Jiyu Feng

US Patent:

52902226, Mar 1, 1994

Filed:

Oct 15, 1991

Appl. No.:

7/776440

Inventors:

Jiyu Feng - Arcadia CA
Esther C. Feng - Arcadia CA

International Classification:

A61M 3700

US Classification:

604 86

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. One variation has an open cut-out slit at the open end of needle sheath to receive and engage in a locking relation with a lug.