Puncture system, puncture assisting tool, body surface-irradiating laser mechanism, and puncture navigation system

A puncture assisting tool attachable to and detachable from a puncture needle that punctures using a line formed at a body surface of a patient by a vertical plane including an insertion point and a target point in a body of the patient, the puncture assisting tool comprising:

• a holding portion including a fixed portion that holds the puncture needle, a movable portion, and a fixing mechanism that holds and fixes the puncture needle with the fixed portion and the movable portion;
• a sensor unit configured to measure an angle of the held puncture needle from a vertical axis or a horizontal plane;
• and
• a presentation unit configured to present the angle, wherein
• the fixed portion has a perpendicular surface with respect to the puncture needle when the puncture needle is fixed, and a scale is marked on the perpendicular surface.

A body surface-irradiating laser mechanism comprising:

• a holding member;
• a laser irradiation unit attached via the holding member and configured to emit laser along a line formed at a body surface of a patient by a vertical plane including an insertion point and a target point in a body of the patient toward the vertical plane;
• and
• a movement mechanism configured to move the laser irradiation unit provided at the holding member.