TRANSDERMAL DRUG DELIVERY APPARATUS AND METHODS Russian patent published in 2018 - IPC A61M37/00 

FIELD: medicine.

SUBSTANCE: group of inventions relates to medical equipment. Transdermal drug delivery apparatus is configured to contact a user's skin and supply fluid and comprises a housing for fastening to the user. Microneedle assembly is configured for being engaged against the skin and is movably mounted to the housing. First force exerting element exerts a first force for forcing the microneedle assembly outwardly from the housing and against the skin. Reservoir is carried by the housing for containing the fluid and is in fluid communication with the microneedle assembly. Second force exerting element exerts a second force for causing at least some of the fluid to flow from the reservoir to the microneedle assembly. Latching mechanism is adapted to be transitioned between a latched state for restricting expansion of the second force exerting element, and an unlatched state for allowing expansion of the second force exerting element. Microneedle assembly comprises a deformable element connected between the microneedle assembly and the housing for both allowing and restricting expansion of the first force exerting element independently of operation of the latching mechanism. Alternative version of the design of the device is provided.

EFFECT: ensuring long-term transdermal administration of a drug into the body.

15 cl, 24 dwg