AcusnareRecalls & reported problems across all models

We found 14 models of Acusnare by Cook Incorporated in the FDA's device registry (GUDID). Together they are named in 272 adverse event reports in the FDA's MAUDE database, received between May 13, 2016 and Sep 29, 2026 — classified as 23 injuries, 249 malfunctions.

The most frequently reported specific device problem is “Retraction Problem” (70 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. Widely used products collect more reports, so totals can't be used to compare products or estimate failure rates. Only reports that name a model's exact device identifier are counted. What reports can and can't tell you · How this data works

Most reported Acusnare problems

Acusnare models

14 models, most reported first. Each model has its own page with its reports, recalls and device details.

• Acusnare G22649

  Unit, electrosurgical, endoscopic (with or without accessories)
  39 reports
• Acusnare G22631

  Unit, electrosurgical, endoscopic (with or without accessories)
  38 reports
• Acusnare G22647

  Unit, electrosurgical, endoscopic (with or without accessories)
  37 reports
• Acusnare G22629

  Unit, electrosurgical, endoscopic (with or without accessories)
  35 reports
• Acusnare G22632

  Unit, electrosurgical, endoscopic (with or without accessories)
  21 reports
• Acusnare G22633

  Unit, electrosurgical, endoscopic (with or without accessories)
  20 reports
• Acusnare G22700

  Unit, electrosurgical, endoscopic (with or without accessories)
  19 reports
• Acusnare G22701

  Unit, electrosurgical, endoscopic (with or without accessories)
  16 reports
• Acusnare G22630

  Unit, electrosurgical, endoscopic (with or without accessories)
  14 reports
• Acusnare G22703

  Unit, electrosurgical, endoscopic (with or without accessories)
  13 reports
• Acusnare G22704

  Unit, electrosurgical, endoscopic (with or without accessories)
  12 reports
• Acusnare G22702

  Unit, electrosurgical, endoscopic (with or without accessories)
  6 reports
• Acusnare G22634

  Unit, electrosurgical, endoscopic (with or without accessories)
  1 report
• Acusnare G22897

  Unit, electrosurgical, endoscopic (with or without accessories)
  1 report

Recent Acusnare adverse event reports

The 15 most recent reports across all models, in the reporter's own words as published by the FDA.

• MalfunctionSep 29, 2026Retraction Problem

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 50941373 ↗
• MalfunctionSep 11, 2026Difficult to Open or Close

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 50738189 ↗
• MalfunctionSep 2, 2026Failure to Conduct

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 50565084 ↗
• MalfunctionAug 16, 2026Off-Label Use

  During a polypectomy procedure, the physician used a Cook ACUSNARE POLYPECTOMY SNARE. The snare was attempted to be used as a cold snare "[off label use]". It was reported that when the polyp was to be removed by the snare, it was found that the snare could not be retracted to remove the polyp. Therefore, use removed the device and replaced it for treatment.A section of the device did not remain inside the patient¿s body. The patient did not require any additional procedures due to this occurrence. According to the initial reporter, the patient experienced redness and swelling.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 50267602 ↗
• MalfunctionAug 14, 2026Failure to Cut

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 50260223 ↗
• MalfunctionAug 14, 2026Failure to Cut

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 50260221 ↗
• MalfunctionJun 8, 2026Difficult to Fold, Unfold or Collapse; Failure to Cut

  DURING AN ENDOSCOPIC PROCEDURE, THE PHYSICIAN USED AN ACUSNARE POLYPECTOMY SNARE. IT WAS REPORTED THAT THE SNARE WOULD NOT CUT. OUR ATTEMPTS TO COLLECT ADDITIONAL INFORMATION REGARDING PATIENT OUTCOME WERE UNSUCCESSFUL. WHILE THE COMPLAINANT DID NOT SPECIFY IF THE PATIENT EXPERIENCED ANY ADVERSE EFFECTS OR REQUIRED ADDITIONAL MEDICAL PROCEDURES DUE TO THIS EVENT, THE INFORMATION ABLE TO BE COLLECTED DOES NOT REASONABLY SUGGEST THE PATIENT WAS ADVERSELY IMPACTED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 25430870 ↗
• MalfunctionMay 22, 2026Retraction Problem

