Patents Assigned to Candela Corporation
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Patent number: 11911100Abstract: Smoke evacuation system for removal of aerosolized chemical compounds and biological fine particles produced during laser treatment of tissue. The rapid smoke evacuation is achieved by coupling a low capacity vacuum pump to a vacuum valve and a vacuum reservoir to create very high flow rate for very short durations. The opening time of the valve could at least partially overlap the laser pulse duration.Type: GrantFiled: December 10, 2020Date of Patent: February 27, 2024Assignee: Candela CorporationInventors: Jayant Bhawalkar, Amit Paranjape, Kevin Schomacker, Craig Langlois, Herbert Otterson
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Patent number: 11730538Abstract: A pigment treatment system includes a handheld apparatus to receive a sub-nanosecond laser beam with a wavelength of about 480 nm to about 550 nm and output a sub-nanosecond laser beam with a wavelength of about 700 nm to about 740 nm. The handheld apparatus includes a monolithic crystal with a first surface coating and a second surface coating to facilitate the change in wavelength of the laser beam through the crystal.Type: GrantFiled: April 30, 2019Date of Patent: August 22, 2023Assignee: CANDELA CORPORATIONInventors: Kevin Schomacker, Xiaoming Shang
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Patent number: 11532919Abstract: A fractional handpiece and systems thereof for skin treatment include a passively Q-switched laser assembly operatively connected to a pump laser source to receive a pump laser beam having a first wavelength and a beam splitting assembly operable to split a solid beam emitted by the passively Q-switched laser assembly and form an array of micro-beams across a segment of skin. The passively Q-switched laser assembly generates a high power sub-nanosecond pulsed laser beam having a second wavelength.Type: GrantFiled: May 27, 2020Date of Patent: December 20, 2022Assignee: CANDELA CORPORATIONInventors: Xiaoming Shang, Hui Liu, Craig Langlois, Kevin Schomacker
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Patent number: 11439463Abstract: A laser system includes a base unit having a power source. A hand-held applicator is connected with the base unit configured to engage biological tissue for treatment. Position detection structure is associated with the applicator for determining a position of the applicator relative to the engaged biological tissue. A laser source generates a laser beam. A cooling system provides a cooling agent to the biological tissue during treatment. A processor circuit is connected with the position detection structure, the laser source and the cooling system. Based on data received from the position detection structure, the processor circuit triggers application of the cooling agent to the treated biological tissue, or triggers application of the cooling agent to the treated biological tissue, followed by a time delay, and then triggers the laser source.Type: GrantFiled: April 26, 2019Date of Patent: September 13, 2022Assignee: CANDELA CORPORATIONInventor: Kevin Schomacker
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Patent number: 11444428Abstract: A MOPA laser system that includes a seed laser configured to output pulsed laser light, an amplifier configured to receive and amplify the pulsed laser light emitted by the seed laser; and a pump laser configured to deliver a pump laser beam to both the seed laser and the amplifier and a variable attenuator configured to eliminate missing Q-switched pulses.Type: GrantFiled: April 6, 2020Date of Patent: September 13, 2022Assignee: CANDELA CORPORATIONInventors: Jayant D. Bhawalkar, Xiaoming Shang
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Patent number: 11271356Abstract: A microchip laser and a handpiece including the microchip laser. The microchip laser includes a laser medium with input and output facets. The input facet is coated with a highly reflective dielectric coating at microchip laser wavelength and highly transmissive at pump wavelength. The output facet is coated with a partially reflective at microchip laser wavelength dielectric coating. A saturable absorber attached by intermolecular forces to output facet of microchip laser. A handpiece for skin treatment includes the microchip laser.Type: GrantFiled: March 4, 2020Date of Patent: March 8, 2022Assignee: CANDELA CORPORATIONInventors: Xiaoming Shang, Christopher J. Jones, Zhi Huang
