Blox™ SBT-546Recalls & reported problems
Boston Scientific Corporation · Endoscopic Bite Block with Elastic Cloth Strap · Class 1
All models of Blox (3)
Data updated Oct 16, 2026 from official FDA records · Editorial policy
- Adverse event reports
- 8
- Deaths reported
- 0
- Injuries reported
- 1
- Recalls naming it
- 0
Summary
The FDA's MAUDE database contains 8 adverse event reports that list this exact device (DI 00840253104816), received between Jul 2, 2019 and Jul 27, 2026 — classified as 1 injury, 7 malfunctions.
The most frequently reported specific device problem is “Material Separation” (4 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 16, 2026.
Reports received per month
Most reported problems
Device problems
- Material Separation4
- Adverse Event Without Identified Device or Use Problem2
- Device Contaminated During Manufacture or Shipping1
- Device Contamination with Chemical or Other Material1
Patient problems
- No Clinical Signs, Symptoms or Conditions5
- Hypersensitivity/Allergic reaction1
- No Consequences Or Impact To Patient1
- Tooth Fracture1
Recent adverse event reports
The 8 most recent of 8 reports, in the reporter's own words as published by the FDA.
MalfunctionJul 27, 2026Material Separation
It was reported to Boston Scientific Corporation that a Bite Blox was used during a procedure performed on (b)(6) 2026. During the procedure, the Bite Blox device broke during use. The procedure was completed using another of the same device. There were no patient complication as a result of this event.Attempts to obtain additional information regarding the circumstances surrounding this event have been unsuccessful to date. Should additional relevant details become available, a supplemental report will be submitted.
Patient problems: No Clinical Signs, Symptoms or Conditions
MAUDE report 50025249 ↗MalfunctionDec 11, 2025Material Separation; Material Separation
IT WAS REPORTED TO BOSTON SCIENTIFIC CORPORATION THAT A BITE BLOX WAS USED DURING A BRONCHOSCOPY PROCEDURE PERFORMED ON (B)(6) 2025. DURING THE PROCEDURE, THE BITE BLOX FRACTURED DUE TO EXCESSIVE JAW PRESSURE EXERTED BY THE PATIENT. THERE WERE NO PATIENT COMPLICATION AS A RESULT OF THIS EVENT.
Patient problems: No Clinical Signs, Symptoms or Conditions
MAUDE report 23778842 ↗MalfunctionMay 2, 2024Adverse Event Without Identified Device or Use Problem; Adverse Event Without Identified Device or Use Problem
THIS PRODUCT WAS RETURNED TO THE MANUFACTURER WITHOUT ANY REPORT OF PERFORMANCE ISSUES OR ADVERSE EFFECTS. THE RETURNED DEVICE WAS ANALYZED AND, BITE BLOX WAS DAMAGED/BROKEN. SEE BLOCK H10 FOR FULL INVESTIGATION DETAILS.
Patient problems: No Clinical Signs, Symptoms or Conditions
MAUDE report 19233617 ↗MalfunctionMar 8, 2024Material Separation; Material Separation
IT WAS REPORTED TO BOSTON SCIENTIFIC CORPORATION THAT A BITE BLOX WAS USED DURING AN ESOPHAGOGASTRODUODENOSCOPY (EGD) PROCEDURE IN THE UPPER ENDOSCOPY PERFORMED ON (B)(6) 2024. DURING THE MID-PROCEDURE, THE BITE BLOX BROKE, AND THE PATIENT CHIPPED A TOOTH. THE BROKEN ONE WAS REMOVED AND REPLACED WITH ANOTHER DEVICE. THERE WERE NO PATIENT COMPLICATION AS A RESULT OF THIS EVENT.
Patient problems: Tooth Fracture
MAUDE report 18867295 ↗MalfunctionJun 6, 2023Device Contamination with Chemical or Other Material; Device Contamination with Chemical or Other Material
IT WAS REPORTED TO BOSTON SCIENTIFIC CORPORATION THAT A BITEBLOX DEVICE WAS BEING PREPARED FOR USE IN A PROCEDURE ON (B)(6), 2023 UPON OPENING THE DEVICE PACKAGE DURING PREPARATION, A HAIR WAS NOTED INSIDE THE PACKAGE. THERE WERE NO PATIENT COMPLICATIONS REPORTED AS A RESULT OF THIS EVENT.
