Patents by Inventor Yosuka Okada

Yosuka Okada 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).

  • Catheter introducer
    Patent number: 5672158
    Abstract: A catheter introducer (31) which allows a dilator section (33) and a sheath section (32) to be engaged with and disengaged from each other promptly and smoothly. The catheter introducer (31) is composed of a sheath section (32) consisting of a sheath (35) and a sheath hub (34) and a dilator section (33) consisting of a dilator (38) and a dilator hub (36). The dilator hub (36) includes a flange (37) to cover the end of said sheath hub 34) in the state of engagement formed at the distal end of the dilator hub (36), a circular groove (40) formed in the internal circular portion of the flange (37) or in the external circular portion of the sheath hub (34), and a protrusion (39) to be engaged with said groove wherein the protrusion is formed on the external circular portion of the sheath hub or on the internal circular portion of the flange.
    Type: Grant
    Filed: July 6, 1994
    Date of Patent: September 30, 1997
    Assignee: Sherwood Medical Company
    Inventors: Yosuka Okada, Munehito Kurimoto