the mimics-2 ide study: interim update on biomimics 3d in us, … · biomimics 3d in us, japan, and...
TRANSCRIPT
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Prof. Thomas ZellerDepartment AngiologyUniversity Heart-Center Freiburg - Bad KrozingenBad Krozingen , Germany
The MIMICS-2 IDE study: interim update on
BioMimics 3D in US, Japan, and Europe
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Faculty Disclosure
For the 12 months preceding this presentation, I disclose the following types of financial relationships:
• Honoraria received from: Abbott Vascular, Bard Peripheral Vascular, Veryan, Biotronik, Boston Scientific Corp., Cook Medical, Cordis Corp., Gore & Associates, Medtronic, Spectranetics, Straub Medical, TriReme
• Consulted for: Abbott Vascular, Bard Peripheral Vascular, Boston Scientific Corp., Cook Medical, Gore & Associates, Medtronic, Spectranetics
• Research, clinical trial, or drug study funds received from:480 biomedical, Bard Peripheral Vascular, Veryan, Biotronik, Cook Medical, Cordis Corp., Gore & Associates, Abbott Vascular, Medtronic, Spectranetics, Terumo, TriReme, Volcano
Thomas Zeller, MD
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Biomimicry: Platform for Stent Design Innovation
Vascular system uses
non-planar curvature to promote
swirling blood flow that protects
vessels by increasing wall shear
on endothelial cells and promotes
diffusion of Oxygen to the
arterial wall
Protective
Suboptimal
Pathogenic
1.5
0.5
7.0
Wall Shear Stress (Pascal)
1.
1. Malek et al JAMA 1999
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What’s Unique about the BioMimics 3D stent?
SHORT co-linear connectors LONG co-linear connectors
LifeStentSPIRAL connectors
Unique BioMimics 3D design:SHORT + LONG connectors SPIRAL configuration
Zilver PTXComplete SE
… and 3D helical centreline in Nitinol shape memory.
Imparts non-planar curvatureto stented segment
Improves biomechanical performance 2
Promotes swirling flow to increasewall shear stress 1
1. Caro et al., 2013
2. Data held on file at Veryan Medical
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MIMICS Clinical Program
Feasibility StudyN=101 site
MIMICS
RandomizedControlledvs. straight stent
N=508 sites24-month follow-up 1
CE Mark
MIMICS-2
Prospective, multinational evaluation of safety and primary patency at 12 months
N=27147 sites36-monthfollow-up
IDE Study (US, Japan, Germany)
MIMICS-3D
Prospective, observational evaluation within real-world clinical population
N=500+25 sites36-monthfollow-up
EuropeanPost-market Surveillance Registry
MIMICS et seq
Investigator-initiated and retrospective studies evaluating safety, efficacy and performance
Targets of interest:- popliteal- calcified lesions- DCB combination
Post-market & Geographic
1. Zeller et al Circulation CI 2016
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Mimics Study: Lesion Characteristics
BioMimics 3D (N=50)
Control stent(N=26)
P value
Lesion Location SFA 92% 77% 0.08SFA/Popliteal 6% 12% 0.41
Popliteal 2% 12% 0.11TASC II A 42% 42% 1.00
B 56% 58% 1.00C 2% 0% 1.00
Lesion Length mm 66 ± 29 63 ± 28 0.66Stent Length mm 99 ± 30 88 ± 22 0.08Occlusion Total 44% 46% 1.00Calcification Moderate to Severe 52% 58% 0.81
Comparison with Other Studies
Superb Zilver PTX Durability II
Mimics IN.PACT LEVANT 2
Total Occlusions 25% 30% 48% 44% 25.8% 20.6%
Calcium (severe) 44% 37% 43% 42% 8% 17.6%
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ControlBioMimics3D
2.25
2.00
1.75
1.50
1.25
1.00
0.75
0.50
Wall
Shear
Str
ess
(Pa)
In the Mimics randomized clinical trial, compared to Control stents, BioMimics 3D stents generated:
• 55% more swirling flow* (P= 0.017)
• 18% more wall shear stress (P= 0.054)
(n=42)(n=23)
* Swirling flow = Steady state adaptation of helical flow defined by Gallo J. Biomech. 45, (2012), 2398-2404
ControlBioMimics3D
0.00004
0.00003
0.00002
0.00001
0.00000
Sw
irlin
g F
low
(m
^4
s^
-2)
Swirling Flow & Wall Shear Stress
Data on file at Veryan Medical
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Kaplan Meier Estimate of Survival from Loss of Patency
PSVR >2.0, or >50% diameter stenosis, or adjudicated, clinically-driven TLR
Mimics Study: Primary Patency
Log rank test
P = 0.05
80%72%
71%
55%
Months 246 12
0
20
40
60
80
100
__ BioMimics 3D
__ Control Stent
Cu
mu
lative
Su
rviv
al
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24 Months12
0
20
40
60
80
100
Cu
mu
lative
Su
rviv
al
Log rank
test
P = 0.03
Kaplan Meier Estimate of Survival from CDTLR (Landmark Analysis)
(Clinically-driven TLR determined through Event Adjudication)
Mimics Study: Durable Benefit
__ BioMimics 3D
__ Control Stent
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Mimics Study: Curvature Confirmed
Non-planar curvature in stented segment
Swirling flow patterns revealed by CFD modelling
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Mimics Study: Real-World CurvatureIf lesion is heavily calcified, is curvature of the stented segment attenuated?
