| abstract |
Laser lancet design for taking blood samples for clinical purposes, the structure of which comprises an active Er: YAG element, with an emission wavelength of 2.94 μm, with a pulse energy of up to 0.5 joules and with a pulse duration which varies between 0.2 and 0.9 milliseconds; said lancet has a positioning system formed by an infrared light-emitting diode with an intensity of 10 mW and a phototransistor sensor, which are situated on both sides of, and are perpendicular to, the main laser beam axis, the purpose of which is to activate the generation of the laser pulse (Er: YAG) when the area of incidence, or the patient's finger, matches the position of the focal distance of a lens which focuses the laser pulse. |