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(b)(4).The customer returned one guide wire and 18ga introducer needle for analysis.Signs of use in the form of biological material were observed on and within the returned components.Visual analysis revealed multiple kinks along the guide wire body.Microscopic examination confirmed the damage.Both welds appeared full and spherical.No other defects or anomalies were observed with the introducer needle.The kinks in the guide wire measured 78, 270, and 435mm from the distal tip.The guide wire length measured 455mm, which is within the specification limits of 450-458 mm per guide wire product drawing.The guide wire outer diameter measured 0.804mm, which is within the specification limits of 0.788-0.826 mm per guide wire product drawing.The needle cannula outer diameter measured 0.0499", which is within the specification limits of 0.0495"-0.0505" per needle cannula product drawing.The inner diameter of the needle cannula measured 0.041", which is within the specification limits of 0.041"-0.043" per cannula product drawing.The guide wire and introducer needle were functionally tested per the product instructions-for-use (ifu).The ifu provided with this kit instructs the user , "advance guidewire into arrow raulerson syringe approximately 10 cm until it passes through syringe valves or into introducer needle." the returned guide wire was advanced through the tip of the returned introducer needle, and the guide wire could not pass at the location of the hub due to a blockage composed of biological material.Once the blockage was removed, the guide wire advanced as intended.A manual tug test confirmed that both the distal and proximal welds were intact.A device history record review was performed, and no relevant manufacturing issues were identified.The ifu provided with the kit informs the user, "do not apply excessive force in placing or removing catheter or guidewire.Excessive force can cause component damage or breakage.If damage is suspected or withdrawal cannot be easily accomplished, radiographic visualization should be obtained and further consultation requested." the report of a guide wire/needle resistance with a kinked guide wire was confirmed through complaint investigation of the returned sample.Visual and functional analysis revealed that the guide wire met resistance due to a build-up of biological material inside the needle.The guide wire and needle met all relevant dimensional and functional requirements.A device history record review did not identify any manufacturing related issues.Based on these circumstances and the customer description, unintentional use error likely caused or contributed to this event.Teleflex will continue to monitor and trend for reports of this nature.
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