Probe and system for detecting probe dislodgement

Details Probe and system for detecting probe dislodgement Probe and system for detecting probe dislodgement

1979-10-26

1981-10-20

Cohen, Lee S.

Surgery

Truss

Pad

73343R, 200 6102, 200DIG36, 340600, A61B 500

Patent

active

042954754

ABSTRACT:
A contact probe arranged to detect dislodgement of the probe from a body to which it has been attached. Probe dislodgement is detected by sensing an increased radiation level falling on a main sensor (14) located in the contact surface (10a) of the probe. The main sensor cooperates with a reference sensor (16) located in another surface (10b) of the probe which receives radiation reflected from the skin of the body to which the probe is attached. The reference sensor (16) provides a floating reference for the main sensor (14). In addition to providing an indication of probe dislodgement, the two sensors cooperate to develop an indication when they are shielded from the radiation source, thereby rendering the probe inoperative to sense probe dislodgement.

REFERENCES:
patent: 2737644 (1956-03-01), Krieger
patent: 2976419 (1961-03-01), Menke et al.
patent: 3300770 (1967-01-01), Broussea et al.
patent: 3329946 (1967-07-01), Robbins
patent: 3569710 (1971-03-01), Jalink
patent: 3930249 (1975-12-01), Steck et al.
patent: 4164937 (1979-08-01), Spencer

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