The new approach to the finger tissue puncturing procedure is in high demand in the market: it will enhance the procedure itself, make it easier (without the need of complex actions and usage of non-sterile scarifiers, etc.), reduce pain, and provide a higher level of sterility and protection against infections.
Capillary blood is usually taken by means of finger puncturing by disposable scarifiers (lancets)
Traditional metal needle-punching scarifiers used in medical institutions are characterized by painful puncture because of the lack of excellent spear surfaces polishing and the impossibility to control the puncture depth. Scarifiers do not provide complete sterility of the blood collection procedure. The risk of infection is primarily caused by the probability of direct contact of non-sterile surfaces (including medical personnel’s gloves) with a sterile scarifier’s surface coming into direct contact with the patient’s bloodstream. In practice, medical personnel often change gloves in case of any damages or only a few times per shift. Disposal of sharp used lancets also brings certain challenges and makes the production cost of this procedure rather expensive.
To reduce the risk of possible infection during blood collection from a finger many developed countries (USA, Europe) legally authorized to use in medical institutions only automatic lancets in the individual case with a retractable needle and a one-time release mechanism that guarantees the device single use (“safety lancet”). However, the high cost of such lancets limits their widespread application in Russia.
Compared with domestic punching scarifiers the average cost of lancets with retractable needle is higher to 20 times. Average public medical institution conducts up to 7000 blood collections from a finger per year, compared with the use of metal lancets the laser lancet provides savings of up to 50 000 rubles per year. In comparison, the savings for 10,000 medical institutions in this case will amount to 500 million rubles per year.
In addition, when using lancets due to inevitable vibrations the wound will be sword-cut in the case of punching scarifiers and lacerated when using the lancet with a retractable needle. This leads to painful puncture procedure and prolonged healing of the wound.
The non-contact puncture technology is based on ablation process (evaporation) of biological tissues exposed to a short laser radiation signal with a unique wavelength. The blood sample can be obtained and used for analysis in the microchannel formed.
Use of laser radiation when compared with metal needles reduce tissue damage and avoids the use of metal lancets the use of which creates the risk of infection.
Another feature of this technology is the low pain and rapid healing of microwounds after puncture.
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