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Chinese Journal of Endourology(Electronic Edition) ›› 2024, Vol. 18 ›› Issue (06): 572-578. doi: 10.3877/cma.j.issn.1674-3253.2024.06.007

• Clinical Research • Previous Articles     Next Articles

Application of two percutaneous renal calyx puncture methods under real-time ultrasound guidance based on electromagnetic tracking and surgical navigation system

Bing Shi1,(), Zhi Zhang1, Jinhai Chen1, Wen Tang1   

  1. 1.Department of Urology,Shenzhen Longgang District Sixth People's Hospital,Guangdong 518117,China
  • Received:2023-08-09 Online:2024-12-01 Published:2024-11-26
  • Contact: Bing Shi

Abstract:

Objective

To introduce the application of real-time ultrasound-guided the outof-plane and the in-plane percutaneous renal calyx puncture techniques based on electromagnetic tracking and surgical navigation system.

Methods

35 cases of renal calculi undergoing percutaneous nephrolithotomy in Shenzhen Longgang District Sixth People's Hospital from September 2016 to July 2018 were analyzed. There were 25 males and 15 females,the median age of them was 44(29-70) years. BMI was 24.5(18.5-32.5) kg/m2. Percutaneous nephrolithotomy was conducted by the SonixGPSTM ultrasound equipment with electromagnetic tracking and navigation system produced by Ultrasonix of Canada. Under the guidance of electromagnetic tracking puncture needle,three-dimensional intraoperative navigation and real-time ultrasound guidance,two percutaneous calyceal puncture methods were used to establish the surgical channel by puncture the skin outside or inside the ultrasonic-image plane of ultrasonic transducer.According the different puncture methods,the cases were divided into two groups,20 cases in the outof-plane puncture group and 15 cases in the in-plane puncture group.

Results

The median successful time of puncture in the out-of-plane puncture group and the in-plane puncture group was 4.0(3.0-9.0)minutes and 6.0(3.0-18.0) minutes,respectively,and the difference was significant difference (P<0.05).The puncture success rates were 95.0%(19/20) and 93.3%(14/15),with no significance (P>0.05). Among the 35 cases,29 cases was achieved with the precise puncture effect of one-time puncture attempt and only 1 case had surgical complications with the highest grade of Clavien-Dindo classification Ⅲa.

Conclusion

The real-time ultrasound-guided the out-of-plane puncture method based on electromagnetic tracking and surgical navigation system has shorter puncture time and easier operation. When the intercostal space is not wide enough,the in-plane puncture method can still be used for precise puncture.

Key words: Renal stone, Percutaneous nephrostomy, Ultrasound, Electromagnetic tracking, Intraoperative navigation, Puncture

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