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Early Clinical Results with the
Valiant Mona LSA Branch Stent-Graft
Frank R. Arko III, MD Professor of Cardiovascular Surgery
Director, Endovascular Surgery Co-Director, Aortic Institute Carolinas Medical Center
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Disclosure
Speaker name: Frank R. Arko III, MD
.................................................................................
I have the following potential conflicts of interest to report:
Consulting
Employment in industry
Stockholder of a healthcare company
Owner of a healthcare company
Other(s)
I do not have any potential conflict of interest
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Valiant Mona LSA: Device Overview
Main Stent Graft (MSG) • Flexible cuff “volcano” for BSG
• Diameters: 30 – 46mm
• Nominal length: 15cm
Branch Stent Graft (BSG) • Nitinol helical stent with high radial
force
• PE material with proximal flare
• Diameters: 10, 12, 14mm
• Length: 40mm
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Valiant Mona LSA: Delivery System
Delivery System • Two wire system
• Main/primary aortic tracking wire
• Pre-cannulated LSA cuff wire
• Tip capture for precise MSG delivery
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Carolinas Medical Center
Valiant Mona LSA Clinical Experience
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Trial Patient 1: 81 y/o female, DTA 5.7cm
• Measurements
• Proximal Seal zone
• Between LSA and LCC: 35.7mm
• Beginning of Proximal Neck: 37.5mm
• Distal Seal zone: 41.6mm
• LSA: 8.0 - 9.0mm
• Planned Treatment with:
• 46mm MSG (15cm length)
• 10mm BSG (4cm length)
• 46mm Distal Extension to diaphragm
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Pre-Op 3D CT
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Pre and Post Angios
Distal device placed first
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1 Month Follow Up
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1 Month Post-Op
6 Month Post-Op
1 Year Post-Op
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1 Year Post-Op 3D CT
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Emergent Patient: 84 y/o female, TAA in Arch
• Considerable arch thrombus
• Conservatively managed for 2 years post-diagnosis
• Presented symptomatically with worsening upper back/scapular pain
• CTA indicated rapidly expanding TAA with asymmetric expansion of anterior wall
• Bovine Arch with patent LSA
• Marginal access (7.0 – 7.4 mm)
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3D Reconstruction
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Diameter – 40mm Length – 13.5mm
Proximal Target Landing Zone
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Deployment of 46 x 150 Valiant Mona LSA
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Positioning of 10x40 LSA Branch Graft
Ballooning of 10x40 LSA Branch Graft
Placement of LSA Branch
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Final Angiogram
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Post-op Patency and Exclusion
LSA Branch Patent
Complete Exclusion
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Post-Op 3-D Fly-Through
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Valiant Mona LSA Early Feasibility Trial
Acute Clinical Outcomes
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Valiant Mona LSA Early Feasibility Trial
Eric E. Roselli, MD Cleveland Clinic
Cleveland, OH, USA
Frank R. Arko III, MD Carolinas Medical Center
Charlotte, NC, USA
Matt Thompson, MD St. George’s Institute
London, UK
– Prospective, non-randomized, 3-center, pre-market clinical study
– 9 patients (7 US, 2 OUS)
– Goal:
• Validate procedure
• Assess acute safety and performance
• Collect imaging data to augment current understanding
Principle Investigators:
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Baseline Demographics and Clinical Characteristics
• 9 patients in total, 7 US and 2 UK • Mean Age: 73 years (63-87)
• 67% female
• Mean Maximum Aneurysm Diameter: 53.7 mm (42-76)
• Mean LSA Diameter: Ostium – 10.3mm (8-13) , Distal – 9.6mm (8-10)
Fusiform4 Saccula
r 5
Aneurysm Morphology Comorbidities
Hypertension Hyperlipidemia Arrhythmia* COPD Cancer TIA
8 7
5 4 4
2 *All subjects presented with Cardiac Disease
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Procedural Characteristics
• 100% successful delivery and deployment of MSGs and BSGs
• Duration of procedure: 125 min. (60-227) • General anesthesia used in all 9 cases
Surgical 7
Perc 2
Main Stent Graft Access
Brachial 7
Axillary 2
Branch Stent Graft Access
• 7 patients received distal Valiant device to extend coverage • Mean hospital procedure stay: 5.9 days (5-8)
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Primary Endpoints through 30-day Visit • Treatment Success1: 100%
• Technical Success: 100%
• Composite Safety Endpoints
• Aneurysm-Related Mortality: 0 patients
• Stroke: 3 patients
• Minor, non-disabling neurological events
• All subjects regained full functional status
• Paraplegia: 0 patients
• Left Arm/Hand Ischemia: 0 patients 1 Treatment success is defined as technical success, which is the successful delivery and deployment of the stent graft and successful exclusion of the aneurysm while maintaining patency of the MSG and BSG.
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Key Secondary Endpoints through 30-day Visit
• Secondary Endovascular Procedures: 0 patients
• Conversion to Surgical Procedure: 0 patients
• Surgical Revasc of the LSA: 0 patients
• Paraparesis: 0 patients
• Rupture: 0 patients
• Stent Graft Integrity: 100%
• Stent Graft Patency: 100%
• No technical issues with Main or Branch stent grafts
• Endoleaks at 30-day visit: 1 Type II and 1 Undetermined
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Summary of Principle Findings through 30-days
• Primary effectiveness objective achieved at 30 days
• 100% Treatment Success, 100% Technical Success
• No deaths, major strokes, paraplegia or left arm/hand ischemia
• No evidence device migration, infolding or fractures
• 100% stent graft integrity and patency
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Conclusions • The Valiant Mona LSA stent graft system has performed as
planned in the short term
• Patients will continue to be followed through 5 years
• Expansion of Feasibility Trial planned for 2015:
• 7 sites
• Up to 24 additional patients
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Thank You
Frank R. Arko III, MD Professor of Cardiovascular Surgery
Director, Endovascular Surgery Co-Director, Aortic Institute Carolinas Medical Center