Abstract: A micro-needle device comprising an active substance layer (3) having a plurality of active substance chambers (4) formed therein, a drive substance layer (9) having a plurality of drive substance chambers (10) formed therein and a needle support layer (5) having a plurality of micro-needles (6) extending therefrom. An activation layer (12) comprising a plurality of heating elements (14) for heating an expandable drive substance (11) located in the drive substance chambers (10) for in turn urging the second membrane (16) into the active substance chamber (4) for pressurizing and urging an active substance (2) therefrom through the corresponding micro-needle (6). A plurality of membrane accommodating recesses (25) extend into the needle support layer (5) for accommodating the first membrane (15) as the active substance in the corresponding active substance chamber (10) is pressurized. A puncturing member (33) with a piercing point (35) extends into each membrane accommodating recess (25).

Abstract: A micro-needle delivery device (1) comprises an active substance accommodating layer (17) having active substance accommodating chambers (20) therein, a drive substance accommodating layer (32) having drive substance accommodating chambers (35) therein aligned with the active substance accommodating chambers (20), an activating layer (45) having heating elements (48) aligned with the drive substance accommodating chambers (35) for heating a drive substance therein, and a micro-needle element (8) having a needle support layer (9) and a plurality of micro-needles (12) extending therefrom. A burstable first membrane (22) is located between and sealably secured to the micro-needle element (8) and to the active substance accommodating layer (17) for sealably closing the active substance accommodating chambers (20) at one end.

Abstract: A delivery device for administering an active substance to a subject transdermally includes a first plate member having a plurality of first chambers formed therein. Solid form structures including the active substance and of conical shape having a pointed skin penetrating tip are located in the first chambers. A second plate member having a plurality of second chambers including a driving substance is secured to the first plate member with a first membrane of an expandable material sealably located between the respective first and second plate members. Expansion of the driving substance in the second chambers urges the first membrane into the corresponding first chambers for in turn urging the solid form structures to penetrate through a second membrane into the skin of the subject. A third plate member includes a plurality of electrically powered heating elements aligned with the second chambers for heating and expanding the driving substance.

Abstract: A micro-needle device (3) comprises a micro-needle element (2) which is carried on a strap (14) and is securable around a limb of a subject by the strap (14) with the micro-needle element (2) located at a desired site. A pressure sensor (23) is located between the strap (14) and the micro-needle element (2) for detecting the pressure at which the micro-needle element (2) is urged into engagement with the skin of the subject. An adjustable clasp (18) secures the strap (14) and permits adjustment of the tension in the strap (14) for in turn adjusting the pressure with which the micro-needle element (2) is urged into engagement with the skin of the subject.

Abstract: A micro-needle device comprising an active substance layer (3) having a plurality of active substance chambers (4) formed therein, a drive substance layer (9) having a plurality of drive substance chambers (10) formed therein and a needle support layer (5) having a plurality of micro-needles (6) extending therefrom. An activation layer (12) comprising a plurality of heating elements (14) for heating an expandable drive substance (11) located in the drive substance chambers (10) for in turn urging the second membrane (16) into the active substance chamber (4) for pressurising and urging an active substance (2) therefrom through the corresponding micro-needle (6). A plurality of membrane accommodating recesses (25) extend into the needle support layer (5) for accommodating the first membrane (15) as the active substance in the corresponding active substance chamber (10) is pressurised. A puncturing member (33) with a piercing point (35) extends into each membrane accommodating recess (25).

Abstract: A micro-needle delivery device (1) comprises an active substance accommodating layer (17) having active substance accommodating chambers (20) therein, a drive substance accommodating layer (32) having drive substance accommodating chambers (35) therein aligned with the active substance accommodating chambers (20), an activating layer (45) having heating elements (48) aligned with the drive substance accommodating chambers (35) for heating a drive substance therein, and a micro-needle element (8) having a needle support layer (9) and a plurality of micro-needles (12) extending therefrom. A burstable first membrane (22) is located between and sealably secured to the micro-needle element (8) and to the active substance accommodating layer (17) for sealably closing the active substance accommodating chambers (20) at one end.

Abstract: A delivery device (1) for administering an active substance to a subject transdermal? comprises a first plate member (7) having a plurality of first chambers (8) formed therein. Solid form structures (2) comprising the active substance and of conical shape having a pointed skin penetrating tip (5) are located in the first chambers (8). A second plate member (12) having a plurality of second chambers (16) comprising a driving substance (18) is secured to the first plate member (7) with a first membrane (20) of an expandable material sealably located between the respective first and second plate members (7,12). Expansion of the driving substance (18) in the second chambers (22) urges the first membrane (20) into the corresponding first chambers (8) for in turn urging the solid form structures (2) to penetrate through a second membrane (22) into the skin of the subject.