US20110213446A1 - Fungal Infection Therapy with Low Level Laser - Google Patents

Fungal Infection Therapy with Low Level Laser Download PDF

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Publication number
US20110213446A1
US20110213446A1 US13/039,930 US201113039930A US2011213446A1 US 20110213446 A1 US20110213446 A1 US 20110213446A1 US 201113039930 A US201113039930 A US 201113039930A US 2011213446 A1 US2011213446 A1 US 2011213446A1
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United States
Prior art keywords
laser
housing
laser device
shell
beam spot
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US13/039,930
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English (en)
Inventor
Kevin B. Tucek
Steven C. Shanks
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Erchonia Corp
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Erchonia Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US09/932,907 external-priority patent/US6746473B2/en
Priority claimed from US10/772,738 external-priority patent/US7118588B2/en
Priority claimed from US10/976,581 external-priority patent/US7922751B2/en
Priority claimed from US11/409,408 external-priority patent/US7947067B2/en
Application filed by Erchonia Corp filed Critical Erchonia Corp
Priority to US13/039,930 priority Critical patent/US20110213446A1/en
Assigned to ERCHONIA CORPORATION reassignment ERCHONIA CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SHANKS, STEVEN C., TUCEK, KEVIN B.
Priority to US13/048,715 priority patent/US20110224759A1/en
Priority to MX2012010683A priority patent/MX2012010683A/es
Priority to TW100108968A priority patent/TW201138888A/zh
Priority to CA2792635A priority patent/CA2792635A1/en
Priority to JP2013500192A priority patent/JP2013521948A/ja
Priority to TW100108965A priority patent/TW201201877A/zh
Priority to CN2011800244585A priority patent/CN102883776A/zh
Priority to KR1020127026943A priority patent/KR20130059331A/ko
Priority to PCT/US2011/028729 priority patent/WO2011116134A2/en
Priority to RU2012138118/14A priority patent/RU2012138118A/ru
Priority to PCT/US2011/028745 priority patent/WO2011116149A2/en
Priority to EP11756959.0A priority patent/EP2547399A4/en
Priority to AU2011227291A priority patent/AU2011227291A1/en
Priority to BR112012023373A priority patent/BR112012023373A2/pt
Publication of US20110213446A1 publication Critical patent/US20110213446A1/en
Priority to US13/344,257 priority patent/US8814924B2/en
Priority to US13/400,205 priority patent/US8409264B2/en
Priority to ZA2012/06571A priority patent/ZA201206571B/en
Abandoned legal-status Critical Current

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    • 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
    • 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
    • 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
    • A61N5/067—Radiation therapy using light using laser light
    • 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
    • A61B2018/2035—Beam shaping or redirecting; Optical components therefor
    • A61B2018/20351—Scanning mechanisms
    • 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
    • A61B2018/2035—Beam shaping or redirecting; Optical components therefor
    • A61B2018/205547—Controller with specific architecture or programmatic algorithm for directing scan path, spot size or shape, or spot intensity, fluence or irradiance
    • 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
    • A61N2005/0642—Irradiating part of the body at a certain distance
    • 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
    • A61N2005/0659—Radiation therapy using light characterised by the wavelength of light used infrared

