24 results about "Hydrogen Peroxide Sterilization" patented technology

The invention discloses a residual gas treatment device of a hydrogen peroxide sterilizer, and relates to the technical field of gas treatment devices.The residual gas treatment device is technically characterized by comprising a treatment shell, a gas inlet pipe is fixedly connected to one side of the treatment shell, an exhaust pipe is fixedly connected to the upper end of the treatment shell, and a filtering assembly is arranged on one side of the gas inlet pipe; a plurality of catalyst plates distributed in a crossed mode are fixedly connected to the inner wall of the treatment shell, a preheating assembly is fixedly connected to the outer side wall of the treatment shell, the filtering assembly comprises a filtering box, a filtering net is installed on the inner wall of the frame, and a baffle is fixedly connected to one side of the filtering net; a cleaning assembly is arranged on the inner wall of the filter box and located on one side of the filter screen. Residual gas entering the treatment shell is preliminarily filtered through the filtering assembly, impurities such as solid particles in the gas can be effectively intercepted, pore channel blockage and active site loss caused by the fact that the impurities make contact with the catalyst plate are avoided, and it is ensured that the catalyst plate is always kept in an efficient catalysis state.

1. The name of the design product: hydrogen peroxide sterilizer (L200). 2. The use of the design product: for hydrogen peroxide sterilization equipment. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1.

The invention discloses a chemical indicator card for monitoring low-temperature steam formaldehyde sterilization, which belongs to the technical field of medical treatment and public health sterilization monitoring, and is composed of a Tyvek paper carrier and chemical indicator ink mixed by multiple chemicals, and the carrier has the length of 70.4 + / -1mm and the width of 8.8 + / -0.5 mm; the indicating ink can generate controllable color change according to the concentration, temperature and time of formaldehyde sterilization by adjusting the component proportion; the indicator card is matched with a semicircular loading box made of an ABS (Acrylonitrile Butadiene Styrene) material, a polytetrafluoroethylene tube with a specific size is arranged in the box, when the color is successfully changed, 0.9 ml of hydrogen peroxide is injected, and sterilization is carried out for 210 seconds, and when the color is failed, 0.6 ml of hydrogen peroxide is injected at the same temperature at the same time. The indicator card is simple in structure and convenient to use, adapts to PCD scenes, fills up related gaps in China, improves the sterilization monitoring accuracy and provides guarantee for sterilization of lumen type instruments.

The utility model belongs to the technical field of sterilization verification devices, and particularly relates to a universal hydrogen peroxide sterilization chemical verification device, which comprises a tube body, a sealing plug and at least two verification tube groups with different lengths, the sealing plug is sealed and detachably installed at the opening end of the inner cylinder, the shell is tightly and rotatably arranged outside the inner cylinder in a sleeving mode, the verification pipe sets are fixedly connected to the shell, each verification pipe set comprises two thin pipes with the same length, the thin pipes are communicated with the interior of the shell, the two thin pipes are connected to the two ends of the shell respectively, and the two thin pipes are communicated with the interior of the shell. The two ends of the inner cylinder are each provided with a hole channel, and the two hole channels are correspondingly formed in the positions of the two thin pipes of the verification pipe sets on the shell respectively. The verification device can be suitable for lumen instruments with different lengths and structures, the verification device does not need to be replaced, the operation process is simplified, the verification efficiency and accuracy are improved, and the labor intensity of operators is reduced.

The utility model discloses a dry type hydrogen peroxide sterilization system, which belongs to the technical field of sterilization facilities and comprises hydrogen peroxide sterilization equipment and a plurality of humidity sensors in a sterile workshop, and a heater, an evaporator and a dehumidifier are arranged in the hydrogen peroxide sterilization equipment. Gas in the sterile workshop is dehumidified through a dehumidifier, damp and hot gas is exhausted, and liquid hydrogen peroxide is vaporized into VHP gas through an evaporator; the heater is used for preheating the evaporator and providing a heat source for the dehumidifier, so that regeneration of an internal dehumidizer is realized; fresh air is supplemented to the sterile workshop through the fresh air pipe, and pressure balance of the sterile workshop is guaranteed. According to the hydrogen peroxide sterilization equipment, dehumidification can be continuously carried out in the sterilization process through the dehumidifier in the hydrogen peroxide sterilization equipment, the humidity of a sterile workshop is detected in real time through the humidity sensor, and it is guaranteed that the humidity of a space to be sterilized is always lower than a risk value Rh0, so that condensation is avoided, a color steel plate and equipment cannot be corroded, and the service life of the hydrogen peroxide sterilization equipment is prolonged. And the sterilization process is safer and more reliable.

