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Status unknownNCT03881527NCBUpdated Mar 19, 2019

Nitinol Circular Blade

An interventional study of Aortic valve replacement using a nitinol blade and aortic valve replacement in Aortic Valve Stenosis, sponsored by Cliniques universitaires Saint-Luc- Université Catholique de Louvain. Status unknown at 1 site in Belgium. Open to participants aged 65 Years and older. Per ClinicalTrials.gov, last updated 2019-03-19.

Sponsored by Cliniques universitaires Saint-Luc- Université Catholique de Louvain · Not applicable, Interventional, and Treatment

The sponsor has not verified this record recently (last verified Mar 2019), so the status shown — last known as Recruiting — may be out of date.
Phase
Not applicable
Study type
Interventional
Enrollment
40
Allocation
Randomized
Ages
65 Years and older
Sex
All
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Study summary

The Nitinol Circular Blade (NCB) is indicated for use in patients with symptomatic aortic stenosis requiring aortic valve replacement, who are going to be operated by conventional sternotomy with native valve resection and replacement by a prosthetic aortic valve. The resection of the diseased leaflets will be performed by the NCB rather than conventional surgical blade.

Read the detailed description

The patient will be under general anesthesia. The sternum will be opened fully or partially. The patient will be prepared for cardiopulmonary bypass. A transversal aortotomy will be performed as usual. The aortic valve will be exposed for the resection. The NCB will be inserted under visual control from the aorta to the left ventricle. The collection chamber will be closed and the circular blade can be advanced forward to resect the diseased native aortic valve. Once the resection is completed the device will be retrieved carefully. Complementary fine cleaning of the aortic annulus can be done by the surgeon in order to prepare the annulus to receive the prosthetic valve. After implantation of the new valve classically the aortotomy will be closed. Standard weaning of cardiopulmonary bypass will be done and the operation will be safely completed. The aim of this blade is to evaluate the resection time, test the efficiency of a circular Nitinol blade during resection of the calcified native aortic leaflets. A careful examination of the resection edges, aortic annulus, mitral valve and all surrounding tissues will be done in order to validate the efficacy of this Nitinol Circular Blade.

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Conditions studied

  • Aortic Valve Stenosis

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03

In context

Aortic Valve Stenosis

985 studies on the registry are indexed under Aortic Valve Stenosis; 283 are open to participants now.

This study's planned enrollment of 40 is below the median of 120 across 525 interventional studies indexed under Aortic Valve Stenosis.

Browse Aortic Valve Stenosis studies →

Lead sponsor

Cliniques universitaires Saint-Luc- Université Catholique de Louvain is the lead sponsor of 342 studies on the registry; 61 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
65 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Severe aortic stenosis defined as one or more of the following by Doppler echocardiography: mean gradient >40 mmHg; max velocity >4 m/sec; aortic valve area \<=0.8 cm2.
  • Symptoms related to aortic valve disease, and NYHA Functional Class II or greater
  • Subject is indicated for aortic valve implantation with a biological prosthesis (tissue valve)
  • Age >= 65 years
  • Echocardiographically determined aortic annulus diameter >=24 mm and \<=30 mm in a long-axis view
  • Subject understands the implications of participating in the study and provides informed consent

Exclusion criteria

Exclusion Criteria:

  • Congenital unicuspid aortic valve
  • Severe eccentricity of calcification, defined as calcium deposits larger than 6 mm in diameter
  • Echocardiographic evidence of intracardiac mass, thrombus or vegetation
  • Left ventricular ejection fraction \<25% as determined by contrast ventriculography, or echocardiography or radionuclide angiography if contrast ventriculography not available
  • Hypertrophic obstructive cardiomyopathy
  • Subjects with life expectancy less than 12 months due to an underlying non-cardiac co-morbid disease
  • Known hypersensitivity or contraindication that cannot be adequately controlled with pre-medication to any study medication or material, such as contrast medium or Nitinol
  • Blood dyscrasia such as acute anemia, leucopenia, or thrombocytopenia; bleeding diathesis, or coagulopathy
  • Renal insufficiency assessed by creatinine >2.5 mg/dl and/or end stage renal disease requiring chronic dialysis
  • Poor lung function that in the investigator's opinion is prohibitive for thoracotomy
  • Active peptic ulcer or GI bleeding within 3 months from the planned index procedure
  • Cardiogenic shock, suspected cardiogenic shock, or hemodynamic instability requiring inotropic support or mechanical heart assistance
  • Peripheral vascular disease, including abdominal and thoracic aortic disease, that could pose a problem for eventual transarterial mechanical support (e.g. intraaortic balloon pump)
  • History of myocardial infarction in the last 6 weeks
  • History of TIA or CVA in the last 6 months
  • Subject refuses to have a blood transfusion
  • Subject is currently enrolled in another investigational device or drug trial that may influence the outcome of this trial
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Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
40 participants (estimated)

Study arms

  • Experimental
    Resection of the aortic valve leaflets with device

    Patients in which the aortic valve has been resected using the nitinol blade

    Device: Aortic valve replacement using a nitinol blade

  • Other
    Resection of the aortic valve leaflets in standard fashion

    Patients in which the aortic valve has been resected using a conventional blade or scissor

    Procedure: aortic valve replacement

Interventions

  • DeviceAortic valve replacement using a nitinol blade

    A circular nitinol blade will be inserted by to cut the aortic valve leaflets during conventional aortic valve replacement procedure

