INTRAVENOUS CHANNEL CARDIAC
ELECTRODE AND LEAD ASSEMBLY AND
 Inventor: Charles E. McCorkle, Jr., 1427 E.
Bayview Dr., Tempe, Ariz. 85283
 Appl. No.: 76,910
 Filed: Sep. 19,1979
 Int. C1.3 A61N1/04
 U.S. CI 128/786; 128/419 P
 Field of Search 128/419 P, 784, 785,
 References Cited
U.S. PATENT DOCUMENTS
3,865,118 2/1975 Bures 128/786
4,057,067 11/1977 Lajos 128/785
FOREIGN PATENT DOCUMENTS
2605590 8/1977 Fed. Rep. of Germany ... 128/419 P
"Medtronics Publication TC68101R", Dec. 1968, pp. 1-21.
Mobin-Uodin et al., "Journal of Thoracic & Cardiovascular Surgery", vol. 54, No. 4, Oct. 1967, pp. 545-548.
Primary Examiner—William E. Kamm
Attorney, Agent, or Firm—Cahill, Sutton & Thomas
An intravenous lead assembly for atriolventricular (AV) sequential pacing includes a channel and a separable core lead. The channel lead and the core lead respectively include first and second helical coil conductors through which first and second wire stylets can be inserted. The first and second helical coil conductors are embedded in first and second elongated silicone rubber sleeves, respectively. The silicone rubber sleeve of the channel lead includes an elongated channel. In use, the core lead is passed through the channel of the channel lead either before or after the channel lead is passed through selected veins into a patient's heart. Handles are provided on the proximal ends of the stylets to enable a physician to manipulate the distal ends of the channel lead and core lead. In one embodiment of the invention, the channel terminates in a side port of the channel lead, enabling the physician to guide the top of the core lead out of the side port and into the right ventricle after the distal end of the channel lead has been positioned in the coronary sinus or the right atrial appendage.
16 Claims, 17 Drawing Figures