One assignee holds 1,102 of the 1,608 records in scope, far ahead of the rest of the field. The next four assignees combined bring the top 5 to 1,339 records, or 83.3% of all records in scope. Below that, filing counts drop sharply — fifth place holds 44 records and tenth place holds 23 — so any competitive analysis should treat the leader as the primary reference point rather than spreading attention evenly across the ranked field.

Filings rose from 52 in 2021 to 55 in 2024, a 6% increase over that span, after an earlier peak of 94 in 2017. The apparent drop in 2025 and 2026 is not a real slowdown — publication typically lags filing by around 18 months, so the most recent years in any patent dataset are always undercounted until later publications catch up. Judged on complete years only, the trend is one of rebuilding rather than decline.

91.0% of the 1,608 records carry an A61B classification (diagnosis & surgery) and 36.4% also carry B25J (manipulators & robots), showing the core claim territory is the surgical instrument itself with robotic manipulation as a common secondary element. Smaller shares extend into control systems (3.5%), body-fluid devices (3.5%), healthcare informatics (2.9%), force and pressure measurement (2.4%) and layered materials (1.9%). Because a single record can carry several classes, these shares add up to more than 100% and should not be read as mutually exclusive segments.

The filing density sits heavily in core mechanical wrist claims under A61B and B25J, while adjacent disciplines like force/pressure sensing (2.4% of records), control systems (3.5%) and healthcare informatics (2.9%) carry comparatively thin coverage. Sub-areas such as cable tension self-compensation, sterilization-cycle fatigue sensing and grip-strength feedback integration show low filing density relative to the core mechanism, which suggests room for narrowly drawn claims rather than a crowded field. A prior-art search focused specifically on these branches, rather than the wrist mechanism generally, is the more efficient use of review time.

US9492927B2, assigned to Intuitive Surgical Operations, Inc. and published 2016-11-15, claims a force-feedback control scheme that nudges an operator's input device toward a preferred pose for an articulated instrument, including phased transitions between preferred poses and virtual barriers preventing undesirable commands. It affects anyone designing teleoperated control software for an articulated or cable-driven surgical instrument that uses haptic or force feedback to guide pose selection. Design-around approaches generally need to avoid the specific combination of pose-nudging force commands with phased-transition logic, rather than avoiding force feedback outright.