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:
Aug. 30, 2005
Filed:
Jun. 06, 2002
Masayoshi Esashi, Sendai-shi, Miyagi 982-0807, JP;
Yoichi Haga, Sendai-shi, Miyagi 980-0803, JP;
Takashi Mineta, Yamagata, JP;
Masayoshi Esashi, Sendai-shi, Miyagi 982-0807, JP;
Yoichi Haga, Sendai-shi, Miyagi 980-0803, JP;
Takashi Mineta, Yamagata, JP;
Other;
Abstract
An active guide wire () that can be used in a narrow blood vessel in a complicate vascular system such as intracerebral is disclosed as well as a method of making the same. The active wire comprises a bias coil spring (); an outer tube () having the bias coil spring () sheathed therewith and providing an external wall for the active wire guide (); and a shape memory alloy (SMA) actuator () in the form of a flat sheet anchored in and securely connected to the outer tube (), wherein the flat sheet SMA actuator () is shape memorized so as to bend in a direction of the thickness of the flat sheet and has a shape running zigzag longitudinally thereof. The actuator () is energized with an electric current and thereby heated to have its leading end bent.