MAUDE Adverse Event Report: AOMORI OLYMPUS CO., LTD. SINGLE USE LIGATING DEVICE

Model Number HX-400U-30

Device Problem Failure to Disconnect (2541)

Patient Problem Gastrointestinal Hemorrhage (4476)

Event Date 06/09/2023

Event Type  Injury  

Manufacturer Narrative

E1: the full establishment name: (b)(6).The device referenced in this report was not returned to olympus for evaluation.Since the device lot number was unknown, the device history record (dhr) for the one year prior to the notification date was inspected.A review of the device history record found no deviations could have caused or contributed to the reported issue.A definitive root cause could not be identified.Based on the results of investigation the likely cause of malfunction was determined to be the following: the loop was surrounding the body tissue, and it was temporarily ligated by pulling the slider.The tube sheath was pushed out, and the distal end of the coil sheath went into the tube sheath.An attempt was made to detach the loop in the state of above description 2).Therefore, the loop detached from the hook in the tube.While the hook was extending from the coil sheath, the loop moved towards the proximal side and went into the coil sheath.The hook was pulled.This caused the hook and the loop to retract into the coil sheath together.As a result, the loop and the hook got stuck inside the coil and could not move.Since the loop and the hook got stuck together inside the coil, the loop did not detach when the slider was pulled.The sheath was bent near the handle.The operating wire could not move because sliding resistance between the sheath and the operating wire increased.The operating pipe deformed or broke because the slider was forcefully operated.Due to the above, the loop could not detach from the hook.The issue is addressed in the instructions for use (ifu) : the instruction manual (drawing number: gk8332, revision number: 05) contains the following warnings.Do not strike or crush the coil sheath during operation.Doing so can damage the distal end of the coil sheath, which could make it impossible to detach the loop after ligation.In this case, refer to section 12, ¿emergency treatment¿ and as shown ¿equipment to be used in an emergency¿ on page 3 in this manual.Do not remove the loop from the hook while the coil sheath is not extended from the tube sheath.Otherwise, the loop may be tangled with the hook and become impossible to remove.In this case, refer to section 12, ¿emergency treatment¿ and as shown ¿equipment to be used in an emergency¿ on page 3 in this manual.Do not hold the loop with the distal end of the tube sheath while the loop is surrounding the tissue.Otherwise, when the tissue is ligated, the loop may be detached from the hook in the tube sheath and tangled with the hook.That may make the loop impossible to remove.In this case, refer to section 12, ¿emergency treatment¿ and as shown ¿equipment to be used in an emergency¿ on page 3 in this manual.Never use excessive force to operate the instrument.This could damage the instrument.Straighten out the portion of the instrument that extends from the biopsy valve.Olympus will continue to monitor the field performance of this device.

Event Description

The customer reported to olympus that during a therapeutic polypectomy the loop did not come off the sheath when using single use ligating device.The device was inspected prior to use and no abnormality was found.Additional intervention was undertaken wherein the insulated tip (it) knife was used to clip the lower part of the ligature between the loop and clip which caused the large intestinal mucosal bleeding (non-profuse) at the polypectomy site.As a result, medical intervention was undertaken wherein the bleeding was stopped with hemostatic forceps and the procedure was completed with the same device with a 30¿40-minute delay.There were no reports of any other problems post bleeding.The patient has been reported to be discharged.

• Brand Name: SINGLE USE LIGATING DEVICE
• Type of Device: SINGLE USE LIGATING DEVICE
• 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: 17373917
• MDR Text Key: 319668506
• Report Number: 9614641-2023-01018
• Device Sequence Number: 1
• Product Code: FHN
• UDI-Device Identifier: 04953170368615
• UDI-Public: 04953170368615
• 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
• Reporter Occupation: Nurse
• Type of Report: Initial
• Report Date: 07/21/2023

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Date FDA Received: 07/21/2023
• Is this an Adverse Event Report?: Yes
• Is this a Product Problem Report?: Yes
• Device Operator: Health Professional
• Device Model Number: HX-400U-30
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Was the Report Sent to FDA?: No
• Date Manufacturer Received: 06/30/2023
• 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): Required Intervention