Visual inspection of the two product samples that were received confirmed they were catalog number su 130-1311, jp 10mm flat silicone drain full length perforated and each one was attached to a 100cc reservoir.
Both drain samples have black suture thread tied around the silicone tube at approx 1.
50 inches from drain/tubing junction area.
Microscopic examination revealed wavy/jagged edges at the fracture sites and no distortion in the adjacent drain which indicates that the drain was not stretched (elongated) to failure.
The characteristics of the fractured area and the absence of any tubing distortion are similar to those failures which may have been caused by nicks or puncture by a sharp instrument.
Another observation in the clear tubing of one sample demonstrated a small cut that passes through one side of the wall of the tubing (not associated with the fracture site) at approx 0.
20 inches from the break site which indicates that the unit was cut with a sharp instrument.
While this analysis cannot conclusively determine the cause for failure, the observations do not lead us to believe that there was in inherent weakness in the material itself.
Moreover, it cannot be concluded with any certainty when or where the drain caution should be taken when using these drains.
To facilitate later removal of the drain, the drain and tubing portions should not be curled, pinched, over-stretched or sutured either internally or externally.
Drains should be placed and removed carefully by hand only with a slow steady pressure.
Excessive force may result in breakage.
Drains or tubing should not be handled with any instruments because this can lead to tearing, warping, or weakening and subsequent breakage of the drain.
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