METHOD FOR SIMULATING A CATHETER GUIDANCE SYSTEM FOR CONTROL, DEVELOPMENT AND TRAINING APPLICATIONS

• US 20110091853A1
• Filed: 10/20/2009
• Published: 04/21/2011
• Est. Priority Date: 10/20/2009
• Status: Abandoned Application

• Current Assignee: Neuro-Kinesis Corporation
• Original Assignee: Magnetecs Incorporated
• Inventors: Johnson, David, Kim, Steven, Mark, Bruce, Farkas, Leslie, Shachar, Yehoshua
• Application Number:
  US12/582,621
• Publication Number:
  US 20110091853A1
• Time in Patent Office: Days
• US Class Current: 434/262
• CPC Class Codes: A61B 2034/2051 Electromagnetic tracking systems
• CPC Class Codes: A61B 34/20 Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
• CPC Class Codes: A61B 34/35 for telesurgery
• CPC Class Codes: A61B 5/061 Determining position of a probe within the body employing means separate from the probe, e.g. sensing internal probe position employing impedance electrodes on the surface of the body A61B1/00158 takes precedence
• CPC Class Codes: G05B 13/048 using a predictor
• CPC Class Codes: G09B 23/285 for injections, endoscopy, bronchoscopy, sigmoidscopy, insertion of contraceptive devices or enemas

Abstract

A system is disclosed for incorporating a realistic simulated catheter or catheters within a catheter guidance and control system that operate from the same closed-loop position control feedback and geometric mapping data as the real position control system and are able to make contact with real and simulated datasets. These catheters may be operated in a pure simulation mode without interacting with real catheters and position control hardware, or may be used as control cursors to enhance the placement of catheter positioning targets. The catheter tip, which is focus of magnetic control, is realistically guided by the control system parameters, while the remainder of the catheter line is realistically constrained by the mapped chamber geometry and introducer sheath.

Claims

1. A catheter guidance and control simulation system, comprising:

a position detection and mapping system that receives sensor data from a sensor that detects a catheter, said position detection and mapping system producing catheter position data;

a closed-loop control system that receives the catheter position data and 3D geometry created by a mapping process, said closed-loop control system providing output control parameters a position control system that controls a position of the catheter; and

a simulation system that receives said catheter position data, said 3D geometry, and said output control parameters and computes a predicted catheter position, said predicted catheter position provided to said closed-loop control system, said closed-loop control system adjusting said output control parameters in response to said predicted catheter position.

2. The system of claim 1, further comprising a display that displays an actual catheter position using said catheter position data and a simulated catheter position using said predicted catheter position.

3. The system of claim 1, wherein said simulation system comprises a Runge-Kutta Ordinary Differential Equation based physics engine to simulate the geometry and dynamics of the catheter within a three dimensional manifold.

4. A simulation and training system, comprising:

a user input control;

a control module that receives user input data from said user input control and produces control outputs; and

a simulation system that receives said user input data, mapping data, and said control outputs and computes simulated position data of a catheter according to a physics model of a catheter in a body cavity and controlled by a system of one or more electromagnets, said simulated position data provided to said control module, said control module configured to use said simulated position data as feedback of an actual catheter position and to compute said control outputs using closed-loop feedback.