METHODS FOR CONTROLLING TEMPERATURE IN ULTRASONIC DEVICE

    公开(公告)号:US20190274717A1

    公开(公告)日:2019-09-12

    申请号:US16144335

    申请日:2018-09-27

    申请人: Ethicon LLC

    IPC分类号: A61B17/32

    摘要: A generator, ultrasonic device, and method for controlling a temperature of an ultrasonic blade are disclosed. A control circuit coupled to a memory determines an actual resonant frequency of an ultrasonic electromechanical system comprising an ultrasonic transducer coupled to an ultrasonic blade by an ultrasonic waveguide. The actual resonant frequency is correlated to an actual temperature of the ultrasonic blade. The control circuit retrieves from the memory a reference resonant frequency of the ultrasonic electromechanical system. The reference resonant frequency is correlated to a reference temperature of the ultrasonic blade. The control circuit then infers the temperature of the ultrasonic blade based on the difference between the actual resonant frequency and the reference resonant frequency. The control circuit controls the temperature of the ultrasonic blade based on the inferred temperature

    Use of laser light and red-green-blue coloration to determine properties of back scattered light

    公开(公告)号:US11100631B2

    公开(公告)日:2021-08-24

    申请号:US15940704

    申请日:2018-03-29

    申请人: Ethicon LLC

    摘要: A surgical image acquisition system includes multiple illumination sources, each source emitting light at a specified wavelength, a light sensor to receive light reflected from a tissue sample illuminated by each of the illumination sources, and a computing system. The computer system may receive data from the light sensor when the tissue sample is illuminated by the illumination sources, determine a depth of a structure within the tissue sample, and calculate visualization data regarding the structure and its depth within the tissue. The visualization data may have a format for use by a display system. The structure may include vascular tissue. The illumination sources may include red, green, blue, infrared, ultraviolet, and white light sources. The structure depth may be determined by a spectroscopy method or a Doppler shift method. The system may include a controller and computer enabled instructions to accomplish the above.

    USE OF LASER LIGHT AND RED-GREEN-BLUE COLORATION TO DETERMINE PROPERTIES OF BACK SCATTERED LIGHT

    公开(公告)号:US20190206050A1

    公开(公告)日:2019-07-04

    申请号:US15940704

    申请日:2018-03-29

    申请人: Ethicon LLC

    IPC分类号: G06T7/00 H04N9/64

    摘要: A surgical image acquisition system includes multiple illumination sources, each source emitting light at a specified wavelength, a light sensor to receive light reflected from a tissue sample illuminated by each of the illumination sources, and a computing system. The computer system may receive data from the light sensor when the tissue sample is illuminated by the illumination sources, determine a depth of a structure within the tissue sample, and calculate visualization data regarding the structure and its depth within the tissue. The visualization data may have a format for use by a display system. The structure may include vascular tissue. The illumination sources may include red, green, blue, infrared, ultraviolet, and white light sources. The structure depth may be determined by a spectroscopy method or a Doppler shift method. The system may include a controller and computer enabled instructions to accomplish the above.