A disposable medical device (2363) for use with an applicator (2320) that radiates microwave energy, said disposable medical device (2363) comprising: a tissue chamber (2338) placed at a distal end of said disposable medical device (2363) , said tissue chamber (2338) including an elastic element (2375) placed at a distal end thereof, said elastic element (2375) providing sealing between the skin and said tissue chamber (2338), said elastic element being placed around of an outer edge of the tissue chamber (2338) in order to facilitate the obtaining of tissue； an applicator chamber (2346) at a proximal end of said disposable apparatus (2363)； a flexible film that forms a tissue biobarrera (2337), said tissue biobarrera (2337) separating said tissue chamber (2338) and said applicator chamber (2346), said tissue biobarrera (2337) being a dielectric material that is substantially transparent to microwave energy, being substantially impermeable to air and biological fluids； wherein the applicator chamber (2346) is in communication with the tissue chamber (2338) through vacuum passages (2333) and an applicator biobarrera (2332)； the applicator biobarrera (2332) being substantially permeable to air but substantially impermeable to biological fluids； a vacuum seal (2348) at a proximal end of said applicator chamber (2346), said vacuum seal (2348) being placed to seal said applicator chamber (2346) when an applicator (2320) is placed in said chamber of the applicator (2346)； The vacuum passages (2333) can be connected to a vacuum source.Un aparato médico desechable (2363) para usarse con un aplicador (2320) que irradia energía de microondas, comprendiendo dicho aparato médico desechable (2363): una cámara de tejido (2338) colocada en un extremo distal de dicho aparato médico desechable (2363), incluyendo dicha cámara de tejido (2338) un elemento elástico (2375) colocado en un extremo distal de esta, proporcionando dicho elemento elástico (2375) el sellado entre la piel y dic
