Abstract: There is provided a method (500) of treating an optical waveguide. The method comprises applying (502) the volume of ferrofluid to the optical waveguide, and applying (504) a magnetic field to the volume of ferrofluid to move the volume of ferrofluid at least partially along a length of the optical waveguide. A personal care device and a system are also disclosed.

Abstract: A measurement system is disclosed for light-based measurement of collagen, using a first light intensity and a second light intensity. The measurement system comprises a light source for emitting a light beam having a source wavelength range and an optical system to polarize light within the source wavelength range, thereby generating a polarized light beam, and to direct and focus the polarized light beam to a target position inside the skin at a predetermined focus depth below an outer surface of the skin. The measurement system further comprises a first detector, and a second detector for detecting the first light intensity and the second light intensity within, respectively, a first detection wavelength range and a second detection wavelength range of light reflected from the target position.

Abstract: The present application relates to a treatment head (30) for performing a microdermabrasion procedure on a subject's skin (40). The treatment head (30) has a skin contact surface (32) which is positionable against the subject's skin (40) and at least one vacuum aperture (50) at the skin contact surface (32). The at least one vacuum aperture (50) defines a path (52) at which a vacuum is generatable. The at least one vacuum aperture (50) has an abrasive edge (56) defined by a juncture of the vacuum aperture and the skin contact surface. The abrasive edge is configured to act on the subject's skin (40). The present application also relates to a skin care device (10) for performing a microdermabrasion procedure on a subject's skin (40).

Abstract: The invention provides a non-invasive skin treatment device (200) comprising: a light source (10) constructed for emitting treatment light (15), an optical system (20) constructed for focusing the treatment light along an optical axis (OA) to a focus position (320) inside the skin tissue (300), and an indenter (30) comprising a skin contact surface (34) having an aperture (A1) at a distance from the optical system for allowing the treatment light to be focused through the aperture into the skin tissue.

Abstract: There is provided a method of estimating a location and/or orientation of a handheld personal care device with respect to a user of the handheld personal care device. The method includes obtaining measurements of a posture of a part of the body of the user as the user uses the handheld personal care device. The method also includes using the measurements to estimate the location and/or orientation of the handheld personal care device with respect to the user during use of the handheld personal care device based on a predetermined relationship between the location and/or orientation of the handheld personal care device with respect to the user and, exclusively, the posture of the part of the body of the user. A personal care system and a machine-readable medium are also disclosed.

Abstract: There is provided a handheld personal care device, the device comprising one or more light emitting elements, each configured to emit light; one or more light receiving elements, each configured to receive light and output a respective measurement signal representing measurements of the received light; and a control unit that is configured to estimate a position and/or an orientation of the device relative to a subject; wherein the one or more light emitting elements and the one or more light receiving elements are arranged on the device such that, depending on the position and/or the orientation of the device relative to the subject, at least one of the one or more light receiving elements can receive light emitted by at least one of the one or more light emitting elements and reflected by a reflective surface in the environment of the subject; wherein the control unit is configured to estimate the position and/or the orientation of the device relative to the subject based on an analysis of the respective me

Abstract: 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).

Abstract: A skin treatment device for locally treating skin with light is provided that comprises a tip, a light emission element, a safety mechanism comprising an optical element and an optical element positioning structure. The optical element receives a converging light beam from the light emission element. The optical element is configured to operate as a diverging lens. The optical element positioning structure positions the optical element in a safety position, or in a treatment position when the tip is in contact with the skin to be treated, and allows movement of the optical element between both positions. In the safety position, the optical element is arranged at a position on the optical axis to generate an eye-safe light beam. In the treatment position, the optical element is arranged at another position on the optical axis to generate a treatment light beam.

Abstract: There is provided a method for operating a personal care device. The method comprises obtaining, using an imaging device, image data relating to a portion of a body of a user; measuring, using the image data, a parameter relating to at least one hair growing from the portion of the body; and determining a position of the portion of the body on the body based on the measured parameter and a predetermined relation between the parameter and the position on the body. A personal care device, a personal care system and a machine-readable medium are also disclosed.

Abstract: A treatment device for fractional laser-based skin treatment includes an emission window having an elongated area and predefined locations that are arranged in an elongated array which extends along a treatment axis of the window. A treatment generator has a treatment laser for emitting laser light towards skin tissue from the predefined locations in the emission window for generating, in use, laser-based lesions inside the skin tissue. The treatment device also includes a motion sensor for sensing motion of the treatment device relative to the skin surface, and a controller for determining a non-zero sequence of at least one of the predefined locations from which laser light is consecutively emitted in dependence on the sensed motion. The controller allows generation of the 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.

Abstract: The application provides a non-invasive measurement device (30) and method for the measurement of skin properties using laser light, the device comprising a probe module (70) and an imaging module (50). The application also provides a non-invasive treatment device (130, 230, 330, 430) and method comprising the measurement device/method. The probe module (70) provides a probe light beam (82) that enters the skin along the probe axis (71). The probe light beam (82) is separate from any treatment radiation beam (22), so that the probe light beam (82) can be optimized for the measurement. A more reliable skin measurement system is provided because it measures a plurality of positions along the probe axis (71), within a probe region (95). The measurement device and method may also comprise a treatment module (110) or treatment step. The skin parameters measured may then be directly used to control the treatment parameters.

Abstract: A skin treatment apparatus (1) for treating a skin surface, comprising: a hand held base body (10); a rotor head (20), movably connected to the base body (10), and including at least one skin contacting element (22); a motor (30), operably connected to both the base body (10) and the rotor head (20) to rotatably drive the rotor head (20) relative to the base body (10) around a rotation axis (L); at least one motion sensor (40) to generate a movement signal reflecting a path of relative movement between the motion sensor and the skin surface; and a control unit (50), operably connected to the at least one motion sensor (40) and the motor (30) to control the motor (30) to rotatably drive the rotor head (20) in dependence of the movement signal of the at least one motion sensor (40).

