5 results about "Syringe filter" patented technology

The utility model discloses an injection type sample filtering device which comprises a fixed seat, a needle cylinder type filter, an injector and a driving part, a first platform and a second platform are arranged on the fixed seat from bottom to top, and the first platform is used for placing a sample collecting container; the needle cylinder type filter is arranged on the second platform; a liquid inlet is formed in the top of the needle cylinder type filter, and a liquid outlet is formed in the bottom; the injector is arranged on the fixed seat and is positioned above the second platform; an outlet of the injector is in butt joint with the liquid inlet; the driving part is arranged on the fixed seat; the driving part is connected with a push rod of the injector and used for vertically pushing the push rod. The syringe and the needle cylinder type filter are fixed, and the push rod is pushed by the driving part with fixed thrust, so that the stability of filtering operation is improved, automatic filtering is realized, manual operation is replaced, and the working efficiency is improved.

The utility model discloses a quick mounting tool for a filter membrane of an injector. The quick mounting tool comprises a base, a lower die and an upper die, first limiting grooves are formed in the opposite inner sides of the first lower module and the first upper module, a plurality of second limiting grooves are formed in the opposite inner sides of the second lower module and the second upper module, the number of the first limiting grooves is the same as that of the first limiting grooves, and the second limiting grooves and the first limiting grooves are in one-to-one correspondence; one end of the lower die is rotationally connected with one end of the upper die; the upper die block I and the upper die block II are fixedly connected together through a connecting plate; a push plate is connected to the connecting plate in a sliding mode, a first groove matched with a lug plate on an injector tube body is formed in the lower end of the push plate, a pull plate is connected to the connecting plate in a sliding mode, and a second groove matched with a pressing plate on an injector rod body is formed in the lower end of the pull plate. According to the utility model, a plurality of piston rods can be pulled out at one time by pulling the pull plate after the syringe filter membranes and the syringes are placed on the lower die and the upper die is closed, and a plurality of syringe filter membranes can be mounted at the same time by pushing the push plate, so that the operation is simple and convenient, and time and labor are saved.

The application relates to an antibacterial adhesive material and application thereof, relates to the technical field of adhesive materials, and solves the problem that the existing adhesive material is not good in function in a wet state environment. The coagulum formed after mixing cationic hydrochloride and anionic small-molecule sodium thioctic acid salt in a buffer solution and centrifugation is prepared through dehydration and solidification; the sodium thioctic acid salt is obtained through the following steps: dissolving sodium hydroxide in deionized water, adding alpha-thioctic acid into the solution in batches under intense stirring, filtering the obtained mixture with a polytetrafluoroethylene syringe filter, and freeze-drying; the cationic hydrochloride is polylysine hydrochloride, polyhexamethylene biguanide hydrochloride or branched polyethyleneimine hydrochloride. The application can be applied to medical antibacterial dressings, tissue adhesives or cultural relic restoration, and the adhesion is activated by physiological saline, a buffer solution or water before use.

The utility model relates to needle cylinder filter technical field, and disclose a kind of anti-toppling rest rack of needle cylinder filter, including frame base: the top of frame base is equipped with fixed frame, the front end of fixed frame is equipped with multiple placing plate, the top of placing plate is equipped with limit cover, the top of placing plate is equipped with several placing grooves, the bottom of limit cover is equipped with several cooperation grooves used in cooperation with placing groove, the both sides of limit cover are fixedly connected with clamping sleeve, the both sides of placing plate are equipped with pressing groove, and the inside of pressing groove is fixedly connected with elastic spring.The anti-toppling rest rack of needle cylinder filter, by installing the limit cover that can be conveniently removed fixed on the surface of placing plate, when needle cylinder filter is stored and placed, it can have stable limiting effect, so that it will not be caused by external collision and cause the toppling of needle cylinder filter, and effectively improve the stability in the process of needle cylinder filter placement.

The utility model discloses a small dose filtration syringe which comprises a needle cylinder, a replacement head and a pressurization assembly, a push rod is arranged in the needle cylinder, and a piston is arranged at the front end of the push rod; an external thread is arranged at the front end of the outer surface of the needle cylinder; the replacing head comprises a sleeve, and an internal thread connected with the external thread in a matched mode is arranged in the sleeve. A filter membrane is fixedly arranged at the front end of the sleeve; the pressurizing assembly is detachably arranged at the rear end of the needle cylinder. The spiral structure is additionally arranged between the front-end empty cylinder and the middle-rear-end empty cylinder of the injector, the water system membrane or the organic system membrane is assembled with the front-end empty cylinder of the injector, breakage and liquid leakage of the joint of a filter head of a traditional injector when the buffer pressure is too large are avoided, meanwhile, only the filter membrane needs to be replaced when different buffers are filtered, and the filter head is convenient to replace. And more materials and time are saved. In addition, a pressurizing assembly is further introduced, so that the operation is more labor-saving and faster.