US20050133027A1 - Modular medical care system - Google Patents
Modular medical care system Download PDFInfo
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- US20050133027A1 US20050133027A1 US10/974,983 US97498304A US2005133027A1 US 20050133027 A1 US20050133027 A1 US 20050133027A1 US 97498304 A US97498304 A US 97498304A US 2005133027 A1 US2005133027 A1 US 2005133027A1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0002—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network
- A61B5/0015—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network characterised by features of the telemetry system
- A61B5/002—Monitoring the patient using a local or closed circuit, e.g. in a room or building
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/41—Detecting, measuring or recording for evaluating the immune or lymphatic systems
- A61B5/412—Detecting or monitoring sepsis
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
- G16H40/00—ICT specially adapted for the management or administration of healthcare resources or facilities; ICT specially adapted for the management or operation of medical equipment or devices
- G16H40/60—ICT specially adapted for the management or administration of healthcare resources or facilities; ICT specially adapted for the management or operation of medical equipment or devices for the operation of medical equipment or devices
- G16H40/67—ICT specially adapted for the management or administration of healthcare resources or facilities; ICT specially adapted for the management or operation of medical equipment or devices for the operation of medical equipment or devices for remote operation
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
- G16H15/00—ICT specially adapted for medical reports, e.g. generation or transmission thereof
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
- G16H40/00—ICT specially adapted for the management or administration of healthcare resources or facilities; ICT specially adapted for the management or operation of medical equipment or devices
- G16H40/20—ICT specially adapted for the management or administration of healthcare resources or facilities; ICT specially adapted for the management or operation of medical equipment or devices for the management or administration of healthcare resources or facilities, e.g. managing hospital staff or surgery rooms
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
- G16H50/00—ICT specially adapted for medical diagnosis, medical simulation or medical data mining; ICT specially adapted for detecting, monitoring or modelling epidemics or pandemics
- G16H50/20—ICT specially adapted for medical diagnosis, medical simulation or medical data mining; ICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for computer-aided diagnosis, e.g. based on medical expert systems
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Abstract
A modular medical care system, housing a plurality of different modules providing different functions used in delivering healthcare to a patient, includes a plurality of different modules including: (a) a patient monitoring module for acquiring and processing signals derived from sensors suitable for attachment to a patient; and (b) a patient treatment module for delivering treatment to the patient. A processor processes signals derived from the plurality of different modules. A communication interface provides bidirectional communication between the processor and the plurality of different modules via a network.
Description
- The present invention relates to a modular medical care system, and in particular to a modular healthcare processing and display system.
- Hospitals routinely monitor physiological parameters of patients from first entry until final release. Originally, this was performed by one or more patient monitoring devices, such as a heart rate monitor, an EKG monitor, an SpO2 monitor, and so forth. These physiological parameters were separately detected by separate pieces of equipment, possibly manufactured by respectively different manufacturers. The monitoring equipment included the connections to the patient necessary to measure the physiological parameter and a display device of the type necessary to display the physiological parameter in an appropriate manner. A healthcare worker, such as a nurse, visited the patient's location and looked at each separate system to accumulate the patient's vital signs.
- Current systems have integrated measurement of some of the physiological parameters (e.g. EKG, SpO2, etc.) into a single patient monitoring device. Such a device includes the patient connections necessary to measure the physiological parameters measurable by the device and a display device which can display the measured physiological parameters in an appropriate manner. Such patient monitors may be considered to be partitioned into two sections. A first, operational, section controls the reception of signals from the electrodes connected to the patient and performs the signal processing necessary to calculate the desired physiological parameters. A second, control, status and communication, section interacts with a user to receive control information and with the operational section to receive the physiological parameters, and displays status information and the values of the physiological parameters in an appropriate manner. Either or both of these sections may include a computer or processor to control the operation of that section. This approach has an economic advantage since the control, status and communication section is shared among the parameter monitoring functions.
- Such patient monitors may also be connected to a central hospital computer system via a hospital network. In this manner, data representing patient physiological parameters may be transferred to the central hospital computer system for temporary or permanent storage in a storage device. Data received from the patient monitors may also be monitored by a person, such as a nurse, at the central location. The stored data may be retrieved and analyzed by other healthcare workers via the hospital network. Patient monitors in such a networked system include a terminal which is capable of being connected to and communicating with the hospital network. In such a patient monitor, the control, status and communication section controls, not only the display of the physiological parameters, but also the connection to the hospital network and the exchange of the physiological parameters with other systems, such as other patient monitors and/or the central computer storage device, via the hospital network.
- Such patient monitoring modules may also be portable. That is, they may operate while being transported with a patient who is being moved from one location to another in the hospital, for example, between a patient room and a therapy or operating room. A portable patient monitor consists of a base unit, and a portable unit which may be docked and undocked from the base unit. Base units may be placed at appropriate locations in the hospital. They are permanently connected to the hospital network and receive power from the power mains. The portable unit includes the necessary patient connections, connections for docking with base units, and a display screen. The portable unit also includes a processor which controls the operation of the portable unit The portable unit further includes a battery and an internal memory device.
- While the portable unit of the patient monitor is docked, the batteries are recharged, and data representing physiological parameters are transmitted to the central hospital computer through the base unit via the hospital network. While the portable unit of the patient monitor is undocked, it runs on battery power. During transportation, the patient monitor continues to receive and display physiological parameters, and stores a record of those parameters in the internal memory device. If a base unit is available at the destination, the portable unit may be docked there. Communications is reestablished with the hospital central computer, and battery recharging commenced. At this time, data representing the previously stored parameters is retrieved from the internal memory device and transmitted to the storage device in the central hospital computer via the hospital network.
- In such a patient monitor, the control, status and communication section controls, not only display of the physiological parameters, and communication of those parameters to the hospital network via the docking unit, but also detection of docking and undocking, control of power (either from the base unit when docked or the internal battery when undocked), storage of physiological parameter data in internal memory when the patient monitor is undocked, and transmission of stored physiological parameter data when the patient monitor is redocked.
- Patient monitors have also been adapted to be used to transmit information to the hospital network from other modules. These modules may be patient monitoring modules measuring physiological parameters which are not measured by the patient monitor, or patient treatment modules reporting the status of treatments being provided to the patient. Such patient monitors include input terminals, or wireless input ports, to which these other monitoring modules are connected. Information from these modules is passed through the patient monitor to the hospital network through the base unit.
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FIG. 1 is a block diagram of ahospital 100 operating in the manner described above. InFIG. 1 , four rooms in a hospital are illustrated: anoperating room 102, an intensive care unit (ICU)room 104, anemergency room 106 and anothercritical care room 108. Theoperating room 102, the ICUroom 104 and theemergency room 106 include a patient monitor device as described above. Each patient monitor includes a connection to a criticalcare area network 110, either directly from the patient monitor or through a base unit (not shown). Each patient monitor also includes patient connections to electrodes attachable to the patient, not shown to simplify the figure. The patient monitors also receive data from other devices and forward that data to the critical care area network. In theoperating room 102, an anesthesia device and fluid management device are coupled to the criticalcare area network 110 through the patient monitor; in the ICU room a ventilator device and fluid management device are coupled to the criticalcare area network 110 through the patient monitor; and in the emergency room 106 a ventilator device is coupled to the criticalcare area network 110 through the patient monitor. In the other critical care room 108 a ventilator device is coupled directly to the criticalcare area network 110, either directly or through its own base unit. - A patient monitor is passive in the sense that it monitors physiological parameters of the patient to which it is attached. However, other medical devices are active in the sense that their operation affects the patient in some manner. For example, the anesthesia device controls the administration of anesthesia to a patient, e.g. during an operation; the fluid management device controls the administration of fluids (blood, saline, and/or medication) to a patient; the ventilator device assists or controls breathing of a patient, e.g. during an operation, and so forth. The active devices also include a computer or processor which controls the operation of the device. These devices also may be connected to a hospital network through a base unit. This allows a central location to not only monitor but also to control the active device. As with the patient monitoring device, an active device, such as a fluid monitoring device, may be portable in the sense that a control module, including a processor, may be undocked from a fixed unit. This control module continues to operate the device, at the last received control settings, e.g. while a patient is transported from one location to another. When at the new location, the control module may be docked in a fixed unit at the new location and control by a central computer resumed.
