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United States Patent [193

Hudrlik

[li] Patent Number: 5,265,603 [45] Date of Patent: * Nov. 30,1993

[54] ELECTRONIC CAPTURE DETECTION FOR A PACER

[75] Inventor: Terrence R. Hudrlik, Fridley, Minn.

[73] Assignee: Medtronic, Inc., Minneapolis, Minn.

[ * ] Notice: The portion of the term of this patent subsequent to Oct. 20, 2009 has been disclaimed.

[21] Appl. No.: 626,061

[22] Filed: Dec. 12,1990

[51] Int. CI.' A61N 1/362

[52] U.S. Q 607/9; 607/28

[58] Field of Search 128/419 D, 319 PG

[56] References Cited

U.S. PATENT DOCUMENTS

3,057,356 10/1962 Greatbatch 128/419 PG

3,345,990 10/1967 Berkovits 128/419 PG

4,305,396 12/1981 Wittkampf et al 128/419 PG

4,729,376 3/1988 DeCote, Jr 128/419 PT

4,759,366 7/1988 Callaghan et al 128/419 PG

4,858,610 8/1989 Callaghan et al 128/419 PG

4,878,497 11/1989 Callaghan et al 128/419 PG

OTHER PUBLICATIONS

Biology of the Uterus, edited by Ralph M. Wynn pp. 466-481, publication date unknown. "Voltage-Clamp Studies on Uterine Smooth Muscle" by Nels G. Anderson, Jr. published in the Journal of

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