1. Articles in category: Patents

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    1. System For Calculating Center Of Anterior Capsule And Method Therefor

      System For Calculating Center Of Anterior Capsule And Method Therefor

      A method for calculating the center of the anterior capsule includes the steps of: photographing the eyeball of a patient with an optical coherence tomography; generating a 3-dimensional image and coordinates based on the data obtained by the optical coherence tomography; photographing the eyeball of the patient to produce an eyeball image; and matching the 3-dimensional image and coordinates to the eyeball image so as to calculate the center of the anterior capsule of the patient. A system for calculating the center of the anterior capsule includes: an optical coherence tomography apparatus for photographing the eyeball of a patient with ...

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    2. Devices, Systems, And Methods For Calibrating An Oct Imaging System In A Laser Surgical System

      Devices, Systems, And Methods For Calibrating An Oct Imaging System In A Laser Surgical System

      An adjustment system for an Optical Coherence Tomography (OCT) imaging system includes an OCT light source; a beam splitter, splitting the OCT light beam into an imaging beam to an imaging arm, and a reference beam to a reference arm; a probe, guiding the imaging beam onto a target and receiving a returned imaging beam from the target; the beam splitter generating an interference beam from the returned imaging beam and a returned reference beam from the reference arm.

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      Mentions: Lingfeng Yu
    3. Inflatable Medical Interfaces And Other Medical Devices, Systems, And Methods

      Inflatable Medical Interfaces And Other Medical Devices, Systems, And Methods

      An inflatable mask with two ocular cavities can seal against a user's face by forming an air-tight seal around the periphery of the user's eye socket. The sealed air-tight ocular cavity can be pressurized to take ocular measurements. The mask can conform to the contours of a user's face by inflating or deflating the mask. In addition, the distance between the user and a medical device (e.g. an optical coherence tomography instrument) can be adjusted by inflating or deflating the mask. Also disclosed herein is an electronic encounter portal and an automated eye examination. Other embodiments ...

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    4. Chronic Total Occlusion Crossing Devices With Imaging

      Chronic Total Occlusion Crossing Devices With Imaging

      An imaging device includes a hollow flexible shaft having a central longitudinal axis and an imaging window therein. An optical fiber extends within the hollow flexible shaft substantially along the central axis. A distal tip of the optical fiber is attached to the hollow flexible shaft and aligned with the imaging window so as to transfer an optical coherence tomography signal through the imaging window.

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      Mentions: Avinger
    5. Insert Imaging Device For Surgical Procedures

      Insert Imaging Device For Surgical Procedures

      Insertable imaging devices, and methods of use thereof in minimally invasive medical procedures, are described. In some embodiments, insertable imaging devices are described that can be introduced and removed from an access port without disturbing or risking damage to internal tissue. In some embodiments, imaging devices are integrated into an access port, thereby allowing imaging of internal tissues within the vicinity of the access port, while, for example, enabling manipulation of surgical tools in the surgical field of interest. In other embodiments, imaging devices are integrated into an imaging sleeve that is insertable into an access port. Several example embodiments ...

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    6. Optical Fiber Beam Directing Systems And Apparatuses

      Optical Fiber Beam Directing Systems And Apparatuses

      In one aspect, the invention relates to a lens (52) configured for optical coherence tomography imaging. The lens includes a substantially cylindrical body (52) having a longitudinal axis and includes a first end, an outer cylindrical surface, and a beam directing surface at a second end, the substantially cylindrical body and the outer cylindrical surface defining a trench (58) in between the first end and the beam directing surface, the beam directing surface being oriented at an angle to the longitudinal axis, and the trench being sized to accept an optical fiber. In another aspect, the invention relates to a ...

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      Mentions: St. Jude Medical
    7. Apparatus And Methods For Optical Coherence Tomography And TWO-PHOTON Luminescence Imaging

      Apparatus And Methods For Optical Coherence Tomography And TWO-PHOTON Luminescence Imaging

      Exemplary embodiments of the present disclosure include a combined catheter- based optical coherence tomography - two-photon luminescence (OCT-TPL) imaging system. Exemplary embodiments further include methods to detect, and further characterize the distribution of cellular components (e.g., macrophage, collagen/elastin fiber, lipid droplet) in thin-cap fibroatheromas with high spatial resolution in vivo.

