# US 2025/0366902 A1 · Illuminated electrosurgical devices, systems and methods > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0366902 A1 - Document ID: US20250366902A1 - Status: Published application - Kind: A1 - Application number: 19/304,249 - Filed: 2025-08-19 - Published: 2025-12-04 - Earliest claimed: 2018-04-20 - Applicants: Medtronic Advanced Energy LLC - Inventors: Roger Greeley; David Hubelbank; Ethan Carter; Xiaoming Cheng; William Siopes - Web page: https://patentgrep.com/patent/US20250366902A1 ## CPC - A61B 18/1442: {Probes having pivoting end effectors, e.g. forceps} - A61B 18/148: {having a short, rigid shaft for accessing the inner body transcutaneously, e.g. for neurosurgery or arthroscopy} - A61B 18/1206: {Generators therefor} - A61B 90/30: Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure - A61B 2018/00107: {Coatings on the energy applicator} - A61B 2018/00589: {Coagulation} - A61B 2018/00601: {Cutting} - A61B 2018/1412: {Blade} - A61B 2090/306: {using optical fibres} - A61B 2090/309: {using white LEDs} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract Embodiments relate to illuminated electrosurgical devices and related systems and methods. An electrosurgical device can include an electrosurgical blade having a proximal end, a distal end with a distal tip, and a dielectric coating including at least one light-guiding element; an optic having a proximal end and a distal end, the distal end of the optic optically coupled to the proximal end of the electrosurgical blade; and a light source arranged at the proximal end of the optic and configured to provide light that is guided through the optic, into the at least one light-guiding element, and out of the dielectric coating at the distal tip of the electrosurgical blade to illuminate an area around the distal tip of the electrosurgical blade. ## Claims ### Claim 1 An electrosurgical device comprising: an electrosurgical blade having a proximal end, a distal end with a distal tip, and a dielectric coating including at least one light-guiding element; an optic having a proximal end and a distal end, the distal end of the optic optically coupled to the proximal end of the electrosurgical blade; and a light source arranged at the proximal end of the optic and configured to provide light that is guided through the optic, into the at least one light-guiding element of the dielectric coating, and out of the dielectric coating at the distal tip of the electrosurgical blade to illuminate an area around the distal tip of the electrosurgical blade. ### Claim 2 (depends on 1) The electrosurgical device of claim 1, wherein the light source comprises at least one light-emitting diode (LED). ### Claim 3 (depends on 1) The electrosurgical device of claim 1, wherein the optic comprises a lens at the proximal end of the optic. ### Claim 4 (depends on 3) The electrosurgical device of claim 3, wherein the lens is a collimator total internal reflection (TIR) lens. ### Claim 5 (depends on 1) The electrosurgical device of claim 1, wherein the at least one light-guiding element comprises at least one pattern of texture formed on the electrosurgical blade. ### Claim 6 (depends on 1) The electrosurgical device of claim 1, wherein the at least one light-guiding element comprises a multi-layered dielectric coating. ### Claim 7 (depends on 6) The electrosurgical device of claim 6, wherein the multi-layered dielectric coating comprises a base layer and a top layer. ### Claim 8 (depends on 7) The electrosurgical device of claim 7, wherein at least one of a pigment, a composite content or a degree of crystallinity varies from the base layer to the top layer. ### Claim 9 (depends on 6) The electrosurgical device of claim 6, wherein at least one optical element is embedded in the multi-layered dielectric coating. ### Claim 10 (depends on 9) The electrosurgical device of claim 9, wherein the at least one optical element is an optical fiber. ### Claim 11 (depends on 9) The electrosurgical device of claim 9, wherein an array of optical fibers is embedded in the multi-layered dielectric coating. ### Claim 12 (depends on 1) The electrosurgical device of claim 1, wherein the dielectric coating comprises glass. ### Claim 13 (depends on 1) The electrosurgical device of claim 1, wherein the illuminated area around the distal tip of the electrosurgical blade has a diameter of about two inches. ### Claim 14 A method comprising: coating an electrosurgical blade having a proximal end, and a distal end with a distal tip, with a dielectric coating including at least one light-guiding element; optically coupling a distal end of an optic to the proximal end of the electrosurgical blade; and arranging a light source at a proximal end of the optic to provide light that is guided through the optic, into the at least one light-guiding element of the dielectric coating, and out of the dielectric coating at the distal tip of the electrosurgical blade to illuminate an area around the distal tip of the electrosurgical blade. ### Claim 15 (depends on 14) The method of claim 14, further comprising forming the optic to include a lens at the proximal end of the optic. ### Claim 16 (depends on 15) The method of claim 15, wherein arranging the light source further comprises arranging the light source relative to the lens of the optic such that total internal reflection (TIR) of the light occurs in the optic. ### Claim 17 (depends on 14) The method of claim 14, wherein coating the electrosurgical blade with the dielectric coating further comprises forming a multi-layered dielectric coating. ### Claim 18 (depends on 17) The method of claim 17, wherein coating the electrosurgical blade with the dielectric coating further comprises forming at least one optical fiber in the multi-layered dielectric coating as the at least one light-guiding element. ### Claim 19 (depends on 14) The method of claim 14, wherein forming the at least one light-guiding element further comprises forming at least one pattern on the electrosurgical blade.