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Management of Complex Airway Stenoses With Dedicated Tailored Stents Wrought by 3D Computer-assisted Conception (DASCAS)

21. juli 2026 oppdatert av: University Hospital, Toulouse

Management of complex airway stenoses with dedicated tailored stents wrought by 3D computer-assisted conception

Dedicated Airway Stents for Central Airway Stenoses

DASCAS

Toulouse University Hospital is the sponsor of this research.

This research will be conducted with the support of AnatomikModeling and ADERSPOT

  • Background: Tracheobronchial stent are devices designed to manage central airway stenoses of various origins. Their shape and sizes are however not suitable for stenosis of complex anatomy.
  • Purpose: The investigators propose to test the feasibility and safety of treating complex airway stenoses with dedicated tailored stents wrought by 3D computer-assisted conception

Abstract: Central airway obstruction is currently managed with non-personalized stents, which are usually efficient but lead to severe and potentially lethal complications in 10% of cases (stent migration, obstructive granuloma, perforation, hemoptysis). These stents seem particularly unsuited for anatomically complex stenosis.

Dedicated airway stents (wrought and tailored by 3D computer-assisted conception based on 3D chest CT-scan), by fitting perfectly tracheal or bronchial anatomy, should dramatically improve the tolerance and safety of such prostheses.

This first feasibility study, dedicated to patients suffering from anatomically complex stenosis will test the safety of treating patients with these new approach. It should lead to larger studies evaluating these new types of stents in larger indications.

After 3D computer-assisted modelization of airways, a virtual prosthesis and its shape are designed and the shape of the stent is wrought by 3D-machining by AnatomikModeling®. The stent is then build and sterilized by Sebbin® and inserted during rigid bronchoscopy on the same terms as pre-existing models.

Close follow up is then conducted, including clinical evaluation after one week, three and six months; spirometry at one week and 6 months and chest CT-scan at one week.

Studieoversikt

Status

Fullført

Forhold

Intervensjon / Behandling

Detaljert beskrivelse

Study design: Prospective monocentric feasibility study

Arm number or label and arm type: Only one experimental arm

Interventions:

After signature of a informed consent

Collection of clinical data (age, sex, etiology, site and mechanism of the stenosis, previous treatments dyspnea, quality of life (VQ11 questionnaire))

Chest CT-scan without contrast under continuous positive pressure

Spirometry (peak flow, FEV1)

Computer-assisted modelization of the shape of the prosthesis using 3D reconstruction of CT-scan

Machining of the shape in Ertacetal® (AnatomikModeling®)

Fabrication and sterilization of the stent in silicon (Sebbin®)

Insertion of the stent under rigid bronchoscopy and general anesthesia

Clinical follow-up at one week, 3 months and 6 months

Chest CT-scan without contrast at 1 week, spirometry at 1 week and 6 months

Number of subjects : 10 patients

Statistical analysis:

For the primary outcome, percentages of procedures conducted without complication at 1 week, 3 months, and 6 months and their confidence interval at 95% and incidences at 1 week, 3 months and 6 months for each complication will be calculated.

For secondary outcomes:

  • Percentages of procedures conducted with improvement of dyspnea (improvement of at least one point of NYHA score) at 1 week, 3 months, and 6 months and their confidence interval at 95% will be calculated.
  • Percentages of procedures conducted with improvement of quality of life (improvement of at least 10% of VQ11 score) at 1 week, 3 months, and 6 months and their confidence interval at 95% will be calculated.
  • Percentages of procedures conducted with improvement of functional parameters (improvement of at least 20% of DEP or FEV1) at 1 week and 6 months and their confidence interval at 95% will be calculated.
  • Percentage of procedures conducted with radiologic congruence of the stent at 1 week and its confidence interval at 95% will be calculated.

Studietype

Intervensjonell

Registrering (Faktiske)

10

Fase

  • Ikke aktuelt

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiesteder

  • Frankrike
    • CHU de Toulouse
      • Toulouse, CHU de Toulouse, Frankrike, 31059
        • University Hospital toulouse

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

18 år og eldre (Voksen, Eldre voksen)

Tar imot friske frivillige

Nei

Beskrivelse

Inclusion Criteria:

  • Age > 18 years
  • Signature of the informed consent form
  • Patient with a complex upper airway stenosis .
  • Symptomatic stenosis ( Dyspnea > NYHA II , cough, PEF < 50%)
  • Stenosis whose complex anatomy does not allow the establishment of a currently available stent on the market: the assessment of the experts ( consensus decision between 3 bronchoscopistes of interventional endoscopy service) or after failure of one or several models.
  • Affiliated with a social security scheme

Exclusion Criteria:

  • Indication of implementation of emergency aid : signs of acute respiratory distress , PEF < 20 % predicted , SpO2 oxygen saturation <90 % on room air
  • Contraindication to rigid bronchoscopy (severe coagulation disorders not correct )
  • Patient under legal protection system
  • Pregnancy
  • Breastfeeding

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Primært formål: Behandling
  • Tildeling: N/A
  • Intervensjonsmodell: Enkeltgruppeoppdrag
  • Masking: Ingen (Open Label)

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Eksperimentell: new 3D device
dedicated tailored stents wrought by 3D computer-assisted conception
Enhet: new 3D device
dedicated tailored stents wrought by 3D computer-assisted conception

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Change of percentage of procedures conducted without complications at 1 week , 3 months and 6 months
Tidsramme: Change of percentage of procedures conducted without complications at 1 week, 3 months and 6 months
percentages of procedures conducted without complication at 1 week, 3 months and 6 month and their confidence interval at 95% and incidences at 1 week, 3 months and 6 months for each complication will be calculated.
Change of percentage of procedures conducted without complications at 1 week, 3 months and 6 months

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

University Hospital, Toulouse

Etterforskere

  • Hovedetterforsker: Nicolas Guibert, Dr, University Hospital, Toulouse

Publikasjoner og nyttige lenker

Den som er ansvarlig for å legge inn informasjon om studien leverer frivillig disse publikasjonene. Disse kan handle om alt relatert til studiet.

Generelle publikasjoner

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Faktiske)

1. september 2016

Primær fullføring (Faktiske)

1. desember 2019

Studiet fullført (Faktiske)

1. november 2020

Datoer for studieregistrering

Først innsendt

19. juli 2016

Først innsendt som oppfylte QC-kriteriene

30. august 2016

Først lagt ut (Antatt)

5. september 2016

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

22. juli 2026

Siste oppdatering sendt inn som oppfylte QC-kriteriene

21. juli 2026

Sist bekreftet

1. juli 2026

Mer informasjon

Begreper knyttet til denne studien

Ytterligere relevante MeSH-vilkår

Andre studie-ID-numre

  • RC31/15/7860

Plan for individuelle deltakerdata (IPD)

Planlegger du å dele individuelle deltakerdata (IPD)?

NEI

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