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Last Updated: September 20, 2020

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Patent: 8,221,406

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Summary for Patent: 8,221,406
Title:Device for the electro-surgical sclerosing of body tissues
Abstract: A high frequency current application apparatus for thermal sclerosing of body tissue, comprising a high frequency generator connected to at least two electrodes, one of which is to be introduced into body tissue. The apparatus includes a measuring and calculating device adapted to ascertain impedance (or ohmic resistance) between the two electrodes between which a respective therapeutic high frequency current flows. A control device is connected to the measuring and calculating device for varying the output power. During high frequency current application the measuring and calculating device forms the first derivative with respect of time of the impedance. The control device reduces output power when that derivative exceeds a positive threshold characteristic of a threat of tissue desiccation and restores output power to the original power when the first derivative exceeds in positive values a negative threshold characteristic of adequate rehydration of body tissue.
Inventor(s): Desinger; Kai (Berlin, DE), Stein; Thomas (Teltow, DE), Roggan; Andre (Berlin, DE), Prezewowsky; Thomas (Teltow, DE)
Assignee: Celon AG Medical Instruments (DE)
Application Number:11/660,613
Patent Claims:see list of patent claims

Details for Patent 8,221,406

Applicant Tradename Biologic Ingredient Dosage Form BLA Number Approval Date Patent No. Assignee Estimated Patent Expiration Status Orphan Source
Merck Sharp & Dohme Corp. ZOSTAVAX zoster vaccine live INJECTION, POWDER, LYOPHILIZED, FOR SUSPENSION 125123 001 2006-05-25   Start Trial Celon AG Medical Instruments (DE) 2024-08-20 search
Merck Sharp & Dohme Corp. ZOSTAVAX zoster vaccine live INJECTION, POWDER, LYOPHILIZED, FOR SUSPENSION 125123 1 2006-05-25   Start Trial Celon AG Medical Instruments (DE) 2024-08-20 search
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Number >Approval Date >Patent No. >Assignee >Estimated Patent Expiration >Status >Orphan >Source

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