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Updated: May 14, 2026

Retzius-Sparing Robot-Assisted Radical Prostatectomy
Published on: May 19, 2022
Robot-Assisted Radical Prostatectomy Using the KangDuo-SR-2000: A Prospective, Multicenter, Single-Arm Clinical Study
Zihao Tao1,2,3,4, Zheng Zhang1,2,3,4,5, Ziqi Wang6
1Department of Urology, Peking University First Hospital, Beijing, China.
The new KangDuo-Surgical-Robot-2000 (KD-SR-2000) shows promise for robotic assisted radical prostatectomy (RARP). This system is feasible, safe, and effective in early trials for prostate cancer surgery.
Area of Science:
- Urology
- Surgical Robotics
- Oncology
Background:
- Robotic assisted radical prostatectomy (RARP) is a standard treatment for prostate cancer.
- Evaluating novel robotic systems is crucial for advancing surgical techniques.
- The KangDuo-Surgical-Robot-2000 (KD-SR-2000) is a newly developed system for RARP.
Purpose of the Study:
- To assess the feasibility, safety, and effectiveness of the KD-SR-2000 in RARP.
- To evaluate perioperative outcomes, oncologic control, and patient continence.
- To measure the ergonomic workload associated with the KD-SR-2000 system.
Main Methods:
- A prospective, multicenter, single-arm trial involving 30 patients with T1-3 prostate cancer.
- Patients underwent RARP using the KD-SR-2000.
- Outcomes assessed included perioperative results, oncologic control, urinary continence, and NASA-TLX scores.
Main Results:
- All 30 RARP surgeries were completed successfully without conversion or severe complications (Clavien-Dindo grade ≥ III).
- Positive surgical margins occurred in 16.7% of patients, and 3.3% had PSA persistence at 6 weeks.
- Urinary continence was achieved in 66.7% of patients at 4 weeks post-catheter removal, with a median NASA-TLX score of 22.5.
Conclusions:
- The KD-SR-2000 robotic system demonstrates preliminary feasibility, safety, and effectiveness for RARP.
- The system is a viable option for prostate cancer surgery, with acceptable early oncologic and functional outcomes.
- Further studies are warranted to confirm long-term results and compare with existing robotic platforms.
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