Device, system, and method for intracardiac diagnosis or therapy with localization
AssigneeSt. Jude Medical, Atrial Fibrillation Division, Inc.
InventorFermin A. Lupotti
Life of this patent
Estimating the term…
Abstract
A medical system for locating a catheter distal tip within a body using a plurality electrical position sensors and a magnetic position sensor in conjunction with an acceleration sensor or rotational encoder. The system locates the catheter by using signals from the acceleration sensor or rotational encoder and magnetic sensors to compensate for positioning errors associated with electric positioning sensors.
Claims21
A catheter for use in a body, the catheter comprising:
- an elongate member comprising a distal portion and a proximal portion;
- the distal portion comprising a plurality of sensors, the plurality of sensors comprising an acceleration sensor, a plurality of electrical position sensors, and a magnetic position sensor;
- and
- a control handle attached to the proximal portion of the elongate member, the control handle comprising a deflection knob configured to deflect the distal portion of the elongate member;
- wherein the sensors are configured to generate signals such that an electronic control unit may determine a position and an orientation of the distal portion in space utilizing the signals.
A system for navigating a medical device in a body comprising:
- an electronic control unit, the electronic control unit being configured to:
- receive a signal from an acceleration sensor located in a distal portion of a catheter;
- receive a signal from a magnetic position sensor located in the distal portion of the catheter;
- receive a signal from each of a plurality of electric position sensors located in the distal portion of the catheter;
- determine a position and an orientation of the distal portion of the catheter utilizing the signals of the electric position sensors, the magnetic position sensor, and the acceleration sensor;
- control a magnetic field generator configured to generate magnetic fields in the body;
- control an electric signal generator configured to generate voltage differentials between one or more electrode patches;
- generate a user interface;
- and
- control a display unit to display the interface.
A method of locating a catheter within a body, the method comprising the steps of:
- acquiring a signal from an acceleration sensor located in a distal portion of the catheter;
- acquiring a signal from a magnetic position sensor located in the distal portion of the catheter;
- acquiring a signal from each of a plurality of electrical position sensors located in the distal portion of the catheter;
- and
- determining a position and orientation of the distal portion of the catheter utilizing the signals of the electrical position sensors, the magnetic position sensor and the acceleration sensor.
Dependencies are inferred from the claim text.