US 7,460,907 B1
Pacing with hemodynamic enhancement
Nissim Darvish, Haifa (Israel); Bella Felsen, Haifa (Israel); Itzik Shemer, Haifa (Israel); and Judith Kornfeld, Haifa (Israel)
Assigned to Impulse Dynamics N.V., Curacao (Netherlands Antilles)
Appl. No. 9/720,639
PCT Filed Jul. 18, 1999, PCT No. PCT/IL99/00392
§ 371(c)(1), (2), (4) Date May 16, 2001,
PCT Pub. No. WO00/04947, PCT Pub. Date Feb. 03, 2000.
Claims priority of application No. 125424 (IL), filed on Jul. 20, 1998.
Int. Cl. A61N 1/362 (2006.01)
U.S. Cl. 607—9 78 Claims
OG exemplary drawing
 
1. Apparatus for heart pacing with hemodynamic improvement, comprising:
one or more electrodes, which are adapted to convey electrical signals to respective cardiac muscle segments; and
signal generation circuitry, which applies an extended pacing signal, having an overall duration greater than 8 ms, to the one or more electrodes so as to pace the heart,
wherein the signal has a leading edge and a trailing edge, and wherein the trailing edge is characterized by an absolute rate of voltage change substantially smaller than that of the leading edge.