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5264 results about "Treatment time" patented technology
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Medical treatment system with energy delivery device for limiting reuse
InactiveUS7118564B2Without disabling functionalityControlling energy of instrumentEye treatmentClosed loopLaser surgery
Owner:CILAG GMBH INT
Alarm suspend system
ActiveUS8203438B2Faster treatment timeShort treatment timeElectric/electromagnetic visible signallingDiagnostic recording/measuringEngineeringVisual perception
An alarm suspend system utilizes an alarm trigger responsive to physiological parameters and corresponding limits on those parameters. The parameters are associated with both fast and slow treatment times corresponding to length of time it takes for a person to respond to medical treatment for out-of-limit parameter measurements. Audible and visual alarms respond to the alarm trigger. An alarm silence button is pressed to silence the audible alarm for a predetermined suspend time. The audible alarm is activated after the suspend time has lapsed. Longer suspend times are associated with slow treatment parameters and shorter suspend times are associated with fast treatment parameters.
Owner:JPMORGAN CHASE BANK NA
Heating method for tissue contraction
ActiveUS7251531B2Reduce the possibility of damageReduce power levelSurgical needlesSurgical instruments for heatingPelvic supportsBiomedical engineering
Systems, software, devices, and methods are disclosed for therapeutically heating a collagenous structural support tissue within a pelvic support system of a patient body. The present invention may monitor the delivery of energy and dynamically adjust the delivery of energy during the treatment so that an actual treatment time for reaching a target temperature falls within a desired treatment time range of reaching the target temperature. The present invention may also dynamically adjust the power level after the target temperature has been reached so that the tissue is held at the target temperature for a desired dwell time.
Owner:ASTORA WOMENS HEALTH
Phototherapeutic treatment methods and apparatus
A thin film electroluminescent (TFEL) phototherapy device based on high field electroluminescence (HFEL) or from organic light emitting devices (OLED), consistent with certain embodiments of the present invention has a battery and a charging circuit coupled to the battery, so that when connected to a source of current acts to charge the battery. A TFEL panel produces light when voltage from the power source (battery or AC source) is applied. A processor such as a microprocessor is used to control the application of voltage from the power source to the TFEL panel under control of a control program. A housing is used to contain the battery, the charging circuit and the processor and carry the TFEL panel on an outer surface thereof. In one embodiment, the housing incorporates a removable cover that uncovers a household electrical plug useful for supplying charging current to the charger. In use, a method of carrying out phototherapy, consistent with certain embodiments of the invention involves diagnosing a condition of an affected area of tissue that can be treated with phototherapy. A treatment protocol is determined including, for example, a treatment light intensity, a treatment time, a light modulation characteristic and a treatment light wavelength suitable for treating the condition. The affected area is then irradiated with light from the TFEL panel in accord with the treatment protocol.
Owner:INT TECH CENT
Filtration System for Preparation of Fluids for Medical Applications
ActiveUS20080230450A1Medical devicesWater/sewage treatment bu osmosis/dialysisBlood treatmentsMultiple treatments
Systems, methods, and devices for preparation of water for various uses including blood treatment are described. In embodiments, fluid is passed either by pump or passively by gravity feed, through various filtration elements from a fluid source to a treatment fluid container The latter forms a batch that may be used during treatment. Methods and systems for creating multiple-treatment batches are described. Advantages of creating a multitreatment batch include the fact that the burden of treatment preparation can be reduced and the timing of the preparation of the batch can be independent of the treatment time. As described, there are various trade-offs and concerns with this approach which are addressed by the inventive embodiments.
Owner:NXSTAGE MEDICAL
Polycrystalline diamond abrasive elements
A polycrystalline diamond abrasive element, particularly a cutting element, comprises a table of polycrystalline diamond bonded to a substrate, particularly a cemented carbide substrate, along a non-planar interface. The non-planar interface typically has a cruciform configuration. The polycrystalline diamond has a high wear-resistance, and has a region adjacent the working surface lean in catalysing material and a region rich in catalysing material. The region lean in catalysing material extends to a depth of 40 to 90 microns, which is much shallower than in the prior art. Notwithstanding the shallow region lean in catalysing material, the polycrystalline diamond cutters have a wear resistance, impact strength and cutter life comparable to that of prior art cutter, but requiring only 20% of the treatment times of the prior art cutters.
