Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
  • A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
  • A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
  • A61B18/203—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser applying laser energy to the outside of the body
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
  • A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
  • A61B2018/00452—Skin
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
  • A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
  • A61B2018/00452—Skin
  • A61B2018/00458—Deeper parts of the skin, e.g. treatment of vascular disorders or port wine stains
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
  • A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
  • A61B2018/00452—Skin
  • A61B2018/0047—Upper parts of the skin, e.g. skin peeling or treatment of wrinkles
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
  • A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
  • A61B2018/00452—Skin
  • A61B2018/00476—Hair follicles
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
  • A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
  • A61B2018/1807—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using light other than laser radiation
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
  • A61N5/00—Radiation therapy
  • A61N5/06—Radiation therapy using light
  • A61N2005/0635—Radiation therapy using light characterised by the body area to be irradiated
  • A61N2005/0643—Applicators, probes irradiating specific body areas in close proximity
  • A61N2005/0644—Handheld applicators
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
  • A61N5/00—Radiation therapy
  • A61N5/06—Radiation therapy using light
  • A61N2005/065—Light sources therefor
  • A61N2005/0651—Diodes
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
  • A61N5/00—Radiation therapy
  • A61N5/06—Radiation therapy using light
  • A61N2005/0658—Radiation therapy using light characterised by the wavelength of light used
  • A61N2005/0661—Radiation therapy using light characterised by the wavelength of light used ultraviolet
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
  • A61N5/00—Radiation therapy
  • A61N5/06—Radiation therapy using light
  • A61N5/0613—Apparatus adapted for a specific treatment
  • A61N5/0616—Skin treatment other than tanning
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
  • A61N5/00—Radiation therapy
  • A61N5/06—Radiation therapy using light
  • A61N5/0613—Apparatus adapted for a specific treatment
  • A61N5/062—Photodynamic therapy, i.e. excitation of an agent

Definitions

• the invention relates to a device for dermatological treatments, with which the skin can be irradiated with electromagnetic radiation.
• Such a device is e.g. known from US 6,273,884 Bl. There, an application head is guided by the surgeon over the skin to be treated.
• WO 2004/004831 A1 also describes a similar system.
• a so-called base unit (base station) is provided and the doctor can connect via a flexible (flexible) line a so-called application head to the base unit.
• a radiation source can be arranged either directly in the application head or in the base unit.
• the flexible cable then contains a light guide in order to transmit the radiation generated in the base unit to the application head.
• the object of the invention is to provide a device for dermatological treatments which enables effective treatment of the skin with radiation with relatively little expenditure on equipment.
• the invention provides a device for dermatological treatment with a base unit to which at least one application head for applying radiation to the skin is connected via lines, wherein the application head has a device for applying a pharmaceutical or care substance to the skin.
• the invention also provides a device for dermatological treatments with a base unit, to which optionally at least a first application head can be connected via flexible lines for applying radiation of an LED to skin, and / or at least a second application head for applying radiation of a laser or a high energy flash lamp on skin.
• the invention thus makes it possible with a single base unit to selectively connect a first application head for irradiating skin with radiation emitted by one or more LEDs and / or connecting a second application head via another flexible conduit so that radiation either from a laser or a high-energy flash lamp can be applied to the skin.
• a doctor or hospital does not necessarily need to acquire and store a separate base unit for each type of radiation. Rather, a single base unit 10 serves to supply and control different application heads, each with different types of electromagnetic radiation.
• epilation hair removal
• PDT photodynamic therapy
• epilation hair removal
• PDT photodynamic therapy
• these treatments require different types of radiation (wavelength, energy, time, ancillary equipment, etc.).
• the operation is simplified in the system according to the invention, since the same base unit is used with the same controls for all applications.
• Another advantage of the system according to the invention is that a user can optionally retrofit application heads for a given base unit. 5
• the basic device according to the invention also makes it possible to connect light sources or laser sources via a fiber coupling, which can then be used for other treatments in the body (eg ENT, surgery, urology, cardiology).
• the LED and / or the laser are each arranged in an assigned application head.
