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:
May. 15, 1990
Filed:
May. 12, 1989
Applicant:
Inventor:
Maurice A Brewer, Houston, TX (US);
Assignee:
Intermedics, Inc., Angleton, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61N / ;
U.S. Cl.
CPC ...
128785 ; 128786 ;
Abstract
An implantable endocardial lead with retractable fixation device. The fixation device comprises a sharpened helix which can be repeatedly both retracted within a distal end of the lead and displaced outside the lead. A threaded stylet passes through a lumen from a proximal end of the lead to the distal end of the lead, where the threaded stylet is screwed into a piston supporting the helix. When the helix is in an exposed position, torque can be transmitted from the proximal end of the lead through the distal end to the piston and thence to the helix to screw the helix into the endocardial tissue.