Owner:BAKER HUGHES INC
Tooth movement system and method
A patient's dentition is analysed to determine an orthodontic treatment plan by simulating an intervention in advance. 3D imaging techniques and computer technology are used to simulate and predict tooth movement as a function of the chosen treatment, i.e. a specific orthodontic appliance. In this way treatment options can be compared and the most optimal (shortest treatment time, lowest forces . . . ) treatment for each individual patient can be selected. Sub-steps of the tooth movement are not predefined but computed based on a simulation of orthodontic elements and wire as they would be used in the orthodontic treatment of the patient. This means that the sub-steps are calculated based on the relationship between the applied loads and the tooth movement; only one of both parameters can be chosen freely. Thus, either the tooth load is specified and applied in order to calculate the resulting tooth movement or vice versa the tooth movement is specified and applied in order to calculate the tooth load that should be applied. Moreover, the current invention allows predicting the time at which brackets and / or archwire should be changed, and comparing different treatment options with respect to tooth loading and duration.
Owner:DENTSPLY IMPLANTS NV
Systems and methods for reducing post-surgical complications
InactiveUS6645198B1Easy to holdLimit depth of insertionDiagnostic recording/measuringSurgical instruments for heatingSurgical incisionAbdominal wall
The present invention provides systems and methods for applying RF energy to injured tissue, particularly the peritoneum, in order to prevent harmful post-surgical adhesions. One aspect of the invention is RF energy delivery systems employing trocars, which are designed for use in laparotomies and laparoscopies. Another aspect of the invention is an RF delivery system comprising a surgical sheet with one or more electrodes for delivering the RF energy to the injured tissue resulting from conventional surgical incisions into the abdominal wall. Additionally, another aspect of the invention provides methods for controlling the treatment dosage of RF heat to the injured tissue using parameters such as treatment time, change in tissue temperature, and change in tissue impedance.
Owner:NTERO SURGICAL
Methods and apparatus for forming heat treated optical fiber
InactiveUS7565820B2Trend downDecreases micro-density variationGlass fibre drawing apparatusNon-linear opticsUltrasound attenuationRayleigh scattering
A method for forming an optical fiber includes drawing the optical fiber from a glass supply and treating the fiber by maintaining the optical fiber within a treatment temperature range for a treatment time. Preferably also, the fiber is cooled at a specified cooling rate. The optical fiber treatment reduces the tendency of the optical fiber to increase in attenuation due to Rayleigh scattering, and / or over time following formation of the optical fiber due to heat aging. Apparatus are also provided.
Owner:CORNING INC
Medical treatment system with energy delivery device for limiting reuse
ActiveUS20050113815A1Without disabling functionalityControlling energy of instrumentEye treatmentClosed loopData store
The present invention provides an energy delivery device for use with a medical treatment system for the more efficacious treatment of patients during laser surgery which limits the number of uses or prevents reuse of the energy delivery device after a certain threshold limit has been reached. The energy delivery device comprises a diffusing optical fiber and a memory device having data programmed therein and being operatively connected to an energy generator the optical fiber includes a temperature sensor for generating a temperature signal in a closed loop manner. The data stored in the memory device includes a multiplicity of use parameters, usage limits, usage counts, and count limits all relating to the properties of the medical treatment system. The use parameters may include an elapsed time, a total treatment time, and a number of treatment sites. A main processor is also included for calculating a temperature from the temperature signal and for updating the use parameters in response to data received by the main processor. The main processor is also used to compare the use parameters to their corresponding usage limits. The main processor can create and increment a usage count when at least one of the use parameters exceeds its corresponding usage limit. Thereafter, the main processor compares the usage count to the count limit and disables the energy delivery device when the usage count exceeds a predetermined count limit.
Owner:CILAG GMBH INT
Systems and methods for reducing post-surgical complications
InactiveUS6520185B1Reduce morbidityMinimizes and eliminates formationDiagnostic recording/measuringSensorsSurgical incisionAbdominal wall
The present invention provides systems and methods for applying RF energy to injured tissue, particularly the peritoneum, in order to prevent harmful post-surgical adhesions. One aspect of the invention is RF energy delivery systems employing trocars, which are designed for use in laparotomies and laparoscopies. Another aspect of the invention is an RF delivery system comprising a surgical sheet with one or more electrodes for delivering the RF energy to the injured tissue resulting from conventional surgical incisions into the abdominal wall. Additionally, another aspect of the invention provides methods for controlling the treatment dosage of RF heat to the injured tissue using parameters such as treatment time, change in tissue temperature, and change in tissue impedance.
