17 results about "Liquid plasma" patented technology

The invention discloses a method for widening keratinized gingiva by using a plasma matrix membrane and a preparation method of the plasma matrix membrane, and the method comprises the following steps: determining an expected widening position of the keratinized gingiva based on preoperative CBCT and intraoral scanning data of a patient; root-direction valve reduction is carried out in the area to be widened, and local original keratinized gingiva with the width of 1-2 mm is reserved; preparing a solid plasma matrix and a liquid plasma matrix by adopting a horizontal centrifugal mode, and preparing the plasma matrix membrane by utilizing a plasma matrix pressurizer; and sewing and fixing the obtained plasma matrix membrane in the to-be-widened area. According to the novel operation mode for widening the keratinized gingiva through the plasma matrix, it can be avoided that a second operation area is opened up to obtain an autograft, the postoperative reaction of a patient is reduced, and the economic burden of the patient is relieved; compared with a finished collagen matrix material, the plasma matrix contains autologous bioactive cells and factors and has a better regeneration promoting function.

To provide a plasma generating mechanism capable of supplying a plasma raw material at low cost, and having high durability, and a light source apparatus.SOLUTION: A plasma generating mechanism includes a rotor, a rotation driving source, a reservoir, a heating part, and a raw material supplying part. The rotor rotates around a rotation axis. The rotation driving source rotates the rotor around the rotation axis. The reservoir reserves a liquid plasma raw material, and is immersed in the liquid plasma raw material in which a part of the rotor is reserved. The heating part heats the liquid plasma raw material reserved in the reservoir. The raw material supplying part has a raw material introduction path for passing a solid plasma raw material which is a plasma raw material in a solid state, and a raw material supplying port provided at the raw material supplying path, unable to pass the solid plasma raw material, but capable of passing the liquid plasma raw material obtained by melting the solid plasma raw material, wherein the liquid plasma raw material passing through the raw material supplying port flows in.SELECTED DRAWING: Figure 4

Provided are: a plasma generation mechanism for which the cost of supplying a plasma raw material is low, and which is highly durable; and a light source device.　A plasma generation mechanism according to one embodiment of the present invention is provided with a rotor, a rotary drive source, a storage chamber, a heating unit, and a raw material supply unit. The rotor rotates around a rotating shaft. The rotary drive source causes the rotor to turn around the rotating shaft. The storage chamber stores a liquid plasma raw material, and a part of the rotor is immersed in the stored liquid plasma raw material. The heating unit heats the liquid plasma raw material stored in the storage chamber. The raw material supply unit comprises: a raw material introduction path through which a solid plasma raw material that is the plasma raw material in a solid state passes; and a raw material supply port which is provided to the raw material introduction path, and through which the solid plasma raw material cannot pass but a liquid plasma raw material, resulting from the melting of the solid plasma raw material, can pass. The liquid plasma raw material that has passed through the raw material supply port flows into the storage chamber.

The invention relates to a modified plasma matrix material as well as a preparation method and application thereof, and the preparation method comprises the following steps: mixing osteoblast extracellular vesicles with a liquid plasma matrix, standing and pressing to obtain the modified plasma matrix material. The prepared modified plasma matrix material can slowly release osteoblast extracellular vesicles, promote osteogenesis mineralization in the vesicles, promote spontaneous mineralization in the plasma matrix and accelerate the bone regeneration process, has the effects of promoting cell proliferation, migration and osteogenesis differentiation, can be used for bone defect repair, and has a good application prospect. The problem of poor osteogenic activity of a common plasma matrix is solved, and a more effective clinical application scheme is provided for bone regeneration.

The invention relates to the technical field of biomedical materials, in particular to plasma matrix gel as well as a preparation method and application thereof. The preparation method comprises the following steps: centrifuging a whole blood sample in an environment containing negative oxygen ions to obtain the plasma matrix gel; or, the preparation method comprises the following steps: incubating the liquid plasma matrix in an environment containing negative oxygen ions to obtain the plasma matrix gel. According to the preparation method provided by the invention, the whole blood or liquid plasma matrix is treated in the negative oxygen ion environment, a platelet surface receptor mediated calcium signal channel can be efficiently activated, an endogenous blood coagulation cascade reaction is triggered to form the stable three-dimensional fibrin gel, the preparation method is simple and convenient to operate, and the preparation method is suitable for industrial production. The preparation method has the advantages that the addition of exogenous thrombin is completely avoided, the immunogenicity risk is avoided, the requirement on the material of the tube for preparing the plasma matrix is reduced, and a new solution is provided for the preparation of the plasma matrix gel.

