Blood testing apparatus
AssigneeBoule Medical AB
InventorsIngemar Berndtsson, Lars Svensson, Lennart Niklason
Life of this patent
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Abstract
A disposable apparatus for use in blood testing includes a housing (21) having integrated means (41) for receiving a blood sample, a plurality of receptacles (28-33) for diluent and diluted sample, and a plurality of channels (34-39). Depressions are formed in a surface (27) of the housing to form the receptacles (28-33) and the channels. A diaphragm (40) seals the receptacles and the channels relative to said surface (27). When a pressure variation is applied to a portion of the diaphragm sealing a receptacle, liquid is caused to be displaced to or from that receptacle.
Claims21
A disposable cartridge for use in blood testing comprising:
- (a) a housing including multiple depressions formed on one surface of said housing, each of said depressions defining a main portion of a receptacle and connecting to at least one of channels disposed within said housing;
- (b) a diaphragm sealing said multiple depressions and forming multiple said receptacle;
- portions of said diaphragm over said depressions being flexible;
- and
- (c) a slide valve disposed within said housing among said channels adapted to interconnect selected channels for directing flow between selected receptacles,
- wherein displacement of a valve slide of said slide valve interconnects selected channels between selected receptacles.
A disposable cartridge for use in blood testing comprising:
- (a) a housing including a generally flat top side and multiple depressions formed on said top side, each of said depressions defining a main portion of a receptacle and connecting to at least one of channels disposed within said housing;
- (b) a diaphragm sealingly attached to said top side of said housing, covering said multiple depressions and forming multiple said receptacle;
- portions of said diaphragm over said depressions being flexible;
- and
- (c) a slide valve comprising a valve slide having a valve channel disposed on a surface of said valve slide, said slide valve disposed within said housing among said channels adapted to interconnect selected channels for directing flow between selected receptacles through said valve channel;
- wherein displacement of said valve slide interconnects selected channels between selected receptacles through said valve channel.
A disposable cartridge for use in blood testing comprising:
- (a) a housing including a generally flat top side and multiple depressions formed on said top side, each of said depressions defining a main portion of a receptacle and connecting to at least one of channels disposed within said housing;
- (b) a diaphragm sealingly attached to said top side of said housing, covering said multiple depressions and forming multiple said receptacle;
- portions of said diaphragm over said depressions being flexible;
- and
- (c) a valve comprising at least one valve channel having a defined volume, said valve disposed within said housing among said channels adapted to interconnect selected channels between selected receptacles for directing flow between selected receptacles through said valve channel, wherein said valve displaces a sample with said defined volume entrapped in said at least one valve channel into selected channels between selected receptacles.
Dependencies are inferred from the claim text.