Blood and interstitial fluid sampling device
First Claim
1. A device for obtaining a sample of body fluid through the skin comprising:
- a housing member suitable for use and adapted to contain a needle for piercing the skin;
a spring member in the housing for urging the needle to protrude from the end of the housing sufficient to penetrate the skin;
a plunger member for retracting the needle against the spring tension and a trigger member to engage the plunger to hold the needle retracted until released by the trigger;
a stop member to limit the depth of needle penetration of the skin when released by the trigger;
a sample container communicating with the needle for receiving the sample from the needle;
a second spring for retracting the needle from the skin and a suction cam and plunger activated upon the retraction of the needle for drawing the sample of fluid which accumulates on the surface of the skin into the sample container; and
a skin stimulation member constructed for contacting and stimulating the skin by at least one of mechanical action, piezoelectric action, ultrasonic action, electrical action, and thermal action.
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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, drive mechanism, kneading or vibration mechanism, optional suction system, 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 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.
574 Citations
29 Claims
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1. A device for obtaining a sample of body fluid through the skin comprising:
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a housing member suitable for use and adapted to contain a needle for piercing the skin;
a spring member in the housing for urging the needle to protrude from the end of the housing sufficient to penetrate the skin;
a plunger member for retracting the needle against the spring tension and a trigger member to engage the plunger to hold the needle retracted until released by the trigger;
a stop member to limit the depth of needle penetration of the skin when released by the trigger;
a sample container communicating with the needle for receiving the sample from the needle;
a second spring for retracting the needle from the skin and a suction cam and plunger activated upon the retraction of the needle for drawing the sample of fluid which accumulates on the surface of the skin into the sample container; and
a skin stimulation member constructed for contacting and stimulating the skin by at least one of mechanical action, piezoelectric action, ultrasonic action, electrical action, and thermal action. - View Dependent Claims (2, 3, 4, 21)
an actuator to deploy the stimulation member in the down position before needle penetration of the skin for holding the skin taut; and
for a stop member providing accurate depth control of needle penetration.
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3. A device according to claim 1 further comprising a system for injecting a material into the skin.
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4. A device according to claim 2 wherein the skin stimulation member is adapted to stimulate the skin prior to or during the piercing of the skin.
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21. A device according to claim 1 wherein the portion of the device which pierces the skin is adapted to oscillate while inserted into the skin which oscillation is by vertical, horizontal, rotation or cyclic movement.
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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 retrieving the sample from the needle;
means for retracting the needle from the skin;
means for drawing the sample of fluid which accumulates on the surface of the skin into the sample container; and
means for stimulating the surface of the skin by at least one of mechanical action, piezoelectric action, electrical action, and thermal action. - 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;
a system for piercing the skin comprising a laser system or a fluid under pressure;
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 (22)
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9. 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 hand-held 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 and massaging the skin near the wound to stimulate the flow of fluid to and out of the wound. - View Dependent Claims (10, 11)
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12. A needle for piercing the skin comprising a hollow tube having a center line, and a pointed spade protrusion extending substantially longitudinally from a portion of one side of the end of the tube and angled toward the center line of the tube.
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13. 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 (14, 15)
an integral test unit for testing the sample.
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15. A device of claim 13 adapted to receive a test device unit which absorbs the sample from the wound site.
- 16. 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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18. 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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19. 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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20. 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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23. 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 (25)
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24. A method for collecting a sample body fluid comprising:
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mechanically massaging a skin area;
piercing the skin area to create a wound;
mechanically massaging the skin area adjacent the wound; and
collecting a fluid sample from the wound or the surface of the skin.
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28. A device for obtaining a sample of body fluid through the skin comprising:
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a housing member containing means for lancing the skin;
a stop member; and
a heated stimulation member adapted to contact the skin and stimulate blood flow. - View Dependent Claims (29)
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Specification