p = 0.14
% P
ate
ncy
Curv
atu
re m
m-1
240 6 12 months
20
40
60
80
100
0
Calcification
___none – mild
___moderate - severe
log rank test
p = 0.73
• Curvature and freedom from loss of primary patency are independent of calcification
Data on file at Veryan Medical
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MIMICS-2 IDE StudyEvaluation of Safety and Effectiveness of BioMimics 3D in Femoropopliteal Intervention
• Primary Endpoints:
• Safety: composite of death, any major amputation performed on the index limb or
clinically-driven target lesion revascularisation (CDTLR) through 30 days
• Effectiveness: 12-month Primary Patency
• Follow-up: 3 years
• IDE Study extended to Japan through FDA/PMDA Harmonization by Doing Initiative
• 47 investigational sites: 35 US; 6 Germany; 6 Japan
Study Principal Investigators
Professor Timothy M. Sullivan, M.D Minneapolis, MN, USA
Professor Thomas Zeller, MD Bad Krozingen, Germany
Professor Masato Nakamura, MD Tokyo, Japan
• Independent core labs: ultrasound; angiography; clinical event adjudication
Enrolment Completed Oct-2016
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N= 271 Subjects
Age Mean years ± SD (N) 68.4 ± 9.5 (271/271)Gender Male / Female 180 (66.4%) / 91 (33.6%)Risk Factors Diabetes Mellitus 45.4% (123/271)
Hypertension 90.0% (244/271)Hypercholesterolemia 81.9% (222/271)
Smoker Current / Former 80.8% (219/271)Cardiac History Coronary artery disease 46.1% (125/271)Previous Intervention None in target vessel 98.9% (268/271)Rutherford Category
1 0% (0/271)2 26.9% (73/271)3 67.5% (183/271)4 5.2% (14/271)5 0.4% (1/271)
Ankle Brachial Index Mean ± SD (N) 0.69 ± 0.20 (266/271)
MIMICS-2 IDE StudyBaseline Patient Demographics
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MIMICS-2 IDE StudyBaseline Angiographic Characteristics
N= 271 Subjects
Reference Vessel Diameter2 Mean ± SD (mm) 5.18 ± 0.9Lesion Type1 De novo 100% (271/271)Lesion Location2 Prox SFA 9.0% (24/265)
Mid SFA 48.7% (129/265)Distal SFA 40.0% (106/265)
Prox Popliteal 2.3% (6/265)Lesion Length2 Mean ± SD (mm) 80.7 ± 38.2 (265/271)Occlusion2 Total 29.5% (80/271)Calcification2 None - Mild 53.6% (142/265)
Moderate - Severe 46.4% (123/265)Patent Infrapopliteal Vessels2 0 0% (0/252)
1 27.8% (70/252)2 52.0% (131/252)3 20.2% (51/252)
1. Per investigator
2. Core Lab
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MIMICS-2 IDE StudyIndex Procedure Data
N= 271 Subjects
BioMimics 3D Stents placed1 # Stents / N 305 / 271# Subjects with 1 stent 87.5% (237/271)# Subjects with 2 stents 12.5% (34/271)# Subjects with 3 stents 0% (0/271)
Stented Segment Length2 Mean ± SD (mm) 112.5 ± 36.4 (265/271)Diameter Stenosis2 Pre-stent % ± SD 78.8 ± 22.1 (265/271)
Post-stent % ± SD 12.8 ± 8.0 (265/271)Dissections2 No Dissection 97.7% (259/265)
Type A-C 2.3% (6/265)Type D-F 0% (0/265)
Device Success 100% (271/271)Technical Success2 100% (265/265)
Device Success: Successful delivery of System; placement of stent and retrieval of System
Technical Success: Core Lab determination of ≤50% residual diameter stenosis (in-stent) at
conclusion of index procedure
1. Per investigator
2. Core Lab
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MIMICS-3D RegistryProspective, multicentre observational study to evaluate BioMimics 3D in peripheral arterial disease
• Primary Endpoints:
• Safety: composite of death, any major amputation performed on the index limb or
clinically-driven target lesion revascularisation (CDTLR) through 30 days
• Effectiveness: 12-month Primary Patency
• Follow-up: 3 years
• Post-market surveillance study
• 25 investigational sites in Europe
Study Principal Investigator
Michael Lichtenberg MD Arnsberg, Germany
• Independent clinical event adjudication
Enrolment Ongoing
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MIMICS Clinical Program
Feasibility StudyN=101 site
MIMICS
RandomizedControlledvs. straight stent
N=508 sites24-month follow-up1
CE Mark
MIMICS-2
Prospective, multinational evaluation of safety and primary patency at 12 months
N=27147 sites36-monthfollow-up
IDE Study (US, Japan, Germany)
MIMICS-3D
Prospective, observational evaluation within real-world clinical population
N=500+25 sites36-monthfollow-up
EuropeanPost-market Surveillance Registry
MIMICS et seq
Investigator-initiated and retrospective studies evaluating safety, efficacy and performance
Targets of interest:- popliteal- calcified lesions- DCB combination
Post-market & Geographic
1. Zeller et al Circulation CI 2016
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Prof. Thomas ZellerDepartment AngiologyUniversity Heart-Center Freiburg - Bad KrozingenBad Krozingen , Germany
The MIMICS-2 IDE study: interim update on
BioMimics 3D in US, Japan, and Europe