摘要:
The present invention discloses a device and a method for controlling growth of hair on human skin with low doses of electromagnetic radiation, and a device for carrying out the method. In the method, radiation of a suitable spectrum is applied to the skin, in one or more pulses of between 1 and 100 ms, and with maximum fluencies on the skin between 1 and 12 J/cm2. By applying such low fluencies and at controlled pulse durations, follicles of the hairs are induced to the catagen phase. This means that the growth of the hairs of those follicles will stop. Although the method is not primarily aimed at immediate hair removal, hairs may be shed subsequently. In any case, further growth may be stopped for prolonged periods of time. The main advantage of the method is that the risk of damage to the skin is minimized.
摘要:
The invention relates to a device (1) for removing hair (46) from skin (30), comprising an optical hair cutting device(12, 14, 20), and a hair and debris removing system. The hair removing system comprises a remover part (36) that mechanically engages the hair (46) in order to remove it after severing, or cutting. The use of mechanical engaging has the advantage that the optical contactless severing method, which by itself is not capable of removing hairs after cutting, is assisted in actual removing the hairs.The debris removing system may comprise a brush (36), a tape or fluid dispenser, etc., and may be assisted by a suction device (48).
摘要:
The present invention relates to a skin treatment device (1, F). The device comprises a radiation source (13) in a housing, such that radiation can be emitted through an exit opening in the housing. It further comprises at least one skin presence sensor (43, 63) capable of measuring the presence of skin (7) in a number of respective positions, and a control unit (37). The control unit (37) is constructed to determine a covered portion of the exit opening (15) from a measurement signal of the skin presence sensor and to restrict emission of the radiation (13) to the covered portion of the exit opening (15), e.g. by modifying the control of a radiation beam manipulator (11), or by controlling radiation-blocking means, such as blinds, in the exit opening (15). The invention provides a more efficient and yet safe treatment device (1, 1′), since a larger exit opening (15) can be selected, while unwanted emission of radiation (13) through uncovered portions of the exit opening (15) is still prevented.
摘要:
The invention relates to a device (1) for hair-growth control of hairs (3), in particular hairs growing from human skin (5). The device (1) has a laser source (7) for generating a laser beam (9) during a pulse time, an optical system (15) for focusing the laser beam into a focal spot (25), and a laser beam manipulator (17) for positioning the focal spot in a target position. According to the invention, a dimension of the focal spot (25) and a power of the generated laser beam (9) are such that, in the focal spot (25), the laser beam has a power density which is above a characteristic threshold value for hair-growth related skin tissue above which, for the pulse time, a laser induced optical breakdown (LIOB) phenomenon occurs in the hair-growth related skin tissue. The LIOB phenomenon results in a number of mechanical effects, such as cavitation and the generation of shock waves, which damage the hair-growth related skin tissue in positions surrounding the LIOB phenomenon. An advantage of the device (1) according to the invention is that the amount of total energy which is necessary to cause trauma and induce (semi-)permanent cessation of hair-growth is at such a level that irritation and damage of the surrounding skin tissue is very limited or even completely prevented.
摘要:
The invention relates to a device (1) for hair-growth control of hairs (3), in particular hairs growing from human skin (5). The device (1) has a laser source (7) for generating a laser beam (9) during a pulse time, an optical system (15) for focusing the laser beam into a focal spot (25), and a laser beam manipulator (17) for positioning the focal spot in a target position. According to the invention, a dimension of the focal spot (25) and a power of the generated laser beam (9) are such that, in the focal spot (25), the laser beam has a power density which is above a characteristic threshold value for hair-growth related skin tissue above which, for the pulse time, a laser induced optical breakdown (LIOB) phenomenon occurs in the hair-growth related skin tissue. The LIOB phenomenon results in a number of mechanical effects, such as cavitation and the generation of shock waves, which damage the hair-growth related skin tissue in positions surrounding the LIOB phenomenon. An advantage of the device (1) according to the invention is that the amount of total energy which is necessary to cause trauma and induce (semi-)permanent cessation of hair-growth is at such a level that irritation and damage of the surrounding skin tissue is very limited or even completely prevented.
摘要:
An optical blade and a hair cutting device is configured to cut a hair near skin of a human body part or animal body part. The optical blade maybe used in a hair cutting device and includes a blade body configured to guide optical radiation, and a tapered end configured to allow the optical radiation to exit the optical blade. The tapered end includes a reflector configured to redirect the optical radiation before it exits the optical blade.
摘要:
Systems and methods for achieving sub-surface, highly spatially selective cardiac ablation by means of laser induced optical breakdown (LIOB) are disclosed. Damage to non-targeted heart and artery/vein tissue is to be minimized according to the present disclosure. A catheter enters the heart, e.g., via a vein, and catheter location is determined/confirmed. Laser pulses are guided through the optical path within the catheter and, at or near the catheter end, a focusing structure is provided that focuses the laser radiation through the non-targeted vein/heart tissue into the targeted tissue. In the focusing structure, laser induced LIOB occurs and related mechanical effects affect the targeted tissue.
摘要:
The invention relates to an optical blade and a hair cutting device, adapted for cutting a hair near skin of a human body part or animal body part. The optical blade (1), especially for use in a hair cutting device, comprises a blade body (3) adapted for guiding optical radiation, and a tapered end (2) adapted for allowing the optical radiation to exit the optical blade (1), wherein the tapered end (2) comprises a reflector adapted for redirecting the optical radiation before it exits the optical blade. In this way the balance of closeness vs. irritation is improved beyond the capabilities of conventional shaving systems and an optical blade is provided which is insensitive to the type of shaving additive used, while the manufacturing of the optical blade is made easier and costs are reduced.
摘要:
The invention provides a skin treatment device comprising a laser source (40) and focusing optics (50), such that a focal spot (18) is positioned in a dermis layer (24) of the skin to be treated. The laser beam (42) is powered and focused (16) such that a LIOB (laser induced optical breakdown) phenomenon is obtained, which affects the skin in order to stimulate re-growth of tissue. This in turn reduces wrinkles (30). The device may comprise wrinkle-determining means (52, 54, 56, 58). The focusing optics (50) may have a numerical aperture of at least 0.4. The invention also provides a corresponding method to treat skin, in particular to reduce wrinkles (30), by providing a focused laser beam (16) that causes LIOB in the dermis layer (24) of the skin. The advantage is that damage to overlaying epidermis layers may be avoided by the use of the very local LIOB phenomenon.
摘要:
The invention relates to a laser scanning system (1) for scanning a laser beam (3) of a hair cutting device, the laser scanning system (1) comprising a laser scanning device (7) for generating a scanning movement of the laser beam and a movable optical device (5) for adjusting and/or focussing the laser beam. According to the invention the laser scanning device (7) comprises an arrangement with at least one movable optical element (11) which is mechanically coupled to the movable optical device (5), and an optical system (13) fixed to the laser scanning device (7), wherein the movable optical element (11) is arranged to inter-relate a position of the movable optical device (5) to a mobile access-position (23) where the laser beam enters the optical system (13), and wherein the optical system (13) is arranged to inter-relate said mobile access-position (23) to at least one corresponding position where the laser beam is incident on the movable optical device (5). The invention further relates to a corresponding hair cutting device (27) and a method of scanning a laser beam (3).