Owner:NTERO SURGICAL
Light therapy device
A light therapy device (40) for delivering light energy to a portion of a patient's body comprises a light source (115). The light source comprises one or more light emitters (122) for providing input light. A light coupling means (80) directs the input light into a light guide (140). A flexible optically transparent light guide material comprises the light guide. A light extraction means (75) is applied to a surface of the light guide material. The light extraction means is positioned to provide light therapy treatment to one or more localized areas of the patient's body. A control means controls a light dosage relative to intensity, wavelength, modulation frequency, repetition, and timing of treatments.
Owner:CARESTREAM HEALTH INC
Room sterilization method and system
ActiveUS20150086420A1Environment safetyFaster processing-timeMaterial analysis by optical meansLavatory sanitoryRemote controlPassword
A sterilization system consisting of a mobile emitter, a sensing subsystem and a data logging subsystem is described. The emitter has one or more UV emitting lamps or devices. The sensing system comprises at least one remote UV sensor and at least one door sensor. The door sensor comprises a safety shut off door detector and may contain an emergency stop detector and arming detector to protect people from being exposed to UV energy. The system has a remote control for starting, stopping and setting system parameters which include but are not limited to: treatment time, dosage, room size, room number, unit number, floor, facility name, operator name, operator identification number, password, default dosage values, dosage, and patient identification number. The number of treatments per unit of time can be maximized because of the use of incident light measurement.
Owner:STERILIZ
Methods and devices for orthovoltage ocular radiotherapy and treatment planning
ActiveUS20090161826A1Reduce eye motionEfficient relationshipSurgical instrument detailsX-ray/gamma-ray/particle-irradiation therapyX-rayDose level
A method, code and system for planning the treatment a lesion on or adjacent to the retina of an eye of a patient are disclosed. There is first established at least two beam paths along which x-radiation is to be directed at the retinal lesion. Based on the known spectral and intensity characteristics of the beam, a total treatment time for irradiation along each beam paths is determined. From the coordinates of the optic nerve in the aligned eye position, there is determined the extent and duration of eye movement away from the aligned patient-eye position in a direction that moves the patient's optic nerve toward the irradiation beam that will be allowed during treatment, while still maintaining the radiation dose at the patient optic nerve below a predetermined dose level.
Owner:CARL ZEISS MEDITEC INC
Systems and methods for limiting joint temperature
ActiveUS20100152724A1Reduce the risk of injuryReduce and eliminate temperature influenceDiagnostic recording/measuringSensorsTarsal JointFluid temperature
Joint temperature monitoring and control systems and methods are described herein in which the temperature of a fluid within a body or joint space is determined and / or monitored despite the energy generated during treatment by an ablation probe. One or more temperature sensors are positioned along the probe proximally of the electrode assembly and measure the temperature of an electrically conductive fluid without being overly influenced by the surgical effect occurring proximate the electrode assembly. The controller coupled to the probe can also be configured to set temperature limits and treatment times as well as moderating joint temperature by altering the electrically conductive fluid flow.
Owner:ARTHROCARE
Skin protection for subdermal cryogenic remodeling for cosmetic and other treatments
InactiveUS20120259322A1Reduce appearance problemsChange shapeDevices for heating/cooling reflex pointsSurgical instruments for coolingStart timeProximal point
A systems and methods for controlling temperature in a cryogenic device includes providing a device having a probe and a heater element. A distal region of the probe is engaged with the target region. Measuring and recording current temperature of a proximal region of the probe and time of the measurement is used to determine slope of a temperature curve defined by two points. The first point is defined by the current temperature and time of measurement and a second point is defined by a previous measurement of proximal region temperature and time of measurement. When the slope is less than a slope threshold value a treatment flag is activated, treatment start time is recorded and the proximal region is heated with the heater element. Heating is discontinued and the treatment flag is deactivated after elapsed treatment time exceeds a duration threshold value.
