Fingertip conforming fluid expression cap
First Claim
1. A bodily fluid sampling device, comprising:
- an incision forming device to form an incision in a finger; and
an expression cap defining an opening through which the incision forming device forms an incision, the expression cap having an expression surface to express fluid from the incision, the expression surface having at least two opposing compression surfaces with a negative sigmoidal shape to enhance expression of body fluid from the incision, the expression cap defining a relief notch between the compression surfaces, the relief notch being sized to receive the finger to permit the compression surfaces to first contact the finger when the expression surface is pressed against the finger.
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Accused Products
Abstract
A bodily fluid sampling device includes an incision forming device to form an incision in a finger and an expression cap. The expression cap has an opening through which the incision forming device forms an incision and an expression surface to express fluid from the incision. The expression surface has at least two opposing compression surfaces with a negative sigmoidal shape to enhance expression of body fluid from the incision. The expression cap defines a relief notch between the compression surfaces, and the relief notch is sized to receive the finger, or some other body part, to permit the compression surfaces to first contact the finger when the expression surface is pressed against the finger.
190 Citations
22 Claims
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1. A bodily fluid sampling device, comprising:
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an incision forming device to form an incision in a finger; and
an expression cap defining an opening through which the incision forming device forms an incision, the expression cap having an expression surface to express fluid from the incision, the expression surface having at least two opposing compression surfaces with a negative sigmoidal shape to enhance expression of body fluid from the incision, the expression cap defining a relief notch between the compression surfaces, the relief notch being sized to receive the finger to permit the compression surfaces to first contact the finger when the expression surface is pressed against the finger. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A bodily fluid sampling device, comprising:
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means for forming an incision in a body part; and
an expression cap defining an opening through which the means for forming the incision forms the incision, the expression cap having an expression surface, the expression surface defining a relief notch, wherein the expression surface is shaped to apply a generally even force against the body part when expressing body fluid from the incision. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method, comprising:
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providing a sampling device that has an expression surface with at least two opposing compression surfaces that have a negative sigmoidal shape and a relief notch defined between the compression surfaces that is shaped to generally conform to a body part;
placing the expression surface against the body part with at least a portion of the body part received in the relief notch;
forming an incision in the body part with the sampling device; and
expressing body fluid from the incision by exerting pressure between the body part and the expression surface. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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Specification