The utility model relates to a liquid plasma activating treatment device which mainly comprises a containing cavity and a plasma discharging structure, and the containing cavity is of a hollow cylindrical structure and is used for containing a liquid container; the plasma discharge structure is arranged on the inner wall of the accommodating cavity; the high-voltage line interface connects the plasma discharge structure and the high-voltage pulse power supply. The device adopts a non-contact activation design, takes the tube wall of a liquid container as a dielectric barrier layer, and generates plasma through dielectric barrier discharge, so that active components penetrate through the tube wall to act on internal liquid, and direct contact between an electrode and the liquid is avoided. A limiter is arranged at the bottom of the containing cavity and can adjust the position of the liquid container to control the liquid level. The device can further comprise a liquid level sensor, a temperature sensor, a temperature control component, a gas circulation path and a control system, and accurate control over the liquid level height, the treatment temperature and the gas environment is achieved. And by arranging a plurality of parallel containing cavities, the device can also realize high-throughput treatment.

A composition comprising a liquid plasma according to the present invention can induce growth inhibition and death of brain tumor cells through the combined effect of radicals, ionic species, and pH effect, and thus can be effectively used for preventing or treating brain tumors. In addition, the present invention is a non-invasive physical and chemical treatment approach with low drug dependence, can exhibit a synergistic effect when used in combination with existing anticancer drugs, and has a high potential for application to the treatment of various nervous system tumors or metastatic brain diseases including glioblastoma and auditory nerve tumors.

The invention provides a plasma matrix bone block and a preparation method and application thereof, and belongs to the technical field of biomedical materials. The preparation method comprises the following steps: obtaining a liquid plasma matrix and a buffy coat, placing the liquid plasma matrix and the buffy coat together with bone substitute material particles in a solid plasma matrix blood collection tube, carrying out rotary oscillation, and solidifying to obtain a plasma matrix bone block precursor; the plasma matrix bone block precursor is placed in a mold, a pressurizing gasket is placed at a sample inlet of the mold, the plasma matrix bone block precursor is compressed and shaped through centrifugation, and the plasma matrix bone block is obtained. Compared with a traditional plasma matrix bone block, the plasma matrix bone block provided by the invention is higher in mechanical strength and slower in degradation rate, and has more advantages in the aspect of promoting bone defect repair; and the preparation method is simple and has strong repeatability.

The present application relates to terephthalic acid hydrorefining catalyst preparation technical field, specifically to a kind of preparation and application of supported palladium catalyst of plasma cooperation.This application overcomes the problems that active component of supported palladium catalyst is easy to agglomerate, poor in anti-poisoning ability and metal is easy to peel off and deactivate under high temperature environment.By liquid plasma, surface energy excitation is carried out on non-carbon carrier, and nano-defects with quantum trap effect are constructed;Then, using polyethyleneimine or phytic acid and other bifunctional organic ligand chelate palladium precursor solution, combined with ultrafast joule heat pulse flash process, ligand is induced to carbonize in situ on metal surface;Finally, assisted by plasma directional crystal face induced reduction;The dispersion of active center is effectively improved, the space confinement and shape selection shielding of active site are realized, the metal loss rate and the residual amount of carboxybenzaldehyde are reduced, and the anti-poisoning performance and service life of the catalyst under industrial conditions are enhanced.

The application relates to the technical field of liquid-phase plasma sterilization, and particularly discloses a liquid-phase plasma sterilization system, a control method thereof and a cleaning device.The sterilization system comprises a disinfectant water preparation device, a liquid level detection device and a control module.The disinfectant water preparation device comprises a liquid storage structure and a plasma generation unit.The liquid level detection device comprises a float and a first liquid level detection mechanism.The first liquid level detection mechanism comprises multiple first sensing components arranged in sequence along the height direction of the liquid storage structure.The multiple first sensing components are distributed on the upper and lower sides of a preset water inlet level.When the water in the liquid storage structure reaches the water inlet level, the multiple first sensing components can all trigger the float and generate sensing signals.The application can judge whether the liquid storage structure reaches the preset water inlet level through the sensing signals of the multiple first sensing components during the water inlet process, can reduce errors, improve the detection accuracy, and can effectively avoid the problems of large detection errors and low precision of a single sensing component.

The application discloses a kind of plasma device and its use method for processing liquid, it is related to plasma processing equipment technical field, the processing liquid plasma device of the present application includes reactor, micro-bubble generating unit and gas compression assembly, reactor is equipped with the reaction cavity for liquid flow;Micro-bubble generating unit is below the reactor, and is communicated reaction cavity, micro-bubble generating unit is used to provide bubble to reaction cavity;Gas compression assembly includes gas compression disc and drive mechanism connected with gas compression disc, gas compression disc is movably arranged in reaction cavity, and drive mechanism is used to drive gas compression disc to move along the height direction of reactor, to control the flow speed of bubble.The application can control the up-moving speed of bubble, make bubble evenly distributed in liquid, guarantee the processing effect of subsequent plasma discharge processing to liquid.