  • Procedureaortic valve replacement

    Aortic valve replacement in a standard fashion

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What researchers measure

Primary outcomes

  1. Procedural success of the resection

    Resection of the aortic valve leaflets by the circular nitinol blade

    Time frame: Hospital discharge : in average 1 week

Secondary outcomes

  1. Complication due to the use of the device

    Any complication related to the use of the nitinol blade

    Time frame: 1 year

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Study locations

1 of 1 sites recruiting
  • Parla ASTARCI
    Brussels, 1200, Belgium
    Recruiting
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References and documents

Publications

  • Astarci P, Glineur D, Kefer J, Renkin J, Vanoverschelde JL, El Khoury G. "Ring pledget": a new concept for secure apex closure during transapical aortic valve implantation. Innovations (Phila). 2010 Mar;5(2):136-7. doi: 10.1097/IMI.0b013e3181cbb364. PubMed 22437365 ↗
  • Astarci P, Glineur D, Kefer J, D'Hoore W, Renkin J, Vanoverschelde JL, El Khoury G, Grandin C. Magnetic resonance imaging evaluation of cerebral embolization during percutaneous aortic valve implantation: comparison of transfemoral and trans-apical approaches using Edwards Sapiens valve. Eur J Cardiothorac Surg. 2011 Aug;40(2):475-9. doi: 10.1016/j.ejcts.2010.11.070. Epub 2011 Jan 20. PubMed 21256045 ↗
  • Astarci P, Desiron Q, Glineur D, El Khoury G. Transapical explantation of an embolized transcatheter valve. Interact Cardiovasc Thorac Surg. 2011 Jul;13(1):1-2. doi: 10.1510/icvts.2011.267757. Epub 2011 Apr 11. PubMed 21486757 ↗
  • Astarci P, Glineur D, Elkhoury G, Raucent B. A novel device for endovascular native aortic valve resection for transapical transcatheter aortic valve implantation. Interact Cardiovasc Thorac Surg. 2012 Apr;14(4):378-80. doi: 10.1093/icvts/ivr125. Epub 2012 Jan 9. PubMed 22235001 ↗
  • Astarci P, Price J, Glineur D, D'Hoore W, Kefer J, Elkhoury G, Grandin C, Vanoverschelde JL. Cerebral embolization during percutaneous valve implantation does not occur during balloon inflation valvuloplasty: prospective diffusion-weighted brain MRI study. J Heart Valve Dis. 2013 Jan;22(1):79-84. PubMed 23610993 ↗
  • Astarci P, Glineur D, De Kerchove L, El Khoury G. Transcatheter valve used in a bailout technique during complicated open mitral valve surgery. Interact Cardiovasc Thorac Surg. 2013 Oct;17(4):745-7. doi: 10.1093/icvts/ivt249. Epub 2013 Jun 28. PubMed 23814136 ↗
  • Astarci P, Etienne PY, Raucent B, Bollen X, Tranduy K, Glineur D, Dekerchove L, Noirhomme P, Elkhoury G. Transcatheter resection of the native aortic valve prior to endovalve implantation - A rational approach to reduce TAVI-induced complications. Ann Cardiothorac Surg. 2012 Jul;1(2):224-30. doi: 10.3978/j.issn.2225-319X.2012.06.15. No abstract available. PubMed 23977499 ↗
  • Nuis RJ, Sinning JM, Rodes-Cabau J, Gotzmann M, van Garsse L, Kefer J, Bosmans J, Yong G, Dager AE, Revilla-Orodea A, Urena M, Nickenig G, Werner N, Maessen J, Astarci P, Perez S, Benitez LM, Amat-Santos IJ, Lopez J, Dumont E, van Mieghem N, van Gelder T, van Domburg RT, de Jaegere PP. Prevalence, factors associated with, and prognostic effects of preoperative anemia on short- and long-term mortality in patients undergoing transcatheter aortic valve implantation. Circ Cardiovasc Interv. 2013 Dec;6(6):625-34. doi: 10.1161/CIRCINTERVENTIONS.113.000409. Epub 2013 Nov 26. PubMed 24280965 ↗
  • Gauthier C, Astarci P, Baele P, Matta A, Kahn D, Kefer J, Momeni M. Mid-term survival after transcatheter aortic valve implantation: Results with respect to the anesthetic management and to the access route (transfemoral versus transapical). Ann Card Anaesth. 2015 Jul-Sep;18(3):343-51. doi: 10.4103/0971-9784.159804. PubMed 26139739 ↗
  • Navarra E, Mosala Nezhad Z, Bollen X, Gielen CE, Mastrobuoni S, De Kerchove L, Raucent B, Astarci P. Endovascular resection of the native aortic valve before transcatheter aortic valve implantation: state of the art and review. Eur J Cardiothorac Surg. 2016 Sep;50(3):406-10. doi: 10.1093/ejcts/ezw027. Epub 2016 Mar 31. PubMed 27032472 ↗

Individual participant data

Plan to share: Undecided

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 19, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT03881527
Lead sponsor
Cliniques universitaires Saint-Luc- Université Catholique de Louvain
Responsible party
Sponsor
First posted
Mar 19, 2019
Start date
Oct 2015
Primary completion
Dec 2019 (estimated)
Completion
Dec 2019 (estimated)
Last update
Mar 19, 2019

Study contacts

Parla ASTARCI, MD PhD
Contact
parla.astarci@uclouvain.be
+32 2 764 64 12
Emilano NAVARRA, MD
Contact
emilano.navarra@uclouvain.be
+32 764 61 07
Parla ASTARCI, Md PhD
principal investigator · Cliniques universiatires St Luc

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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