WO1999008589A1 - Method and system in connection with patient monitoring - Google Patents

Method and system in connection with patient monitoring Download PDF

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Publication number
WO1999008589A1
WO1999008589A1 PCT/FI1998/000640 FI9800640W WO9908589A1 WO 1999008589 A1 WO1999008589 A1 WO 1999008589A1 FI 9800640 W FI9800640 W FI 9800640W WO 9908589 A1 WO9908589 A1 WO 9908589A1
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WO
WIPO (PCT)
Prior art keywords
parameter signal
patient
triggering
graphic representation
action
Prior art date
Application number
PCT/FI1998/000640
Other languages
Finnish (fi)
French (fr)
Inventor
Tom Häggblom
Original Assignee
Instrumentarium Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Instrumentarium Oy filed Critical Instrumentarium Oy
Publication of WO1999008589A1 publication Critical patent/WO1999008589A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/021—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes operated by electrical means
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
    • A61B5/087—Measuring breath flow

Definitions

  • the present invention relates to a procedure as defined in the preamble of claim 1. Moreover, the invention relates to a system as defined in the preamble of claim 7.
  • active medical appliances such as respirators and/or drug administrating devices
  • a physiolo- gical parameter measured from the patient so that an assisting or curative process is automatically triggered into action as soon as the physiological parameter signal has reached a preset limit.
  • the user interface which displays the parameter signal as a graphic representation, comprises some kind of means by which the user may recognise that a process has been triggered. Such means may consist of e.g. sound, light or displayed text.
  • a problem with prior-art methods and systems is that the indication of a triggered action is presented completely separately from the triggering physiological signal, which means that it is difficult for the user to recognise the relation between the physiological signal and the action triggered, i.e. to determine the physiological occurrence that caused the triggering and the effect produced by the action on the physiological signal.
  • the object of the present invention is to eliminate the drawbacks mentioned above.
  • a further object of the invention is to disclose a procedure and a system that make it easier to establish a logical connection between mutually related physiological occurrences and medical actions triggered.
  • the procedure of the invention is characte- rised by what is presented in claim 1.
  • the system of the invention is characterised by what is presented in claim 7.
  • a limit value is set for a parameter signal corresponding to a physiological parameter for a patient.
  • the limit value can be set by the user of the appliance or the applian- ce may change the limit value or set new limit values independently.
  • the limit value may concern an upper limit and/or a lower limit, depending on the parameter to be measured.
  • the parameter signal is then measured from the patient, the measured parameter signal is indicated in the form of a graphic representation, a medical action is triggered when the measured parameter signal has reached a preset limit value or when it is anticipated that the limit value will be reached. After this, the triggering of the action and/or the operativeness of the action is/are indicated.
  • the indication of the triggering and/or operativeness of the action is combined with the graphic representation of the triggering parameter signal and/or a parameter signal logi- cally related to it.
  • the user can clearly recognise the physiological occurrence that caused the triggering as well as the effect of the triggered action on the parameter signal.
  • the triggering could also be indicated in signals that are somehow related to the triggering signal.
  • the triggering and/or operativeness of the action is/are indicated in the graphic representation of the parameter signal as a change of colour, tonal value, line width, li- ne type or the like, as a pointer in the immediate vicinity of the graphic representation and/or as a text in the immediate vicinity of the graphic representation.
  • a display device and a user interface on the display of the display device are provided and the graphic representation of the parameter signal as well as the triggering and/or operativeness are presented in the user interface.
  • the limit value of a limit parameter signal is varied via the user interface.
  • the operation of a respirator assisting the patient's respiration or maintaining it artificially or the administration of a medicament into the patient's respiratory passages is controlled, for which purpose a limit value is set for a parameter signal corresponding to the respiratory duct pressure, flow and/or volume, the respiratory duct pressure, flow and/or volume are measured, the respiratory duct pressure, flow and/or volume are indicated in the form of a graph, respiratory assistance and/or administration of medicine into the patient's respiratory ducts is/are triggered into action after the measured respiratory duct pressure, flow and/or volume has reached the set limit, and the triggering and/or opera- tiveness is indicated in conjunction with the graph representing the respiratory duct pressure, flow and/or volume.
