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32 results about "Fractional laser" patented technology

SF6 gas leakage detection method base on fractional laser-induced breakdown spectroscopy

The invention discloses an SF6 gas leakage detection method base on fractional laser-induced breakdown spectroscopy. The method employs a system which comprises an embedded system mainframe (18), a high-energy pulse laser (1), a beam expander (3), a focusing lens array (5), a beam splitter (6), a photoelectric detector array (10), a drive amplification output circuit (11), an acousto-optic tunable filter (12), an AOTF (acousto-optic tunable filter) drive controller (13) and a lens (19). Multiple points of a monitored area are subjected to LIBS (laser-induced breakdown spectroscopy) signal real-time analysis of elemental sulphur and elemental fluorine according to the fractional LIBS technology so as to judge whether SF6 gas is leaked or not and approximate concentration distribution of SF6 gas leakage. The SF6 gas leakage detection method base on fractional laser-induced breakdown spectroscopy has the advantages that fractional LIBS measurement is higher in efficiency than single-point measurement; the AOTF is adopted for two wavelength selections in LIBS analysis, a conventional spectrograph for beam splitting and spectral analysis is not needed, and accordingly analysis time is saved, and timeliness is improved; approximate concentration distribution of SF6 gas leakage can be analyzed while whether SF6 gas is leaked or not is judged.
Owner:STATE GRID CORP OF CHINA +1

A treatment device for area and line fractional laser treatment

The invention provides a treatment device (100) for fractional laser-based treatment. The treatment device comprises a treatment generator (80) comprising a treatment laser (20) and a laser scanning system (30). The laser scanning system comprises at least one movable deflection element and is configured and arranged for scanning laser light across an emission window (70) towards skin tissue (110) from a plurality of locations (74) in the emission window by moving the at least one deflection element relative to the emission window, whereby, in use, laser-based lesions (120) are generated inside the skin tissue. The treatment device also comprises a controller (60) for generating a predefined disposition of lesions (120) in the skin tissue by emitting laser light via selected ones of the plurality of locations in the emission window while the treatment device is moved relative to the skin surface (105). The controller is configured for generating an area disposition of the lesions by scanning the laser light across the emission window using the laser scanning system and deflecting laser light into the skin tissue via the plurality of locations while the treatment device is moved relative to the skin surface, whereas in the line treatment mode the controller is configured to generate a line disposition of the lesions inside the skin tissue from a single predefined location of the emission window by maintaining the at least one deflection element in a stationary position relative to the emission window while the treatment device is moved relative to the skin surface.
Owner:KONINKLJIJKE PHILIPS NV

Microjet Drug Delivery System with Enhanced Drug Penetration Performance by Fractional Laser Pre-ablation

ActiveUS20190255253A1Relieve painEfficient and reliable drug deliveryJet injection syringesAutomatic syringesDrugs solutionLaser beams
Disclosed is drug delivery system for effectively administering a drug into a human or animal body tissue. The microjet drug delivery system includes (a) a microjet injector including: a pressure chamber partially sealed by an elastic membrane and containing a pressure-inducing liquid fluid-tightly filled therein; and a drug chamber adjacent to the pressure chamber, wherein the elastic membrane is disposed between the pressure and drug chambers, wherein the drug solution is contained in the drug chamber, wherein the drug chamber has a micro-nozzle partially defined in a wall thereof for ejecting the drug solution out of the drug chamber; (b) a laser generator for generating a laser beam and emitting the laser beam out of the laser generator, wherein the laser generator is configured by irradiating the laser beam into the pressure-inducing liquid in the microjet injector, thereby generating a bubble in the pressure-inducing liquid; and (c) a fractional laser filter module configured for splitting the laser beam incident from the laser generator into a plurality of fractional laser beams, each beam has a reduced diameter, and for irradiating the fractional laser beams. According to the microjet drug delivery system, the pre-ablating of the skin with the fractional laser beams to partially remove the stratum corneum may enable the drug microjet based injection to allow the drug to be effectively invaded into a skin tissue at the portion where the stratum corneum is partially removed and relatively softened.
Owner:SEOUL NAT UNIV R&DB FOUND

