Method and apparatus for improving fluidic flow and sample capture

  • US 9,561,000 B2
  • Filed: 12/10/2013
  • Issued: 02/07/2017
  • Est. Priority Date: 12/31/2003
  • Status: Active Grant
First Claim
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1. A body fluid sampling device for use on a patient, comprising:

  • a cartridge;

    at least one penetrating member positioned in the cartridge;

    a sample port for receiving a body fluid in response to a puncturing event by the at least one penetrating member;

    a sample chamber that includes an analyte detecting member;

    a channel coupled to the sample port and the sample chamber, at least a portion of the channel being a capillary channel positioned adjacent to the sample chamber;

    a mesh membrane that provides body fluid transport and positioned in the channel and at the sample port or adjacent to the sample port to guide a flow of the body fluid through at least a portion of the capillary channel with the mesh providing that the body fluid contacts the channel regardless of an orientation of body fluid sampling device, the mesh being positioned to provide that the mesh does not disrupt a path of a penetrating member as it passes from the cartridge and is pushed aside from the penetrating member creating a ring of capillary fibers around a wound channel that is available after the penetrating member is retracted to wick the body fluid into the channel; and

    an adhesive integrated with the mesh membrane for defining a flow channel within the mesh membrane structure, the adhesive prohibiting fluidic flow where flow is not desired, sealing the flow channel from lateral flow leaks and providing an enhancement for fluid flow in the flow channel.

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