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Valleylab Hand-Switching LigaSure XTD (Patent Pending) Design Project

[+] Author Affiliations
Dylan Kingsley, John Twomey

University of Colorado at Boulder, Boulder, CO

Paper No. SBC2007-176745, pp. 765-766; 2 pages
  • ASME 2007 Summer Bioengineering Conference
  • ASME 2007 Summer Bioengineering Conference
  • Keystone, Colorado, USA, June 20–24, 2007
  • Conference Sponsors: Bioengineering Division
  • ISBN: 0-7918-4798-5
  • Copyright © 2007 by ASME


Valleylab’s LigaSure vessel sealing instruments used in open surgical operations are currently operated via a foot-activated switch. Valleylab funded and mentored a senior design project at the University of Colorado at Boulder to redesign the electrosurgical device to include hand-switching. In comparison to hand-switching, a foot switch adds to the device setup complexity and increases the physical demand on the surgeon. Additional drawbacks of a foot switch include risk of inadvertent activation and need to look away from the surgical area in order to accurately activate the switch. Valleylab determined the need to redesign the LigaSure XTD instrument, shown in Figure 1, to use a hand-activated switch in order to provide surgeons with greater ease and precision of use.

Copyright © 2007 by ASME
Topics: Design , Patents



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