Patent ID: 8430889

Claim:
A puncture needle holder comprising a base frame, a link bar, a first seat part, a second seat part, and a positioning mechanism, wherein the link bar is pivotably connected to the base frame and has a pivot axis, the link bar has a support portion and a control portion, a guiding space for guiding the puncturing of a puncture needle is formed between the first seat part and the second seat part, the first seat part is slidably supported by the support portion and the second seat part includes a mounting end attached to the base frame, the base frame has a guiding body for constraining the first seat part and causing the first seat part to generate displacement in a direction perpendicular to the puncturing direction when the first seat part is moved, the guiding body cooperates with the first seat part, the positioning means is connected with the link bar and the base frame and locks the link bar relative to the base frame after the link bar moves into place, the link bar is able to be pivoted by manipulating the control portion, so that the link bar moves together with the first seat part to adjust the size of the guiding space, and the first seat part and the second seat part are able to keep parallel with each other during adjustment of the size of the guiding space.