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    8. System And Method For Ophthalmic Laser Surgery Employing Eye Tracking Without Eye Docking

      System And Method For Ophthalmic Laser Surgery Employing Eye Tracking Without Eye Docking

      A system and method for performing ophthalmic surgery using an ultra-short pulsed laser is provided. The system includes a laser engine configured to provide an ultra-short pulsed laser beam, optics configured to direct the laser beam to an undocked eye of a patient, an eye tracker configured to measure five degrees of freedom of movement of the undocked eye, an optical coherence tomography module configured to measure depth of the undocked eye, and a controller configured to control laser beam position on the undocked eye toward a desired laser pattern based on depth and the five degrees of freedom of ...

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    9. Improved User Interface For Acquistion, Display And Analysis Of Ophthalmic Diagnostic Data

      Improved User Interface For Acquistion, Display And Analysis Of Ophthalmic Diagnostic Data

      Improvements to user interfaces for ophthalmic imaging systems, in particular Optical Coherence Tomography (OCT) systems are described to improve how diagnostic data are displayed, analyzed and presented to the user. The improvements include user customization of display and reports, protocol driven work flow, bookmarking of particular B-scans, accessing information from a reference library, customized normative databases, and ordering of follow-up scans directly from a review screen.

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    10. Systems And Methods For Variable Mode Optical Coherence Tomography Imaging

      Systems And Methods For Variable Mode Optical Coherence Tomography Imaging

      Systems and methods for improvements to optical coherence tomography systems for operating in different imaging modes are presented. In one embodiment, a system for identifying the presence and type of an adjunct lens operably connected to the OCT instrument for changing between imaging modes in the system is described. In a second embodiment, a system for dynamically autofocusing the OCT system depending on the layer of interest is presented.

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    11. Tunable Laser Array System

      Tunable Laser Array System

      A system for swept source optical coherence tomography, the system including a light source emitting multiplexed wavelength-swept radiation over a total wavelength range, the light source including N wavelength-swept vertical cavity lasers (VCL) emitting N tunable VCL outputs having N wavelength trajectories, a combiner for combining the N tunable VCL optical outputs into a common optical path to create the multiplexed wavelength-swept radiation, a splitter for splitting the multiplexed wavelength- swept radiation to a sample and a reference path, an optical detector for detecting an interference signal created by an optical interference between a reflection from the sample and light ...

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    12. Methods and computer program products for quantitative three-dimensional image correction and clinical parameter computation in optical coherence tomography

      Methods and computer program products for quantitative three-dimensional image correction and clinical parameter computation in optical coherence tomography

      Methods and computer program products for quantitative three-dimensional (“3D”) image correction in optical coherence tomography. Using the methods and computer program products, index interface (refracting) surfaces from the raw optical coherence tomography (“OCT”) dataset from an OCT system can be segmented. Normal vectors or partial derivatives of the curvature at a refracting surface can be calculated to obtain a refracted image voxel. A new position of each desired refracted image voxel can be iteratively computed. New refracted corrected voxel positions to an even sampling grid can be interpolated to provide corrected image data. In some embodiments, clinical outputs from the ...

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    13. Method Of Motion Correction In Optical Coherence Tomography Imaging

      Method Of Motion Correction In Optical Coherence Tomography Imaging

      An image data set acquired by an optical coherence tomography (OCT) system is corrected for effects due to motion of the sample. A first set of A-scans is acquired within a time short enough to avoid any significant motion of the sample. A second more extensive set of A-scans is acquired over an overlapping region on the sample. Significant sample motion may occur during acquisition of the second set. A-scans from the first set are matched with A-scans from the second set, based on similarity between the longitudinal optical scattering profiles they contain. Such matched pairs of A-scans are likely ...

