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Apparatus and method for injecting a viscous material into the tissue of a patient

  • US 5,385,561 A
  • Filed: 01/18/1994
  • Issued: 01/31/1995
  • Est. Priority Date: 01/18/1994
  • Status: Expired due to Term
First Claim
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1. A method for injecting a viscous material into the tissues of a patient, comprising the steps of:

  • inserting an endoscope having a working channel into the body of a patient to a point proximate to an injection location;

    inserting an apparatus comprising a cannula having a non-coring needle disposed at the forward end thereof through said working channel of said cystoscope and into the tissues of said patient to a point immediately adjacent said injection location, said non-coring needle having an orifice on one side thereof, and said apparatus further comprising indicia inscribed thereon in predetermined alignment with said one side of said non-coring needle upon which said orifice is located, said indicia being visible to said physician when said needle is positioned adjacent said injection location;

    observing the orientation of said indicia to determine the orientation of said needle orifice;

    rotating said cannula and said needle until said orifice on said needle is aligned toward said injection location; and

    injecting a viscous substance through said cannula and said needle into said injection location.

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