Apparatus and method for extracting bodily fluid utilizing a flat lancet
First Claim
Patent Images
1. An apparatus, comprising:
- a flat lancet adapted to form a breach in the skin surface, said lancet including a longitudinal axis, a thickness being at least 0.05 millimeters and at most 0.15 millimeters to minimize the pain associated with the lancet penetrating the skin, a width being at least 0.1 millimeters and at most 1.5 millimeters, a first cutting edge adapted to penetrate the skin, and a second cutting edge adapted to penetrate the skin, wherein said first and second cutting edges are each inclined at least thirty degrees (30°
) and at most forty degrees (40°
) from said longitudinal axis; and
an actuation member attached to said flat lancet, wherein said actuation member moves said first cutting edge to penetrate the skin.
2 Assignments
0 Petitions
Accused Products
Abstract
A bodily fluid sampling device is operable to rupture the skin surface at normal and oblique angles utilizing a flat lancet of specified thickness and at least one cutting surface inclined less than eighty degrees (80°) from the longitudinal axis of the flat lancet. The flat lancet thickness and cutting surface geometry minimize pain while maximizing the amount of emerged bodily fluid. The device limits the depth to which the flat lancet penetrates the skin to further minimize pain and may urge the bodily fluid from the rupture site. The bodily fluid emerging from the rupture site is transported to a test device that tests the bodily fluid for particular properties and characteristics.
-
Citations
56 Claims
-
1. An apparatus, comprising:
-
a flat lancet adapted to form a breach in the skin surface, said lancet including a longitudinal axis, a thickness being at least 0.05 millimeters and at most 0.15 millimeters to minimize the pain associated with the lancet penetrating the skin, a width being at least 0.1 millimeters and at most 1.5 millimeters, a first cutting edge adapted to penetrate the skin, and a second cutting edge adapted to penetrate the skin, wherein said first and second cutting edges are each inclined at least thirty degrees (30°
) and at most forty degrees (40°
) from said longitudinal axis; and
an actuation member attached to said flat lancet, wherein said actuation member moves said first cutting edge to penetrate the skin.
-
-
2. An apparatus, comprising:
-
a flat lancet adapted to form a breach in the skin surface, said lancet including a longitudinal axis, a thickness, and a first cutting edge adapted to penetrate the skin, wherein said first cutting edge is inclined less than eighty degrees (80°
) from said longitudinal axis and said thickness is at least 0.05 millimeters and at most 0.3 millimeters to minimize the pain associated with the lancet penetrating the skin; and
an actuation member attached to said flat lancet, wherein said actuation member moves said first cutting edge to penetrate the skin. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
-
-
25. A method, comprising:
-
placing a sampling device in contact with the skin, the sampling device including a generally planar lancet, the generally planar lancet having a thickness of at least 0.05 millimeters and at most 0.3 millimeters, and the generally planar lancet having at least one cutting edge;
moving the generally planar lancet in relation to the skin surface and along a translation axis; and
penetrating the skin surface at a penetration site with the generally planar lancet wherein the at least one cutting edge is inclined less than eighty degrees (80°
) from the translation axis. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
-
-
37. An apparatus for extracting bodily fluid, comprising:
-
an incision forming member adapted for cutting the skin surface, wherein said incision forming member includes a side surface and at least one cutting facet inclined less than eighty degrees (80°
) from said side surface, and wherein said incision forming member has a thickness greater than 0.05 millimeters and less than 0.3 millimeters; and
means for moving at least a portion of said incision forming member below the skin surface at an incision location. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45)
-
-
46. An apparatus for rupturing the skin, comprising:
-
a flat lancet for rupturing the skin at a rupture site, said flat lancet comprising a first side and a cutting surface, said cutting surface produced by photoetching, wherein said photoetching is performed on said first side; and
an actuation member, wherein said actuation member moves said flat lancet to rupture the skin at the rupture site. - View Dependent Claims (47, 48, 49, 50, 51, 52, 53, 54, 55, 56)
-
Specification