MAUDE Adverse Event Report: OLYMPUS MEDICAL SYSTEMS CORP. SINGLE USE ELECTROSURGICAL KNIFE KD-612

Model Number	KD-612U
Medical Device Problem Code	Adverse Event Without Identified Device or Use Problem (2993)
Health Effect - Clinical Codes	Perforation (2001); Unspecified Respiratory Problem (4464)
Date of Event	07/17/2020
Type of Reportable Event	Serious Injury
Additional Manufacturer Narrative
The suspect device has not been returned to olympus for evaluation.The investigation is in process.Once the investigation has been completed, a supplemental report will be submitted with device evaluation results.
Event or Problem Description
Olympus reviewed the following literature titled: "management of gastrointestinal subepithelial tumors with endoscopic resection."     this study was conducted to explain the management of gastrointestinal subepithelial tumors (gi sets) and resecting gi sets with endoscopic submucosal dissection (esd) and submucosal tunneling endoscopic resection (ster) to explore the efficacy of this technique.A total of 39 patients were involved in this study.Out of them 36 were resected by esd and 3 were resected by ster.The surgical methods esd and ster were conducted using the device endoscope gifq260j, distal hood d-201-11 304, electrocoagulation unit esg 100, dual knife, dual knife j, it knife nano and other devices.The mean tumor size was 16.8 ± 1.3 mm.The overall procedural time was 37.9 ± 4.6 minutes.Complications like perforations were observed in three patients.The study concluded that esd and ster can be an effective modality for the diagnosis and management of gi sets in a selected group of patients.The authors reported mild pain after esd, unspecified bleeding and unspecified infection.The reportable events identified by the author are: perforation -(n=3).Subcutaneous emphysema -(n=unknown).Multiple olympus devices were used in this study and the authors did not specify which device was being used at the time of the adverse events.Therefore, all will be reported as follows: patient identifier (b)(6): gif-q260j, gastroscope.Patient identifier (b)(6): d-201-11304, distal attachment.Patient identifier (b)(6): esg-100 (wb991046).Patient identifier (b)(6): kd-612u, it knife nano.Patient identifier (b)(6): kd-655u, dual knife j.This report is 4 of 5 for patient identifier (b)(6): kd-612u, it knife nano.
Additional Manufacturer Narrative
This report is being supplemented to provide additional information based on the legal manufacturer's final investigation and from the author.New information was added to the following fields: b3, b5, h6, h10.The device history record was unable to be reviewed for this device since the lot 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, the relationship between the device and the adverse event cannot be confirmed.There was no complaint reported on the subject device.There is no evidence of an olympus device malfunction.Olympus will continue to monitor field performance for this device.
Event or Problem Description
Three attempts were performed to obtain additional information, but no response was received from the author.

• Brand Name: SINGLE USE ELECTROSURGICAL KNIFE KD-612
• Common Device Name: SINGLE USE ELECTROSURGICAL KNIFE
• Manufacturer (Section D): OLYMPUS MEDICAL SYSTEMS CORP.; 2951 ishikawa-cho; hachioji-shi, tokyo-to 192-8 507; JA 192-8507
• Manufacturer Contact: kazutaka matsumoto ; 2951 ishikawa-cho; hachioji-shi, tokyo-to 192-8-507 ; JA 192-8507 ; 426425177
• MDR Report Key: 14471963
• Report Number: 8010047-2022-08741
• Device Sequence Number: 4569441
• Product Code: KNS
• UDI-Device Identifier: 04953170325939
• UDI-Public: 04953170325939
• Combination Product (Y/N): N
• Initial Reporter Country: TW
• PMA/510(K) Number: K092309
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Other,Foreign,Literature,Health Professional,Company Representative
• Initial Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date (Section B): 07/08/2022

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: Yes
• Is this a Product Problem Report?: No
• Operator of Device: Health Professional
• Device Model Number: KD-612U
• Device Lot Number: UNKNOWN(LITERATURE)
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Was the Report Sent to FDA?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 04/24/2022
• Supplement Date Received by Manufacturer: 06/09/2022
• Initial Report FDA Received Date: 05/23/2022
• Supplement Report FDA Received Date: 07/08/2022
• Was Device Evaluated by Manufacturer? (Y/N): Device Not Returned to Manufacturer
• Is the Device Labeled for Single Use? (Y/N): Yes
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Usage of Device: Initial
• Patient Sequence Number: 1
• Concomitant Medical Products and Therapy/Usage Dates: LOT UNKNOWN: D-201-11304; SERIAL UNKNOWN:GIF-Q260J,WB991046
• Outcome Attributed to Adverse Event: Other
• Patient Sex: Unknown