Inserting device and blood collection device

A blood collection device, comprising:

• a blood collection assembly;
• and
• an inserting device, comprising:
• a main casing with a position-limiting portion and a first holding portion;
• a bracket disposed in the main casing and comprising a second holding portion, wherein the blood collection assembly is detachably disposed on the bracket;
• a first elastic component disposed between the main casing and the bracket, wherein the first holding portion is adapted to resist an elastic force of the first elastic component to hold the bracket at a first position;
• an inserting assembly disposed in the main casing;
• and
• a second elastic component disposed between the inserting assembly and the bracket, wherein when the bracket is at the first position, the position-limiting portion limits the second holding portion, so that the second holding portion resists an elastic force of the second elastic component to hold the inserting assembly on the bracket,
• when the bracket is released by the first holding portion, the bracket, the second elastic component, the inserting assembly, and the blood collection assembly are moved from the first position to a second position by the elastic force of the first elastic component, so that the blood collection assembly is attached to a blood collection target,
• when the bracket is at the second position, the second holding portion is departed from the position-limiting portion, the inserting assembly is departed from the second holding portion by the elastic force of the second elastic component and is moved to the first position, and the bracket is adapted to be departed from the blood collection assembly on the blood collection target.