Method of determining a position and/or orientation of a hand-held device with respect to a subject, a corresponding apparatus and a computer program product

    公开(公告)号:US12035978B2

    公开(公告)日:2024-07-16

    申请号:US17312972

    申请日:2020-01-22

    Abstract: According to an aspect, there is provided a method of determining a position and/or orientation of a hand-held device with respect to a subject. The hand-held device is for use on a body of the subject. The method comprises receiving (101) images from an imaging unit arranged in or on the hand-held device; receiving (103) a displacement signal from a displacement sensor that is arranged in or on the hand-held device to measure displacement of the hand-held device along the body when the hand-held device is in contact with the body; processing (105) the received images to determine whether a body part of the subject can be identified in the received images; determining (107) whether the hand-held device is in contact with the body; determining (109) a mode of operation to use to determine a position and/or orientation of the hand-held device based on whether a body part can be identified and whether the hand-held device is in contact with the body; wherein the mode of operation to use is determined as (i) a first mode when a body part can be identified, (ii) a second mode when a body part cannot be identified and the hand-held device is not in contact with the body, and (iii) a third mode when the hand-held device is in contact with the body; and determining (111) the position and/or orientation of the hand-held device with respect to the body of the subject using the received images and/or received displacement signal according to the determined mode of operation.

    Non-invasive skin treatment device using r.f. electrical current with a treatment settings determiner

    公开(公告)号:US11179565B2

    公开(公告)日:2021-11-23

    申请号:US15563982

    申请日:2016-03-29

    Abstract: The invention provides a non-invasive skin treatment device (100) comprising an r.f. treatment electrode (10); a return electrode (40); an r.f. generator (20) configured and arranged such that, during treatment, an r.f. treatment signal is applied between the r.f. treatment electrode (10) and the return electrode (40) for heating an inner region (15) of skin; an impedance measurement circuit (35) configured and arranged to measure, before treatment of the inner region, an initial skin impedance (Zo) between the r.f. treatment electrode (10) and the return electrode (40); and a treatment settings determiner (30) configured and arranged to determine, before treatment of the inner region (15), treatment settings associated with the r.f. treatment signal depending on the initial skin impedance (Zo) and on a dimension of the r.f. treatment electrode (10) in the contact plane, the treatment settings comprising at least one of a treatment duration (TD) associated with a desired treatment result, and an r.f. electrical parameter associated with the r.f. treatment signal. The skin treatment device (100) further comprises a controller (25) configured and arranged to consecutively activate the impedance measurement circuit (35) and the treatment settings determiner (30) before treatment of the inner region (15), configure the r.f. generator (20) to provide the r.f. treatment signal according to the treatment settings, and activate the r.f. generator (20) to apply the r.f. treatment signal to the inner region (15) for the treatment duration (TD). The invention is based on the insight obtained from multiple measurements made during the creation of microscopic thermal lesions in an inner region of skin by applying r.f. measurement and treatment signals. By analyzing the histological and heating results, a relationship was obtained between the initial impedance (Zo), the dimension of the r.f. treatment electrode (10), and the treatment settings required to obtain a particular skin treatment result. This relationship has been found to be relatively constant for different subjects, different treatment locations on the body and different skin moisture contents. The invention makes it possible to preset or predetermine, i.e. in advance, the treatment duration (TD) and/or the r.f. electrical parameters associated with the r.f. treatment signal accurately enough to avoid undesired skin damage during the treatment. The device can be simpler, as it is no longer essential to continuously monitor the impedance during treatment to determine the onset of undesired skin damage, such as ablation, which is the safety feature known from conventional devices.

    Treatment head for performing a microdermabrasion procedure

    公开(公告)号:US10687851B2

    公开(公告)日:2020-06-23

    申请号:US15513174

    申请日:2015-09-25

    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).

    Treatment device for area and line fractional laser treatment

    公开(公告)号:US10517675B2

    公开(公告)日:2019-12-31

    申请号:US14907696

    申请日:2014-07-30

    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). 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.

