A portable, hand-held electrospinning or electrospraying apparatus and system, method, and portions thereof, comprised of a durable portion of the hand-held apparatus and a consumable portion of the hand-held apparatus. The consumable portion of the hand-held apparatus, which may contain the solution to be output in electrospin or electrospray fashion, may be replaced in whole or in part to provide additional or alternative solution. A base station may be provided, and can output high voltage and communication signals to the hand-held apparatus to enable the electrospin or electrospray operation by the hand-held apparatus.

A spray system for spraying a fluid, the spray system including a bladder for holding the fluid; and a sprayer including a fluid conductor, a fluid mover, at least one first nozzle and a second nozzle, the fluid conductor including an inner diameter, a first end configured to be connected to the bladder, a second end configured to be selectively connected to one of the at least one first nozzle and a second nozzle, wherein the second nozzle including a through opening at least about the same size as the inner diameter, wherein the fluid mover is configured to draw the fluid from the bladder through one of the at least one first nozzle to create a spray of the fluid and the second nozzle to return at least a portion of the fluid to a storage tank.

A film forming device 10 including a distance measurement unit 30 for measuring the distance between the skin S and the device 10, a distance decision unit 31 for deciding whether the distance measured by the distance measurement unit 30 is proper for electrostatic spraying, and a distance notification unit 32 for notifying a user of the decision by the distance decision unit 31. The film forming device 10 is of hand-held type small enough and configured to be held by the user's hand. The device 10 preferably includes an angle measurement unit 42 for measuring the angle between the electrostatic spray direction and the skin S.

A portable, hand-held electrospinning or electrospraying apparatus and system, method, and portions thereof, comprised of a durable portion of the hand-held apparatus and a consumable portion of the hand-held apparatus. The consumable portion of the hand-held apparatus, which may contain the solution to be output in electrospin or electrospray fashion, may be replaced in whole or in part to provide additional or alternative solution. A base station may be provided, and can output high voltage and communication signals to the hand-held apparatus to enable the electrospin or electrospray operation by the hand-held apparatus.

A fluid sprayer includes a pump and an electrostatic module configured to provide an electrostatic charge to spray fluid. The electrostatic module is electrically connected to a conductive component of the fluid sprayer, such as a fluid displacement member, fitting, cylinder, or spray tip, to charge the spray fluid via the conductive component. The fluid is electrostatically charged prior to exiting the fluid sprayer.

A portable, hand-held electrospinning or electrospraying apparatus and system, method, and portions thereof, comprised of a durable portion of the hand-held apparatus and a consumable portion of the hand-held apparatus. The consumable portion of the hand-held apparatus, which may contain the solution to be output in electrospin or electrospray fashion, may be replaced in whole or in part to provide additional or alternative solution. A base station may be provided, and can output high voltage and communication signals to the hand-held apparatus to enable the electrospin or electrospray operation by the hand-held apparatus.

A portable, hand-held electrospinning or electrospraying device and system, method, and portions thereof are described. Such device can be for electrospinning or electrospraying a predetermined solution toward a deposit surface. The device can have a durable portion, a semi-durable portion, and a consumable portion. The consumable portion can be received and held by the semi-durable portion, and the semi-durable portion holding the consumable portion can be removably coupled to the durable portion.

The invention relates to a method for controlling an electrostatic atomizer for liquids, the atomizer comprising a liquid tank and a delivery device for liquid from the liquid tank, a high-voltage source and also at least one atomizer nozzle for the atomization of liquid, the at least one atomizer nozzle being connected to the high-voltage source. Here, the voltage and/or the current intensity at at least one of the atomizer nozzles are detected by sensors of control electronics and/or the voltage and/or the current intensity at the high-voltage source are detected by sensors of the control electronics.

Provided is a method for forming a good fibrous coating on a target surface even in a high-humidity environment when electrostatically spraying is performed directly on the target surface such as skin.

A composition for forming a coating of fibers on a target object by electrostatic spraying, comprising the following components (a), (b), (c) and (d): (a) 1 mass % or more and 45 mass % or less of a polymer having a film-forming ability; (b) 45 mass % to 95 mass % of one or more volatile substances selected from the group consisting of an alcohol and a ketone; (c) a conductivity controlling agent to control the conductivity of the composition to 8 S/cm or more and 300 S/cm or less; and (d) 0.2 mass % or more and 25 mass % or less of water.

A method for applying a medical treatment solution to a treatment site of a patient, that includes removably attaching a syringe assembly so that the syringe assembly is in communication with a pathway that leads to at least one nozzle; charging the medical treatment solution of the syringe assembly; and expelling the charged medical treatment solution to the treatment site.