Definitions

  • This invention relates generally to therapies with a laser device. More particularly, this invention relates to methods and devices for treating a fungal infection with low level laser energy.
  • Onychomycosis is a fungal infection of toenails or fingernails.
  • the infection may encompass any component of the nail, including the nail bed, nail plate, or nail matrix.
  • OM can become very unsightly and may produce pain, discomfort, and disfigurement, all of which can lead to physical and occupational limitations.
  • a disorder such as OM may have a detrimental effect on an individual's quality of life, affecting his psychosocial and emotional well-being.
  • the main subtypes of OM are distal lateral subungual OM (“DLSO”), white superficial OM (“WSO”), proximal subungual OM (“PSO”), endonyx OM (“EO”), and candidal OM. Patients may have a combination of these subtypes.
  • Total dystrophic OM refers to the most advanced form of any subtype.
  • the onset of fungal infection is caused by three main classes of fungi: dermatophytes, yeasts, and nondermatophyte molds.
  • the most common cause of OM worldwide is due to the infection of dermatophytes, including the genera Epidermophyton, Microsporum, and Trichophyton.
  • LLLT Low level laser therapy
  • LLLT improves wound healing, reduces edema, and relieves pain of various etiologies, including successful application to wound and surgical sites to reduce inflammation and pain.
  • LLLT is also used in the treatment and repair of injured muscles and tendons.
  • LLLT utilizes low level laser energy, wherein the treatment has a dose rate that causes no immediate detectable temperature rise of the treated tissue and no macroscopically visible changes in tissue structure. Consequently, the treated and surrounding tissue is not heated or damaged, and the patient feels no sensation during treatment.
  • Some LLLT applications have effectively photodestroyed a targeted biological element under suitable treatment conditions.
  • LLLT may be used in fat reduction to create a transition pore in fat cell walls, through which fat is released into the interstitial space.
  • laser therapy There are a number of variables in laser therapy, including the wavelength of the laser beam, the area impinged by the laser beam, the shape of the beam spot when it impinges the area, the power of the laser source, the intensity or fluence of the laser energy, the laser pulse width, and the treatment duration. These variables typically depend heavily on the tissue characteristics of the specific patient, and the success of each therapy depends on the relationship and combination of these variables. For example, fat reduction may be facilitated with one regimen utilizing a given power, wavelength, and treatment duration, whereas pain may be treated with a regimen utilizing a different wavelength and treatment duration, and inflammation a third regimen. Specific devices may be used for each type of therapy.
  • an object of this invention is to provide laser therapy devices and methods of using the devices to treat OM and other fungal infections of the fingernails or toenails.
  • a further object of the invention is to incite photodestruction of fungal bacteria without adversely affecting surrounding healthy tissue. It is another object of this invention to destroy fungal bacteria using laser light in multiple different pulse widths. It is a particular object of this invention to provide methods of using a compact, standalone laser device to provide low level laser therapy which can be used to treat OM and other fungal infections. It is another particular object of this invention to provide methods of using a hand-held therapeutic laser device to provide low level laser therapy which can be used to treat OM and other fungal infections.
  • This invention is a method of treating OM using a laser device that can simultaneously emit one or more wavelengths of laser light.
  • the device enables laser light of one or more pulse widths, one or more beam shapes, and one or more spot sizes to be applied externally to the affected area of a patient's body.
  • the laser light may be continuous or pulsed.
  • the device may include multiple laser sources. In the preferred embodiment, two semiconductor diode laser sources simultaneously provide two separate laser beams, one laser beam producing red laser light and the other producing violet laser light. Most preferably, the laser sources are contained in a portable, compact, free-standing laser device into which the patient places the infected hand or foot.
  • the laser device is activated and laser energy is scanned across the infected area of the patient's first hand or foot.
  • the laser energy source may be nearly touching the skin or held at a distance of up to about 10 inches, or further, from the nail surface.
  • the laser energy may be applied for a duration of about 10 minutes to about 30 minutes on the patient's first hand or foot.
  • the application may be repeated on another infected appendage if desired.
  • the entire treatment may be repeated after the first application.
  • the patient may apply a topical anti-fungal medication for 12 weeks to prevent re-infection.
  • FIG. 1 is an electrical and electromagnetic schematic illustration of the preferred embodiment of the present invention.
  • FIG. 2 is a schematic view of the optical arrangement of the linear spot shape of the preferred embodiment.
  • FIG. 3 is a perspective view of a scanning head optical arrangement of the present invention.
  • FIG. 4 is a perspective view of the scanning head of FIG. 3 , exploded along axes a and b.
  • FIG. 4 a is a perspective view of the universal carriage shown in FIG. 3 holding a prism instead of a rod lens.
  • FIG. 5 is a perspective view showing application of low-level laser radiation using a hand-held wand.
  • FIG. 6 is a perspective view of a portable, floor-supported laser device for use with the present invention.
  • FIG. 7 is a perspective view of a wall-mounted laser device for use with the present invention.
