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Expired Canadian patentCanada

Method and apparatus for alternating pressure of a low air loss patient support system

CA 1309560 C · Owner: Kinetic Concepts, Inc. · Inventors: Vrzalik, John H.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Method and apparatus for preventing bed sores in a bedridden patient. A low air loss bed is provided including a frame a, first set of substantially rectangular air bags for supporting a patient thereon mounted transversely on the frame and a second, set of substantially rectangular air bags for supporting a patient thereon mounted transversely on the frame and all of the, air bags are connected to a gas source. The conformation of the air bags is such that, when the first set of air bags is inflated, the patient supported thereon is moved toward the first side of the frame of the low air loss bed and when the second, set of air bags is inflated while the first set of air bags is deflated, …

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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

  • Granted November 3, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 3, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 3, 1987
GrantedNovember 3, 1992
Term endedNovember 3, 2009
Patent numberCA 1309560 C
Classification (IPC)A61G7/05 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedSep 3, 1987Patent grantedNov 3, 1992Term endedNov 3, 2009

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.