Abstract: The invention provides a non-invasive treatment device (100) for heating a first (15) and a second (25) inner region of skin using r.f. electrical current, comprising: a first r.f. treatment electrode (10) configured and arranged to allow r.f. current to pass through the first inner region (15) to a return electrode (340), a second r.f. treatment electrode (20) configured and arranged to allow r.f. current to pass through the second inner region (25) to the return electrode (340), the device further being arranged such that the smallest distance between the first r.f. treatment electrode (10) and the return electrode (340) is less than the smallest distance between the second r.f. treatment electrode (20) and the return electrode (340); wherein the electrical skin contact area of the return electrode (340) is 5 or more times larger than the electrical skin contact area of the first r.f. treatment electrode (10), and the electrical skin contact area of the second r.f.

Abstract: The invention provides a non-invasive skin treatment device (100) comprising: a light source (10) constructed and configured for generating linearly polarized probe light (12) and linearly polarized treatment light (22), a polarization modulator (30) constructed and configured for controlling a polarization direction of the probe light and a polarization direction of the treatment light, a polarization sensitive sensor (40) constructed and configured for sensing a level of depolarization of the probe light by sensing an intensity of back-scattered probe light (42) from the target position (210) in a predefined polarization direction of the polarization sensitive sensor, and a controller (60) being configured for scanning the polarization direction of the probe light over a predefined range while receiving the measurement signal (Sm) and for selecting an optimum polarization (P1) direction for which the depolarization of the probe light is at a minimum.

Abstract: The measurement system 110 comprises a light source 120 configured and arranged for emitting a light beam via a polarization modulator 130 to a target position inside the skin 160, wherein the polarization modulator 130 is configured and arranged to simultaneously provide, in use, a first and a second region in a cross-section of the light beam in the target position, the first and the second region being distinct and having a corresponding first and second direction of polarization, the first and the second polarization direction being different from each other, and the measurement system also comprises a detection unit 150 to simultaneously detect a first and a second intensity of reflected light 145, the first intensity corresponding to light reflected from the first region of the light beam in the target position 160, and the second intensity corresponding to light reflected from the second region of the light beam in the target position 160, and the measurement system further comprises a processor being

Abstract: The invention provides a non-invasive skin treatment device (200) for generating a multiphoton ionization process at a target position (110) in skin tissue (102). The skin treatment device (200) comprises a laser source (105) configured and constructed for generating a laser beam (106), an optical system (109, 112) for focusing the laser beam into the target position below a skin surface (103), and a plasma unit (117) configured and constructed for generating a plasma (100) such that, in use, at least a portion of the plasma penetrates the skin tissue for generating at least one free electron at the target position. The skin treatment device further comprises a control unit (123) configured and constructed for controlling the laser source and the plasma unit such that, in use, at least a portion of the light of the laser beam is absorbed by said at least one free electron generated at the target position, thereby generating the multiphoton ionization process.

Abstract: A skin treatment device comprising a light source providing a light beam for optically treating skin, a wheel with a wheel surface for reflecting the light beam towards the skin, driving means for rotating the wheel and changing an angular position of the wheel, where different angular positions of the wheel correspond to different directions of reflection for the light beam, an angular position detector for detecting the angular position of the wheel, storage means for storing predefined skin-treatment patterns, a relation between the different angular positions of the wheel; and different reflection directions of the light beam, a control circuit coupled to the light source. The light source being controlled in dependence on the detected angular position such that, for each revolution of the wheel, the light beam is controlled to only illuminate the wheel surface in selected angular positions of the wheel to realize a predefined skin-treatment pattern.

Abstract: The invention provides a microdermabrasion device (1) comprising a microdermabrasion zone (300) for abrading a part of a skin of a subject, wherein the microdermabrasion zone (300) comprises a support material (310) and abrasive structures (320) at least partially associated with the support material (310), wherein the microdermabrasion zone (300) comprises a releasable material (330), releasable comprised by the microdermabrasion zone (300), wherein the releasable material (330) is a solid in air at 20° C. and at 1 bar, and wherein the releasable material (330) comprises a functional material (1330).

Abstract: The invention relates to a device (100) for radio-frequency (RF) skin treatment comprising an active electrode (1, 31) arranged on an operational side (15) of the device and having a first skin contact surface for electrical contact with a skin of a user during use. The device further comprises a return electrode (2, 32) arranged on the operational side (15) of the device and having a second skin contact surface for electrical contact with the skin of the user during use. The second skin contact surface is at least five times larger than the first skin contact surface. An RF generator (21) is arranged to supply an RF treatment voltage between the active electrode and the return electrode when the active electrode and the return electrode are in electrical contact with the skin, so as to heat the skin below the active electrode.

Abstract: The invention provides a microdermabrasion device (1) comprising a vacuum system (100) and a device tip (200), wherein the vacuum system (100) is in fluid communication with a channel inlet (120) at an inlet zone (1200) of the device tip (200), wherein the vacuum system (100) is configured to apply a vacuum to the inlet zone (1200), wherein the inlet zone (1200) further comprises an sensor (400) configured to measure a skin parameter of a part of a skin in the inlet zone (1200) and to provide a corresponding sensor signal, wherein the device tip (200) further comprises a microdermabrasion zone (1240) configured to abrade a part of said skin, and wherein the microdermabrasion device (1) further comprises a control unit (500) configured to control the vacuum as function of sensor signal information derived from the sensor signal and a predetermined relation between the sensor signal information and a vacuum setting.