MAUDE Adverse Event Report: INTUITIVE SURGICAL, INC SINGLE-SITE; PERMANENT CAUTERY HOOK

Model Number	478090-03
Medical Device Problem Code	Detachment of Device or Device Component (2907)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	12/18/2025
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
Intuitive surgical, inc.(isi) followed up with the initial reporter and obtained additional information: there was no broken part of tip however it was connected lose to instrument.The instrument was inspected prior to use and damage was found.It was dissecting surgical task and excessive force caused the instrument to break.The instrument was in use for 30 minutes and surgeon noticed that instrument was not functioning properly.
Event or Problem Description
Refer to h11 for follow-up information.
Additional Manufacturer Narrative
Intuitive surgical, inc.(isi) has not received the instrument for evaluation.Therefore, the root cause of the customer reported failure mode has not been determined.A follow-up mdr will be submitted if the product is returned and evaluated and/ or if additional information is received.
Event or Problem Description
It was reported that during da vinci-assisted surgical procedure, the tip part of permanent cautery hook was found to be missing.Backup instrument of same kind was used.The procedure was completed with no reported injury.
Additional Manufacturer Narrative
Intuitive surgical, inc.(isi) has received the permanent cautery hook instrument associated with this complaint and completed investigations.The instrument was found to have a broken main tube at the distal tip.No material was found missing.Components adjacent to this broken main tube do not show damage.
Event or Problem Description
Refer to h11 for follow-up information.

• Brand Name: SINGLE-SITE
• Common Device Name: PERMANENT CAUTERY HOOK
• Manufacturer (Section D): INTUITIVE SURGICAL, INC; 3410 central expressway; santa clara CA 95051
• Manufacturer (Section G): INTUITIVE SURGICAL, INC; 3410 central expressway; santa clara CA 95051
• Manufacturer Contact: izabel nielson ; 3410 central expressway; santa clara, CA 95051 ; 4085232100
• MDR Report Key: 24000485
• Report Number: 2955842-2026-00468
• Device Sequence Number: 13389185
• Product Code: NAY
• UDI-Device Identifier: 00886874113721
• UDI-Public: (01)00886874113721(11)250102(10)K10250102
• Combination Product (Y/N): N
• Initial Reporter Country: KS
• PMA/510(K) Number: K152448
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Reporter Type: Manufacturer
• Report Source: Other,Foreign,Health Professional
• Initial Reporter Occupation: Nurse
• Remedial Action: Other
• Type of Report: Initial,Followup,Followup
• Report Date (Section B): 02/11/2026

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: No
• Is this a Product Problem Report?: Yes
• Operator of Device: Health Professional
• Device Model Number: 478090-03
• Device Catalogue Number: 478090
• Device Lot Number: K10250102 0092
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Follow-Up
• Initial Date Received by Manufacturer: 12/18/2025
• Supplement Date Received by Manufacturer: 01/12/2026; 01/20/2026
• Initial Report FDA Received Date: 01/08/2026
• Supplement Report FDA Received Date: 01/12/2026; 02/11/2026
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 01/02/2025
• Is the Device Labeled for Single Use? (Y/N): No
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Usage of Device: Initial
• If action reported to FDA under 21 USC 360i(g), list FDA-assigned Recall Number or include a statement: N/A
• Patient Sequence Number: 1
• Concomitant Medical Products and Therapy/Usage Dates: DA VINCI INSTRUMENTS AND ACCESSORIES
• Patient Sex: Unknown