• Another embodiment of the invention provides that the LED and / or the laser and / or the flashlamp are arranged in said base unit, so that the radiation can be transmitted by means of optical fibers to the respectively provided application heads. It is also possible to arrange a plurality of said radiation sources of the same type in each case in the base unit or the application head.
• a narrow-band emitting LED is used.
• Another preferred embodiment provides that the LED emits with intensities that are designed to achieve photobiological effects in the skin.
• LED organic light-emitting diodes
• a further preferred embodiment of the invention provides that the LED or several LEDs emit in the UVA range. It can also be provided LEDs that emit in the UVB range.
• Another variant of the invention provides that in an application head, two or more LEDs are arranged, which emit at different wavelengths, in particular for the homogeneous illumination of a skin area to be treated.
• the laser used according to the invention in addition to the LEDs may in particular be a solid-state laser, a diode laser, and more particularly a pulsed IR laser with intensities each for achieving photothermal effects in the skin.
• the solid-state laser may preferably be a CW laser.
• Another preferred embodiment of the invention provides an application head with means for applying a liquid or cream to the skin.
• Such an application head is also the subject of this application independently and should be disclosed as disclosed and claimed independently of the other features.
• an application head has means for imaging radiation into a predetermined pattern, in particular a narrow line, and for scanning (moving) the pattern over the skin.
• the application head remains stationary and only the one moves in the pattern radiation on the skin over the skin. Also, this embodiment of the invention is to be disclosed as independent independently of the other features of the invention and claimed claimable.
• the base unit and the associated different application heads each have means by which the base unit can "recognize" a connected application head and then correspondingly automatically adjusts the parameters (power supply, optionally radiation control etc.), so that the For example, a transmitter may be provided in each application head which, when the application head is powered, sends a coded signal to the base unit via said flexible lead which the base unit can read to determine the type of application head, then selects the required and associated control parameters for that application head and displays on a display panel what is provided to the controller and what he has to adjust if necessary.
• a transmitter may be provided in each application head which, when the application head is powered, sends a coded signal to the base unit via said flexible lead which the base unit can read to determine the type of application head, then selects the required and associated control parameters for that application head and displays on a display panel what is provided to the controller and what he has to adjust if necessary.
• Figure 1 shows a first embodiment of a device for dermatological treatments with a base unit and an application head
• Figure 2 shows a second embodiment of a device for dermatological treatments with a single base unit, to which two different application heads are connected;
• FIG. 3 shows a further embodiment of a device for dermatological treatments with a base station and an application head, which has a so-called face mask;
• Figure 4 shows a modification of the device according to Figure 2, wherein the light sources are arranged in the application heads;
• Figure 5 shows a modified embodiment of a device for dermatological treatments with an application head in which two different light sources are arranged;
• FIG. 6 shows a further embodiment of a device for dermatological treatments with an application head and optical means arranged therein for imaging radiation into a fine line and means for oscillating movement of the imaged radiation line over skin;
• FIG. 7 shows the device according to FIG. 6 in a different representation without the base device
• Figure 8 shows a further embodiment of a device for dermatological treatments with means for applying cream or liquid to the skin
• FIG. 9 shows a further embodiment of a device for dermatological treatments with a device for spraying liquid or cream-like substances on skin;
• Figure 10 shows a modification of the device according to Figure 8, wherein the light source is arranged in the base unit;
• FIG. 11 shows a further variant of a device for dermatological treatments, wherein an application head has a face mask with spray holes for applying liquid or cream to the skin;
• FIG. 12 shows a modification of the embodiment according to FIG. 9, wherein the light source is arranged in the application head.
• a base unit 10 is connected via a flexible line 12 to an application head 14.
• a light source 16 here for example an LED 16a.
• the radiation 20 emitted by the light source 16 is directed to the skin 18.
• the base unit 10 also includes the power supply for the application head 14, electronic controls for the application head 14 and the base unit itself, and user controls for setting parameters.
• the flexible line 12 includes, in particular electrical conductors, optionally (for example, if, as in embodiments described below, the lo light source is arranged in the base unit) optical fiber, and optionally also coolant lines, etc.
