Sample collection device, system and method for extracting and collecting a sample of a fluid of a user

A sample collection device for collecting a blood sample of a patient, the sample collection device at least comprising:

• a first partially deformable shell, the first shell being an exterior, surface shell, and
• a second at least partially pierceable shell, the second shell enclosed by the first shell,
• a sample container, and
• an automatic mechanical cutting mechanism comprising a rotatable cutting blade and an actuator torsion spring,
• wherein in a mounted state of the collection device a pre-packaged vacuum is sealed between the first shell and the second shell,
• wherein the second shell encloses in the mounted state the sample container and the automatic mechanical cutting mechanism comprising the rotatable cutting blade and the actuator torsion spring, the actuator torsion spring being actuatable by pressing the first shell, thereby releasing and rotating the cutting blade in order to create an incision, and
• wherein by pressing the first shell the pre-packaged vacuum is released to a collection opening of the second shell such that the vacuum effects a suction effect in order to cause blood coming out of the incision created by the rotatable cutting blade to leak into the sample container.