Patent ID: 6332871
Filing Date: 2001-12-25
Classification: A61B

Abstract:
A device for obtaining a sample of body fluid through the skin comprising:a housing member suitable for use and adapted to contain a needle for piercing the skin;a spring member in the housing for urging the needle to protrude from the end of the housing sufficient to penetrate the skin;a plunger member for retracting the needle against the spring tension and a trigger member to engage the plunger to hold the needle retracted until released by the trigger;a stop member to limit the depth of needle penetration of the skin when released by the trigger;a sample container communicating with the needle for receiving the sample from the needle;a second spring for retracting the needle from the skin and a suction cam and plunger activated upon the retraction of the needle for drawing the sample of fluid which accumulates on the surface of the skin into the sample container; anda skin stimulation member constructed for contacting and stimulating the skin by at least one of mechanical action, piezoelectric action, ultrasonic action, electrical action, and thermal action.