US20130123763A1 - Control method and structure of laser beam irradiation by using a contact sensor - Google Patents

Control method and structure of laser beam irradiation by using a contact sensor Download PDF

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Publication number
US20130123763A1
US20130123763A1 US13/608,029 US201213608029A US2013123763A1 US 20130123763 A1 US20130123763 A1 US 20130123763A1 US 201213608029 A US201213608029 A US 201213608029A US 2013123763 A1 US2013123763 A1 US 2013123763A1
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Prior art keywords
human body
laser beam
laser
measured
hum noise
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Abandoned
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US13/608,029
Inventor
Hak Ki Choi
Tae Ho HA
Hae Lyung Hwang
Sung Huan Gong
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Lutronic Corp
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Lutronic Corp
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Priority to US13/608,029 priority Critical patent/US20130123763A1/en
Assigned to MAX ENGINEERING CO., LTD. reassignment MAX ENGINEERING CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHOI, HAK KI, GONG, SUNG HUAN, HA, TAE HO, HWANG, HAE LYUNG
Assigned to LUTRONIC CORPORATION reassignment LUTRONIC CORPORATION CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: MAX ENGINEERING CORPORATION
Publication of US20130123763A1 publication Critical patent/US20130123763A1/en
Abandoned legal-status Critical Current

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/18Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
    • A61B18/20Surgical 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/18Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
    • A61B18/20Surgical 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
    • A61B18/203Surgical 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
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01HSTREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H1/00Removing undesirable matter from roads or like surfaces, with or without moistening of the surface
    • E01H1/08Pneumatically dislodging or taking-up undesirable matter or small objects; Drying by heat only or by streams of gas; Cleaning by projecting abrasive particles
    • E01H1/0827Dislodging by suction; Mechanical dislodging-cleaning apparatus with independent or dependent exhaust, e.g. dislodging-sweeping machines with independent suction nozzles ; Mechanical loosening devices working under vacuum
    • E01H1/0836Apparatus dislodging all of the dirt by suction ; Suction nozzles
    • E01H1/0845Apparatus dislodging all of the dirt by suction ; Suction nozzles with mechanical loosening or feeding instruments for the dirt to be sucked- up, e.g. brushes, scrapers
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00017Electrical control of surgical instruments
    • A61B2017/00022Sensing or detecting at the treatment site
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00315Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
    • A61B2018/00452Skin
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/06Measuring instruments not otherwise provided for
    • A61B2090/064Measuring instruments not otherwise provided for for measuring force, pressure or mechanical tension
    • A61B2090/065Measuring instruments not otherwise provided for for measuring force, pressure or mechanical tension for measuring contact or contact pressure