- The modules illustrated in
FIG. 1 operate independently of each other, and each includes its own computer or processor controlling the module. This requires the presence of a base unit for each separate module. In an operating room, where many such modules may be in use concurrently, this requires space, and power. Further, each device may be docked only in a base unit for that type of device. That is, a patient monitor device may be docked only in a patient monitor base unit, a fluid monitoring device may be docked only in a fluid monitoring device base unit, and so forth. - Furthermore, each module has its own user interface which may be different from those of other modules. This complicates the job of a healthcare provider by requiring training in the operation of the different modules. It also requires that, in order to provide a desired therapy, different modules from different manufactures be assembled around the patient, hooked up to the patient, control parameters set and continued operation monitored, with the difficulty, described above, related to different user interfaces of the different modules. Separate instructions on how to operate the different modules in the proper order with the proper settings, often depending on readings from other modules, must be provided to the healthcare provider to enable the desired therapy to be provided to the patient.
- A medical care system which will alleviate the problems described above is desired.
- In accordance with principles of the present invention, a modular medical care system, housing a plurality of different modules providing different functions used in delivering healthcare to a patient, includes a plurality of different modules including: (a) a patient monitoring module for acquiring and processing signals derived from sensors suitable for attachment to a patient; and (b) a patient treatment module for delivering treatment to the patient. A processor processes signals derived from the plurality of different modules. A communication interface provides bidirectional communication between the processor and the plurality of different modules via a network.
- In the drawing:
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FIG. 1 is a block diagram of a prior art hospital system for monitoring patients and providing treatment to patients; and -
FIG. 2 is a block diagram of a hospital system for monitoring patients and providing treatment to patients according to principles of the present invention; -
FIG. 3 is a more detailed block diagram illustrating the interconnections of the central processor and the patient monitoring and treatment modules; -
FIG. 4 is a more detailed block diagram of a central unit illustrated inFIG. 3 ; -
FIG. 5 is a diagram illustrating the relationship between different components of the software controlling the central unit. -
FIG. 2 is a block diagram of ahospital system 200 for monitoring and providing treatment to patients. InFIG. 2 , the same four rooms are illustrated as are illustrated inFIG. 1 , and those rooms contain the same medical equipment. Theoperating room 202 includes apatient monitoring module 210 for acquiring and processing signals derived from sensors (not shown) suitable for attachment to a patient. Theoperating room 202 also includes patient treatment modules: a fluid infusion (IV pump) control andmanagement module 212 and ananesthesia module 214. These modules (210, 212 and 214) are coupled to acentral processor 220 via a patient area network (PAN) 216. Thecentral processor 220 is coupled to adisplay generator 222 which is coupled to adisplay device 223. Thedisplay generator 222 is also optionally coupled to aslave display device 224, as illustrated in phantom. TheICU room 204 includes a monitor module, a fluid management patient treatment module and a ventilator module, coupled to a central processor via a PAN. Theemergency room 206 includes a monitor module and a ventilator patient treatment module coupled to a central processor via a PAN. The othercritical care room 208 includes a ventilator patient treatment module coupled to the central computer via aPAN 216. - In operation, the
PAN 216 may be implemented in any manner allowing a plurality of modules to intercommunicate. For example, thePAN 216 may be implemented as an Ethernet network, either wired or wireless (WLAN). If implemented as a wireless network, it may be implemented according to available standards, such as: (a) a WLAN 802.11b compatible standard, (b) 802.11a compatible standard, (c) 802.11g compatible standard, (d) Bluetooth 802.15 compatible standard, and/or (e) GSM/GPRS compatible standard communication network. - The
patient monitoring module 210 corresponds to the operational portion of a prior art patient monitor described above. It receives signals from the electrodes and sensors attached to the patient, performs the signal processing required to calculate the physiological parameters, and provides that information to thecentral processor 220 via thePAN 216. Similarly, the patient treatment modules, i.e. thefluid management module 212 and theanesthesia module 214, correspond to the operational portion of the prior art treatment modules described above. Thepatient treatment modules central processor 220 via thePAN 216 and in response perform their treatment functions, e.g. monitoring fluids administered to the patient and supplying anesthesia to the patient, respectively. Concurrently, thepatient treatment modules central processor 220 via thePAN 216. Thecentral processor 220 processes the signals received from thepatient monitoring module 210 and thepatient treatment modules - The
central processor 220 interacts with the user to receive patient identifier information and treatment instructions and parameters. Thecentral processor 220 configures thepatient treatment modules patient treatment modules PAN 216. - The patient monitoring and/or
treatment modules central processor 220, for controlling the operation of themodule central processor 220 via thePAN 216. The configuration parameters may include patient identifier information, set-up parameters, and/or data representing executable instructions for execution by the processor in themodule central processor 220. Themodules central processor 220. - As described above, there may be more than one
central processor 220 in remote locations in the hospital. If amodule central processor 220, then the patient identifier information, the set-up parameters and/or the executable instructions previously sent to it are used to control the operation of thatmodule disconnected module central processor 220, possibly in a different location than thecentral processor 220 from which it is disconnected, then the reconnectedmodule central processor 220 to which it is connected. - The
central processor 220 also receives signals representing physiological parameters from thepatient monitoring module 210 and possibly from thepatient treatment modules central processor 220 may also initiate generation of a new parameter based on signals derived using thepatient monitoring module 210 and/or thepatient treatment modules - The
central processor 220 conditions thedisplay generator 222 to generate signals representing an image for displaying these physiological parameters in an appropriate manner, e.g. a waveform, a status phrase or a number. Thedisplay generator 222 is coupled to thedisplay device 223 which displays this image. Thedisplay generator 222 may optionally send appropriate image representative signals to theslave display device 224. Theslave display device 224 may have a larger, higher resolution screen, or may simply be a display device at a location remote from the location of the central processor. The image generated by thedisplay device 223, under the control of thecentral processor 220 anddisplay generator 222, may also integrate the display of patient identification, treatment instructions and parameters and status from thepatient treatment modules patient monitoring modules 210 andpatient treatment modules display devices - The
central processor 220 may also communicate with the central processors of corresponding processing device and display systems in other locations in the hospital, such as those in theICU room 204, theemergency room 206 and the othercritical care room 208 via the criticalcare area network 205. Thecentral processor 220 may optionally communicate with a central hospital location via ahospital network 230, illustrated in phantom inFIG. 2 . In this manner, patient physiological parameters and treatment instructions, parameters and status may be transmitted to a central location and stored in acentral storage device 232, also illustrated in phantom. -
FIG. 2 illustrates apatient monitoring module 210, and patient treatment modules forfluid management 212,anesthesia control 214, and ventilation control. However, one skilled in the art will understand that there are other monitoring and treatment devices which may include patient treatment modules for control and communication, such as: (a) an incubator, (b) a defibrillator, (c) a warming module, (d) a diagnostic imaging module, (e) a photo-therapy module, (f) a fluid input support module, (g) a fluid output support module, (h) a heart—lung support module, (i) a blood gas monitor, (j) a controllable implanted therapy module, (k) a controllable surgical table and weighing scale, and so forth. Modules for command and communication related to these and other patient treatment devices may be used as illustrated inFIG. 2 . -
FIG. 3 is a more detailed block diagram illustrating the system illustrated inFIG. 2 . InFIG. 3 , those elements which are the same as illustrated inFIG. 2 are designated by the same reference number and are not discussed in detail below.FIG. 3 illustrates the system as it would be implemented in one of therooms FIG. 2 . InFIG. 3 , thecentral processor 220 and thedisplay generator 222 are comprised within acentral unit 300. Thecentral unit 300 is a housing containing the circuitry and connectors necessary to interconnect thecentral processor 220 and thedisplay generator 222 with: the patient monitoring andpatient treatment modules display devices multi-patient LAN 205 andhospital LAN 230. - The
