Parameter upgrade system
A physiological monitor has a sensor port configured to attach and communicate with a sensor. A processor board is in communications with the sensor port and has a board digital signal processor (DSP). Firmware residing on the processor board is executable by the board DSP so as to calculate physiological parameters in response to a sensor signal received from the sensor. Upgrade tools are individually attachable to the sensor port in lieu of the sensor so as to designate to the processor board which of the physiological parameters, if any, to calculate when the sensor is attached to the sensor port.
1. A parameter upgrade system comprising:
a handheld upgrade tool; and
a physiological monitor comprising:
a first sensor port configured to attach and communicate with a sensor; and
a processor board in communication with the first sensor port, the processor board comprising:
a monitor digital signal processor (DSP) configured to:
determine that the handheld upgrade tool of a plurality of handheld upgrade tools is attached to the physiological monitor via the first sensor port,
authenticate the handheld upgrade tool for the physiological monitor by verifying that the handheld upgrade tool is authorized to access the physiological monitor, and
identify a tool type of the handheld upgrade tool, and
a plurality of firmware instructions residing on the processor board, wherein a first set of the plurality of firmware instructions is made available to and is executable by the monitor DSP so as to cause the sensor to emit a plurality of wavelengths of light, receive a sensor signal from the sensor in response to absorption of the plurality of wavelengths of light by a patient, and calculate a plurality of physiological parameters in response to the sensor signal received from the sensor, wherein a second set of the plurality of firmware instructions relating to calculation of at least one additional physiological parameter is not made available to the monitor DSP,
wherein the handheld upgrade tool is different from the sensor and individually attachable to the first sensor port in lieu of the sensor, the handheld upgrade tool comprising:
a tool DSP configured to:
authenticate the physiological monitor for the handheld upgrade tool by verifying that the physiological monitor is authorized to access the handheld upgrade tool,
identify a board type of the processor board, and
based on a determination that the board type of the processor board matches the tool type of the handheld upgrade tool, provide changes to the plurality of firmware instructions residing on the processor board, wherein the changes to the plurality of firmware instructions make available to the physiological monitor the second set of the plurality of firmware instructions relating to the calculation of the at least one additional physiological parameter in response to the sensor signal received from the sensor;
a sensor port connector that mates directly with the first sensor port and provides a communications path between the tool DSP and the monitor DSP; and
an I/O port connector different from the sensor port connector and configured to provide a communications path between the tool DSP and an external digital device different from the physiological monitor,
wherein the sensor and the handheld upgrade tool attach to the first sensor port individually at distinct time intervals.
2. The parameter upgrade system according to claim 1 , wherein the handheld upgrade tool comprises a board enable tool having the tool DSP programmed to enable the monitor DSP to calculate available physiological parameters to be displayed by physiological monitor.
3. The parameter upgrade system according to claim 1 , wherein the handheld upgrade tool comprises an end-user tool having the tool DSP programmed to communicate to the monitor DSP to add available physiological parameters after the monitor DSP has been enabled.
4. The parameter upgrade system according to claim 1 , wherein the handheld upgrade tool comprises a demo tool to indicate to the monitor DSP to verify available parameters.
5. The parameter upgrade system according to claim 1 , further comprising a manufacturer application program executing on a PC and in communications with the tool DSP via the I/O port connector, wherein the manufacturer application program configures the tool DSP with at least one of a tool parameter and a number of parameter updates that can be made with the handheld upgrade tool.
6. The parameter upgrade system according to claim 5 , further comprising a field application executing on the PC and in communications with the handheld upgrade tool via the I/O port connector, wherein the field application causes display of at least one of the tool parameter and the number of parameter updates that can be made with the handheld upgrade tool.
7. The parameter upgrade system according to claim 1 , wherein the handheld upgrade tool selectively provides changes to the plurality of firmware instructions based on an identifier of the plurality of firmware instructions.
8. A parameter upgrade method comprising:
providing a physiological monitor having a sensor port configured to communicate with a sensor, the physiological monitor further having a plurality of firmware instructions residing on a processor board, wherein a first set of the plurality of firmware instructions is made available to a monitor digital signal processor (DSP), which allows the monitor DSP of the physiological monitor to calculate a plurality of parameters associated with a physiological state of a living being in response to physiological data received from the sensor, wherein the physiological data corresponds to an absorption of a plurality of wavelengths of light emitted by the sensor, wherein a second set of the plurality of firmware instructions relating to calculation of at least one additional physiological parameter is not made available to the monitor DSP;
configuring the sensor port to communicate with at least one upgrade tool in lieu of the sensor;
attaching a first handheld upgrade tool different from the sensor and individually attachable to the sensor port in lieu of the sensor, the first handheld upgrade tool comprising:
a tool DSP,
a sensor port connector configured to mate directly with the sensor port and provide a communications path between the tool DSP and the monitor DSP, and
an I/O port connector different from the sensor port connector and configured to provide a communications path between the tool DSP and an external digital device different from the physiological monitor;
authenticating the physiological monitor for the first handheld upgrade tool and the first handheld upgrade tool for the physiological monitor, wherein said authenticating comprises:
communicating an encrypted handshake between the physiological monitor and the first handheld upgrade tool,
verifying that the physiological monitor is authorized to access the first handheld upgrade tool, and
verifying that the first handheld upgrade tool is authorized to access the physiological monitor;
responsive to the authentication, determining that a processor board type of the processor board matches a tool type of the first handheld upgrade tool;
based on the determination that the processor board type matches the tool type, analyzing the first set of the plurality of firmware instructions using the first handheld upgrade tool; and
updating the plurality of firmware instructions residing on the processor board to make available to the monitor DSP the second set of the plurality of firmware instructions, wherein said updating the plurality of firmware instructions enables the physiological monitor to calculate the at least one additional physiological parameter in response to the physiological data received from the sensor.
9. The parameter upgrade method according to claim 8 , further comprising attaching a demo tool to the sensor port so as to communicate via a demo tool DSP to the monitor DSP to verify available parameters.
10. The parameter upgrade method according to claim 9 , further comprising attaching an enable tool to the sensor port so as to communicate via an enable tool DSP to the monitor DSP to enable output measurement data for the available parameters.
11. The parameter upgrade method according to claim 10 , further comprising attaching a second handheld upgrade tool to the sensor port so as to communicate via a second tool DSP to the monitor DSP additional parameters that are to be made available for output by the psychological monitor.
12. The parameter upgrade method according to claim 11 , further comprising disabling use of the first handheld upgrade tool with the psychological monitor after the enable tool has been attached to the psychological monitor.
13. The parameter upgrade method according to claim 8 , further comprising:
interfacing a PC to the I/O port connector; and
executing a manufacturing application on the PC so as to program the first handheld upgrade tool with the second set of the plurality of firmware instructions.
14. The parameter upgrade method according to claim 13 , further comprising executing a field application on the PC so as to read from the first handheld upgrade tool the second set of the plurality of firmware instructions.