A user facility reported that a patient experienced a blister to the right temporal area with redness and swelling on the left forehead following a facial thermage flx procedure.The patient received artificial skin and an ice pack for the injury.It is noted that the patient did not apply any over the counter medicine post treatment.The current status is reported that the blisters are resolving.The outcome noted as no permanent injury expected: however, post inflammatory hyperpigmentation is expected.No picture was available for review.The exact location of injury is to the right temporal area with a 0.5 cm by 0.5 cm blister & left forehead (hairline) 1 cm of redness.The nature of the injury is reported as a burn, 1st degree ¿ superficial redness and swelling, 2nd degree ¿ blister, (minor).Superficial anesthetic was administered to the patient prior to the treatment and the patient was alert and able to provide feedback during treatment.The patient's current status is reported that the blisters are resolving.No other treatments (besides the one reported) were being performed in same area where symptoms were reported.The patient has undergone sofwave forehead (100 lines) in the same symptom area within the past 90 days.The patient has had prior laser, once every 3 months, aesthetic treatments on this area.The incident is reported to have occurred at 900 reps with the highest energy level used at 1.5 j.No system errors occurred nor was anything out of the ordinary noticed during treatment.The patient was treated with a stamping method.Cryogen and 40 ml of unscented coupling fluid were used for treatment.The treatment tip was inspected prior to use and nothing remarkable reported.The treatment tip was inspected during use at about every 3-4 pulses.This same individual tip has not been used to treat other patients.
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Correction: h4 device manufacturing date from: 10/14/2023 to: 09/14/2023.Correction: component codes from: 484 to: 4755.The datalog review revealed the following: quantity - error id - description - percent of reps (b)(4) - ec785 - err_treatment_tip_lifted_prematurely - (b)(4).(b)(4) - ec781 - err_activation_button_timed_out - (b)(4).(b)(4) - ec485 - err_treatment_tip_too_cold - (b)(4).(b)(4) - ed4c8 - err_gen_rf_tx_reflect_pwr_mon_err - (b)(4).(b)(4) - ec78c - err_treatment_tip_temp_high - (b)(4).When the system detects a condition that interrupts treatment, a system error code is displayed.These system error codes provide an error code number and instructions for how to respond to the error.In the event of a system error, the user needs to intervene and follow the onscreen instructions to proceed with treatment.Based on the evaluation of the data, the system and handpiece perform as expected.The treatment tip was returned and evaluated.The tip passed the leak and thermistor test.The tip also passed visual inspection as no dents, scratches, blemishes, or dielectric breakdown was observed.No functional test was performed due to tip being expired.No issues were found during the evaluation of the tip.According to the thermage flx system user manual, burns and blisters are known possible adverse patient reactions to thermage flx treatment.The procedure produces heating in the upper layers of the skin and may cause burns and subsequent blister and scab formation.There is a small chance of scar formation.Application of topical steroidal or antibiotic preparations may be of benefit.In the rare instance of a burn that results in a scar, the scar will probably be very small and respond readily to removal with a laser device.A review of manufacturing records showed all requirements were met.No nonconformities or anomalies were found related to this complaint when reviewing the device history record.The lot history, trend analysis, risk analysis and directions for use review were considered acceptable, with the product performing within anticipated rates.Based on the available information, burns and blisters are known possible adverse patient reactions to thermage flx.At this time, no capa is necessary.
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