SENSOR FOR PERCUTANEOUS INTRAVASCULAR DEPLOYMENT WITHOUT AN INDWELLING CANNULA
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Abstract
The present invention relates to a sensor for percutaneous insertion and intravascular residence without an indwelling cannula. In preferred embodiments, a glucose sensor is inserted into a blood vessel using a removable cannula. After the cannula is removed, the glucose sensor remains within the blood vessel by itself and forms a seal with the patient'"'"'s tissue.
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Citations
56 Claims
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1-35. -35. (canceled)
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36. A method for introducing an analyte sensor into a patient, comprising:
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providing an introducer assembly comprising a piercing member associated with a removable cannula, wherein a piercing tip of the piercing member extends distally beyond the removable cannula; inserting the introducer assembly into the patient; retracting the piercing member from the removable cannula, while leaving the removable cannula in the patient; providing an optical analyte sensor comprising a fluorescent indicator system disposed along a distal end region and adapted to generate an optical signal related to the patient'"'"'s analyte level in response to light, an elongate optical fiber, and an optical coupling disposed along a proximal end region; inserting the optical analyte sensor through the removable cannula and into the patient; retracting the removable cannula from the patient, while leaving the sensor in the patient; and removing the removable cannula from the sensor. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56)
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Specification