Blood acquisition suspension system
First Claim
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1. A body fluid sampling device, comprising:
- a housing configured to contact tissue;
an integrated lancing-sampling device including a casing and a lancet for lancing an incision in the tissue slidably received in the casing, wherein the casing defines a sampling cavity for drawing body fluid from the incision, wherein the integrated lancing-sampling device is disposed inside the housing, wherein the casing of the integrated lancing-sampling device forms a reference surface upon which penetration depth of the lancet is based when the casing is pressed against the tissue, wherein the casing and the lancet of the lancing-sampling device are configured to be removed from the housing as a single disposable unit; and
a positioner mechanism configured to retract the casing of the integrated lancing-sampling device from contact with the tissue after cutting the incision to a retracted position to promote flow of body fluid from the incision while the housing remains in contact with the tissue, the positioner mechanism being configured to subsequently move the integrated lancing-sampling device from the retracted position to a collection position where the body fluid is collected, wherein the casing of the integrated lancing-sampling device is positioned closer to the tissue at the collection position than at the retracted position.
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Abstract
A body fluid sampling device includes a firing mechanism that is configured to be automatically cocked and fired. In one form, the device includes an electric motor that is operable to cock the firing mechanism and fire an integrated lancet/sampling device to form an incision in skin. Subsequent to formation of the incision, the integrated lancet device is temporarily removed from the skin to promote bleeding from the incision. After a specified period of time, the integrated lancet device is then repositioned against the skin in order to collect a fluid sample.
59 Citations
17 Claims
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1. A body fluid sampling device, comprising:
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a housing configured to contact tissue; an integrated lancing-sampling device including a casing and a lancet for lancing an incision in the tissue slidably received in the casing, wherein the casing defines a sampling cavity for drawing body fluid from the incision, wherein the integrated lancing-sampling device is disposed inside the housing, wherein the casing of the integrated lancing-sampling device forms a reference surface upon which penetration depth of the lancet is based when the casing is pressed against the tissue, wherein the casing and the lancet of the lancing-sampling device are configured to be removed from the housing as a single disposable unit; and a positioner mechanism configured to retract the casing of the integrated lancing-sampling device from contact with the tissue after cutting the incision to a retracted position to promote flow of body fluid from the incision while the housing remains in contact with the tissue, the positioner mechanism being configured to subsequently move the integrated lancing-sampling device from the retracted position to a collection position where the body fluid is collected, wherein the casing of the integrated lancing-sampling device is positioned closer to the tissue at the collection position than at the retracted position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A body fluid sampling device, comprising:
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an integrated lancing-sampling device including a lancet configured to lance an incision in tissue; a firing mechanism coupled to the integrated lancing-sampling device, the firing mechanism including a spring configured to fire the lancet; a cocking mechanism coupled to the spring configured to place the spring in a cocked state, wherein the cocking mechanism includes an electric motor configured to deform the spring for storing potential energy in the spring when in the cocked state; wherein the integrated lancing-sampling device includes a casing; wherein the motor is configured to retract the integrated lancing-sampling device from contact with the tissue after cutting the incision and subsequently move the integrated lancing-sampling device to a collection position where the body fluid is collected; and wherein the casing of the integrated lancing-sampling device is located closer to the tissue at the collection position than when retracted. - View Dependent Claims (11, 12)
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13. A method, comprising:
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placing a housing of a body fluid sampling device against tissue; lancing tissue by firing a lancet of an integrated lancing-sampling device while the housing remains in contact with the tissue, wherein the lancet of the integrated lancing-sampling device is slidably received in a casing, wherein the casing contacts the tissue during said lancing, wherein the casing defines a sampling cavity for drawing body fluid from an incision; retracting the casing of the integrated lancing-sampling device from contact with the tissue to a retracted position to promote flow of body fluid from the incision after said lancing, wherein the housing remains in contact with the tissue during said retracting; moving the integrated lancing-sampling device from the retracted position to a collection position after said retracting the casing, wherein the housing remains in contact with the tissue during said moving, wherein the casing of the integrated lancing-sampling device is located closer to the tissue at the collection position than at the retracted position; and collecting the body fluid by drawing the body fluid from the incision into the sampling cavity of the casing while the housing remains in contact with the tissue. - View Dependent Claims (14, 15)
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16. A method, comprising:
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cocking a firing mechanism to a cocked state by compressing a spring of the firing mechanism with an electric motor; firing a lancet with the firing mechanism by releasing the spring from the cocked state; wherein the lancet is incorporated into an integrated lancing-sampling device in which the lancet is slidably received in a casing of the integrated lancing-sampling device, wherein the casing defines a sampling cavity for drawing body fluid from an incision; drawing the body fluid from the incision into the sampling cavity of the integrated lancing-sampling device; further comprising placing a housing of a body fluid sampling device against tissue, wherein the body fluid sampling device includes the firing mechanism; keeping the housing in contact with the tissue during said firing; retracting the casing of the integrated lancing-sampling device from contact with the tissue to a retracted position to promote flow of body fluid from the incision after said firing, wherein the housing remains in contact with the tissue during said retracting; and moving the integrated lancing-sampling device from the retracted position to a collection position after said retracting the casing, wherein the housing remains in contact with the tissue during said moving. - View Dependent Claims (17)
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Specification