ELASTOMERIC TOROIDAL RING FOR BLOOD EXPRESSION
First Claim
1. An expression device, comprising:
- an expressing cap defining a lancet opening;
the expression cap having a skin contacting surface that is generally flat and positioned to face tissue during expression of body fluid;
the expression cap including an elastomeric ring extending around the lancet opening from the skin contacting surface, wherein the elastomeric ring includes elastomeric material; and
the expression cap having a beveled surface between the lancet opening and the elastomeric ring to enhance expression of the body fluid when the expression cap is pressed around an incision site.
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Accused Products
Abstract
An expression device includes an expressing cap that defines a lancet opening. The expression cap has a skin contacting surface that is generally flat and positioned to face tissue during expression of body fluid. The expression cap includes an elastomeric ring extending around the lancet opening from the skin contacting surface. The elastomeric ring is made from elastomeric material. The expression cap has a beveled surface between the lancet opening and the elastomeric ring to enhance expression of the body fluid when the expression cap is pressed around an incision site. It was discovered that when the beveled was angled at about 20°, expression of the body fluid was significantly enhanced.
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Citations
16 Claims
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1. An expression device, comprising:
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an expressing cap defining a lancet opening; the expression cap having a skin contacting surface that is generally flat and positioned to face tissue during expression of body fluid; the expression cap including an elastomeric ring extending around the lancet opening from the skin contacting surface, wherein the elastomeric ring includes elastomeric material; and the expression cap having a beveled surface between the lancet opening and the elastomeric ring to enhance expression of the body fluid when the expression cap is pressed around an incision site. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method, comprising:
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forming an incision in skin; and expressing body fluid from the incision by pressing around the incision in the skin an expression cap that includes an elastomeric ring made from elastomeric material and a beveled surface located inside the elastomeric ring. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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Specification