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Introduction <p>The aim of the current study is the comparison between the Swiss LithoClast<sup>®</sup> Trilogy Max Handpiece and the Swiss Lithoclast<sup>®</sup> Trilogy Handpiece in the boundaries of a standardized in vitro and in vivo experimental set-up.</p> Materials and methods <p>For the in vitro setup, a PVC tube placed within a plastic box filled with saline solution was used. Five soft and five hard artificial stones were created and the lithotripters were evaluated until complete stone clearance. For the in vivo part of the study, four female pigs were used. After the achievement of percutaneous access, five soft and five hard artificial stones were placed in the pelvicalyceal system. Lithotripsy was conducted. A dynamometer was used to evaluate the force needed during the procedure, while the stone clearance time was recorded.</p> Results <p>Twenty in vitro and 20 in vivo trials were completed. The Swiss LithoClast<sup>®</sup> Trilogy Handpiece weights 1200gr and the Swiss LithoClast<sup>®</sup> Trilogy Max Handpiece weights 900gr. In the in vitro setting, the mean SCT(stone clearance time) of the Swiss LithoClast<sup>®</sup> Trilogy Handpiece was 17.8±2.3&#xa0;s and 7.4±1.1&#xa0;s for hard and soft stones, respectively. The mean SCT of the Swiss LithoClast<sup>®</sup> Trilogy Max Handpiece was 16.8±2.9&#xa0;s for hard and 7±1.2&#xa0;s for soft stones. In the in vivo setting, the mean SCT of the Swiss LithoClast<sup>®</sup> Trilogy Handpiece was 36.2±4.4&#xa0;s for the hard and 16.2±1.4&#xa0;s for the soft stones. As for the Swiss LithoClast<sup>®</sup> Trilogy Max Handpiece, the mean SCT for the hard and soft stones was 32.4±5.8&#xa0;s and 14.8±1.1&#xa0;s, respectively. The mean applied efforts by the surgeon were 36.8±2.5&#xa0;N for the Swiss LithoClast<sup>®</sup> Trilogy Handpiece and 25.9±3.7&#xa0;N (<i>p</i> &lt; 0.01) for the Swiss LithoClast<sup>®</sup> Trilogy Max Handpiece.</p> Conclusion <p>LithoClast<sup>®</sup> Trilogy and LithoClast<sup>®</sup> Trilogy Max are equally efficient in terms of lithotripsy. The reduced weight of the Max handpiece demands less effort from the surgeon regarding manipulation and navigation inside the pelvicalyceal system.</p>

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In vivo and in vitro evaluation of the Swiss LithoClast® Trilogy Max Handpiece

  • 期刊论文

  • 发表日期：

    2025年8月26日

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  • Angelis Peteinaris,
  • Vasileios Tatanis,
  • Solon Faitatziadis,
  • Theodoros Spinos,
  • Aggelos Samaras,
  • Paraskevi Katsakiori,
  • Christodoulos Chatzigrigoriadis,
  • Theofanis Vrettos,
  • Evangelos Liatsikos,
  • Panagiotis Kallidonis

摘要

Introduction

The aim of the current study is the comparison between the Swiss LithoClast® Trilogy Max Handpiece and the Swiss Lithoclast® Trilogy Handpiece in the boundaries of a standardized in vitro and in vivo experimental set-up.

Materials and methods

For the in vitro setup, a PVC tube placed within a plastic box filled with saline solution was used. Five soft and five hard artificial stones were created and the lithotripters were evaluated until complete stone clearance. For the in vivo part of the study, four female pigs were used. After the achievement of percutaneous access, five soft and five hard artificial stones were placed in the pelvicalyceal system. Lithotripsy was conducted. A dynamometer was used to evaluate the force needed during the procedure, while the stone clearance time was recorded.

Results

Twenty in vitro and 20 in vivo trials were completed. The Swiss LithoClast® Trilogy Handpiece weights 1200gr and the Swiss LithoClast® Trilogy Max Handpiece weights 900gr. In the in vitro setting, the mean SCT(stone clearance time) of the Swiss LithoClast® Trilogy Handpiece was 17.8±2.3 s and 7.4±1.1 s for hard and soft stones, respectively. The mean SCT of the Swiss LithoClast® Trilogy Max Handpiece was 16.8±2.9 s for hard and 7±1.2 s for soft stones. In the in vivo setting, the mean SCT of the Swiss LithoClast® Trilogy Handpiece was 36.2±4.4 s for the hard and 16.2±1.4 s for the soft stones. As for the Swiss LithoClast® Trilogy Max Handpiece, the mean SCT for the hard and soft stones was 32.4±5.8 s and 14.8±1.1 s, respectively. The mean applied efforts by the surgeon were 36.8±2.5 N for the Swiss LithoClast® Trilogy Handpiece and 25.9±3.7 N (p < 0.01) for the Swiss LithoClast® Trilogy Max Handpiece.

Conclusion

LithoClast® Trilogy and LithoClast® Trilogy Max are equally efficient in terms of lithotripsy. The reduced weight of the Max handpiece demands less effort from the surgeon regarding manipulation and navigation inside the pelvicalyceal system.