Definitions

  • the present invention relates to a laser beam control structure and method, and more particularly, to a laser beam control structure and method, wherein various types of hum noise generated from a human body are measured without applying an electric current to the human body, and a laser beam is irradiated according to the measured hum noise.
  • micro laser beam is irradiated in various patterns on a certain area of the skin.
  • a handpiece tip should be in contact with the skin so that the size of the laser beam can be maintained accurately.
  • Various contact sensors have been used to determine whether the handpiece tip is in contact with the skin.
  • a conventional laser beam handpiece comprises a laser fiber 12 made of sapphire to irradiate laser beams, which are output from a laser beam output device (not shown), in a handpiece body 10 ; a collimating lens 14 for converting the laser beams irradiated from the laser fiber 12 into collimated light; a reflector 16 for changing a beam path of the laser beams output through the collimated lens 14 ; and a focusing lens 18 for focusing the laser beams reflected by the reflector so that the laser beams can be irradiated on a position.
  • One of contact sensors to be employed at this time is an electrically operated contact sensor in which at least two electrodes 19 electrically insulated to each other are mounted at certain portions on a handpiece tip (not shown) and a predetermined voltage is applied between the electrodes.
  • a certain electric current flows through the skin. The electric current is measured to check a state where the electrodes are in contact with the skin. Only when the handpiece tip is in contact with the skin, a laser can be oscillated and micro laser beams can be irradiated on the skin.
  • An object of the present invention is to provide a laser beam control structure and method, wherein various types of hum noise generated from a human body are measured without applying an electric current to the human body, and a laser beam is irradiated according to the measured hum noise.
  • a laser beam control structure of the present invention comprises a handpiece for irradiating laser beams output from a laser beam output device, on a predetermined part; at least one electrode unit positioned at a human body contact portion of the handpiece and receiving hum noise generated from a human body; and a control unit electrically connected to the electrode unit so as to measure the hum noise applied from the electrode unit and to cause the laser beams to be irradiated according to the measured hum noise.
  • the control unit may comprise an amplification unit for amplifying the measured hum noise; and a modulation unit for converting the hum noise applied from the amplification unit into a digital signal.
  • a laser beam control method of the present invention comprises the steps of: 1) measuring hum noise generated from a human body; 2) checking a contact state between the electrode unit and a human body; and 3) checking, based on the measured hum noise, whether laser beams will be irradiated and irradiating the laser beams.
  • Step 1) further comprises the steps of amplifying the measured hum noise; and converting the amplified hum noise into a digital signal.
  • the present invention constructed as above has the following advantages.
  • hum noise generated from a human body are measured without applying an electric current to the human body, and a laser beam is irradiated according to the measured hum noise.
  • a handpiece can be in perpendicular contact with a human body to ensure more effective irradiation of laser beams.
  • FIG. 1 is a sectional view showing the structure of a conventional handpiece.
  • FIG. 2 is a schematic view showing a laser beam control structure according to the present invention.
  • FIG. 3 is a schematic view showing the configuration of an electrode unit of the laser beam control structure according to the present invention.
  • FIG. 4 is a block diagram illustrating a laser beam control method according to the present invention.
  • the laser beam control structure comprises a handpiece 100 for irradiating laser beams output from a laser beam output device, on a predetermined part; at least one electrode unit 110 positioned at a human body contact portion of the handpiece 100 and receiving hum noise generated from a human body; and a control unit 120 electrically connected to the electrode unit 110 so as to measure the hum noise applied from the electrode unit 110 and to cause the laser beams to be irradiated according to the measured hum noise.
  • the electrode unit 110 comprises four electrodes 111 , 112 , 113 and 114 arranged at a predetermined interval.
  • the respective electrodes are constructed to come into contact with the human body and to receive the hum noise generated from the human body. Further, when all the four electrodes 111 , 112 , 113 and 114 are in contact with the human body, the handpiece 100 irradiates the laser beams, resulting in efficient skin treatment.
  • the control unit 120 comprises an amplification unit 122 for amplifying the measured hum noise; and a modulation unit 124 for converting the hum noise applied from the amplification unit 122 into a digital signal, and functions to apply a signal for causing the handpiece 100 to irradiate the laser beams in response to an electrode contact signal from the electrode unit 110 .
  • any control circuit may be used for the control unit 120 so far as the control circuit can amplify and digitalize the hum noise applied from the electrodes.
  • a laser beam control method comprises the steps of measuring hum noise generated from a human body (S 10 ); checking a contact state between the electrode unit and a human body (S 40 ); and checking, based on the measured hum noise, whether laser beams will be irradiated and irradiating the laser beams (S 50 ). It is preferred that between the measuring step S 10 and the human body contact state checking step S 40 , the laser beam control method further comprise the steps of amplifying the measured hum noise (S 20 ), and converting the amplified hum noise into a digital signal (S 30 ).
  • the electrode unit when the electrode unit comes into contact with the human body in the measuring step, specific hum noise is generated from the human body. Accordingly, the electrode unit receives the hum noise in the measuring step, thereby preventing the occurrence of an error due to application of an electric current to the human body, and ensuring fast and rapid measurement regardless of various conditions of the human body. Further, the applied hum noise is amplified and digitalized so that a user can easily recognize the hum noise.
  • control unit causes the laser beams to be irradiated, so that the human body can be treated in a state where the handpiece is always perpendicular to the human body, resulting in improved efficiency.

Abstract

The present invention relates to a laser beam control structure and method. A laser beam control structure of the present invention comprises a handpiece for irradiating laser beams output from a laser beam output device, on a predetermined part; at least one electrode unit positioned at a human body contact portion of the handpiece and receiving hum noise generated from a human body; and a control unit electrically connected to the electrode unit so as to measure the hum noise applied from the electrode unit and to case the laser beams to be irradiated according to the measured hum noise. According to the present invention, there are advantages in that various types of hum noise generated from a human body are measured without applying an electric current to the human body, and a laser beam is irradiated according to the measured hum noise.

