Channel-opening cleaning brush MH-507Recalls & reported problems

Summary

The FDA's MAUDE database contains 22 adverse event reports that list this exact device (DI 04953170023187), received between Sep 1, 2020 and Oct 11, 2024 — classified as 22 malfunctions.

The most frequently reported specific device problem is “Break” (13 reports).

Reports come from manufacturers, hospitals and patients and are not verified by the FDA. A report does not prove the device caused the event, and counts can't be used to compare devices or estimate failure rates. What reports can and can't tell you · How this data works · Data updated Oct 18, 2026.

Most reported problems

Recent adverse event reports

The 22 most recent of 22 reports, in the reporter's own words as published by the FDA.

• MalfunctionOct 11, 2024Device Reprocessing Problem; Device Reprocessing Problem

  IT WAS REPORTED THAT THE CHANNEL-OPENING CLEANING BRUSH WAS INCORRECTLY REPROCESSED. THE FACILITY WAS INTERVIEWED BY THE OLYMPUS REPRESENTATIVES AND STATED DEVIATION FROM THE REPROCESSING GUIDELINES. THE ISSUE OCCURRED DURING AN UNKNOWN EVENT AND PROCEDURE. THERE WERE NO REPORTS OF PATIENT HARM.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 20434359 ↗
• MalfunctionAug 25, 2022Device Reprocessing Problem; Device Reprocessing Problem

  IT WAS REPORTED THAT WHEN THE FACILITY MEDICAL STAFF WAS CLEANING THE AIR/WATER SUPPLY BUTTON, SUCTION BUTTON WITH MH-507 (CLEANING BRUSH), AND THE BRUSH COULD NOT PASS THROUGH THE HOLE OF THE AIR/WATER SUPPLY BUTTON. THE OLYMPUS REPRESENTATIVE THEN INFORMED THE CUSTOMER THE CORRECT REPROCESSING PROCEDURE BY USING THE BW-20T CHANNEL CLEANING BRUSH. THE ISSUE FOUND DURING REPROCESSING AND THERE WAS NO PATIENT HARM, NO USER INJURY REPORTED DUE TO THE EVENT. THIS EVENT INCLUDES THREE (3) REPORTS: REPORT WITH PATIENT IDENTIFIER (B)(6) (MH-438- AIR/WATER VALVE (BUTTON). REPORT WITH PATIENT IDENTIFIER (B)(6) (MH-443- SUCTION VALVE(BUTTON). REPORT WITH PATIENT IDENTIFIER (B)(6) (MH-507-CHANNEL PORT CLEANING BRUSH). THIS REPORT IS FOR REPORT WITH PATIENT IDENTIFIER (B)(6) (MH-507-CHANNEL PORT CLEANING BRUSH).

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 15291225 ↗
• MalfunctionJan 24, 2022Break; Break

  OLYMPUS MEDICAL SYSTEMS CORP. (OMSC) WAS INFORMED FROM THE USER THAT IT WAS FOND THE BRISTLES OF THE SUBJECT DEVICE USED IN ABOUT 20 CASES WERE LOOSENED AND FELL OFF DURING THE REPROCESSING. THERE WAS NO PATIENT INJURY ASSOCIATED WITH THIS REPORT.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 13331937 ↗
• MalfunctionAug 3, 2021Material Separation; Material Separation

