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:
May. 18, 1993
Filed:
Oct. 31, 1990
Hans A Mische, St. Cloud, MN (US);
Lake Region Manufacturing Co., Inc., Chaska, MN (US);
Abstract
A guide wire having state-of-the-art handling characteristics for ease in positioning a variety of catheters and other devices within the cardiovascular or other body system wherein the guide wire is also suitable for infusion of small volumes of fluid. The exceedingly small diameter guide wire has unique infusion properties. The guide wire body has at least one helical coil having a flexible nonporous sheath within the lumen. The helical coil is close wound along the majority of its length. The distal end of the helical coil has spaced windings to permit infusion of the fluid. The flexible nonporous sheath terminates proximal to the space wound portion. The solid core wire, which runs the entire length of the guide wire, is located within the same lumen used for infusion. This provides a greatly increased surface area in relation to the cross sectional area of the infusion lumen ensuring a slow but extremely constant infusion rate over a wide range of infusion pressures.