Heart assist system with muscle fitness detection by colorimetry
CA 2069004 A1 · Owner: Medtronic, Inc. · Inventors: Grandjean, Pierre-Andre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus and method for monitoring the performance of skeletal muscle (22) used in a skeletal muscle powered cardiac assist system. The monitoring is performed by an oxygen sensor (106) which determines the adequacy of circulatory support to the skeletal muscle (22). An adequately supported skeletal muscle can offer the desired cardiac assistance chronically. Insufficient support indicates that the skeletal muscle will easily fatigue until adequate vascularization is achieved. If the circulatory support is chronically insufficient, the risk of ischemia becomes high and additional surgical intervention may be required. A preferred mode employs a two wavelength reflectance oximeter. The …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed December 4, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 4, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 4, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.