Body-worn vital sign monitor
First Claim
1. A system for measuring vital sign information from a patient, comprising:
- (a) a first sensor configured to be worn on the chest of the patient and to generate a first time-dependent waveform indicative of one or more contractile properties of the patient'"'"'s heart, the first sensor comprising a first controller area network (CAN) transceiver configured to transmit the first time-dependent waveform using a CAN protocol, wherein the first sensor is an electrocardiogram sensor;
(b) a second sensor configured to be worn on the hand of the patient and to generate a second time-dependent waveform indicative of one or more contractile properties of the patient'"'"'s heart, the second sensor comprising a second CAN transceiver configured to transmit the second time-dependent waveform using a CAN protocol wherein the second sensor is a plethysmogram sensor; and
(c) a processing component configured to be worn on the patient'"'"'s body and comprising a microprocessor, a display configured to render a first graphical user interface upon receipt of an identifying code from a medical professional, a system for detecting the identifying code from a medical professional, and a third CAN transceiver the processing component configured to;
(i) receive via the third CAN transceiver the first time-dependent waveform transmitted by the first CAN transceiver;
(ii) receive via the third CAN transceiver the second time-dependent waveform transmitted by the second CAN transceiver;
(iii) communicate with the first sensor and the second sensor to transmit a timing synchronizing packet that is received and used by the first sensor and the second sensor to time-synchronize the first time-dependent waveform and the second time-dependent waveform such that there is a maximum 40-microsecond timing error in the synchrony between the first and second time-dependent waveforms;
(iv) calculate a continuous noninvasive blood pressure value from the first and second time-dependent waveforms; and
(v) display the continuous noninvasive blood pressure value on the first graphical user interface rendered in response to detecting the identifying code.
2 Assignments
0 Petitions
Accused Products
Abstract
The invention provides a body-worn monitor featuring a processing system that receives a digital data stream from an ECG system. A cable houses the ECG system at one terminal end, and plugs into the processing system, which is worn on the patient'"'"'s wrist like a conventional wristwatch. The ECG system features: i) a connecting portion connected to multiple electrodes worn by the patient; ii) a differential amplifier that receives electrical signals from each electrode and process them to generate an analog ECG waveform; iii) an analog-to-digital converter that converts the analog ECG waveform into a digital ECG waveform; and iv) a transceiver that transmits a digital data stream representing the digital ECG waveform (or information calculated from the waveform) through the cable and to the processing system. Different ECG systems, typically featuring three, five, or twelve electrodes, can be interchanged with one another.
476 Citations
18 Claims
-
1. A system for measuring vital sign information from a patient, comprising:
-
(a) a first sensor configured to be worn on the chest of the patient and to generate a first time-dependent waveform indicative of one or more contractile properties of the patient'"'"'s heart, the first sensor comprising a first controller area network (CAN) transceiver configured to transmit the first time-dependent waveform using a CAN protocol, wherein the first sensor is an electrocardiogram sensor; (b) a second sensor configured to be worn on the hand of the patient and to generate a second time-dependent waveform indicative of one or more contractile properties of the patient'"'"'s heart, the second sensor comprising a second CAN transceiver configured to transmit the second time-dependent waveform using a CAN protocol wherein the second sensor is a plethysmogram sensor; and (c) a processing component configured to be worn on the patient'"'"'s body and comprising a microprocessor, a display configured to render a first graphical user interface upon receipt of an identifying code from a medical professional, a system for detecting the identifying code from a medical professional, and a third CAN transceiver the processing component configured to;
(i) receive via the third CAN transceiver the first time-dependent waveform transmitted by the first CAN transceiver;
(ii) receive via the third CAN transceiver the second time-dependent waveform transmitted by the second CAN transceiver;
(iii) communicate with the first sensor and the second sensor to transmit a timing synchronizing packet that is received and used by the first sensor and the second sensor to time-synchronize the first time-dependent waveform and the second time-dependent waveform such that there is a maximum 40-microsecond timing error in the synchrony between the first and second time-dependent waveforms;
(iv) calculate a continuous noninvasive blood pressure value from the first and second time-dependent waveforms; and
(v) display the continuous noninvasive blood pressure value on the first graphical user interface rendered in response to detecting the identifying code. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
Specification