central processor 220 is coupled to a communications andpower hub 235. The communications andpower hub 235 comprises the patient area network (PAN) 216 and also aset 240 of module connectors coupled to the PAN 216: e.g. apatient monitor connector 241, aventilator connector 243, a fluidmanagement hub connector 245, an anesthesiadelivery system connector 247 and a fluid (IV pump)management connector 249. Theconnectors 240 permit theindividual modules central unit 300 as required. In one embodiment, a user may activate a single mechanical release mechanism to remove amodule central unit 300 or reattach a module to thecentral unit 300. Theconnectors 240 pass data signals between themodules central processor 220 via thePAN 216. - The communications and
power hub 235 further comprises apower bus 234 for distributing power to thecentral unit 300. Thepower bus 234 is further coupled to thePAN 216 for receiving commands from and returning status to thecentral processor 220. Thepower bus 234 is also coupled to the connectors 240 (not shown to simplify the figure) to distribute power to the patient monitoring and/ortreatment modules central processor 220 may manage the power-on and power-off status of the patient monitoring andtreatment modules central processor 220. - As described above, at least some of the attached
modules central unit 300. When docked, thecentral processor 220 conditions thesemodules power bus 234 and recharge their batteries. The internal power supply circuitry of thesemodules central processor 220 through theconnectors 240 andPAN 216. Thecentral processor 220 may condition thedisplay generator 222 to generate signals representing an image showing the battery charging condition of the patient monitoring andtreatment modules central unit 300. This image may be displayed on thedisplay devices main control panel 320,slave control panel 330 and/orremote display device 224, respectively. - As described above, the
PAN 216 may be implemented as a wireless network. In such an embodiment, thecentral processor 220 may include a wireless communication interface to thePAN 216. Such an interface enables bidirectional communication with the patient monitoring andtreatment modules central unit 300. This communications link enables thecentral processor 300 to maintain control of the patient monitoring andtreatment modules - Individual patient monitoring and/or
treatment modules connectors 240. For example, apatient monitor module 210 may be plugged into themonitor connector 241, aventilator module 250 may be plugged into theventilator connector 243, and so forth. Thecentral unit 300 may includeconnectors modules connectors 240 may be the same type of matching connectors. In the former embodiment, a particular type of patient monitoring ortreatment module connector treatment module connectors - As described above, the
patient monitor module 210, plugged into themonitor connector 241, connects to a plurality of electrodes and sensors which may be placed on a patient. Amonitoring pod 211 is used to connect the patient-connected electrodes to thepatient monitor module 210. Similarly aventilator module 250 may be plugged into theventilator connector 243. Theventilator module 250, in turn, is coupled to ablower 254 and ahumidifier 252. Afluid management hub 260 is plugged into the fluidmanagement hub connector 245. Two fluid (IV pump)management modules anesthesia delivery connector 247. Theanesthesia delivery module 214 is connected to a anesthesia delivery device (not shown). Anindividual IV pump 212 is coupled to anIV pump connector 249. Similar to the otherIV pump modules management module 212 is connected to an IV pump (not shown). - The
central processor 220 is also coupled to the criticalcare area LAN 205, which, as illustrated inFIG. 2 , is coupled to othercentral units 300 in processing device and display systems in other rooms. Thecentral processor 220 may also be optionally coupled to ahospital LAN 230. Thecritical care LAN 205 requires real time bandwidth quality-of-service while thehospital LAN 230 requires standard office bandwidth quality-of-service. As described above, if connected to ahospital LAN 230, thecentral processor 220 may exchange data with acentral storage device 232, or any other desired device (not shown) at a remote location in the hospital. Data may be sent from patient monitoring and/ortreatment modules central storage device 232 through theconnectors 240 to thecentral processor 220 via thePAN 216 and from there to thecentral storage device 232 via thehospital LAN 230. In addition, control data may be sent in the other direction from the central location to a patient monitoring ortreatment module - It is further possible that a
central processor 220 in acentral unit 300 in a processing device and display system in onetreatment room central processor 220 in acentral unit 300 in a processing device and display system in adifferent treatment room FIG. 2 ) via the criticalcare area LAN 205 or thehospital LAN 230. In this manner, thecentral processor 220 in one treatment room may control the operation of the secondcentral processor 220 in the second treatment room; may display patient related data received from the secondcentral unit 300 in the different treatment room; and/or may send (a) a patient identifier identifying a particular patient and/or (b) medical information related to the particular patient to the secondcentral processor 220 in thecentral unit 300 in thesecond treatment room - It is also possible for the
central processor 220 to receive data from one or more of the patient monitoring and/ortreatment modules patient treatment modules - The
display generator 222 is coupled to amain control panel 320. Themain control panel 320 includes adisplay device 321, akeyboard 322 and a pointing device in the form of amouse 324. Other input/output devices (not shown) may be fabricated on themain control panel 320, such as: buttons, switches, dials, or touch screens; lights, LCDs, or LEDs; buzzers, bells or other sound making devices, etc. These input/output devices receive signals from and supply signals to thecentral processor 220, either through thedisplay generator 222, or through separate signal paths, not shown to simplify the figure. Themain control panel 320 may be fabricated as a part of thecentral unit 300, or may be fabricated as a separate unit. Thedisplay generator 222 is optionally coupled to aslave control panel 330, which substantially duplicates the functionality of themain control panel 320, but is located remote from thecentral unit 300. Thedisplay generator 222 is also optionally coupled to aslave display device 224. Theslave display device 224 includes adisplay device 225, but does not include any of the other input/output devices included in themain control panel 320 andslave control panel 330. - In operation, the
central unit 300 andmain control panel 320 provide control and display functions for the patient monitoring and/ortreatment modules common unit 300. A user may manipulate the input devices coupled to themain control panel 320, orslave control panel 330 if available, e.g. thekeyboard 322,mouse 324 or other input devices described above. The resulting signals are received by thecentral processor 220. In response, thecentral processor 220 sends control signals via thePAN 216 to the patient monitoring ortreatment modules central unit 300. - Concurrently, the
central processor 220 receives data signals from the patient monitoring and/ortreatment modules display generator 222 to produce a signal representing an image for displaying the data from the patient monitoring and/ortreatment modules patient monitor 210 having the capability of performing an EKG on a patient is plugged into thecentral unit 300, EKG lead data from the patient monitor 210 is supplied to thecentral processor 220 through themonitor connector 241 via thePAN 216. Thecentral processor 220, in turn, conditions thedisplay generator 222 to produce signals representing an image of the EKG lead signal waveforms. These image representative signals are supplied to thedisplay device 321 in themain control panel 320, which displays the image of the waveforms of the EKG lead signals. An image representing the heart rate of the patient, derived from the EKG lead signals, may also be similarly displayed in numeric form. Images representing other physiological parameters measured by the patient monitor 210, e.g. blood pressure, temperature, SpO2, etc. may also be displayed, in an appropriate form, on thedisplay device 321 of themain control panel 320 in a similar manner. The image data may also be displayed on thedisplay device 331 of theslave control panel 330 and on thedisplay device 225 of theslave display 224, if they are available. - In a similar manner, images representing data received from the patient treatment modules, 212, 214, 250, 260, may be displayed on the
display devices fluid management modules patient treatment devices ventilator module 250, or drip rates for attached IV pumps may be displayed in numerical form based on data received from thefluid management hub 260. - A user may select which physiological parameters to display on the
display device 321 and may arrange the location on thedisplay device 321 of the images displaying the selected physiological parameters. In addition, the user may select different physiological parameters to display on thedisplay device 321 in themain control panel 320 than on thedisplay device 331 in theslave control panel 330 and/or on thedisplay device 225 in theslave display 224. Further, theslave display device 224 may have adisplay device 225 which is larger and/or higher resolution than those in themain control panel 320 and theslave control panel 330, so that the images may be more easily seen, and/or may be displayed at an increased resolution. - The
