Surgical Stapler Anastomotic Leak Detection 2026
Surgical Stapler Anastomotic Leak Detection
Anastomotic leaks complicate approximately 10% of gastrointestinal anastomoses, driving demand for real-time intraoperative feedback. This landscape maps 60+ retrieved patent and literature records spanning 2005–2025.
Two Converging Domains in Smart Stapler Technology
The field divides into intraoperative stapler feedback — mechanisms embedded in circular or linear instruments communicating device state, firing completeness, anvil position, and seal quality in real time — and anastomotic integrity sensing systems designed to detect or predict anastomotic failure either immediately after firing or in the early post-operative period.
Feedback modalities within the first domain include LED indicators, auditory signals, vibration and haptic actuation, mechanical visual indicators linked to the thrust bar, load sensing during the firing stroke, position sensing of translating members, and electrical continuity detection between anvil contacts and trocar — spanning filings from 2005 through 2025.
The second domain encompasses implantable sensors tethered to staples, chemical and biochemical fluid sampling via dual-action catheters, integrated visualization cameras in the staple head, algorithmic analysis of staple-line motion from imaging data, and pH- and enzyme-responsive smart hydrogel patches applied directly to the anastomotic site.
In retrieved records, 4 primary assignees account for the substantial majority of filings. Ethicon LLC / Cilag GmbH International holds more than 25 distinct records in this dataset, while Covidien LP accounts for approximately 15 or more records, together representing the two largest filing clusters in this dataset.
Innovation Waves Across Four Technology Generations
Retrieved filings in this dataset cluster into four distinct waves from 2005 to 2025, progressing from passive mechanical indicators through electromechanical sensing to dedicated anastomotic leak detection architectures.
Patent Cluster Distribution by Technology Domain — Retrieved Records
Cluster 4 (dedicated anastomotic leak detection) and Cluster 1 (mechanical/electro-optical indicators) account for the largest share of distinct patent families in this dataset, reflecting both foundational volume and recent clinical focus.
↗ Click bars to exploreFiling Activity by Innovation Wave Period — Retrieved Records
The 2021–2025 wave shows the highest concentration of anastomotic leak detection-specific filings in this dataset, while the 2010–2014 period generated the largest overall volume of core stapler feedback platform patents.
↗ Click bars to exploreKey Surgical Domains for Stapler Feedback and Leak Detection
Retrieved records in this dataset map across four principal surgical application areas, from colorectal oncological resection — the highest-volume indication — through esophageal, bariatric, and thoracic procedures, each presenting distinct leak risk profiles and feedback requirements.
Colorectal & Lower GI Surgery
The highest-volume application domain in this dataset, colorectal anastomosis following oncological resection is the primary indication cited across nearly all circular stapler feedback patents from Ethicon/Cilag and Covidien indicator families. Covidien’s anastomotic leak sensor families (2022–2024) explicitly target colorectal anastomosis integrity monitoring. Anastomotic leaks complicate approximately 10% of GI anastomoses according to clinical literature in this dataset.
In-situ SensingEsophageal & Upper GI Surgery
Esophagojejunal and esophagogastric anastomoses following esophagectomy or total gastrectomy carry leak rates of 10–15% in reported series in this dataset. A 632-patient cohort study compared 25 mm vs. 28 mm circular staplers and found leak rates of 15.4% vs. 10.8% respectively. A pilot study on stapled gastroesophageal anastomosis and a smart sealants literature record (2022) directly address prevention and monitoring in this domain.
Anastomotic Leak PreventionBariatric Surgery
A 2,311-patient laparoscopic Roux-en-Y gastric bypass series documented that intraoperative endoscopy detected leaks in 3.5% of patients, with reinforcement performed in 46 cases. A 352-patient sleeve gastrectomy cohort found a 0.9% stenosis rate detected by intraoperative endoscopy. The SurgiSense sensing adjunct and Covidien integrated visualization stapler are specifically applicable to this domain.
Intraoperative VisualizationThoracic Surgery
Bronchial stump closure and pulmonary anastomoses are referenced in Covidien’s visualization and assembly-confirmation filings in this dataset. The Cilag GmbH “Smart circular staplers” (US/WO, 2023) explicitly lists thoracic procedures among target indications. The integrated sensor, housing-mounted display, and control circuit architecture described in that filing is applicable to thoracic anastomotic integrity verification.
Stapler FeedbackLeading Patent Assignees in Surgical Stapler Feedback — Dataset Snapshot
In retrieved records, Ethicon LLC / Cilag GmbH International (Johnson & Johnson MedTech) and Covidien LP (Medtronic) collectively account for more than 40 of the 60+ records in this dataset, with Ethicon/Cilag holding the broadest intraoperative feedback portfolio and Covidien LP holding the most clinically targeted anastomotic leak detection filings in retrieved records.
Top Assignees by Approximate Filing Count (Dataset Snapshot)
↗ Click bars to exploreEthicon LLC / Cilag GmbH International
The most prolific assignee in this dataset, with more than 25 distinct records spanning US, EP, WO, IN, BR, and CA jurisdictions filed between 2010 and 2025. Core families cover anvil position feedback, tissue cut-through indication, incomplete firing indicators, staple height indicators, and the newest Smart circular staplers (US/WO, 2023) and trocar sensing families (US/WO, 2025). Active patents observed across US, EP, and IN jurisdictions.
United States / GermanyCovidien LP (Medtronic)
The second largest assignee in this dataset with approximately 15 or more records across US, EP, WO, and AU jurisdictions filed between 2005 and 2024. Covidien holds the most directly clinically targeted portfolio in this dataset, including the anastomotic leak sensor family (US/WO, 2023), staple-tethered post-operative monitoring (US, 2024), suture failure detection systems (US/EP, 2022–2024), and integrated visualization stapler (US/WO, 2022–2023). Active patents observed in US, EP jurisdictions.
