Precision depth control lancing tip
First Claim
Patent Images
1. A bodily fluid sampling device, comprising:
- an incision forming member adapted to form an incision in skin;
an expression member defining an expression opening configured to express fluid from the incision;
a reference member defining an aperture through which the incision forming member extends when forming the incision, the reference member having a reference surface received in the expression opening during formation of the incision to contact the skin and limit penetration depth of the incision forming member into the skin; and
a retraction mechanism coupled to the reference member to retract the reference surface from the expression opening.
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Accused Products
Abstract
A bodily fluid sampling device is operable to lance with a precise depth and express fluid from both fingertip and alternate sites. In one form, the device is operable to adjust the penetration depth of the lancet into the skin. The bodily fluid sampling device includes a lancet adapted to form an incision in skin. A skin contacting member has an orifice through which the lancet extends when lancing the skin. The orifice has a first opening size that is sized to flatten the skin around the lancet during lancing. The orifice has a second opening size that is larger than the first opening size after the incision is formed to express fluid from the incision.
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Citations
45 Claims
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1. A bodily fluid sampling device, comprising:
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an incision forming member adapted to form an incision in skin;
an expression member defining an expression opening configured to express fluid from the incision;
a reference member defining an aperture through which the incision forming member extends when forming the incision, the reference member having a reference surface received in the expression opening during formation of the incision to contact the skin and limit penetration depth of the incision forming member into the skin; and
a retraction mechanism coupled to the reference member to retract the reference surface from the expression opening. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A bodily fluid sampling device, comprising:
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a skin lancing member adapted to form an incision in skin; and
a skin contacting member having an orifice through which the skin lancing member extends to form the incision, the orifice having a first opening size that is sized to flatten the skin around the skin lancing member while the skin lancing member forms the incision and a second opening size that is larger than the first opening size after the incision is formed to express fluid from the incision. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A bodily fluid sampling device, comprising:
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an incision forming member operable to form an incision in skin;
a reference member having a reference surface positioned proximal the incision forming member to engage the skin around the incision forming member during formation of the incision; and
means for adjusting penetration depth of the incision forming member into the skin. - View Dependent Claims (26, 27, 28, 29)
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30. A method, comprising:
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forming an incision in the skin with a lancing member of a sampling device through an aperture in the device that has a first opening size;
configuring the aperture to a second opening size that is larger than the first opening size; and
expressing fluid from the incision with the aperture at the second opening size. - View Dependent Claims (31, 32)
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33. A device for sampling a bodily fluid from an incision in a user'"'"'s skin, comprising:
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an expression member including a first, skin-contacting surface defining a first opening;
a depth-control member including a second, skin-contacting surface defining a second opening smaller than the first opening, said depth-control member being movable between first and second positions relative to said expression member, said depth-control member in the first position being retracted relative to said expression member to be displaced from skin received in the first opening of said expression member, said depth-control member in the second position being positioned relative to said expression member to contact skin received in the first opening of said expression member; and
an incision forming member extendable through the second opening of said depth-control member in the second, skin-contacting position. - View Dependent Claims (34, 35, 36, 37)
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38. A device for sampling a bodily fluid from an incision in a user'"'"'s skin, comprising:
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a skin-contacting member including an end portion configurable between two positions, said skin-contacting member in the first position defining a first skin-contacting surface including a depth-control opening, said skin-contacting member in the second position defining a second skin-contacting surface including an expression opening larger than the depth-control opening; and
an incision forming member extendable through the depth-control opening of said skin-contacting member.
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39. A method for sampling a bodily fluid from an incision in a user'"'"'s skin, comprising:
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providing a sampling device including an expression member including a first, skin-contacting surface defining a first opening, a depth-control member including a second, skin-contacting surface defining a second opening smaller than the first opening, the depth-control member being movable between first and second positions relative to the expression member, the depth-control member in the first position being retracted relative to the expression member to be displaced from skin received in the first opening of the expression member, the depth-control member in the second position being positioned relative to the expression member to contact skin received in the first opening of the expression member, and an incision forming member extendable through the second opening of the depth-control member in the second, skin-contacting position placing the sampling device against the user'"'"'s skin to engage the skin against the skin-contacting surface of the expression member;
positioning the depth-control member in the second position to engage the user'"'"'s skin;
advancing the incision forming member relative to the expression member to incise the skin to produce a bodily fluid from the incision; and
withdrawing the depth-control member to the first position displaced from the user'"'"'s skin. - View Dependent Claims (40, 41, 42, 43)
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44. A method for sampling a bodily fluid from an incision in a user'"'"'s skin, comprising:
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providing a sampling device comprising a skin-contacting member including an end portion configurable between two positions, the skin-contacting member in the first position defining a first skin-contacting surface including a depth-control opening, the skin-contacting member in the second position defining a second skin-contacting surface including an expression opening larger than the depth-control opening, and an incision forming member extendable through the depth-control opening of the skin-contacting member placing the sampling device against the user'"'"'s skin with the skin-contacting member in the first, depth-control position to engage the skin against the skin-contacting surface and received within the depth-control opening;
advancing the incision forming member through the depth-control opening to incise the skin;
withdrawing the incision forming member from the depth-control opening to be displaced from the user'"'"'s skin; and
reconfiguring the end portion of the skin-contacting member to the second position while maintaining contact between the skin-contacting member and the skin to receive the skin within the expression opening. - View Dependent Claims (45)
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Specification