Patent ID: 6198963
Filing Date: 2001-03-06
Classification: A61B,A61M

Abstract:
A system for determining a position of an object inserted into a patient's body, said system comprising:an object having a sensor, said object being inserted into said patient's body wherein said sensor is adapted to be located within said patient's body, said sensor providing a first sensor signal and a second sensor signal; anda verification device for use outside of said patient's body, said verification device having a measuring unit for receiving said first sensor signal and said second sensor signal provided by said object, said verification device also having a memory device, said verification device being operable in a learn mode and a test mode, wherein in said learn mode, said first sensor signal is provided by said object and received by said measuring unit, said measuring unit forming a control vector based on said first sensor signal, said control vector being stored in said memory device, and wherein in said test mode, said second sensor signal is provided by said object and received by said measuring unit, said measuring unit forming a test vector, said test vector being compared to said control vector in order to verify said position of said object within said patient, wherein said verification device includes a CPU for comparing said test vector to said control vector, said CPU having a predetermined value range, said CPU comparing said control vector to said predetermined value range, said control vector being stored in said memory device when said control vector is within said predetermined value range, wherein said measuring unit generates a first measuring signal and a second measuring signal, said first measuring signal and said second measuring signal being provided to said sensor of said object, said first measuring signal inducing said first sensor signal and said second measuring signal inducing said second sensor signal, said verification device including a power source, and wherein said verification device is positioned at an exterior surface of said patient's body.