Physics of shock waves
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Shock waves are mechanical waves that require an elastic medium like water, air, or tissue to propagate. There are two main types of shock waves: focused shock waves, which have a steep pressure rise and higher energy density; and radial shock waves, which have a lower energy density. Focused shock waves can be generated using electromagnetic or piezoelectric technologies and have penetration depths between 15-50 mm, while radial shock waves use pulse transmitters and can penetrate deeper into tissues.
Physics of shock waves
- 1. Physics of shock waves
- 2. What are shock waves?
- 3. Shock Waves are mechanical waves are sound waves require an elastic medium for propagation like Water Air Tissue feature a steep pressure rise in nano second range (focused shock waves) What are shock waves?
- 4. F-SW – Focused shock wave Higher energy density R-SW – Radial shock wave Lower energy density Focused and radial shock waves Two technologies – two ways of generation
- 5. F-SW – Focused Shock Wave Frequency 1 – 8 Hz Energy 0.01 – 0.55 mJ/mm² Energy (C-ACTOR®) 0.01 – 1.24 mJ/mm² Penetration depth 15 mm – 50 mm Focused Shock Wave Technology (electromagnetic cylinder coil)
- 6. + Focused Shock Wave Technology ESWT – Extracorporeal shock wave therapy
- 7. 1980 Electrohydraulic ellipsoid 1985 Piezoelectric sphere 1986 Electromagnetic flat coil/lens 1989 Electromagnetic cylinder coil/paraboloid Focused Shock Wave Technology How can focused shock waves be generated ?
- 8. Focused Shock Wave Technology 1988: STORZ MEDICAL core technology Unique, patented shock wave source Cylindrical coil with rotational paraboloid reflector In-line localization possibility with X-ray or ultrasound
- 9. Radial Shock Wave Technology R-SW – Radial Shock Wave Frequency 1 – 21 Hz Energy 1 – 5 bar Pulse transmitter multiple
- 10. How can radial shock waves be generated? Animated radial shock wave application (shoulder pain)
- 11. Animated radial shock wave propagation in body tissue
- 12. Comparison of penetration depth – focused and radial shock wave Skinsurface Focused shock wave without stand-off 30mm 40mm 90mm 125mm Focused shock wave with stand-off II Radial shock wave with »Deep Impact« transmitter Radial shock wave with »Standard transmitter«