Fractional laser fog-absorption purification system device

InactiveCN110755754AAffect the effect of scar removalLight therapyPumpsMedicineAir pump
The invention provides a fractional laser fog-absorption purification system device, which comprises a laser therapeutic instrument body, a support arm, a laser head, a blowing nozzle and an air pump;the support arm is arranged on the laser therapeutic instrument body, the laser head is arranged on the support arm and is connected with the laser therapeutic instrument body, and the blowing nozzleis arranged on the laser head; the air pump is arranged on the laser therapeutic instrument body; the air pump communicates with the blowing nozzle through an air blowing duct, the air pump is used for generating high-pressure air so that high-pressure airflow can be blown out in the laser emitting direction of the laser head through the blowing nozzle, and water mist generated in the working process of the laser head can be blown away. Therefore, in a laser scar removal treatment process, the influence of water mist generated by scar removal on the operation sight of a doctor can be effectively reduced, and meanwhile the situation that the scar removal effect of laser is influenced by the water mist can be avoided. The problem that the fractional laser fog-absorption purification systemdevice in the prior art cannot eliminate water fog generated in the treatment process, and consequently the treatment effect is affected is solved.
Owner:古兰

Microjet drug delivery system with enhanced drug penetration performance by fractional laser pre-ablation

Disclosed is drug delivery system for effectively administering a drug into a human or animal body tissue. The microjet drug delivery system includes (a) a microjet injector including: a pressure chamber partially sealed by an elastic membrane and containing a pressure-inducing liquid fluid-tightly filled therein; and a drug chamber adjacent to the pressure chamber, wherein the elastic membrane is disposed between the pressure and drug chambers, wherein the drug solution is contained in the drug chamber, wherein the drug chamber has a micro-nozzle partially defined in a wall thereof for ejecting the drug solution out of the drug chamber; (b) a laser generator for generating a laser beam and emitting the laser beam out of the laser generator, wherein the laser generator is configured by irradiating the laser beam into the pressure-inducing liquid in the microjet injector, thereby generating a bubble in the pressure-inducing liquid; and (c) a fractional laser filter module configured for splitting the laser beam incident from the laser generator into a plurality of fractional laser beams, each beam has a reduced diameter, and for irradiating the fractional laser beams. According to the microjet drug delivery system, the pre-ablating of the skin with the fractional laser beams to partially remove the stratum corneum may enable the drug microjet based injection to allow the drug to be effectively invaded into a skin tissue at the portion where the stratum corneum is partially removed and relatively softened.
Owner:SEOUL NAT UNIV R&DB FOUND

Carbon dioxide fractional laser treatment instrument capable of arbitrarily deforming treatment region

The invention provides a carbon dioxide fractional laser treatment instrument capable of arbitrarily deforming a treatment region, and belongs to the technical field of medical equipment. The carbon dioxide fractional laser treatment instrument comprises an output positioning cylinder, wherein a clamping joint and a positioning ring are arranged on the output positioning cylinder; a plurality of push rods are uniformly arranged, along circumference of a cross section of the output positioning cylinder, on the output positioning cylinder located between the clamping joint and the positioning ring; guide holes corresponding to the push rods one by one are formed in the output positioning cylinder; the push rods are slidably connected to the corresponding guide holes; outer ends of the push rods are connected with a driving mechanism capable of pushing the push rods to slide in the guide holes; a corrugated covering ring is arranged in the output positioning cylinder; the covering ring ismade of a soft heat-absorbing material; an outer side edge of the covering ring is fixedly connected with the output positioning cylinder; an inner side edge of the covering ring is connected with aninner end of each push rod; the covering ring is coaxial with the output positioning cylinder. The carbon dioxide fractional laser treatment instrument provided by the invention has advantages of emitting dot-matrix patterns of different shapes and the like.
Owner:致壹实业(上海)有限公司

