# Investigation of the ALLEGRA THV System With a New Delivery System in Patients With Aortic Stenosis or Failed Surgical Bioprosthesis

> **NCT05478161** · NA · COMPLETED · sponsor: **NVT GmbH** · enrollment: 137 (actual)

## Conditions studied

- Transcatheter Aortic Valve Implantation

## Interventions

- **DEVICE:** (ALLEGRA Transcatheter Heart Valve) TAVI in severe calcified aortic stenosis or in failed surgical aortic bioprosthesis

## Key facts

- **NCT ID:** NCT05478161
- **Lead sponsor:** NVT GmbH
- **Sponsor class:** INDUSTRY
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2023-01-24
- **Primary completion:** 2023-12-20
- **Final completion:** 2024-12-17
- **Target enrollment:** 137 (ACTUAL)
- **Last updated:** 2026-02-24


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT05478161

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT05478161, "Investigation of the ALLEGRA THV System With a New Delivery System in Patients With Aortic Stenosis or Failed Surgical Bioprosthesis". Retrieved via AI Analytics 2026-07-15 from https://api.ai-analytics.org/clinical/NCT05478161. Licensed CC0.

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