摘要:
A microneedle intradermal drug delivery device with auto-disable functionality includes a syringe (12) having a plunger (14) displaceable along a barrel (16) and a microneedle adapter (20) with hollow microneedle(s) (22). The microneedle adapter (20) and the syringe (12) are configured for irreversible engagement such that, after attachment of the microneedle adapter (20) to the syringe (12), the microneedle adapter (20) is resistant to non-destructive manual removal from the syringe (12). Also provided are a self-locking plunger configuration (54, 56, 58) and a sliding safety shield (62).
摘要:
A system and method for delivering fluid into a flexible biological barrier employs a microneedle structure wherein a final position of microneedles inserted into the biological barrier is generally sideways projecting from the delivery configuration instead of the conventional downwards projecting arrangement. The microneedles project from a relief surface which is distinct from a primary biological-barrier contact region of the delivery configuration, and is typically angled upwards away from the biological barrier. During insertion, the contact region is brought into contact with the biological barrier and moved parallel to the surface of the flexible biological barrier so as to generate a boundary between a stretched portion and a non-stretched portion of the barrier. Typically concurrently with this motion, the microneedles penetrate into the flexible biological barrier such that, at the end of the motion, the microneedles extend into the flexible biological barrier from the boundary region in a direction towards the non-stretched portion. Fluid is then injected through the bores of the hollow microneedles towards non-stretched portion.
摘要:
A system and method for delivering fluid into a flexible biological barrier employs a microneedle structure wherein a final position of microneedles (12) inserted into the biological barrier (14) is generally sideways projecting from. the delivery configuration instead of the conventional downwards projecting arrangement. The microneedles (12) project from a relief surface (16) which is distinct from a primary biological-barrier contact region (18, 26) of the delivery configuration, and is typically angled upwards away from the biological barrier. During insertion, the contact region (18, 26) is brought into contact with the biological barrier (14) and moved parallel to the surface of the flexible biological barrier so as to generate a boundary (20) between a stretched portion (22) and a non-stretched portion (24) of the barrier. Typically concurrently with this motion, the microneedles (12) penetrate into the flexible biological barrier such that, at the end microneedles extend into the flexible biological barrier from the boundary region (20) in a direction towards the non-stretched portion (24). Fluid is then injected through the bores of the hollow microneedles towards non-stretched portion.
摘要:
A microneedle device for transporting fluid through a surface of a biological barrier, the device including a fluid transport configuration, an abutment member and a displacement device. The fluid transport configuration includes a substrate having a substantially planar surface having a plurality of microneedles projecting therefrom. The abutment member has an abutment surface for abutting the biological barrier. The displacement device is configured for generating a relative lateral sliding movement between the surface of the biological barrier and the fluid transport configuration in a sliding direction of the microneedles The microneedles are arranged so that a leading microneedle defines an effective area which is effective void of another microneedle. The effective area is defined as an area marked out by translating the base area of the leading microneedle, by the height of the leading microneedle, in a direction opposite to the sliding direction.
摘要:
The present invention relates to methods for intradermally delivering one or more biologically active agents such as vaccines and therapeutic agents into the dermis layer of the skin of a subject to obtain systemic delivery or an immune response using a microneedle drug delivery device containing the agent to be delivered. The methods employ a microneedle device with a row of hollow microneedles. The microneedles penetrate the skin of the subject and assume an anchored state in which the microneedles are anchored in the skin and project laterally from the device. A pivotal motion is then performed with the device so that the skin in which the microneedles are engaged is lifted above the initial plane of the surface of the skin while the biologically active agent is delivered. The methods of the invention elicit increased humoral and/or cellular response as compared to conventional vaccine delivery routes, facilitating dose sparing.
摘要:
Method and device for therapeutic or aesthetic treatment of the skin performs a combination of dermabrasion to mechanically modify at least an outer layer of the skin in a first region and phototherapy. The device preferably employs a skin interface element with projections protruding from a substrate which is moved in a vibratory motion by a vibration generating mechanism. This is combined with an illumination system deployed to direct a therapeutically relevant dosage of light towards a surface of the skin against which the skin interface unit is in contact.
摘要:
A device (10) and method for tranporting fluids across biological barriers enhances penetration of a biological barrier by the use of directional insertion, preferably with asymmetric microneedles (18) and/or microneedles (18) with sharp edges. Additionally, or alternatively, adhesion followed by alteration of contact geometry is employed to stretch the biological barrier across the microneedles (18), thereby also enhancing penetration. Also disclosed is a device (10) and method which combine shallow penetration by hollow microneedles (18) with jet injection via the microneedles (18) to achieve a total liquid penetration depth greater than the mechanical penetration depth of the microneedles (18).
摘要:
An injection system applicable to off-the-shelf syringes having a microneedle hub may reduce dead space and isolate the drug fluid from the microneedle chip to avoid compatibility issues. An insert may be disposed inside a male luer fitting and extend so that it is also disposed inside the female luer fitting using an insert. A septum may isolate the drug fluid from the microneedle chip in the hub prior to activation and the septum may, after activation, seal the triangular space in the hub to prevent leakage of fluid back to the syringe.
摘要:
An intradermal mini-needle interface has a penetration limiter providing a skin contact edge and a hollow hypodermic needle having a beveled penetrating portion protruding forward beyond the skin contact edge by no more than 3 mm. At least one skin contact surface defines a skin contact plane parallel to, or at a shallow angle to, the needle axis. The skin contact plane intersects the skin contact edge substantially at a base of the penetrating portion. Preferably, the penetration limiter is asymmetric under rotation about the needle axis.
摘要:
An adapter for achieving intradermal dosed delivery of a liquid by use of a dosed drug delivery device including a reservoir having a pierceable septum, the adapter having a connector including an attachment configuration for attachment to the dosed drug delivery device and a hollow needle deployed for piercing the septum. A liquid delivery interface, linked to the connector, includes a straight skin contact edge and one or more hollow microneedle adjacent thereto. The microneedle projects away from the skin contact edge. A flow path arrangement interconnects the needle and the at least one hollow microneedle.