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:
Jul. 08, 2003
Filed:
May. 24, 2000
Christer Ekwall, Spånga, SE;
Pacesetter AB, Järfälla, SE;
Abstract
A sensor arrangement, and a heart stimulator employing such a sensor arrangement, identify bending of an electrode lead. A lead which is implantable in a patient is subjected to bending due to movement of the surrounding tissue, and the lead has a deformation sensor therein which emits an electrical signal dependent on the magnitude and orientation of the bending. The deformation sensor can be formed by two parallel channels extending from the tip of the lead within an insulating sleeve of the lead which encloses a conductor element. The channels are filled with an electrically conductive fluid and are connected at their opposite ends to a resistance measuring unit. Bending of the lead causes the resistance of the fluid to change, which is measured by the resistance measuring unit. The channels can be disposed asymmetrically relative to a longitudinal axis of the lead, so that orientation of the bending can also be identified by comparing signals from the respective channels to each other.