Biomedical patches with aligned fibers

An apparatus for producing a structure including a plurality of fibers, the apparatus comprising:

• a plurality of first electrodes at least partially circumscribing an area;
• a second electrode positioned within the area and electrically coupled to the first electrodes, the second electrode comprising a diameter of up to about 5 mm and terminating in a point;
• and
• a power supply electrically coupled to the first electrodes and the second electrode, the power supply configured to electrically charge the first electrodes and the second electrode at a first polarity;
• wherein when a spinneret at a fixed position with respect to the second electrode and approximately aligned with the second electrode and charged at a second polarity opposite the first polarity dispenses a polymer, the dispensed polymer forms a plurality of fibers extending from the second electrode to the first electrodes.

A system for producing a structure including radially aligned fibers, the system comprising:

• a first electrode defining an enclosed area;
• a second electrode positioned approximately at a center of the enclosed area, the second electrode comprising a diameter of up to about 5 mm and terminating in a point;
• and
• a spinneret at a fixed position with respect to the second electrode, the spinneret configured to dispense a polymer while the first electrode and the second electrode are charged at a first polarity and the spinneret is electrically charged at a second polarity opposite the first polarity;
• wherein the dispensed polymer forms a plurality of fibers extending from the second electrode to the first electrode.