VITAL SIGN-MONITORING SYSTEM WITH MULTIPLE OPTICAL MODULES
First Claim
1. A medical device for measuring vital signs from a patient, comprising:
- a first optical module comprising a first light source and a first photodetector, the first light source and first photodetector oriented to optically measure blood flowing in an underlying artery;
a second optical module comprising a second light source and a second photodetector, the second light source and second photodetector oriented to optically measure blood flowing in an underlying artery; and
a processor, in electrical communication with the first and second photodetector, configured to run a firmware algorithm that processes signals from the first and second photodetectors to determine at least one vital sign from the patient.
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Abstract
The invention features a medical device that measures vital signs (e.g., blood pressure, pulse oximetry, and heart rate) from a patient using at least two optical modules. Each optical module typically features two light sources (red, infrared) and a photodetector. Both optical modules are configured to measure time-dependent signals describing the patient'"'"'s flowing blood. A processor analyzes the time-dependent signals to determine the patient'"'"'s vital signs. Once the vital signs are measured, a wireless transmitter in the body-worn device transmits them to an external device. Processing signals from least two optical modules compensates for motion-related artifacts and noise normally present in signals used to determine vital signs from a device featuring just a single optical module.
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Citations
17 Claims
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1. A medical device for measuring vital signs from a patient, comprising:
- a first optical module comprising a first light source and a first photodetector, the first light source and first photodetector oriented to optically measure blood flowing in an underlying artery;
a second optical module comprising a second light source and a second photodetector, the second light source and second photodetector oriented to optically measure blood flowing in an underlying artery; and
a processor, in electrical communication with the first and second photodetector, configured to run a firmware algorithm that processes signals from the first and second photodetectors to determine at least one vital sign from the patient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- a first optical module comprising a first light source and a first photodetector, the first light source and first photodetector oriented to optically measure blood flowing in an underlying artery;
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14. A medical device for measuring blood pressure from a patient, comprising:
- a first optical module comprising a first light source and a first photodetector, the first light source and first photodetector oriented to optically measure blood flowing in an underlying artery;
a second optical module comprising a second light source and a second photodetector, the second light source and second photodetector oriented to optically measure blood flowing in an underlying artery; and
a processor, in electrical communication with the first and second photodetector, configured to run a firmware algorithm that processes signals from the first and second photodetectors to determine a blood pressure value from the patient.
- a first optical module comprising a first light source and a first photodetector, the first light source and first photodetector oriented to optically measure blood flowing in an underlying artery;
- 15. The medical device of claim 15, wherein the first and second optical modules are comprised by a finger-worn component.
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17. A medical device for measuring vital signs from a patient, comprising:
- a first optical module comprising a first light source and a first photodetector, the first light source and first photodetector oriented to optically measure blood flowing in an underlying artery;
a second optical module comprising a second light source and a second photodetector, the second light source and second photodetector oriented to optically measure blood flowing in an underlying artery;
a processor, in electrical communication with the first and second photodetector, configured to run a firmware algorithm that processes signals from the first and second photodetectors to determine at least one vital sign from the patient; and
a short-range wireless component, in electrical communication with the processor, configured to send vital sign information to an external device.
- a first optical module comprising a first light source and a first photodetector, the first light source and first photodetector oriented to optically measure blood flowing in an underlying artery;
Specification