&lt;title&gt;An Er:YAG blood sampling skin puncher&lt;/title&gt;

Săvăstru, D.; Ristici, Esofina; Mustata, Marina; Micloş, S.; Rusu, M. I.; Radu, Cristian; Savu, V.

doi:10.1117/12.756814

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2015

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“…[1][2][3] Compared with stainless steel lancets, laser skin perforators in°ict relatively low levels of pain, allowing e®ective blood sampling and rapid wound healing. 4 When the skin surface is irradiated using short pulses of high power density radiation, skin tissue is locally ablated [5][6][7] ; this forms a small hole, which bleeds if the hole is deep and injures a capillary.…”

Section: Introductionmentioning

confidence: 99%

Accurate laser skin perforation technique aimed at promoting bleeding and reducing pain

Chang

Lin

Huang

2015

J. Innov. Opt. Health Sci.

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Laser skin perforation is an e®ective and promising technique for use in blood collection. In this study, the relation between the perforation pro¯le of skin and laser irradiation at various energies is discussed. Increasing laser energy does not uniformly expand the size and depth of a hole because the shallow depth of¯eld (DOF) of the focused light primarily concentrates energy on the skin surface. In practice, the hole gradually transforms from a semielliptical shape to an upsidedown avocado shape as the laser energy increases. This phenomenon can increase the amount of bleeding and reduce pain. The¯ndings support the feasibility of developing an accurate laser skin perforation method.

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