  • the medical action performed by the appliance consists of assisting heart activity
  • the graphic representation of the measured parameter signal is an electrocardiogram
  • the system comprises means for setting a limit value for a parameter signal corresponding to a physiological parameter for a patient; means for measuring the parameter signal from the patient; means for indicating the measured parameter signal in the form of a graphic representation; means for triggering a medical action after the measured parameter signal has reached the set limit or when it is anticipated that the limit will be reached; and means for indicating the triggering and/or operativeness of the medical process.
  • the means for indicating the triggering and/or operativeness of the action are combined with the graphic representation of the triggering parameter signal and/or a parameter sig- nal logically related to it .
  • the system comprises a display device, which is provided with a user interface for the system, said user interface being so designed as to allow said limit value to be set, and which serves to display the graphic representation of the parameter signal and the triggering and/or operativeness of the action.
  • the means for indicating the triggering and/or operativeness of the action consist of changes in colour, tonal value, line width, line type or the like in the graphic representation of the parameter signal, and a pointer and/or a text in its immediate vicinity.
  • the graphic representation is a graph or the like.
  • the appliance is a respirator that assists the patient's respiration and/or maintains it artificially and/or a device for the dosage of medicine into the patient's respiratory ducts.
  • the parameter signal to be measured is a parameter signal corresponding to respiration pressure, flow and/or volume.
  • the appliance is a device that assists heart activity.
  • the graphic representation of the measured parameter signal is an electrocardiogram.
  • Fig. 1 presents a diagram representing an embodiment of the system of the invention
  • Fig. 2 presents a display of a graphic user interface comprised in an embodiment of the system ⁇ of the invention
  • Fig. 3 a second display of the user interface of the system with a control window opened
  • Fig. 4 presents a third display of the user interface of the system with a control window opened
  • Fig. 5 presents a fourth display of the user interface of the system.
  • Fig. 1 is a simplified diagram of a system for use in conjunction with patient monitoring.
  • the medical action performed by the appliance 1 is controlled by means of a physiological parameter measured from the patient.
  • the system comprises means for setting a limit value for a parameter signal corresponding to the physiological parameter for the patient.
  • the system comprises means for measuring a parameter signal from the patient.
  • the system comprises means for indicating a parameter signal in the form of a graphic representation 2.
  • the system comprises means for triggering a medical action after the measured parameter signal has reached the set limit value.
  • the means 3 1 , 3 2 , 3 3 for indicating the triggering are directly incorporated in the graphic representation 2 of the triggering parameter signal or a parameter signal logically related to it.
  • a graphic user interface 5 is provided in the display of a display device 4. The user interface 5 is used to set the limit value and to present the graphic representation 2 and the means for 3 1 , 3 2 , 3 3 indicating the triggering of the action.
  • the means for 3 1 , 3 , 3 indicating the triggering of the curative action or the like carried out by the appliance 1 consist of changes 3 in colour, tonal value, line width, line type or the like in the graphic representation 2 of the parameter signal, a pointer 3 and/or a text 3 3 appearing in its immediate vicinity.
  • Fig. 1 shows all these together, but they can also be used separately or in suitable combinations.
  • the appliance 1 may also consist of a respirator assisting and/or artificially maintaining the pa- tient's respiration, and/or a device for the dosage of medicine into the patient's respiratory ducts.
  • the parameter signal measured from the patient is a parameter signal corresponding to the respiratory duct pressure, flow and/or volume.
  • the appliance 1 may also be a device assisting heart activity.
  • the graphic representation of the measured parameter signal is an electrocardiogram.
  • Fig. 2 presents a graphic user interface 5 in which the topmost curve 2 represents a respiratory duct pressure measured from the patient, showing it as a function of time.
