# US 11,298,183 B2 · Fibroid ablation positioning device and methods

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- Number: US 11,298,183 B2
- Document ID: US11298183B2
- Status: Granted
- Kind: B2
- Application number: 15/894,020
- Filed: 2018-02-12
- Published: 2018-06-14
- Granted: 2022-04-12
- Earliest claimed: 2013-11-13
- Assignees: Gyrus ACMI, Inc.
- Applicants: Gyrus ACMI, Inc.
- Inventors: Kester J. Batchelor; Riyad Moe; Richard Curtis; Nikhil Murdeshwar; Huisun Wang
- Web page: https://patentgrep.com/patent/US11298183B2

## CPC

- A61B 18/1492: {having a flexible, catheter-like structure, e.g. for heart ablation (A61B18/1477 takes precedence)}
- A61B 18/1206: {Generators therefor}
- A61B 18/1477: {Needle-like probes}
- A61B 2018/00559: {Female reproductive organs}
- A61B 2018/00577: {Ablation}
- A61B 2018/00642: {with feedback, i.e. closed loop control}
- A61B 2018/00875: {Resistance or impedance}
- A61B 2018/00904: {Automatic detection of target tissue}
- A61B 2018/1425: {Needle}
- A61B 2018/162: {located on the probe body}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

A method of treating a patient with a bioelectrical system is provided. The method may include inserting a probe into a first position in an anatomy of the patient, the system being provided with a plurality of electrodes; energizing a first electrode of the plurality of electrodes with a measurement level of power; determining a complex impedance in the patient's anatomy; determining whether the first position is a desired position of the probe for ablating a predetermined portion of tissue of the patient, based on the complex impedance determined; and energizing one of the plurality of electrodes with an ablation level of power, the ablation level of power being greater than the measurement level of power. An apparatus for performing BIA on a patient is also provided.

## Claims

### Claim 1

A method of treating a target fibroid or other tumor in a patient using a needle probe including at least one electrode located on the needle probe and using a first return electrode and a second return electrode located remote from the needle probe, the method comprising:
measuring a bulk tissue property including complex impedance information indicative of a location of at least a portion of the needle probe with respect to the target fibroid or other tumor, the impedance information determined using the at least one electrode located on the needle probe and at least one of the first and second return electrodes located remote from the needle probe;
providing a user with an indication of the location of at least a portion of the needle probe with respect to the target fibroid or other tumor based on the complex impedance information;
delivering ablation energy to the target fibroid or other tumor via the needle probe when the needle probe is at a desired location determined using the indication of the location of at least a portion of the needle probe with respect to the target fibroid or other tumor based on the complex impedance information;
providing the user with an indication of a condition of the target fibroid or tumor based upon the bulk tissue property during or after the delivering ablation energy to the target fibroid or tumor;
controlling the delivering ablation energy to the target fibroid or other tumor via the needle probe using the indication of the condition of the target fibroid or tumor based on the complex impedance information.

### Claim 2 (depends on 1)

The method of claim 1, further comprising restricting delivering ablation energy to the target fibroid or other tumor via the needle probe to when the needle probe is at a desired location determined using the indication of the location of at least a portion of the needle probe with respect to the target fibroid or other tumor based on the complex impedance information.

### Claim 3 (depends on 1)

The method of claim 1, further comprising:
repeating measuring the bulk tissue property until the indication of location meets at least one desired location criterion; and
enabling delivering ablation energy to the target fibroid or other tumor via the needle probe in response to the indication of the location meeting the at least one desired position criterion.