Device for sampling bodily fluids
First Claim
1. Apparatus for sampling bodily fluids comprising:
- an elongated lancing medium having a skin piercing end and a stop, said skin piercing end adapted to be displaced against a skin site for making an incision and producing a droplet of bodily fluid from the skin site;
a transport medium with a first stepped portion and a second stepped portion, said transport medium being sufficiently close to said lancing medium to retain the droplet of bodily fluid therebetween by capillary action, said stop being adapted to selectably contact one of the stepped portions while making an incision, the distance said skin piercing end extends beyond said transport medium with the stop contacting the first stepped portion being different from the distance said skin piercing end extends beyond said transport medium with the stop contacting the second stepped portion; and
an actuating device connected to said lancing medium and said transport medium, wherein said actuating device displaces said lancing medium and said transport medium away from said skin site to move the droplet of bodily fluid retained by said transport medium and said lancing medium away from said skin site.
2 Assignments
0 Petitions
Accused Products
Abstract
A bodily fluid sampling device comprising a lancet which can be advanced against a skin-piercing site to produce a droplet of bodily fluid. A transport medium is positioned sufficiently close to the lancing medium to retain a droplet of bodily fluid therebetween by capillary action. One of the two mediums has hydrophobic material on its surface and the other hydrophilic. Various mechanisms are provided for relatively displacing the lancing and transport medium to move the droplet of bodily fluid away from the skin-piercing end. Furthermore, multiple lancet assemblies may be provided in a barrel or disk configuration and indexed to the displacing mechanisms for sampling a skin site.
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Citations
31 Claims
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1. Apparatus for sampling bodily fluids comprising:
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an elongated lancing medium having a skin piercing end and a stop, said skin piercing end adapted to be displaced against a skin site for making an incision and producing a droplet of bodily fluid from the skin site; a transport medium with a first stepped portion and a second stepped portion, said transport medium being sufficiently close to said lancing medium to retain the droplet of bodily fluid therebetween by capillary action, said stop being adapted to selectably contact one of the stepped portions while making an incision, the distance said skin piercing end extends beyond said transport medium with the stop contacting the first stepped portion being different from the distance said skin piercing end extends beyond said transport medium with the stop contacting the second stepped portion; and an actuating device connected to said lancing medium and said transport medium, wherein said actuating device displaces said lancing medium and said transport medium away from said skin site to move the droplet of bodily fluid retained by said transport medium and said lancing medium away from said skin site. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. Apparatus for sampling bodily fluid from a skin, comprising:
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a lancet with a tip for forming an incision in the skin and a stop; a sheath adjacent the lancet with a semicircular disk extending toward the lancet, the semicircular disk including a skin contacting surface adapted to contact the skin; and an actuator connected to the lancet and the sheath, the actuator configured to rotate the sheath and the lancet relative to one another from a first position wherein the stop restricts the lancet tip from extending beyond the skin contacting surface, to a second position wherein the stop does not restrict the lancet tip from extending beyond the skin contacting surface. - View Dependent Claims (13, 14, 15)
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16. Apparatus for sampling bodily fluids comprising:
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an elongated lancing medium having a skin piercing end adapted to be displaced against a skin site for making an incision, an elongated transport medium with a fluid retaining member and a skin contacting surface, said elongated transport medium rotationally connected to said elongated lancing medium, said fluid retaining member adapted to contact a droplet of bodily fluid from the incision, said fluid retaining member positioned adjacent said lancing medium and spaced to suspend the droplet of bodily fluid from the incision between said fluid retaining member and said lancing medium by capillary action, and an actuating device connected to said lancing medium and said transport medium, said actuating device adapted to rotate said lancing medium and said transport medium relative to one another, wherein a first rotational orientation between said lancing medium and said transport medium aligns a first pair of abutment portions, one abutment portion being on said lancing medium and one abutment portion being on said transport medium, said skin piercing end being displaced a first distance from said skin contacting surface when the first pair of abutment portions abut one another, and wherein a second rotational orientation between said lancing medium and said transport medium aligns a second pair of abutment portions, one abutment portion being on said lancing medium and one abutment portion being on said transport medium, said skin piercing end being displaced a second distance from said skin contacting surface wl4en the second pair of abutment portions abut one another, said second distance being different from said first distance. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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25. Apparatus for sampling bodily fluids comprising:
- an elongated lancing medium having a skin piercing end and a stop, said skin piercing end adapted to be displaced against a skin site for making an incision and producing a droplet of bodily fluid from the skin site; and
a transport medium with a first stepped portion and a second stepped portion, said transport medium being sufficiently close to said lancing medium to retain the droplet of bodily fluid therebetween by capillary action, said stop being adapted to selectably contact one of the stepped portions while making an incision, the distance said skin piercing end extends beyond said transport medium with the stop contacting the first stepped portion being different from the distance said skin piercing end extends beyond said transport medium with the stop contacting the second stepped portion; wherein said transport medium comprises a discrete element displaceable relative to said lancing medium; and wherein said lancing medium is circular in cross section and said transport medium discrete element is a half-round element embracing a portion of the circumference around said lancing medium. - View Dependent Claims (26, 27, 28, 29, 30, 31)
- an elongated lancing medium having a skin piercing end and a stop, said skin piercing end adapted to be displaced against a skin site for making an incision and producing a droplet of bodily fluid from the skin site; and
Specification