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Scottsdale-LincolnHealthNetwork
Tryton Breakfast Symposium:
Real World Applications
David G. Rizik, M.D., F.A.C.C., F.S.C.A.I.
Chief Scientific Officer
Director of Structural & Coronary Interventions
HonorHealth and the Scottsdale-Lincoln
HealthNetwork
HonorHealth/Scottsdale-LincolnHealthNetwork
Scottsdale-LincolnHealthNetwork
Disclosure Statement
• Abbott  Vascular:  Medical  Advisory  
Board,  Research  &  Education  
Support.
• Boston  Scientific:  Executive  
Physician  Council,  Research  &  
Education  Support
Scottsdale-LincolnHealthNetwork
Tryton Side Branch Stent
“Save  the  Side  Branch  Strategy”
Open strut architecture
Scottsdale-LincolnHealthNetwork
Phantom Model Deployment
Tryton  Side  Branch  Stent
Scottsdale-LincolnHealthNetwork
Tryton Deployment Sequence
1.  Wire  both  vessels  and  pre-­dilate  SB 2.  Position  Tryton
3.  Perform  P.O.T. 4.  Position  DES  and  remove  ‘jailed’  wire
5.  Deploy  DES  and  re-­wire  SB
6.  Simultaneous  Kissing  Balloon
Scottsdale-LincolnHealthNetwork
Tryton Case
Scottsdale-LincolnHealthNetwork
Scottsdale-LincolnHealthNetwork
Scottsdale-LincolnHealthNetwork
Scottsdale-LincolnHealthNetwork
Dedicated SB Stent: ? Value
• Value:  Bringing  the  predictability &  
durability seen  in  straight  lesions  to  
bifurcation  lesions
Scottsdale-LincolnHealthNetwork
Provisional  (n=  143)
Tryton  (n=  146)
Dedicated Stent: Predictability
Near elimination of bailout stenting
Généreux et  al.  Catheter  Cardiovasc Interv.  2015  
Tryton  IDE  Trial  Intended  Population
Scottsdale-LincolnHealthNetwork
Which Lesion? Significant Side Branch
• Side  Branch  Size:   Significant
• Angle:     Narrow  and  Wide
• Step-­up:     Large  and  Small
Scottsdale-LincolnHealthNetwork
Which Lesion? Significant
• Significant
– Appropriate  for  a  2.5  mm  diameter  stent
– >2.25  mm  by  visual  estimate
Scottsdale-LincolnHealthNetwork
Scottsdale-LincolnHealthNetwork
Angle:    Wide Angle:    Narrow
Which Lesion? Angle
Scottsdale-LincolnHealthNetwork
SB-­MB  Step-­up:    Large   SB-­MB  Step-­up:    Small
Which Lesion? SB-MB Step-up
Scottsdale-LincolnHealthNetwork
Conclusion
• When  a  dedicated  SB  Stent?
Bifurcation  lesions  with  important  Side  
Branches
• Procedural  Predictability
• Long  term  Durability

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D.Rizik, tryton breakfast symposium_real world applications