  • FIG. 8 a is an exploded perspective view of a portable, compact, free-standing laser device for use with the present invention.
  • FIG. 8 b is a front perspective view of the scanner assembly of the laser device of FIG. 8 a.
  • FIG. 9 is a front right perspective view of the laser device of FIG. 8 a.
  • FIG. 10 is a right side view of the laser device of FIGS. 8 a and 9 , showing the door open and a patient's foot inserted for treatment.
  • FIG. 11 is a perspective view showing application of low-level laser radiation using the laser device of FIG. 7 or 8 a - 10 .
  • FIG. 1 shows, schematically, the preferred electrical and electromagnetic arrangement of the laser device, in which a first laser energy source 11 and a second laser energy source 12 are connected to a power source 14 .
  • the power source 14 preferably provides direct current, such as that provided by a battery, but may instead provide alternating current, such as that provided by conventional mains power, that is then converted to direct current.
  • Switches 15 , 16 are connected to the laser energy sources 11 , 12 respectively and control the period of time the laser light is generated. These laser energy sources can be energized independently or simultaneously which, throughout this specification, refers to acts occurring at generally the same time.
  • the laser energy sources 11 , 12 may be any source suitable for LLLT, including Helium-Neon lasers having a 632 nm wavelength and either solid state or tunable semiconductor laser diodes with a range of wavelengths between 400-800 nm.
  • the laser energy sources 11 , 12 are semiconductor laser diodes, one of which produces light in the red range of the visible spectrum, having a wavelength of about 635 nm, while the other produces light in the violet range at a wavelength of about 405 nm.
  • Other suitable wavelengths include 440 nm, 510 nm, and 530 nm, and the wavelengths may be used in different combinations.
  • the preferred laser energy sources 11 , 12 emit less than one watt of power each. Diodes of various other wattages may also be employed to achieve the desired laser energy for the given regimen.
  • the laser light is a continuous beam.
  • the laser light may be pulsed.
  • Pulse duration controllers 21 , 22 are connected to the laser energy sources 11 , 12 respectively, to form a control circuit that controls the duration of each pulse of laser light emitted, referred to herein as the pulse width. Pulse widths from 0 to 100,000 Hz may be employed to achieve the desired effect on the fungus without adversely affecting the patient's tissue.
  • the treatment goal is to deliver laser energy to the infected area utilizing a pulse width short enough to therapeutically effective against fungi while avoiding damage to adjacent tissue or laser-induced sensation in the patient's nerves.
  • Each laser beam 41 , 42 exits the corresponding laser energy source 11 , 12 and is shone through optical arrangements 31 , 32 , respectively, that produce beam spots 1 , 2 respectively of certain shapes.
  • the beam spot is the cross-sectional shape and size of the emitted beam as it impinges the target area.
  • a laser beam of circular cross-section creates a circular beam spot as the laser light impinges the treatment area. If the laser beam is in the visible range, a circular beam spot can be seen on the treatment area of substantially the same diameter as the laser beam emitted from the laser energy source, provided the optical arrangement does not manipulate the laser beam.
  • the laser beam can be manipulated, such as by collimation, refraction, masking, or another method of reshaping a laser beam, in order to produce beam spots of different sizes and shapes.
  • the laser beams 41 , 42 are shaped to produce linear beam spots on the patient.
  • FIG. 2 illustrates an example optical arrangement 31 that includes a collimating lens 34 and a line generating prism 36 .
  • the collimating lens 34 and the line generating prism 36 are disposed in serial relation to the laser energy source 11 .
  • the collimating lens 34 and the line generating prism 36 receive and transform the generated beam of laser light into the line of laser light L.
  • a suitable electrical or mechanical arrangement could be substituted for the optical arrangement 31 .
  • the preferred optical arrangement 31 is a scanning head used to create a beam spot on the treatment area.
  • the laser beam 41 emitted from the laser source 11 is directed to the scanning head, which comprises a hollow spindle 20 through which the laser beam 41 is conveyed.
  • a rotatable carriage 18 holds an optical element upon which the laser beam 41 is incident.
  • the laser beam 41 , spindle 20 and carriage 18 are substantially co-axial.
  • a linear first beam spot L with it centerpoint coaxial with the spindle 20 is generated by directing the laser beam 41 to an optical element.
  • a rod lens 35 is preferred as the optical element, but a prism 36 , as shown in FIG.
  • the first beam spot may be another circular or non-circular shape, such as a filled or outlined polygon, a multi-pointed star, or a series of parallel or crossing lines.
  • the linear beam spot L rotates too, becoming, in essence, a rotating diameter of an apparent circular second beam spot.
  • the carriage 18 is rotated through at least 180°, the linear first beam spot L sweeps through a complete circle.
  • the carriage 18 is rotated slowly so that the beam spots 1 , 2 impinge the same treatment area in an alternating pattern.
  • the carriage 18 may automatically rotate very quickly, causing the laser beam 41 to appear to create a substantially circular second beam spot on the patient's skin.
  • the shape is actually the result of the scanning light diameter sweeping from location to location at a speed that makes the motion nearly imperceptible to the human eye. The longer the line, the larger the beam spot.
  • the carriage 18 is rotated with a drive assembly.
  • the drive assembly is preferably a main drive gear 26 which is mated with a minor drive gear 27 .
