
2
1.0 Device Description
•
Edwards SAPIEN XT Transcatheter Heart Valve – Model 9300TFX (Figure 1)
The Edwards SAPIEN XT transcatheter heart valve is comprised of a balloon-expandable,
radiopaque, cobalt-chromium frame, trileaflet bovine pericardial tissue valve, and a polyethylene
terephthalate (PET) fabric skirt. The leaflets are treated according to the Carpentier-Edwards
ThermaFix process.
Table 1
Valve Size
Height
23 mm
14.3 mm
26 mm
17.2 mm
29 mm
19.1 mm
Table 2
Native Valve Annulus
Size
(TEE)
Native Valve Annulus Size
(CT)
Valve Size
Area
Area Derived
Diameter
18-22 mm
314 – 415 mm
2
20-23 mm
23 mm
21-25 mm
415 – 530 mm
2
23-26 mm
26 mm
24-27 mm
530 – 660 mm
2
26-29 mm
29 mm
Valve size recommendations are based on native valve annulus size, as measured by
transesophageal echocardiography (TEE) or computed tomography (CT). Patient anatomical
factors and multiple imaging modalities should be considered during valve size selection.
Note: Risks associated with undersizing and oversizing should be considered.
For transcatheter valve-in-surgical valve procedures, size recommendations for surgical
bioprostheses with
internal orifice diameters
are shown in Table 3.
Table 3
Bioprosthesis Internal Orifice
Diameter
SAPIEN XT Valve Size
18-21 mm
23 mm
21-23.5 mm
26 mm
23.5-27 mm
29 mm
NOTE: The internal orifice diameter of the surgical bioprosthesis must be determined so
that the appropriate valve size can be implanted. The bioprosthesis internal diameter of
the primary implanted device is best determined by using computed tomography,
magnetic resonance imaging, and/or transesophageal echocardiography to perform the
necessary measurements. The internal orifice diameter is a directly measured or area
derived diameter measurement of the internal opening of the failed surgical valve.
NOTE: Exact volume required to deploy the valve may vary depending on the
bioprosthesis internal orifice diameter. Do not exceed the rated burst pressure.
See Table 4 for inflation parameters.