A new laparoscope manipulator with an optical zoom

  • Etsuko Kobayashi
  • Ken Masamun
  • Takeyoshi Dohi
  • Daijo Hashimoto
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1496)


This report describes a new type of laparoscope manipulator with an optical zoom. The manipulator was designed with regard to its safety in medical settings. It is based on a five-bar linkage mechanism. Back and forth movements of a laparoscope are achieved by an optical zoom. By using the five-bar linkage mechanism with the optical zoom, the manipulator need never interfere with the surgeon or the patient. However, the problem of the quality of the image created by the zoom lens remained. To address this problem, we used a short laparoscope instead of an ordinary laparoscope. In this way, the manipulator achieved a high quality laparoscope image with a sufficient degree of safety


Laparoscopic Surgery Outer Tube Zoom Lens Laparoscope Manipulator Mechanical Safety 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1998

Authors and Affiliations

  • Etsuko Kobayashi
    • 1
  • Ken Masamun
    • 1
  • Takeyoshi Dohi
    • 1
  • Daijo Hashimoto
    • 1
    • 2
  1. 1.Department of Precision Machinery Engineering, Graduates School & Faculty of EngineeringThe University of TokyoTokyoJapan
  2. 2.Tokyo Metropolitan Police HospitalJapan

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