The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 26, 1993
Filed:
Dec. 13, 1991
Dinah B Quiachon, San Jose, CA (US);
Wesley D Sterman, San Francisco, CA (US);
Ronald G Williams, Menlo Park, CA (US);
David C Dillow, Cupertino, CA (US);
Steven G Baker, Sunnyvale, CA (US);
EndoVascular Technologies, Inc., Menlo Park, CA (US);
Abstract
A large-diameter expandable sheath for use in introducing a catheter into a vessel in the body of a patient comprising an elongate sheath tube formed of a flexible material which has proximal and distal extremities and a passage extending therethrough of a maximum predetermined diameter. The distal extremity of the elongate sheath tube is folded longitudinally to a smaller folded diameter. A backflow adapter is secured to the proximal extremity of the elongate sheath tube. The backflow adapter has a central opening therein in registration with the passage in the sheath tube. A valve is disposed in the central opening of the backflow adapter and is movable between open and closed positions. The valve when open permits the catheter to be inserted into the sheath, and when closed serves to form a hemostatic seal about the catheter.