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    14. Apparatus and Method for Capturing a Vital Vascular Fingerprint

      Apparatus and Method for Capturing a Vital Vascular Fingerprint

      A method using optical coherence tomography to capture the microvascular network of the superficial layer of the finger skin for the purpose of fingerprint authentication and liveness detection. At the dermal papilla region, the vascular pattern follows the same pattern of the fingerprint and this vascular pattern forms a live vascular fingerprint. This live vascular fingerprint provides for ultrahigh security and a unique way for fingerprint-based personal verification. Because the system is based on blood flow, which only exists in a living person, the technique is robust against spoof attaching. After performing non-contact in-vivo imaging of a human fingertip, a ...

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    15. Broadband Or MID-INFRARED Fiber Light Sources

      Broadband Or MID-INFRARED Fiber Light Sources

      An optical system for use in an imaging procedure includes one or more semiconductor diodes configured to generate an input signal beam with a wavelength shorter than 2.5 microns that is amplified and communicated through optical fiber(s) to a nonlinear element configured to broaden the spectral width to at least 50 nm through a nonlinear effect. A subsystem includes lenses or mirrors to deliver an output beam having a broadened spectrum to an Optical Coherence Tomography apparatus with a sample and reference arm to perform imaging for characterizing the sample. The delivered output beam has a temporal duration ...

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    16. Segmentation and identification of layered structures in images

      Segmentation and identification of layered structures in images

      Disclosed herein are systems and method for segmentation and identification of structured features in images. According to an aspect, a method may include representing an image as a graph of nodes connected together by edges. For example, the image may be an ocular image showing layered structures or other features of the retina. The method may also include adding, to the graph, nodes adjacent to nodes along first and second sides of the graph. The added nodes may have edge weights less than the nodes along the first and second sides of the graph. Further, the method may include assigning ...

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    17. Device and method for measuring an optical break-through in a tissue

      Device and method for measuring an optical break-through in a tissue

      ] The invention relates to a device for measuring an optical penetration that is triggered in a tissue underneath the tissue surface by means of therapeutic laser radiation which a laser-surgical device concentrates in a treatment focus located in said tissue. The inventive device is provided with a detection beam path comprising a lens system which couples radiation emanating from the tissue underneath the tissue surface into the detection beam path. A detector device generating a detection signal which indicates the spatial dimension and/or position of the optical penetration in the issue is arranged downstream of the detection beam path.

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    18. System and method with refractive corrections for controlled placement of a laser beam's focal point

      System and method with refractive corrections for controlled placement of a laser beam's focal point

      A methodology is provided for correcting the placement of a laser beam's focal point. Specifically, this correction is done to compensate for displacements of the focal point that may be caused when implant material (e.g. an Intraocular Lens (IOL)) is positioned on the optical path of the laser beam. The methodology of the present invention then determines a deviation of the laser beam's refracted target position (uncompensated) from its intended target position. A calculation of the deviation includes considerations of the laser beam's wavelength and refractive/diffractive characteristics introduced by the implant material. This deviation is ...

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    19. Surgical microscope system and method

      Surgical microscope system and method

      A microscopy system and method allow observing a fluorescent substance accumulated in a tissue. The tissue can be observed at a same time both with visible light and with fluorescent light. It is possible to observe a series of previously recorded fluorescent light images in superposition with the visible light images. An end of the series of images may be automatically determined. A thermal protective filter may be inserted into a beam path of an illuminating system at such automatically determined end of the series. Further, the fluorescent light image may be analyzed for identifying a coherent fluorescent portion thereof ...

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    20. Gated optical coherence tomography (OCT)

      Gated optical coherence tomography (OCT)

      Systems, methods, and other embodiments associated with gated optical coherence tomography (OCT) are described. One example method includes generating an image control signal to control an OCT apparatus to acquire an image of an embryonic heart at a specified point in time during a cardiac cycle of the embryonic heart. The method may also include controlling the OCT apparatus to acquire the image based on the image control signal. In different examples, the image may be acquired in vivo or from an excised heart that is paced. The OCT apparatus and the embryonic heart may be housed in an environmental ...

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    1-24 of 1747 1 2 3 4 ... 71 72 73 »
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    1. (1 articles) Lingfeng Yu
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