{
  "abstract": "Introduction\n\nUreteral stents significantly impair health-related quality of life. Advances in stent material, particularly in polyurethane compositions, may mitigate adverse effects. This study evaluated ex vivo changes in the elasticity of ureteral stents made from a novel thermoplastic polyurethane composite (HybridPRO Technology by Urotech) compared to a control stent.Material and methods\n\nIn this prospective controlled ex vivo observational study, 97 patients undergoing ureteroscopy received one of two types of tethered 7 Fr, 28 cm ureteral stents. Eleven patients underwent bilateral procedures, yielding a total of 108 stents (54 per group). Group 1 received a polyurethane stent with HybridPRO Technology and group 2 received a polyurethane stent without HybridPRO Technology. After removal, stents were measured at the patient's bedside using a hanging apparatus with a predetermined 400 g load. In vitro (room temperature) and ex vivo elongations were recorded, and the net difference was calculated.Results\n\nIn vitro measurements showed a median elongation of 4 mm (IQR: 4-4) in group 1 vs 2 mm (IQR: 2-2) in group 2. Ex vivo, group 1 elongated significantly more (median, 12 mm; IQR: 11-13) compared to group 2 (median: 5 mm; IQR: 4-6; p <0.001). The net difference was larger in group 1 (median: 10 mm; IQR, 9-11) compared to group 2 (median: 3 mm; IQR: 2-4; p <0.001).Conclusions\n\nUreteral stents incorporating HybridPRO Technology demonstrated significantly greater elongation under standardized load after use compared to a control stent. These findings indicate material changes ex vivo; however, the clinical implications regarding comfort or quality of life remain to be determined in future studies.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Urology, LMU Klinikum, Munich, Germany."
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 12,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Marina Hoffmann"
    },
    {
      "affs": [
        0
      ],
      "name": "Benedikt Ebner"
    },
    {
      "affs": [
        0
      ],
      "name": "Nikolaos Pyrgidis"
    },
    {
      "affs": [
        0
      ],
      "name": "Iulia Blajan"
    },
    {
      "affs": [
        0
      ],
      "name": "Troya Georgieva"
    },
    {
      "affs": [
        0
      ],
      "name": "Marc Kidess"
    },
    {
      "affs": [
        0
      ],
      "name": "Moritz Happe"
    },
    {
      "affs": [
        0
      ],
      "name": "Yannic Volz"
    },
    {
      "affs": [
        0
      ],
      "name": "Lennert Eismann"
    },
    {
      "affs": [
        0
      ],
      "name": "Maria Apfelbeck"
    },
    {
      "affs": [
        0
      ],
      "name": "Christian G Stief"
    },
    {
      "affs": [
        0
      ],
      "name": "Michael Chaloupka"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/b06bh4awvmt1s.bib",
  "cited_by": 0,
  "doi": "10.5173/ceju.2025.0216",
  "fulltext_url": "https://europepmc.org/articles/PMC13681890",
  "id": "b06bh4awvmt1s",
  "issns": [
    "2080-4806",
    "2080-4873"
  ],
  "landing_url": "https://europepmc.org/article/MED/42904079",
  "language": "eng",
  "licence": "CC-BY-NC-SA",
  "licence_label": "CC BY-NC-SA",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc-sa/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2729|Ureteral procedures and complications"
    ]
  ],
  "openalex": "W7204940490",
  "pdf_url": "https://europepmc.org/articles/PMC13681890?pdf=render",
  "pmcid": "PMC13681890",
  "pmid": "42904079",
  "published": "2026-06-12",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/b06bh4awvmt1s.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:19:59Z",
      "native_id": "MED:42904079",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42904079"
    }
  ],
  "subjects": [
    {
      "field": "medicine",
      "origin": "openalex:2729|Ureteral procedures and complications",
      "subfield": "reproductive-child"
    }
  ],
  "title": "Prospective controlled ex vivo observational study on changes in elasticity of ureteral stents following clinical use.",
  "title_text": "Prospective controlled ex vivo observational study on changes in elasticity of ureteral stents following clinical use.",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:19:59Z",
  "url": "https://research.draconitic.com/paper/b06bh4awvmt1s",
  "venue": "Central European journal of urology",
  "versions": []
}