The valve was received for evaluation: dhr - lot 5321028, conformed to the specifications when released to stock.Failure analysis - the valve was visually inspected; the siphon guard was disconnected from the valve.There is cuts/tears in the silicon housing and marks also noted in the siphon guard.The complaint was confirmed.Root cause - the root cause for the ¿cuts/tears in the silicon housing¿ are due a sharp or pointed object coming into contact with the valve, as noted in the surgical procedure precautions section in ifu, silicone has a low cut/tear resistance.The root cause for the ¿marks noted in the siphon guard¿ are due a sharp or pointed object coming into contact with the valve.Additional information received: reason for surgical valve revision: deterioration of the patient's condition.Failure of the valve: on re-intervention, finding of leaky valve, damaged material, important effusion: since the initial implantation of the valve, has the valve be punctured: no.Date of implantation: (b)(6) 2022.
|