Patient problems: No Clinical Signs, Symptoms or Conditions
MAUDE report 17070645 ↗MalfunctionApr 27, 2021Material Separation; Material Separation
IT WAS REPORTED TO BOSTON SCIENTIFIC CORPORATION THAT A BLOX BITE BLOCK WAS USED DURING AN ESOPHAGOGASTRODUODENOSCOPY (EGD) PROCEDURE PERFORMED ON (B)(6) 2021 ACCORDING TO THE COMPLAINANT, DURING THE PROCEDURE, IT WAS NOTED THAT THE BITE BLOX WAS BROKEN INTO PIECES. NO DEBRIS WERE FOUND INSIDE THE PATIENT'S MOUTH AND THE BROKEN PIECES WAS RETRIEVED BY HAND. THE PROCEDURE WAS COMPLETED WITH THE ANOTHER BITE BLOX. THERE WERE NO PATIENT COMPLICATIONS REPORTED AS A RESULT OF THIS EVENT.
Patient problems: No Clinical Signs, Symptoms or Conditions
MAUDE report 11734154 ↗InjuryDec 2, 2019Adverse Event Without Identified Device or Use Problem; Adverse Event Without Identified Device or Use Problem
IT WAS REPORTED TO BOSTON SCIENTIFIC CORPORATION THAT A BITE BLOX WAS USED DURING AN ESOPHAGOGASTRODUODENOSCOPY (EGD) PROCEDURE PERFORMED ON (B)(6) 2019. ACCORDING TO THE COMPLAINANT, THE PATIENT HAD AN ALLERGIC REACTION TO THE ELASTIC OF THE BITE BLOX. REPORTEDLY, THE PATIENT APPEARS TO HAVE PRE-EXISTING ALLERGIES TO EITHER POLYESTER OR POLY URETHANE. THE PATIENT'S CONDITION AT THE CONCLUSION OF THE PROCEDURE WAS REPORTED TO BE FINE. ***ADDITIONAL INFORMATION AS OF 26DEC2019*** THE ALLERGIC REACTION WAS LIKE A RASH AROUND THE AREAS WHERE THE BITE BLOX CAME INTO CONTACT WITH THE SKIN.
Patient problems: Hypersensitivity/Allergic reaction
MAUDE report 9395795 ↗MalfunctionJul 2, 2019Device Contaminated During Manufacture or Shipping; Device Contaminated During Manufacture or Shipping
IT WAS REPORTED TO BOSTON SCIENTIFIC CORPORATION THAT A BITE BLOCK WAS USED FOR AN ENDOSCOPIC PROCEDURE, ON AN UNKNOWN DATE. ACCORDING TO THE COMPLAINANT, THERE WAS A HAIR INSIDE OF THE DEVICE PACKAGE. ANOTHER BITE BLOCK WAS USED TO COMPLETE THE PROCEDURE. THERE WAS NO SERIOUS INJURY NOR ADVERSE PATIENT EFFECTS REPORTED AS A RESULT OF THIS EVENT.
Patient problems: No Consequences Or Impact To Patient
MAUDE report 8754931 ↗
Other Endoscopic bite block devices
- cap-ONE YG-227TNihon Kohden Corporation · Endoscopic bite block1 recall0 reports
- Blox™ SBT-114Boston Scientific Corporation · Endoscopic bite block26 reports
- HUDSON RCI IPN049847Teleflex Incorporated · Endoscopic bite block11 reports
- NA 00712804US Endoscopy · Endoscopic bite block3 reports
- Blox™ SBT-321Boston Scientific Corporation · Endoscopic bite block2 reports
- Mouthpiece MB-142Olympus Medical Systems Corp. · Endoscopic Bite Block1 report
Sources and updates
- Device record: FDA GUDID, file dated Oct 13, 2026 · View this device in AccessGUDID ↗
- Adverse event reports: FDA MAUDE, file dated Oct 14, 2026 · each report above links to its original FDA record
- Recalls: FDA Medical Device Recalls, file dated Oct 16, 2026
- Page last rebuilt: Oct 16, 2026. Data downloaded through openFDA, which notes it is not validated for clinical or regulatory use.
How reports and recalls are matched · Editorial policy · Report an error on this page