{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8489188","patent":{"patent_number":"US-8489188","title":"Ventricular capture testing by analysis of an endocardial acceleration signal in an active implantable medical device","assignee":null,"inventors":[],"filing_date":"2011-07-26T00:00:00.000Z","publication_date":"2013-07-16T00:00:00.000Z","cpc_codes":["A61N","A61N","A61N","A61N","G06F"],"num_claims":17,"abstract":"An active implantable medical device such as a cardiac prosthesis, including ventricular capture testing by analysis of an endocardial acceleration signal. The device isolates in an endocardial acceleration (“EA”) signal an EA component, extracts from it, n representative indicators (PEA_i, LEA_i), and forms a vector EA (X_i) from these indicators. A classifier allows acquiring reference EA signals at a stimulation energy level sufficient to cause a capture, and in spontaneous rhythm in the absence of ventricular pacing and forms a corresponding plurality of first reference EA vectors. The n-dimensional space of the EA vectors is partitioned into two corresponding subspaces. The presence or absence of a capture is discriminated based on the position of the current EA vector (X_i) in one or other of these two sub-spaces. The representative indicators may be: the value of peak to peak amplitude, the width, the moment of occurrence of the peak, the starting time and the ending time of the EA1 and/or EA2 components, the signal to noise ratio (SNR), the contrast value, the entropy value, and the cumulative energy of the EA1 and/or EA2 component, or the value of the peak-to-peak amplitude of the EA 4 component."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Ventricular capture testing by analysis of an endocardial acceleration signal in an active implantable medical device","description":"An active implantable medical device such as a cardiac prosthesis, including ventricular capture testing by analysis of an endocardial acceleration signal. The device isolates in an endocardial accele","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8489188","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-8489188","citation_suggestion":"Patentable. \"Ventricular capture testing by analysis of an endocardial acceleration signal in an active implantable medical device\" (US-8489188). https://patentable.app/patents/US-8489188","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8489188","json":"https://patentable.app/api/llm-context/US-8489188","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T18:04:29.499Z"}