Capacitance-based dose measurements in syringes

Details Capacitance-based dose measurements in syringes Capacitance-based dose measurements in syringes

1997-11-18

2000-08-29

Bockelman, Mark

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604246, 222 23, 222 30, A61M 500

Patent

active

061101486

ABSTRACT:
Measurements of insulin quantities in a syringe are performed capacitively in an integrated insulin dose recorder/blood glucose meter. The syringe is placed in a holder before and after the administration of the dose. Capacitor electrodes may be situated within the syringe and/or outside the syringe in various geometries. Liquid quantities in the syringe are determined by comparing capacitive response patterns of the syringe with calibration data stored in the device. Dose histories are downloaded to a patient computer for transfer to a clinician's computer. Standard or customized syringes may be used.

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patent: 5569212 (1996-10-01), Brown
patent: 5704922 (1998-01-01), Brown
patent: 5720733 (1998-02-01), Brown
patent: 5882338 (1999-03-01), Gray

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