Title :
Detection of puncturing vessel wall for automatic blood sampling
Author :
Saito, Hirokazn ; Togawa, Tatsuo
Author_Institution :
Inst. of Biomater. & Bioeng., Tokyo Med. & Dental Univ., Japan
Abstract :
To achieve automatic needle puncturing for automatic blood sampling, we attempted to detect blood flowing into the needle by measuring the electric impedance between the inside of the needle and the skin. The needle with electrode was set on a syringe with a force sensor, and used to puncture a rabbit´s vein. Electric impedance suddenly decreased after a final peak of puncturing force. This result shows that the changes of electric impedance of the needle can be applied to control needle insertion for automatic blood sampling
Keywords :
biocontrol; bioelectric phenomena; biomedical electrodes; biomedical transducers; blood; blood vessels; electric impedance measurement; force sensors; skin; automatic blood sampling; automatic needle puncturing; electric impedance; electrode; force sensor; needle; needle insertion control; puncturing force; rabbit vein; skin; syringe; vessel wall puncture detection; Automatic control; Blood; Electric variables measurement; Electrodes; Force sensors; Impedance measurement; Needles; Sampling methods; Skin; Veins;
Conference_Titel :
[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-5674-8
DOI :
10.1109/IEMBS.1999.804021