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Patent number: 11110294Abstract: A tissue treatment system includes an applicator connected with a base unit. The applicator includes a light source to generate light energy. A light guide directs the light energy to biological tissue and is configured to contact biological tissue. A thermoelectric cooler has a cold side and a hot side, with the cold side being associated with the light guide. A hot side plate is mounted to the hot side of the thermoelectric cooler. A first fluid passage is between the reservoir and the hot side plate to deliver cooling fluid over the hot side plate to chill the cold side of the thermoelectric cooler and cool the light guide and biological tissue. A second fluid passage is associated with the light source to direct cooling fluid to the light source prior to being returned to the reservoir. The first and second fluid passages define a single cooling fluid circulation loop.Type: GrantFiled: September 13, 2019Date of Patent: September 7, 2021Assignee: Candela CorporationInventors: Kevin Schomacker, Dima Dubitsky
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Patent number: 10925669Abstract: Smoke evacuation system for removal of aerosolized chemical compounds and biological fine particles produced during laser treatment of tissue. The rapid smoke evacuation is achieved by coupling a low capacity vacuum pump to a vacuum valve and a vacuum reservoir to create very high flow rate for very short durations. The opening time of the valve could at least partially overlap the laser pulse duration.Type: GrantFiled: April 14, 2017Date of Patent: February 23, 2021Assignee: Candela CorporationInventors: Jayant Bhawalkar, Amit Paranjape, Kevin Schomacker, Craig Langlois, Herbert Otterson
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Patent number: 10746312Abstract: A single fill valve for a cryogenic liquid storage vessel. The valve includes a central opening configured to receive a cryogenic liquid and distal and bottom openings configured to direct cryogenic liquid into the cryogenic liquid storage vessel. The valve further includes a plunger and a pin configured to move the plunger and block at least the distal and bottom openings of the single use valve.Type: GrantFiled: September 10, 2018Date of Patent: August 18, 2020Assignee: CANDELA CORPORATIONInventors: Dima Dubitsky, Michael Barenboym, Owen Schirduan
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Patent number: 10644476Abstract: A MOPA laser system that includes a seed laser configured to output pulsed laser light, an amplifier configured to receive and amplify the pulsed laser light emitted by the seed laser; and a pump laser configured to deliver a pump laser beam to both the seed laser and the amplifier and a variable attenuator configured to eliminate missing Q-switched pulses.Type: GrantFiled: May 7, 2018Date of Patent: May 5, 2020Assignee: Candela CorporationInventors: Jayant D. Bhawalkar, Xiaoming Shang
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Patent number: 10624699Abstract: An apparatus for treatment of a subcutaneous fat region includes a source of electromagnetic radiation generating electromagnetic radiation having a non-fat selective wavelength. A delivery system is coupled to the source of electromagnetic radiation and is configured to deliver the electromagnetic radiation to the subcutaneous fat region for at least 300 seconds. A controller is configured to adjust an average power density based on a thickness of skin overlying the subcutaneous fat region, and to cause necrosis of at least one fat cell in the subcutaneous fat region. The non-fat selective wavelength is 950 nm to 1090 nm, 1100 nm to 1160 nm, 1,300 nm to 1625 nm, or 1,800 nm to 2,200 nm.Type: GrantFiled: February 28, 2018Date of Patent: April 21, 2020Assignee: Candela CorporationInventors: Kevin Schomacker, James C. Hsia
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Patent number: 10622780Abstract: A microchip laser and a handpiece including the microchip laser. The microchip laser includes a laser medium with input and output facets. The input facet is coated with a highly reflective dielectric coating at microchip laser wavelength and highly transmissive at pump wavelength. The output facet is coated with a partially reflective at microchip laser wavelength dielectric coating. A saturable absorber attached by intermolecular forces to output facet of microchip laser. A handpiece for skin treatment includes the microchip laser.Type: GrantFiled: June 22, 2018Date of Patent: April 14, 2020Assignee: Candela CorporationInventors: Xiaoming Shang, Christopher J. Jones, Zhi Huang
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Patent number: 10413361Abstract: A device and a method for fractional skin treatment. The device employs two diffractive optical elements. One of the diffractive optical elements provides two coaxial laser beams and another diffractive optical element splits the two coaxial laser beams into a plurality of beamlets. A lens arranged to receive the plurality of the laser beams and to focus them in a skin treatment plane. The lens forms an image where each of the beamlets is imaged as a spot with a high intensity central area and a lower intensity area surrounding the central area.Type: GrantFiled: April 17, 2017Date of Patent: September 17, 2019Assignee: Candela CorporationInventors: Jayant Bhawalkar, Kevin Schomacker
