A piezoelectric plethysmograph sensor based on a Pt wire implanted lead lanthanum zirconate titanate bulk ceramic.
Sensors (Basel)
; 10(8): 7146-56, 2010.
Article
em En
| MEDLINE
| ID: mdl-22163596
This work reports on the development of a Lead Lanthanum Zirconate Titanate (PLZT) bulk ferroelectric poled ceramic structure as a Piezoelectric Plethysmograph (PZPG) sensor. The ceramic was implanted during its fabrication with a platinum (Pt) wire which works as an internal electrode. The ceramic was then submitted to an experimental setup in order to validate and determine the Pt-wire mechanical effects. This PZPG sensor was also mounted on a finger splint in order to measure the blood flow that results from the pulsations of blood occurring with each heartbeat. Fingertip pulses were recorded jointly with an ECG signal from a 25 year old male to compare the time shift; the PZPG sensor guarantees the electrical isolation of the patient. The proposed PZPG has several advantages: it can be adjusted for fingertip measurements, but it can easily be extended by means of spare bands, therefore making possible PZPG measurements from different body locations, e.g., forehead, forearm, knee, neck, etc.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Platina
/
Pletismografia
/
Titânio
/
Zircônio
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Técnicas Biossensoriais
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Cerâmica
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Lantânio
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Chumbo
Limite:
Adult
/
Humans
/
Male
Idioma:
En
Revista:
Sensors (Basel)
Ano de publicação:
2010
Tipo de documento:
Article
País de afiliação:
México
País de publicação:
Suíça