central processor 220 may also receive data from thepower bus 234 via thePAN 216 representing the state of the power supplies in the patient monitoring andtreatment modules central processor 220 may, for example, condition thedisplay generator 222 to generate a signal representing an image representing the current charge condition of the respective batteries in the patient monitoring andtreatment modules central unit 300, either separately or in composite, based on data received from thepower bus 234. Further, the patient monitoring and/ortreatment modules central processor 220 indicating an error condition in the module. Thecentral processor 220 may condition thedisplay generator 222 to generate a signal representing an image showing the user the error condition of that module. - The
central processor 220 may also produce signals for controlling the operation of the other output devices on the main andslave control panel central processor 220 may analyze the physiological parameters derived from signals received from the patient monitoring and/ortreatment modules central processor 220 may condition the output devices on the main andslave control panel central processor 220 may generate a signal which activates a light, a buzzer, a bell and/or other such device on themain control panel 320, and/or theslave control panel 330, if available, to produce a visible or an audible alarm. Thecentral computer 220 may also send a signal over the criticalcare area LAN 205 and/or thehospital LAN 230 indicating that a limit has been exceeded. A similar alarm may be generated at the remote location in response to the receipt of this signal. -
FIG. 4 is a more detailed block diagram of acentral unit 300 illustrated inFIG. 3 . InFIG. 4 , those elements which are the same as those illustrated inFIG. 3 are designated by the same reference numbers and are not described in detail below. InFIG. 4 , thecentral unit 300 is implemented on a computer system similar to typical personal computers. In such systems, a central processing unit (CPU) 402 controls the operation of the remainder of the system. The other elements illustrated in thecentral unit 300 are coupled to theCPU 402, though the connections are not shown to simplify the figure. - In
FIG. 4 , apower supply 450 provides power to thecentral unit 300. Thepower supply 450 may be coupled to the power mains. Thepower supply 450 may also include batteries to provide power to thecentral unit 300. The batteries may operate in an emergency backup mode, in which if a power failure occurs at the power mains the battery is switched to supply power to the central unit. Alternatively, batteries may provide main power to the central unit, and the power mains used to maintain the battery at full charge, or to recharge the battery after a power failure. One skilled in the art will understand that other arrangements for supplying power to thecentral unit 300 are possible. - A
first Ethernet adapter 404 couples theCPU 402 to the patient area network (PAN) 216, which in turn is interconnected with patient monitoring and/ortreatment modules second Ethernet adapter 406 couples theCPU 402 to the criticalcare area LAN 205. Athird Ethernet adapter 432 couples theCPU 402 to thehospital LAN 230 which in turn is interconnected with thecentral storage device 232. - The
display generator 222 couples theCPU 402 to thedisplay devices main control panel 320, theslave control panel 330 and theslave display 224, respectively. A set of panel I/O ports 410 couple theCPU 402 to the panel I/O devices, described above, on themain control panel 320 and theslave control panel 330. As previously described, such I/O devices may include rotary switches, touch panels, pushbutton keys, lights, and so forth. - A
watchdog circuit 430 checks the proper operation of theCPU 402 and produces a signal indicating a fault condition if theCPU 402 is not operating properly. Thewatchdog circuit 430 may check for proper operation of theCPU 402 using any of a variety of methods. For example, thewatchdog circuit 430 may send a challenge signal at regular intervals to theCPU 402. If theCPU 402 is operating properly, it receives and recognizes the challenge signal, and provides a reply signal back to thewatchdog circuit 430. If thewatchdog circuit 430 does not receive the reply signal back from theCPU 402 within a specified time of issuing the challenge signal, then it detects a fault in theCPU 402, and produces the fault condition signal. Thewatchdog circuit 430 may also attempt to restart operation, i.e. reboot of theCPU 402, upon detecting a fault in the operation of theCPU 402. - The remainder of the elements illustrated in the
central unit 300 are typically included in personal computers. A keyboard/mouse interface 408, typically using a PS/2 or USB standard, couples thekeyboard 332 andmouse 324 to theCPU 402. Asound card 412 responds to instructions from theCPU 402 to generate sound representative signals, which may be coupled to speakers (not shown) to reproduce sound. A read-write memory unit (RAM) 414 provides local storage for programs controlling theCPU 402 and for data used and/or created by theCPU 402. Aserial port 416 exchanges serial binary data signals with external peripherals e.g. using the RS232 standard. AUSB port 418 similarly exchanges serial binary data signals with external peripherals using the USB standard. A DVD/CD player 420 allows theCPU 402 to access data on DVDs and/or CDs. It is also possible to write data onto DVDs and/or CDs. Anexpansion card port 422 allows the CPU to exchange data with portable devices, such as a Personal Computer Memory Card International Association (PCMCIA) card, Compact Flash (CF), Secure Digital (SD), and so forth. A real time clock (RTC) 424 with its associatedbattery 425, maintains and provides current time and date to theCPU 402. An integrated drive electronics (IDE)bus 426, into which conforming cards may be plugged, allow such cards to exchange information with theCPU 402. Similarly, a peripheral component interconnect (PCI) bus, into which conforming cards may be plugged, allow such cards to exchange information with theCPU 402. Cards plugged into either theIDE bus 426 or thePCI bus 428 may be coupled to peripheral devices, both internal and external to thecentral unit 300, and permit theCPU 402 to exchange data with the peripheral devices. - In operation, the
CPU 402 interacts with the peripheral devices connected to it under control of software. Because thecentral unit 300 is designed and implemented similarly to a typical personal computer, it may be controlled using software typically executed on a personal computer, augmented by executable applications for performing specialized tasks related to monitoring and providing treatment to patients. -
FIG. 5 illustrates the relationship and interaction among different components of thecentral unit 300, including both the hardware platform 504 (as illustrated inFIG. 3 andFIG. 4 ) and a systemexecutable application 500. As described above, an executable application is any set of executable instructions which may be used, e.g. to control the operation of a programmable processor. It may include software, firmware and hardware, as appropriate, and one skilled in the art will understand how to partition the executable application into software, firmware and hardware, and the design criteria and tradeoffs involved. Because, as described above, the components illustrated inFIG. 5 are implemented on a hardware system based on available PC systems, the executable application described inFIG. 5 is implemented in software, and will be termedsystem software 500 below. - Each element in
FIG. 5 is represented by a rectangle. In general, elements, and the functions they provide, at lower levels ofFIG. 5 may be accessed by elements at higher levels. At the bottom ofFIG. 5 is thehardware platform 504. Thehardware platform 504 provides the hardware functions, described in more detail above, such as: providing control signals to, and receiving status and patient physiological parameter information from, patient monitoring and/ortreatment devices care area LAN 205 andhospital LAN 230; providing image representative signals to displaydevices FIG. 3 ), exchanging signals with panel I/O devices 410 (FIG. 4 ), and so forth. Thehardware platform 504 is not part of thesystem software 500 illustrated by the remainder ofFIG. 5 . - The
system software 500 illustrated inFIG. 5 includes asoftware framework 502 providing particular functions. Thesoftware framework 502 provides the software infrastructure for support of point of care based medical modules, such as themodules FIG. 2 ,FIG. 3 ,FIG. 4 ). As used herein, the point of care (POC) is the area, in the vicinity of the patient, in which medical treatment is provided to a patient. The software illustrated inFIG. 5 may be embodied in PC based products. Table 1 (below), describes in detail the functions provided by the respective software components illustrated inFIG. 5 . - The
software framework 502 includes a hardwaredependent operating system 506, which inFIG. 5 is an embedded windows operating system (OS) 506. For example, an embedded version of Windows XP (by Microsoft Corp)OS 506 may be included in thesoftware framework 502. TheOS 506 interacts with thehardware 504, which may be different from product to product, or may change or be updated over time. TheOS 506 also provides a set of application program interfaces (APIs) which are sets of common software interfaces which may be used by the remainder of the software and which remain unchanged despite differences in thehardware 504. The remainder of the software illustrated inFIG. 5 is related to providing the functions required by the modules which may be controlled by thecentral unit 300. - The
software framework 502 further includes a set of common platform components 508 (see Table 1 (below)). These components provide monitoring and executive functions for thecentral unit 300. Specifically, a watchdog function, a resource monitor, and a monitor for critical components are provided by the common platform components 508. In addition, the common platform components 508 provide security, lifetime management, diagnostics, real time infrastructure and event management, safety and availability management, and user set up configuration support for thecentral unit 300. - The
