Using our 8K ultra-high definition (UHD, 7680 x 4320 pixels) video technology with 16-times resolution compared with the conventional HD endoscopic/microscopic camera (1920 x 1080 pixels), not only surgeons but also all medical staff in the operating room could observe small suture thread, capillaries, lymphatic vessels, thin membrane structures and important nerve fibers which have been hard to see clearly. We believe that our 8K-UHD surgical devices are very likely to lead to major changes in the future of medical practice, not only in typical endoscopic/microscopic surgery but also in novel surgical fields.
We have developed an 8K4K liquid-crystal display (LCD) with diagonal size of 55 inch with the backplane based on an amorphous silicon (a-Si) technology. The 8K4K-LCD has high frame frequency at 120 Hz, which is enabled by a unique technology to compensate the charging voltage of pixels. The achievement of a high resolution of 8K4K including high frame frequency of 120 Hz with a-Si backplanes is ground-breaking for LCDs. Furthermore, a backlight system with laser diode as light source expands the color gamut dramatically. This backlight system enables covering 99% of color space recommended in BT.2020. What is more, the 8K4K-LCD has evolved into a three-dimensional (3-D) display device by attaching a 3-D polarizing film. The vertical viewing angle of the 8K-3D LCD prototype is 8.6 deg at its optimal viewing position set to 1.2 m.
An 8K4K-LCD with the diagonal size of 55 inch has been developed. The backplane is based on an amorphous silicon (a-Si) technology and can operate at 120Hz, which is achieved by developing a technology to compensate the charging voltage of pixels. The realization of a high resolution of 8K4K and a high frame frequency of 120Hz is the world first for LCDs with a-Si backplanes. Moreover, a backlight system with laser light sources expands the color gamut. The newly developed LCD covers 99% of color space defined in BT.2020.
Additionally, we have established three dimensional 8K4K technology. A 3D polarization filter is attached on the 55-in. 8K4K LCD. The vertical viewing angle of 8K-3D LCD prototype is 8.6 degrees at its optimal viewing position set to 1.2m.
We have started clinical application of 8K ultra-high definition (UHD; 7680 x 4320 pixels) technology to a rigid endoscopic system for advanced minimal invasive surgery. Our 8K UHD endoscopic system consists of an 8K UHD camera head with a lens adapter, rigid endoscope, xenon light source, 8K UHD monitor, and 8K UHD recorder. The first model of an 8K UHD camera head was developed based on a broadcasting camera in 2014, and the weight was 2.2 kg. The second model of an 8K UHD camera head was our original achievement in 2016, and the weight was 450 g. In 2017, we finally succeeded in developing the world’s smallest 8K UHD camera head of 370 g weight for mass production. We were able to achieve clinical success using the first model in two cases of cholecystectomy in 2014. Furthermore, after downsizing and weight saving of the 8K UHD camera head, we performed four cholecystectomies with higher maneuverability in the abdominal cavity using the second model in 2017. These experimental and clinical studies revealed the engineering and clinical feasibility of the 8K UHD endoscope. The 8K UHD endoscope promises new possibilities for intricate procedures including anastomoses of thin blood vessels and identification of thin nerves, as well as more confident surgical resections of various types of cancer tissues. We believe that our 8K UHD endoscopic imaging is very likely to lead to major changes in the future of medical practice, not only in typical endoscopic surgery but also in new heads-up surgery.
Conference Committee Involvement (5)
Ultra-High-Definition Imaging Systems V
22 January 2022 | San Francisco, California, United States
Ultra-High-Definition Imaging Systems IV
6 March 2021 | Online Only, California, United States
Ultra-High-Definition Imaging Systems III
3 February 2020 | San Francisco, California, United States
Ultra-High-Definition Imaging Systems II
2 February 2019 | San Francisco, California, United States
Ultra-High-Definition Imaging Systems
31 January 2018 | San Francisco, California, United States