Miniature safety blood lancet for minimizing pain

A miniature safety blood lancet for minimizing pain, comprising:

• a needle body,
• an activation sleeve,
• a housing, and
• a spring;
• wherein
• the activation sleeve is arranged in the housing;
• the needle body is arranged in the activation sleeve;
• the housing, the activation sleeve and the needle body are slidably connected;
• the housing is provided with an inverted buckle;
• the activation sleeve is provided with an inner wall;
• an inner side of a middle of the inner wall is provided with an unlocking arm, and an outer side of a bottom of the inner wall is provided with a buckle;
• a needle cap is arranged at a front end of the needle body;
• the needle cap is provided with a self-locking protrusion;
• the unlocking arm of the activation sleeve is snap-fitted with the self-locking protrusion of the needle cap and the inverted buckle of the housing, respectively, to fix a positional relationship between the needle body, the activation sleeve and the housing;
• the spring is arranged between a bottom of the needle body and the housing;
• a guide table is arranged at a bottom of the housing;
• the activation sleeve is provided with a bevel;
• a top of the guide table abuts an inner side of the bevel;
• and
• when the activation sleeve is pressed, the top of the guide table expands the inner wall towards both sides, and the needle body moves axially to pass through a clamping position of the inner wall under a force of the spring.