Description

    TECHNICAL FIELD
  • The present invention relates to a laser beam control structure and method, and more particularly, to a laser beam control structure and method, wherein various types of hum noise generated from a human body are measured without applying an electric current to the human body, and a laser beam is irradiated according to the measured hum noise.
  • BACKGROUND ART
  • Generally, in micro fractional ablation that has been recently developed as a clinical method for dermatological treatment, a micro laser beam is irradiated in various patterns on a certain area of the skin. At this time, a handpiece tip should be in contact with the skin so that the size of the laser beam can be maintained accurately. Various contact sensors have been used to determine whether the handpiece tip is in contact with the skin.
  • Referring to FIG. 1, a conventional laser beam handpiece comprises a laser fiber 12 made of sapphire to irradiate laser beams, which are output from a laser beam output device (not shown), in a handpiece body 10; a collimating lens 14 for converting the laser beams irradiated from the laser fiber 12 into collimated light; a reflector 16 for changing a beam path of the laser beams output through the collimated lens 14; and a focusing lens 18 for focusing the laser beams reflected by the reflector so that the laser beams can be irradiated on a position. One of contact sensors to be employed at this time is an electrically operated contact sensor in which at least two electrodes 19 electrically insulated to each other are mounted at certain portions on a handpiece tip (not shown) and a predetermined voltage is applied between the electrodes. When the electrodes are in contact with the skin, a certain electric current flows through the skin. The electric current is measured to check a state where the electrodes are in contact with the skin. Only when the handpiece tip is in contact with the skin, a laser can be oscillated and micro laser beams can be irradiated on the skin.
  • However, in the method of measuring an electric current flowing through a human body, the amplitude of an electric current flowing when two electrodes are in contact with the skin varies according to persons and skin resistance depends on parts to be treated or skin conditions. As a result, there is a problem in that it takes much time to differently deal with respective conditions.
  • DISCLOSURE OF INVENTION Technical Problem
  • Accordingly, the present invention is conceived to solve the aforementioned problems. An object of the present invention is to provide a laser beam control structure and method, wherein various types of hum noise generated from a human body are measured without applying an electric current to the human body, and a laser beam is irradiated according to the measured hum noise.
  • Technical Solution
  • To achieve the object of the present invention, a laser beam control structure of the present invention comprises a handpiece for irradiating laser beams output from a laser beam output device, on a predetermined part; at least one electrode unit positioned at a human body contact portion of the handpiece and receiving hum noise generated from a human body; and a control unit electrically connected to the electrode unit so as to measure the hum noise applied from the electrode unit and to cause the laser beams to be irradiated according to the measured hum noise.
  • The control unit may comprise an amplification unit for amplifying the measured hum noise; and a modulation unit for converting the hum noise applied from the amplification unit into a digital signal.
  • A laser beam control method of the present invention comprises the steps of: 1) measuring hum noise generated from a human body; 2) checking a contact state between the electrode unit and a human body; and 3) checking, based on the measured hum noise, whether laser beams will be irradiated and irradiating the laser beams. Step 1) further comprises the steps of amplifying the measured hum noise; and converting the amplified hum noise into a digital signal.
  • Advantageous Effects
  • The present invention constructed as above has the following advantages.
  • According to the present invention, there are advantages in that various types of hum noise generated from a human body are measured without applying an electric current to the human body, and a laser beam is irradiated according to the measured hum noise.
  • Further, there is an advantage in that a handpiece can be in perpendicular contact with a human body to ensure more effective irradiation of laser beams.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a sectional view showing the structure of a conventional handpiece.
  • FIG. 2 is a schematic view showing a laser beam control structure according to the present invention.
  • FIG. 3 is a schematic view showing the configuration of an electrode unit of the laser beam control structure according to the present invention.
  • FIG. 4 is a block diagram illustrating a laser beam control method according to the present invention.
  • BEST MODE FOR CARRYING OUT THE INVENTION
  • Hereinafter, a laser beam control structure of the present invention will be described in detail with reference to the accompanying drawings.
  • Referring to FIG. 2, the laser beam control structure comprises a handpiece 100 for irradiating laser beams output from a laser beam output device, on a predetermined part; at least one electrode unit 110 positioned at a human body contact portion of the handpiece 100 and receiving hum noise generated from a human body; and a control unit 120 electrically connected to the electrode unit 110 so as to measure the hum noise applied from the electrode unit 110 and to cause the laser beams to be irradiated according to the measured hum noise.
  • As shown in FIG. 3, the electrode unit 110 comprises four electrodes 111, 112, 113 and 114 arranged at a predetermined interval. The respective electrodes are constructed to come into contact with the human body and to receive the hum noise generated from the human body. Further, when all the four electrodes 111, 112, 113 and 114 are in contact with the human body, the handpiece 100 irradiates the laser beams, resulting in efficient skin treatment.
  • The control unit 120 comprises an amplification unit 122 for amplifying the measured hum noise; and a modulation unit 124 for converting the hum noise applied from the amplification unit 122 into a digital signal, and functions to apply a signal for causing the handpiece 100 to irradiate the laser beams in response to an electrode contact signal from the electrode unit 110. Here, any control circuit may be used for the control unit 120 so far as the control circuit can amplify and digitalize the hum noise applied from the electrodes.
  • Referring to FIG. 4, a laser beam control method comprises the steps of measuring hum noise generated from a human body (S10); checking a contact state between the electrode unit and a human body (S40); and checking, based on the measured hum noise, whether laser beams will be irradiated and irradiating the laser beams (S50). It is preferred that between the measuring step S10 and the human body contact state checking step S40, the laser beam control method further comprise the steps of amplifying the measured hum noise (S20), and converting the amplified hum noise into a digital signal (S30).
  • That is, when the electrode unit comes into contact with the human body in the measuring step, specific hum noise is generated from the human body. Accordingly, the electrode unit receives the hum noise in the measuring step, thereby preventing the occurrence of an error due to application of an electric current to the human body, and ensuring fast and rapid measurement regardless of various conditions of the human body. Further, the applied hum noise is amplified and digitalized so that a user can easily recognize the hum noise.
  • Further, when the electrode unit completely comes into contact with the human body, the control unit causes the laser beams to be irradiated, so that the human body can be treated in a state where the handpiece is always perpendicular to the human body, resulting in improved efficiency.
  • The present invention is not limited to the embodiments described above, and those skilled in the art can make various modifications and changes thereto. The modifications and changes fall within the spirit and scope of the present invention defined by the appended claims.

