Syringe with ultrasound emitting transducer for flow-directed cannulation of arteries and veins

作者: Paul G. Yock

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摘要: A needle and syringe assembly including a transducer for directing ultrasonic waves through the receiving reflected as is inserted into tissue. The has surface area which substantially equals of plunger head within body to permit delivery more power thereby increase depth penetration transmitted waves. lens may be associated with focusing from needle. Further, include plurality sections or portions in planar arrangement either continuous wave pulsed transmission reception energy passing plunger, transducer, detachable whereby can reusable employed conventional syringes needles when only guidance required. In another embodiment, pod assembly, houses lens, detachably connected between cylinder. permits cleansing sterilization reuse disposable syringes.

参考文章(4)
Ronald Marks, Christopher Edwards, Proximity detector with a medical instrument ,(1987)
Mehrdad Nikoonahad, Ultrasound flow measurement apparatus Journal of the Acoustical Society of America. ,vol. 87, pp. 2805- 2806 ,(1988) , 10.1121/1.398976
Paul G Yock, Alan Selfridge, Apparatus for use in cannulation of blood vessels Transfusion Science. ,vol. 11, ,(1989) , 10.1016/0955-3886(90)90104-Q