Owner:PACIRA CRYOTECH INC
District power network equipment abnormal alarm signal association analysis and diagnosis method
InactiveCN102638100AIntegrity guaranteedGuarantee authenticityCircuit arrangementsInformation processingPower system scheduling
The invention discloses a district power network equipment abnormal alarm signal association analysis and diagnosis method in the field of automation of scheduling of electric power systems. According to the method disclosed by the invention, the weather situation of a plant station region at which abnormal alarm information is located can be automatically identified so as to determine the information processing mode. The method disclosed by the invention has the beneficial effects that by realizing intelligent association analysis and auxiliary decision making of the equipment abnormal alarm information under the real-time state, and performing playback on historical alarm information and performing real-time treatment on manual set information under the research state, the abnormal treatment time is greatly reduced, the incidence of accidents is reduced, a real-time, rich and intelligent auxiliary decision-making support is provided for regulation and control staff, and the safe, high-quality, economical and stable operation of an electric fence is further ensured.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)
Method and apparatus for using atrial discrimination algorithms to determine optimal pacing therapy and therapy timing
A system and method which employs atrial discrimination algorithms to distinguish between different atrial arrhythmias occurring in a patient for selecting an optimal pacing therapy corresponding to the type of arrhythmia identified. The invention may be implemented in a bradycardia pacemaker or other implantable cardiac device. In response to the detection of an atrial rate above the atrial tracking rate, discrimination criteria are applied to a detected atrial activity signal to distinguish between different types of supraventricular tachycardia, such as fast atrial flutter and other atrial flutter at a relatively slower rate, which may be occurring in the patient. The discrimination criteria may be, for example, rate-based or morphology based. The pacer is controlled to provide pacing therapy to a heart in a manner corresponding to the type of supraventricular tachycardia identified. For example, antitachycardia pacing may be provided to the heart in response to the detection of a relatively lower rate supraventricular tachycardia / other atrial flutter, whereas another pacing control, e.g., ventricular pacing, such as ventricular rate regulation or Rate Smoothing, may be applied if a more rapid rate supraventricular tachycardia / fast atrial flutter is identified. The output of an atrial discrimination algorithm may be tracked and the trend thereof used to improve therapy timing.
Owner:CARDIAC PACEMAKERS INC
Oral administration Chinese traditional medicine for treating acne and preparing method thereof
InactiveCN101224287AComprehensive curative effectHigh cure rateAnthropod material medical ingredientsPill deliverySide effectRegimen
The invention discloses a traditional Chinese medicine for treating acne through oral administration and is prepared by more than fifty traditional Chinese medicinal materials of gamene, broom cypress fruit, cortex dictamni, and so on; moreover, the invention is added with proper amount of pangolin so as to strengthen the effect of pus evacuation. According to the traditional Chinese theory of clearing away heat and toxic material, clearing lung heat, invigorating the spleen, relieving dyspepsia, promoting qi, removing dampness, dispelling wind, arresting itching, strengthening interior, relieving superficies, activating blood circulation, cooling the blood, removing stagnation, dredging the collaterals, resisting bacterium and diminishing inflammation, the invention makes use of the synergetic effect of the components to treat acne. The medicine for oral administration has short treatment course, stable curative effect and no recurrence; mild acne can be cured in about 30 days, moderate acne about 45 days and severe acne about 60 days; through the clinical observation of 100 cases of patients with acne, the effective rate of the invention can be 100 percent and the cure rate thereof can reach 62 percent; therefore the invention solves the problems of long treatment course, insignificant curative effect, easy recurrence and certain side effect on the human body in the existing medicines used for treating acne. .
Owner:佟家勇
Systems, methods and devices for in vivo monitoring of a localized response via a radiolabeled analyte in a subject
InactiveUS7011814B2Cost-effective minimally invasiveImprove responseCompounds screening/testingRadioactive preparation carriersAbnormal tissue growthAnalyte
Methods, systems, devices and computer program products monitor in vivo detected radiation in a target localized site within a subject, over a selected time period, to do one or more of: (a) quantify a radiation dose received at a local site; (b) assess bioreceptiveness to a particular treatment time or type; (c) evaluate the pharmacokinetics of a radiolabeled analyte corresponding to a non-radiolabeled analyte; (d) monitor or evaluate metabolic activity; or (e) evaluate a tumor prior to or after a therapeutic treatment.
Owner:VTQ IP HLDG
Non-thermal sterilization method for apple cloudy juice
InactiveCN101214081AEffective sterilizationExtended processing timeFood scienceEscherichia coliEngineering
The invention discloses a liquid food novel non-thermal sterilization method, in particular a non-thermal sterilization method of cloudy apple juice which belongs to the food processing technology field. The technical scheme includes adopting the aseptic operation to send the cloudy apple juice into a reaction vessel and adopting pulse type carbon dioxide with high density for the sterilization. The concrete operation step is: firstly, pumping carbon dioxide with high density into the reaction vessel; secondly, treating for a certain period at the set temperature and pressure condition; thirdly, releasing the carbon dioxide after the treatment to lower the pressure in the reaction vessel to the normal pressure; fourthly, operating the steps from the first to the third repeatedly for more than two times for the pulse type carbon dioxide with high density treatment. The killing effect of Escherichia coli in the cloudy apple juice which is processed in the invention can achieve the result of lowering at least five logarithms to satisfy the commercial aseptic requirement. Compared with the present non-thermal sterilization method, the invention has more obvious sterilization effect and can shorten the treatment time and save energy. The invention has the advantages of low processing temperature, energy saving and environmental protection and can maintain the good flavor of the cloudy apple juice.