  • the minor drive gear 27 is driven by a main drive motor 25 .
  • the carriage 18 rotates around the axis as the main drive gear 26 is turned.
  • the laser beam 41 from laser energy source 11 passes through the hollow spindle 20 and strikes an optical element which deflects the laser beam into a linear beam spot L that, in combination with the rotation, appears as a circular beam spot.
  • the laser beam 41 remains coaxial with the hollow spindle 20 through the optical element, so that the center of the beam spot created by the optical element is on the axis of the hollow spindle 20 .
  • the drive assembly may also be controlled by micromanipulators according to signals received from a control pad 57 , shown in FIGS. 6 and 7 , which is further comprised of various discrete circuits for controlling at least the scanning head and may further control one or more of the laser energy sources, power source, switches, and pulse duration controllers, as is known in the art.
  • the control pad 57 includes a microprocessor programmed to operate in various modes.
  • the laser light may be directed to the desired area on a patient using a hand-held wand 39 .
  • the wand 39 may be a housing comprising an elongated hollow tube defining an interior cavity.
  • the laser energy source 11 and optical arrangement 31 may be mounted in the wand's 39 interior cavity, although the laser energy source could be remotely located and the laser light conducted by fiber optics to the wand 39 .
  • the wand 39 may take on any shape that enables the laser light to be directed as needed such as tubular, T-shaped, substantially spherical, or rectangular.
  • the wand 39 may contain the power supply (for example a battery) or the power supply may be remote with power supplied by an electrical cable. As shown in FIG.
  • the laser sources 11 , 12 may be mounted inside the housing of a single wand 39 .
  • multiple wands 39 containing one or more laser sources may be provided.
  • scanning heads are used as the optical arrangement 31 , a scanning head may be contained wholly within each housing or attached separately to the end of each wand 39 .
  • the laser device operates in a stand-alone configuration.
  • the laser device may be supported by a support structure such as the wall or a portable stand that rests on the floor or table.
  • This stand-alone arrangement enables a patient to be scanned by the laser beam without using a handheld wand 39 .
  • two housings 49 , 50 are attached to an arm 48 with connectors 44 , 45 , respectively.
  • the laser device may have a single housing or more than two housings, depending on the desired number of laser energy sources to be used.
  • each housing 49 , 50 may contain one or more laser energy sources 11 , 12 , one or more optical arrangements 31 , 32 , and a power supply.
  • the connectors 44 , 45 may be rigid or, preferably, flexible, so that the housings 49 , 50 can be moved to any desired position.
  • the arm 48 may be articulated for additional control over the position of the lasers.
  • the arm 48 is attached to a base 46 having wheels 47 such that the device can be moved to any desired position and then stay substantially stationary while treatment is occurring. This is particularly convenient for patients lying on a table or sitting in wheelchair.
  • the control pad 57 is in electrical connection with the housings 49 , 50 and may be mounted on the arm 48 , in another location, or may operate as a remote control using radio frequencies or other methods known in the art.
  • a three-housing assembly 56 is attached to a wall-mounted arm 51 which is affixed to the wall 52 in ways known in the art such that it can be moved to any desired position and then remain substantially stationary while therapy is occurring.
  • the arm may be articulated for additional control over the position of the lasers.
  • the control pad 57 is in electrical connection with the housings 53 , 54 , 55 and may be mounted on the wall.
  • the control pad 57 can be mounted elsewhere or can operate as a remote control using radio frequencies or other methods known in the art.
  • the assembly 56 is attached to the arm 51 in ways known in the art such that it can be moved to any desired position.
  • the housings 53 , 54 , 55 are attached to the assembly 56 so that each can be moved to a desired position.
  • FIGS. 8 a - 10 illustrate the preferred laser device 100 , which is compact, portable, and free-standing.
  • the laser device 100 is stationary during treatment, providing more uniform application of laser energy than a handheld device and occupying less space than known free-standing LLLT devices.
  • Two housings 49 , 50 are mounted in a shell 90 , into which the patient places one or both feet or hands for treatment. It will be understood that, while the preferred laser device 100 includes two housings 49 , 50 for emitting laser light, a similarly-functioning device may be assembled using one, three, or more housings according to the desired treatment parameters.
  • the preferred laser device 100 preferably occupies less than two cubic feet of space.
  • the shell 90 has dimensions of about 15.5 inches in height, 10 inches in width, and 10.5 inches in depth, the depth being measured from the front to the back of the shell 90 .
  • the compact size of the shell 90 allows it to be placed on a floor or countertop in a treatment room where little free space is available. Additionally, the small device 100 may be easily transported between rooms.
  • the shell 90 comprises a back shell 91 and front shell 92 that attach to each other and to a shell base 93 to define an interior space.
  • the back shell 91 , front shell 92 , and shell base 93 may made of a molded polymer, or of metal such as aluminum or steel.
  • the back shell 91 and front shell 92 are medical-grade polymers, while the shell base 93 is aluminum so that the laser device 100 is bottom-heavy and resistant to being knocked over.
