公开(公告)号：CA2144973A1

公开(公告)日：1994-03-31

申请号：CA2144973

申请日：1993-09-23

Applicant: ENDOCARDIAL THERAPEUTICS INC

Inventor： BEATTY GRAYDON ERNEST ,  KAGAN JONATHAN ,  BUDD JEFFREY R

IPC: A61B5/107 ,  A61B5/296 ,  A61B5/308 ,  A61B18/14 ,  A61B18/18 ,  A61B18/24 ,  A61M25/00 ,  A61N1/362 ,  A61N1/37 ,  A61B5/042 ,  A61B5/0408

Abstract: A system for mapping electrical activity of a patient's heart includes a set of electrodes (19) spaced from the heart wall (18) and a set of electrodes (24, 26) in contact with the heart wall (18). Voltage measurements from the electrodes are used to generate three-dimensional and two-dimensional maps of the electrical activity of the heart.

公开(公告)号：CA2447239C

公开(公告)日：2010-10-19

申请号：CA2447239

申请日：1993-09-23

Applicant: ENDOCARDIAL THERAPEUTICS INC

Inventor： BEATTY GRAYDON ERNEST ,  KAGAN JONATHAN ,  BUDD JEFFREY R

IPC: A61B5/107 ,  A61B5/296 ,  A61B5/308 ,  A61B18/14 ,  A61B18/18 ,  A61B18/24 ,  A61M25/00 ,  A61N1/362 ,  A61N1/37

Abstract: A mapping catheter assembly including a flexible lead body and a deformable lead body. A lumen is provided to accept a reference catheter which includes a distal tip electrode assembly. In use an array of electrode sites are deformed into a spherical shape after the assembly is placed in a heart chamber. The reference electrode assembly is advanced into contact with the heart wall to provide calibration information for the array.

公开(公告)号：CA2447239A1

公开(公告)日：1994-03-31

申请号：CA2447239

申请日：1993-09-23

Applicant: ENDOCARDIAL THERAPEUTICS INC

Inventor： BUDD JEFFREY R ,  KAGAN JONATHAN ,  BEATTY GRAYDON ERNEST

IPC: A61B5/107 ,  A61B5/296 ,  A61B5/308 ,  A61B18/14 ,  A61B18/18 ,  A61B18/24 ,  A61M25/00 ,  A61N1/362 ,  A61N1/37 ,  A61B5/042 ,  A61B5/0408

Abstract: A method of representing the geometry of at least a portion of a human heart chamber includes positioning a catheter in a heart chamber. The position of the catheter in the heart chamber is determined. The catheter is re-positioned and the position is re-determined a plurality of times to determine the geometry of at least a portion of the heart chamber. A three-dimensional, anatomical representation of at least a portion of the heart chamber is then created.