    METHOD AND SYSTEM FOR SKIN TREATMENT
    5.
    发明申请
    METHOD AND SYSTEM FOR SKIN TREATMENT 审中-公开
    用于皮肤治疗的方法和系统

    公开(公告)号:US20150126913A1

    公开(公告)日:2015-05-07

    申请号:US14394747

    申请日:2013-04-12

    Abstract: A method of skin tissue (1) treatment is provided which comprises the steps of: determining a treatment zone (9) within the skin tissue below the skin surface (3); modifying an electrical conductance property of at least two first skin tissue portions (11) present on opposite sides of the treatment zone with respect to a direction parallel to the skin surface; and providing radio frequency (RF) energy to the treatment zone via said first skin tissue portions. The step of modifying said first skin tissue portions comprises decreasing electrical impedance for the radiofrequency energy, in particular increasing electrical conductance, of said first skin tissue portions relative to a second skin tissue portion present between said first skin tissue portions; and such that said first skin tissue portions extend into the skin tissue substantially from the skin surface to treatment zone. A system for skin tissue (1) treatment is also provided.

    Abstract translation: 提供一种皮肤组织(1)治疗方法,其包括以下步骤:确定皮肤表面下面的皮肤组织内的治疗区域(9); 相对于平行于皮肤表面的方向改变存在于治疗区的相对侧上的至少两个第一皮肤组织部分(11)的导电性; 以及经由所述第一皮肤组织部分向所述治疗区域提供射频(RF)能量。 修改所述第一皮肤组织部分的步骤包括降低所述第一皮肤组织部分相对于存在于所述第一皮肤组织部分之间的第二皮肤组织部分的射频能量的电阻抗,特别是增加电导率; 并且使得所述第一皮肤组织部分基本上从皮肤表面延伸到皮肤组织到治疗区域。 还提供了一种用于皮肤组织(1)治疗的系统。

    Device for radio-frequency skin treatment

    公开(公告)号:US11324948B2

    公开(公告)日:2022-05-10

    申请号:US15746023

    申请日:2016-07-11

    Abstract: A device for (RF) skin treatment comprising an active electrode having a first skin contact surface for electrical contact with a skin of a user and during use A return electrode having a second skin contact surface for electrical contact with the skin of the user during use. An RF generator to supply an RF treatment voltage between the active electrode and the return electrode to heat the skin below the active electrode. A coupling member arranged on the first skin contact surface comprising an electrically conductive material to improve the electrical coupling of the active electrode to the skin surface. The coupling member comprising a first layer of a first electrically conductive material arranged on the first skin contact surface, and a second layer of a second electrically conductive material, arranged on a side of the first layer remote from the first skin contact surface.

    Device for radio frequency skin treatment

    公开(公告)号:US10946192B2

    公开(公告)日:2021-03-16

    申请号:US15568924

    申请日:2016-04-21

    Abstract: The invention relates to a device (100) for RF skin treatment, comprising an active electrode (1) arranged on an operational side (15) of the device and having a first skin contact surface for contact with a skin of a user, which first skin contact surface has a largest cross-sectional dimension smaller than or equal to 2 mm. The device comprises a return electrode (2) arranged on the operational side (15) of the device and having a second skin contact surface for contact with the skin of the user, wherein an area of the second skin contact surface is at least five times larger than an area of the first skin contact surface. An RF generator (21) is arranged to supply an RF treatment voltage between the active electrode (1) and the return electrode (2) so as to heat a skin region below the active electrode, wherein the RF treatment voltage has a frequency in a range of 100 MHz-3 GHz. By using a frequency of the RF treatment voltage in said range, a depth of thermal lesions voltage is considerably increased as compared to RF skin treatment devices using a comparable RF treatment voltage, but at a much lower frequency.

    Light-based collagen measurement system and a skin treatment system

    公开(公告)号:US10702158B2

    公开(公告)日:2020-07-07

    申请号:US15510263

    申请日:2015-08-28

    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. The measurement system further comprises a comparator, coupled to the first detector and the second detector and configured and arranged to determine a difference between the first light intensity and the second light intensity. When natural collagen is present at the target position, a reflected spectrum of light of the polarized light beam reflected by said natural collagen comprises a plurality of adjacent first and second wavelength ranges, wherein in said first wavelength ranges constructive interference prevails between the polarized light beam and the natural collagen, and wherein in said second wavelength ranges destructive interference prevails between the polarized light beam and the natural collagen.

    Skin treatment device for locally treating skin

    公开(公告)号:US10518103B2

    公开(公告)日:2019-12-31

    申请号:US15129847

    申请日:2015-04-01

    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.

    Measurement device for skin properties and non-invasive treatment device

    公开(公告)号:US10448997B2

    公开(公告)日:2019-10-22

    申请号:US14896760

    申请日:2014-06-25

    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. This results in a skin treatment device (10) being provided that is both effective and delivers reproducible results.

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