  • the curve p circ 2 for the respiratory duct pressure is presented here for a period of one minute.
  • the action to be controlled is inspiration by respirator, assisting the patient's own inspiration.
  • the triggering of the assisting inspiration is based on the fact that, at the beginning of the patient's own inspiration, the respiration pressure falls below a preset limit.
  • the assisting inspiration is of predetermined duration and volume.
  • the triggering as well as the operativeness and duration of the action are indicated in Fig. 2 by a wider black line 3 on an ascending part of the curve, representing the active inspiration stage when gas is flowing in.
  • the triggering and duration can also be displayed in any other suitable manner that distinguishes this portion from the normal pressure curve.
  • the essential point is that that the indication of triggering is displayed in intermediate conjunction with the graph representing the triggering respiration pressure or other physiological parameter logically related to it and is clearly distinguishable and readily intelligible to the user.
  • Fig. 3 and 4 illustrate the manner in which the respirator operation regarding its triggering into action is adjusted via control windows that can be opened in the user interface.
  • the control window desig- nated as "Trigger window” presents the respiratory duct pressure P[cmH 2 0] as a function of time t[s].
  • the width of the trigger window shown in the figure is adjustable.
  • Fig. 4 illustrates a method for adjusting the triggering sensitivity.
  • the control window 8 designated as "Sensitivity" presents the same graph as in Fig. 3, but in this case the trig- ger window 9 can be adjusted in the vertical direction, in other words, the limit pressure value at which triggering occurs can be adjusted.
  • Fig. 5 shows a "Spirometry" display window, representing flow volume spirometry, which means measu- ring the respiration volume, shown as Vol [m] on the horizontal axis, in relation to the respiration flow, shown as Flow[l/min] on the vertical axis.
  • the action to be triggered is administration of medicine into the respiratory ducts.
  • the extra wide line portion 3 of the curve represents the triggering of dosage of the medicine. It can be seen from the figure that the medicine is administered to the patient when the respiration volume is between 150 - 300 ml.

Abstract

The invention relates to a procedure in conjunction with patient monitoring, in which a medical action performed by an appliance is controlled by means of a physiological parameter measured from the patient. A limit value is set for a parameter signal corresponding to the physiological parameter for the patient. The parameter signal is measured from the patient. The measured parameter signal is indicated in the form of a graphic representation. The medical action is triggered when the measured parameter signal has reached the preset limit value or when it is anticipated that the limit value will be reached. The triggering of the action and/or the operativeness of the action is/are indicated. The indication of the triggering and/or operativeness of the action is combined with the graphic representation of the triggering parameter signal and/or a parameter signal logically related to it.

Description

METHOD AND SYSTEM IN CONNECTION WITH PATIENT MONITORING
The present invention relates to a procedure as defined in the preamble of claim 1. Moreover, the invention relates to a system as defined in the preamble of claim 7.
It is known in prior art that active medical appliances, such as respirators and/or drug administrating devices, can be controlled by means of a physiolo- gical parameter measured from the patient so that an assisting or curative process is automatically triggered into action as soon as the physiological parameter signal has reached a preset limit. Usually, the user interface, which displays the parameter signal as a graphic representation, comprises some kind of means by which the user may recognise that a process has been triggered. Such means may consist of e.g. sound, light or displayed text. A problem with prior-art methods and systems is that the indication of a triggered action is presented completely separately from the triggering physiological signal, which means that it is difficult for the user to recognise the relation between the physiological signal and the action triggered, i.e. to determine the physiological occurrence that caused the triggering and the effect produced by the action on the physiological signal.
The object of the present invention is to eliminate the drawbacks mentioned above.
A further object of the invention is to disclose a procedure and a system that make it easier to establish a logical connection between mutually related physiological occurrences and medical actions triggered.
