layer is formed, biological enzymes are hindered from contacting the collagen, collagen degradation is delayed, and the single-arm structure of the methoxypolyethylene glycol active ester can avoid product agglomeration and abnormal viscosity caused by excessive cross-linking. The long-acting collagen has a long retention time in the body, has no obvious cytotoxicity, has high biological safety, and maintains cell proliferation, migration and adhesion activity and biological repair functions.