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System and method for pain reduction during skin puncture and breakable tip therefor

  • US 9,168,340 B2
  • Filed: 10/05/2011
  • Issued: 10/27/2015
  • Est. Priority Date: 03/27/2009
  • Status: Active Grant
First Claim
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1. An instrument for minimizing pain during administration by injection of a liquid, such as, an anesthetic comprising a main body having a forward end, a rod mounted in said body freely for vibration and projecting out of said forward end of said body, a single use tip composed of a tip sleeve removably mounted on the forward end of said main body by a first type of motion and removable from said main body by initiating a second and different type of motion, and a tip member having a shape to vibrate a defined preselected injection site on a human or animal, said tip member being removably and rigidly mountable on the rod, said tip member and tip sleeve being held together by an elastic overmold but in a spaced apart juxtaposition that enables said tip member to vibrate freely relative to said tip sleeve, a vibration unit mounted in the main body and coupled to said rod to impart vibrations via said rod to said tip member, wherein one of said main body and said tip member includes a forwardly projecting element and the other of said main body and said tip member defines a configuration to coact with said projecting element such that the removable demounting of the single use tip will rupture the overmold and render the single use tip unfit for further use.

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