The present invention is of a sterilizer system for providing a steam sterilization cycle and a vaporized hydrogen peroxide sterilization cycle. The sterilizer system features a sterilization chamber for sterilizing at least one item, a system for providing steam sterilization to the sterilization chamber and a system for providing vaporized hydrogen peroxide sterilization to the sterilization chamber. In addition, the present invention is of methods of sterilization of at least one item with a steam sterilization cycle or a vaporized hydrogen peroxide sterilization cycle using the sterilizer system of the present invention.

The present application provides a concentration detection method and system for a hydrogen peroxide sterilization system, which relates to the technical field of hydrogen peroxide concentration detection. The method collects absorbance data at a preset characteristic wavelength during color development, determines the concentration equilibrium constraint when correcting the current concentration in the hydrogen peroxide sterilization chamber through the absorbance data and the conditioned environmental parameters in the sterilization chamber, determines the fitted concentration information between the extreme value change degrees of the multi-salt solution at constant humidity and dew point equilibrium based on the color development mutual interference deviation, synchronously couples the fitted concentration information, and obtains the coupling compensation trend when different concentrations are colored in the hydrogen peroxide sterilization chamber; generates the color development registration index when the equivalent concentration of the hydrogen peroxide solution produces a color development peak offset based on the concentration equilibrium constraint and the coupling compensation trend, and performs a collaborative judgment. The present application can dynamically compensate the color development signal of the hydrogen peroxide solution under the synergistic influence of multiple salt ions and constant humidity and dew point equilibrium to improve the stability of concentration detection in the sterilization chamber.

The utility model discloses a hydrogen peroxide sterilization chemical verification device with multiple detection positions and belongs to the technical field of medical instruments. Which comprises a substrate (2), a resistance pipe is arranged on the surface of the substrate (2), one end of the resistance pipe is communicated with the outside, the other end of the resistance pipe is connected with detection positions, and chemical indicator cards are arranged in the detection positions, and is characterized in that a plurality of detection positions are arranged on the surface of the substrate (2), and the resistance pipe is simultaneously connected with the plurality of detection positions which are arranged at intervals on an extension path of the resistance pipe. According to the hydrogen peroxide sterilization chemical verification device with the multiple detection positions, the multiple spaced detection positions are arranged in the resistance pipe, and the sterilization effects of different sterilization procedures can be verified at the same time, so that the hydrogen peroxide sterilization chemical verification device can meet the requirements of different scenes. The upper shell and the lower shell are made of transparent materials, so that the detection position is designed visually, and the sterilization effect can be judged more visually.

The present application relates to a kind of sterile composite film for hydrogen peroxide sterilization and its preparation method and application.The sterile composite film includes surface layer, nylon layer and polyethylene layer sequentially stacked from outside to inside;The polyethylene layer includes heat-seal layer, intermediate layer and composite layer sequentially arranged from inside to outside;The heat-seal layer includes acidic resin and metallocene polyethylene, and the heat-seal layer is away from the side of intermediate layer as a corona treatment surface.The sterile composite film has excellent interlayer bonding force, good surface wettability, high barrier property, reliable heat-sealability, good yellowing resistance and low odor, and can be well applied to online hydrogen peroxide sterilization.

The invention discloses a preparation method of a microbial standard substance for characterizing the sterilization performance of hydrogen peroxide, and belongs to the technical field of biological detection.The preparation method comprises the following steps that S1, raw materials are selected, specifically, indicator microorganisms, a carrier, modified chitosan, modified mesoporous nano-silica and tannic acid are included; s2, preparing a composite protection solution: dissolving the modified chitosan in a phosphate buffer solution, and adding a tannic acid solution; then adding the modified mesoporous nano silicon dioxide; s3, preparing a spore protection suspension; s4, inoculating and drying the carrier; and S5, packaging and storing. The method solves the problems of inaccurate, unstable and unreliable mass value of the microbial standard substance in the existing hydrogen peroxide sterilization performance evaluation.

The invention provides a hydrogen peroxide cold evaporation sterilization system, which relates to the technical field of hydrogen peroxide sterilization and comprises a liquid storage device, a cold evaporation device, a sterilization bin, a circulating fan and an ionization device. Wherein the liquid storage device is used for storing a hydrogen peroxide solution; the cold evaporation device is connected with the liquid storage device and the compressed air source and is used for atomizing the hydrogen peroxide solution into a dry fog state; the sterilization bin is used for containing to-be-sterilized materials, the air inlet end of the sterilization bin is communicated with the cold evaporation device, and the air outlet end is communicated with the cold evaporation device through the circulating fan to form a circulating air path; the ionization device is at least partially arranged in the sterilization bin and is used for ionizing the hydrogen peroxide in the dry fog state so as to increase the concentration of free radicals. Therefore, the sterilizing agent has the advantages of being capable of compensating free radical decay, improving free radical concentration and being stable in sterilizing effect.

