System for treatment of heart tissue using viability map

• US 6,447,504 B1
• Filed: 10/12/2000
• Issued: 09/10/2002
• Est. Priority Date: 07/02/1998
• Status: Expired due to Term

• Current Assignee: Biosense, Inc. (Cardinal Health, Inc.)
• Original Assignee: Biosense, Inc. (Cardinal Health, Inc.)
• Inventors: Ben-Haim, Shlomo, Yaron, Uri
• Primary Examiner(s): GIBSON, ROY DEAN
• Application Number:
  US09/689,258
• Time in Patent Office: 698 Days
• Field of Search: 606/7, 606/10, 606/12, 606/15, 606/17, 606/33, 606/41, 606/49, 607/89
• US Class Current: 606/15
• CPC Class Codes: A61B 18/24 with a catheter A61B18/26, A61B18/28 take precedence
• CPC Class Codes: A61B 18/26 for producing a shock wave, e.g. laser lithotripsy
• CPC Class Codes: A61B 2017/00039 Electric or electromagnetic phenomena other than conductivity, e.g. capacity, inductivity, Hall effect
• CPC Class Codes: A61B 2017/00053 Mapping
• CPC Class Codes: A61B 2017/00247 Making holes in the wall of the heart, e.g. laser Myocardial revascularization
• CPC Class Codes: A61B 2018/00291 using suction
• CPC Class Codes: A61B 2018/00392 Transmyocardial revascularisation
• CPC Class Codes: A61B 2034/2051 Electromagnetic tracking systems
• CPC Class Codes: A61B 2090/3958 emitting a signal
• CPC Class Codes: A61B 34/20 Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis

Abstract

A system for treatment of tissue, such as heart tissue, includes a laser source and a catheter having an optical waveguide which is operatively connected to the laser source. The catheter also includes a position sensor for generating position signals relating to the distal end of the catheter and an electrode for generating signals relating to the viability of the tissue. The system also includes signal processing circuitry for processing the position signals in order to determine position coordinates of the distal end of the catheter as well as the signals relating to the viability of the tissue for determining a viability map of the tissue. The system further includes a display for displaying the viability map.

Claims

1. A system for treatment of a tissue, the system comprising:

(a) a laser source;

(b) a catheter having;

(i) an optical waveguide operatively connected to the laser source;

(ii) a position sensor for generating position signals relating to a distal end of the catheter;

(iii) an electrode for generating signals relating to viability of the tissue;

(c) signal processing circuitry for processing the position signals for determining position coordinates of the distal end of the catheter and the signals relating to viability of the tissue for determining a viability map of the tissue; and

(d) a display for displaying the viability map.

2. The system according to claim 1, wherein the viability map includes electrophysiological data.

3. The system according to claim 2, wherein the viability map includes biomechanical data.

4. The system according to claim 1, wherein the laser source is pulsed.

5. The system according to claim 4, wherein the laser source is Ho:

YAG.

6. The system according to claim 5, wherein the signal processing circuitry also determines orientation coordinates for the distal end of the catheter.

7. The system according to claim 1, wherein the position sensor is a magnetic field-responsive sensor.

8. The system according to claim 7, wherein the position sensor is an ultrasound sensor.

9. The system according to claim 7, further comprising a reference element for establishing a frame of reference for the position sensor.

10. The system according to claim 1, wherein the tissue is in a patient'"'"'s heart.