Impedance spectroscopy system and catheter for ischemic...

Surgery – Diagnostic testing – Measuring electrical impedance or conductance of body portion

Reexamination Certificate

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C604S508000

Reexamination Certificate

active

06882879

ABSTRACT:
An impedance spectroscopy system for monitoring ischemic mucosal damage in hollow viscous organs comprises a sensor catheter and an impedance spectrometer for electrically driving the catheter to obtain a complex tissue impedance spectrum. Once the catheter is in place in one of a patient's hollow viscous organs, the impedance spectrometer obtains the complex impedance spectrum by causing two electrodes in the tip of the catheter to inject a current into the mucosal tissue at different frequencies, while two other electrodes measure the resulting voltages. A pattern recognition system is then used to analyze the complex impedance spectrum and to quantify the severity of the mucosal injury. Alternatively, the complex impedance spectrum can be appropriately plotted against the spectrum of normal tissue, allowing for a visual comparison by trained personnel.

REFERENCES:
patent: 2018080 (1935-05-01), Martienssen
patent: 2008295 (1935-07-01), Smith
patent: 2184511 (1939-12-01), Bagno et al.
patent: 2729211 (1956-01-01), Peter
patent: 3340867 (1967-09-01), Kubicek et al.
patent: 3480003 (1969-11-01), Crites
patent: 4146254 (1979-03-01), Turner et al.
patent: RE30101 (1979-09-01), Kubicek et al.
patent: 4224949 (1980-09-01), Scott et al.
patent: 4476872 (1984-10-01), Perlin
patent: 4498481 (1985-02-01), Lemke
patent: 4602809 (1986-07-01), Ross et al.
patent: 4690152 (1987-09-01), Juncosa
patent: 4729385 (1988-03-01), Juncosa et al.
patent: 4836214 (1989-06-01), Sramek
patent: 4852580 (1989-08-01), Wood
patent: 4960133 (1990-10-01), Hewson
patent: 5069223 (1991-12-01), McRae
patent: 5074827 (1991-12-01), Bandy, Jr.
patent: 5109851 (1992-05-01), Jadvar et al.
patent: 5280429 (1994-01-01), Withers
patent: 5282840 (1994-02-01), Hudrlik
patent: 5306052 (1994-04-01), MeGushion
patent: 5335668 (1994-08-01), Nardella
patent: 5381790 (1995-01-01), Kanesaka
patent: 5454377 (1995-10-01), Dzwonczyk et al.
patent: 5456254 (1995-10-01), Pietroski et al.
patent: 5479935 (1996-01-01), Essen-Moller
patent: 5807272 (1998-09-01), Kun et al.
patent: 5991650 (1999-11-01), Swanson et al.
patent: 6032061 (2000-02-01), Koblish
patent: WO 8200581 (1982-04-01), None
patent: WO 8204182 (1982-12-01), None
patent: WO 9848692 (1998-11-01), None
Rigaud B et al., “Bioelectrical Impedance Techniques in Medicine”, Critical Reviews in Biomedial Engineering, CRC Press, Boca Raton, FL, US, vol. 24, No. 4-6, 1996, pp. 257-336.

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