US 12,171,573 B2
Blood vessel position display device and blood vessel position display method
Yuki Saito, Saitama (JP); Yoshiyuki Fukami, Ibaraki (JP); Hiroshi Kamiya, Kanagawa (JP); Osamu Arai, Tochigi (JP); Kazuhiko Sasagawa, Aomori (JP); Koichi Sagawa, Aomori (JP); Yasutaka Hanada, Aomori (JP); and Toshiro Ono, Kanagawa (JP)
Assigned to Kabushiki Kaisha Nihon Micronics, Musashino (JP)
Appl. No. 17/611,075
Filed by Kabushiki Kaisha Nihon Micronics, Tokyo (JP); and Hirosaki University, Aomori (JP)
PCT Filed Feb. 28, 2020, PCT No. PCT/JP2020/008317
§ 371(c)(1), (2) Date Nov. 12, 2021,
PCT Pub. No. WO2020/230407, PCT Pub. Date Nov. 19, 2020.
Claims priority of application No. 2019-091841 (JP), filed on May 15, 2019.
Prior Publication US 2022/0249016 A1, Aug. 11, 2022
Int. Cl. A61B 5/00 (2006.01); A61M 5/42 (2006.01)
CPC A61B 5/489 (2013.01) [A61B 5/0071 (2013.01); A61B 5/0077 (2013.01); A61M 5/427 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A blood vessel position display device comprising:
an image processing device configured to subject an image including blood vessel images for analysis of a target part to image processing to acquire blood vessel information including positions and shapes of blood vessels included in the target part by
reducing the width of blood vessel images to generate thinned blood vessel images;
creating approximate lines corresponding to the thinned blood vessel images;
obtaining a coefficient of determination for each approximate line; and
comparing the coefficient of determination for each approximate line with a decision value;
a selection device configured to choose a blood vessel as a conforming blood vessel in which a parameter obtained from the blood vessel information satisfies a specific condition based on the respective coefficient of determination;
an image generation device configured to generate a projection image including a chosen blood vessel image and a display line at least set to have a length corresponding to the conforming blood vessel; and
a projection device configured to cause a position of the display line to correspond to a position of the conforming blood vessel so as to project the projection image directly on to the target part, wherein the image generation device is configured to delete the chosen blood vessel image from the projection image.