A device for fractional laser-based-treatment

The invention provides a treatment device (100) for fractional laser-based skin treatment. The treatment device comprises an emission window (70) comprising an elongated area (75) and a plurality of predefined locations (74) in said elongated area (75), wherein the predefined locations (74) are arranged in an elongated array which extends along a treatment axis (72) of the window (70), and wherein each predefined location (74) in the array is located at a distance from the treatment axis (72), seen in a direction perpendicular to the treatment axis (72), which is smaller than 25% of a maximum distance between two predefined locations (74) in the array, seen in a direction parallel to the treatment axis (72). The treatment device further comprises a treatment generator (80) comprising a treatment laser (20) for emitting laser light (21) towards skin tissue (110) from said plurality of predefined locations (74) in the emission window (70) for generating, in use, laser-based lesions (120) inside the skin tissue (110). The treatment device further comprises a motion sensor (90) for sensing motion of the treatment device relative to the skin surface (105) and a controller (60) for determining a non-zero sequence of at least one of the plurality of predefined locations in the emission window from which laser light is consecutively emitted in dependence on the sensed motion. The controller is configured to activate the treatment generator to generate said non-zero sequence when the sensed motion of the treatment device relative to the skin surface only has a component in a direction parallel to the treatment axis.
Owner:KONINKLJIJKE PHILIPS NV

Weak optical source Rowland grating linear array CCD/CMOS detector optical splitting system and method

PendingCN110596077ARealize spectroscopic detectionWith full spectrum acquisitionAnalysis by thermal excitationOptical elementsGratingLaser-induced breakdown spectroscopy
The present invention belongs to the technical field of atomic emission spectroscopy, and relates to a weak optical source Rowland grating linear array CCD/CMOS detector optical splitting system and method, which is applied to a micron-sized fractional laser-induced breakdown spectroscopy great than or equal to 5 [mu]m. The optical splitting system successively comprises a plano-convex lens (2), afirst cylindrical lens (3), an entrance slit (4), a concave grating (5), a second cylindrical lens (6) and a CCD/CMOS detector (7) along a beam propagation direction. The entrance slit (4), the concave grating (5) and the CCD/CMOS detector (7) are on a Rowland circle, an optical source (1), the plano-convex lens (2) and the first cylindrical lens (3) are outside the Rowland circle, and are collinear with the entrance slit (4) and the concave grating (5). Compared with a conventional Rowland optical system, the optical splitting system has characteristics of being high in optical resolution, large in signal magnification times, great in signal-to-noise ratio and the like, and is especially suitable for spectral analysis of a monopulse and a plurality of pulses of a fractional laser spectrometer.
Owner:NCS TESTING TECH

CO2 fractional laser sterilization experimental method

The invention discloses a CO2 fractional laser sterilization experimental method. The method includes: conducting aseptic operation on a first strain and a second strain, and inoculating the strains into a solid medium to conduct culture; extracting single bacterial colony of each strain from the solid medium, performing inoculation into 5ml liquid media respectively, and placing the media into a 37DEG C constant temperature shaking table to conduct culture; taking 2.5ml of a culture liquid and adding it into a 10ml liquid medium, and performing culture in a 37DEG C constant temperature shaking table; by means of turbid comparison with a Mcfarland turbidimetric tube, preparing the bacterial liquids of the liquid media into bacterial liquids of three concentrations; coating culture dishes with each concentration bacterial liquid of every strain; irradiating the centers of the bacteria coated culture dishes by CO2 fractional laser, employing CO2 fractional laser with the irradiation energy intensity of 3J, 8J and 12J respectively to conduct irradiation for 1ms respectively on the culture dishes corresponding to three concentrations of each strain; placing the irradiated culture dish for each concentration bacterial liquid of every strain into a 37DEG C bacteria incubator to conduct culture; and after irradiation, observing whether bacterial colonies grow on the laser irradiated culture dishes continuously, if any, counting bacteria and representing the number by CFU (colony-forming units).
Owner:PEKING UNION MEDICAL COLLEGE HOSPITAL CHINESE ACAD OF MEDICAL SCI
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