A robotic wide-angle view endoscope using wedge prisms

Kobayashi, Etsuko; Sakuma, Ichiro; Konishi, K.; Hashizume, Makoto; Dohi, Takeyoshi

doi:10.1007/s00464-003-8230-x

Cited by 20 publications

(12 citation statements)

References 7 publications

(6 reference statements)

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“…Therefore, much research is done to increase the field-of-view to generate panoramic images of human cavities [5,6]. Moving wedge prisms can be used to direct the light path to various peripheral locations [7]. Scanning fibers have been shown to have high-resolution in catheterscopes [8,9].…”

Section: Related Workmentioning

confidence: 99%

Spectral encoding enhances visual flexibility of surgical endoscopes

et al. 2014

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Endoscope cameras play an important and growing role as a diagnostic and surgical tool. The endoscope camera is usually used to provide a view of the scene straight ahead of the instrument to the operator. As is common in many remotely operated systems, the limited field of view and the inability to pan the camera make it challenging to gain a situational awareness comparable to an operator with direct access to the scene. We present a spectral multiplexing technique for endoscopes that allows for overlay of the existing forward view with additional views at different angles to increase the effective field of view of the device. Our goal is to provide peripheral vision while minimally affecting the design and forward image quality of existing systems.

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Section: Related Workmentioning

confidence: 99%

Spectral encoding enhances visual flexibility of surgical endoscopes

et al. 2014

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“…To solve these problems and to achieve the continuous view movement, wide moving view and easy controllability, we have developed the laparoscope with flexible view point using wedge prisms [5] [6]. In our first prototype, we put two wedge prisms at the tip of the laparoscope and change the view by rotating the prisms.…”

Section: Introductionmentioning

confidence: 99%

Development and fundamental evaluation of flexible viewpoint laparoscope using a oblique viewing laparoscope

Fukushima

Kobayashi

Ando

et al. 2013

2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

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We have developed a new type of laparoscope with flexible view point. This system can move the view without moving laparoscope itself. To achieve the wide range of view moving, we used a commercial 30° oblique-viewing laparoscope and special lens. The system control the view by rotating the oblique-viewing laparoscope and a sleeve which is attached to the special lens by motors independently. From the evaluation experiments, we confirmed the laparoscope which has 70° view angle could move the view ±60°. In the image quality evaluation experiment, degradation of the image quality was small. The positioning accuracy was 2.4±1.7 mm repeatability was 0.48 mm which lead to precise view control. The system achieve the safe and smooth manipulation of the laparoscopic view.

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“…We have developed a new type of robotic wide-angle view endoscope that does not require rotation or bending of the endoscope to move the field of view [1]. It allows the surgeon to make an extensive range of observations in a small space, and it is safe because it avoids the possibility of accidentally hitting organs.…”

Section: Introductionmentioning

confidence: 99%