BODY-WORN SYSTEM FOR MEASURING BLOOD PRESSURE
First Claim
1. A system for measuring a blood pressure value from a patient, said system comprising:
- a sensor configured to be worn on the patient'"'"'s thumb comprising a light source that emits optical radiation, and a photodetector that detects the optical radiation after passing through a portion of a vessel in the patient'"'"'s thumb to generate a first time-dependent signal;
at least two electrodes configured to be worn on the patient'"'"'s body and detect electrical signals, each electrode connected to an electrical circuit configured to generate a second time-dependent signal; and
a processing system configured to be worn on a portion of the patient'"'"'s arm and collectively process both the first and second time-dependent signals to determine the blood pressure value, the processing system attached to a housing comprising a first input port that receives the first time-dependent signal, or a signal used to generate the first time-dependent signal, and a second input port that receives the second time-dependent signal, or a signal used to generate the second time-dependent signal, the housing comprising the first input port on one side portion and the second input port on a second side portion opposite to the first side portion.
2 Assignments
0 Petitions
Accused Products
Abstract
A system for measuring a blood pressure value from a patient features a sensor configured to be worn on the patient'"'"'s thumb. The sensor includes one or two light sources that emit optical radiation, and a photodetector that detects the optical radiation after it passes through a portion of a vessel (e.g. an artery or capillary) in the patient'"'"'s thumb to generate a first time-dependent signal (e.g. a PPG waveform). In embodiments the sensor is made from a flexible material that wraps around a portion of the patient'"'"'s thumb (e.g. the base) while leaving the thumb'"'"'s tip uncovered. This configuration is less awkward than most finger-worn sensors, and allows the patient to comfortably go about their day-to-day activities (e.g. reading, eating) with little obstruction. The system also includes at least two electrodes that are configured to be worn on the patient'"'"'s body and detect electrical signals that are processed by an electrical circuit to generate a second time-dependent signal (e.g. an ECG waveform).
153 Citations
23 Claims
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1. A system for measuring a blood pressure value from a patient, said system comprising:
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a sensor configured to be worn on the patient'"'"'s thumb comprising a light source that emits optical radiation, and a photodetector that detects the optical radiation after passing through a portion of a vessel in the patient'"'"'s thumb to generate a first time-dependent signal; at least two electrodes configured to be worn on the patient'"'"'s body and detect electrical signals, each electrode connected to an electrical circuit configured to generate a second time-dependent signal; and a processing system configured to be worn on a portion of the patient'"'"'s arm and collectively process both the first and second time-dependent signals to determine the blood pressure value, the processing system attached to a housing comprising a first input port that receives the first time-dependent signal, or a signal used to generate the first time-dependent signal, and a second input port that receives the second time-dependent signal, or a signal used to generate the second time-dependent signal, the housing comprising the first input port on one side portion and the second input port on a second side portion opposite to the first side portion. - 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 system for measuring a blood pressure value from a patient, comprising:
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a sensor configured to be worn on the patient'"'"'s thumb comprising a light source that emits optical radiation, and a photodetector that detects the optical radiation after passing through a portion of a vessel in the patient'"'"'s thumb to generate a first time-dependent signal; at least two electrodes configured to be worn on the patient'"'"'s body and detect electrical signals, each electrode connected to an electrical circuit configured to generate a second time-dependent signal; a pneumatic system comprising a pump, a valve, and a manifold, the pneumatic system configured to supply a pressure to the patient'"'"'s arm; and a processing system configured to be worn on a portion of the patient'"'"'s arm and collectively process both the first and second time-dependent signals in the presence of pressure supplied by the pneumatic system to determine the blood pressure value, the processing system comprising a housing comprising a first input port that receives the first time-dependent signal, or a signal used to generate the first time-dependent signal, and a second input port that receives the second time-dependent signal, or a signal used to generate the second time-dependent signal, the housing comprising the first input port on one side portion and the second input port on a second side portion opposite to the first side portion.
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23. A system for measuring a blood pressure value from a patient, comprising:
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a sensor configured to be worn on the patient'"'"'s thumb comprising a light source that emits optical radiation, and a photodetector that detects the optical radiation after passing through a portion of a vessel in the patient'"'"'s thumb to generate a first time-dependent signal; at least two electrodes configured to be worn on the patient'"'"'s body and detect electrical signals, each electrode connected to an electrical circuit configured to generate a second time-dependent signal; a pneumatic system comprising a pump, a valve, and a manifold, the pneumatic system configured to supply a pressure to the patient'"'"'s arm and generate a third time-dependent signal representing the pressure; and a processing system configured to be worn on the patient'"'"'s arm and comprising;
i) a first compartment comprising the pneumatic system configured to be worn on a first portion of the patient'"'"'s arm; and
ii) a second compartment, connected to the first compartment through a flexible cable, and configured to be worn on a second portion of the patient'"'"'s arm, the second compartment comprising a processor that receives the first time-dependent signal, or a signal used to generate the first time-dependent signal, the second time-dependent signal, or a signal used to generate the second time-dependent signal, and the third time-dependent signal, or a signal used to generate the third time-dependent signal, the processor configured to determine a blood pressure value from the first, second, and third time-dependent signals.
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Specification