MAUDE Adverse Event Report: AOMORI OLYMPUS CO., LTD. SINGLE USE MECHANICAL LITHOTRIPTOR V

Model Number BML-V437QR-30

Device Problems Difficult to Remove (1528); Retraction Problem (1536)

Patient Problem Insufficient Information (4580)

Event Date 04/04/2024

Event Type  malfunction  

Manufacturer Narrative

The evaluation of the event is ongoing.Should additional relevant information become available, a supplemental report will be submitted.

Event Description

It was reported that the single-use mechanical lithotriptor became incarcerated.The gallstones were struck in the basket.The issue was found during the procedure.A therapeutic endoscopic retrograde cholangio panceratography (ercp) procedure was performed.The procedure was cancelled and was decided to be performed at a later date.The patient was under general anesthesia at the time of the cancellation.Though the procedure was delayed, the patient's condition was not impacted.There was no patient harm or injury.

Manufacturer Narrative

This report is being supplemented to provide additional information, based on the legal manufacturer's final investigation and correction to the initial with information inadvertently left out (g2).A review of the device history record found no deviations, that could have caused or contributed to the reported issue.Based on the results of the investigation and past investigation results, it is likely, that the reported malfunction occurred, due to various factors such as the size, hardness or shape of the calculus.The device could not be retracted.However, the subject device was not returned.And the root cause could not be identified.The event can be detected/prevented, by following the instructions for use, which state: "do not use this instrument for a calculus that is assumed impossible to be crushed by a lithotriptor.The pipe or the basket wire may break and part of this instrument may remain in the body"."use this instrument by having the settings to switch to open surgery and the hospitalization plan ready, in case the calculus cannot be crushed by lithotriptor bml-110a-1"."a lithotriptor cannot always crush all calculi captured in the basket.Operation of this instrument is based on the assumption that open surgery is possible as an emergency measure.If the calculus is too hard, it is possible, that the damages shown in chapter 5: ¿emergency treatment¿ may occur.Use the lithotriptor by considering, that it may lead to damaging the instrument and that open surgery may have to take place"."this instrument will deform and/or deteriorate by performing lithotripsy.When lithotripsy is repeated, it will deform and/or deteriorate furthermore.By such deformation and/or deterioration, calculus may not be crushed and/or the instrument with calculus engaged may not be removed from the body.If lithotripsy is required to be repeated in a single case, make sure to check each time that no abnormality is found in action and/or appearance (e.G.Basket wire cut or worn, tube sheath bent, notable coil sheath bent or gap etc.).Stop use, when any abnormality is detected"."during lithotripsy, keep the portion from the coil sheath to the bml handle straight in line with the scope¿s biopsy valve, as much as possible.If not straight, the coil sheath may bend, calculus may not be crushed and/or the instrument with calculus engaged may not be removed from the body"."do not rotate the bml handle knob abruptly.This instrument may break and/or calculus may not be crushed.Also, the instrument with calculus engaged may not be removed from the body".Olympus will continue to monitor field performance for this device.

• Brand Name: SINGLE USE MECHANICAL LITHOTRIPTOR V
• Type of Device: SINGLE USE MECHANICAL LITHOTRIPTOR
• Manufacturer (Section D): AOMORI OLYMPUS CO., LTD.; 2-248-1 okkonoki; kuroishi-shi, aomori 036-0 357; JA 036-0357
• Manufacturer (Section G): AOMORI OLYMPUS CO., LTD.; 2-248-1 okkonoki; kuroishi-shi, aomori 036-0 357; JA 036-0357
• Manufacturer Contact: todd brill ; 800 west park drive; westborough, MA 01581 ; 5082077661
• MDR Report Key: 19193108
• MDR Text Key: 341298576
• Report Number: 9614641-2024-00998
• Device Sequence Number: 1
• Product Code: LQC
• UDI-Device Identifier: 04953170462610
• UDI-Public: 04953170462610
• Combination Product (y/n): N
• Reporter Country Code: JA
• PMA/PMN Number: CLASS2-EXMPT
• Number of Events Reported: 1
• Summary Report (Y/N): N
• Report Source: Manufacturer
• Source Type: Foreign,User Facility,Company Representative,Distributor
• Reporter Occupation: Non-Healthcare Professional
• Type of Report: Initial
• Report Date: 04/26/2024

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Date FDA Received: 04/26/2024
• Is this an Adverse Event Report?: No
• Is this a Product Problem Report?: Yes
• Device Operator: Health Professional
• Device Model Number: BML-V437QR-30
• Device Lot Number: NOT CLEAR
• Was Device Available for Evaluation?: No
• Was the Report Sent to FDA?: No
• Date Manufacturer Received: 04/08/2024
• Was Device Evaluated by Manufacturer?: Device Not Returned to Manufacturer
• Is the Device Single Use?: Yes
• Is This a Reprocessed and Reused Single-Use Device?: No
• Type of Device Usage: Initial
• Patient Sequence Number: 1
• Patient Outcome(s): Other