Sensor device for measuring vital parameters of a fetus during labor and delivery
First Claim
1. A sensor for measuring during labor and delivery the vital parameters of a fetus having a presenting part without impairing the arterial blood flow in the fetus at the point of measurement, said sensor comprising:
- a carrier defining a curved cup and having;
(a) an approximately round cross section with a center,(b) a concave surface adapted to face the presenting part of the fetus and forming a concavity,(c) an attachment zone at said center of said carrier, and(d) an elastic peripheral zone surrounding said attachment zone and in flexible, spring-loaded contact with fetal tissue when said carrier is attached to the presenting part of the fetus;
at least one light emitter arranged in said elastic peripheral zone;
at least one light receiver arranged in said elastic peripheral zone; and
means for attaching said carrier to the presenting part of the fetus so as to permit the flexible, spring-loaded contact of the peripheral zone, said attaching means located at said center of said carrier.
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Accused Products
Abstract
A sensor device used as part of a measurement device with a measurement unit for measuring vital parameters of a fetus during labor and delivery. The sensor is attached to the presenting part of the fetus for the duration of labor and delivery. In order to prevent the arterial blood flow in the fetal tissue at the measurement point from being impaired by attachment of the sensor to the fetal tissue, the sensor has an approximately round, curved cup which forms a concavity on its concave side and is subdivided into an attachment zone at the center and an elastic peripheral zone surrounding it where the light emitter and receiver are arranged, whereby the peripheral zone of the cup attached to the fetal tissue rests in a flexible, spring-loaded manner on the fetal tissue.
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Citations
26 Claims
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1. A sensor for measuring during labor and delivery the vital parameters of a fetus having a presenting part without impairing the arterial blood flow in the fetus at the point of measurement, said sensor comprising:
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a carrier defining a curved cup and having; (a) an approximately round cross section with a center, (b) a concave surface adapted to face the presenting part of the fetus and forming a concavity, (c) an attachment zone at said center of said carrier, and (d) an elastic peripheral zone surrounding said attachment zone and in flexible, spring-loaded contact with fetal tissue when said carrier is attached to the presenting part of the fetus; at least one light emitter arranged in said elastic peripheral zone; at least one light receiver arranged in said elastic peripheral zone; and means for attaching said carrier to the presenting part of the fetus so as to permit the flexible, spring-loaded contact of the peripheral zone, said attaching means located at said center of said carrier. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A sensor for measuring during labor and delivery the vital parameters of a fetus having a presenting part without impairing the arterial blood flow in the fetus at the point of measurement, said sensor comprising:
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a carrier defining a curved cup and having; (a) an approximately round cross section with a center, (b) a concave surface adapted to face the presenting part of the fetus and forming a concavity, (c) a convex surface opposite said concave surface, (d) an attachment zone at said center of said carrier, and (e) an elastic peripheral zone surrounding said attachment zone and in flexible, spring-loaded contact with fetal tissue when said carrier is attached to the presenting part of the fetus; at least one light emitter arranged in said elastic peripheral zone; at least one light receiver arranged in said elastic peripheral zone; a spiral wire having a first end embedded in said carrier at said center of said carrier and a second end formed as a spiral projecting about one turn out of said concave surface of said carrier for attaching said carrier to the presenting part of the fetus; and a structural metal plate partially embedded in said carrier and permanently connected to said spiral wire, located in the center of said convex surface of said carrier, for coupling said carrier to a rotating handle. - View Dependent Claims (23)
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24. A sensor for measuring during labor and delivery the vital parameters of a fetus having a presenting part without impairing the arterial blood flow in the fetus at the point of measurement, said sensor comprising:
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a carrier defining a curved cup and having; (a) an approximately round cross section with a center, (b) a concave surface adapted to face the presenting part of the fetus and forming a concavity, (c) an attachment zone at said center of said carrier, and (d) an elastic peripheral zone surrounding said attachment zone and in flexible, spring-loaded contact with fetal tissue when said carrier is attached to the presenting part of the fetus; at least one light emitter arranged in said elastic peripheral zone; at least one light receiver arranged in said elastic peripheral zone; and means for attaching said attachment zone of said carrier to the presenting part of the fetus so as to permit the flexible, spring loaded contact of the peripheral zone, said attaching means located at said attachment zone at said center of said carrier. - View Dependent Claims (25, 26)
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Specification