Abstract:
BACKGROUND AND PURPOSE:In laparoscopy, the term "mirror imaging" is used to describe a visual illusion resulting in paradoxical movements when a surgeon is positioned opposite the laparoscope. Mirror imaging is a common problem, creating difficulty in ergonomics and task performance. We introduce the use of a video image converter box (IC box) to overcome mirror imaging. The IC box converts the analog signal to a digital one, performs image rotation or inversion or both, and then reproduces an analog signal for monitor viewing. A laboratory study evaluated whether the IC box could improve performance during laparoscopic tasks. MATERIALS AND METHODS:Fourteen laparoscopic surgeons (10 novice and 4 experienced) completed three laparoscopic tasks while positioned opposite the camera and experiencing mirror imaging: (1). suture cutting; (2). multiple transfers of a piece of foam; and (3). multiple transfers of a pinto bean. Participants were timed during each test both with and without the use of the IC box. RESULTS:All surgeons completed each task faster using the IC box (P < 0.015). On average, use of the IC box allowed subjects to complete assignments in less than one-third the time needed without the IC box. In Task 3, requiring multiple transfers of a small bean, all participants using the IC box completed the task. However, without the box, only 1 of 14 participants accomplished the goal in the allotted time. CONCLUSION:Use of the IC box eliminates mirror imaging and improves performance and efficiency during laparoscopic tasks. The box would significantly benefit surgeons positioned opposite the camera during laparoscopic surgery.
journal_name
J Endouroljournal_title
Journal of endourologyauthors
Johnston WK 3rd,Low RK,Das Sdoi
10.1089/089277903322145521subject
Has Abstractpub_date
2003-06-01 00:00:00pages
327-31issue
5eissn
0892-7790issn
1557-900Xjournal_volume
17pub_type
杂志文章abstract::It seems likely, and indeed inevitable, that medical device usage will continue its rapid increase over the next 10 to 20 years and beyond. For surgeons, these new inventions will come in many forms but should take into account biocompatibility and resistance to encrustations and to microorganisms. This review focuses...
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