Fluid Skin Treatment Device

A device for performing microdermabrasion, comprising:

• (a) a cartridge comprising:
• (i) a treatment fluid compartment for retaining a treatment fluid, the compartment having a proximal end, a distal end, and a cylindrical inner wall, wherein the proximal end further comprises a plunger sealing the proximal end in liquid-tight engagement from a proximal portion of the compartment, and wherein the distal end comprises an outlet opening;
• (ii) a waste fluid storage compartment for receiving a waste fluid and having a proximal end, a distal end, and a fluid inlet, wherein the waste fluid storage compartment has a larger interior volume than the treatment fluid compartment;
• and
• (iii) a vacuum conduit within the waste fluid storage compartment having an inlet in communication with the interior of the waste fluid storage compartment and an outlet outside the waste fluid storage compartment, wherein the inlet of the vacuum conduit is positioned such that fluid in the waste fluid storage compartment will not reach the inlet when all the fluid from the treatment fluid compartment is contained in the waste fluid storage compartment;
• (b) a source of vacuum pressure in communication with the outlet of the vacuum conduit of the waste fluid storage compartment;
• (c) an applicator head having:
• (i) a fluid outlet having a distal end, the fluid outlet being in fluid communication with the outlet opening of the treatment fluid compartment;
• (ii) a fluid inlet having a distal end, the fluid inlet being in fluid communication with the fluid inlet of the waste fluid storage compartment;
• and
• (iii) a circumferential wall having a distal rim and surrounding the fluid outlet and the fluid inlet, wherein the rim extends outwardly beyond the fluid outlet and the fluid inlet,
• wherein when the rim of the circumferential wall contacts a user's skin, a seal can be formed around the rim to allow vacuum pressure from the source of vacuum pressure to pull the plunger of the treatment fluid compartment distally and withdraw treatment fluid from the treatment fluid compartment through the fluid outlet of the applicator head, following which fluid applied to the user's skin is withdrawn through the fluid inlet of the applicator head and into the waste fluid storage compartment.