Patents by Inventor Bernard J. Dignam, deceased,

Bernard J. Dignam, deceased, has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Sutureless infusion cannula for ophthalmic surgery
    Patent number: 4692142
    Abstract: An ocular infusion cannula containing a shoulder and a flange may be retained in the sclera during ophthalmic surgery without the use of sutures or vacuum techniques. The shoulder is sufficiently narrow to permit the sclera to expand and contract as it passes over due to resiliency of the sclera, and the gap between the shoulder and the flange is of appropriate width to retain the sclera while permitting a minimum axial slippage.
    Type: Grant
    Filed: February 24, 1986
    Date of Patent: September 8, 1987
    Inventors: Bernard J. Dignam, deceased,, Bonnie M. Dignam, heiress
  • Infusion cannula for ophthalmic surgery
    Patent number: D297046
    Type: Grant
    Filed: February 24, 1986
    Date of Patent: August 2, 1988
    Inventors: Bernard J. Dignam, deceased, by Bonnie M. Dignam, executrix