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. 20, 1979
Filed:
Apr. 20, 1977
John P Lysfjord, Minneapolis, MN (US);
James K Byland, St. Paul, MN (US);
Medtronic, Inc., Minneapolis, MN (US);
Abstract
A set of heart stimulator leads including first and second leads is disclosed for respectively stimulating and sensing the atrium and ventricle of a patient's heart. The proximal end of each of the aforementioned first and second leads is associated with a heart pacemaker of the atrial-sensing, ventricular-inhibited (ASVIP) or sequential type, both of which have leads that are attached to the atria and ventricles. It is critical to ensure that the first and second leads associated respectively with the atrium and ventricle of the patient's heart, are not interchanged, which condition could possibly cause arrhythmias and morbidity, and is ensured by configuring the proximal end of each of the first and second leads so that both of these leads may not be inserted into the incorrect openings or bores of the pacemaker at the same time. In particular, the first or atrial lead has a portion adjacent to its proximal end of reduced dimension that permits its insertion into the corresponding first or atrial bore of the pacemaker, whereas the second or ventricle lead has a larger diameter at a corresponding portion adjacent the proximal end thereof corresponding to the dimension of the second or ventricular bore of the pacemaker, permitting insertion therein, but being greater than that of and thus not permitting insertion within the first or atrial bore of the pacemaker.