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Patent number: 10241345Abstract: Disclosed is an apparatus and a method to preserve linearly polarized laser beam when it passes through a freely twisting beam delivery system such as an articulated arm. The polarization of the output beam from the delivery system will be stable and the same as the polarization of the input beam to the delivery system, and can be used to pump anisotropic laser crystals as well as nonlinear optical crystals.Type: GrantFiled: August 16, 2017Date of Patent: March 26, 2019Assignee: Candela CorporationInventors: Xiaoming Shang, Jayant Bhawalkar
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Patent number: 10069272Abstract: A MOPA laser system that includes a seed laser configured to output pulsed laser light, an amplifier configured to receive and amplify the pulsed laser light emitted by the seed laser; and a pump laser configured to deliver a pump laser beam to both the seed laser and the amplifier.Type: GrantFiled: July 14, 2017Date of Patent: September 4, 2018Assignee: Candela CorporationInventors: Jayant D. Bhawalkar, Xiaoming Shang, Jinze Qiu, Christopher J. Jones, James Hsia
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Patent number: 9987088Abstract: A method of treating a subcutaneous fat region is provided. The method includes generating electromagnetic radiation having a wavelength of about 1,200 nm to about 1,230 nm and delivering an average power density of less than or equal to about 2.3 W/cm2 of the electromagnetic radiation to the subcutaneous fat region for at least 300 seconds. The method also includes cooling an epidermal region and at least a portion of a dermal region overlying the subcutaneous fat region for at least a portion of the at least 300 seconds. The method further includes causing necrosis of at least one fat cell in the subcutaneous fat region.Type: GrantFiled: November 17, 2015Date of Patent: June 5, 2018Assignee: Candela CorporationInventors: Kevin Schomacker, James C. Hsia
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Patent number: 9895188Abstract: A skin surface is treated with RF energy (e.g., unipolar, monopolar, bipolar or multipolar RF delivery). A first semiconductive cap disposed on a first distal end of a first electrode and, optionally, a second semiconductive cap disposed on a second distal end of a second electrode are applied to the skin surface. RF energy is delivered from the first electrode and the second electrode through the first semiconductive cap and the second semiconductive cap, respectively, through the skin surface. The first semiconductive cap and/or the second semiconductive cap have an electrical conductivity matched or substantially matched to the skin's electrical conductivity (e.g., about 0.1 to about 2 times that of the skin).Type: GrantFiled: September 5, 2014Date of Patent: February 20, 2018Assignees: Candela Corporation, Syneron Medical LTD.Inventors: Kevin Schomacker, Avner Rosenberg
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Patent number: 9889297Abstract: A skin surface is treated with bipolar RF energy. A first semiconductive cap disposed on a first distal end of a first electrode and a second semiconductive cap disposed on a second distal end of a second electrode are applied to the skin surface. RF energy is delivered from the first electrode and the second electrode through the first semiconductive cap and the second semiconductive cap, respectively, through the skin surface. A thickness of each semiconductive cap between a blunt skin contacting surface and a curved surface affixed to a respective electrode is thicker at an inner portion and thinner at a center portion to homogenize the electrical field at the skin surface.Type: GrantFiled: February 22, 2012Date of Patent: February 13, 2018Assignee: Candela CorporationInventor: Kevin T. Schomacker
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Patent number: 9722392Abstract: A MOPA laser system that includes a seed laser configured to output pulsed laser light, an amplifier configured to receive and amplify the pulsed laser light emitted by the seed laser; and a pump laser configured to deliver a pump laser beam to both the seed laser and the amplifier.Type: GrantFiled: November 19, 2014Date of Patent: August 1, 2017Assignee: Candela CorporationInventors: Jayant D. Bhawalkar, Xiaoming Shang, Jinze Qiu, Christopher J. Jones, James Hsia
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Patent number: 9597528Abstract: Disclosed is an applicator or handpiece configured to apply treatment energy to a segment of skin located in a tissue or skin treatment plane. The treatment energy could be RF energy, applied by a pair of bipolar RF electrodes or optical energy. The applicator includes an optical system configured to form a rectangular spot and homogenize the optical energy distribution.Type: GrantFiled: September 12, 2014Date of Patent: March 21, 2017Assignee: Candela CorporationInventors: Kevin Schomacker, Xiaoming Shang, Herbert R. Otterson, Antonio Paulino