Cardiac Surface Grid Series
Hardware
A cardiac surface grid is a 12 µm polyimide array that sits on the epicardium and deforms with it, designed to keep every site in contact through the cardiac cycle, because on a beating surface motion artifact, not amplitude, limits the recording.
An array that loses and regains contact through the cycle produces signal that cannot be separated from the mechanics. Two layouts address the deformation: accordion designs fold along one axis, and segmented 8×8 designs divide the array so regions flex independently. Catalog designs have 16, 64 or 128 platinum sites of 575 µm diameter on a 150 mm cable; across catalog and custom designs, site counts run 4 to 256. A grid is combined with a penetrating probe for surface and depth recording in one preparation. The four grid families and their packaging are under thin-film grid.
Records and stimulates. Research use only.
Typical values
| Catalog designs | 5 |
|---|---|
| Sites | 16 to 128 |
| Substrate | 12 µm polyimide; platinum sites |
| Layouts | accordion; segmented 8×8 |