H.10 additional manufacturer narrative: h.3 device evaluation by manufacturer the aquabeam handpiece was returned for investigation.Functional testing confirmed that the aquabeam handpiece was able prime at 50% and 100% power; however, some jetting ocurred during priming, which is not expected.After fully priming the handpiece, an aquablation cycle simulation was performed; the jetting behavior was deemed to be abnormal.Water was seen leaking from the tip of the scope while jetting occurred.The jetting also stopped midway in the aquablation cycle.The inlet valve was removed from the piston body inside the jump cartridge to be observed under magnification.The inlet valve was observed to have no anomalies.A review of the device history records (dhr) for ab2000/serial number (b)(6) and aquabeam handpiece/lot number 21c00490r1 were performed, which confirmed that there were no nonconformances, failures, discrepancies, or missed steps during the manufacturing process that could be related to the reported event.The review indicated that the system and its associated components met all design and manufacturing specifications when released for distribution.The aquabeam robotic system instructions for use, ifu0104-00 rev.B, was reviewed and states the following: 8.23.Sterile: align waterjet nozzle by doing the following: a.Toggle the trus stepper cradle (if needed) to center the aquabeam handpiece hyperechoic artifact with vertical yellow line b.Press the foot pedal to visualize position of waterjet (retract trus probe if needed by using knobs on stepper) c.Waterjet needs to be visible at 3 or 9 o'clock d.If slightly off, depress the black button on the mag block (located on the handpiece articulating arm) and rotate the aquabeam handpiece axis while stepping on foot pedal to align jets to 3 and 9 o'clock position.The reported event was able to be confirmed during the investigation; however, the root cause was unable to be established, as no anomalies were observed with the inlet valve.
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