Foot pulse oximeter for screening congenital heart disease before newborn discharge
First Claim
1. A method for screening for congenital heart disease in newborns, the method comprising:
- using a device to screen a newborn for congenital heart disease by placing a portion of a foot of a human newborn toes first in a body with a chamber of the device that accommodates the portion of the newborn'"'"'s foot, the portion of the newborn'"'"'s foot including all five toes and a portion of the forefoot;
detecting, by a plurality of receivers, light from corresponding light emitters that passes through the newborn'"'"'s foot when the portion of the newborn'"'"'s foot is inside the chamber;
receiving, via a signal processor, signals conveying information associated with the light detected by the plurality of receivers;
determining, via the signal processor, a best quality signal based on one or both of a quality or strength of the received signals, whether the best quality signal breached a threshold for a given period of time, and an arterial oxygen saturation of hemoglobin (SpO2) based on the received signals;
wherein the device comprises;
a case formed at least in part by plastic and shaped as a concave tubular body with an open front end and a curved closed second end, wherein the chamber is formed in the case;
a cover disposed within an interior of the body to form a double-layer structure, the cover being shaped to fit within the interior of the body;
a power button disposed on a first portion of the case;
a display disposed on a second portion of the case, wherein the display presents information related to one or more of SpO2, heart rate , or arterial pulse;
three or more light emitter/receiver pairs, each light emitter/receiver pair including a light emitter and a corresponding receiver disposed on opposite sides of the body such that, when the portion of the newborn'"'"'s foot is inside the chamber, light from the light emitter that passes through the newborn'"'"'s foot is detected by the receiver, the receiver is configured to provide a signal conveying information associated with the detected light;
a first indicator configured to convey one or both of a quality or strength of one or more signals provided by the receivers of the three or more light emitter/receiver pairs; and
a second indicator configured to provide a pass/fail indication for congenital heart disease responsive to (1) the foot being placed in the device and (2) whether the determined best quality signal breached the threshold for the given period of time.
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Accused Products
Abstract
A method including placing a portion of a foot of a newborn in a device, the device including a light emitter and a corresponding receiver coupled on opposite sides of the device, the device further including a processor for processing data from the light emitter and receiver; and determining a presence of congenital heart disease. An apparatus including a body including a chamber of a size to accommodate a portion of a newborn'"'"'s foot; at least one light emitter and a corresponding detector coupled on opposite sides of the body, the emitter configured to emit light of a prescribed wavelength into the chamber; and a processor coupled to the body and configured to receive a signal from the at least one detector.
22 Citations
17 Claims
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1. A method for screening for congenital heart disease in newborns, the method comprising:
using a device to screen a newborn for congenital heart disease by placing a portion of a foot of a human newborn toes first in a body with a chamber of the device that accommodates the portion of the newborn'"'"'s foot, the portion of the newborn'"'"'s foot including all five toes and a portion of the forefoot; detecting, by a plurality of receivers, light from corresponding light emitters that passes through the newborn'"'"'s foot when the portion of the newborn'"'"'s foot is inside the chamber; receiving, via a signal processor, signals conveying information associated with the light detected by the plurality of receivers; determining, via the signal processor, a best quality signal based on one or both of a quality or strength of the received signals, whether the best quality signal breached a threshold for a given period of time, and an arterial oxygen saturation of hemoglobin (SpO2) based on the received signals; wherein the device comprises; a case formed at least in part by plastic and shaped as a concave tubular body with an open front end and a curved closed second end, wherein the chamber is formed in the case; a cover disposed within an interior of the body to form a double-layer structure, the cover being shaped to fit within the interior of the body; a power button disposed on a first portion of the case; a display disposed on a second portion of the case, wherein the display presents information related to one or more of SpO2, heart rate , or arterial pulse; three or more light emitter/receiver pairs, each light emitter/receiver pair including a light emitter and a corresponding receiver disposed on opposite sides of the body such that, when the portion of the newborn'"'"'s foot is inside the chamber, light from the light emitter that passes through the newborn'"'"'s foot is detected by the receiver, the receiver is configured to provide a signal conveying information associated with the detected light; a first indicator configured to convey one or both of a quality or strength of one or more signals provided by the receivers of the three or more light emitter/receiver pairs; and a second indicator configured to provide a pass/fail indication for congenital heart disease responsive to (1) the foot being placed in the device and (2) whether the determined best quality signal breached the threshold for the given period of time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An apparatus configured to screen for congenital heart disease in newborns, the apparatus comprising:
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a body comprising a chamber that accommodates a portion of a human newborn'"'"'s foot, the portion of the newborn'"'"'s foot including all five toes and a portion of the forefoot, wherein the body includes a case formed at least in part by plastic and shaped as a concave tubular body with an open front end and a curved closed second end, wherein the chamber is formed in the case; a cover disposed within an interior of the body to form a double-layer structure, the cover being shaped to fit within the interior of the body; a power button disposed on a first portion of the case; a display disposed on a second portion of the case, wherein the display presents information related to one or more of SpO2, heart rate, or arterial pulse; three or more light emitter/receiver pairs, each light emitter/receiver pair including a light emitter and a corresponding receiver disposed on opposite sides of the body such that, when the portion of the newborn'"'"'s foot is inside the chamber, light from the light emitter that passes through the newborn'"'"'s foot is detected by the receiver, the receiver is configured to provide a signal conveying information associated with the detected light; a signal processor configured to receive signals conveying information associated with the detected light, and is configured to determine a best quality signal based on one or both of a quality or strength of the received signals, whether the best quality signal breached a threshold for a given period of time, and an arterial oxygen saturation of hemoglobin (SpO2) based on the received signals; a first indicator configured to convey one or both of a quality or strength of one or more signals provided by the receivers of the three or more light emitter/receiver pairs; and a second indicator configured to provide a pass/fail indication for congenital heart disease responsive to (1) the foot being placed in the device and (2) whether the determined best quality signal breached the threshold for the given period of time. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification