SimuForm™
Annuloplasty Ring
Surgical Valve Repair
The SimuForm™ ring provides semi-rigid posterior remodeling while offering a flexible anterior portion to accommodate motion.
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Overview
Hybrid Shape
- The mitral valve annulus changes shape in the cardiac cycle. SimuForm™ rings do not have a fixed saddle shape; instead, they change shape in systole and diastole.
- SimuForm™ rings are available in a full size range of 24–40 mm.
Product details
Saddle-shaped in Systole
- Flexible anterior portion accommodates natural motion.
- The saddle has been shown to increase leaflet coaptation and curvature,1-3
and reduce leaflet and chordal stresses.4-6
Planar "O"-shaped in Diastole
SimuForm™ rings are not fixed into a saddle shape — they are flattened to an "O" shape to accommodate diastolic filing dynamics.
Accessory enhancements
Low-profile, Open Holder Place sutures along the entire flexible ring while fully accessing anatomy.
Clearly Marked Cut Towers Easily identify the two cut towers on the holder, which enables quick release of the ring.
Stable Handle-to-holder Connection
Allows for low-force, single-cut release, and remains securely attached during suturing.
Visual Chordal Reference Line
Provides visual reference of annular plane when performing chordal repair.
Experts corner
Dr. Palmen robotic surgery with SimuForm™
Watch Dr. Palmen performing mitral repair robotic surgery.
Prof. Lange on SimuForm™ platform clinical performance: 0% SAM and 0 MR.
Watch Prof. Lange discussing clinical evidence on SimuForm™ Annuloplasty ring at EACTS.
Product specifications and ordering information
Simuform™ Ring product information
A: Inner Ring Diameter
B: Outer Ring Diameter
C: Inner Stiffener Diameter
| Size |
Product |
“A” |
“B” |
Orifice Area |
Stiffener Assembly |
|---|---|---|---|---|---|
| 24 |
7800RR24 |
23.1 |
31.0 |
290 |
24.6 |
| 26 |
7800RR26 |
25.0 |
32.9 |
340 |
26.5 |
| 28 |
7800RR28 |
26.9 |
34.9 |
390 |
28.5 |
| 30 |
7800RR30 |
28.9 |
36.8 |
460 |
30.4 |
| 32 |
7800RR32 |
30.7 |
38.7 |
480 |
32.3 |
| 34 |
7800RR34 |
32.7 |
40.6 |
560 |
34.2 |
| 36 |
7800RR36 |
34.6 |
42.6 |
640 |
36.2 |
| 38 |
7800RR38 |
36.6 |
44.5 |
730 |
38.1 |
| 40 |
7800RR40 |
38.5 |
46.4 |
810 |
40.0 |
Simuform™ Ring ordering information
| Order Number |
Components & Accessories |
|---|---|
| T7800P |
SimuForm Accessory Tray |
| 7800PS |
Set of 9 SimuForm Polysulfone Sizers |
| 7686 7686L 7686XL |
Annuloplasty Handles in Assorted Lengths |
Additional resources
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References
1
Jensen MO, Jensen H, Levine RA, et al. Saddle-shaped Mitral Valve Annuloplasty Rings Improve Leaflet Coaptation Geometry. J Thorac Cardiovasc Surg. September 2011;142(3):697-703.
2
Ryan LP, Jackson BM, Hamamoto H, et al. The Influence of Annuloplasty Ring Geometry on Mitral Leaflet Curvature. Ann Thorac Surg. September 2008;86(3):749-760.
3
Vergnat M, Jackson BM, Cheung AT, et al. Saddle-shape Annuloplasty Increases Mitral Leaflet Coaptation After Repair for Flail Posterior Leaflet. Ann Thorac Surg. September 2011;92(3):797-803.
4
Jimenez JH, Liou SW, Padala M, et al. A Saddle-Shaped Annulus Reduces Systolic Strain on the Central Region of the Mitral Valve Anterior Leaflet. J Thorac Cardiovasc Surg. December 2007;134(6):1562-1568.
5
Padala M, Hutchison RA, Croft LR, et al. Saddle shape of the mitral annulus reduces systolic strains on the P2 segment of the posterior mitral leaflet. Ann Thorac Surg. November 2009;88(5):1499-1504.
6
Pierce EL, Bloodworth CH, Imai A, et al. Mitral Annuloplasty Ring Flexibility Preferentially Reduces Posterior Suture Forces. J Biomech. June 25, 2018;75:58-66.