Handheld treatment apparatus with cartridge assembly locking features

An apparatus for treating human skin, comprising:

• an outer housing including a graspable portion, the outer housing comprising an applicator head engagement structure;
• an applicator head that connects to the outer housing;
• an image capture device that captures images of the human skin through an opening in the applicator head;
• a processor that analyzes the images of the human skin to identify skin deviations;
• and
• a cartridge comprising an array of nozzles comprising a nozzle plate defining discharge locations, located in the applicator head;
• the applicator head comprising an outer housing engagement structure that engages the applicator head engagement structure with the cartridge inserted into the outer housing to inhibit removal of the cartridge from the outer housing;
• a cap that engages the applicator head, wherein the cap has a locked configuration connected to the applicator head where the applicator head is removable from the outer housing and an unlocked configuration connected to the applicator head where removal of the applicator head from the outer housing is inhibited by the applicator head engagement structure;
• and
• an elongate deformable sealing element configured to deformably contact the nozzle plate and edges of the nozzles at the discharge locations, along a length of the nozzle plate, wherein the sealing element deforms when engaged with the edges of the nozzles, when the cap is engaged with the applicator head;
• said apparatus further comprising a sealing assembly that is used to seal the array of nozzles with the cap in the closed position and the locked configuration;
• wherein the sealing assembly comprises a support portion that supports the elongate deformable sealing element;
• wherein the support portion includes a frame that is pivotally connected to the applicator head;
• and
• wherein the sealing assembly further includes a switch engaging element that extends laterally outward of an upper edge of the frame and wherein the switch engaging element is sized to engage an activation switch located within the outer housing with the sealing assembly in a closed configuration;
• and wherein the activation switch provides a signal to the processor to activate or deactivate the apparatus based on whether the activation switch is actuated by the switch engaging element.