# US 12,245,902 B2 · Signal tag detection components, devices, and systems

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- Number: US 12,245,902 B2
- Document ID: US12245902B2
- Status: Granted
- Kind: B2
- Application number: 17/488,954
- Filed: 2021-09-29
- Published: 2022-01-20
- Granted: 2025-03-11
- Earliest claimed: 2015-10-02
- Assignees: Elucent Medical, Inc.
- Applicants: Elucent Medical, Inc.
- Inventors: Daniel W. van der Weide; Fred T. Lee, Jr.; Robert C. Stewart; Lee G. Wilke
- Web page: https://patentgrep.com/patent/US12245902B2

## CPC

- A61B 90/39: {Markers, e.g. radio-opaque or breast lesions markers}
- A61B 18/1402: {Probes for open surgery}
- A61B 90/98: using electromagnetic means, e.g. transponders
- A61B 34/20: Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
- A61B 2017/00115: {with audible or visual output}
- A61B 2017/00199: {with a console, e.g. a control panel with a display}
- A61B 2018/00904: {Automatic detection of target tissue}
- A61B 2018/00988: {Means for storing information, e.g. calibration constants, or for preventing excessive use, e.g. usage, service life counter}
- A61B 2090/3908: {Soft tissue, e.g. breast tissue}
- A61B 2090/3945: {Active visible markers, e.g. light emitting diodes}
- A61B 2090/3958: {emitting a signal}
- A61B 2090/3962: {palpable}
- A61B 2562/0223: Magnetic field sensors
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

Provided herein are systems, devices, assemblies, and methods for localization of a tag in a tissue of a patient. For example, provided herein are systems, devices, and methods employing a detection component that is attached to or integrated with a surgical device, where the detection component detects a signal from a tag in a patient, where the tag is activated by remote introduction of a magnetic field.

## Claims

### Claim 1

A system comprising:
a remote activating device that generates a magnetic field; wherein said remote activating device comprises a pad configured to be positioned: i) on or under a patient, or ii) on or under a table or bed said patient is on, wherein said pad comprises multiple activating coils;
a first wireless tag that is insertable at a location in or on a tissue of said patient, wherein said first wireless tag is activated by said magnetic field;
a second wireless tag coupled to a surgical instrument; wherein the second wireless tag is activated by said magnetic field;
a control unit comprising a processor and a control software, wherein said control unit is linked to said remote activating device; and
a display component configured to provide a distance of the surgical instrument to a user-defined boundary around said first wireless tag; wherein said display component is removably mounted to said surgical instrument.

### Claim 2 (depends on 1)

The system of claim 1, wherein the user-defined boundary is a sphere.

### Claim 3 (depends on 1)

The system of claim 1, wherein the user-defined boundary is an irregular shape corresponding to a tumor shape.

### Claim 4 (depends on 1)

The system of claim 1, wherein the surgical instrument is a hand-held surgical instrument.

### Claim 5 (depends on 1)

The system of claim 1, wherein the display component is configured to provide a distance of said first wireless tag to the surgical instrument.

### Claim 6 (depends on 1)

The system of claim 1, wherein said first wireless tag comprises an RFID tag.

### Claim 7 (depends on 1)

The system of claim 1, wherein each of said activating coils comprises magnet wire wound around a mandrel.

### Claim 8

A method for localizing a tissue region of a patient, comprising:
placing a remote activating device and a patient in proximity to each other, wherein said remote activating device comprises a pad with multiple activating coils that generate a magnetic field, and wherein said patient comprises a first wireless tag at a location in, on, or proximal to a tissue of said patient;
positioning a surgical instrument with a second wireless tag in proximity to said tissue of said patient such that said patient is between said surgical instrument and said pad;
localizing said first wireless tag in said patient and said second wireless tag by generating a magnetic field with said remote activating device and detecting a signal; and
displaying, on a display component, a distance of the surgical instrument to a user-defined boundary around said first wireless tag; wherein said display component is removably mounted to said surgical instrument.

### Claim 9 (depends on 8)

The method of claim 8, further including providing audible, visual, or tactile feedback when the surgical instrument reaches the user-defined boundary around said first wireless tag.

### Claim 10 (depends on 8)

The method of claim 8, wherein the user-defined boundary is a sphere.

### Claim 11 (depends on 8)

The method of claim 8, wherein the user-defined boundary is an irregular shape corresponding to a tumor shape.

### Claim 12 (depends on 8)

The method of claim 8, wherein the surgical instrument is a hand-held surgical instrument.

### Claim 13 (depends on 8)

The method of claim 8, wherein displaying, on the display component, further includes a distance of said first wireless tag to said surgical instrument.

### Claim 14 (depends on 8)

The method of claim 8, wherein placing the remote activating device and the patient in proximity to each other further includes placing the pad: i) on or under said patient, or ii) on or under a table or bed said patient is on.

### Claim 15 (depends on 8)

The method of claim 8, wherein said first wireless tag comprises an RFID tag.

### Claim 16 (depends on 8)

The method of claim 8, wherein each of said activating coils comprises magnet wire wound around a mandrel.