• the light source 16 is accommodated in the application head 14.
• the light source 16 may be, in particular, an LED, a laser, or a high-energy flash lamp.
• three or more different application heads 14 can be provided correspondingly, which can optionally be connected to the base unit 10 and receive the required supply and control signals from the base unit.
• Each of the various application heads 14 is thus connected via a connection point provided on the base unit 10 via the respective
• FIG. 2 shows a modified embodiment with a base unit 10, in which an LED 16a is arranged as light source and a laser 16b as further light source.
• the emitted 5 th radiation of the LED 16a and the laser 16b are transmitted to the applicator via respectively associated flexible lines 12a and 12b. This makes it possible to apply different radiations 20a, 20b simultaneously or sequentially to the skin 18.
• FIG. 1 shows a modification of the exemplary embodiment according to FIG. 1, in which a so-called face mask is formed on the application head 14.
• face mask Larger parts of the body can be accurately irradiated with a face mask, the term "face mask” not only covering the face in FIG meaning, but can also correspond to other body parts that should be treated.
• the mask is thus at least approximately simulated to the shape of the body part to be treated and thus allows an accurate and reproducible positioning of the application head.
• Several light sources can be distributed in the face mask. ordered, in particular LEDs or lamps. Otherwise, the embodiment according to FIG. 3 corresponds to the variants according to FIGS. 1 and 2.
• FIG. 4 shows a modification of the exemplary embodiment according to FIG. 2 in that the light sources from the base unit 10 are laid in the application heads 14a, 14b.
• One or more LEDs 16a are arranged in the application head 14a, and one or more lasers 16b are arranged in the application head 14b. Otherwise, the embodiments correspond to the embodiments described above.
• FIG. 5 shows a variant of a device for dermatological treatments in which two different light sources are arranged in an application head 14, namely firstly an LED 16a (or several LEDs) and secondly one (or more) lasers 16b.
• the two light sources can be activated either individually or together.
• an IR diode laser that emits at 808 or 980 nm. Such radiation is well suited for epilation, depending on the wavelength chosen for fair skin or dark skin.
• UV LEDs for example, UV LEDs can be selected which emit at 308 and 370 nm, respectively. This radiation is well suited for the treatment of autoimmune weaknesses.
• blue-emitting LEDs for the treatment of acne or for PDT.
• Yellow emitting LEDs for example, 590 nm
• Red emitting LEDs 640 nm
• the application heads described above may also be provided with means to determine skin parameters, for example, temperature, skin tanning, melanin content, thickness of the epidermis, etc. Also, means may be provided for producing images of the treatment surface.
• Figure 6 shows a particular embodiment of an application head 14 ', which is provided with optical and electro-optical means to image the emitted by him electromagnetic radiation 20' on the skin 18 in a narrow line.
• the line may, for example, have transverse dimensions of 0.5 to 5 mm, in particular 0.5 to 2 mm. Its longitudinal dimension is a multiple of the transverse dimension, for example, 2 to 20 times the transverse dimension.
• FIG. 7 shows the application head 14 'of FIG. 1 seen from a different perspective in the direction of the surface of the skin 18 to be irradiated.
• the optical means in the application head 14 ' produce a radiation 20' which images a line-shaped pattern 24 on the skin 18.
• the bar 24 is scanned in the direction of the arrow P.
• the stroke 24 thus retains its shape and dimension during scanning and is moved over the skin 18 in the direction of the arrow.
• the already treated portion of the skin is designated 18a in FIG. 7 and the portion of the skin still to be treated 18b.
• This arrangement makes it possible to operate with relatively small spot sizes without reducing the depth effect required for follicle heating.
• the continuous irradiation causes sufficient heating and accumulation of heat in the skin.
• Relatively weaker CW lasers can be used and optimally exploited. Focusing in one stroke also reduces the required CW power.
• Diode lasers and solid-state lasers can be used. The variants of the arrangement of the light sources in the system described with reference to FIGS. 1 to 5 are possible.