  • the back shell 91 , front shell 92 , and shell base 93 may be permanently or removably attached to each other, by adhesive or non-adhesive means.
  • metal or plastic screws are used to attach the back shell 91 , front shell 92 , and shell base 93 .
  • a handle 86 may be attached to the shell 90 , preferably at the top of the back shell 91 , for ease of portability.
  • a plurality of height-adjustable, semi-rigid feet 95 are attached to the bottom of the shell base 93 . The feet 95 protect the shell base 93 from scratches and other damage, and allow the laser device 100 to be balanced on a surface that is not completely planar.
  • a door 73 covers an access port 71 disposed through the shell 90 .
  • the access port 71 may be in the front, back, or side of the shell 90 , but preferably is disposed through the front shell 92 such that the patient's foot or hand may pass through the access port 71 into the shell 90 and rest on the shell base 93 , as illustrated, for treatment.
  • the access port 71 is no larger than necessary to receive a substantial portion of one of the patient's feet, and is most preferably about 6.5 inches wide, about 5 inches tall, and about 8 inches deep, conforming closely to the size of the patient's hand or foot.
  • the shell 90 provides a substantial shield from contaminating light during the procedure; that is, the laser energy may be applied to the infected area in near darkness.
  • the door 73 is closed when the laser device 100 is not in use, and open to allow the patient to place one or both feet or hands into the device 100 .
  • the door 73 fits into a recess 94 in the shell base 93 , so that the outer surface of the door is substantially flush with the outer surface of the front shell 92 when the door 73 is closed.
  • the preferred door 73 then attaches to the shell base 93 with hinges 72 at the bottom of the door 73 .
  • the preferred door 73 also has one or more knobs 96 that serve a dual purpose of providing a surface to grab for opening the door 73 , and contacting the surface on which the laser device 100 is placed such that the door 73 is maintained substantially parallel to the shell base 93 when open. See FIG. 10 .
  • the door 73 may then function as an extension of the top surface of the shell base 93 , on which the patient's feet or hands are placed.
  • the housings 49 , 50 are part of a scanning assembly 70 that is substantially, preferably fully, enclosed in the shell 90 .
  • a programmable logic circuit (“PLC”) 76 electrically receives one or more input parameters related to the treatment to be performed.
  • the input parameters may be received before, during, or after the treatment, and may be stored in the PLC 76 as a preset treatment.
  • the PLC 76 uses the desired treatment parameters to control the operations of the housings 49 , 50 .
  • the operations of the housings 49 , 50 that may be controlled include: overall duration of laser emission from each housing 49 , 50 ; pulse width, variation of pulse width, and duration of each pulse width application; rotational speed and direction of carriage 18 , if any; and area to scan.
  • a voltage regulator 78 manages power conversion to direct current, if needed, and regulates the voltage applied to the PLC 76 , touch screen 80 and housings 49 , 50 . Typically, this voltage management includes reducing the voltage from mains-standard 120V or 240V to 24V for the PLC 76 and touch screen 80 , and 5-8V to control the laser energy sources 11 , 12 and any drive motors for rotating or oscillating optical arrangements 31 , 32 .
  • the voltage regulator 78 may be a component attached to the PCB 77 as described below, or may be integrated into the PLC 76 .
  • the housings 49 , 50 are connected to a laser angle bridge 74 that sets the angle of each housing 49 , 50 with respect to vertical.
  • the housings 49 , 50 are each offset about 15 degrees from vertical so that the laser beams 41 , 42 converge at a point about 5 inches below the housings 49 , 50 .
  • One or more non-conductive plates 75 isolate the high-voltage components, such as the PLC 76 , from the patient.
  • the plates 75 are preferably plastic and most preferably DELRIN®.
  • a mounting plate 79 typically made of reflective aluminum, separates the PLC 76 and the electronic components of the interface described below from the housings 49 , 50 , protecting the PLC 76 and the electronic components from the emitted laser light.
  • An interface configured to display treatment options to a device 100 operator and receive input from the operator, may be mounted in the shell 90 , in electronic communication with the scanning assembly 70 .
  • electronic components mounted on a printed circuit board (“PCB”) 77 electrically receive input parameters.
  • the electronic components may include transistors, resistors, capacitors, conductive traces, and other components need to form a circuit configured to receive input and transmit it to the PLC 76 .
  • An input device is electrically connected to either the PLC 76 or the components of the PCB 77 , and receives the input from the operator.
  • the input device is attached by universal serial bus (“USB”) connection to the PLC 76 .
  • the input device may be a keyboard, mouse, touch screen, microphone, or other input device.
  • the input device is an integrated touch screen 80 that displays options to the operator and receives the operator's selections.
  • the touch screen 80 is attached with interface mounts 83 installed in the front shell 92 above the door 73 .
  • the touch screen 80 or other combined or separate input and output devices may be remote from the shell.
  • the touch screen 80 may receive input, which preferably comprises treatment parameters, before, after, or during treatment.
  • the laser device 100 may require a key to be inserted before the device may be used. The allows usage to be monitored through key-checkout procedures, and also provides an emergency shutoff as required in the United States for certain alternating current-powered devices.
  • the key is inserted into a keyswitch 84 mounted in a keyswitch mount 85 near the touch screen 80 .
