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

Model Number BML-V437QR-30

Device Problem Difficult to Remove (1528)

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

Event Date 07/11/2023

Event Type  Injury  

Manufacturer Narrative

The suspect device was returned to olympus for evaluation.The tube sheath was not returned with the operation wire and pipe.The weld between the wire and pipe was noted to be broken and the basket was found deformed.There was no problem with the brazing condition of the operating pipe, and there was no abnormality in the outer diameter of the operating pipe and joint.There was also no abnormality in the fracture surface of the joint.There were no other abnormalities noted.The investigation is ongoing.A supplemental report will be submitted upon completion of the investigation.

Event Description

The customer reported to olympus that while using a single use mechanical lithotriptor v, gall stones were stuck in the basket temporarily but were able to be freed from the basket after the wires were cut.The lithotriptor was then withdrawn.The issue was found during a therapeutic endoscopic retrograde cholangiopancreatography, which was completed with the device without significant delay.There were no reports of additional impact to the patient.There was no harm or user injury reported due to the event.

Manufacturer Narrative

This report is being supplemented to provide additional information based on the legal manufacturer's final investigation and to provide an update to field (d4-lot number).The device history record was unable to be reviewed for this device since the serial number was not provided.However, olympus only releases products to market that meet all manufacturing specifications and final product release criteria.Based on the results of the investigation, it is likely the phenomenon "gall stones were stuck in basket temporarily" and the phenomenon "broken lithotripter" was 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 described above 1, the basket was deformed and got stuck.3.When the basket was pulled further, the operating pipe broke at the brazing joint.As a result, stuck of the basket was resolved.However, the root cause of the phenomenon's could not be determined.The event can be 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 lithotripter.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 lithotripter bml-110a-1.A lithotripter 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 lithotripter 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.Lower the endoscope¿s forceps elevator when performing lithotripsy.If lithotripsy is performed when the elevator is not lowered, the scope or the instrument may break and/or the calculus may not be crushed.Also, the instrument with calculus engaged may not be removed from the body.Do not use this lithotripter bml-110a-1 for a calculus that is assumed impossible to be crushed by this lithotripter.The basket wire etc.May break and part of this lithotripter 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 lithotripter bml-110a-1.The operation of the mechanical lithotripter bml-110a-1 is based on the assumption that open surgery is possible as an emergency measure.If the calculus is too hard and the basket wire or mechanical lithotripter is damaged, lithotripsy cannot be continued.Use the bml-110a-1 with the understanding that its basket wire could become damaged and that open surgery may have to take place.If the calculus is too hard, it is possible that the damages shown below (see figures 5.1, 5.2 and 5.3) and other damages may have occurred.In addition, before using the bml-110a-1,thoroughly review its instruction manual and use it as instructed.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: 17476151
• MDR Text Key: 320631429
• Report Number: 9614641-2023-01106
• 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,User Facility,Company Representative,Distributor
• Reporter Occupation: Non-Healthcare Professional
• Type of Report: Initial,Followup
• Report Date: 09/22/2023

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Date FDA Received: 08/07/2023
• Is this an Adverse Event Report?: Yes
• Is this a Product Problem Report?: Yes
• Device Operator: Health Professional
• Device Model Number: BML-V437QR-30
• Device Lot Number: UNKNOWN
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 08/01/2023
• Was the Report Sent to FDA?: No
• Date Manufacturer Received: 09/01/2023
• Was Device Evaluated by Manufacturer?: Yes
• 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): Required Intervention