Side-Scan Technology Used in High-Frequency Ultrasound Needle Transducer
碩士 === 國立陽明大學 === 生物醫學工程學系 === 103 === Epidural Anesthesia (EA) is one of the most common anesthesia methods. The anesthesiologist will insert the epidural needle, place catheter and inject anesthetic into the narrow epidural space. Too deep needle insertion would cause Dural Puncture which result i...
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| Format: | Others |
| Language: | zh-TW |
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2015
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| Online Access: | http://ndltd.ncl.edu.tw/handle/r6t2rt |
| Summary: | 碩士 === 國立陽明大學 === 生物醫學工程學系 === 103 === Epidural Anesthesia (EA) is one of the most common anesthesia methods. The anesthesiologist will insert the epidural needle, place catheter and inject anesthetic into the narrow epidural space. Too deep needle insertion would cause Dural Puncture which result in Cerebral Spinal Fluid (CSF) leakage with headache and vomit complications etc.
We develop a 30 MHz high-frequency ultrasound needle transducer technology, place the needle transducer into the epidural needle and is able to provide guiding and locating in EA insertion.
In this research, the 40% increase of transducer active area improves the sensitivity of ultrasound needle. We design a new and efficient process. And the time of needle fabrication is shortened from original 7 days to 3 days. The change from front sight to side scanning extends more range of vision. With real-time B-mode showing the brightness of different part of tissue in insertion path way, anesthetists can distinguish the location of the needle tip and prevent Dural Punctured.
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