software framework 502 also provides common communications component 510 (see Table 1 (below)). More specifically, the common communications component provides access to thePAN 216, the criticalcare area network 205 and any other networks to which thecentral unit 300 may be coupled, such as the hospital network 230 (FIG. 3 ). Thecommon communications component 510 also provides peripheral support, e.g. communications with any other auxiliary device via the serial port, 416, theUSB port 418, theexpansion card port 422 and/or any other device which may be coupled to thecentral unit 300, for example, via boards mounted in theIDE bus 426 orPCI bus 428. - The
software framework 502 also provides a common human interface component 512 (see Table 1 (below)). The commonhuman interface component 512 provides functions for displaying graphical user interfaces (GUIs) ondisplay devices FIG. 3 ,FIG. 4 ) and for coordinating the user inputs received from the input devices, such askeyboard 322 andmouse 324, with the displayed GUI. This enables a user to control the configuration and operation of the system and to receive status and data representing patient physiological parameters from the system. These functions also provide parameter signal group support, deployment support, and user help. - These functions also include those GUI functions which are specific to a patient monitoring and treatment module, for example, support for the display of waveforms, such as EKG waveforms or respirator loops, maintenance of trends, and generation of reports. These GUI functions also include the ability for a user to arrange on the screen of the display device the images representing the physiological parameters of the patient. That is, to be able to move those images around on the screen, to resize them, to remove an image displaying a physiological parameter and/or to insert an image displaying a different physiological parameter. The common
human interface 512 further supports maintenance of patient data and status, and the database containing these and/or other data items. The commonhuman interface 512 component further provides alarm support and processing, including providing functions for generating an audible and/or visible alarm at the central unit 300 (FIG. 3 ,FIG. 4 ), and for transmitting alarm information to other locations, via thePAN 216, the criticalcare area network 205 and/or thehospital network 230. The commonhuman interface component 512 also provides more standard GUI support for other software applications (described in more detail below), which may not be related directly to medical support. - The remainder of the components in the system software are
application programs 520. An application program is software which uses functions provided by thesoftware framework 502, described above, to support clinical domains and/or to provide clinical functions at the point of care. As used herein, a clinical domain is an area of a patient monitoring and/or treatment process. For example, patient monitoring is a clinical domain; patient ventilation is another clinical domain; anesthesia and fluid administration are others, and so forth. Thesystem software 500 includes several types ofapplication programs 520. - The
application programs 520 include a set of common point of care (POC) applications 522 (CPOC) which are common to the clinical domains (see Table 1 (below)). The functions provided by theCPOC 522 are application-related but generic and not specific to any particular domain. That is, thecentral processor 402 in thecentral unit 300 executes at least a portion of the common code in theCPOC application 522 to support the operation of two or more of the patient monitoring and/ortreatment modules - For example, the
CPOC application 522 may provide a home screen from which other functions may be selected and configured. Functions for configuring and controlling thecentral unit 300 itself may be selected from the home screen, including: software option handling; application selection and configuration; remote control, both wired and wireless, from e.g. slave control units (FIG. 4 :330) or other central units via the criticalcare area network 205 and/or the hospital area network 230 (FIG. 2 ); battery management; and so forth. In addition, functions related to patients may be selected from the home screen, including patient category, configuration, context, setup and demographic entry, editing, and transfer. TheCPOC application 522 may also provide functions related to monitoring and/or treating patients, including: real-time processing of measurements, waveform display; alarm behavior, display and control; measurement setup and priority, events, trends, strip recordings; loop display; flow meter display; alarm limits and history, and so forth. - One skilled in the art will recognize that point of care (POC) patient monitoring and/or treatment modules, e.g. 210, 212, 214, 250, 260 (
FIG. 3 andFIG. 4 ), are typically associated with a specific clinical domain. That is, themonitoring module 210 is associated with the patient monitoring domain; theanesthesia module 214 is associated with the anesthesia domain, and so forth. Specific POC applications (SPOC), of which three 523, 524, 526 are shown to simplify the figure, respectively correspond to POC modules for specific domain areas. Therespective SPOC applications modules FIG. 5 ,SPOC 523 may be associated with one type of POC module,e.g. anesthesia module 214;SPOC 524 may be associated with a different type of POC module, e.g.fluid management module 212; andSPOC 526 may be associated with another POC module, e.g.patient monitoring module 210. - Typically,
SPOC applications modules FIG. 2 ,FIG. 3 andFIG. 4 ), which may be connected to and disconnected from thecentral unit 300 during operation. The FE module interface function e.g. 523D, bidirectionally communicates with patient monitoring andtreatment modules display devices FIG. 3 ). The control and management function e.g. 523B controls the operation of the SPOC and the FE module. - More specifically, the
SPOC application 526, which is associated with apatient monitoring module 210, provides the specific functions required to control and interact with themonitoring module 210. As described in more detail in Table 1 (below), the monitoringSPOC 526 provides module management, control and report functions, such as: monitor setup; export protocol management; nurse call; and setting display modes, including bedside and surgical display modes. Themonitoring SPOC 526 also provides physiological parameter monitoring functions, such as: EEG, SpO2,respiratory mechanics, invasive and non-invasive blood pressure, body temperature, transcutaneous blood gases, and so forth. - The
SPOC application 523, which is associated with theanesthesia module 214, provides the specific functions required to interact with theanesthesia module 214. As described in more detail in Table 1 (below), theanesthesia SPOC 523 provides module management, control and report functions such as: warm up; carrier gas selection, and so forth. Theanesthesia SPOC 523 also provides anesthesia control and monitoring functions, such as anesthetic gas control, including N2O, Xenon, etc.; consumption monitoring, and anesthetic gases supply, and so forth. - The
SPOC application 524, which is associated with thefluid management module 212, provides the specific functions required to interact with thefluid management module 212. As described in more detail in Table 1 (below), thefluid management SPOC 524 provides functions supporting different fluid managements modes, including: total controlled infusion (TCI), total intravenous anesthesia (TIVA), and patient controlled analgesia (PCA). As described above, other medical monitoring and/ortreatment modules - The
application programs 520 further include cross domain POC applications (CDPOC), one of which 528 is shown inFIG. 5 to simplify the figure. CDPOC applications provide advanced integrated clinical information. This information may be derived from cooperative operation of two or moreselected SPOC applications treatment modules treatment modules application programs 520 which coordinate different SPOC applications; that more than two SPOC applications may be coordinated by a CDPOC application, and that an SPOC application may be associated with more than one CDPOC application. - Referring specifically to
FIG. 5 , theCDPOC application 528 coordinates the operation of thefluid management SPOC 524 and themonitoring SPOC 526. Thefluid management SPOC 524 controls the operation of a fluidmanagement treatment module 212 which may be administering a medication to affect a particular patient physiological parameter, such as blood pressure. Themonitoring SPOC 526 controls the operation of thepatient monitoring module 210 to monitor the patient blood pressure, among other things. TheCDPOC application 528 monitors the patient blood pressure, as reported by the monitoringSPOC application 526 and controls the fluidmanagement SPOC application 524 to continually adjust the administration of the blood pressure medication to maintain the patient blood pressure within limits specified by the physician. - The
application programs 520 may further includeimaging applications 530, as described in more detail in Table 1 (below). These applications condition the various display devices, 225, 321, 331 (FIG. 3 ) to display designated images in 2D and 3D modes. Theseimaging applications 530 further provide user control of panning and zooming, and for 3D images setting a point of view. Theimaging applications 520 may also be used to produce: a virtual film sheet for e.g. x-rays, CAT scans, or any other group of related images; a patient scanner; a viewer for DICOM (Digital Imaging and Communications in Medicine) images retrieved via a query/retrieve operation, and so forth. - The
