Patents by Inventor Esther C. Feng

Esther C. Feng 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).

  • Injection port connector with rotatable locking lug
    Patent number: 5290222
    Abstract: An improved injection cap having a lug for locking the injection cap to a tubing connector. One embodiment has a lug integrally constructed on the injection cap. Another embodiment has a lug rotatably attached to the injection cap. Still another embodiment has a lug connected with a wing rotatably attached to the injection cap. An improved Y-injection site having a lug for locking a tubing connector on the Y-injection site. As before one embodiment has a lug integrally constructed on a side branch of a Y-injection site, while another embodiment has a lug rotatably attached to the side branch. The invention includes an improved tubing connector having a tubular needle sheath that is open at one end and closed by needle hub at another end. The sheath incorporates a catch mechanism to receive a lug-shaped attachment on an injection cap or a Y-injection site and ensure a secure connection.
    Type: Grant
    Filed: October 15, 1991
    Date of Patent: March 1, 1994
    Inventors: Jiyu Feng, Esther C. Feng