ASD devices

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ASD devices

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ASD devices

  1. 1. ASD DEVICES
  2. 2. COMPLICATIONS OF ASD DEVICE CLOSURE(8.6%) 3.5% Incidence Of Device Embolisation-90% To PA 2.5%incidence Of Arrhythmias Device Malfunction <=1% Cases Pericardial Effusion <0.1 Cases Surgery 2-3% Thrombosis And Embolism <0.1% Local Complications <=1.0% Massimo Chessa et al JACC Vol. 39, No. 6, 2002March 20, 2002:1061–5
  3. 3. ASD DEVICES
  4. 4. AMPLATZER SEPTAL OCCLUDER  Self-expandable  Double disc  Nitinol wire mesh 0.004” - 0.008”  Polyester fabric fills the waist and discs  Sizes: 4-40 mm(waist diameter)  Waist length 3-4 mm  LA disc exceeds waist by 12-16 mm  RA disc exceeds waist by 8-10 mm
  5. 5. Advantages - Largest experience worldwide - Very easy to use - Retrievable until release - All sizes up to 40mm • Disadvantages - Erosion and tamponade (very rare,0.1%)
  6. 6. GORE HELEX Septal Occluder  Two discs formed by one continuous wire in the shape of a spiral  15- 35 mm sizes available  ePTFE patch attached to the wire
  7. 7. Advantages: •Preloaded in catheter •Soft and atraumatic •No long sheath required, so reduced risk of air embolism •Safety chord - retrievable at any stage of the procedure, even after release •Metal mostly covered, so no thrombus formation/erosion experienced Disadvantages: •Difficult to teach •Device embolizations ?more frequent than with other devices •Residual shunts more frequent (but no embolic events) •Wire fractures – rare •Defects up to 20 – 22 mm
  8. 8. LIFETECH /CERA DEVICES Sizes 6 mm to 40 mm Need 8 Fr to 14 Fr sheaths Available with a kink-resistant delivery Sheath Nitinol ,Polyester, Pure Stainless Steel tip, ePTFE membrane
  9. 9. Cocoon device • Self-Expanding Platinum-Coated Nitinol Devices • Coating helps to Prevent Nickel Release
  10. 10. CLAMSHELL DEVICE • WITHDRAWN BECAUSE OF STRESS FRACTURES
  11. 11. CARDIOSEAL/STARFLEX SEPTAL REPAIR IMPLANT •Modified version of the Clamshell device •2 square Dacron patches mounted between four steel arms To Facilitate Device Centering •STARFlex has additional microsprings attached to device arms
  12. 12. Advantages: •Long experience (1996) •Easy to use (premounted version) •Device arms are flexible and can bend independently from each other Disadvantages: •Difficult to retrieve when right disc is opened •Wire fractures (in larger defects and devices) •Thrombus formation •New onset of atrial fibrillation •Maximum defect of 20 – 22 mm
  13. 13. OCCLUTECH FIGULLA OCCLUDER • Tips of the mesh wires brought together in one hub at the right atrial end • Reduced material in the left atrium • Flat low profile of the left atrial disc • No hub or edges on left atrial disc • Easy to use and retrievable • Sizes: 6 – 36 mm in 3 mm increments • Larger sheath compared with Amplatzer for similar sizes
  14. 14. FIGULLA FLEX ASD AND PFO OCCLUDERS • Available from 6 mm to 40 mm size • Retrievable and safe • System allows a tilt of 45 degrees using a biopsy forceps delivery method • Therefore much better when used in challenging cases
  15. 15. BIOSTAR IMPLANT • STARFlex® self—centering • Cardioseal framework • Bioresorbable collagen derived from the submucosa derived from the intestine • Improved “biological” edge to edge seal matrix gradually remodeled and replaced with host tissue
  16. 16. BIOTREK BIOABSORBABLE SEPTAL REPAIR • Polymer: – novel bioabsorbable polymer (P4HB) – absorbs as a non-inflammatory natural metabolite • Design: – conforms to wide range of defect morphologies – easy to use - repositionable and radiopaque • Implant/Tissue Interface: incorporates biological response modifiers to regulate thromboresistance and endothelialization • Newest development Status: currently in pre-clinical studies
  17. 17. THANK YOU

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