IP Library Granted Patent US 12685444
Granted Patent B2
US 12685444 · App. 18/590,596 · Granted Jul 21, 2026

Analysis of reflected signals during a laser procedure

Inventors: Kester Julian Batchelor (Mound, MN); Sergey A. Bukesov (Acton, MA); Kurt G. Shelton (Bedford, MA); Charles A. Baker (Rogers, MN)
Assignee: Gyrus ACMI, Inc.
A61B5/0075A61B1/0676A61B5/0077G16H50/20A61B2562/02
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Quick Facts
Patent No.
US 12685444
App. No.
18/590,596
Granted
Jul 21, 2026
Kind
B2
Abstract

A system for analyzing a reflected signal during a laser procedure can include a surgical scope. A first light source emitter can be configurable to emit a first signal having a first (e.g., a non-visible) spectrum. A second light source emitter can be configurable to emit a second signal having a second spectrum (e.g., a visible or infrared (IR) spectrum). Each of the first or the second light source emitters can be coupled to or included within the surgical scope. The system can include an optical sensor configurable to detect and analyze a third signal returned from the surface of an object in response to the emitted second signal. The returned third signal can be analyzed to determine whether a reflected absolute or relative intensity or an absolute or relative spectral signature meets at least one criterion, thereby triggering at least one of: warning a user or adjusting the first signal.

Claims (40)

1 . A system for determining a characteristic of an object during a laser procedure, the system comprising:

a surgical scope;

a first light source emitter, coupled to or included within the surgical scope, configurable to emit a first signal having a first spectrum;

a second light source emitter, coupled to or included within the surgical scope, configurable to emit a second signal having a second spectrum, different from the first spectrum;

an optical sensor, configurable to detect a third signal from a surface of the object in response to the emitted second signal;

controller circuitry, coupled to the optical sensor, configured to (i) compare at least one of a spectral signature of the third signal or a reflected intensity of the third signal to at least one criterion and, when the at least one criterion is met, (ii) to cause at least one of sending a warning to a user or adjusting a setting of the first light source emitter; and

a spectrometer configured to perform spectroscopic analysis of the third signal, wherein, responsive to the reflected intensity of the third signal meeting the at least one criterion, the controller circuitry causes the spectrometer to interrupt or terminate spectral analysis of the third signal.

2 . The system of claim 1 , wherein the at least one criterion includes an indication in the spectral signature that emission from the first light source emitter to the object would result in undesired damage.

3 . The system of claim 1 , wherein the at least one criterion includes a determination that the reflected intensity of the third signal falls below a lower-threshold value or exceeds an upper-threshold value.

4 . The system of claim 3 , wherein the reflected intensity of the third signal exceeding the upper-threshold value corresponds to the object being comprised of one or more of: magnesium oxide (MgO), stainless steel, nitinol, a fluoropolymer, a polymer, or a plastic.

5 . The system of claim 1 , wherein the warning includes a visual warning, and wherein the visual warning includes at least one of causing the second light source emitter to flash the second signal or to change a color of the second signal.

6 . The system of claim 1 wherein the surgical scope is an endoscope and wherein the second light source emitter is a visible light source connected to or included on the endoscope.

7 . The system of claim 6 , wherein the second light source emitter is configured to emit light with a wavelength in a range between 400 nm and 750 nm.

8 . The system of claim 1 , wherein the first light source emitter includes at least one of a laser light source or an aiming beam light source emitted through a surgical fiber connected to the surgical scope.

9 . The system of claim 8 , wherein the first light source emitter includes at least one of a blue light laser or a green light laser.

10 . The system of claim 8 , wherein the second light source emitter includes at least one of a visible light source or an infrared (IR) light source connected to the surgical fiber such that the second signal is emitted through the surgical fiber.

11 . The system of claim 8 , wherein the first light source emitter is configured to emit light in a wavelength in a range between 800 nm and 900 nm.

12 . The system of claim 1 , wherein to adjust the first signal includes at least one of changing an intensity of the first signal or disabling the first light source emitter.

13 . A method for determining a characteristic of an object during a laser procedure, the method comprising:

emitting a first signal having a first spectrum from a first light source emitter coupled to or included within a surgical scope;

emitting a second signal having a second spectrum, different from the first spectrum, from a second light source emitter coupled to or included within the surgical scope;

receiving a third signal from a surface of the object in response to the emitted second signal at an optical sensor connected to the surgical scope;

performing spectroscopic analysis of the third signal using a spectrometer coupled to the optical sensor;

comparing, using the optical sensor, at least one of a spectral signature or a reflected intensity of the received third signal to at least one criterion; and

when the at least one criterion is met, interrupting or terminating the spectroscopic analysis and at least one of: i) sending a warning to a user or ii) adjusting a setting of the first light source emitter.

14 . The method of claim 13 , wherein adjusting the first signal includes at least one of changing an intensity of the first signal or disabling the first light source emitter.

15 . The method of claim 13 , wherein the at least one criterion includes an indication in the spectral signature that emission from the first light source emitter to the object would result in undesired damage.

16 . The method of claim 13 , wherein emitting at least one of the first signal or the second signal includes pulsing at least one of the first light source emitter or the second light source emitter for a period of time.

17 . A system to determine a characteristic of an object during a laser procedure, the system comprising:

a processor;

a user interface (UI); and

memory, including instructions that, when executed by the processor, cause the processor to execute operations to:

cause a first signal having a first spectrum to be emitted from a first light source emitter coupled to or included within a surgical scope;

cause a second signal having a second spectrum, different from the first spectrum, to be emitted from a second light source emitter coupled to or included within the surgical scope;

receive a third signal from a surface of the object in response to the emitted second signal at an optical sensor connected to the surgical scope;

cause a spectroscopic analysis of the third signal to be performed using a spectrometer coupled to the optical sensor;

cause the optical sensor to compare at least one of a spectral signature or a reflected intensity of the third signal to at least one criterion, wherein the at least one criterion includes an indication in the spectral signature that emission from the first light source emitter would result in undesired damage; and

when the at least one criterion is met, cause the spectroscopic analysis to be interrupted or terminated and cause at least one of: i) a warning to be sent to the UI or ii) a setting of the first light source emitter to be adjusted.

18 . The system of claim 17 , wherein the first light source emitter includes a laser light source or an aiming beam light source emitted through a surgical fiber connected to the surgical scope, and wherein the second light source emitter includes at least one of a visible light source or an infrared (IR) light source connected to the surgical fiber such that the second signal is emitted through the surgical fiber.

19 . The system of claim 17 , wherein the first light source emitter includes at least one of a blue light laser or a green light laser.