Fixing device for clamping tissue

A fixing device for clamping a tissue, comprising:

• a support mechanism comprising a fixed connecting assembly and a drive assembly movable relative to the fixed connecting assembly;
• and
• a clamp mechanism comprising closure members and capture portions which are in one-to-one correspondence with the closure members;
• wherein each of the closure members comprises a closure connecting portion and a closure clamping portion in cooperation with respective one of the capture portions to clamp the tissue;
• and
• wherein the drive assembly comprises a drive connecting member, and the drive connecting member is hinged to the two closure connecting portions through two closure member matching portions respectively provided on opposite first mounting surfaces of the drive connecting member, such that the two closure connecting portions are pivotable relative to each other about the two closure member matching portions when the drive assembly moves relative to the fixed connecting assembly, so as to drive the two closure clamping portions to move towards or away from each other.