This utility model provides a combined hydrogen peroxide and formaldehyde disinfection device, belonging to the field of disinfection device technology. It includes a chassis, a liquid storage system, and a distribution and transmission system. The liquid storage system comprises two storage tanks: a first storage tank and a second storage tank. The first storage tank contains hydrogen peroxide sterilization solution, and the second storage tank contains formaldehyde solution. Both the first and second vaporization delivery pipes are connected to the air conditioning duct. The beneficial effects of this utility model are: this combined disinfection device integrates two independent vaporization generation systems, combining hydrogen peroxide sterilization and formaldehyde fumigation functions into one. Furthermore, targeting the toxic gases remaining after formaldehyde sterilization, it utilizes the highly reactive hydroxyl radicals (·OH) generated after hydrogen peroxide vaporization to initiate a chain reaction with formaldehyde molecules in the air. This significantly shortens the ventilation and residual formaldehyde removal time after sterilization, reducing the harm to operators and environmental pollution caused by residual formaldehyde.

The application discloses a kind of microbial standard substance preparation methods of characterizing hydrogen peroxide sterilization performance, belong to biological detection technical field, comprising the following steps: S1, raw material selection: including indicating microorganism, carrier, modified chitosan, modified mesoporous nanometer silicon dioxide and tannic acid;S2, preparation composite protective solution: modified chitosan is dissolved in phosphate buffer solution, add tannic acid solution;Again add modified mesoporous nanometer silicon dioxide;S3, preparation spore protection suspension;S4, the inoculation and drying of carrier;S5, packaging and storage;The application solves the problem that microbial standard substance quality value is not accurate, unstable, unreliable in the existing hydrogen peroxide sterilization performance evaluation.

The invention relates to a special storage bag for a platelet-rich plasma preparation device, which belongs to the technical field of biomedicine and comprises an upper bag and a lower bag which are connected through a sealing structure. The bag surface of the upper bag is made of dialyzing paper permeable to sterilization gas, and the upper bag is used for treating contents in the upper bag in a gas permeation sterilization mode; the bag surface of the lower bag is made of a chemical corrosion-resistant polyethylene material and is used for treating the outer part of the lower bag in a hydrogen peroxide sterilization manner; the sealing structure is an openable sealing structure; the upper bag is made of dialyzing paper permeable to sterilizing gas, the lower bag is made of a polyethylene material resistant to chemical corrosion, and an ethylene oxide gas sterilization mode and a hydrogen peroxide sterilization mode are matched respectively, so that synchronous or step-by-step sterile treatment of contents in the upper bag and the outer part of the lower bag is realized; the risk of cross contamination caused by repeated plasma transfer in the traditional preparation process is avoided, the operation process is simplified, and the preparation efficiency is improved.

The utility model discloses a double-layer sealed hydrogen peroxide sterilization cabinet, and relates to the technical field of sterilization equipment. The double-layer sealed hydrogen peroxide sterilization cabinet comprises a sealing box, an outer sealing door, a drawing basket and an inner sealing door, the outer sealing door is connected to the outer side of the sealing box, the drawing basket and the inner sealing door are located on the inner side of the sealing box, the inner sealing door is located on the outer side of the drawing basket, and the outer sealing door comprises a first door plate. The outer side of the first door plate is connected with a first lantern ring. According to the double-layer sealed hydrogen peroxide sterilization cabinet, the outer sealing door and the inner sealing door are arranged, the first sealing ring is clamped to the inner side of the outer sealing door, the second sealing ring is connected to the outer side of the inner sealing door in a sleeving mode, the first sealing ring is used for abutting against the shell for sealing, the second sealing ring is used for abutting against the sterilization box for sealing, and the sterilization box is subjected to double sealing; the sealing effect is good; and sealing is conducted in an abutting mode, abrasion of a sealing piece is greatly reduced, frequent replacement of the sealing ring is avoided, and the use cost is reduced.

1. The name of the design product: dry fog hydrogen peroxide sterilizer (G300). 2. The use of the design product: for dry fog hydrogen peroxide sterilization equipment. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

This invention discloses a CO2 temperature, CO2 concentration, and sterilization control device for multiple isolated culture chambers, comprising: a culture chamber, a gas mixing chamber, a hydrogen peroxide sterilization device, and a pipeline heating device. Multiple isolated culture chambers are arranged within the culture chamber. Each isolated culture chamber is equipped with: a temperature sensor and a CO2 concentration sensor. A controller controls the CO2 gas flow rate supplied by the gas mixing chamber to each isolated culture chamber, thereby controlling the CO2 concentration. Based on the temperature information transmitted by the temperature sensor, the controller controls the heating of each isolated culture chamber, thereby controlling its temperature. Based on received sterilization commands, the controller controls the hydrogen peroxide sterilization device and the pipeline heating device to supply hydrogen peroxide vapor to each isolated culture chamber, thereby sterilizing it. This device ensures that multiple culture chambers can simultaneously perform cell culture without cross-contamination or interference between the cultured cells.

