Patent ID: 8157749

Claim:
A blood component measurement device comprising: a tip for blood measurement comprising a puncture needle possessing an axis and linearly movable for being advanced and retreated in an axial direction of the needle; a contact section which has a cavity permitting said puncture needle to pass therethrough and which comes into contact with a skin, the contact section displaceable in a direction that is neither parallel nor perpendicular to the axis of said puncture needle; a measurement unit for measuring a component of blood sampled; and a blood introduction section spaced from said puncture needle in a direction substantially orthogonal to the axis of said puncture needle and communicating with said measurement unit, the blood introduction section being at a position out of contact with the skin when the puncture needle punctures the skin, and after the skin is punctured by said puncture needle by linear advancement of the puncture needle in the axial direction, said blood introduction section is configured to be displaced from the position out of contact with the skin, in the axial direction of said puncture needle toward the skin and also in a direction substantially orthogonal to the axis of said puncture needle.