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

Model Number BML-V437QR-30

Device Problems Mechanical Problem (1384); Difficult to Remove (1528)

Patient Problem No Clinical Signs, Symptoms or Conditions (4582)

Event Date 03/08/2023

Event Type  malfunction  

Manufacturer Narrative

The device will be returned.The investigation is ongoing.A supplemental will be submitted on completion of investigation or if any additional information is available.

Event Description

The customer reported to olympus, the single use mechanical lithotriptor v was incarcerated and the basket could not be removed during an endoscopic mechanical lithotripsy (eml) procedure.The lithotriptor was withdrawn together with the scope.Another scope and lithotriptor were used to complete the procedure.There was a delay in procedure and the patient was under sedation at the time of delay.Duration of delay was unknown.The lithotriptor sheath was caught in the forceps elevator of the scope and the sheath could not be removed from the bml handle.The device was inspected before usage and there were no issues.There were no reports of patient harm associated with the event.This report captures the complaint on the lithotriptor (model: bml-v437qr-30, model description: single use mechanical lithotriptor v ).Patient identifier (b)(6) captures complaint on the scope (model : jf-260v, model description : evis lucera duodenovideoscope , serial number : (b)(4).Patient identifier (b)(6) captures complaint on the bml handle (model: maj-441, model description: bml handle v).

Manufacturer Narrative

This report is being supplemented to provide additional information based on the legal manufacturer's final investigation, correction to g2, and the device evaluation.Please see updates to d8, d9, g2, h3, h4, h6 and h10.The device was returned to olympus for inspection, and the customer's complaint (gallstones were temporarily stuck in the basket) was confirmed.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, it¿s likely the tube sheath was severed by the customer for emergency measures.A definitive root cause of the gall stones temporarily stuck in the basket could not be determined, however probable causes include: 1) due to various factors such as the size, hardness or shape of the calculus, a load beyond the resistance strength applied to bml-v437qr-30 during the lithotripsy.2) as a result, the coil misaligned, and the coil sheath was deformed.3) an attempt was made to remove the device from endoscope.However, the deformed portion of the coil sheath got stuck at the forceps elevator.This prevented the device from removing from the endoscope.The following is included in the instructions for use: ¿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.If it is difficult to remove the basket sire from the bml handle, depress the button on the bml handle¿s holder firmly for easy removal.¿ 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
• Manufacturer Contact: todd brill ; 800 west park drive; westborough, MA 01581 ; 5082077661
• MDR Report Key: 16626338
• MDR Text Key: 312437182
• Report Number: 9614641-2023-00439
• Device Sequence Number: 1
• Product Code: LQC
• UDI-Device Identifier: 04953170218415
• UDI-Public: 04953170218415
• 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: Other,Foreign,Health Professional,User Facility,Distributor
• Reporter Occupation: Non-Healthcare Professional
• Type of Report: Initial,Followup
• Report Date: 06/09/2023

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Date FDA Received: 03/28/2023
• 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: 25K
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Was the Report Sent to FDA?: No
• Date Manufacturer Received: 05/22/2023
• Was Device Evaluated by Manufacturer?: Yes
• Date Device Manufactured: 05/19/2022
• 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
• Treatment: JF-260V DUODENOVIDEOSCOPE (SERIAL NO: (B)(6).; MAJ-441 (BML HANDLE V).