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公开(公告)号：US12201271B2
公开(公告)日：2025-01-21
申请号：US18310517
申请日：2023-05-01
Applicant: Stryker Corporation
Inventor： William Huei Liang Chang , Bryan Larson , John Shen , Benjamin Feingold , Ajay Ramesh
IPC: G02B23/24 , A61B1/00 , A61B1/04 , A61B1/045 , A61B1/06 , G06T7/00 , H04N23/56 , H04N23/74 , H04N25/531 , H04N23/50
Abstract: A method of imaging tissue of a subject using an electronic rolling shutter imager includes sequentially resetting rows of pixels of the rolling shutter imager from a first row to a last row for a first amount of time; illuminating the tissue of the subject with illumination light over an illumination period that begins once the last row of the rolling shutter imager has been reset and lasts for at least the first amount of time; accumulating charge at the rows of pixels over at least the illumination period based on light that is received from the tissue of the subject while the tissue of the subject is illuminated with the illumination light; sequentially reading charge accumulated at the rows of pixels from the first row to the last row once the illumination period has ended; and generating an image frame from the rows of pixels.
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公开(公告)号：US10690904B2
公开(公告)日：2020-06-23
申请号：US15458137
申请日：2017-03-14
Applicant: Stryker Corporation
Inventor： Gregory G. Otterstrom , Ajay Ramesh , Hannah Lawrence , Candice Pack , Richard I. Palmisano
Abstract: A light source for medical or surgical procedures is provided which can provide at least three different imaging modes. Modular light engines are also provided which may be interchangeable within a light source system for increased imaging capability. Methods of using such light sources and modular light engines are also provided.
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公开(公告)号：US12144489B2
公开(公告)日：2024-11-19
申请号：US17052157
申请日：2019-05-02
Applicant: Stryker Corporation
Inventor： Levey Trac Tran , Chien Mien Pang , Ajay Ramesh , Rohit Subramanian , Pankaj Sharma
Abstract: A surgical camera system comprising: a camera head including a housing; an image sensor within the housing; and the housing including a liquid lens therein for focusing an image received in the housing prior to transmission of the image to the image sensor, and a fixed solid lens adjacent the liquid lens.
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公开(公告)号：US11638517B2
公开(公告)日：2023-05-02
申请号：US16745154
申请日：2020-01-16
Applicant: Stryker Corporation
Inventor： William Huei Liang Chang , Bryan Larson , John Shen , Benjamin Feingold , Ajay Ramesh
IPC: H04N5/374 , A61B1/045 , A61B1/04 , A61B1/06 , G06T7/00 , H04N5/353 , H04N5/225 , H04N5/235 , A61B1/00
Abstract: A method of imaging tissue of a subject using an electronic rolling shutter imager includes sequentially resetting rows of pixels of the rolling shutter imager from a first row to a last row, sequentially reading charge accumulated at the rows of pixels from the first row to the last row, wherein the first row is read after resetting the last row, illuminating the tissue of the subject with illumination light for an illumination period that lasts longer than a vertical blanking period, wherein the vertical blanking period is the period from the resetting of the last row to the reading of the first row, and generating an image frame from the readings of charge accumulated at the rows of pixels, wherein at least one reading of charge accumulated at a row of pixels is removed or replaced to generate the image frame.
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公开(公告)号：US12201270B2
公开(公告)日：2025-01-21
申请号：US18310515
申请日：2023-05-01
Applicant: Stryker Corporation
Inventor： William Huei Liang Chang , Bryan Larson , John Shen , Benjamin Feingold , Ajay Ramesh
IPC: H04N5/335 , A61B1/00 , A61B1/04 , A61B1/045 , A61B1/06 , G06T7/00 , H04N23/56 , H04N23/74 , H04N25/531 , H04N23/50
Abstract: A system includes an illumination source and an imaging apparatus that includes an electronic rolling shutter imager and is configured for sequentially resetting rows of pixels of the rolling shutter imager from a first row to a last row, sequentially reading charge accumulated at the rows of pixels from the first row to the last row, wherein the first row is read after resetting the last row, controlling the illumination source to illuminate the tissue of the subject with illumination light for an illumination period that lasts longer than a vertical blanking period, wherein the vertical blanking period is the period from the resetting of the last row to the reading of the first row, and generating an image frame from the readings of charge accumulated at the rows of pixels, wherein at least one reading of charge accumulated at a row of pixels is removed or replaced.
