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Therapeutic LASER
Therapeutic lasers, also known as low-level lasers or cold lasers, produce low-intensity light that can relieve pain and promote tissue healing. The document outlines the history and development of lasers from Einstein's work in the 1950s to current medical applications. It describes how therapeutic lasers work by stimulating cellular activity through photochemical and biostimulation effects to reduce pain and inflammation and speed tissue repair. Examples are given of conditions treated with laser therapy, such as osteoarthritis, wounds, and sports injuries. Contraindications and proper dosages are also discussed.
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Therapeutic LASER
- 1. Therapeutic LASER Dr. Subhash Khatri BPhT,MPT, PhD, FIAP
- 2. Overview • Laser isan 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.
- 3. HISTORY Einstein 1953 Maser Optical Laser 1955Dr.Theodre Maiman 1960 Bennet, Javan & Herriott
- 4. HISTORY • • • • • • • 1962 White &Ridgen 1964 Flock & Zueng Applications in different fields Communication, Industry Music, Typing Military, Medical Dermatology, dentistry, OBG, optahalm, diagnosis, Physiotherapy
- 6. • Visible • Notvisible
- 7. Electrical stimulating currents Commercial radio& TV Short wave diathermy LASER { Microwave diathermy Infrared rays Visible light Uoltraviolet Ionizing radiation
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- 14. CLASSIFICATION 1. Hot laser • • • • HIL SurgicalLaser Causes tissue heating Power > 60mW 2. Cold laser • • • • LIL Therapeutic Laser No Tissue heating Power < 60mW
- 15. GEM • Paper correctionby Prof. Sardaji
- 16. 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
- 20. Types Gas lasers Helium, neon, argon, carbon dioxide Chemical lasers Hydrogen fluoride, Solid laser Ruby laser Diode Laser: like solid but works on electron
- 21. 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.
- 23. PRODUCTION • • • • 1.Principle of production 2.FunctionalParts 3.Working 4.Parameters
- 24. Functional parts 1.Lasing medium 2.EnergySource 3.Mechanical Structure
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- 29. Parameters 1.Security switch 2.Timer 3.Mode 4.Sensor 5.Fiber opticcable 6.Probe 7.Probe switch
- 31. EFFECTS OF LASER 1.Pain relief 2. Tissue healing
- 32. PAIN RELIEF • • • • • • G.C.T. Serotonin Endorphinsecretion Acute & Chronic pain Pain site, trigger points, Acupuncture points
- 33. GEM • IF ASTUPID FOLLOWS LOGIC • THEN LOGIC BECOMES STUPID
- 34. Tissue healing • Phagocytosis,Collagen Synthesis, Contracure • CUMMING’S EXPERIMENT • BIOSTIMULATION THEORY (Biochemical, Physiological,Proliferative → Proliferation offibroblasts,reepithelisation & remodelling) • PHOTOCHEMICAL THEORY • Chromophores → Biostimulation
- 37. BEFORE & AFTERLASER
- 38. BEFORE & AFTERLASER
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- 40. INDICATIONS 6.Tennis Elbow 7.Bicipital tendinitis 8.TriggerFinger 9.Chronic ulcers 10.Wounds 11.Tenosynovitis 12.Carpal Tunnel Syndrome 13.Periarthritis 14.Sports injuries
- 41. Contraindications 1. 2. 3. 4. 5. 6. Pregnancy Neoplasms Exposure to Eye Hemorrhagicarea Infected wounds Thrombosis
- 43. DOSAGES • 2 TO30 Seconds • Energy density = Power (W) Time (sec) • Treatment Area ( cm²) • 3 to 10 weeks • Acute :Continuous • Chronic: Pulsed (10- 20pps)
- 44.
Editor's Notes
- #4 EINSTEIN GAVE AN ACCOUNT OF STIMULATED EMISSION OF RADIATION. Laser was also called as optical laserIN 1953 MASER WAS INVETED. 1955 Dr.Theodre Maiman devised a working model for production of Laser from Ruby crystal. In 1960 Bennet, Javan & Herriott discovered He-Ne laser.
- #5 In 1962 White & Ridgen produced visible red Laser with wavelength 632.8nm. In 1964 Flock & Zueng for the first time used Laser for surgery. There after the interest in Laser increased and possible applications in different fields were determined
- #6 Gordon Gould, he used acronym for the first time in his PhD thesis in 1959
- #7 Military application , laser EMW can be in the range of gamma, x ray,uv, visible, infra,micro, radio waves and henc can be called x ray laser, gamma laser etc
- #8 This is electromagnetic spectrum, to your left is wavelength and to your right is frequency
- #10 Warning symbol for lasers
- #11 SARDARJI SUFFERS FROM SERIOUS FINANCIAL CRISES, HE HAD TWO OPTIONS EITHER TO LOOT BANK OR TO KIDNAP. HE OPTS FOR SECOND. HE KIDNAPS ONE CHILD, TAKE THE CHILD TO REMOTE PLACE AND WROTE ON A PAPER A MATTER FOR CHILD FATHER THAT HE SHOULD PAY A RNASOM OF 20 LACKS AT A PLACE MENTIONED BY HIMOTHERWISE HE WILL KILL HIS CHILD, SIGNS IT AS ONE SARDARJI TUCK IT ON BACK OF CHILD AND SENDS HIM TO HIS FATHER.AT SPECIFIED LOCATION THEN HE FINDS CHILD WITH 20 LACKS IN HIS HAND MEANT FOR HIM WITH A NOTE, IN WHICH IT WAS WRITTEN THAT DON’T A FEEL ASHAMED OF YOURSELF WHILE CHEATINNG OTHER SARDAR WITH A SIGN SECOND SARDARJI
- #13 Star fire by NASA
- #16 One student attaches a 100 rupee note to ans book & write Rs 1 rupee per mark. Prof Sardarji corrects the paper, takes out Rs 100, attaches 80 7 writes you scored 20, keep the change of 80
- #28 He Neon machine