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:
Dec. 20, 2011
Filed:
Jun. 09, 2008
Nicholas R. Powley, Saint Paul, MN (US);
Graig Leonard Kveen, Maple Grove, MN (US);
Donald Geer, Queensbury, NY (US);
Steven Allex, Shoreview, MN (US);
John Arthur Zawacki, Shorewood, MN (US);
Nicholas R. Powley, Saint Paul, MN (US);
Graig Leonard Kveen, Maple Grove, MN (US);
Donald Geer, Queensbury, NY (US);
Steven Allex, Shoreview, MN (US);
John Arthur Zawacki, Shorewood, MN (US);
R4 Vascular, Inc., Hoboken, NJ (US);
Abstract
A single or multi-port vascular access device including one or more reservoirs each covered by a needle-penetrable, self-sealing septum. The one or more reservoirs each open to an outlet in a stem to which the catheter is attached. The reservoir may be generally circular or ellipsoid in shape and large enough so that fluid movement into and out of the needle is unimpeded. In order to maximize flow between the reservoir and catheter and to minimize any regions of impeded or low fluid flow where coagulation or cell shearing may occur, the fluid passage leading from the reservoir through the outlet into the catheter is defined by unique tapered and tangential geometries. For example, the outlet surface may be globally tangent along the entire reservoir surface, or may be globally tangent along only one side of the reservoir surface.