  • a power module 81 connects the device to a wall outlet or alternatively may be a battery that supplies power to the device 100 .
  • the power module 81 is electrically connected to the voltage regulator 78 .
  • parameters may be entered to program the wand 39 or any one of the housings 49 , 50 , 53 , 54 , 55 in a required manner to achieve any desired path upon the infected area of a patient.
  • the device may be programmed to direct the laser output into some regions more than others so that one region may have greater treatment than another region.
  • the scan areas of multiple optical arrangements 31 , 32 may overlap, whether they emanate from the same housing or separate housings. This may be particularly useful for stand-alone apparatuses using the present invention, such as those illustrated in FIGS. 6-10 .
  • the invention is not limited to any particular programmed operation mode, but by way of example the following modes of operation are available:
  • the laser device employs two laser diodes each with an optical arrangement such that two substantially linear spot shapes are achieved. See FIG. 11 .
  • the preferred laser device 100 has a first laser energy source 11 that emits a laser beam having a 635 nm wavelength, and a second laser energy source 12 that emits a laser beam having a 405 nm wavelength.
  • the device may utilize as many laser energy sources, wavelengths, and optical arrangements as necessary to obtain the desired emissions and spot shapes. For example, more than two lasers may be used and optical arrangements aligned such that two or more of the laser beams have substantially similar spot shapes and are co-incident where they impinge the patient's skin.
  • the disclosed laser device may, through proper application, reduce or eliminate fungi in the infected area by inciting certain processes within the fungal cells.
  • the mitochondrial membrane of fungal cells contains cytochrome c oxidase, an identified photoacceptor molecule.
  • Laser light from LLLT reacts with this molecule, inducing the release of highly reactive superoxides that are toxic to the fungal cell.
  • laser therapy has been shown to promote superoxide dismutase (“SOD”), an enzyme responsible for the destruction of pathogens, bacteria, and related foreign organisms.
  • SOD superoxide dismutase
  • Extracellular release of low levels of mediators associated with SOD can increase the expression of chemokines, cytokines, and endothelial leukocyte adhesion molecules, amplifying the cascade that elicits the photodestructive response within the fungal cells.
  • the treatment method is performed on the patient's bare infected hands or feet.
  • the present description uses feet and toenails to describe the method, but it will be understood that the same treatment may be used on infected hands and fingernails.
  • the treatment is performed on each foot individually.
  • the foot is placed flat on the floor or on a platform, with all infected nails being exposed.
  • the laser device is positioned over the infected area.
  • the wand 39 may be positioned so that it is touching the surface of the infected nail, or it may be held at a distance of up to about 6 inches from the infected nail.
  • a standalone device such as those illustrated in FIGS.
  • the housings 49 , 50 are preferably positioned about 4-6 inches above the infected area, most preferably about 5 inches above the infected area. In other standalone devices, the housings may be positioned about 10 inches or more from the infected surface.
  • the device is activated and then laser light is moved slowly over the infected areas, ensuring that each receives proper photonic exposure. The laser light is preferably applied for between about 10 minutes and about 30 minutes. If both feet are infected, the treatment is repeated for the other foot.
  • a therapeutic amount of laser energy is applied to halt fungal cell reproduction.
  • the appropriate therapeutic amount may depend on one or more of several factors, including: whether the infection is in the nail bed, nail plate, nail matrix, or other part of the nail; the depth and area of the infection; the density of fungal cells in the infected area; the type of fungal cells; the thickness of the nail; the concurrent use of photoreceptive topical medications, and other factors.
  • the extent of the infection is assessed before beginning laser energy application, so that treatment parameters may be determined.
  • the patient may receive a dose of laser energy that is known to be generally effective for most instances of fungal infection, and the nail bed may be allowed to grow for a period of about 1-12 months to determine if the initial dose was effective.
  • the generally-effective dose may be repeated, with or without adjusted parameters, if new nail bed growth reveals that the infection persists.
  • Laser energy applications of about 0.5 joules per square centimeter or more may be effective, but preferably between 0.5 and 15 joules per square centimeter is applied to each foot during the treatment.
  • the generally effective dose has approximately the following parameters: 12-minute application of laser energy, provided by a 405 nm beam and a 635 nm beam, scanned over the area such that about 10-15 joules per square centimeter total energy is applied.
  • a single application is sufficient, but more than one application may improve the speed at which the infected nail heals.
  • the described application is repeated once, about five weeks after the first application.
  • the patient may apply a photoreceptive topical medication that is activated by the laser energy and helps inhibit fungal cell reproduction.
  • the patient may apply a topical anti-fungal medication to the infected area for 12 weeks to prevent re-infection. Successful treatment will have halted fungal cell reproduction, so that the newly-grown nail is infection free.
  • the method results in improved nail growth rate, nail texture, and clarity, and reduced deformity.

