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Related Experiment Video

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Revo-i vs Da Vinci in Robotic Partial Nephrectomy: First Human Comparison.

Ji Eun Heo1, Hyun Ho Han1, Won Sik Jang1

  • 1Department of Urology, Urological Science Institute, Yonsei University College of Medicine, Seoul, Republic of Korea.

Journal of Endourology
|May 20, 2026
PubMed
Summary
This summary is machine-generated.

The Revo-i robot offers a cost-effective alternative for robot-assisted partial nephrectomy (RAPN), showing comparable outcomes to the da Vinci Xi system for low- and intermediate-complexity tumors. However, higher complexity cases with Revo-i experienced longer warm ischemia times.

Keywords:
Revo-ipartial nephrectomyrobotic surgerytrifectawarm ischemia time

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Area of Science:

  • Urology
  • Surgical Robotics
  • Oncology

Background:

  • Robot-assisted partial nephrectomy (RAPN) is dominated by the da Vinci system, but its high cost limits accessibility.
  • The Revo-i surgical robot presents a more affordable alternative, though its clinical application in partial nephrectomy (PN) is less established.
  • This study is the first to clinically compare perioperative outcomes between the Revo-i and da Vinci Xi systems for RAPN.

Purpose of the Study:

  • To compare the perioperative outcomes of RAPN using the Revo-i versus the da Vinci Xi surgical system.
  • To evaluate the efficacy and safety of the Revo-i system as a cost-effective alternative for partial nephrectomy.

Main Methods:

  • A retrospective study of 124 patients undergoing RAPN between September 2023 and October 2025.
  • Patients were treated with either the da Vinci Xi (n=79) or Revo-i (n=45) system, selected via shared decision-making.
  • Tumor complexity was assessed using the R.E.N.A.L. nephrometry score; the primary outcome was trifecta achievement (negative margins, WIT <25 min, no complications).

Main Results:

  • Overall trifecta achievement rates were similar (Revo-i: 66.7% vs. da Vinci Xi: 57.0%, p=0.342).
  • For low-complexity tumors, Revo-i demonstrated shorter warm ischemia time (WIT) due to a higher rate of zero-ischemia cases.
  • For high-complexity tumors, Revo-i showed significantly longer WIT (50 vs. 33 minutes, p=0.005) and no trifecta achievements.

Conclusions:

  • The Revo-i system shows comparable perioperative outcomes to the da Vinci Xi for low- and intermediate-complexity partial nephrectomies.
  • Caution is advised when using the Revo-i system for high-complexity renal tumors due to prolonged warm ischemia times.
  • Revo-i offers a viable, cost-effective option for specific RAPN patient populations.