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    • 42. 发明申请
    • AN ENDOSCOPE
    • WO2022248592A1
    • 2022-12-01
    • PCT/EP2022/064283
    • 2022-05-25
    • AMBU A/S
    • SØRENSEN, Morten
    • A61B1/00A61B1/05A61B1/06A61B1/07
    • An endoscope comprising a proximal handle and a distal tip with at least one transparent front window. The distal tip comprises an electronic image capture device having an essentially rectangular defining a vertical and horizontal imaging direction. A lightguide (13) is associated with the at least one light source arranged in alignment with a centre axis (A-A) of said lightguide (13). The lightguide (13) comprises a proximal end (14) and a distal end (16) and a circumferential surface (18) extending between said proximal end (14) and said distal end (16). The circumferential surface (18) is configured to provide total internal reflection of light emitted from the light source, and said circumferential surface defines cross-sections of said lightguide (13), wherein said cross-sections comprise four corners (15) arranged around said centre axis (A-A) so as to define four edges (21) subdividing the circumferential surface (18) into four side surfaces (18). The edges (21) extend with a predetermined angle with respect to the centre axis (A-A) and said side surfaces (18) have a curvature where the angle of the surface (18) with respect to the centre axis increases from the edges (21) towards the middle of the side surface.