|
The information provided by bard represents all of the known information at this time.Despite good faith efforts to obtain additional information, the complainant / reporter was unable or unwilling to provide any further patient, product, or procedural details to bard.The manufacturer has received the sample and will evaluate.Results are expected soon.A lot history review (lhr) of rebs0008 showed no other similar product complaint(s) from this lot number.
|
|
The following were reviewed as part of this investigation: patient severity, frequency analysis, applicable previous investigation(s), sample (if available), applicable fmea documents, labeling, and applicable manufacture records.Based on a review of this information, the following was concluded: the complaint of a frayed guidewire was confirmed and found to be likely use-related.The characteristics of the wire break are indicative of tensile forces exceeding the strength of the wire.The sample returned was one guidewire with floppy tip.Visual observation found that the floppy tip of the guidewire was extremely stretched out and uncoiled.Both the core wire and the coil wire were broken.Both the proximal and distal ends of the core wire break were found to be bent into a j-shape.The coil wire at the tip was nearly all uncoiled except for the most distal segment.The distal break point of the coil wire was flattened such that the coils were not noticeable for a segment at the tip.Microscopic evaluation found the fibrous material to be white/clear and fibrous.Two thicknesses of fiber were noticed.The break surfaces on both wires appeared to be granular.The tips of the core wire at the break both appeared to be rounded somewhat.A particle of what appeared to be use residue was found on the uncoiled wire.The length of the wire components do not suggest a piece is missing.The flattening of the coil wire on one side of the break, granular break surfaces in both wires, and roundness at the core wire break surfaces which may signify necking before breakage all suggest that tensile forces were a component in this failure.The lack of uncoiling near the distal tip suggests the possibility that the tip was constrained when it encountered the tensile forces leading to failure.This is potentially consistent with the statement in the complaint description stating that the dilator tip was bent, and that the wire may have caught on the tip, causing it to break.No further action is required because the reported event could not be related to a deficiency in product manufacture or deficiency while under correct product use.The following ifu statements may be helpful: ¿introduce microintroducer.Introduce the microintroducer assembly over the guidewire.Using a twisting motion, advance the assembly into the vessel.¿ ¿avoid sharp or acute angles during implantation which could compromise the patency of the catheter lumen.¿ ¿removing dilator and guidewire.Rotate locking collar of dilator to remove dilator from sheath.Caution: do not withdraw dilator from microintroducer sheath until sheath is within vessel to minimize the risk of damage to sheath tip.Withdraw the dilator and guidewire, leaving the small sheath in place.¿ ¿do not use excessive force when introducing guidewire or microintroducer as this can lead to vessel perforation and bleeding.¿ ¿advance guidewire.Introduce the guidewire through the needle; advance the guidewire 15 to 20 cm into the vessel.Caution: do not advance the wire past the axilla without fluoroscopic guidance or other tip locating methods.Caution: do not cut guidewire to alter length.Caution: do not insert stiff end of guidewire into vessel as this may result in vessel damage.Caution: keep sufficient guidewire length exposed at hub to allow for proper handling.A non-controlled guidewire can lead to wire embolism.Caution: do not use excessive force when introducing guidewire or microintroducer as this can lead to vessel perforation and bleeding.¿ ¿if the guidewire must be withdrawn while the needle is inserted, remove both the needle and wire as a unit to prevent the needle from damaging or shearing the guidewire.¿.
|