Owner:CHINA AGRI UNIV
Active carbon serving as catalyst carrier and treatment method and application thereof
InactiveCN102029193AGood reorganizationShort processing timeCatalyst carriersOrganic chemistryActivated carbonSurface charges
The invention relates to an active carbon serving as a catalyst carrier and a treatment method and application thereof. After being subjected to heating and dipping treatment in hydrogen peroxide, the specific surface area of the active carbon is 900 to 1,300m<2> / g and the mesopore distribution ratio is 20 to 30 percent. The treatment method has short treatment time and high speed, is convenient to operate and is easy to realize. The micropore size distribution and the micropore surface charge reorganization of the treated active carbon adsorptive catalyst are well improved. The active carbon treated by the method is suitable for serving as the carrier of a synthesis catalyst for the industrial production of vinyl acetate.
Owner:CHINA PETROCHEMICAL CORP +2
Preparation method of double-hole-structure alumina supporter
ActiveCN102861617ALarge hole volumeNo overheating phenomenonCatalyst carriersMaterials scienceAmmonium bicarbonate
The invention discloses a preparation method of a double-hole-structure alumina supporter. The preparation method comprises the steps of weighing a certain quantity of pseudo-boehmite dry glue powders, evenly mixing the pseudo-boehmite dry glue powder with a certain quantity of peptizing agent and extrusion-auxiliary agent, then adding a certain quantity of ammonium bicarbonate aqueous solution in materials, mixing and nipping obtained materials into a plasticizer, squeezing into stripes and molding, placing molded materials in a sealing container, and roasting to prepare the alumina supporter after hydro-thermal treatment. The temperature of the hydro-thermal treatment is 70-120 DEG C, and the treatment time is 5-10 hours. Roasting is carried out at the temperature of 600-750 DEG C for 2-4 hours. The mass concentration of an ammonium bicarbonate solution is 40%-80%, the adding quantity of the ammonium bicarbonate solution is calculated according to NH<4+> and Al<3+>, and a molar ratio of the NH<4+> to Al<3+> is (0.5-1):1. According to the preparation method, the preparation procedure is simple, the prepared alumina supporter is in double-hole distribution and has good mechanical strength, and the preparation method is suitable to the field of preparation of heavy oil and residual oil hydrodemetallization catalysts and the like.
Owner:CHINA PETROLEUM & CHEM CORP +1
Device and method for treating skin with temperature control
ActiveUS20080004678A1Avoid overall overheatingControl skin temperatureSurgical instruments for heatingLight therapyTemperature controlSkin surface
A method and system for heating a skin area surface of an individual from an initial temperature to a treatment temperature in a treatment time period exceeding 0.5 sec, where the treatment temperature is in the range of 40°-60° C. An RF generator provides a continuous wave RF voltage energy or a quasi-continuous wave RF voltage across first and second electrode, where at least the first electrode is associated with an applicator that is displaced over the skin surface. The system further includes a skin temperature measuring device or an applicator displacement speed measuring device; and a CPU that monitors a skin temperature or an applicator displacement speed. The CPU turns off the RF energy when the skin temperature is above a predetermined temperature or the displacement speed of the applicator is below a predetermined speed, in order to prevent overheating of the skin.
Owner:SYNERON MEDICAL LTD
Three-dimensional photographing process based on laser probe array and device utilizing same
InactiveCN102494609AAvoid damageAvoid submersionUsing optical meansStereoscopic photographyMatch treatmentStereo matching
The invention discloses a three-dimensional photographing process based on a laser probe array and a device utilizing the same, and belongs to the field of three-dimensional photographing and measuring. Thousands of laser probes are projected to preset space positions according to the digital optical phase conjugation principle, reflection of the laser probes on surfaces of articles is monitored by a general two-dimensional camera, and then three-dimensional coordinate measurement is realized. Meanwhile, since the laser probe array is combined with a pair of three-dimensional cameras, more three-dimensional coordinates can be acquired by means of three-dimensional reconstruction, and accurate and compact three-dimensional coordinate measurement for large sites can be realized. Accordingly, three-dimensional matching treatment accuracy of three-dimensional images in the three-dimensional reconstruction process can be improved, matching treatment time is shortened, images picked up by the three-dimensional cameras can be compensated at the post stage, error in focal length and installation of the two cameras is eliminated, and requirements for the previous stage installation and synchronization of the focal length in the actual photographing process of the three-dimensional cameras are lowered. The three-dimensional photographing process based on the laser probe array and the device utilizing the same are applicable to fields of three-dimensional films, robots, intelligent driving, quick detection for obstacles, automatic measurement for industrial parts, and the like.
