United States Patent [w]
Brayton et al.
[li] Patent Number: 4,777,955 [45] Date of Patent: Oct. 18,1988
[54] LEFT VENTRICLE MAPPING PROBE
[75] Inventors: Dennis L. Brayton, Miami Lakes;
Sandra L. Miller, North Miami, both
ofFla.
[73] Assignee: Cordis Corporation, Miami, Fla.
[21] Appl. No.: 115,848
[22] Filed: Not. 2,1987
[51] Int.Cl.* A61B5/04
[52] U.S. CI 128/642
[58] Field of Search 128/642, 696, 772, 786
[56] References Cited
U.S. PATENT DOCUMENTS
3,485,234 12/1969 Stevens 128/772
3,769,984 11/1973 Muench 128/404
3,924,632 12/1975 Cook 128/772
3,949,757 4/1976 Sabel 128/404
4,172,451 10/1979 Kline 128/642
4,365,639 12/1982 Goldreyer 128/786
4,402,328 9/1983 Doring 128/786
4,444,195 4/1984 Gold 128/642
4,522,212 6/1985 Gelinas et al 128/642
4,586,923 5/1986 Gould et al 604/95
4,592,372 6/1986 Beronek 128/786
4,608,986 9/1986 Beronek et al 128/786
4,682,603 7/1987 Franz 128/642
4,699,147 10/1987 Chilson et al 128/642
Primary Examiner—William E. Kamm
Attorney, Agent, or Firm—Henry W. Collins; Thomas R.
Vigil
[57] ABSTRACT
The cardiac mapping lead comprises a main body portion and a tip portion having a tip. The main body portion is relatively flexible longitudinally and relatively stiff in a rotational sense so as to be torque transmitting when rotated. The tip portion includes a relatively flexible body having a preformed "pigtail" shape and one or more sleeve electrodes thereon. The torque transmitting main body portion can be rotated a predetermined amount at the proximal end thereof to effect like rotation of the tip portion in the heart chamber for placing the one or more pairs of sleeve electrodes against different, rotationally selected, inner wall surfaces of the heart chamber.
14 Claims, 3 Drawing Sheets
