Sensor for intrauterine use

Details Sensor for intrauterine use Sensor for intrauterine use

1991-10-11

1993-09-28

Cohen, Lee S.

Surgery

Truss

Pad

128642, A61B 500

Patent

active

052479323

ABSTRACT:
A sensor placement and retention mechanism for use with fetal sensor sites beyond the user's reach are disclosed. The preferred embodiment of this invention is a fetal pulse oximetry sensor having an active face through which a light source and a light detector operate. The sensor includes a handle that facilitates placement of the active face at a sensor site in a preferred region beyond the transcervical region and beyond the reach of the user. A pair of electrodes--one disposed against the fetus' skin and one exposed to the amniotic fluid--are used to confirm that the sensor is firmly in place on the fetus. In an optional sensor retention feature, a self-inflating bladder presses the active face of the sensor against the fetus' skin to optically couple the sensor with the tissue at the sensor site.

REFERENCES:
patent: 3326207 (1967-06-01), Egan
patent: 3772593 (1973-11-01), Sidhu
patent: 3851641 (1974-12-01), Toole et al.
patent: 4649924 (1987-03-01), Taccardi
patent: 4706688 (1987-11-01), Don Michael et al.
patent: 4808931 (1989-02-01), Ling
patent: 4873986 (1989-10-01), Wallace
patent: 5109849 (1992-05-01), Goodman et al.

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