(b)(4).The customer returned multiple components of a cath-lab sheath set, including one dilator, sheath, and product lidstock, for analysis.No definite signs of use were observed.Visual analysis of the sheath did not reveal any obvious defects or anomalies.The overall length of the sheath measured 9 3/4" which is within the specification limits of 8 7/18" - 9 6/8" per the sheath/dilator product drawing.The outer diameter of the sheath measured 0.12785" which is within the specification limits of 0.124" - 0.128" per the sheath extrusion graphic.The instructions for use (ifu) provided with this kit instructs the user, "ensure dilator hub fully snaps into sheath cap.Thread tapered tip of sheath/dilator assembly over guidewire.Grasping near skin, advance assembly into vessel with slight twisting motion to desired position." the returned dilator was advanced through the sheath and the hub snapped into place with little to no resistance.Then a lab inventory guide wire was advanced through the sheath/dilator assembly, and little to no resistance was encountered.The sheath was also flushed through the sidearm using a lab inventory ars, and the sheath was able to flush as intended.No blockages were identified.Per ifu statement "prepare sheath for insertion by flushing through side arm." a device history record review was performed, and no relevant findings were identified.The ifu provided with this kit informs the user, "do not apply excessive force in removing guidewire or sheath/dilator.If withdrawal cannot be easily accomplished, determine cause using fluoroscopic guidance and request further consultation, if necessary.".The customer report of a blocked sheath could not be confirmed through investigation of the returned sample.The sheath passed all relevant visual, dimensional, and functional requirements, and a device history record review revealed no relevant findings.Teleflex will continue to monitor and trend on reports of this nature.
|