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:
Nov. 15, 1994
Filed:
Aug. 04, 1992
Michael J Horzewski, San Jose, CA (US);
Jeffrey L Kraus, San Jose, CA (US);
Danforth Biomedical Incorporated, Menlo Park, CA (US);
Abstract
The present invention is a catheter having a guidewire lumen slidable sleeve. The lumen and sleeve have aligned apertures, which may be closed by moving the slidable sleeve. When the apertures are aligned, a guidewire may be loaded from the distal end of the catheter through the lumen. The guidewire is forced out of the lumen by a ramp in the lumen. The ramp is at the end of a removable core member, which provides enhanced shaft rigidity. The catheter may be converted from a 'monorail' to an 'over-the-wire' configuration by moving the slidable sleeve to close the aperture and advancing a replacement guidewire through the guidewire lumen past the now sealed aperture. A non-circular cross-section is used for the lumen, removable core member, and slidable sleeve, thereby maintaining orientation of the lumen and slidable sleeve apertures should the catheter undergo rotational flexing during use.