  DURING AN UNKNOWN ENDOSCOPIC PROCEDURE, THE PHYSICIAN USED A COOK ACUSNARE POLYPECTOMY SNARE. IT WAS REPORTED THAT THE SNARE WOULD NOT CLOSE [UNABLE TO RETRACT]. A SECTION OF THE DEVICE DID NOT REMAIN INSIDE THE PATIENT¿S BODY. THE PATIENT DID NOT REQUIRE ANY ADDITIONAL PROCEDURES DUE TO THIS OCCURRENCE. ACCORDING TO THE INITIAL REPORTER, THE PATIENT DID NOT EXPERIENCE ANY ADVERSE EFFECTS DUE TO THIS OCCURRENCE.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 25257992 ↗
• MalfunctionMay 11, 2026Failure to Cut

  DURING AN ENDOSCOPIC RETROGRADE CHOLANGIOPANCREATOGRAPHY (ERCP), THE PHYSICIAN USED TWO (2) COOK ACUSNARE POLYPECTOMY SNARE SOFT. IT WAS REPORTED [THAT] CUTTING WAS NOT OBSERVED [UNABLE TO CUT] AND OBSERVED THAT THE CABLE/CATHETER NEAR THE HANDLE PART WAS MELTED. A SECTION OF THE DEVICE DID NOT REMAIN INSIDE THE PATIENT¿S BODY. THE PATIENT DID NOT REQUIRE ANY ADDITIONAL PROCEDURES DUE TO THIS OCCURRENCE. ACCORDING TO THE INITIAL REPORTER, THE PATIENT DID NOT EXPERIENCE ANY ADVERSE EFFECTS DUE TO THIS OCCURRENCE.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 25138074 ↗
• MalfunctionMay 6, 2026Material Frayed

  DURING AN ASCENDING COLON POLYP REMOVAL, THE PHYSICIAN USED A COOK ACUSNARE POLYPECTOMY SNARE. IT WAS REPORTED [THAT] THE WIRE AT THE DISTAL END OF THE SNARE WAS FOUND TO BE FRACTURED. THE DEVICE WAS IMMEDIATELY REPLACED WITH A NEW COOK SNARE AND THE POLYPECTOMY WAS COMPLETED. THERE WAS NO REPORTABLE INFORMATION AT THIS TIME. THE DEVICE WAS EVALUATED ON 10APR2026. IT WAS DETERMINED THAT THE SNARE TIP WAS FRAYED AND THE DEVICE WAS BARELY ABLE TO CUT/COAGULATE THE TISSUE [SUBJECT OF REPORT]. A SECTION OF THE DEVICE DID NOT REMAIN INSIDE THE PATIENT¿S BODY. THE PATIENT DID NOT REQUIRE ANY ADDITIONAL PROCEDURES DUE TO THIS OCCURRENCE. ACCORDING TO THE INITIAL REPORTER, THE PATIENT DID NOT EXPERIENCE ANY ADVERSE EFFECTS DUE TO THIS OCCURRENCE.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 25094910 ↗
• MalfunctionApr 29, 2026Material Deformation

  IN PREPARATION FOR A PROCEDURE, THE USER SELECTED A COOK COOK ACUSNARE POLYPECTOMY SNARE. IT WAS REPORTED [THAT] THE SNARE APPEARED BENT AND NOT IN THE EXPECTED SHAPE. A SECTION OF THE DEVICE DID NOT REMAIN INSIDE THE PATIENT¿S BODY. THE PATIENT DID NOT REQUIRE ANY ADDITIONAL PROCEDURES DUE TO THIS OCCURRENCE. ACCORDING TO THE INITIAL REPORTER, THE PATIENT DID NOT EXPERIENCE ANY ADVERSE EFFECTS DUE TO THIS OCCURRENCE.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 25032393 ↗
• MalfunctionApr 21, 2026Off-Label Use

