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Transvaginal cholecystectomy without laparoscopic support using prototype flexible endoscopic instruments in a porcine model

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Abstract

Background

Transvaginal cholecystectomy with laparoscopic assistance has been performed safely in humans. The next goal was to develop a natural orifice transluminal endoscopic surgery (NOTES) technique to perform cholecystectomy without laparoscopic instruments using one flexible endoscope and flexible accessories. The aim of the study was to test the feasibility of the procedure in a survival porcine model.

Methods

Cholecystectomies were attempted in five 88–130-lb. pigs with a planned 2-week survival. Prototype flexible instruments (NOTES Toolbox, Ethicon Endo-Surgery, Inc.) were used to aid in access, dissection, and removal of the gallbladder via the transvaginal route.

Results

Cholecystectomy could be completed without abdominal incision using prototype instruments in four out of five pigs. The cystic duct could be exposed with a flexible hook knife and clips applied. The steerable trocar improved stability and the precision of the dissection. The critical view was established in all five pigs. Dissection of the gallbladder off the liver bed was imprecise resulting in gallbladder perforation in all pigs and liver hemorrhage in two. At necropsy, all clips on the cystic duct were secure and no bile leak, bowel injury, or adhesions were present.

Conclusions

NOTES cholecystectomy without laparoscopic support is feasible but challenging using prototype flexible endoscopic devices. A prototype clip applier was effective in controlling the cystic duct. Further improvements in instrument design to ensure precision and safety are needed before flexible devices should be used for pure NOTES procedures in humans.

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Acknowledgment

The authors acknowledge the support of Ethicon Endo-Surgery for their support of this project.

Disclosures

Dr. Miedema and Dr. Thaler have received research funding from Satiety Inc., Boston Scientific Inc., Atrium Inc., Ethicon Endo-Surgery Inc., Olympus America Inc., and Power Medical Inc. Dr. Satgunam and Dr. Wang have no conflicts of interest or financial ties to disclose.

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Authors and Affiliations

  1. Department of Surgery, University of Missouri, One Hospital Drive, Columbia, MO, 65212, USA

    Shean Satgunam, Brent Miedema, Susan Whang & Klaus Thaler

Authors
  1. Shean Satgunam
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  2. Brent Miedema
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  3. Susan Whang
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  4. Klaus Thaler
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Corresponding author

Correspondence to Brent Miedema.

Additional information

Disclaimers

The NOTES Toolbox devices used in this study are not yet approved by the FDA for use in humans. The Tissue Apposition System (TAS) is indicated for endoscopic placement of suture(s) and approximation of soft tissue.

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Satgunam, S., Miedema, B., Whang, S. et al. Transvaginal cholecystectomy without laparoscopic support using prototype flexible endoscopic instruments in a porcine model. Surg Endosc 26, 2331–2338 (2012). https://doi.org/10.1007/s00464-012-2185-8

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  • DOI: https://doi.org/10.1007/s00464-012-2185-8

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