Sample collection and detection device and method

A sample collection and detection device, comprising:

• a collection cavity;
• a sample collector, comprising a collection rod and an absorption element, wherein the absorption element is provided with a hollow cavity, a part of the collection rod is accommodated in the hollow cavity of the absorption element, a first lug for blocking and locating the absorption element is arranged on the collection rod, an end part of one end of the collection rod connected with the absorption element is provided with engaging teeth, the engaging teeth protrude from a surface of the connecting rod, and the end part of one end of the collection rod connected with the absorption element is provided with a groove;
• a gasket, having a through hole, wherein the through hole passes through the collection rod to connect the gasket to the collection rod, and the absorption element is located between the gasket and the first lug;
• and
• an extrusion cylinder, fixedly connected in the collection cavity, wherein a cylinder opening of the extrusion cylinder is provided with a cylinder opening platform, a height of the extrusion cylinder is greater than or equal to a length of the absorption element, an inner diameter of the extrusion cylinder is greater than or equal to a diameter of the collection rod, and a diameter of the gasket is greater than the inner diameter of the extrusion cylinder,
• wherein the sample collector is inserted into the collection cavity, at first, the absorption element on the sample collector is located directly above the extrusion cylinder;
• secondly, the sample collector continues to move in a direction of insertion into the extrusion cylinder, the collection rod located in the hollow cavity of the absorption element enters the extrusion cylinder, the gasket at a bottom portion of the absorption element is blocked and extruded by the cylinder opening platform of the extrusion cylinder, the absorption element is compressed after being extruded by the cylinder opening platform and the gasket, and liquid flows onto the cylinder opening platform and a side wall of the extrusion cylinder after being extruded out from the absorption element and finally, the absorption element of the sample collector is entirely compressed, and all liquid in the absorption element flows into the collection cavity along the cylinder opening platform and the side wall of the extrusion cylinder.