Atraumatic insertion of a subcutaneous device

The present invention embeds subcutaneous part insertion type devices, such as a sensor, to the selection part of a patient's body, for example, relates to the concept of acquiring the glucose value in blood. In the 1st mode, an insertion needle is equipped with a rectangular needle main part and tip part, a tip part has an almost smooth field which inclines toward the tip and tip which enable insertion of the needle to a subcutaneous part, and a needle main part is equipped with the long and slender slot in which at least one copy of subcutaneous part insertion type device can be accommodated along with the part. In the 2nd mode, the combination of an insertion needle and a subcutaneous part insertion type device forms a rectangular main part part and tip part, and the tip part is formed of either of these components, or the combination of these two components, and has an almost smooth field which inclines toward a tip and a tip. The concept which softens the pain it not only reduces the strength of the vital reaction after embedding a device at a subcutaneous part, but produced in relation to insertion by the above-mentioned composition is offered.