2 results about "Lancet devices" patented technology

This disclosure relates to a blood collection needle, comprising: an outer sheath; at least two spring arms disposed at a first end of the outer sheath; a blood collection needle, wherein the outer wall of the needle core of the blood collection needle is provided with at least two stop protrusions, the at least two stop protrusions being adapted to abut against the ends of the at least two spring arms respectively in the axial direction; a pressing member, adapted to be pressedly assembled to the first end in the direction of the needle outlet, including a pressing cap and at least two extensions; a drive spring, one end abutting against the pressing member and the other end abutting against the stop protrusions of the blood collection needle, wherein: the extensions are adapted to abut against the corresponding ends of the at least two spring arms when the pressing member moves in the direction of the needle outlet, thereby driving the ends of the at least two spring arms to deform or move laterally outward, so that the stop protrusions simultaneously disengage from abutting against the ends of the at least two spring arms and allow the needle core to move in the direction of needle outlet.

Disclosed is a lancet device including: a body, having a first end and a second end; a head cap, wherein the first end of the head cap is provided with a needle outlet hole, and the second end of the head cap is connected to the first end of the body; a tail cap, wherein the first end of the tail cap is connected to the second end of the body, and the tail cap is provided with a first spring connecting portion, or the first spring connecting portion is provided in the tail cap; 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 and a blood taking needle, the blood taking needle is provided on the needle seat, and the 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 the driving core is provided with a second spring connecting portion; a driving spring, the both ends of which respectively abut against or are connected with first and second spring connecting portions, wherein the driving spring is located between the first and second spring connecting portions; and an elastic force adjustment unit for adjusting the axial distance between the first and second spring connecting portions to adjust the trigger elastic force of the driving spring.