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Cleveland round tip (CRT) needle

  • US 20070106219A1
  • Filed: 10/31/2005
  • Published: 05/10/2007
  • Est. Priority Date: 10/31/2005
  • Status: Abandoned Application
First Claim
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1. A needle assembly for mitigating penetration injury during an injection into a desired area, the assembly comprising:

  • a cannula including an axially-disposed passageway and a cannula rim being disposed at a distal end thereof, the cannula rim defining a non-cutting edge; and

    a stylet being tapered to a stylet tip at a leading end thereof, the stylet being removably positionable within the passageway of the cannula with the stylet tip being longitudinally extendable beyond the cannula rim, the leading end and the cannula rim collectively forming a piercing head, wherein the piercing head facilitates penetration of the cannula into the desired area, retraction of the stylet tip from beyond the cannula rim subsequent to penetration into the desired area facilitating delivery of the medication through the passageway and exposing the non-cutting edge of the cannula rim to mitigate further penetration.

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