Blood and interstitial fluid sampling device
First Claim
5. A device for obtaining a sample of body fluid through the skin comprising:
- a housing member adapted to contain a needle for piercing the skin;
a drive means in the housing for urging the needle to protrude from the end of the housing sufficient to penetrate the skin;
a stop member to limit the depth of needle penetration into the skin by the device means;
a sample container communicating with the needle for receiving the sample from the needle;
means for retracting the needle from the skin; and
means for drawing the sample of fluid which accumulates on the surface of the skin into the sample container upon needle retraction.
4 Assignments
0 Petitions
Accused Products
Abstract
A device and method for lancing a patient, virtually simultaneously producing and collecting a small fluid sample from a body. The device comprises a blood collection system including a lancing needle (16), drive mechanism (11), kneading or vibration mechanism (25), optional suction system (7), and sample ejection mechanism. The device is preferably sized to be hand-held in one hand and operable with one hand. The device can optionally contain integral testing or analysis component (83) for receiving the sample and providing testing or analysis indication or readout for the user. A method involves piercing the skin at a rapid rate, kneading the surrounding area by ultrasonic action, piezoelectric or mechanical oscillation to stimulate the blood flow from the wound, drawing the fluid using a pumping system.
89 Citations
47 Claims
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5. A device for obtaining a sample of body fluid through the skin comprising:
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a housing member adapted to contain a needle for piercing the skin;
a drive means in the housing for urging the needle to protrude from the end of the housing sufficient to penetrate the skin;
a stop member to limit the depth of needle penetration into the skin by the device means;
a sample container communicating with the needle for receiving the sample from the needle;
means for retracting the needle from the skin; and
means for drawing the sample of fluid which accumulates on the surface of the skin into the sample container upon needle retraction. - View Dependent Claims (6, 7)
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8. A device for obtaining a sample of body fluid through the skin comprising:
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a housing member suitable for hand held use and adapted to contain a member or system for piercing the skin;
a sample collection tube positioned to collect a sample of fluid emerging from the pierced skin; and
an actuator for causing the member or system to pierce the skin. - View Dependent Claims (9, 10, 11, 12, 15, 16, 17, 20)
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13. A multichambered tube for use in a body fluid sampling device for obtaining a sample of fluid through the skin comprising:
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one chamber in the tube containing a needle adapted for piercing the skin; and
a second chamber in the tube adapted for receiving a sample of fluid from the pierced skin.
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14. A device for collecting a sample of body fluid from a wound in the skin comprising:
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a housing member suitable for use containing a chamber for collecting a sample of fluid emerging from the wound; and
a skin stimulation member movably positioned at the end of the housing member for contacting a massaging the skin near the wound to stimulate the flow of fluid to and out of the wound. - View Dependent Claims (18, 30)
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19. A needle for piercing the skin comprising a hollow tube having a pointed spade protrusion extending substantially longitudinally from a portion of one side of the end of the tube.
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21. A needle having an angled or beveled tip for piercing the skin comprising a hollow tube wherein the longitudinal passageway in the tube is eccentrically located in the tube.
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22. A device for use in a body fluid sampling device for obtaining a sample through the skin comprising:
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a standoff member adapted for contacting the skin;
a sample collection tube positioned in the standoff member for receiving the fluid sample;
a lancet member movably positioned in the standoff member adjacent to the tube for piercing the skin; and
electrodes positioned in the standoff member adapted for connection to a sensor to sense the presence of fluid within the standoff member. - View Dependent Claims (1, 2, 3, 4, 23, 24, 25, 27, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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24-1. A device according to claim 23 wherein the test unit comprises a calorimetric test unit or an electrochemical test unit.
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26. A body fluid collection device comprising a capillary tube flared on one end for contacting the skin and having a suction member positioned on the opposite end.
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28. A device for use in a body fluid sampling device for obtaining a sample through the skin comprising:
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an elongated holder member having a plurality of passageways extending longitudinally through the member; and
lancet members positioned in said passageways and adapted for creating a plurality of wounds in the skin when contacted with the skin.
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29. A device for use in a body fluid sampling device for obtaining a sample through the skin comprising:
a plate member having a plurality of sharp protrusion extending from one side of the plate member adapted for creating a plurality of wounds in the skin when contacted with the skin.
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31. A lancing device for piercing the skin comprising multiple lancing members formed from needles or barbs.
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32. A method of collecting a sample of body fluid which includes piercing the skin;
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mechanically stimulating the wound created by piercing the skin;
collecting the sample which results from the stimulating; and
dispensing the sample.
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44. A method of collecting a sample of body fluid comprising:
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piercing the skin with a hypodermic needle;
withdrawing the needle from the skin;
massaging an area adjacent the wound; and
collecting a sample of fluid from the surface of the skin into the hypodermic needle. - View Dependent Claims (46, 47)
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45. A method for collection a sample of a body fluid comprising:
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mechanically massaging a skin area;
piercing the skin to create a wound;
mechanically massaging a skin area adjacent the wound; and
collecting a fluid sample from the wound or the surface of the skin.
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Specification