Method for monitoring revascularization treatment using pre-pmr data and post-pmr data

• US 6,436,095 B1
• Filed: 10/12/2000
• Issued: 08/20/2002
• Est. Priority Date: 01/08/1997
• Status: Expired due to Fees

• Current Assignee: Biosense, Inc. (Cardinal Health, Inc.)
• Original Assignee: Biosense, Inc. (Cardinal Health, Inc.)
• Inventors: Ben-Haim, Shlomo, Yaron, Uri, Zilberstein, Joel
• Primary Examiner(s): GIBSON, ROY DEAN
• Application Number:
  US09/689,257
• Time in Patent Office: 677 Days
• Field of Search: 606/10-16, 606/41, 606/45-50, 607/89, 607/101, 607/102, 607/122, 604/95.01, 604/95.05
• US Class Current: 606/10
• CPC Class Codes: A61B 18/00 Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body eye surgery A61F9/007; ear surgery A61F11/00
• CPC Class Codes: A61B 18/24 with a catheter A61B18/26, A61B18/28 take precedence
• CPC Class Codes: A61B 2017/00243 cardiac
• CPC Class Codes: A61B 2017/00247 Making holes in the wall of the heart, e.g. laser Myocardial revascularization
• CPC Class Codes: A61B 2018/00392 Transmyocardial revascularisation
• CPC Class Codes: A61B 2018/2272 with reflective or refractive surfaces for deflecting the beam A61B2018/2261, A61B2018/2266 take precedence
• CPC Class Codes: A61B 5/0071 by measuring fluorescence emission
• CPC Class Codes: A61B 5/0084 for introduction into the body, e.g. by catheters A61B5/1459 takes precedence
• CPC Class Codes: A61B 5/06 Devices, other than using radiation, for detecting or locating foreign bodies for removing same A61B17/50 ; determining position of probes within or on the body of the patient
• CPC Class Codes: A61B 8/12 in body cavities or body tracts, e.g. by using catheters catheters per se A61M25/00
• CPC Class Codes: A61B 8/4488 the transducer being a phased array
• CPC Class Codes: A61N 5/0601 Apparatus for use inside the body

Abstract

A method for monitoring revascularization treatment provided to tissue, such as heart tissue, comprises the steps of identifying a location in tissue and positioning a catheter at the location. Electrical signals of the tissue are measured in order to establish pre-revascularization data wherein the pre-revascularization data is stored. Energy is imparted to the tissue with the catheter in order to create a channel in the tissue at the location. Electrical signals of the tissue are measured after creation of the channel in order to establish post-revascularization data. The pre-revascularization data and the post-revascularization data are compared in order to determine successful treatment to the tissue.

Claims

1. A method for monitoring revascularization treatment provided to tissue comprising the steps of:

identifying a location in tissue;

positioning a catheter at the location;

measuring electrical signals of the tissue in order to establish pre-revascularization data;

storing the pre-revascularization data;

imparting energy to the tissue with the catheter in order to create a channel in the tissue at the location;

measuring electrical signals of the tissue after creation of the channel in order to establish post-revascularization data, and

comparing the pre-revascularization data to the post-revascularization data in order to determine successful treatment to the tissue.

2. The method according to claim 1, further comprising creating a map based on the pre-revasculatization data.

3. The method according to claim 2, further comprising creating another map based on the post-revascularization data.

4. The method according to claim 3, wherein the maps are created based on the electrical signals of the tissue.

5. The method according to claim 3, wherein the maps are created using ultrasound.

6. The method according to claim 1, further comprising storing the post-revascularization data.

7. The method according to claim 1, wherein the tissue is heart tissue.

8. The method according to claim 7, further comprising measuring electrical signals with the catheter.

9. The method according to claim 7, further comprising measuring electrical signals with a surface ECG.

10. The method according to claim 7, further comprising navigating the catheter with a position sensor.

11. The method according to claim 10, further comprising orienting the catheter at the location.

12. The method according to claim 1, wherein the energy is laser energy.

13. The method according to claim 1, wherein the energy is RF energy.

14. The method according to claim 1, wherein the energy is ultrasound energy.

15. The method according to claim 1, wherein the energy is mechanical energy.