MAUDE Adverse Event Report: OLYMPUS MEDICAL SYSTEMS CORP. SINGLE USE ELECTROSURGICAL SNARE SD-400

Model Number SD-400U-10

Device Problem Adverse Event Without Identified Device or Use Problem (2993)

Patient Problem Hemorrhage/Bleeding (1888)

Event Type  Injury  

Event Description

It is reported in the literature titled ¿comparison of post-polypectomy bleeding events between cold snare polypectomy and hot snare polypectomy for small colorectal lesions: a large-scale propensity score-matched analysis," patients experienced post-polypectomy bleeding events after procedures using snaremaster (sd-210l-10) or snaremaster plus (sd-400u-10).Cold snare polypectomy (csp) group: seven patient experienced post-polypectomy bleeding.All patients in the csp group were treated endoscopically with no transfusions needed.Case with patient identifier (b)(6) reports patient 1/7- (sd-210l-10).Case with patient identifier (b)(6) reports patient 2/7- (sd-210l-10).Case with patient identifier (b)(6) reports patient 3/7- (sd-400u-10).Case with patient identifier (b)(6) reports patient 4/7- (sd-210l-10).Case with patient identifier (b)(6) reports patient 5/7- (sd-400u-10).Case with patient identifier (b)(6) reports patient 6/7- (sd-400u-10).Case with patient identifier (b)(6) reports patient 7/7- (sd-400u-10).Hot snare polypectomy (hsp) group: case with patient identifier (b)(6)-reports the hsp group patients experiencing ppb after procedures using: sd-210l-10.Case with patient identifier (b)(6)- reports the hsp group patients experiencing ppb after procedures using: sd-400u-10.Case with patient identifier (b)(6) reports the patients in hsp group requiring endoscopic clipping with ez-clip (hx-110lr) post procedure.Background and aims: cold snare polypectomy (csp), a safe procedure for removing colon polyps, has a low prevalence of post-polypectomy bleeding (ppb).Previous studies have failed to demonstrate differences in ppb rates between csp and hot snare polypectomy (hsp), possibly because of their small sample sizes.This study analyzed ppb rates after csp and hsp.Method: retrospective analysis of colorectal lesions (diameter <10 mm) treated using endoscopic resection at our institution between january 2015 and december 2019.Resections were performed using csp or hsp, depending on the endoscopist¿s preference.Endoscopic and histological findings were recorded in the endoscopic database at our institution.Propensity score (ps) matching was performed to match patient age, lesion size, macroscopic features, location of the lesions, and antithrombotic agent use.The csp and hsp groups were compared to determine the adverse event (ppb) rates.Results: the csp and hsp groups included 12,928 and 2,408 lesions (total of 5,371 patients), respectively.The univariate analysis revealed that the overall prevalence of ppb after hsp was higher than that after csp (odds ratio [or], 5.39; 95% confidence interval [ci], 2.50¿11.60).After ps matching (2,135 lesions/group), the prevalence of ppb after hsp remained higher than that after csp (or, 6.0; 95% ci, 1.34¿26.8).Conclusions: for colorectal lesions <10 mm in diameter, the risk of ppb after csp is significantly lower than that after hsp, after ps matching.Csp for lesions <10 mm could be safely performed compared with hsp.In this case, the patient had a csp of a 7mm polyp in the ascending colon using a thin/braided snare master.The patient had a history of antithrombotic therapy (aspirin and prasugrel).The patient experienced ppb which was treated endoscopically during the procedure.No post procedure clipping, or transfusion were required.There is no report of olympus device malfunction described in this study.

Manufacturer Narrative

The device referenced in this report has not been returned to olympus for evaluation.The investigation is ongoing.The definitive cause of the user¿s experience cannot be determined at this time.This report will be updated upon completion of the investigation or upon receipt of additional relevant information.

Manufacturer Narrative

This report is being submitted to provide investigation findings and corrected information.New information is reported in h6 and h10.Corrected information is reported in e1.The device referenced in this report was not returned to olympus for physical evaluation.There was no report of olympus device malfunction described in this literature.The lot number was not provided; therefore, a device history record could not be reviewed.It should be noted however, olympus does not ship any device that doesn¿t meet all design and safety specifications.The definitive cause of the reported event could not be conclusively identified.

• Brand Name: SINGLE USE ELECTROSURGICAL SNARE SD-400
• Type of Device: ELECTROSURGICAL SNARE
• 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: 13953595
• MDR Text Key: 293612754
• Report Number: 8010047-2022-05357
• Device Sequence Number: 1
• Product Code: FDI
• UDI-Device Identifier: 04953170396694
• UDI-Public: 04953170396694
• Combination Product (y/n): N
• Reporter Country Code: JA
• PMA/PMN Number: K172734
• Number of Events Reported: 1
• Summary Report (Y/N): N
• Report Source: Manufacturer
• Source Type: Other,Foreign,Study,Literature,Health Professional
• Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date: 05/03/2022

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Date FDA Received: 03/30/2022
• Is this an Adverse Event Report?: Yes
• Is this a Product Problem Report?: No
• Device Operator: Health Professional
• Device Model Number: SD-400U-10
• 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
• Date Manufacturer Received: 04/07/2022
• 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): Other; Required Intervention
• Patient Age: 81 YR
• Patient Sex: Female