application programs 520 may further include information technology (IT)applications 532, as described in more detail in Table 1 (below). Such applications may include e.g. a chart assistant program, a remote viewing program, and other programs for exchanging and analyzing information. Otherthird party applications 534 may also be included in theapplication programs 520. As used herein,third party applications 534 may provide clinical functions which may provide a benefit at the point of care, and may be developed outside and independently of the architecture developed for thecentral unit 300 to interact with the medical monitoring and/ortreatment modules party application programs 534. - A Semantical Product Application (SPA) 536 provides coordination for the
application programs 520 included in the system software. TheSPA 536 covers the target domain or domains of the system, as configured with selected medical monitoring and/ortreatment modules SPA 536 uses, deploys and combinesother application programs 520. More specifically, theSPA 536 includesSPOC CPOC 522 configuration; andCDPOC 528 configuration functions, and so forth. TheSPA 536 also provides version management for the system. - The
central units 300 in the respective critical areas and/or the hospital employ substantially the same type ofCPU 402 and are implemented to support the operation of the different types of patient monitoring and/ortreatment modules central processor 220 in the respectivecentral units 300 in the critical care area and/or the hospital employ substantially thesame system software 500, described above, supporting the operation of the patient monitoring and/ortreatment modules - The hardware and software architecture described above and illustrated in
FIG. 2 ,FIG. 3 ,FIG. 4 andFIG. 5 allows implementers to develop different products which address a desired medical domain or domains. As used herein, a product addresses the desired domains using the hardware and software architecture to provide a well defined set of applications for the target domains. That is a fabricator may produce a monitoring product by including a monitoring SPOC (e.g. 526) and a patient monitoring module (e.g. 210). Alternatively, further capability may be included, such as including a ventilation SPOC (not shown) and a ventilation patient treatment module (also not shown), a fluid management SPOC (e.g. 524) and a fluid management patient treatment module (e.g. 212), and an anesthesia SPOC (e.g. 523) and an anesthesia patient treatment module (e.g. 214). A CDPOC (e.g. 528) application may be added to coordinate the operation of two or more SPOC applications. - More specifically, a fabricator may implement a product such as a transportable breathing support equipment system. Such a device is illustrated in
FIG. 2 inroom 208. This system includes a central unit 300 (FIG. 3 ) (not shown) which incorporates acentral processor 208B anddocking connectors 240. Aventilator module 208A is coupled to thecentral processor 208B and adisplay device 208C via aPAN 208D. Theventilator module 208A controls a ventilator device (not shown) The ventilator device regulates the flow of breathable gas from a source (not shown) to the lungs of the patient. Theventilator module 208A includes at least one battery which powers themodule 208A and the ventilator device itself during transportation. Thedocking connectors 240 allow other modules, such as apatient monitoring module 210, ananesthesia module 214 and/or afluid management module 212, to be connected to the breathing support equipment system if desired. The system software 500 (FIG. 5 ) detects the presence of these modules and automatically loads the SPOC applications required to control the newly added modules, 210, 212, 214, 250, 260. The transportable breathing support equipment system may comprise a manually pushed, or power driven cart or trolley conveying the equipment. - Other products such as an emergency room product as illustrated in room 206 (
FIG. 2 ) and including a patient monitoring and ventilator module, or an ICU room product as illustrated inroom 204 with a patient monitoring, ventilator and fluid management module, both with capabilities of adding further modules as required, may be implemented in a similar manner. - As described above, a
CDPOC application 528 can advantageously coordinate the operation of two ormore SPOC applications treatment modules FIG. 2 ) to support monitoring operation of apatient treatment module patient monitoring module 210 and apatient treatment modules patient treatment module - The
central processor 220 may also verify the safety of the treatment by receiving data from the patient monitoring and/ortreatment modules patient treatment modules central processor 220 may verify the safety of a desired treatment by comparing patient physiological parameters received following initiation of delivery of a treatment, or following a change in the treatment induced by a corresponding change in the settings of apatient treatment module patient treatment module central processor 220 may (a) automatically alter the settings and/or (b) initiate generation of an alert message to a user warning of the incompatibility. - This coordination among different patient monitoring and/or
treatment modules FIG. 4 andFIG. 5 , for example, advantageously automatically performs multiple different tests as described as follows. The tests in some instances may involve manual interaction. One skilled in the art will understand which patient monitoring and/or treatment modules to include in the system, how to coordinate the operation of these modules, and how to analyze the data from those modules to perform the desired medical tests. - A general form of such patient medical tests involves providing a predetermined physiological stimulus to a patient, monitoring the patient physiological parameters after the stimulus, and verifying an acceptable response. For example, the physiological stimulus may be (a) a medication, (b) a gas administered to said patient, (c) an electrical stimulus, (d) a physical or mechanical stimulus, (e) an application of heat or cold, (f) an acoustic stimulus, (g) a light stimulus and/or (h) a radiation stimulus. The patient physiological parameters monitored may be (a) BP, (b) HR, (c) RR, (d) SpO2, (e) O2, (f) CO2, (g) NBP, (h) EEG and/or (i) blood gas parameters.
- In the system described above, the central processor 220 (
FIG. 4 ) may initiate a stimulus by conditioning apatient treatment module patient monitoring module 210 to monitor subsequent physiological parameters to verify an acceptable response. - A more specific example of a medical test is a respiratory systolic variation test (RSVT), which may be performed by such a system. This test determines the blood filling conditions in the left atrium. It enables a physician to manage fluid input and output of a patient, and lung recruitment efforts (hypovolemea is often the reason for a patient not tolerating pressure-controlled inverse ratio ventilation (PCIRV)). The result of this test is a patient physiological parameter which may be displayed on the
display devices FIG. 3 ). Use of the system described above to provide the RSVT test is more accurate and less invasive than the use of a single use PA catheter, which at the present time costs around $100. - A Gedeon non-invasive cardiac output test (NICO) may also be performed by the system described above. This test estimates output of the left ventricle and effective gas exchange area of the lungs (i.e. the effective lung volume (ELV). It enables a physician to titrate the positive end-expiratory pressure (PEEP) for optimal CO and ELV after initiating mechanical ventilation. As used herein, the term “titrate” refers to the adjustment of a patient treatment parameter (such as the PEEP pressure) such that a desired patient physiological parameter is achieved (that is, optimal CO and ELV). The titration may be performed manually by the physician in response to the results of the test, or may be performed automatically under the control of a CDPOC (not shown) programmed to perform the test and titrate the PEEP parameter. The results of this test may be displayed on the
display devices FIG. 3 ). This test also aids a physician in starting or monitoring inotropic (i.e. cardiac output enhancing) drug therapy. Use of the system described above to perform the NICO test is less invasive than the conventional method and more accurate than other NICO methods. - A lung mechanics calculation test (LMC) may also be performed by the system described above. This test permits the modeling of a patient respiratory system in terms of elastic and resistive forces. More specifically, this test may determine inflection points in the respiratory cycle, i.e. points of alveolar collapse (atelectasis) during expiration and hyperinflation during inspiration. This test may also calculate physiological dead space, i.e. air which is inhaled by the body in breathing, but which does not partake in gas exchange. The results of the former test may be numerical or a graphic display, and the results of the latter test may be a numerical display, either or both of which may be displayed on the
display devices FIG. 3 ). The physician may use the results of this test to titrate the settings after initiating mechanical ventilation, or a CDPOC may be programmed to titrate the settings automatically. The LMC test has been tested and widely published. It is considered state-of-the-art at this time for lung mechanics. The NICO test requirements, described above, may be combined with this test. - A stress index test (SI) may also be performed by the system described above. This test quantifies the stress on the lungs induced by mechanical ventilation. More specifically this test detects and measures the effect of cyclic stretch, i.e. recruitment of alveola at the extreme end of inspiration and collapse at the extreme end of expiration. The results of this test may be numeric or graphical and may be displayed on the
