Lancet device

A lancet device, comprising:

• a body, having a first end and a second end;
• a head cap, wherein a first end of the head cap is provided with a needle outlet hole, and a second end of the head cap is connected to the first end of the body;
• and wherein an annular wall in the head cap is provided around the needle outlet hole and extends from the needle outlet hole towards the second end;
• a tail cap, wherein a first end of the tail cap is connected to the second end of the body;
• a needle core assembly, at least a part of which is axially guided and located in the body, wherein the needle core assembly includes a needle seat, a blood taking needle is adapted to be provided to the needle seat, and a needle tip of the blood taking needle is adapted to extend out from the needle outlet hole;
• a trigger assembly, having a driving core acting on the needle seat, wherein the driving core is adapted to drive the needle seat to move toward the needle outlet hole based on a trigger operation;
• and
• a driving spring for providing a trigger elastic force for the driving core,
• wherein:
• the needle seat is provided with elastic arms at a first end thereof close to the needle outlet hole, the elastic arms are evenly distributed in a circumferential direction and are provided to be radially outward,
• during the movement of the needle seat and the blood taking needle toward the needle outlet hole, the elastic arms elastically abut against an inner wall of the head cap or the annular wall provided in the head cap so as to reduce jitter of the blood taking needle during the blood collection process.