The procedure of the invention is characte- rised by what is presented in claim 1. The system of the invention is characterised by what is presented in claim 7. In the procedure of the invention, a limit value is set for a parameter signal corresponding to a physiological parameter for a patient. The limit value can be set by the user of the appliance or the applian- ce may change the limit value or set new limit values independently. The limit value may concern an upper limit and/or a lower limit, depending on the parameter to be measured. The parameter signal is then measured from the patient, the measured parameter signal is indicated in the form of a graphic representation, a medical action is triggered when the measured parameter signal has reached a preset limit value or when it is anticipated that the limit value will be reached. After this, the triggering of the action and/or the operativeness of the action is/are indicated.
According to the invention, the indication of the triggering and/or operativeness of the action is combined with the graphic representation of the triggering parameter signal and/or a parameter signal logi- cally related to it. In this way, the user can clearly recognise the physiological occurrence that caused the triggering as well as the effect of the triggered action on the parameter signal. The triggering could also be indicated in signals that are somehow related to the triggering signal.
In an embodiment of the procedure, the triggering and/or operativeness of the action is/are indicated in the graphic representation of the parameter signal as a change of colour, tonal value, line width, li- ne type or the like, as a pointer in the immediate vicinity of the graphic representation and/or as a text in the immediate vicinity of the graphic representation.
In an embodiment of the procedure, a display device and a user interface on the display of the display device are provided and the graphic representation of the parameter signal as well as the triggering and/or operativeness are presented in the user interface.
In an embodiment of the procedure, the limit value of a limit parameter signal is varied via the user interface.
In an embodiment of the procedure, the operation of a respirator assisting the patient's respiration or maintaining it artificially or the administration of a medicament into the patient's respiratory passages is controlled, for which purpose a limit value is set for a parameter signal corresponding to the respiratory duct pressure, flow and/or volume, the respiratory duct pressure, flow and/or volume are measured, the respiratory duct pressure, flow and/or volume are indicated in the form of a graph, respiratory assistance and/or administration of medicine into the patient's respiratory ducts is/are triggered into action after the measured respiratory duct pressure, flow and/or volume has reached the set limit, and the triggering and/or opera- tiveness is indicated in conjunction with the graph representing the respiratory duct pressure, flow and/or volume.
In an embodiment of the procedure, the medical action performed by the appliance consists of assisting heart activity, and the graphic representation of the measured parameter signal is an electrocardiogram.
In the system of the invention, the system comprises means for setting a limit value for a parameter signal corresponding to a physiological parameter for a patient; means for measuring the parameter signal from the patient; means for indicating the measured parameter signal in the form of a graphic representation; means for triggering a medical action after the measured parameter signal has reached the set limit or when it is anticipated that the limit will be reached; and means for indicating the triggering and/or operativeness of the medical process. According to the invention, the means for indicating the triggering and/or operativeness of the action are combined with the graphic representation of the triggering parameter signal and/or a parameter sig- nal logically related to it .
In an embodiment of the system, the system comprises a display device, which is provided with a user interface for the system, said user interface being so designed as to allow said limit value to be set, and which serves to display the graphic representation of the parameter signal and the triggering and/or operativeness of the action.
In an embodiment of the system, the means for indicating the triggering and/or operativeness of the action consist of changes in colour, tonal value, line width, line type or the like in the graphic representation of the parameter signal, and a pointer and/or a text in its immediate vicinity.
In an embodiment of the system, the graphic representation is a graph or the like.
In an embodiment of the system, the appliance is a respirator that assists the patient's respiration and/or maintains it artificially and/or a device for the dosage of medicine into the patient's respiratory ducts. In this case, the parameter signal to be measured is a parameter signal corresponding to respiration pressure, flow and/or volume.
In an embodiment of the system, the appliance is a device that assists heart activity. In this case, the graphic representation of the measured parameter signal is an electrocardiogram.
