Apparatus for measuring electrical activity in the heart with graphical display of electrode contact with tissue
AssigneeSiemens Elema AB
InventorsEstan Laurent, Monica Magnusson
Life of this patent
Estimating the term…
Abstract
An apparatus for measuring electrical activity in the heart, such as an ECG apparatus, has an input amplifier with multiple inputs to which the respective poles of electrodes introduced into a patient are intended to be connected. The input amplifier includes a sensing stage for sensing the impedance across the amplifier inputs after connection of the electrodes, in order to identify the poles which are in contact with the patient's heart. A display is connected to the input amplifier to graphically indicate which electrode poles are connected, and which are in contact with the heart.
Claims8
A medical apparatus comprising:
- a plurality of electrodes, each electrode having a plurality of poles, at least some of said poles being introducible into patient for contact with the heart of said patient;
- an input amplifier unit having a plurality of inputs to which said poles of said plurality of electrodes are respectively connected;
- sensing means in said input amplifier unit for sensing an impedance across the inputs of said input amplifier unit after connection of said electrodes thereto for identifying poles which are in contact with the heart;
- and
- display means connected to said input amplifier unit for graphically indicating which of said poles are connected to said input amplifier unit and which of said poles are in contact with said heart.
Dependencies are inferred from the claim text.