# US 11,442,232 B2 · Methods for fusing a fiber termination > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,442,232 B2 - Document ID: US11442232B2 - Status: Granted - Kind: B2 - Application number: 16/861,357 - Filed: 2020-04-29 - Published: 2020-08-13 - Granted: 2022-09-13 - Earliest claimed: 2016-08-12 - Assignees: Boston Scientific Scimed, Inc. - Applicants: Boston Scientific Scimed, Inc. - Inventors: Wen-Jui Ray Chia; Thomas Charles Hasenberg - Web page: https://patentgrep.com/patent/US11442232B2 ## CPC - G02B 6/3834: {Means for centering or aligning the light guide within the ferrule} - G02B 6/3813: {for transmission of high energy beam (coupling high energy sources and light guides G02B6/4296)} - G02B 6/385: {Accessories for testing or observation of connectors (means for centering or aligning the light guide within the ferrule with auxiliary facilities for movably aligning or adjusting the fibre within its ferrule, measuring position, eccentricity G02B6/3843; mechanical features associated with the optical testing of optical fibres G01M11/088)} - G02B 6/3855: {characterised by the method of anchoring or fixing the fibre within the ferrule (G02B6/3854 takes precedence)} - G02B 6/4296: {coupling with sources of high radiant energy, e.g. high power lasers, high temperature light sources} - G02B 6/25: Preparing the ends of light guides for coupling, e.g. cutting - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract Aspects of the disclosure are drawn to methods for producing a fused connector termination. An exemplary method may include setting a specification requirement to be met by the fused connector termination and applying an amount of heat to a proximal region of an unfused connector termination. The proximal region of the unfused connector termination may include an inner optical fiber coaxially positioned within an outer ferrule, and applying the amount of heat may at least partially fuse the optical fiber to the outer ferrule to form an at least partially fused connector termination. The method may also include imaging the proximal region of the at least partially fused connector termination and determining, based on the imaging, whether the proximal region of the at least partially fused connector termination meets the specification. ## Claims ### Claim 1 A system for forming a fused connector end, the system comprising: a heat source configured to apply heat to a proximal portion of a connector termination in order to fuse an optical fiber to a ferrule; and an optical imaging device positioned so as to provide images of a proximal face of the connector termination, wherein the images indicate whether the proximal face of an at least partially-fused connector termination meets a pre-determined specification, wherein the optical imaging device has a viewing axis that is coaxial with a longitudinal axis of the optical fiber. ### Claim 2 (depends on 1) The system of claim 1, wherein the optical imaging device is a first optical imaging device, and the viewing axis is a first viewing axis, and wherein the system further comprises: a second optical imaging device having a second viewing axis, wherein the second viewing axis is different from the first viewing axis. ### Claim 3 (depends on 2) The system of claim 2, further comprising a third optical imaging device having a third viewing axis, wherein the third viewing axis is different from both the first viewing axis and the second viewing axis. ### Claim 4 (depends on 1) The system of claim 1, wherein the optical imaging device is movable relative to the heat source to provide imaging along a plurality of viewing axes. ### Claim 5 (depends on 1) The system of claim 1, wherein the imaging device includes a microscope or an image sensor. ### Claim 6 (depends on 1) The system of claim 1, wherein the heat source is a first heat source, and further comprising a second heat source. ### Claim 7 (depends on 6) The system of claim 6, wherein the first heat source is directed toward a proximal face of the optical fiber, and wherein the second heat source is directed toward a circumferential side of a proximal portion of the optical fiber. ### Claim 8 (depends on 7) The system of claim 7, wherein the second heat source is movable about a circumference of the proximal portion of the optical fiber. ### Claim 9 (depends on 1) The system of claim 1, wherein the heat source is oriented substantially perpendicular relative to the longitudinal axis of the optical fiber or substantially parallel to the longitudinal axis of the optical fiber. ### Claim 10 (depends on 1) The system of claim 1, further comprising: a processor configured to (1) calculate an appropriate position of the heat source or the optical imaging device based on a specification of the connector termination, or (2) control a position of the heat source or the optical imaging device. ### Claim 11 (depends on 1) The system of claim 1, further comprising a user interface or a display. ### Claim 12 (depends on 1) The system of claim 1, further comprising a holder or clamp configured to position the optical fiber relative to the imaging device. ### Claim 13 A system for forming a fused connector end, the system comprising: a heat source; a first optical imaging device positioned so as to provide images of a connector termination including an optical fiber and a ferrule along a first viewing axis; and a second optical imaging device positioned so as to provide images of the connector termination along a second viewing axis, wherein the second viewing axis differs from the first viewing axis, and wherein the first viewing axis is parallel to or coaxial with a longitudinal axis of the optical fiber, wherein the heat source is positioned to apply heat to both the ferrule and the optical fiber of the connector termination. ### Claim 14 (depends on 13) The system of claim 13, further comprising a third optical imaging device configured to provide images of the connector termination along a third viewing axis, wherein the third viewing axis is different from both the first viewing axis and the second viewing axis. ### Claim 15 (depends on 13) The system of claim 13, further comprising: a processor configured to (1) calculate an appropriate position of the heat source, the first optical imaging device, or the second optical imaging device based on a specification of the connector termination, or (2) control a position of the heat source, the first optical imaging device, or the second optical imaging device. ### Claim 16 A system for forming a fused connector end, the system comprising: a movable heat source heat source configured to apply heat to a proximal portion of a connector termination in order to fuse an optical fiber to a ferrule; and a first optical imaging device positioned proximate to the optical fiber when the heat source applies heat to the proximal portion of the connector termination, wherein the first optical imaging device has a first viewing axis that is parallel to or coaxial with a longitudinal axis of the optical fiber, wherein the heat source is positioned to apply heat to both the ferrule and the optical fiber of the connector termination. ### Claim 17 (depends on 16) The system of claim 16, wherein the system further comprises: a second optical imaging device having a second viewing axis, wherein the second viewing axis is different from the first viewing axis. ### Claim 18 (depends on 17) The system of claim 17, further comprising a third optical imaging device having a third viewing axis, wherein the third viewing axis is different from both the first viewing axis and the second viewing axis. ### Claim 19 (depends on 1) The system of claim 1, wherein the pre-determined specification includes one or more of the following specifications: a diameter of the proximal face of the connector termination, a depth of the proximal face of the connector termination, a curvature of the proximal face of the connector termination, a surface smoothness of the proximal face of the connector termination, a depth of heat penetration, or an extent of fusion of the inner optical fiber to the outer ferrule. ### Claim 20 (depends on 1) The system of claim 1, wherein the optical imaging device is positioned so as to provide images of a proximal face of the ferrule and a proximal face of the optical fiber.