Enhanced vision system for laparoscopic surgery

Tamadazte, Brahim; Fiard, G.; Long, Jean-Alexandre; Cinquin, Philippe; Voros, Nikolaos S.

doi:10.1109/embc.2013.6610845

Cited by 9 publications

(10 citation statements)

References 6 publications

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“…-(ii) Systems where the traditional endoscope is replaced by distributed vision systems (numerous individual cameras) [16] or by two or three stereoscopy systems [18], [17]. In the latter, the cameras that compose the distributed system are independent from each another, requiring additional incisions for the insertion of the vision system.…”

Section: Lab Prototypesmentioning

confidence: 99%

Multi-view vision system for laparoscopy surgery

et al. 2014

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Section: Lab Prototypesmentioning

confidence: 99%

Multi-view vision system for laparoscopy surgery

et al. 2014

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“…In recent years, several advanced laparoscopic or endoscopic technologies have been developed to address those limitations. For example, the compact ultra-high-definition endoscope [4] can reduce the instrument conflict while remaining high resolution, the zoom laparoscope [5,6] or zoom camera head [Stryker 1488 HD] can effectively change the optical magnification, thus change the field coverage and resolution; variable viewing direction laparoscopes [7,8] can change their view by varying its viewing direction optically or mechanically. None of these existing solutions, however, are able to simultaneously acquire both wide-angle images and high-resolution images.…”

Section: Introductionmentioning

confidence: 99%

Continuously zoom imaging probe for the multi-resolution foveated laparoscope

Qin¹,

Hua²

2016

Biomed. Opt. Express

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In modern minimally invasive surgeries (MIS), standard laparoscopes suffer from the tradeoff between the spatial resolution and field of view (FOV). The inability of simultaneously acquiring high-resolution images for accurate operation and wide-angle overviews for situational awareness limits the efficiency and outcome of the MIS. A dual view multi-resolution foveated laparoscope (MRFL) which can simultaneously provide the surgeon with a high-resolution view as well as a wide-angle overview was proposed and demonstrated to have great potential for improving the MIS. Although experiment results demonstrated the high-magnification probe has an adequate magnification for viewing surgical details, the dual-view MRFL is limited to two fixed levels of magnifications. A fine adjustment of the magnification is highly desired for obtaining high resolution images with desired field coverage. In this paper, a high magnification probe with continuous zooming capability without any mechanical moving parts is demonstrated. By taking the advantages of two electrically tunable lenses, one for optical zoom and the other for image focus compensation, the optical magnification of the high-magnification probe varies from 2 × to 3 × compared with that of the wide-angle probe, while the focused object position stays the same as the wide-angle probe. The optical design and the tunable lens analysis are presented, followed by prototype demonstration.

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“…This limitation raises a series of problems, such as situational awareness issue, ergonomic conflict, and instruments collision [2,3]. Although the zoom camera head [www.stryker.com] and other new laparoscope technologies [4,5] have been developed to improve the laparoscopic surgery by changing the optical magnification or viewing directions, they still cannot capture both a wide-angle view and a high-resolution view simultaneously.…”

Section: Introductionmentioning

confidence: 99%

Optical design and system engineering of a multiresolution foveated laparoscope

Qin

Hua

2016

Appl. Opt.

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The trade-off between the spatial resolution and field of view is one major limitation of state-of-the-art laparoscopes. In order to address this limitation, we demonstrated a multiresolution foveated laparoscope (MRFL) which is capable of simultaneously capturing both a wide-angle overview for situational awareness and a high-resolution zoomed-in view for accurate surgical operation. In this paper, we focus on presenting the optical design and system engineering process for developing the MRFL prototype. More specifically, the first-order specifications and properties of the optical system are discussed, followed by a detailed discussion on the optical design strategy and procedures of each subsystem. The optical performance of the final system, including diffraction efficiency, tolerance analysis, stray light and ghost image, is fully analyzed. Finally, the prototype assembly process and the final prototype are demonstrated.

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Enhanced vision system for laparoscopic surgery

Cited by 9 publications

References 6 publications

Multi-view vision system for laparoscopy surgery

Multi-view vision system for laparoscopy surgery

Continuously zoom imaging probe for the multi-resolution foveated laparoscope

Optical design and system engineering of a multiresolution foveated laparoscope

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