Memo 4D

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RESHAPING MITRAL REPAIR

MEMO 4D: DESIGNED TO BEST SUPPORT YOUR TECHNIQUE.

MEMO 4D’s high-tech Nitinol core, thanks to its clinically proven physiological behavior, offers you a complete, long-lasting solution to treat Mitral Regurgitation (MR). Now available with unique features to best support any repair.
 

MRI safety information
 

IM-01843 A

Features

DESIGN ELEMENTS

UNIQUE RANGE OF SIZES

Large sizes are preferred by surgeons in facilitating repair in the presence of severe degenerative MR like Barlow's disease or big annuli.

A complete range of sizes to meet a size-specific repair principle. The 42 mm size is unique to MEMO 4D.


PROGRESSIVE INCREASE OF THE
ANTEROPOSTERIOR DIAMETER

The progressive increase of the anteroposterior diameter of MEMO 4D, from size 34 to size 42, helps accommodate excess leaflet tissue while reducing the risk of Systolic Anterior Motion (SAM).

 

 

 

 

 

EXCLUSIVE GRADUAL SADDLE SHAPING

The anterior saddle shape, gradually enhanced from size 34 to size 42, is designed to optimize the physiological geometry in enlarged annuli that have lost their three-dimensional profile.

 

 

 

STABILITY AND SUPPORT

The right balance of rigidity and flexibility to support any repair MEMO 4D, semi-rigid annuloplasty ring, provides the stability and support to the annulus while providing dynamic flexibility of movement. 

The natural annular dynamics of the MEMO platform is  clinically proven and acknowledged:
“MEMO 3D preserves annular dynamics and folding dynamics.1
“MEMO 3D allows for contraction during systole,
an increased depth of coaptation of the leaflets,
and an improvement in annular orifice area during diastole.4

 

 

THREE LAYER STRUCTURE

• Oval silicone sheath 
Ease-of-implant with a perfect annular fit
   
• Nitinol cell structure
Optimally accommodates the diastolic phase and provides consistent recovery of the natural systolic profile

• Carbofilm® Coating 
Reduces inflammatory reaction favoring a gentle endothelialization.6,10

 


 

MAXIMIZED HEMODYNAMICS

Truly physiological three-dimensional motion of the mitral annulus with a natural anterior/posterior to lateral/ lateral relationship to maximize blood flow,1,2,3,4,5 even five years after implantation.6

“In our study, the semi-rigid MEMO 3D annuloplasty ring was associated with a better hemodynamic at rest and during exercise and clinical status.3

EASE OF IMPLANT


The “slim fit” ring seats perfectly to the patient annulus

  • Wide, streamlined silicone filler facilitates suturability
  • Optimal fit to the mitral annulus





A Fully Versatile Holder

  • Neochordae can pass through the aperture
  • Single cut to unhook the whole holder 








Designed to Facilitate MICS Approach

  • Low-profile holder
  • Ultra-slim template with two handles 

 

 

 

RECHORD SYSTEM

A chordal sizing system that aims to standardize neochordae implantation without the need for physical measurement.


A series of loops in the posterior region act as temporary reference elements for easier length sizing of chords for both anterior and posterior repair.
The innovative system promotes standardized chord implantation, offering reproducible results while accelerating procedure times.7,8


“The chordal guiding system markedly reduces the time of the procedure by facilitating sizing and knotting.9

 

AVAILABLE MODELS


PRODUCT ORDERING INFORMATION


ACCESSORIES ORDERING INFORMATION

REFERENCES

  1. Ryomoto et al. - “Is Physiologic Annular Dynamics Preserved After Mitral Valve Repair With Rigid or Semirigid Ring?” - Ann Thorac Surg 2014;97:492–8
  2. Nishi et al. - “Annular Dynamics After Mitral Valve Repair With Different Prosthetic Rings -Real-Time 3-Dimensional Transesophageal Echocardiography Study.” - Circulation 2013; 128: A16940
  3. K. Fattouch et al. - “A Comparison of Two Mitral Annuloplasty Rings for Severe Ischemic Mitral Regurgitation: Clinical and Echocardiographic Outcomes.” - Semin Thoracic Surg Summer 2016 Vol. 28, Issue 2, Pages 261–268
  4. Bruno et al. - “Early Clinical Experience and Echocardiographic Results With a New Semirigid Mitral Annuloplasty Ring: The Sorin MEMO 3D” - Ann Thorac Surg 2009;88:1492– 8
  5. Ryomoto et al. - “Physiological mitral annular dynamics preserved after ring annuloplasty in mid-term period.” - Gen Thorac Cardiovasc Surg. 2017 Nov;65(11):627-632
  6. Santarpino G, Pfeiffer S, Fischlein T - “First-in-man implantation of a Sorin MEMO 3D ring: Mitral annular flexibility is still preserved at 5 years of follow-up!” - Int J Cardiol. 2011 Dec 14
  7. Ryomoto et al. - “Physiological mitral annular dynamics preserved after ring annuloplasty in mid-term period.” - Gen Thorac Cardiovasc Surg. 2017 Nov;65(11):627-632
  8. Nishi et al. - “Annular Dynamics of MEMO 3D Annuloplasty Ring Evaluated by 3D Transesophageal Echocardiography.” - Gen Thorac Cardiovasc Surg. 2018 Jan 17
  9. G. Szabó et al. - “The Novel Livanova 3D Rechord Semirigid Ring Facilitates Mitral Valve Repair With Artificial Chords: A Matched Pair Analysis.” - Poster presented at Mitral Conclave 2017, NYC
  10. Della Barbera et al. - “Sovering annuloplasty rings: Experimental pathology in the sheep model.” - Cardiovascular Pathology 14 (2005) 96– 103

 

 

Download Area

  • LN_IM-01785 B MEMO4D_brochure.pdf download 1.72 MB application/pdf

  • LN_IM-01784 B_MEMO4D_FLYER.PDF download 834.44 kB application/pdf

This product may not be for sale in your country or your area. For further information on product availability, please contact your local representative

Caution: Federal law (USA) restricts this device to sale by or on the order of a physician. For indications, contraindications, precautions and warnings for each device, please refer to the Instructions For Use