Extraction and transportation of blood for analysis
First Claim
1. A device for sampling blood from the skin of a patient, the device comprising:
- (a) fluid-conducting plate unit having one or more openings for facing against the skin of a patient, through which openings one or more lancets can pass to puncture the skin to result in a puncture wound, the plate unit having channels each for conducting fluid from the puncture wound; and
(b) one or more lancets positioned near the plate unit associated therewith for passing through the one or more openings to puncture the skin when pressed into the skin;
wherein the plate unit comprises a first channel for conducting away a first portion of the fluid and a second channel for conducting a second portion of the fluid.
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Accused Products
Abstract
A device for sampling blood from the skin of a patient by puncture. The device includes one or more lancets for lancing the skin and a fluid-conducting plate unit for transporting blood from the lancing wound. The plate unit has one or more channels for conducting fluid to one or more target locations. Preferably there is a first channel for conducting away a first portion of fluid that contains more of a fluid that is emitted initially (initial fluid) from the puncture wound and a second channel for conducting a second portion of fluid that contains less of the initial fluid from the puncture wound. Blood is drawn into the channels by capillary force. The device can be used to lance the skin and obtain a representative sample of blood with relatively simple procedures.
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Citations
21 Claims
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1. A device for sampling blood from the skin of a patient, the device comprising:
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(a) fluid-conducting plate unit having one or more openings for facing against the skin of a patient, through which openings one or more lancets can pass to puncture the skin to result in a puncture wound, the plate unit having channels each for conducting fluid from the puncture wound; and (b) one or more lancets positioned near the plate unit associated therewith for passing through the one or more openings to puncture the skin when pressed into the skin; wherein the plate unit comprises a first channel for conducting away a first portion of the fluid and a second channel for conducting a second portion of the fluid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A device for sampling blood from the skin of a patient, the device comprising:
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(a) fluid-conducting plate unit having one or more openings for facing against the skin of a patient, through which openings one or more lancets can pass to puncture the skin to result in a puncture wound, the plate unit having multiple channels each for conducting fluid from the puncture wound; and (b) one or more lancets positioned near the plate unit associated therewith for passing through the one or more openings to puncture the skin when pressed into the skin; wherein the plate unit'"'"'s openings against the skin are surrounded by a resilient flexible lip that applies a radially outward force to the skin when the lip is pressed against the skin. - View Dependent Claims (12)
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13. A device for sampling blood from the skin of a patient, the device comprising:
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(a) fluid-conducting plate unit having one or more openings for facing against the skin of a patient, through which openings one or more lancets can pass to puncture the skin to result in a puncture wound, the plate unit having multiple channels each for conducting fluid from the puncture wound; and (b) a plurality of lancets positioned near the plate unit associated therewith for passing through the one or more openings to puncture the skin when pressed into the skin; wherein each of the lancets is at less than a distance DD from another of the lancets, the distance DD being chosen to be about the discriminatable distance between distinct pain perception points in the patient, such that the patient would perceive a single puncture when two lancets at less than distance DD apart puncture the skin.
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14. A device for sampling blood from the skin of a patient, the device comprising:
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(a) fluid-conducting plate unit having one or more openings for facing against the skin of a patient, through which openings one or more lancets can pass to puncture the skin to result in a puncture wound, the plate unit having one of more channels each for conducting fluid from the puncture wound; and (b) one or more lancets positioned near the plate unit associated therewith for passing through the one or more openings to puncture the skin when pressed into the skin; the device additionally comprising a plurality of lancets and wherein the plate unit has a plurality of openings each for allowing a lancet to pass through to puncture the skin. - View Dependent Claims (15)
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16. A device for sampling blood from the skin of a patient, the device comprising:
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(a) fluid-conducting plate unit having one or more openings for facing against the skin of a patient, through which openings one or more lancets can pass to puncture the skin to result in a puncture wound, the plate unit having multiple channels each for conducting fluid from the puncture wound; and (b) a plurality of lancets positioned near the plate unit associated therewith for passing through the one or more openings to puncture the skin when pressed into the skin; the device further comprising a top from which the one or more lancets are anchored such that pressing the top causes the one or more lancets to press against the skin. - View Dependent Claims (17)
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18. A device for sampling blood from the skin of a patient, the device comprising:
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(a) fluid-conducting plate unit having one or more openings for facing against the skin of a patient, through which openings one or more lancets can pass to puncture the skin to result in a puncture wound, the plate unit having one or more channels each for conducting fluid from the puncture wound; and (b) a plurality of lancets positioned near the plate unit associated therewith for passing through the one or more opening to puncture the skin when pressed into the skin; wherein at least one of the one or more channels has a flaring portion to inhibit a bubble from entering into the channel.
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19. A device for puncturing the skin of a patient to sample blood, comprising:
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(a) fluid-conducting plate unit having one or more openings for facing against the skin being punctured, the plate unit having a first channel for conducting away a first portion of fluid that contains more of a fluid that is emitted initially (initial fluid) from the skin after puncture and a second channel for conducting a second portion of fluid containing less of the initial fluid; and (b) a plurality of lancets positioned near the plate unit, the lancets each passing through one of the one or more openings on the plate unit and puncturing the skin when pressed against the skin to yield blood. - View Dependent Claims (20)
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21. A device for puncturing the skin of a patient to sample blood, comprising:
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(a) fluid-conducting plate unit having one or more openings for facing against the skin being punctured, through which openings a plurality of lancets can pass to puncture the skin to yield blood, the plate unit having two or more channels each for conducting a portion of fluid from the puncture wound; and (b) one or more lancets positioned near the plate unit associated therewith for passing through the one or more openings to puncture the skin when pressed into the skin; wherein the plate unit comprises a first channel for conducting away a first portion of the fluid and a second channel for conducting a second portion of the fluid.
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Specification