In the following, the invention will be described in detail by the aid of a few examples of its embodiments by referring to the attached drawings, whe- rein
Fig. 1 presents a diagram representing an embodiment of the system of the invention, Fig. 2 presents a display of a graphic user interface comprised in an embodiment of the system^ of the invention,
Fig. 3 a second display of the user interface of the system with a control window opened,
Fig. 4 presents a third display of the user interface of the system with a control window opened,
Fig. 5 presents a fourth display of the user interface of the system. Fig. 1 is a simplified diagram of a system for use in conjunction with patient monitoring. The medical action performed by the appliance 1 is controlled by means of a physiological parameter measured from the patient. The system comprises means for setting a limit value for a parameter signal corresponding to the physiological parameter for the patient. Moreover, the system comprises means for measuring a parameter signal from the patient. Furthermore, the system comprises means for indicating a parameter signal in the form of a graphic representation 2. In addition, the system comprises means for triggering a medical action after the measured parameter signal has reached the set limit value. The means 31, 32, 33 for indicating the triggering are directly incorporated in the graphic representation 2 of the triggering parameter signal or a parameter signal logically related to it. A graphic user interface 5 is provided in the display of a display device 4. The user interface 5 is used to set the limit value and to present the graphic representation 2 and the means for 31, 32, 33 indicating the triggering of the action.
The means for 31, 3 , 3 indicating the triggering of the curative action or the like carried out by the appliance 1 consist of changes 3 in colour, tonal value, line width, line type or the like in the graphic representation 2 of the parameter signal, a pointer 3 and/or a text 33 appearing in its immediate vicinity. Fig. 1 shows all these together, but they can also be used separately or in suitable combinations.
The appliance 1 may also consist of a respirator assisting and/or artificially maintaining the pa- tient's respiration, and/or a device for the dosage of medicine into the patient's respiratory ducts. In this case, the parameter signal measured from the patient is a parameter signal corresponding to the respiratory duct pressure, flow and/or volume. The appliance 1 may also be a device assisting heart activity. In this case, the graphic representation of the measured parameter signal is an electrocardiogram.
Fig. 2 presents a graphic user interface 5 in which the topmost curve 2 represents a respiratory duct pressure measured from the patient, showing it as a function of time. The curve pcirc 2 for the respiratory duct pressure is presented here for a period of one minute. In this case, the action to be controlled is inspiration by respirator, assisting the patient's own inspiration. The triggering of the assisting inspiration is based on the fact that, at the beginning of the patient's own inspiration, the respiration pressure falls below a preset limit. The assisting inspiration is of predetermined duration and volume. The triggering as well as the operativeness and duration of the action are indicated in Fig. 2 by a wider black line 3 on an ascending part of the curve, representing the active inspiration stage when gas is flowing in. The triggering and duration can also be displayed in any other suitable manner that distinguishes this portion from the normal pressure curve. The essential point is that that the indication of triggering is displayed in intermediate conjunction with the graph representing the triggering respiration pressure or other physiological parameter logically related to it and is clearly distinguishable and readily intelligible to the user. Fig. 3 and 4 illustrate the manner in which the respirator operation regarding its triggering into action is adjusted via control windows that can be opened in the user interface. The control window desig- nated as "Trigger window" presents the respiratory duct pressure P[cmH20] as a function of time t[s]. The width of the trigger window shown in the figure is adjustable. If the patient's respiratory duct pressure p during respiration falls to a value within the trigger window, this will trigger the respirator into action to assist the patient's respiration. Fig. 4 illustrates a method for adjusting the triggering sensitivity. The control window 8 designated as "Sensitivity" presents the same graph as in Fig. 3, but in this case the trig- ger window 9 can be adjusted in the vertical direction, in other words, the limit pressure value at which triggering occurs can be adjusted.
Fig. 5 shows a "Spirometry" display window, representing flow volume spirometry, which means measu- ring the respiration volume, shown as Vol [m] on the horizontal axis, in relation to the respiration flow, shown as Flow[l/min] on the vertical axis. The action to be triggered is administration of medicine into the respiratory ducts. The extra wide line portion 3 of the curve represents the triggering of dosage of the medicine. It can be seen from the figure that the medicine is administered to the patient when the respiration volume is between 150 - 300 ml.
