Capacitor Device for Air Bubbles Monitoring
Emboli or Air bubble detection is vital for many medical procedures involving Extracorporeal Blood Circuits or ECBC e.g. hemodialysis, hemofiltration and cardiopulmonary bypass .This risk has increased as negative pressures are developed between the arterial fistula needle and the blood pump in the...
| Main Authors: | , , , |
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| Format: | Citation Index Journal |
| Language: | English |
| Published: |
IJENS Publishers
2009
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| Subjects: | |
| Online Access: | http://scholars.utp.edu.my/id/eprint/1110/ http://scholars.utp.edu.my/id/eprint/1110/1/IJECS.pdf |
| _version_ | 1848659078663897088 |
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| author | Abdalrahman , Mawahib Gafare Adam, Abdallah Belal Dennis , John Ojur Steele, Gail Sylvia |
| author_facet | Abdalrahman , Mawahib Gafare Adam, Abdallah Belal Dennis , John Ojur Steele, Gail Sylvia |
| author_sort | Abdalrahman , Mawahib Gafare |
| building | UTP Institutional Repository |
| collection | Online Access |
| description | Emboli or Air bubble detection is vital for many medical procedures involving Extracorporeal Blood Circuits or ECBC e.g. hemodialysis, hemofiltration and cardiopulmonary bypass .This risk has increased as negative pressures are
developed between the arterial fistula needle and the blood pump in the ECBC machine. This study suggests a capacitor device to detect the presence of air bubbles by measuring change in the output voltage. The capacitor has two platinum plates with area 0.75 cm2. The distance between the plates is 1 cm and Dextran70 fluid is introduced as the dielectric material between the plates. This solution replaces blood to avoid clotting whilst conducting the experiment. This device is connected with a resistor i.e. 100 kΩ to form a low pass filter circuit. The change of output voltage is measured when there is a change of dielectric material of the capacitor due to the appearance of an air bubble in the stream. The sensitivity of the capacitor device is found to be 8.28 mV/ nF at 2 MHz. |
| first_indexed | 2025-11-13T07:24:43Z |
| format | Citation Index Journal |
| id | oai:scholars.utp.edu.my:1110 |
| institution | Universiti Teknologi Petronas |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-13T07:24:43Z |
| publishDate | 2009 |
| publisher | IJENS Publishers |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | oai:scholars.utp.edu.my:11102017-01-19T08:25:04Z http://scholars.utp.edu.my/id/eprint/1110/ Capacitor Device for Air Bubbles Monitoring Abdalrahman , Mawahib Gafare Adam, Abdallah Belal Dennis , John Ojur Steele, Gail Sylvia TK Electrical engineering. Electronics Nuclear engineering Emboli or Air bubble detection is vital for many medical procedures involving Extracorporeal Blood Circuits or ECBC e.g. hemodialysis, hemofiltration and cardiopulmonary bypass .This risk has increased as negative pressures are developed between the arterial fistula needle and the blood pump in the ECBC machine. This study suggests a capacitor device to detect the presence of air bubbles by measuring change in the output voltage. The capacitor has two platinum plates with area 0.75 cm2. The distance between the plates is 1 cm and Dextran70 fluid is introduced as the dielectric material between the plates. This solution replaces blood to avoid clotting whilst conducting the experiment. This device is connected with a resistor i.e. 100 kΩ to form a low pass filter circuit. The change of output voltage is measured when there is a change of dielectric material of the capacitor due to the appearance of an air bubble in the stream. The sensitivity of the capacitor device is found to be 8.28 mV/ nF at 2 MHz. IJENS Publishers 2009-12-10 Citation Index Journal PeerReviewed application/pdf en http://scholars.utp.edu.my/id/eprint/1110/1/IJECS.pdf Abdalrahman , Mawahib Gafare and Adam, Abdallah Belal and Dennis , John Ojur and Steele, Gail Sylvia (2009) Capacitor Device for Air Bubbles Monitoring. [Citation Index Journal] http://www.ijens.org |
| spellingShingle | TK Electrical engineering. Electronics Nuclear engineering Abdalrahman , Mawahib Gafare Adam, Abdallah Belal Dennis , John Ojur Steele, Gail Sylvia Capacitor Device for Air Bubbles Monitoring |
| title | Capacitor Device for Air Bubbles Monitoring |
| title_full | Capacitor Device for Air Bubbles Monitoring |
| title_fullStr | Capacitor Device for Air Bubbles Monitoring |
| title_full_unstemmed | Capacitor Device for Air Bubbles Monitoring |
| title_short | Capacitor Device for Air Bubbles Monitoring |
| title_sort | capacitor device for air bubbles monitoring |
| topic | TK Electrical engineering. Electronics Nuclear engineering |
| url | http://scholars.utp.edu.my/id/eprint/1110/ http://scholars.utp.edu.my/id/eprint/1110/ http://scholars.utp.edu.my/id/eprint/1110/1/IJECS.pdf |