Medical device
A technology of medical equipment and setting department, which is applied in the fields of medical science, surgery, diagnosis, etc., and can solve problems such as shortening of exposure time, darkening of camera images, and reduction of visual recognition of fluorescent areas
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no. 1 Embodiment approach ）
[0024] figure 1 It is a block diagram showing the medical device according to the first embodiment of the present invention.
[0025] First, refer to Figure 2 ~ Figure 6 The method of this embodiment for changing the frame rate will be described. figure 2 It is an explanatory diagram showing the state of fluorescence observation.
[0026] The endoscope insertion part 63 is inserted into the lumen such as the large intestine mucosa 61 . An unshown imaging unit is provided on the endoscope insertion unit 63, and figure 2 In , the observation range of the imaging unit is shown by a dotted line. While making the endoscope insertion part 63 to figure 2 Fluorescence observation of the large intestine mucosa 61 in the lumen is performed while moving in the direction of the arrow. In addition, in a part of the large intestine mucosa 61 , there is a marker accumulation region 62 where the fluorescent agent accumulates.
[0027] image 3 is shown by figure 2 An explanatory...
no. 2 Embodiment approach ）
[0106] Figure 9 It is a timing chart for explaining the second embodiment of the present invention. Figure 9 (a1)~(f1) and Figure 9 (a2)~(f2) respectively correspond to Figure 7 (a2) ~ (f2).
[0107] The hardware configuration of this embodiment is the same as that of the first embodiment, and the difference between this embodiment and the first embodiment lies in the illumination control of the LED driver 32 and the readout control of the imaging device driver 48 .
[0108] In this embodiment, if Figure 9 As shown in (a1) to (f1) and (a2) to (f2), the LED driver 32 delays from the end of the reading period of one screen to the predetermined time before the end of the reading period of the next screen. During the period, excitation light or reference light is emitted from the LED light source 31 . That is, the subject is irradiated with excitation light and illumination light during substantially all of the exposure period of each row of the CMOS sensor 23b.
[0109...
no. 3 Embodiment approach ）
[0117] Figure 10 It is a block diagram showing the third embodiment of the present invention. exist Figure 10 in, right with figure 1 The same structural elements are marked with the same reference numerals and descriptions are omitted.
[0118] This embodiment differs from the above-described embodiments in that a motion detection unit 91 is provided instead of the frame rate selection switch 53 . In each of the above-described embodiments, the operator selects any one of a plurality of frame rates by operating the frame rate selection switch 53 . On the other hand, in this embodiment, motion of the imaging unit is detected, and any one of a plurality of frame rates is selected based on the detected motion.
[0119] A motion detection unit 91 for detecting the motions of the white light observation imaging unit 22 and the fluorescence observation imaging unit 23 is disposed near the fluorescence observation imaging unit 23 at the tip of the endoscope 2 . The motion det...
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