Interrogation device and method

Details Interrogation device and method Interrogation device and method

1997-10-21

1999-03-23

Jaworski, Francis J.

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

600554, A61B 812

Patent

active

058852190

ABSTRACT:
An interrogation device is used to locate a nerve within the body. The device uses a piezoelectric crystal to locate a pulsing vessel proximate with the nerve. As the device is guided toward the nerve, it can emit an electric signal to stimulate the nerve. The operator can then watch for any physical reaction from the patient in response to nerve stimulation. As the device closes upon the nerve, pressure is applied with the needle to the vessel, thus compressing the vessel, diminishing the doppler response. Once the surface of the nerve is located, it can be accurately anesthetized.

REFERENCES:
patent: 4549556 (1985-10-01), Tajan et al.
patent: 4887606 (1989-12-01), Yock et al.
patent: 5397344 (1995-03-01), Garfield et al.
patent: 5679649 (1997-10-01), Fukunaga

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