MRI compatible pulse oximetry system

Details MRI compatible pulse oximetry system MRI compatible pulse oximetry system

1992-10-15

1994-06-28

Smith, Ruth S.

Surgery

Truss

Pad

1286532, 1286535, 128666, 128687, 128901, A61B 50245, A61B 5055

Patent

active

053237765

ABSTRACT:
Magnetic resonance imaging hardware (A) defines a patient receiving region (20) that is surrounded by a bore liner (22). A socket (50) is mounted in the bore liner with an appropriate receptacle for receiving a standard plug (52) of a conventional pulse oximetry system. Conventional pulse oximetry systems include a sensor unit (54) connected with a cable (56) having the plug (52) at one end thereof. A notch filter (62) attenuates currents near the resonance frequency of the imager. A preamplifier (60) amplifies signals from the sensor unit. Within the shielding (66) of the preamplifier, a low pass filter (68) is provided to remove induced radio frequency components from the preamplified sensor unit signal. A radio frequency filter (70) mounted at the shield of the shielded room (B) prevents radio frequency signals from reaching an exterior processing and display unit (E) and prevents radio frequency signals from a clock (72) of the processing and display unit from being conveyed into the shielded room (B). The processing and display unit processes the signal received from the preamplifier to generate a pulse rate display (78) and a blood oxygen concentration display (80).

REFERENCES:
patent: 4545384 (1985-10-01), Kawachi
patent: 4763075 (1988-01-01), Weigert
patent: 4991580 (1991-02-01), Moore
patent: 4991587 (1991-02-01), Blakeley et al.
patent: 5159929 (1992-11-01), Morris et al.
"Monitoring of Acutely Ill Patients During Nuclear Magnetic Resonance Imaging: Use of a Time-Varying Filter Electrocardiographic Gating Device to Reduce Gradient Artifacts", Rokey, et al. Magnetic Resonance in Medicine 6, 240-245 (1989) pp. 240-245.

Affiliated with

Also associated with

Rating

MRI compatible pulse oximetry system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with MRI compatible pulse oximetry system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and MRI compatible pulse oximetry system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2371203