• laser light with wavelengths in the range between 650 and 1200 nm is preferably used.
• stroke 24 has dimensions of 0.3 cm x 1 cm
• the geometric parameters of the scan may be adjusted to scan, for example, a skin treatment area of 5 cm x 1 cm, the dimension of lo 1 cm corresponds to that of the longitudinal dimension of the stroke 24.
• the scan is controlled so that the treatment area is continuously swept by the substantially smaller bar 24 relative to it, i. the light is not switched on and off during scanning.
• very long pulse durations for example pulse durations in the range of more than 200 i5 ms to 2 s are used, and light is continuously applied to the skin during these pulse durations.
• the continuous scanning is controlled so that a tissue site is irradiated with light only for about 5 to 50 ms to avoid burns.
• the other relevant parameters such as pulse duration, fluence and scan range can be selected by the user taking into account the above-mentioned boundary conditions.
• Suitable light sources are lasers, in particular CW-radiating lasers, such as diode lasers, but also LEDs including OLEDs. Also suitable are lamps whose light can be focused in the manner described. 5
• hair follicles in deeper skin layers can be reached and heated.
• a quasi CW operation is sufficient, ie short pulse durations greater than 1 ms can be used with comparatively short pulse pauses which are smaller than the pulses themselves or very short pulses less than 0.5 ms can be used with pulse pauses in the same time range.
• the devices described above preferably have means with which the amounts of energy used for the cooling and / or light generation can be changed in time such that the average and / or peak light powers are maximized for a given current input power (this is the so-called connected value).
• FIG. 8 shows an embodiment with a base device 10 and an applicator 14 and a flexible line 12 'for transferring a cream or a liquid from a reservoir 34 to the applicator 14.
• the applicator 14 is preceded by a drop dispenser 26 which has a drop 32 the skin 18 applies.
• the application head thus allows the combination of a light treatment with topically applied i5 pharmaceutical or nourishing substances.
• the device makes it possible to apply substances in liquid form, in particular creams, ointments or sprays, or in gaseous form to the skin shortly before, during or shortly after a light treatment in order to promote the treatment or to reduce side effects.
• cooling air can also be applied to the skin via a line analogous to the flexible line 12 '. 0
• FIG. 9 shows a variant with a spraying device. From a nozzle 38 spray 36 is applied to the skin 18.
• FIG. 10 shows a modification of the device according to FIG. 8 with a light source 16 in the base unit 10.
• FIG. 11 shows an embodiment of an application head 14 with a so-called face mask (see above).
• Pharmaceutical and / or nourishing substances can be applied to the skin in a controlled manner in terms of time and quantity via a large number of nozzles 38 which are distributed over the face mask over a large area.
• FIG. 12 shows a modification of the exemplary embodiment according to FIG. 8 with a spraying device (nozzle 38) instead of the one liquid or a drop dispensing directly onto the skin.
• the reservoir for the caring or pharmaceutically active substance in a modification of the above description, can also be arranged in the application head or else in a face mask itself. In these cases can be dispensed with the line 12 '.

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• Physics & Mathematics (AREA)
• Health & Medical Sciences (AREA)
• Surgery (AREA)
• Optics & Photonics (AREA)
• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Molecular Biology (AREA)
• Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
• Electromagnetism (AREA)
• Biomedical Technology (AREA)
• Heart & Thoracic Surgery (AREA)
• Medical Informatics (AREA)
• Otolaryngology (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Radiation-Therapy Devices (AREA)
• Surgical Instruments (AREA)

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Publications (2)

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• 2006
  • 2006-10-10 EP EP06021252A patent/EP1911410A1/de not_active Withdrawn
• 2007
  • 2007-10-09 WO PCT/EP2007/008769 patent/WO2008043520A2/de not_active Ceased
  • 2007-10-09 JP JP2009531761A patent/JP2010505566A/ja active Pending
  • 2007-10-09 US US12/444,831 patent/US20100114007A1/en not_active Abandoned
  • 2007-10-09 CN CN2007800378846A patent/CN101610730B/zh not_active Expired - Fee Related

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