The present invention relates to the field of hydrogen peroxide sterilization technology. To address the problem of the lack of a method for simultaneously controlling and maintaining the hydrogen peroxide concentration and relative saturation in a confined space in the prior art for a long period of time, a method and device for maintaining temperature, hydrogen peroxide gas concentration, and saturation are disclosed. The method comprises dehumidifying the confined space, vaporizing a high-concentration hydrogen peroxide solution, and injecting it into the confined space until the difference between the target concentration and the actual concentration in the confined space is less than 50 ppm, then vaporizing a low-concentration hydrogen peroxide solution and injecting it into the confined space until the difference between the actual relative saturation and the target saturation is less than 2%, and then maintaining the concentration and saturation in the confined space by injecting the high-concentration hydrogen peroxide solution and the low-concentration hydrogen peroxide solution, respectively. This method can regulate and maintain the temperature, hydrogen peroxide concentration, and relative saturation in the confined space for a long period of time, with minimal fluctuations in the concentration and relative saturation during control.

1. The name of the design product: hydrogen peroxide sterilizer (MAX-mini250). 2. The use of the design product: the design product is used for small space disinfection and sterilization such as biological safety cabinet, delivery window, etc. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The present disclosure provides a hydrogen peroxide sterilization sensor and method of use. The sensor includes: at least one thermal indicator component independently selected from an electronic thermal sensor, an irreversible temperature indicator, and a heat-shrinkable film; a reactant-functional porous sorbent in thermal contact (which may or may not be direct physical contact) with the at least one thermal indicator component; and a reactant comprising a material that reacts exothermically with hydrogen peroxide. The reactant is impregnated in the porous sorbent. The method includes: providing a hydrogen peroxide sterilization sensor; allowing hydrogen peroxide to contact the reactant to generate thermal energy sufficient to cause a response from the at least one thermal indicator component; and detecting that conditions for the hydrogen peroxide sterilization have been met.

1. The name of the design product: hydrogen peroxide sterilizer (L500). 2. The use of the design product: for hydrogen peroxide sterilization equipment. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The application discloses a hydrogen peroxide sterilization method, comprising the steps of: calculating the actual flow of a delivery pump according to the actual consumption of hydrogen peroxide obtained by weighing in a container per unit time; obtaining the actual slope K1 of a speed-flow curve of the delivery pump according to the ratio of the actual speed of the delivery pump to the actual flow; obtaining a target flow according to the ratio of a set target consumption of hydrogen peroxide to a set target time; obtaining the target consumption currently lacking according to the difference between the set target consumption of hydrogen peroxide and the actual consumption; obtaining a deviation flow according to the ratio of the target consumption currently lacking to the remaining target time; obtaining a corrected flow by summing the target flow and the deviation flow; obtaining a corrected speed of the delivery pump according to the ratio of the corrected flow to the actual slope K1; and obtaining a corrected slope K2 of the speed-flow curve of the delivery pump according to the ratio of the flow obtained according to the corrected speed to the corrected speed. The hydrogen peroxide sterilization method can be repeatedly performed and can improve the accuracy and stability of injection.

A sensor device having a first electrode and a second electrode. Each of the first electrode and second electrode being electrically coupled to an electrical bridge. The electrical bridge comprises a conductive polymer having a first impedance state and a second impedance state that is different than the first impedance state, and an organic solvent-soluble metal complex.

The invention provides a concentration detection method and system of a hydrogen peroxide sterilization system, and relates to the technical field of hydrogen peroxide concentration detection. Determining the concentration equilibrium constraint when the current concentration in the hydrogen peroxide sterilization cavity is corrected according to the absorbance data and the adjusted environment state parameters in the sterilization cavity; according to the color development mutual interference deviation, determining fitting concentration information between extreme value change degrees of the multi-salt solution when the constant humidity dew point is balanced, and carrying out synchronous coupling on the fitting concentration information to obtain a coupling compensation trend when different concentrations of colors are developed in the hydrogen peroxide sterilization cavity; and according to the concentration equilibrium constraint and the coupling compensation trend, generating a color development registration index when the equivalent concentration of the hydrogen peroxide solution generates color development peak shift, and carrying out collaborative judgment. The device can dynamically compensate the color development signal of the hydrogen peroxide solution under the synergistic effect of multi-salt ions and the balance of the constant-humidity dew point, so that the stability of concentration detection in the sterilization cavity is improved.