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High pressure pre-burst for improved fluid delivery

  • US 10,548,659 B2
  • Filed: 09/08/2009
  • Issued: 02/04/2020
  • Est. Priority Date: 01/17/2006
  • Status: Active Grant
First Claim
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1. A device, comprising:

  • a hollow needle having a lumen and a plurality of injection ports comprising at least a first injection port, port A1, a second injection port, port A2, and a third injection port, port A3,wherein each of the plurality of injection ports increase in diameter from the proximal to the distal region of the needle, with said port A3 having an area greater than an area of said port A2 and the area of said port A2 being greater than an area of said port A1,wherein Σ

    A1

    Aneedle, and Aneedle is the cross-sectional area of the needle and Ai is the cross-sectional area of the plurality of injection ports,a plurality of individual channels within the lumen of the needle, the plurality of individual channels being oriented substantially parallel to a central longitudinal axis of the needle, wherein each of the plurality of injection ports is in fluid communication with one of the plurality of individual channels disposed within the lumen of the needle.

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