Owner:李志扬
Medical apparatus with improved user interface
ActiveUS20070138069A1Improve easeImprove reliabilityMechanical/radiation/invasive therapiesSolvent extractionLoss rateMedicine
A medical apparatus comprises a control system allowing storage of a number of shaping profiles. Each shaping profile is stored as a plurality of pairs, including a shaping profile reference value and a time interval value. The reference value is represented as fraction, for instance a percentage, of the total weight loss the apparatus should achieve at the end of a treatment time. Each time interval value is represented either as fraction of the total treatment time or as a prefixed actual time interval. The control system calculates the actual weight loss rate versus time profile based on the desired total weight loss, on the desired total treatment time as well as on selected desired shaping profile.
Owner:GAMBRO LUNDIA AB
Methods and devices for orthovoltage ocular radiotherapy and treatment planning
ActiveUS7801271B2Surgical instrument detailsX-ray/gamma-ray/particle-irradiation therapyX-rayDose level
A method, code and system for planning the treatment a lesion on or adjacent to the retina of an eye of a patient are disclosed. There is first established at least two beam paths along which x-radiation is to be directed at the retinal lesion. Based on the known spectral and intensity characteristics of the beam, a total treatment time for irradiation along each beam paths is determined. From the coordinates of the optic nerve in the aligned eye position, there is determined the extent and duration of eye movement away from the aligned patient-eye position in a direction that moves the patient's optic nerve toward the irradiation beam that will be allowed during treatment, while still maintaining the radiation dose at the patient optic nerve below a predetermined dose level.
Owner:CARL ZEISS MEDITEC INC
Systems and methods for limiting joint temperature
ActiveUS8355799B2Reduce and eliminate temperature influenceReduce the risk of injuryDiagnostic recording/measuringSurgical instruments for heatingControl systemMonitoring and control
Owner:ARTHROCARE
Method of thermal treatment of myolysis and destruction of benign uterine tumors
ActiveUS20070255267A1Shorten treatment timeIncrease opportunitiesUltrasound therapySurgical instruments for heatingHysteroscopic surgeryHigh intensity
A high-power ultrasound heating applicator for minimally-invasive thermal treatment of uterine fibroids or myomas. High-intensity interstitial ultrasound, applied with minimally-invasive laparoscopic or hysteroscopic procedures, is used to effectively treat fibroids within the myometrium in lieu of major surgery. The applicators are configured with high-power capabilities and thermal penetration to treat large volumes of fibroid tissue (>70 cm3) in short treatment times (3-20 minutes), while maintaining three-dimensional control of energy delivery to thermally destroy the target volume.
Owner:RGT UNIV OF CALIFORNIA +1
Method for recovering polysilicon ingots, carborundum powder and polyethylene glycol from cutting waste mortar
InactiveCN101792142AHigh yieldMultistage water/sewage treatmentSilicon compoundsPotassiumPolyethylene glycol
The invention discloses a method for recovering polysilicon ingots, carborundum powder and polyethylene glycol from cutting waste mortar. The recovering method comprises the following steps shown as an attached diagram, wherein the high temperature purification comprises the following steps of: mixing the prepared silicon micro powder with a fluxing agent according to the weight ratio of 1: 0.5-5 into lumps, carrying out high temperature treatment in a high temperature vacuum furnace with the treatment temperature range of 1450-1800 DEG C and the treatment time range of 1-10h; and then carrying out directional solidification on melting-state high purity silicon subjected to the high temperature treatment to obtain the polysilicon ingots; wherein the fluxing agent is selected from one or any mixture of silica, alumina, calcium oxide, magnesium oxide, potassium oxide, sodium oxide, calcium fluoride, magnesium fluoride, sodium fluoride, sodium chloride, potassium chloride and calcium chloride. The invention has the advantages that: the yields of carborundum and polyethylene glycol are high and can reach more than 70-80 percent; and the recovered polysilicon ingots reach the purity of 6-7N and completely satisfy of the requirement for preparing silicon slices of silicon solar cell.
Owner:唐康宁
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