Patent ID: 6259587
Filing Date: 2001-07-10
Classification: A61M,H02H,H02P

Abstract:
A safety circuit system for a DC motor for use with a fluid delivery system, the safety circuit system comprising:a first voltage potential DC power line coupled to provide a first voltage potential to the DC motor;a second voltage potential DC power line coupled to provide a second voltage potential to the DC motor, wherein the second voltage potential is different from the first potential;a controller that controls at least the first voltage potential on the first voltage potential DC power line;a safety circuit having an enable state and a disable state, wherein a default state is the disable state, wherein the safety circuit is coupled to the controller, wherein the controller controls the safety circuit to place the safety circuit in the enable state independently of controlling the first voltage potential on the first voltage potential DC power line, and wherein the safety circuit is operatively coupled to at least one of the first and second voltage potential DC power lines to inhibit DC flow and forward motion of the DC motor when the safety circuit is in the disable state and to permit DC flow and forward motion of the DC motor when the safety circuit is in the enable state such that the forward motion of the DC motor will occur when the safety circuit is in the enable state.