  IT WAS REPORTED TO OLYMPUS THAT DURING REPROCESSING, THE CHANNEL-OPENING CLEANING BRUSH LOST BRISTLES. WHEN REMOVING THE BRUSH FROM THE PACKAGING, THE BRISTLES WERE MESSY AND A LITTLE LOOSE. THE BRUSH WAS PASSED THROUGH THE EQUIPMENT, AND IT WAS DESTROYED. ALL OF THE BRISTLES WERE STUCK IN THE EQUIPMENT. THE BRUSH WAS ONE (1) OF FIVE (5) IN WHICH THE SAME ISSUE OCCURRED. FOUR (4) OF THE FIVE (5) BRUSHES WERE DISCARDED. NONE OF THE BRUSHES WENT THROUGH STERILIZATION REPROCESSING, BUT RATHER AT THE FIRST USE, THE BRISTLES CAME OUT. THE STERILIZATION STAFF KNEW HOW TO USE THE BRUSH. IT WAS PURCHASED FOR A LONG TIME. THERE WAS NO NEW STAFF OR CHANGES IN THE PROCESS. THE INTENDED PROCEDURE WAS COMPLETED. THE SAME DEVICE WAS NOT USED TO COMPLETE THE PROCEDURE. NO OTHER EQUIPMENT WAS REPLACED. NO PATIENT HARM REPORTED. THIS COMPLAINT IS RELATED TO PATIENT IDENTIFIERS: (B)(6) (MODEL # MH-507, SERIAL NUMBER: 0YR). (B)(6) (MODEL # MH-507, SERIAL NUMBER: UNKNOWN). (B)(6) (MODEL # MH-507, SERIAL NUMBER: UNKNOWN). (B)(6) (MODEL # MH-507, SERIAL NUMBER: UNKNOWN).

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 12268669 ↗
• MalfunctionAug 2, 2021Material Separation; Material Separation

  IT WAS REPORTED TO OLYMPUS THAT DURING REPROCESSING, THE CHANNEL-OPENING CLEANING BRUSH LOST BRISTLES. WHEN REMOVING THE BRUSH FROM THE PACKAGING, THE BRISTLES WERE MESSY AND A LITTLE LOOSE. THE BRUSH WAS PASSED THROUGH THE EQUIPMENT, AND IT WAS DESTROYED. ALL OF THE BRISTLES WERE STUCK IN THE EQUIPMENT. THE BRUSH WAS ONE (1) OF FIVE (5) IN WHICH THE SAME ISSUE OCCURRED. FOUR (4) OF THE FIVE (5) BRUSHES WERE DISCARDED. NONE OF THE BRUSHES WENT THROUGH STERILIZATION REPROCESSING, BUT RATHER AT THE FIRST USE, THE BRISTLES CAME OUT. THE STERILIZATION STAFF KNEW HOW TO USE THE BRUSH. IT WAS PURCHASED FOR A LONG TIME. THERE WAS NO NEW STAFF OR CHANGES IN THE PROCESS. THE INTENDED PROCEDURE WAS COMPLETED. THE SAME DEVICE WAS NOT USED TO COMPLETE THE PROCEDURE. NO OTHER EQUIPMENT WAS REPLACED. NO PATIENT HARM REPORTED. THIS COMPLAINT IS RELATED TO PATIENT IDENTIFIERS: (B)(6) (MODEL # MH-507, SERIAL NUMBER: (B)(4)). (B)(6) (MODEL # MH-507, SERIAL NUMBER: UNKNOWN). (B)(6) (MODEL # MH-507, SERIAL NUMBER: UNKNOWN). (B)(6) (MODEL # MH-507, SERIAL NUMBER: UNKNOWN).

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 12263570 ↗
• MalfunctionAug 2, 2021Material Separation; Material Separation

  IT WAS REPORTED TO OLYMPUS THAT DURING REPROCESSING, THE CHANNEL-OPENING CLEANING BRUSH LOST BRISTLES. WHEN REMOVING THE BRUSH FROM THE PACKAGING, THE BRISTLES WERE MESSY AND A LITTLE LOOSE. THE BRUSH WAS PASSED THROUGH THE EQUIPMENT, AND IT WAS DESTROYED. ALL OF THE BRISTLES WERE STUCK IN THE EQUIPMENT. THE BRUSH WAS ONE (1) OF FIVE (5) IN WHICH THE SAME ISSUE OCCURRED. FOUR (4) OF THE FIVE (5) BRUSHES WERE DISCARDED. NONE OF THE BRUSHES WENT THROUGH STERILIZATION REPROCESSING, BUT RATHER AT THE FIRST USE, THE BRISTLES CAME OUT. THE STERILIZATION STAFF KNEW HOW TO USE THE BRUSH. IT WAS PURCHASED FOR A LONG TIME. THERE WAS NO NEW STAFF OR CHANGES IN THE PROCESS. THE INTENDED PROCEDURE WAS COMPLETED. THE SAME DEVICE WAS NOT USED TO COMPLETE THE PROCEDURE. NO OTHER EQUIPMENT WAS REPLACED. NO PATIENT HARM REPORTED. THIS COMPLAINT IS RELATED TO PATIENT IDENTIFIERS: (B)(6) (MODEL # MH-507, SERIAL NUMBER: (B)(4)), (B)(6) (MODEL # MH-507, SERIAL NUMBER: UNKNOWN), (B)(6) (MODEL # MH-507, SERIAL NUMBER: UNKNOWN), (B)(6) (MODEL # MH-507, SERIAL NUMBER: UNKNOWN).

