Surgical Robot Actuation Patents: Who Leads, Trends 2026
- Filing has cooled since 2017. The peak year for this search was 2017 at 16 families, and the 2022 midpoint of 15 shows the field has since flattened rather than accelerated.
- A61B dwarfs every other classification. 113 of 120 records sit in A61B (diagnosis & surgery), with B25J manipulator claims a distant second at 32 — actuation control and clutch mechanisms remain comparatively thin.
- The most-cited records are a single citation cluster. The top five most-cited documents trace back to two related families on clamping prediction and minimally invasive tool systems, showing influence concentrated rather than spread across many originators.
What this dataset covers
This landscape draws on 120 published patent families matching surgical robot systems combined with cable-driven or micro-actuation mechanisms, filed between 2015 and the 2026 data cut-off. Coverage spans United States, European, Chinese, PCT and German filings, giving a cross-jurisdictional view of where actuation claims have actually been staked rather than merely discussed. The most recent filing year is necessarily incomplete — publication lags filing by roughly eighteen months, so 2026’s near-zero count understates real activity rather than signalling a stop.
The technology composition leans heavily on A61B (surgery) with B25J (manipulators) as the clear secondary class, while control mechanisms, clutches and digital processing appear only in single digits. That imbalance is itself the finding: most protection sits on the surgical-system envelope, not on the mechanical actuation primitives underneath it.
Filing trend and technology composition
Two views of the same 120-family dataset: how filing volume has moved year over year, and how those filings distribute across IPC subclasses.
Filing trend, 2017–2026
Filings peaked at 16 in 2017 and sat at 15 by the 2022 midpoint — essentially flat over five years rather than climbing, with the tail into 2026 reflecting publication lag more than a real slowdown.
IPC subclass distribution
A61B accounts for 113 of 120 records; B25J trails at 32. G06F, A61M, A61F, F16D and G05G each register in the single digits, and G05B appears just once — the mechanical and control-layer subclasses are comparatively open.
Shares are the percentage of the 120 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Surgical Robot Actuation with Eureka
This page is one run against one query. Ask Eureka your own question about surgical robot actuation and every answer comes back with the patent numbers behind it.
Try EurekaThe most-cited records
Integrated control system of a surgical robot based on an embedded computer
This record, filed by Beijing Surgerii Technology, describes an integrated control architecture for a surgical robot built around an embedded computer, positioning system-level control logic rather than a mechanical actuation primitive as the point of protection.Granted 2023-11-08 — illustrative of how recent Chinese-origin filings frame actuation control at the system-integration level rather than the joint or cable-drive mechanism level.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US8989903B2 | Methods and systems for indicating a clamping prediction | 1,438 |
| 2 | US9089352B2 | Surgical robot system having tool for minimally invasive surgery | 1,098 |
| 3 | US9814530B2 | Methods and systems for indicating a clamping prediction | 886 |
| 4 | US9999472B2 | Methods and systems for indicating a clamping prediction | 845 |
| 5 | WO2010050771A2 | Surgical robot system having tool for minimally invasive surgery | 776 |
| 6 | US20200405403A1 | Method of using a surgical modular robotic assembly | 477 |
| 7 | US9662177B2 | Methods and systems for indicating a clamping prediction | 368 |
| 8 | US20110213384A1 | Surgical robot system having tool for minimally invasive surgery | 368 |
| 9 | US11207146B2 | Surgical instrument drive systems with cable-tightening system | 337 |
| 10 | US20200405422A1 | Surgical instrument drive systems with cable-tightening system | 224 |
Citation counts here reflect influence within an older filing cohort — the top records date to families built around clamping prediction and minimally invasive tool systems, and high citation counts favour age over current relevance.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Three read-outs from the filing, classification and citation data that matter for a freedom-to-operate or whitespace call.
Flat since 2017, not accelerating
The 2022 midpoint of 15 sits almost exactly where 2017 started, meaning five years of filings roughly held steady rather than compounded. Combined with the publication lag, the apparent drop into 2026 is not evidence the field has stalled — but it is evidence no new filing surge has yet shown up in the granted record.
Surgery-system claims dominate over mechanism claims
A61B (diagnosis and surgery) covers the near-totality of this corpus while B25J (manipulators/robots) covers just 32, and mechanism-specific classes like F16D (clutches/brakes) and G05G (control mechanisms) sit at 4 each. Protection is concentrated at the surgical-application layer, leaving the underlying drive-train mechanics comparatively open.
Influence traces to a small citation cluster
The five most-cited records split between two subject families — clamping prediction and minimally invasive tool systems — rather than five distinct originators. That pattern is typical of an older, foundational cohort and should be read as historic influence, not as a signal of where current filing activity is concentrated.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to surgical robot actuation, with the prior art for and against each one.
Assignees and where activity has moved
Recent-year momentum across the named assignees in this corpus shows no filer posting fresh activity in the latest year — a signal to read alongside the flat overall trend rather than in isolation.
Collaboration is thin and mostly single-instance
Only nine co-assignee pairs appear across 120 families, and the strongest pair — Beijing Surgerii Robotics and The First Affiliated Hospital of Naval Medical University — appears just three times. Most other pairings register once, suggesting joint filing is the exception rather than an established practice in this space.
