- Corewire of superelastic nitinol, coated with PTFE
- Unique distal “S” shape enhancing procedural safety
- Unequalled shape retention
- No need for a coil surrounding the full length of the device. A stainless steel coil, coated with silicone, is joined to the distal 12cm
Coil Loop Diameter: 3cm
Coil: Stainless Steel
Coil Coating: Silicone
Shaft Coating: PTFE
|S-Wire™||Competitor TAVR Wires|
|Wire material||Nitinol||Stainless steel|
|Distal curve shape||Unique, patented “S” shape||“Pigtail” shape|
|Distal shape retention||No loss of shape when straightened and advanced through catheters||Loss of shape once straightened|
|Wire shaft||Unable to be kinked or bent||May kink|
- The chart to the right is a comparison of the bending stiffness of various guidewires commonly used to deliver TAVR valves. As Valve Delivery Systems (VDS) have become lower profile and more flexible, the necessary degree of guidewire support has decreased.
- The S-Wire™ is slightly less stiff than competitors by design; yet still offers sufficient stiffness to deliver the VDS.
- The S-Wire™ can be supplied in a Bulk Non Sterile (BNS) or sterile, packaged and labeled configuration.
- The sterile S-Wire™ packaging configuration is 5 pouched wires per box.
- A preloaded wire straightener is included with the packaging.
- The tapered distal end of the wire straightener makes it quick and easy to advance the S-Wire™ into the proximal hub of a catheter positioned in the left ventricle.
Configuration During Deployment
- As the wire is advanced out the end of a catheter positioned in the left ventricle, the distal portion of the wire initially curves in one direction.
- Once the distal 10mm of wire is advanced, the distal curve of the wire then abruptly changes direction 180 degrees.
- This provides unique benefits, compared with traditional spiral-shaped wires:
- the distal S curve of the wire centers itself in the left ventricle
- wire perforation of the left ventricle is highly unlikely
- wire entanglement with the mitral valve apparatus – papillary muscles, chordae tendinae – is also unlikely