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 12263557 ↗
• MalfunctionAug 2, 2021Material Separation; Material Separation

  IT WAS REPORTED TO OLYMPUS THAT DURING REPROCESSING, THE CHANNEL-OPENING CLEANING BRUSH LOST BRISTLES. WHEN REMOVING THE BRUSH FROM THE PACKAGING, THE BRISTLES WERE MESSY AND A LITTLE LOOSE. THE BRUSH WAS PASSED THROUGH THE EQUIPMENT, AND IT WAS DESTROYED. ALL OF THE BRISTLES WERE STUCK IN THE EQUIPMENT. THE BRUSH WAS ONE (1) OF FIVE (5) IN WHICH THE SAME ISSUE OCCURRED. FOUR (4) OF THE FIVE (5) BRUSHES WERE DISCARDED. NONE OF THE BRUSHES WENT THROUGH STERILIZATION REPROCESSING, BUT RATHER AT THE FIRST USE, THE BRISTLES CAME OUT. THE STERILIZATION STAFF KNEW HOW TO USE THE BRUSH. IT WAS PURCHASED FOR A LONG TIME. THERE WAS NO NEW STAFF OR CHANGES IN THE PROCESS. THE INTENDED PROCEDURE WAS COMPLETED. THE SAME DEVICE WAS NOT USED TO COMPLETE THE PROCEDURE. NO OTHER EQUIPMENT WAS REPLACED. NO PATIENT HARM REPORTED. THIS COMPLAINT IS RELATED TO PATIENT IDENTIFIERS: (B)(6) (MODEL # MH-507, SERIAL NUMBER: (B)(4)). (B)(6) (MODEL # MH-507, SERIAL NUMBER: (B)(4)). (B)(6) (MODEL # MH-507, SERIAL NUMBER: (B)(4)). (B)(6) (MODEL # MH-507, SERIAL NUMBER: (B)(4)).

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 12263540 ↗
• MalfunctionAug 2, 2021Material Separation; Material Separation

  IT WAS REPORTED TO OLYMPUS THAT DURING REPROCESSING, THE CHANNEL-OPENING CLEANING BRUSH LOST BRISTLES. THE INTENDED PROCEDURE WAS COMPLETED. THE SAME DEVICE WAS NOT USED TO COMPLETE THE PROCEDURE. NO OTHER EQUIPMENT WAS REPLACED. NO PATIENT HARM REPORTED. THIS COMPLAINT IS RELATED TO PATIENT IDENTIFIER: (B)(6); (MODEL # MH-507, SERIAL NUMBER: (B)(4)).

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 12263514 ↗
• MalfunctionAug 2, 2021Material Separation; Material Separation

  IT WAS REPORTED TO OLYMPUS THAT DURING REPROCESSING, THE CHANNEL-OPENING CLEANING BRUSH LOST BRISTLES. THE INTENDED PROCEDURE WAS COMPLETED. THE SAME DEVICE WAS NOT USED TO COMPLETE THE PROCEDURE. NO OTHER EQUIPMENT WAS REPLACED. NO PATIENT HARM REPORTED. THIS COMPLAINT IS RELATED TO PATIENT IDENTIFIER: (B)(6) (MODEL # MH-507, SERIAL NUMBER: (B)(4)).