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US13/039,930 2001-03-02 2011-03-03 Fungal Infection Therapy with Low Level Laser Abandoned US20110213446A1 (en)

Priority Applications (18)

Application Number Priority Date Filing Date Title
US13/039,930 US20110213446A1 (en) 2001-03-02 2011-03-03 Fungal Infection Therapy with Low Level Laser
US13/048,715 US20110224759A1 (en) 2001-03-02 2011-03-15 Fungal Infection Therapy with Low Level Laser
RU2012138118/14A RU2012138118A (ru) 2010-03-17 2011-03-16 Терапия грибковой инфекции с помощью низко-интенсивного лазера
PCT/US2011/028745 WO2011116149A2 (en) 2010-03-17 2011-03-16 Fungal infection therapy with low level laser
EP11756959.0A EP2547399A4 (en) 2010-03-17 2011-03-16 PILZINFECTION THERAPY WITH LOW-LEVEL LASER
TW100108968A TW201138888A (en) 2010-03-17 2011-03-16 Fungal infection therapy with low level laser
BR112012023373A BR112012023373A2 (pt) 2010-03-17 2011-03-16 terapia para infecção fúngica com laser de baixa intensidade.
TW100108965A TW201201877A (en) 2010-03-17 2011-03-16 Fungal infection therapy with low level laser
AU2011227291A AU2011227291A1 (en) 2010-03-17 2011-03-16 Fungal infection therapy with low level laser
CA2792635A CA2792635A1 (en) 2010-03-17 2011-03-16 Fungal infection therapy with low level laser
JP2013500192A JP2013521948A (ja) 2010-03-17 2011-03-16 低レベルレーザーを用いた真菌感染症治療
MX2012010683A MX2012010683A (es) 2010-03-17 2011-03-16 Terapia para infecciones fungicas con laser de baja intensidad.
CN2011800244585A CN102883776A (zh) 2010-03-17 2011-03-16 利用低水平激光的真菌感染疗法
KR1020127026943A KR20130059331A (ko) 2010-03-17 2011-03-16 저 레벨 레이저를 지닌 진균 감염 테라피
PCT/US2011/028729 WO2011116134A2 (en) 2010-03-17 2011-03-16 Fungal infection therapy with low level laser
US13/344,257 US8814924B2 (en) 2001-03-02 2012-01-05 Fungal infection therapy device with low level laser
US13/400,205 US8409264B2 (en) 2001-03-02 2012-02-20 Fungal infection therapy method with low level laser
ZA2012/06571A ZA201206571B (en) 2010-03-17 2012-09-03 Fungal infection therapy with low level laser

