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公开(公告)号：CA2836790C
公开(公告)日：2019-04-23
申请号：CA2836790
申请日：2012-05-31
Applicant: LIGHTLAB IMAGING INC
Inventor： ADLER DESMOND , SCHMITT JOSEPH , DAHLBERG MATTIAS , GUSTAFSSON PAR , HUBINETTE ULRIK , SAMUELSSON MAGNUS , SVANERUDH JOHAN
Abstract: In part, the invention relates to an image data collection system. The system can include an interferometer having a reference arm that includes a first optical fiber of length of LI and a sample arm that includes a second optical fiber of length of L2 and a first rotary coupler configured to interface with an optical tomography imaging probe, wherein the rotary coupler is in optical communication with the sample arm. In one embodiment, L2 is greater than about 5 meters. The first optical fiber and the second optical fiber can both be disposed in a common protective sheath. In one embodiment, the system further includes an optical element configured to adjust the optical path length of the reference arm, wherein the optical element is in optical communication with the reference arm and wherein the optical element is transmissive or reflective.
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公开(公告)号：CA2837577C
公开(公告)日：2018-05-29
申请号：CA2837577
申请日：2012-05-14
Applicant: LIGHTLAB IMAGING INC
Inventor： PETROFF CHRISTOPHER , SCHMITT JOSEPH
IPC: A61B5/0215 , A61B5/00
Abstract: In part, the invention relates to methods, apparatus, and systems suitable for determining a fractional flow reserve (FFR) and variations of modifications thereof One embodiment relates to a method and apparatus for obtaining a corrected FFR in a vessel having a stenosis. In one aspect, the invention relates to an apparatus for measuring corrected FFR of a vessel having a stenosis. In one embodiment, the apparatus includes a probe comprising an optical coherence tomography assembly and a pressure assembly; and a processor in communication with the optical coherence tomography assembly and the pressure assembly. In one embodiment, the pressure assembly measures values of pressure in predetermined locations the vessel and communicates them to the processor. In one embodiment, a dual guidewire is used to reduce the interference in the pressure measurement.
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公开(公告)号：AU2016297930A1
公开(公告)日：2018-03-08
申请号：AU2016297930
申请日：2016-07-25
Applicant: LIGHTLAB IMAGING INC
Inventor： GOPINATH AJAY , DION DENIS , GRIFFIN CHRISTOPHER E , ADLER DESMOND
Abstract: In part, the disclosure relates to intravascular data collection systems and the software-based visualization and display of intravascular data relating to detected side branches and detected stent struts. Levels of stent malapposition can be defined using a user interface such as a slider, toggle, button, field, or other interface to specify how indicia are displayed relative to detected stent struts. In addition, the disclosure relates to methods to automatically provide a two or three-dimensional visualization suitable for assessing sidebranch and/or guide wire location during stenting. The method can use one or more a computed side branch location, a branch takeoff angle, one or more stent strut locations, and one or more lumen contours.
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公开(公告)号：ES2641487T3
公开(公告)日：2017-11-10
申请号：ES13716492
申请日：2013-03-12
Applicant: LIGHTLAB IMAGING INC
Inventor： SCHMITT JOSEPH , BEZERRA HIRAM , PETROFF CHRISTOPHER , GOPINATH AJAY
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公开(公告)号：CA3005300A1
公开(公告)日：2017-05-26
申请号：CA3005300
申请日：2016-11-16
Applicant: LIGHTLAB IMAGING INC
Inventor： PETERSON JAMES G , GRIFFIN CHRISTOPHER E , AMBWANI SONAL
IPC: A61B5/00
Abstract: In part, the disclosure relates to computer-based methods, devices, and systems suitable for detecting a delivery catheter using intravascular data. In one embodiment, the delivery catheter is used to position the intravascular data collection probe. The probe can collect data suitable for generating one or more representations of a blood vessel with respect to which the delivery catheter can be detected.