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 12263465 ↗
• MalfunctionJul 13, 2021Material Separation; Material Separation

  IT WAS REPORTED TO OLYMPUS THAT DURING REPROCESSING, THE CHANNEL-OPENING CLEANING BRUSH LOST BRISTLES. WHEN REMOVING THE BRUSH FROM THE PACKAGING, THE BRISTLES WERE MESSY AND A LITTLE LOOSE. THE BRUSH WAS PASSED THROUGH THE EQUIPMENT, AND IT WAS DESTROYED. ALL OF THE BRISTLES WERE STUCK IN THE EQUIPMENT. THE BRUSH WAS ONE (1) OF FIVE (5) IN WHICH THE SAME ISSUE OCCURRED. FOUR (4) OF THE FIVE (5) BRUSHES WERE DISCARDED. NONE OF THE BRUSHES WENT THROUGH STERILIZATION REPROCESSING, BUT RATHER AT THE FIRST USE, THE BRISTLES CAME OUT. THE STERILIZATION STAFF KNEW HOW TO USE THE BRUSH. IT WAS PURCHASED FOR A LONG TIME. THERE WAS NO NEW STAFF OR CHANGES IN THE PROCESS. THE INTENDED PROCEDURE WAS COMPLETED. THE SAME DEVICE WAS NOT USED TO COMPLETE THE PROCEDURE. NO OTHER EQUIPMENT WAS REPLACED. NO PATIENT HARM REPORTED. THIS COMPLAINT IS RELATED TO PATIENT IDENTIFIERS: (B)(6), (MODEL # MH-507, SERIAL NUMBER: UNKNOWN). (B)(6), (MODEL # MH-507, SERIAL NUMBER: UNKNOWN). (B)(6), (MODEL # MH-507, SERIAL NUMBER: UNKNOWN). (B)(6), (MODEL # MH-507, SERIAL NUMBER: UNKNOWN).

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 12162344 ↗
• MalfunctionMar 1, 2021Break; Break

  OLYMPUS MEDICAL SYSTEMS CORP. (OMSC) WAS INFORMED THAT THE CUSTOMER CLAIMED THE BRISTLES OF THE DEVICE FELL OUT EASILY. OTHER DETAILED INFORMATION WAS NOT PROVIDED. THERE WAS NO REPORT OF PATIENT INJURY ASSOCIATED WITH THE EVENT.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 11391155 ↗
• MalfunctionMar 1, 2021Break; Break

  OLYMPUS MEDICAL SYSTEMS CORP. (OMSC) WAS INFORMED FROM THE FACILITY THAT DURING PREPARATION FOR USE, IT WAS FOUND THAT THE BRUSH BRISTLES WERE MISSING VERTICALLY IN TWO ROWS (BOTH SIDES). THE SUBJECT DEVICE WAS BRAND-NEW PRODUCT. THERE WAS NO REPORT OF PATIENT INJURY ASSOCIATED WITH THE EVENT.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 11391154 ↗
• MalfunctionMar 1, 2021Break; Break

  OLYMPUS MEDICAL SYSTEMS CORP. (OMSC) WAS INFORMED THAT THE CUSTOMER CLAIMED THE BRISTLES OF THE DEVICE FELL OUT EASILY. OTHER DETAILED INFORMATION WAS NOT PROVIDED. THERE WAS NO REPORT OF PATIENT INJURY ASSOCIATED WITH THE EVENT.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 11391153 ↗
• MalfunctionMar 1, 2021Break; Break

  OLYMPUS MEDICAL SYSTEMS CORP. (OMSC) WAS INFORMED THAT THE CUSTOMER CLAIMED THE BRISTLES OF THE DEVICE FELL OUT EASILY. OTHER DETAILED INFORMATION WAS NOT PROVIDED. THERE WAS NO REPORT OF PATIENT INJURY ASSOCIATED WITH THE EVENT.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 11391149 ↗
• MalfunctionMar 1, 2021Break; Break

  OLYMPUS MEDICAL SYSTEMS CORP. (OMSC) WAS INFORMED THAT THE CUSTOMER CLAIMED THE BRISTLES OF THE DEVICE FELL OUT EASILY. OTHER DETAILED INFORMATION WAS NOT PROVIDED. THERE WAS NO REPORT OF PATIENT INJURY ASSOCIATED WITH THE EVENT.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 11391133 ↗
• MalfunctionFeb 28, 2021Break; Break

