Method: the dual catheters were received for testing and analysis.In addition to the visual inspection, a photographic images, tensile strength testing, and microscopic inspection were performed.A review of the device history record (dhr) and instructions for use (ifu) was performed.Results: catheter #1 was returned not fully intact, it was missing the black catheter tip.Evidence of attenuation was observed throughout the catheter and infusion segment where the breakage occurred.The diameter of the attenuated broken segment was measured to be 0.019¿.The non-attenuated segment was measured to be 0.0044¿.The soaker catheter was examined under a microscope magnified at 2x, no signs of brittleness were observed.Tensile strength testing was performed on the soaker catheter #1.The passing rate for the test is >2.8(lbf) at the infusion segment and >4.00 (lbf) for the mid-body segment.The result for the catheter mid-body segment was 9.36(lbf).Tensile strength testing was not performed on the infusion segment portion due to length.The catheter met specifications during the tensile strength testing and no additional testing was performed.Catheter #2 was returned fully intact.No damages were observed at the catheter.The catheter's diameter was measured to be 0.0044'.The soaker catheter was examined under a microscope magnified at 2x, no signs of brittleness were observed.Tensile strength was performed on the soaker catheter #2.The passing rate for the test is >2.8(lbf) at the infusion segment and >4.00 (lbf) for the mid-body segment.The result for the catheter's mid-body segment was 11.94(lbf) and infusion segment was 4.98(lbf).The catheter met specifications during the tensile strength testing and no additional testing was performed.The dhr of the reported lot was reviewed.According with the results, the production lot met all manufacturing and quality specifications.The production lot met all manufacturing and quality specifications at release.The ifu advises ¿if resistance is encountered during removal, or if the catheter stretches, stop, continued pulling could break the catheter.It is advisable to cover the site with warm compress and, wait 30-60 minutes and try again.The patient¿s body movements may relieve the catheter to allow easier removal.If the catheter is still difficult to remove, an x-ray is recommended.¿ conclusion: the used catheters were returned for testing, and the investigation summary concluded that catheter #1 was returned not fully intact and missing the black catheter tip.Evidence revealed that attenuation was observed where the breakage occurred.Tensile strength testing was performed on the mid-body segment and the catheter met specifications.Soaker catheter #2 observed no damages and met specifications during the tensile strength testing.It was reported that the user felt resistance (4/5) while removing the catheter, the catheter had stretched and appeared grayish/white before breaking.Based on the investigation results and the reported information, the catheter broke due to excessive force.Therefore, the complaint disposition is confirmed.Information from this incident has been included in our product complaint and mdr trend reporting system.
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