WIRELESS MEDICAL MONITORING SYSTEM
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Accused Products
Abstract
A blood oxygen saturation level (SpO2) measurement subunit employed in a wireless transceiver unit connected to a medical monitor unit. An illumination emulator is used for emulating the characteristics of an illumination source of a pulse oximeter. The emulator utilities at least part of the energy coming from the SpO2 socket of the medical monitor. Energy originally intended to energize one illumination source of the pulse oximeter, energizes the power supply circuitry. A processor is employed for processing information about pulsing arterial blood of a patient received from a patient companion assembly (PCA). A digital to analogue converter is used for converting the PCA, to analogue signal. A low pass filter (LPF), filtering the signal to form a pulsative voltage signal represents the pulsing arterial blood of the patient, and is sent to the SpO2 socket of the medical monitor for displaying and further processing.
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Citations
55 Claims
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1-24. -24. (canceled)
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25. A blood oxygen saturation level (SpO2) measurement subunit employed in a wireless transceiver unit connected to at least one medical monitor unit, said at least one medical monitor unit having at least one SpO2 socket, said SpO2 measurement subunit comprising:
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an illumination emulator, emulating the characteristics of at least one illumination source of a pulse oximeter; a processor, employed in said wireless transceiver unit or said SpO2 measurement subunit, processing information about pulsing arterial blood of a patient received from a patient companion assembly (PCA).
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26. A blood oxygen saturation level (SpO2) measurement subunit employed in a wireless transceiver unit connected to at least one medical monitor unit, said at least one medical monitor unit having at least one SpO2 socket, said SpO2 measurement subunit comprising:
at least one power supply circuit supplying energy to electrical components of said SpO2 measurement subunit. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. An electrocardiogram (ECG) monitor subunit employed in association with a patient companion assembly (PCA) in wireless communication with at least one medical monitor unit, said ECG monitor subunit comprising a processor processing ECG data received from the PCA,
said ECG data including one or more measurements for each ECG lead, said ECG monitor subunit being operative: -
to provide said ECG data to a digital to analogue (D/A) converter, said D/A converter providing an analog date output, to filter the analog data output using a low pass filter, said low pass filter providing a low pass filter output signal, and to attenuate said low pass filter output signal thereby adapting said low pass filter output signal to a desired intensity level acceptable for input to the at least one medical monitor unit.
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39. An electrocardiogram (ECG) subunit employed in a patient companion assembly (PCA) for wireless communication with at least one medical monitor unit, said ECG subunit including a digital wireless communications subsystem, said ECG subunit including a self test generator injecting pulses to test an entire path of ECG data.
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40. An electrocardiogram (ECG) subunit employed in a patient companion assembly (PCA) for wireless communication with at least one medical monitor unit, said ECG subunit including a digital wireless communications subsystem providing, to said at least one medical monitor unit, data about one or more disconnected ECG leads.
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41. An electrocardiogram (ECG) subunit employed in a patient companion assembly (PCA) wirelessly communicating with at least one medical monitor unit, said ECG subunit processing input arriving from at least two ECG leads, said ECG subunit comprising:
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a medical sensor interface subunit having at least two ECG channel routes, each of said at least two ECG channel routes incorporating an ECG channel interface; an analogue to digital converter; a multiplexer for multiplexing output signals from said at least two ECG channel routes to said analogue to digital converter; a digital wireless communications subsystem (WSS) wirelessly communicating with a monitor wireless transceiver unit (MWT); and a processor for adapting a digital output from said analogue to digital converter to digital wireless communications for supplying to said digital wireless communications subsystem, said multiplexer multiplexing said output signals in at least two different sequences to compensate for a phase shift between said at least two ECG channel routes. - View Dependent Claims (42, 43, 44, 45, 46, 47)
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48. A system for powering a wireless transceiver module connected to a medical monitor having at least one pressure sensor socket, said system powering said wireless transceiver module by an electrical power partially obtained from pressure sensor sockets of a medical monitor, said system comprising:
a pressure sensor load emulator circuit emulating an electrical resistance of a pressure sensor connected to a pressure socket of said medical monitor. - View Dependent Claims (49, 50, 51, 52, 53)
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54. An emulator of a medical thermistor for use in a wireless transceiver unit connected to at least one medical monitor unit, said at least one medical monitor unit having at least one temperature socket, said emulator being a programmable device having a digital potentiometer working as a ratiometric divider, said emulator determining a function between entrance voltage and entrance current according to a resistance ratio between R3 and R2 as given by the equation:
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Vin=Iin(R1(R3/R2))where Vin is a voltage across an input of said emulator of a medical thermistor, R1 is a precision resistor determining thermistor emulation accuracy, and R3/R2 is a digital potentiometer ratio used in a divider mode defining a multiplication coefficient (R3/R2) and thereby determining a variable thermistor resistance value.
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55. A wireless medical monitor comprising:
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a wireless monitor transceiver unit; and a medical monitor unit, said wireless monitor transceiver unit including a plurality of subunits selected from an ECG subunit, a SpO2 subunit, a temperature subunit, a pressure subunit, a respiratory subunit and a blood chemistry sub unit, each said plurality of subunits sharing, with at least one other of said plurality of subunits, at least one of a wireless communication subsystem, a processor, a digital to analogue (D/A) converter, an analogue to digital (A/D) converter, an opto-coupler, a power supply and a multiplexer.
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Specification