  OLYMPUS MEDICAL SYSTEMS CORP. (OMSC) WAS INFORMED FROM THE FACILITY THAT DURING PREPARATION FOR USE, IT WAS FOUND THAT THE BRUSH BRISTLES WERE MISSING VERTICALLY IN TWO ROWS (BOTH SIDES). THE SUBJECT DEVICE WAS BRAND-NEW PRODUCT. THERE WAS NO REPORT OF PATIENT INJURY ASSOCIATED WITH THE EVENT.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 11390868 ↗
• MalfunctionFeb 24, 2021Break; Break

  OLYMPUS MEDICAL SYSTEMS CORP. (OMSC) WAS INFORMED THAT THE CUSTOMER CLAIMED THE BRISTLES OF THE DEVICE FELL OUT EASILY. OTHER DETAILED INFORMATION WAS NOT PROVIDED. THERE WAS NO REPORT OF PATIENT INJURY ASSOCIATED WITH THE EVENT.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 11376811 ↗
• MalfunctionNov 24, 2020Break; Break

  A USER REPORTED THAT A PART OF THE BRISTLES ON THE TWO MH-507S FELL OFF DURING THE REPROCESSING. THE USER REPLACED THESE MH-507S TO ANOTHER BRUSH AND COMPLETED THE REPROCESSING. THERE WAS NO REPORT OF PATIENT INJURY ASSOCIATED WITH THIS EVENT. THIS MDR IS SUBMITTED FOR THE SECOND OF THE TWO MH-507S.

  Patient problems: No Consequences Or Impact To Patient

  MAUDE report 10894071 ↗
• MalfunctionNov 24, 2020Break; Break

  A USER REPORTED THAT A PART OF THE BRISTLES ON THE TWO MH-507S FELL OFF DURING THE REPROCESSING. THE USER REPLACED THESE MH-507S TO ANOTHER BRUSH AND COMPLETED THE REPROCESSING. THERE WAS NO REPORT OF PATIENT INJURY ASSOCIATED WITH THIS EVENT. THIS MDR IS SUBMITTED FOR THE FIRST OF THE TWO MH-507S.

  Patient problems: No Consequences Or Impact To Patient

  MAUDE report 10894069 ↗
• MalfunctionSep 3, 2020Break; Break

  OLYMPUS MEDICAL SYSTEMS CORP. (OMSC) WAS INFORMED THAT THE CUSTOMER CLAIMED THE BRISTLES OF THE DEVICE FELL OUT EASILY. THE CUSTOMER USED THE DEVICE LESS THAN 10 TIMES. OTHER DETAILED INFORMATION WAS NOT PROVIDED. THERE WAS NO REPORT OF PATIENT INJURY ASSOCIATED WITH THE EVENT.

  Patient problems: No Consequences Or Impact To Patient

  MAUDE report 10486928 ↗
• MalfunctionSep 2, 2020Break; Break

  OLYMPUS MEDICAL SYSTEMS CORP. (OMSC) WAS INFORMED THAT DURING A PREPARATION FOR THE REPROCESSING, WHEN THE USER USED THE SUBJECT DEVICE FOR FIRST TIME, THE USER SEEMED THAT THE DISTAL END SIDE OF THE BRUSH HAD LESS BRISTLES THAN USUAL AND THE SHAFT WAS EXPOSED. THEREFORE THE USER STOPPED USING THE SUBJECT DEVICE. THERE WAS NO REPORT OF PATIENT INJURY ASSOCIATED WITH THE EVENT.

  Patient problems: No Consequences Or Impact To Patient

  MAUDE report 10481234 ↗
• MalfunctionSep 1, 2020Break; Break

  OLYMPUS MEDICAL SYSTEMS CORP. (OMSC) WAS INFORMED THAT DURING THE REPROCESS, THE USER OPENED THE PACKAGE OF THE SUBJECT DEVICE, THE USER SEEMED THAT THE BRISTLES OF THE SUBJECT DEVICE WAS POSITIONED TO THE BRUSH HANDLE SIDE THAN USUAL. THEREFORE THE USER STOPPED USING THE SUBJECT DEVICE. THERE WAS NO REPORT OF PATIENT INJURY ASSOCIATED WITH THE EVENT.

  Patient problems: No Consequences Or Impact To Patient

  MAUDE report 10476230 ↗