Claims (5)

1.-4. (canceled)
5. A method for controlling a laser irradiating device, comprising:
measuring electronic noise generated from a human body using at least one electrode unit positioned at a human body contact portion of a handpiece;
amplifying the measured electronic noise and converting the amplified electronic noise into a digital signal; and
controlling the handpiece to irradiate a laser beam according to the electronic noise.
6. The method for controlling a laser irradiating device as claimed in claim 1 further comprising:
checking a contact state between the at least one electrode unit and the human body; and
determining whether laser beam will be irradiated or not, based on the measured electronic noise.
7. A laser irradiating device, comprising:
an irradiating portion for irradiating laser beams generated from a laser beam output device;
a detecting portion comprising at least one electrode unit and detecting electronic signals from human body during contacting the human body;
a control portion electrically connected to the detecting portion so as to measure the electronic signal detected from the detecting portion and controlling the irradiating portion to irradiate the laser beams based on the measured electronic signal.
8. The laser irradiating device as claimed in claim 7, wherein the control portion comprises an amplification unit for amplifying the measured electronic signals; and a modulation unit for converting the electronic signals applied from the amplification unit into digital signals.
US13/608,029 2006-03-27 2012-09-10 Control method and structure of laser beam irradiation by using a contact sensor Abandoned US20130123763A1 (en)

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PCT/KR2006/001579 WO2007111397A1 (en) 2006-03-27 2006-04-26 Control method and structure of laser beam irradiation by using a contact sensor
US29438709A 2009-10-05 2009-10-05
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