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:
Mar. 12, 1996
Filed:
Apr. 28, 1994
Mauricio L Fugoso, Chula Vista, CA (US);
Medtronic, Inc., Minneapolis, MN (US);
Abstract
A system for inserting and exchanging a dilatation catheter (18) using a lockable guidewire (23) and a guide catheter (17). The locking mechanism is engaged when a hypotube (31) is retracted in the locking section (8) and exposes the radially expanding corewire (30) which locks the guidewire (23) in place in the guiding catheter (17). The guiding catheter (17) may have a modified catheter inner surface (13) lined with a means for frictional engagement with the radially expanding corewire (30). In one embodiment the guiding catheter (17) can be lined with a threaded means complementary to radially expanding corewire (30) helical coil for mechanically holding the lockable guidewire (23) in place. Once locked, the guidewire (23) remains fixed in relation to the lesion (20) during the exchange of a dilatation catheter (18).