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Patent Agency Ranking
公开(公告)号：US11169370B2
公开(公告)日：2021-11-09
申请号：US16908648
申请日：2020-06-22
Applicant: Stryker Corporation
Inventor： Gregory G. Otterstrom , Ajay Ramesh , Hannah Lawrence , Candice Pack , Richard I. Palmisano
Abstract: A method for generating light from a medical light source includes emitting light in a visible wavelength spectrum from a first light of the medical light source, emitting light in a first infrared spectrum from a first light emitter of a second light, redirecting light emitted from the first light emitter by at least one optical element of the second light, emitting light in a second infrared spectrum from a second light emitter of the second light, and redirecting the light emitted from the second light emitter by the at least one optical element of the second light.
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公开(公告)号：US10687697B2
公开(公告)日：2020-06-23
申请号：US14775347
申请日：2014-03-14
Applicant: Stryker Corporation
Inventor： Ajay Ramesh , Perry Hu , Harman Singh , Chien Mien Pang , Vasudev Nambakam
IPC: A61B1/06 , A61B1/07 , A61B1/045 , A61B1/00 , A61B1/04 , H04N9/73 , G01N21/64 , H04N5/33 , H04N5/225
Abstract: An endoscopic system having a light source that can operate in two modes is provided. The first mode provides a white light to an endoscope to transmit the light to a surgical site or other object, the reflection of which can be received by the endoscope and for the process. The second mode of the light source provides infrared excitation light and light in the blue and green wavelength spectra to an endoscope to transmit the light to an object such as a surgical site. The blue and green reflected light, as well as light from excitation markers, which is an infrared light at a different wavelength than the excitation infrared light, is received by the endoscope and further processed.
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公开(公告)号：US12232706B2
公开(公告)日：2025-02-25
申请号：US16908640
申请日：2020-06-22
Applicant: Stryker Corporation
Inventor： Ajay Ramesh , Perry Hu , Harman Singh , Chien Mien Pang , Vasudev Nambakam
IPC: A61B1/06 , A61B1/00 , A61B1/04 , A61B1/045 , A61B1/07 , G01N21/64 , H04N9/73 , H04N23/11 , H05B45/22 , H04N23/50
Abstract: A light source includes a first LED in communication with a first DAC; a second LED in communication with a second DAC; a third LED in communication with a third DAC; a color sensor capable of sensing light in the visible light spectrum; and one or more processors configured for: receiving color intensity values from the color sensor, determining whether the color intensity values are balanced to achieve white light, adjusting the current to the second DAC and third DAC until the color intensity levels are balanced to achieve white light at a combined intensity level, setting a new red LED current value, a new green LED current value, and a new blue LED current value to adjust the combined intensity level toward a target intensity level, and repeating the setting step until the target intensity level is achieved.
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公开(公告)号：US12178389B2
公开(公告)日：2024-12-31
申请号：US17192777
申请日：2021-03-04
Applicant: Stryker Corporation
Inventor： Ajay Ramesh , Chien Mien Pang
Abstract: Systems and methods for detecting, characterizing, and addressing the type of endoscope that is connected to the camera/light source based on the image size taken using that endoscope are disclosed. Once the type of endoscope is determined, the systems and methods can adjust at least one parameter of the camera/light source based on the determination of the type of endoscope that is being used.
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公开(公告)号：US12130420B2
公开(公告)日：2024-10-29
申请号：US18329563
申请日：2023-06-05
Applicant: Stryker Corporation
Inventor： Gregory G. Otterstrom , Ajay Ramesh , Hannah Lawrence , Candice Pack , Richard I. Palmisano
IPC: G02B23/24 , A61B1/00 , A61B1/06 , G02B27/10 , G02B27/14 , H04N23/56 , A61B90/00 , G02B23/26 , H04N23/50
CPC classification number: G02B23/2461 , A61B1/00105 , A61B1/00126 , A61B1/0638 , A61B1/0646 , A61B1/0669 , A61B1/0684 , G02B27/1006 , G02B27/141 , H04N23/56 , A61B2090/3937 , G02B23/26 , H04N23/555
Abstract: A light source includes a first LED to provide light of a first light wavelength spectrum along a first light path; a second LED to provide light of a second light wavelength spectrum along a second light path; a dichroic filter for passing light emitted from at least one of the first LED and the second LED and reflecting light emitted from at least one of the first LED and the second LED; an optical filter movable between a first position in which the optical filter receives light from the first light path and a second position of which the optical filter does not receive light from the first light path; a light output; a controller which is capable of switching the light source between a first mode for providing a first light to the light output and a second mode for providing a second light to the light output.
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