LASER THERAPY
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THERAPEUTIC
LASER
Dr. Venkatesh
MPT(Neurology)
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OVERVIEW Laser is an Acronym for the Light
amplification by the Stimulated emission of Radiation.
Therapeutic laser is also known as Soft laser, Cold laser, Low intensity laser, class III A B, optic laser
Laser is a beam of light which is used for various purposes.
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HISTORY
Einstein 1953 Maser Optical Laser 1955 Dr.Theodre Maiman 1960 Bennet, Javan & Herriott
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Electrical stimulating currents
Commercial radio & TV Short wave diathermy
Microwave diathermy
Infrared rays Visible light
Uoltraviolet Ionizing radiation
LASER{
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RedRedRedRed
OrangeOrangeOrangeOrange
YellowYellowYellowYellow
GreenGreenGreenGreen
BlueBlueBlueBlue
VioletVioletVioletViolet
InfraredInfraredInfraredInfrared
UltravioletUltravioletUltravioletUltraviolet
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PROPERTIES
1. Monochromaticity2. Coherence3. Collimation
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CLASSIFICATION
1. Hot laser High intensity laser Surgical Laser Causes tissue heating Power > 60mW
2. Cold laser Low intensity laser Therapeutic Laser No Tissue heating Power < 60mW
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TYPES
1.Helium Neon Laser : 632.8nm 2.Ruby Laser: 694.3nm 3.Gallium Laser : 750nm 4.Aluminum Laser : 780nm 5.Arsenide : 810nm 6.Diodes Laser :820nm 7.Carbon Dioxide : 10000nm
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TYPES
Gas lasers Helium, neon, argon, carbon dioxide
Chemical lasers Hydrogen fluoride,
Solid laser Ruby laser
Diode Laser: like solid but works on electron
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CLASSIFICATION Class I/1: Safe, cd players. Class II/2: 1 mW: blink reflex of eye will
prevent damage. up to 1 mW power, for example laser pointers.
Class IIIa/3R: 5 mW and staring into such a beam for several seconds is likely to cause (minor) eye damage.
Class IIIb/3B: immediate severe eye damage upon exposure. Usually lasers up to 500 mW, cd and dvd burners.
Class IV/4:burn skin, eye and/or skin damage. industrial and scientific lasers are in this class.
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PRODUCTION
1.Principle of production 2.Functional Parts 3.Working 4.Parameters
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FUNCTIONAL PARTS
1.Lasing medium
2.Energy Source
3.Mechanical Structure
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PODUCTION
Energy
Lasing Medium LASER
Mechanical Structure
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PARAMETERS
1.Security switch2.Timer3.Mode4.Sensor5.Fiber optic cable6.Probe7.Probe switch
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EFFECTS OF LASER
1. Pain relief2. Tissue healing
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PAIN RELIEF
G.C.T. Serotonin Endorphin secretion Acute & Chronic pain Pain site, trigger points, Acupuncture points
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TISSUE HEALING Phagocytosis, Collagen Synthesis, Contracure CUMMING’S EXPERIMENT BIOSTIMULATION THEORY (Biochemical,
Physiological,Proliferative Proliferation offibroblasts,reepithelisation & remodelling)
PHOTOCHEMICAL THEORY Chromophores Biostimulation
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BEFORE & AFTER LASER
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BEFORE & AFTER LASER
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INDICATIONS
1.Incisions2.Osteoarthritis3.Rheumatoid arthritis4.Ankle sprain5.Chronic Low back pain
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INDICATIONS
6.Tennis Elbow7.Bicipital tendinitis8.Trigger Finger9.Chronic ulcers10.Wounds11.Tenosynovitis12.Carpal Tunnel Syndrome13.Periarthritis14.Sports injuries
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CONTRAINDICATIONS
1. Pregnancy2. Neoplasms3. Exposure to Eye4. Hemorrhagic area5. Infected wounds6. Thrombosis
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DOSAGES
2 TO 30 Seconds
Energy density = Power (W) Time (sec) Treatment Area ( cm²) 3 to 10 weeks Acute :Continuous Chronic: Pulsed (10- 20pps)