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:
Apr. 11, 1989
Filed:
Oct. 26, 1987
Ronald W Heil, Jr, Roseville, MN (US);
Robert C Owens, Forest Lake, MN (US);
Brian D Pederson, St. Paul, MN (US);
Cardiac Pacemakers, Inc., St. Paul, MN (US);
Abstract
An implantable cardiac pacing lead includes a porous, platinum electrode, a flexible electrically conductive coil, and a crimp tube coupling the electrode to the distal end of the coil. A recess in the crimp tube, open to the electrode at the crimp tube distal end, houses a matrix impregnated with a therapeutic drug. The electrode is highly porous and loaded with a therapeutic drug in liquid or solid form. Immediately upon implant of the electrode at a selected myocardial location, the electrode begins dispensing the therapeutic drug. Meanwhile, the matrix begins to elute its drug at a rate more suited to chronic treatment. If desired, the recess can extend through the crimp tube to permit proximal end loading of the drug carrying matrix. A silicone plug, or an additional and proximal crimp tube section, is inserted into the recess after loading of the matrix to provide the required fluid seal. Finally, a variety of different matrices can be housed in the recess, to provide elution of different drugs and at differing rates.