display devices FIG. 3 ). A physician may use the results of this test to titrate ventilator settings, such as PEEP and tidal volume (VT) to reduce stress on the lungs during ventilation, or a CDPOC may be programmed to titrate the settings automatically. The results of this test may also be used to predict the probability of success of a lung recruitment attempt. Ventilator settings made according to the Si test have been proven to reduce inflammatory markers in lung tissue. - An automatic lung parameter estimator test (ALPE) may also be performed by the system described above. This test assists a physician in quantifying the amount of pulmonary shunt and the distribution of pulmonary circulation (e.g. ventilation-perfusion ratio (V/Q) scatter). This test may also detect and quantify cardiac congestion, i.e. congestive heart failure (CHF). The results of this test may be numeric or graphical and may be displayed on the
display devices FIG. 3 ). A physician may use the results of this test to determine the use of diuretics and inotropic drugs to manage CHF. This test provides a comprehensive model of hemodynamic status and blood gasses non-invasively. This may be useful to a physician in the detection and management of CHF, which is a widespread disease, especially prevalent among respiratory patients. - Diaphragm electromyographically (EMG) controlled ventilation may also be advantageously performed by the system described above. In this ventilation mode the electrical signal related to the diaphragm muscle contraction is detected using electrodes on an oesphageal catheter. Because contraction of the diaphragm muscles occurs when a patient begins to take a breath, the EMG signal may be used to trigger the ventilator to begin a respiration cycle. Thus, this ventilation mode permits the patient's brain to advantageously control respiratory support. This mode may be selected by a user selection via the interaction of the GUI and user input devices such as the
keyboard 322 andmouse 324, or by panel I/O devices on themain control panel 320 and/or slave control panel 330 (FIG. 3 ,FIG. 4 ). Using EMG signals to trigger respiration permits ventilation to be more closely matched to the patient. This enables support of spontaneous breathing for a wider range of patients. This, in turn, makes mask ventilation more feasible, reducing complications associated with intubation, such as nosocomial pneumonia. These electrical signals may also provide ECG signals to measure the posterior of the heart and potentially detect atrial arrhythmias. The results of an ECG using EMG signals may be displayed on thedisplay devices - The system described above may also be used to perform electrical impedance tomography (EIT). EIT may provide continuous, breath-to-breath, and beat-to-beat anatomical images of respiratory and cardiac dynamics and distribution, respectively. More specifically, the physician may see and quantify areas of atelectasis and hyperinflation in the lungs and/or may see and quantify the output of the right ventricle and the deposition of blood in the lungs with each heartbeat. Electrodes for providing current and sensing voltage are applied to the patient and appropriate signals are applied to them to sense the conductivity of the respective portions of the body. From these readings, an anatomical image, or real-time series of images, may be synthesized. The display generator 222 (
FIG. 4 ) generates signals representing these patient anatomical images. In order to maintain the display of these images in real time, the interface between theprocessor 402 and thedisplay generator 222 provides substantially real time bidirectional communications. These images may be displayed on thedisplay devices main control panel 320 andslave control panel 330, respectively. These images may also be supplied to thelarger display device 225 on theslave display panel 224. The physician may optimize ventilation parameters to address V/Q mismatch in which lung compartments are either ventilated but not perfused, or perfused but not ventilated. Early intervention, available from EIT images, may prevent cascade of lung injury leading to acute respiratory distress syndrome (ARDS) and sepsis. Use of EIT also has the possibility to reduce the number of CT and X-ray images required, and the intra-hospital transport required for them. - Referring again to
FIG. 5 , the embeddedoperating system 506 is configured to monitor the input/output ports, which may include the serial port, 416, theUSB port 418, theexpansion card port 422, theEthernet ports O ports 410 to detect when a hardware device is newly connected to the system. When newly connected hardware is detected, at least the portion of the software required by thesystem software 500 to interact with this new hardware is retrieved from a mass memory, installed in theRAM 414 and made available to theoperating system 506 and the rest of thesystem software 500. This operation is sometimes called “plug-and-play”. The mass storage device may be local to thecentral unit 300, or may be remotely located (i.e. at a central location in the hospital) in which case it is retrieved via an Ethernet connection. When theSPOC application RAM 414, the newly connectedmodule treatment module central unit 300 and begins functioning. - As described above, a patient monitoring and/or
treatment module central unit 300 in one location and reconnected to acentral unit 300 at a different location (FIG. 3 ,FIG. 4 ). When, a patient monitoring and/ortreatment module central unit 300, theoperating system 506 advantageously detects its presence and identifies theSPOC SPOC module SPOC - A system described above integrates passive patient monitoring modules 210 (
FIG. 3 ) andactive treatment modules central unit 300 and associatedsystem software 500 which receives physiological parameter data and operational status information from and supplies control information to both types of modules. Thesoftware 500 permits modules to be disconnected from, and reconnected to thecentral unit 300. Thesoftware 500 also permits interoperation of two or more of the modules cooperatively. The system reduces human error, improves speed of automatic adaptation of treatment, and of adapting treatment where human intervention is involved. In addition, the system improves the speed and accuracy of generating alerts, which may be crucial in a critical care unit such as an operating room. The system also saves space and cost, combines and groups alarms, provides consolidated documentation, facilitates module transportation and facilitates user operation. It reduces the problems presented to a healthcare worker in having to control multiple independent pieces of equipment. Because the modules may bidirectionally communicate with each other, tasks of supplying monitoring parameters to therapeutic modules, previously done manually, are advantageously accomplished automatically reducing human error. The critical care system may employ rules and programmed instruction governing addition of modules to the system. The integrated critical care system advantageously also provides a consistent user interface in both look and feel for the patient monitoring and therapeutic and life sustaining modules. This facilitates user friendly operation and reduces training required to educate a healthcare worker to operate the system compared to individual modules.TABLE 1 SW Component Functions SW Framework Waveform support Parameters Signal Group Support Alarm Support Event Support Reporting Support Trend Support GUI Components Deployment Support Diagnostics Peripheral Support Help Screen Layout Support Safety and Availability Hospital Network and Interface and Support Critical Care Network Interface and Support Patient Area Network Support Security User/Setups Configuration Support Patient Data/State Support Lifetime Management Database Real-time Infrastructure Communication Mechanisms IT and Third Party App Support Etc CPOC Real-time Waveforms Real-time Measurements Real-time Alarm Behavior, Display and Control Home-screen Alarm Limits Trends Events Alarm History Remote/Bed to Bed View Calculations Strip Recordings Real-time Loops Real-time Flow Meters Demographics Patient Transfer Network Transfer Remote Control Monitor/Patient State Handling SW Option Handling Patient Context User Context Vital View Module/Patient Configuration/Setups Patient Category Full Disclosure Application Selection and Configuration Tools Flight Recorder Wireless Control Remote Keypad Handling Battery Management Measurement Setup and Priority Message Management Print Screen Taskcards Localization Etc Ventilation Management PO1 and Gas Monitoring IntrPEEP SPOC Sigh Suction Nebulize IMV (as example for a breathing mode) Recruitment Lung functions Smart Care NIV Monitor Respiratory System Insp/Exsp Hold NIF RSB RC CO2 Monitoring (including VCO and VDS) Leakage Compensation Nurse Call ILV HF Airway Temperature Flow and airway pressure monitoring Oxygen Localization Etc Monitor SPOC ST Measuring Points OCRG EEG Power Spectra Cardiac Output Wedge Monitor Reports Respiratory Mechanics Surgical Display MIB Management ECG Control Invasive Pressure Control SPO2 Control Respiration Control Body Temperature Control NIBP Control EEG Control Transcutaneous Blood Gas Control End Tidal CO2 Control Arrhythmia Control ECG Lead Management Fractional Inspired O2 Control MultiGas Control Export Protocol Management OR Mode Monitor Setup Nurse Call Auto Dual View Auto Source Switching Localization Etc Anesthesia Gas Mixing Air, oxygen, and N2O control SPOC Carrier gas selection ORC (Xenon) Fresh gas flow Low and minimal flow Monitors gas supply Consumption monitoring incl. Prices Agas control Warm-up Agas monitoring Plug and play of a-gases Inspiratory control Expiratory control MAK monitor Quantitative anesthesia Localization Etc Fluid SPOC TCI TIVA PCA Localization Etc CDPOC's Anesthesia No agas without gas flow Acone Open Lung Tool Electrical Impedance Tomography (EIT) Respiratory Systolic Variation Test (RSVT) NICO Lung Mechanics Calculation (LMC) Automatic Lung Parameter Estimator (ALPE) Advanced Cardiopulmonary Integration Screens BiPAP SMART Alarms SmartCare Localization Etc Other Applications IT ChartAssist Remote View MegaCare BU-IT Localization Etc Imaging 2D 3D Virtual Film Sheet Patient Browser Dicom Query/Retrieve Localization Etc Third Party MagicWeb Cypress Localization Etc.
