7results about How to "Control release" patented technology

This invention discloses a method for constructing a biological model of tertiary lymphoid structures, which can rapidly and efficiently induce the generation of in situ TLS, without relying on specific tissues or organs, and without the need for complex and expensive preparation processes such as cell editing and transgenic mice. It can generate stable, mature, and long-lasting TLS structures within 2 to 3 weeks, and has the characteristics of short cycle, low cost, simple operation, reproducibility, safety and effectiveness.

This invention provides a dressing containing Ligusticum striatum microspheres and its preparation method, to solve the problem of safe and precise application of Ligusticum striatum extract or Ligustrazine in difficult-to-heal wounds; the dressing containing Ligusticum striatum microspheres and its preparation method, wherein the dressing is composed of Ligusticum striatum microspheres loaded with pHEMA hydrogel as the main body, wherein the Ligusticum striatum microspheres are formed by coating Ligusticum striatum extract or Ligustrazine with PLGA, and the pHEMA hydrogel partially encapsulates the Ligusticum striatum microspheres.

The utility model discloses an inflator for inflating product belongs to inflating device technical field, and it includes the cylinder, the inflator and the piston structure. Its innovation lies in setting up the oil absorption cotton structure, and this oil absorption cotton can be installed in two positions: one is on the piston structure, and specifically can be set in the positioning groove of piston or the annular groove specially, is located the rubber ring inside, two is the bottom of the cylinder. The piston structure includes the support disc with the positioning groove and the annular groove and the rubber ring with the inverted L type section. The oil absorption cotton can be annular or circular, and can be provided with tail strip to facilitate replacement. The utility model prolongs the service life of inflator, improves the inflating cleanliness through the effective adsorption and slow -release lubricating oil of oil absorption cotton, reduces the friction wear and oil spill, is especially suitable for the product such as inflating toy.

The present application relates to the technical field of medical devices, in particular to a wound debridement device for blood tumor patients, comprising a handle vertically arranged, an injection part, an adsorption part and a mounting part for clamping medical cotton, the lower end of the handle is provided with a placing cavity, the mounting part is arranged in the placing cavity, the injection part comprises a first cylindrical cavity, a first button, a vertical slide and a first flow channel arranged in the handle, the mounting part comprises a fixing block arranged in the placing cavity and detachably connected with the handle, when the medical cotton is clamped on the handle by the fixing block, part of the medical cotton extends out of the lower end of the handle through the center hole of the fixing block, and the adsorption part comprises a second cylindrical cavity, a second button and an adsorption channel arranged vertically. The present application is simple and fast in operation when debriding the wound of the patient, greatly shortens the debridement time and reduces the labor intensity of medical staff, simultaneously reduces the time of exposing the wound of the patient to the outside, reduces the risk of wound infection and improves the wound healing speed.

The application relates to the technical field of supramolecules, in particular to a pillar[n]arene derivative-DCOIT slow-release supramolecular self-assembly body, application and a preparation method. The supramolecular self-assembly body loads DCOIT by taking a pillar[n]arene derivative as a molecular carrier; the pillar[n]arene serving as the carrier can form a supramolecular assembly body with DCOIT through hydrogen bond interaction between pi and CH2, the host-guest complexation of the two is strong, and the pillar[n]arene derivative can effectively control the slow release of DCOIT; the supramolecular self-assembly body is good in safety and stability, low in cost, beneficial to industrialized production, and wide in application field; the method is simple in operation, low in preparation cost, easy to realize, and beneficial to industrial promotion.

The application relates to the field of agricultural cultivation and fertilization technology, in particular to a small-terrain handheld agricultural cultivation and fertilization device, which comprises a fertilization device component group, the fertilization device component group is used for fertilization, the fertilization device component group comprises a fertilization main pipe assembly, a fertilizer discharging assembly and a control amount assembly, the fertilization main pipe assembly is used for conveying fertilizer, the fertilization main pipe assembly comprises an upper pipe, and a middle pipe is connected to one end of the upper pipe. The existence of the shovel body can block the soil, the soil cannot be in contact with the fertilizer discharging port structure, the shovel body can guarantee opening and closing to enable the fertilizer to enter the soil, the soil cannot block the fertilizer discharging port position, and the efficiency of discharging the fertilizer by the fertilizer discharging port can be guaranteed during long-term work.

This invention discloses a method for preparing and applying an intercalated montmorillonite / nanocellulose gel packaging film with preservation and monitoring functions. It belongs to the field of packaging materials. This invention uses an ultrasonic-assisted method to insert lithium saponite between montmorillonite layers. Using lithium saponite-intercalated montmorillonite as a template and ascorbic acid as a reducing agent, a lithium saponite-intercalated montmorillonite immobilized nano-copper composite antibacterial agent is prepared. Then, using nanocellulose as a matrix, anthocyanins are added as an indicator and mixed with the immobilized nano-copper antibacterial agent. The resulting intercalated montmorillonite / nanocellulose gel film packaging with preservation and monitoring functions is prepared through a "double drying" technique. When applied to food storage packaging, the lithium saponite-montmorillonite-nanocopper structure exhibits long-lasting antibacterial activity, while the anthocyanins provide an indicator function for monitoring food freshness.