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Needle-to-needle electrospinning

  • US 8,795,577 B2
  • Filed: 01/23/2012
  • Issued: 08/05/2014
  • Est. Priority Date: 11/30/2007
  • Status: Active Grant
First Claim
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1. A method for preparing a medical device, the method comprising:

  • providing the medical device, the medical device comprising a first surface and an opposing second surface;

    providing an electrospinning apparatus, the electrospinning apparatus comprising a first spinneret and a second spinneret located substantially opposite the first spinneret, the first spinneret comprising a reservoir and an orifice fluidly coupled to the first spinneret reservoir, the second spinneret comprising a reservoir and an orifice fluidly coupled to the second spinneret reservoir;

    applying a first electrical charge to the first spinneret;

    applying a second electrical charge to the second spinneret, a sign of the second electrical charge being the same as a sign of the first electrical charge;

    applying a third electrical charge to the medical device, a sign of the third electrical charge being opposite of the sign of the first electrical charge and the sign of the second electrical charge;

    locating the first spinneret orifice nearby the medical device first surface;

    locating the second spinneret orifice nearby the medical device second surface;

    simultaneously electrospinning a first solution onto the medical device first surface with the first spinneret and a second solution onto the medical device second surface with the second spinneret.

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