  DURING AN UNKNOWN ENDOSCOPIC PROCEDURE, THE PHYSICIAN USED A COOK ACUSNARE POLYPECTOMY SNARES. IT WAS REPORTED THAT THE SNARE DID NOT CUT PROPERLY. A LARGE SNARE WAS USED TO FINISH THE PROCEDURE. A SECTION OF THE DEVICE DID NOT REMAIN INSIDE THE PATIENT¿S BODY. THE PATIENT DID NOT REQUIRE ANY ADDITIONAL PROCEDURES DUE TO THIS OCCURRENCE. ACCORDING TO THE INITIAL REPORTER, THE PATIENT DID NOT EXPERIENCE ANY ADVERSE EFFECTS DUE TO THIS OCCURRENCE.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 24940578 ↗
• MalfunctionApr 11, 2026Material Deformation

  IN PREPARATION FOR A PROCEDURE, THE USER SELECTED A COOK COOK ACUSNARE POLYPECTOMY SNARE. IT WAS REPORTED [THAT] THE SNARE APPEARED BENT AND NOT IN THE EXPECTED SHAPE. A SECTION OF THE DEVICE DID NOT REMAIN INSIDE THE PATIENT¿S BODY. THE PATIENT DID NOT REQUIRE ANY ADDITIONAL PROCEDURES DUE TO THIS OCCURRENCE. ACCORDING TO THE INITIAL REPORTER, THE PATIENT DID NOT EXPERIENCE ANY ADVERSE EFFECTS DUE TO THIS OCCURRENCE.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 24846423 ↗
• MalfunctionMar 31, 2026Failure to Conduct

  DURING A COLONOSCOPY, THE PHYSICIAN USED A COOK ACUSNARE POLYPECTOMY SNARE. IT WAS REPORTED [THAT] THE DEVICE WAS ENERGIZED IN PREPARATION FOR POLYP LIGATION, BUT IT FAILED TO ACTIVATE. THE DEVICE WAS RETRACTED, A NEW AS-1-S WAS INTRODUCED, AND THE PROCEDURE WAS COMPLETED SUCCESSFULLY. A SECTION OF THE DEVICE DID NOT REMAIN INSIDE THE PATIENT¿S BODY. THE PATIENT DID NOT REQUIRE ANY ADDITIONAL PROCEDURES DUE TO THIS OCCURRENCE. ACCORDING TO THE INITIAL REPORTER, THE PATIENT DID NOT EXPERIENCE ANY ADVERSE EFFECTS DUE TO THIS OCCURRENCE.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 24743645 ↗
• InjuryFeb 20, 2026Failure to Conduct

  DURING A COLONOSCOPY, THE PHYSICIAN USED A COOK ACUSNARE POLYPECTOMY SNARE SOFT. IT WAS REPORTED [THAT] THE SNARE FAILED - DID NOT CUT [POLYP] WITH HEAT [SUBJECT OF REPORT]. A SECTION OF THE DEVICE DID NOT REMAIN INSIDE THE PATIENT¿S BODY. ACCORDING TO THE INITIAL REPORTER, THE PATIENT DID NOT EXPERIENCE ANY ADVERSE EFFECTS DUE TO THIS OCCURRENCE. WHILE THE COMPLAINANT STATES THAT THE PATIENT WAS MOVED TO THEATRES AS THE OPERATORS WERE UNABLE TO REOPEN THE SNARE THAT WAS ENCLOSED AROUND THE POLYP, IT IS CURRENTLY UNKNOWN WHAT INTERVENTION WAS REQUIRED DUE TO THIS OCCURRENCE.

  Patient problems: Device Embedded In Tissue or Plaque

  MAUDE report 24405360 ↗

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