Claims (29)
1. A modular medical care system housing a plurality of different modules providing different functions used in delivering healthcare to a patient, comprising:
a plurality of different modules including:
(a) a patient monitoring module for acquiring and processing signals derived from sensors suitable for attachment to a patient; and
(b) a patient treatment module for delivering treatment to the patient;
a processor for processing signals derived from said plurality of different modules; and
a communication interface providing bidirectional communication between said processor and said plurality of different modules via a network.
2. A modular medical system housing a plurality of different modules providing different functions used in delivering healthcare to a patient, comprising:
a plurality of different modules including at least two of,
(a) a patient monitoring module for acquiring and processing signals derived from sensors suitable for attachment to a patient,
(b) a module supporting delivery of anesthesia to a patient,
(c) a module supporting ventilation of a patient and
(d) a module supporting infusion pump control;
a processor for processing signals derived from said plurality of different modules; and
a communication interface providing bidirectional communication between said processor and said plurality of different modules via a network.
3. The system of claim 1 including a display generator for initiating generation of data representing at least one composite user interface image including information derived from said plurality of different modules.
4. The system of claim 2 wherein said display generator initiates generation of data representing at least one composite user interface image for display on a first reproduction device and a second different reproduction device.
5. The system of claim 3 wherein said display generator initiates generation of data representing different first and second user interface images for display on said first reproduction device and second different reproduction device respectively.
6. The system of claim 4 wherein said second user interface representative data represents larger image than said the image for said first reproduction device.
7. The system of claim 1 wherein individual modules of said plurality of different modules may be at least one of, (a) plugged into said modular medical system housing and (b) removed from said modular medical system housing, whilst said plurality of different modules are powered on.
8. The system of claim 1 including a display generator for adaptively generating data representing a composite user interface image including information derived from modules of said plurality of different modules plugged into said housing in response to information identifying said plurality of different modules plugged into said housing.
9. The system of claim 7 wherein said display generator adaptively generates data representing a composite user interface image removing information derived from a particular module removed from said housing in response to information identifying said particular module is removed from said housing.
10. The system of claim 1 wherein individual modules of said plurality of different modules may be interchangeably plugged into different docking locations of said housing.
11. The system of claim 1 wherein said processor derives an alert signal for communication to a user based on signals derived from said plurality of different modules.
12. The system of claim 1 wherein said system manages power on and power down of said plurality of different modules based on predetermined rules.
13. The system of claim 1 wherein said system manages re-charging of batteries of said plurality of different modules and initiates generation of data representing an image for display to a user showing battery charging condition of said plurality of different modules.
14. The system of claim 1 wherein said system manages at least one of, (a) re-charging of batteries of said plurality of different modules and initiates generation of data representing an image for display to a user showing battery charging condition of said plurality of different modules, (b) transition from battery power to housing power upon docking of a module with said housing and (c) generation of data representing an image for display to a user showing error conditions of said plurality of different modules.
15. The system of claim 1 including:
a display generator for generating data representing a patient anatomical image and wherein
said communication interface provides substantial real time bidirectional communication between said processor and display generator.
16. The system of claim 1 wherein said communication interface supports communication using wireless technologies including at least one of, (a) WLAN 802.11b standard compatible communication, (b) 802.11a standard compatible communication, (c) 802.11g standard compatible communication, (d) Bluetooth 802.15 standard compatible communication, and (e) GSM/GPRS standard compatible communication.
17. The system of claim 1 wherein said communication interface supports wireless communication between said second module and said processor for processing signals derived from said plurality of different modules enabling at least one of, (a) bidirectional communication with said second module when undocked and remote from said housing and (b) control of said second module by said processor when undocked and remote from said housing.
18. The system of claim 1 wherein said processor manages access to features of one of said plurality of different modules based on predetermined user authorization information.
19. The system of claim 1 wherein said processor prioritizes alert signals associated with corresponding individual modules of said plurality of different modules.
20. The system of claim 1 including a display generator for generating data representing at least one display image presenting alert signals associated with corresponding individual modules of all of said plurality of different modules.
21. The system of claim 1 wherein individual modules of said plurality of different modules are removable from said modular medical system housing in response to user activation of a single mechanical release mechanism disconnecting physical connection of both signals and power passing between an individual module and said modular medical system housing.
22. The system of claim 1 including a display generator for generating data representing at least one display image prompting a user with tasks to be performed using said plurality of different modules in delivering a particular therapy to a patient.
23. The system of claim 1 wherein said plurality of different modules includes one or more of, (a) an incubator, (b) a defibrillator, (c) a warming device, (d) a diagnostic imaging device, (e) a photo-therapy device, (f) a fluid input support device, (g) a fluid output support device, (h) a heart—lung support device, (i) a blood gas monitor, (j) a controllable implanted therapy device, (k) a controllable surgical table and weighing scale.
24. A modular medical system housing a plurality of different modules providing different functions used in delivering healthcare to a patient, comprising:
a plurality of different modules including,
a patient monitoring module for acquiring and processing signals derived from sensors suitable for attachment to a patient and a second module supporting at least one of,
(a) delivery of anesthesia to a patient,
(b) ventilation of a patient and
(c) infusion pump control;
a processor for processing signals derived from said plurality of different modules; and
a communication interface providing bidirectional communication between said processor and said plurality of different modules and with a network.
25. A modular medical system housing a plurality of different modules providing different functions used in delivering healthcare to a patient, comprising:
a plurality of different modules including,
a patient monitoring module for acquiring and processing signals derived from sensors suitable for attachment to a patient and a second module supporting at least one of,
(a) delivery of anesthesia to a patient,
(b) ventilation of a patient and
(c) infusion pump control;
a processor for processing signals derived from said patient monitoring module to configure said second module; and
a communication interface providing bidirectional communication between said processor and said plurality of different modules and with a network.
26. A modular medical system incorporating a plurality of different modules providing different functions used in delivering healthcare to a patient, comprising:
a housing for adaptively accommodating one or more of a plurality of different modules including,
(a) a patient monitoring module for acquiring and processing signals derived from sensors suitable for attachment to a patient,
(b) a module supporting delivery of anesthesia to a patient,
(c) a module supporting ventilation of a patient and
(d) a module supporting infusion pump control;
a processor for processing signals derived from said plurality of different modules; and
a communication interface providing bidirectional communication between said processor and said plurality of different modules and with a network.
27. A transportable breathing support equipment system, comprising:
a device for providing a flow of breathable gas;
a ventilator using said flow of breathable gas to support patient breathing during transportation;
at least one battery for supplying power to said device and said ventilator during transportation; and
a docking port for connecting said breathing support equipment system to a plurality of different modules including at least one of,
(a) a patient monitoring module for acquiring and processing signals derived from sensors suitable for attachment to a patient, and a second module supporting,
(b) a module supporting delivery of anesthesia to a patient, and
(c) a module supporting infusion pump control.
28. The system of claim 26 including
a processor for processing signals derived from said patient monitoring module, and
a communication interface providing bidirectional communication between said processor and said plurality of different modules and with a network.
29. A method for use by a modular medical system housing a plurality of different modules providing different functions used in delivering healthcare to a patient, comprising the activities of:
providing power to a plurality of different modules including at least two of,
(a) a patient monitoring module for acquiring and processing signals derived from sensors suitable for attachment to a patient,
(b) a module supporting delivery of anesthesia to a patient,
(c) a module supporting ventilation of a patient and
(d) a module supporting infusion pump control;
processing signals derived from said plurality of different modules; and
bidirectionally communicating between said processor and said plurality of different modules and with a network.
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Also Published As
Publication number | Publication date |
---|---|
JP2007521849A (en) | 2007-08-09 |
WO2005050524A2 (en) | 2005-06-02 |
WO2005050524A3 (en) | 2005-09-22 |
US20080110460A1 (en) | 2008-05-15 |
EP1697872A2 (en) | 2006-09-06 |
US8312877B2 (en) | 2012-11-20 |
CN1871611A (en) | 2006-11-29 |
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