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Patent Agency Ranking
公开(公告)号：CA3005280A1
公开(公告)日：2017-05-26
申请号：CA3005280
申请日：2016-11-18
Applicant: LIGHTLAB IMAGING INC
Inventor： DASCAL LORINA , WINKLER ITAI
IPC: G06T5/50
Abstract: The disclosure relates generally to the field of vascular system and peripheral vascular system data collection, imaging, image processing and feature detection relating thereto. In part, the disclosure more specifically relates to methods for detecting position and size of contrast cloud in an x-ray image including with respect to a sequence of x-ray images during intravascular imaging. Methods of detecting and extracting metallic wires from x-ray images are also described herein such as guidewires used in coronary procedures. Further, methods for of registering vascular trees for one or more images, such as in sequences of x-ray images, are disclosed. In part, the disclosure relates to processing, tracking and registering angiography images and elements in such images. The registration can be performed relative to images from an intravascular imaging modality such as, for example, optical coherence tomography (OCT) or intravascular ultrasound (IVUS).
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公开(公告)号：AU2013360356B2
公开(公告)日：2017-04-20
申请号：AU2013360356
申请日：2013-03-12
Applicant: LIGHTLAB IMAGING INC
Inventor： SCHMITT JOSEPH M , BEZERRA HIRAM , PETROFF CHRISTOPHER , GOPINATH AJAY
Abstract: In part, the invention relates to a method for sizing a stent for placement in a vessel. In one embodiment, the method includes the steps of: dividing the vessel into a plurality of segments, each segment being defined as the space between branches of the vessel; selecting a starting point that appears to have substantially no disease; defining the diameter at this point to be the maximum diameter; calculating the maximal diameter of the next adjacent segment according to a power law; measuring the actual diameter of the next adjacent segment; selecting either the calculated maximum diameter or the measured maximum diameter depending upon which diameter is larger; using the selected maximum diameter to find the maximum diameter of this next segment; iteratively proceeding until the entire length of the vessel is examined; and selecting a stent in response to the diameters of the end proximal and distal segments.
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公开(公告)号：CA2993461A1
公开(公告)日：2017-02-02
申请号：CA2993461
申请日：2016-07-25
Applicant: LIGHTLAB IMAGING INC
Inventor： GOPINATH AJAY , DION DENIS , GRIFFIN CHRISTOPHER E , ADLER DESMOND
Abstract: In part, the disclosure relates to intravascular data collection systems and the software-based visualization and display of intravascular data relating to detected side branches and detected stent struts. Levels of stent malapposition can be defined using a user interface such as a slider, toggle, button, field, or other interface to specify how indicia are displayed relative to detected stent struts. In addition, the disclosure relates to methods to automatically provide a two or three-dimensional visualization suitable for assessing sidebranch and/or guide wire location during stenting. The method can use one or more a computed side branch location, a branch takeoff angle, one or more stent strut locations, and one or more lumen contours.
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公开(公告)号：CA2993458A1
公开(公告)日：2017-02-02
申请号：CA2993458
申请日：2016-07-25
Applicant: LIGHTLAB IMAGING INC
Inventor： GRIFFIN CHRISTOPHER E , AMBWANI SONAL , KAVETI SATISH
Abstract: In part, the disclosure relates to methods of guidewire detection in intravascular data sets such as scan lines, frames, images and combinations thereof. Methods of generating one or more indicia of a guidewire in a representation of blood vessel are also features of the disclosure. A carpet view is generated in one embodiment and regions of relatively higher contrast are detected as candidate guidewire regions. In one embodiment, the disclosure relates to selective removal of guidewire segments from a set of intravascular data and the display of a representation of a blood vessel via a user interface. Representations of a guidewire can be toggled on and off in one embodiment.
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公开(公告)号：CA2986227A1
公开(公告)日：2016-11-24
申请号：CA2986227
申请日：2016-05-17
Applicant: LIGHTLAB IMAGING INC
Inventor： AMBWANI SONAL , GRIFFIN CHRISTOPHER E , PETERSON JAMES G , KAVETI SATISH , FRIEDMAN JOEL M
Abstract: The disclosure relates, in part, to computer-based visualization of stent position within a blood vessel. A stent can be visualized using intravascular data and subsequently displayed as stent struts or portions of a stent as a part of a one or more graphic user interface(s) (GUI). In one embodiment, the method includes steps to distinguish stented region(s) from background noise using an amalgamation of angular stent strut information for a given neighborhood of frames. The GUI can include views of a blood vessel generated using distance measurements and demarcating the actual stented region(s), which provides visualization of the stented region. The disclosure also relates to display of intravascular diagnostic information such as indicators. An indicator can be generated and displayed with images generated using an intravascular data collection system. The indicators can include one or more viewable graphical elements suitable for indicating diagnostic information such as stent information.
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