Disclosed are composite microneedles arrays including microneedles and a film overlaying the microneedles. The film includes a plurality of nano-sized structures fabricated thereon. Devices may be utilized for interacting with a component of the dermal connective tissue. A random or non-random pattern of structures may be fabricated such as a complex pattern including structures of differing sizes and/or shapes. Devices may be beneficially utilized for delivery of an agent to a cell or tissue. Devices may be utilized to directly or indirectly alter cell behavior through the interaction of a fabricated nanotopography with the plasma membrane of a cell and/or with an extracellular matrix component.

A device and method for delivering a high viscosity composition is described. The composition includes a bioactive agent for delivery to a subject in need thereof. The method delivers the bioactive agent at a high bioavailability and with little loss of agent to the natural defense mechanisms of the body. The device includes one or more microneedles with structures fabricated on a surface of the microneedles to form a nanotopography. A random or non-random pattern of structures may be fabricated such as a complex pattern including structures of differing sizes and/or shapes.

The invention relates to analyte monitoring/drug delivery device. The invention is suited for monitoring various blood constituents such as glucose. The device has a housing that at least partially encloses a plurality of microneedles disposed on a carrier and an electronics portion. Each microneedle is in fluid communication with a corresponding microchannel. Each microneedle is individually addressable. That is, each microneedle can be extended and retracted individually via an actuator. The invention can optionally provide for calibration without intervention of the user and can also provide for semi-continuous monitoring for day and night time. The invention can provide up to four, or more, weeks of operation. The invention can provide for a device that is relatively small in size, and therefore unobtrusive. The invention can also provide for device with remote control and interactive electronics. The invention may be also used for the delivery of various pharmaceutical agents.

The present disclosure describes microtips, MicroArrays, MicroArray Patches comprising MicroArrays, delivery devices, and methods of manufacturing and methods of using same. In some embodiments, a substance-loaded MicroArray is prepared by photochemically etching MicroArray outlines in a substrate sheet, the MicroArrays comprising a plurality of microtips, configuring reservoirs in each microtip such as by photochemical half etching, filling each reservoir with a substance to be delivered, and then bending each of the microtips out of planarity such that each microtip comprises a substance-loaded projection disposed an angle relative to the generally planar substrate sheet.

A fluid delivery device comprises a hydraulic pump chamber having a hydraulic fluid. A fluid reservoir is coupled to the hydraulic pump chamber and is configured to contain a fluid deliverable to a patient. A first actuator is coupled to the hydraulic pump chamber and is configured to pressurize the hydraulic pump chamber and configured to transfer energy through the hydraulic pump chamber to the fluid reservoir. A second actuator is coupled to the hydraulic pump chamber and is configured to pressurize the hydraulic pump chamber and configured to transfer energy through the hydraulic pump chamber to the fluid reservoir.

The configuration of an elongate aperture in a membrane draped over a microneedle assembly may be controlled by controlling the manner in which the aperture is formed and/or by controlling the manner in which the membrane is draped. At least a portion of the membrane may be spaced apart from a microneedle so that a gap is defined between the membrane and the microneedle. The gap may be configured for at least partially controlling the formation of the elongate aperture. The shape of the gap may optionally be at least partially defined by a pleat in the membrane. Any pleats may be aligned in a predetermined manner. The elongate aperture may be formed by a piercing member that is passed through a hole in the microneedle assembly prior to piercing the membrane. The piercing member may be a laser beam.

A dual chambered syringe includes: an inner barrel defining a first inner chamber, the inner barrel having an apertured stopper at its distal end, the inner barrel being open at its proximal end; a shaft adapted to fit within the inner barrel, the shaft having a distal end which is engageable with the aperture of the stopper; a device for controlling engaging and disengaging of the distal end of the shaft with the aperture of the stopper; an outer barrel concentric with the inner barrel defining a second inner chamber, the outer barrel having a distal end for receiving and dispensing fluids and a proximal end into which the distal end of the inner barrel is insertable into the second inner chamber; the apertured stopper engages the second inner chamber of the outer barrel and selectively prevents or permits the passage of fluids between the outer barrel second chamber and the inner barrel first chamber; the inner barrel having an engageable surface on its outside surface; and, the outer barrel having operatively associated therewith an engaging device for selective engagement and disengagement with the engageable surface on the inner barrel.

A device and method for delivering a high viscosity composition is described. The composition includes a bioactive agent for delivery to a subject in need thereof. The method delivers the bioactive agent at a high bioavailability and with little loss of agent to the natural defense mechanisms of the body. The device includes one or more microneedles with structures fabricated on a surface of the microneedles to form a nanotopography. A random or non-random pattern of structures may be fabricated such as a complex pattern including structures of differing sizes and/or shapes.

Disclosed are injection molded devices including microneedles on a substrate base. The microneedles may include a plurality of nano-sized structures fabricated thereon. The molds used to form the microneedles are assembled from a plurality of mold segments, each defining portions of the microneedles. Upon assembly of the multiple mold segments, microneedle negative cavities are formed. The molds may be used in an injection molding process to form microneedle arrays. Devices may be utilized for interacting with a component of the dermal connective tissue.

According to one embodiment, a method for manufacturing a hollow needlelike object including a hollow part inside includes: a step of preparing a first needlelike-object base having a face comprising a groove forming at least a part of the hollow part; and a step of covering the face of the needlelike-object base with a covering member.