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US27328201P 2001-03-02 2001-03-02
US09/932,907 US6746473B2 (en) 2001-03-02 2001-08-20 Therapeutic laser device
US10/772,738 US7118588B2 (en) 2001-03-02 2004-02-04 Scanning treatment laser
US10/976,581 US7922751B2 (en) 2004-02-04 2004-10-29 Stand-alone scanning laser device
US11/409,408 US7947067B2 (en) 2004-02-04 2006-04-20 Scanning treatment laser with sweep beam spot and universal carriage
US31495710P 2010-03-17 2010-03-17
US13/039,930 US20110213446A1 (en) 2001-03-02 2011-03-03 Fungal Infection Therapy with Low Level Laser

Related Parent Applications (1)

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US11/409,408 Continuation-In-Part US7947067B2 (en) 2001-03-02 2006-04-20 Scanning treatment laser with sweep beam spot and universal carriage

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US13/048,715 Continuation-In-Part US20110224759A1 (en) 2001-03-02 2011-03-15 Fungal Infection Therapy with Low Level Laser
US13/344,257 Continuation US8814924B2 (en) 2001-03-02 2012-01-05 Fungal infection therapy device with low level laser

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US20110213446A1 true US20110213446A1 (en) 2011-09-01

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US13/344,257 Active 2031-04-12 US8814924B2 (en) 2001-03-02 2012-01-05 Fungal infection therapy device with low level laser

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EP (1) EP2547399A4 (https=)
JP (1) JP2013521948A (https=)
KR (1) KR20130059331A (https=)
CN (1) CN102883776A (https=)
AU (1) AU2011227291A1 (https=)
BR (1) BR112012023373A2 (https=)
CA (1) CA2792635A1 (https=)
MX (1) MX2012010683A (https=)
RU (1) RU2012138118A (https=)
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US12042223B2 (en) 2011-02-24 2024-07-23 Eximo Medical Ltd. Hybrid catheter for vascular intervention
US9730756B2 (en) 2011-02-24 2017-08-15 Eximo Medical Ltd. Hybrid catheter for vascular intervention
US9763735B2 (en) 2011-02-24 2017-09-19 Eximo Medical Ltd. Hybrid catheter for endoluminal intervention
US11576724B2 (en) 2011-02-24 2023-02-14 Eximo Medical Ltd. Hybrid catheter for vascular intervention
US10258409B2 (en) 2011-02-24 2019-04-16 Eximo Medical Ltd. Hybrid catheter for endoluminal intervention
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CN108325090A (zh) * 2013-04-30 2018-07-27 麦迪科伦斯公司 手持式低水平激光仪和低水平激光束产生方法
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JP2013521948A (ja) 2013-06-13
WO2011116134A3 (en) 2012-04-05
US20120109265A1 (en) 2012-05-03
WO2011116134A2 (en) 2011-09-22
KR20130059331A (ko) 2013-06-05
US8814924B2 (en) 2014-08-26
BR112012023373A2 (pt) 2017-10-24
ZA201206571B (en) 2013-06-26
EP2547399A4 (en) 2013-09-25
EP2547399A2 (en) 2013-01-23
MX2012010683A (es) 2012-11-06
TW201138888A (en) 2011-11-16
CN102883776A (zh) 2013-01-16
AU2011227291A1 (en) 2012-09-27
RU2012138118A (ru) 2014-04-27

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