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

Model Number BML-V437QR-30

Device Problem Separation Problem (4043)

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

Event Type  malfunction  

Event Description

An olympus representative reported on behalf of the customer, that when using a single use mechanical lithotriptor v, the handle stopped turning before the gallstone could be gripped firmly.The steering wheel could not turn forward or backward.The user pressed the unlock button and separated the basket from the handle, then removed the basket from the body.The therapeutic procedure (lithotripsy of bile duct stones) was completed with a similar device.There was a procedural delay of an unknown period of time to switch devices.There was no patient harm associated with the event.

Manufacturer Narrative

The device was returned and evaluated, and the customer¿s allegation (lithotriptor withdrawn) was not confirmed.However, the basket was deformed, the tube sheath was buckled, and there was coil misalignment at the distal end of the insertion portion of the coil sheath.The investigation is ongoing, and a supplemental report will be submitted upon completion of the investigation or if any additional information is provided.

Manufacturer Narrative

This report is being supplemented to provide additional information based on the legal manufacturer's final investigation.A review of the device history record found no deviations that could have caused or contributed to the reported issue.It has been less than 1 year since the subject device was manufactured.Based on the results of the investigation, the root cause could not be determined.However, the reported event was likely caused by the following mechanism: 1.Due to various factors such as the shape, numbers, hardness of the calculus, a force beyond the strength resistance was applied to the device during the lithotripsy.2.Due to the condition described above, the basket deformed, and a coil misalignment occurred in the coil sheath.3.The basket was temporarily incarcerated.As a result, the bml handle could not be operated.Moreover, buckling of the tube sheath likely occur during the handling the device.The event can be detected/prevented by following the instructions for use (ifu) which state: ¿do not use this instrument for a calculus that is assumed impossible to be crushed by a lithotripter.The pipe or the basket wire may break, and part of this instrument may remain in the body.¿ ¿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
• Manufacturer Contact: todd brill ; 800 west park drive; westborough, MA 01581 ; 5082077661
• MDR Report Key: 18058628
• MDR Text Key: 328488011
• Report Number: 9614641-2023-01648
• 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: K903529
• Number of Events Reported: 1
• Summary Report (Y/N): N
• Report Source: Manufacturer
• Source Type: Other,Foreign,User Facility,Company Representative,Distributor
• Reporter Occupation: Non-Healthcare Professional
• Type of Report: Initial,Followup
• Report Date: 11/15/2023

1 Device was Involved in the Event

1 Patient was Involved in the Event

• 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: 32K
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 10/23/2023
• Was the Report Sent to FDA?: No
• Initial Date Manufacturer Received: 10/12/2023
• Initial Date FDA Received: 11/02/2023
• Supplement Dates Manufacturer Received: 11/14/2023
• Supplement Dates FDA Received: 11/15/2023
• Was Device Evaluated by Manufacturer?: Yes
• Date Device Manufactured: 02/02/2023
• 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: MAJ-441 BML HANDLE V