United StatesSix Convergent Vectors Shaping the Next Generation
Records published between 2022 and 2025 in this dataset signal a shift from device-state feedback toward continuous peri-operative monitoring, integrated visualization, and AI-assisted anastomosis status prediction as distinct technology layers.
Staple-Tethered Implantable Sensors for Continuous Monitoring
Covidien LP’s US filing (2024) describes a sensor releasably coupled to a staple via a tether that measures physiological parameters of tissue post-deployment, transmitting wirelessly to a reader and computing device. This architecture moves from intraoperative to continuous peri-operative monitoring using the staple itself as the implant vehicle. The approach represents a distinct category absent from earlier Ethicon and SurgiSense filings in this dataset.
AI-Assisted Anastomosis Status Prediction from Imaging Data
Covidien LP’s US filing (2022) describes software algorithms that quantify relative staple and staple-line motion from imaging, compute indexes compared against clinical thresholds, and generate warning signals when anastomosis healing deviates from normal parameters. This signal-processing layer is software-centric and represents a non-device IP opportunity separate from hardware stapler filings. Algorithm architecture, training data, and clinical validation pathways are identified as differentiation levers in this dataset.
Intraoperative Stapler Feedback vs. Dedicated Anastomotic Leak Detection
Click any row to explore further.
| Dimension | Intraoperative Stapler Feedback | Dedicated Anastomotic Leak Detection |
|---|---|---|
| Primary Goal | Communicate device state, firing completeness, and anvil position to the surgeon in real time | Detect or predict failure of the anastomosis itself, immediately post-firing or peri-operatively |
| Core Assignees (Dataset) | Ethicon LLC / Cilag GmbH International (25+ records), Covidien LP, Immersion Corporation | Covidien LP (anastomotic leak sensor, suture failure detection families 2022–2024), Empire Technology Development LLC |
| Sensing Modalities | LED illumination, auditory signals, haptic/vibration, Hall Effect magnetic sensing, load sensors, position sensors, electrical continuity circuits | Staple-tethered physiological sensors, integrated optical visualization, biochemical fluid sampling, pH/enzyme-responsive hydrogels, load signature algorithms |
| Filing Date Range (Dataset) | 2005 (Covidien trocar sensor) through 2025 (Cilag trocar position sensing) | 2015 (Empire Technology dual-action catheter) through 2024 (Covidien staple-tethered sensor) |
| Timing of Detection | Intraoperative only — feedback during or immediately after firing stroke | Intraoperative and/or continuous post-operative peri-anastomotic monitoring |
| Key Patent Examples | Cilag GmbH — anvil position feedback (2010 US); incomplete firing indicator (2016 US); smart circular staplers (2023 US/WO) | Covidien LP — anastomotic leakage sensor (2023 US/WO); post-operative leak detection (2024 US); integrated visualization (2022–2023 US/WO) |
| IP Status Notes | Active US, EP, IN patents; Immersion Corp US patent now inactive | Active US and EP patents; Empire Technology single US filing is inactive |
| Primary Application Domain | Colorectal, esophageal, bariatric, thoracic — broad procedure coverage | Colorectal anastomosis explicitly targeted in Covidien 2022–2024 families; esophageal addressed in literature |
FAQs: Surgical Stapler Anastomotic Leak Detection Patents
Anastomotic leaks complicate approximately 10% of gastrointestinal anastomoses and remain a leading cause of post-operative morbidity and mortality according to clinical literature in this dataset. This creates strong clinical and commercial pressure for systems that can verify anastomotic integrity at the point of construction.
In this dataset, Ethicon LLC / Cilag GmbH International (Johnson & Johnson MedTech) holds the most records with more than 25 distinct filings across US, EP, WO, IN, BR, and CA jurisdictions. Covidien LP (Medtronic) is the second largest with approximately 15 or more records, holding the most clinically targeted anastomotic leak detection portfolio in retrieved records.
Retrieved records describe LED illumination on the anvil or handle, auditory and vibration/haptic signals, mechanical thrust-bar-linked flag indicators, load sensors measuring firing force in real time, position sensors tracking the translating firing member, Hall Effect magnetic sensing, and electrical continuity detection between anvil contacts and trocar.
Covidien LP’s portfolio in this dataset includes: an anastomotic leakage sensor that analyzes predictive parameters (US/WO, 2023); systems and methods for post-operative anastomotic leak detection using a sensor releasably tethered to a staple (US, 2024); software algorithms quantifying staple-line motion for leakage prediction (US, 2022); integrated optical visualization within the staple head (US/WO, 2022–2023); and suture failure detection during powered stapling by monitoring load signatures (US/EP, 2022–2024).
According to literature records in this dataset, esophagojejunal and esophagogastric anastomoses carry leak rates of 10–15% in reported series. A 632-patient cohort study found leak rates of 15.4% with a 25 mm circular stapler versus 10.8% with a 28 mm stapler. Colorectal anastomosis is the primary indication referenced across the majority of circular stapler feedback patents in this dataset.
Records from 2022–2025 in this dataset identify six directions: staple-tethered implantable sensors for continuous peri-operative monitoring (Covidien, 2024); integrated endoscopic visualization within the staple head (Covidien, 2022–2023); AI-assisted anastomosis status prediction from imaging data (Covidien, 2022); smart circular staplers with on-device displays (Cilag GmbH, 2023); trocar position sensing and anvil state communication (Cilag GmbH, 2025); and smart biomaterial sealants with pH/enzyme-responsive sensing (literature, 2022).
Data and insights on this page are based on a limited patent and literature dataset and are for reference only. Figures may not represent the complete technology landscape.