Blood and interstitial fluid sampling device
First Claim
1. A device for sampling body fluid, comprising:
- a body portion;
a needle comprising a sharpened distal tip and shaft portion which is slidably disposed within the body portion;
a spring mechanism in the body portion wherein the spring mechanism is configured to move the needle in a first direction relative to the body portion to form an incision in tissue;
a sample container communicating with the needle for receiving the sample from the needle; and
a retraction mechanism configured to retract the needle into the body portion after forming the incision.
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.
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Citations
14 Claims
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1. A device for sampling body fluid, comprising:
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a body portion; a needle comprising a sharpened distal tip and shaft portion which is slidably disposed within the body portion; a spring mechanism in the body portion wherein the spring mechanism is configured to move the needle in a first direction relative to the body portion to form an incision in tissue; a sample container communicating with the needle for receiving the sample from the needle; and a retraction mechanism configured to retract the needle into the body portion after forming the incision. - View Dependent Claims (2, 3)
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4. A device for sampling body fluid, comprising:
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a body portion configured to contain a needle for piercing skin, wherein the needle is slidably disposed within the body portion; a means for driving the needle to form an incision in skin; a sample container in fluid communication with the needle for receiving the body fluid sample; and a means for retracting the needle from the skin. - View Dependent Claims (5, 6, 7, 8, 9)
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10. A tissue penetrating device, comprising:
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a housing; at least one penetrating member configured to form an incision in tissue, the at least one penetrating member slidably received in the housing; a penetrating member driver coupled to the at least one penetrating member; a stop member configured to limit the depth of penetration of the at least one penetrating member into the tissue; and a retraction mechanism configured to retract the at least one penetrating member after forming the incision. - View Dependent Claims (11, 12, 13, 14)
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Specification