Low pain penetrating member

  • US 9,144,401 B2
  • Filed: 12/12/2005
  • Issued: 09/29/2015
  • Est. Priority Date: 06/11/2003
  • Status: Expired due to Fees
First Claim
Patent Images

1. A device comprising:

  • a housing;

    a penetrating member for piercing tissue and positioned in the housing and configured to be advanced from the housing and retracted back into an interior of the housing, the penetrating member including a rod of a given diameter and geometry, and a piercing distal end with a primary facet and two side facets and a ratio of a primary facet length to a side facet length is less than 2.24;

    0.63, the penetrating member including a splined cross-section or dimples impressed across a contact area of the penetrating member, the primary facet having an angle cut that is different from angle cuts of the two side facets, the two side facets having the same angle cut;

    a drive force generator configured to be coupled to the penetrating member for advancing the penetrating member along a path into a tissue site, create a penetration and a subsequent flow of a blood sample into a receiving channel of the housing; and

    a processor with a memory for storage and retrieval of a set of penetrating member profiles utilized with the penetrating member driver, wherein each penetrating member profile from the set of penetrating member profiles includes the given diameter and geometry that correspond with upper and lower limits of attainable blood volume based on predetermined displacement and velocity profiles.

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