No filer shows fresh latest-year activity
Every assignee tracked for recent-year momentum, including Intuitive Surgical and Beijing Surgerii, records zero filings in the latest year, with Intuitive Surgical showing a -100% year-on-year change. Given publication lag, this is more likely a reporting gap than a genuine halt across the field.
US leads filing volume, China and EPO follow closely
The United States receives the largest share of filings at 50, with Europe (EPO) at 26 and China and WIPO (PCT) tied at 15 each. Germany's 7 and Austria's 4 point to a secondary European filing tier rather than a broad regional spread.
| Assignee | Recent year | YoY |
|---|---|---|
| Intuitive Surgical, Inc. | 0 | -100% |
| Beijing Surgerii Robotics Co., Ltd. | 0 | — |
| BEIJING SURGERII ROBOTICS CO LTD | 0 | — |
| Ethicon Endo-Surgery (Europe) / Cilag GmbH International | 0 | — |
| Ascendis / Escom Inc. | 0 | — |
| JEONG CHANG WOOK | 0 | — |
| Virtual Incision Corporation | 0 | — |
| Ethicon Endo-Surgery, LLC | 0 | — |
Where to take this next
The dataset points to specific follow-up questions rather than a single conclusion — these are the ones worth running down.
Check mechanism-layer claims before filing
With F16D and G05G each at only 4 records against A61B's 113, a freedom-to-operate check should look specifically at clutch, brake and control-linkage claims rather than assuming the surgical-application crowding extends down to the mechanism level.
Explore actuation mechanism claims in Eureka →Watch for a filing rebound once lag clears
Because publication lag makes 2025–2026 numbers structurally incomplete, re-run this trend in twelve to eighteen months before concluding the field has genuinely slowed.
Track filing trends in Eureka →Map the citation cluster's current owners
The top-cited records concentrate around two related families; confirming current assignment and litigation history on those specific numbers matters more than the raw citation count.
Trace citation lineage in Eureka →Common questions on surgical robot actuation patents
The most-cited documents in this corpus trace to two related families: one on clamping-prediction methods (led by records like US8989903B2 with 1,438 citations) and one on minimally invasive tool systems (led by US9089352B2 with 1,098 citations). High citation counts reflect an older, foundational filing cohort rather than current filing volume, so these are best read as influence markers, not as evidence of who is filing most today. Anyone doing freedom-to-operate work should still check current assignment on these specific numbers rather than assuming original ownership has not changed.
Not based on this dataset: filings peaked at 16 in 2017 and the 2022 midpoint sat at 15, indicating a flat rather than growing trend over five years. The drop shown for 2025 and 2026 is very likely a publication-lag artefact, since granted patents typically appear about eighteen months after filing. A fair read is that filing activity has plateaued, with the true trajectory for the most recent two years not yet visible in the data.
A61B, the surgery and diagnosis classification, covers 113 of the 120 records in this corpus, making system-level surgical robot claims the most crowded area by a wide margin. B25J, covering manipulators and robotic mechanisms generally, is a distant second at 32 records. Classes tied to the underlying mechanics — F16D for clutches and brakes, G05G for control mechanisms, G05B for control and regulating systems — each appear in only single digits, suggesting the mechanical actuation layer itself is comparatively under-claimed relative to the surgical application built on top of it.
The clearest gaps sit in the mechanism-level classes that barely register in this corpus: clutch and brake integration at the tool interface (F16D, 4 records), control-member feedback linkages (G05G, 4 records), and fluid-path actuation coupling (A61M, 6 records). Because A61B claims dominate at the application layer, a first claim targeting the specific cable-tensioning or micro-actuation mechanism — rather than the surgical system it sits inside — is more likely to clear existing art. This should be confirmed with a targeted prior-art search on the specific mechanism before drafting.
EP3508163B1, granted to Beijing Surgerii Technology in November 2023, describes an integrated control system for a surgical robot built around an embedded computer — a system-integration approach to actuation control rather than a claim on a specific mechanical drive mechanism. Its filing date and assignee illustrate how recent Chinese-origin patents in this space tend to frame control architecture at the system level. Anyone assessing overlap should look closely at its specific control-loop and embedded-computer claim language rather than assuming it blocks mechanism-level actuation work broadly.
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Disclaimer. This page is generated from Patsnap Eureka data drawn from a limited snapshot of global patent and scientific-literature records, and is provided for general information and reference only.
Patent data carries inherent limitations: recent filings (typically the most recent 18–24 months) are under-counted due to standard publication lag; counts may be reported at either a patent-family or a patent-record basis and are not always directly comparable; classification, applicant-name, and citation data may contain errors, duplicates, or omissions; and the underlying search query defines and constrains the scope shown. As a result, the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
Nothing on this page constitutes an exhaustive prior-art, novelty, freedom-to-operate, or validity search, nor does it constitute legal, financial, investment, or professional advice, and it should not be relied upon as such. Any patent, commercial, or strategic decision should be verified independently and reviewed with qualified patent, legal, and domain professionals. Patsnap makes no warranties, express or implied, as to the accuracy, completeness, or fitness for any particular purpose of the information presented.
Machine translation. Assignee and organisation names originally recorded in Chinese, Japanese or Korean have been rendered into English by an AI translation step so that the tables stay readable. These renderings are best-effort and may not match a company’s registered English name; the original name is what the underlying patent record carries, and it is what any Eureka query launched from this page uses.