|
A non-healthcare professional reported that during an intraocular lens (iol) implant procedure, the trailing haptic was stuck and could not be unfolded therefore, it was removed from the eye.The surgery was completed on the same day by using an unspecified lens.There was no patient harm.
|
|
Additional information has been provided in d.9., h.3., h.6., and h.11.The device and the lens were returned in the carton.The plunger lock and lens stop were removed.The plunger was oriented correctly.Viscoelastic was observed in the device.The plunger was fully advanced with the plunger extending outside the tip of the nozzle.A broken portion of the trailing haptic was caught in the nozzle tip and extended on the right side of the plunger.The distal haptic tip was oriented toward the loading area.Stress lines were observed on the nozzle tip.The lens was returned outside the device in a small envelope.Viscoelastic was dried on the lens.One haptic was broken in the haptic/optic junction.A portion of the broken distal haptic area was caught inside the nozzle tip of the device.The anterior optic surface was scraped and scratched near the broken haptic area.The center of the optic anterior was cracked and directly opposite on the posterior.Outlines of cracked damage in the shape of an instrument used to grasp the lens were observed in two areas on both the anterior and posterior optic surfaces.There was no haptic found stuck to the optic condition observed upon return.The nozzle was removed and cleaned for further evaluation.The broken haptic tip was removed during cleaning.Top coat dye stain testing was conducted with acceptable results.A device history record review and a non-conformance review of the reported lot number was conducted.The deviation review did not reveal any potential contributing factors to the reported complaint and all corresponding production release specifications defined in the device master record were met.A non-qualified viscoelastic was used.The root cause for the reported complaint may be related to a failure to follow the ifu (instructions for use).A non-qualified viscoelastic was used.The ifu instructs: during device preparation and implantation of the iol with the preloaded delivery system, an company qualified ophthalmic viscoelastic device (ovd) should be used.The use of an unqualified ovd may cause damage to the lens and potential complications during the device preparation and implantation steps.The trailing haptic distal tip position indicates it was not in a proper position for advancement per the provided diagrams in the ifu.The ifu instructs: after the lens has been advanced to the ¿fill-to¿ line, the lens should be visually inspected to determine the position of the haptics.The plunger should be in contact with the trailing optic edge.No part of the lens should exit the nozzle prior to insertion through the incision.Once the lens is in position at the ¿fill-to¿ line, it should be implanted within 3 minutes.Proceeding with implantation of a misfolded haptic or a lens that appears to be ¿out of position¿ can result in a broken haptic or other negative outcome, since the haptic may be trapped and stretched, and/or pinched and sheared by the moving plunger.The ifu instructs: take at least 7 seconds to gently fold the iol (intraocular lens) by advancing the plunger forward in one smooth, continuous motion until the front edge of the optic is even with the ¿fill-to¿ line on the nozzle.Do not allow any portion of the lens to exit the nozzle tip.At this position the blue spring will contact the clear main body.It is important to not advance the plunger abruptly to fold the iol as improper folding and lens damage may occur.Broken haptics may occur: due to the use of a non-qualified viscoelastic.The use of an unqualified ovd may cause damage to the lens and potential complications during the device preparation and implantation steps.If the operating room temperature is too high (> 23°c / 73° f) lens folding consistency is negatively affected, the lens is more adherent and this may inhibit lens advancement.In addition, haptic strength (modulus) decreases as the temperature increases and is more likely to break under stress.If a straight trailing haptic occurs and it was not properly detected to be out of position.If the plunger is not fully advanced, or if the plunger is allowed to retract, the trailing haptic may not release properly from the device.Any of the above listed causes alone, or in combination, may create the reported event topcoat dye stain testing was conducted with acceptable results.The manufacturer internal reference number is:(b)(4).
|