The invention relates to a liquid plasma activating treatment method and device. The method comprises the steps that liquid to be treated is sealed in a container, gas containing oxygen and nitrogen is introduced, the liquid level is controlled to be located below the plasma discharge structure by adjusting the limiting stopper, and activation treatment is conducted by means of plasma generated through dielectric barrier discharge. The device adopts a multi-accommodating-cavity parallel processing structure, is equipped with a limiter to accurately adjust the liquid level position, and integrates a power supply module, a control module and a temperature control system to realize high-flux and non-contact activation. The method is suitable for treating platelet-rich plasma, promotes platelet to release growth factors by increasing the concentration of active oxygen and active nitrogen components, and enhances the biological activity of the platelet. According to the scheme, the problems of complicated operation, pollution risk and low automation degree in the prior art are solved.

The invention discloses a continuously prepared high-performance ScYSZ thermal barrier coating with a double-gradient structure and a preparation method thereof, and the preparation method comprises the following steps: preparing an ScYSZ layered structure layer on a high-temperature alloy matrix by using agglomerated ScYSZ ceramic powder by adopting a supersonic plasma spraying process; carrying out ball milling on the nanocrystalline scandium-yttrium co-stable zirconia ceramic powder and absolute ethyl alcohol containing a dispersing agent to obtain suspension liquid; and preparing a vertical crack structure layer on the ScYSZ layered structure layer by using the suspension liquid through a supersonic speed suspension liquid plasma spraying process, so as to form the high-performance ScYSZ thermal barrier coating with a double-gradient structure. The nano structure in the ScYSZ coating containing the layered structure can greatly reduce the heat conductivity of the coating, so that the heat insulation effect of the coating is further enhanced; and the stress damage tolerance of the coating is increased through the ScYSZ coating with the vertical crack structure, thermal stress accumulation of the coating under the cold and hot alternating cycle service condition is reduced, and thermal stress is easy to release.

An apparatus for treating a substrate includes a support unit that supports the substrate and a nozzle that dispenses liquid plasma to etch a film formed on the substrate supported on the support unit.

Provided are a plasma generation mechanism and a light source device which are capable of suppressing defects caused by debris that occur due to plasma generation.　A plasma generation mechanism according to an embodiment of the present invention is a plasma generation mechanism of a light source device that converts a liquid plasma raw material into plasma as a result of irradiation with an energy beam and that extracts radiation. Said plasma generation mechanism is provided with a rotating body, a rotation drive source, a raw material supply unit, and a debris reflection surface. The rotating body has a rotating surface which is a surface that rotates about a rotation axis. The rotation drive source rotates the rotating body about the rotation axis. The raw material supply unit supplies the plasma raw material to the rotating body. The debris reflection surface is located in a normal direction of an irradiation position irradiated with the energy beam, and reflects, in a direction different from the incidence path of the energy beam to the irradiation position, debris incident from the irradiation position.

The in-liquid plasma processing apparatus includes a processing space and an active species supply unit capable of supplying in-liquid plasma to the processing space. The active species supply unit includes: a generation space into which a liquid can be introduced; a shower plate capable of introducing an active species contained in the plasma in the liquid generated in the generation space into the processing space, the shower plate having a plurality of shower holes arranged so as to be dispersed along the processing space; and a microwave supply unit including a radial line slot antenna having a plurality of slots arranged so as to be dispersed along the generation space. The microwave supply unit can supply microwaves to the liquid in the generation space via the radial line slot antenna.

The invention discloses a liquid-phase plasma processing device and method based on a floating discharge tool. The floating tool is made of a flexible conductive material and is electrically connected with an adjustable voltage source through a conductive bearing. A workpiece to be machined is fixed on the workpiece base, and then the adjustable voltage source is grounded, so that a loop is formed between the floating discharge tool and the workpiece. The floating discharge tool elastically deforms and retreats through fluid dynamic pressure generated by rotation of the main shaft, the position of the air floating guide rail is dynamically adjusted, the thickness of a liquid film is kept unchanged, and stable material removal with sub-nanometer precision is achieved. Then an adjustable voltage source is used for enabling a floating discharge tool to conduct confinement plasma discharge in a liquid film gap, the synergistic effect of catalytic nano-particles in the polishing solution is stimulated along with the action of a photoelectric field generated through discharge, strong-oxidizing-property free radical groups are generated, atoms on the surface of a workpiece are subjected to confinement oxidation, the material hardness is reduced, and the material removal rate is increased; therefore, the method has the capabilities of efficient processing and sub-nanometer surface shape precision control.