The invention is not restricted to the examples of its embodiments described above, but many variations are possible within the scope of the inventive idea defined by the claims.

Claims

1. Procedure in conjunction with patient monitoring, e.g. for use in anaesthesia and/or intensive care, in which a medical action performed by an appli- ance is controlled by means of a physiological parameter measured from the patient, and in which procedure a limit value is set for a parameter signal corresponding to the physiological parameter for the patient, the parameter signal is measured from the patient, the measured parameter signal is indicated in the form of a graphic representation, the medical action is triggered when the mea- sured parameter signal has reached the preset limit value or when it is anticipated that the limit value will be reached, and the triggering of the action and/or the operativeness of the action is/are indicated, characterised in that the indication of the triggering and/or operativeness of the action is combined with the graphic representation of the triggering parameter signal and/or a parameter signal logically related to it.
2. Procedure as defined in claim 1, characteri sed in that the triggering and/or operativeness of the action is/are indicated in the graphic representation of the parameter signal as a change of colour, tonal value, line width, line type or the like, as a pointer in the immediate vicinity of the graphic representation and/or as a text in the immediate vicinity of the graphic representation.
3. Procedure as defined in claim 1 or 2, c h a r a c t e r i s e d in that a display device and a user interface on the display of the display device are provided and the graphic representation of the parame- ter signal as well as the triggering and/or its operativeness are presented in the user interface.
4. Procedure as defined in claim 3, characteri sed in that the limit value of a limit parameter signal is varied via the user interface.
5. Procedure as defined in any one of claims 1 - 4, characteri sed in that the operation of a respirator assisting the patient's respiration and/or maintaining it artificially and/or the administration of medicine into the patient's respiratory ducts is/are controlled, for which purpose a limit value is set for a parameter signal corresponding to the respiratory duct pressure, flow and/or volume; the respiratory duct pressure, flow and/or volume are measured; the respira- tory duct pressure, flow and/or volume are indicated in the form of a graph; respiratory assistance and/or administration of medicine into the patient's respiratory ducts is/are triggered into action after the measured respiratory duct pressure, flow and/or volume has reached the set limit, and the triggering and/or operativeness is/are indicated in conjunction with the graph representing the respiratory duct pressure, flow and/or volume .
6. Procedure as defined in any one of claims 1 - 5, characteri sed in that the medical action performed by the appliance consists of assisting heart activity, and the graphic representation of the measured parameter signal is an electrocardiogram.
7. System in conjunction with patient monito- ring, e.g. for use in anaesthesia and/or intensive care, in which a medical action performed by an appliance (1) is controlled by means of a physiological parameter measured from the patient, and which system comprises
- means for setting a limit value for a para- meter signal corresponding to the physiological parameter for the patient, means for measuring the parameter signal from the patient,
- means for indicating the measured parameter signal in the form of a graphic representation (2) , - means for triggering a medical action after the measured parameter signal has reached the set limit or when it is anticipated that the limit will be reached, and
- means (31, 32, 33) for indicating the trigger- ing and/or operativeness of the medical action. charact eri sed in that the means (31, 32, 33) for indicating the triggering and/or operativeness of the action are combined with the graphic representation of the triggering parameter signal and/or a parameter signal logically related to it .
8. System as defined in claim 7, charac t e ri s ed in that the system comprises a display device (4) , which is provided with a software based graphic user interface (5) to permit setting of the limit value and display of the graphic representation of the parameter signal and/or the means (31, 32, 33) for indicating the triggering and/or operativeness of the action.
9. System as defined in claim 7 or 8, c h a r a c t e r i z e d in that the means (31, 32, 33) for indicating the triggering and/or operativeness of the action consist of changes in colour, tonal value, line width, line type or the like (31) in the graphic representation (2) of the parameter signal, a pointer (32) and/or a text (33) in its immediate vicinity.
10. System as defined in any one of claims 7 - 9, charac t eri sed in that the graphic representation (2) is a graph or the like.
11. System as defined in any one of claims 7 - 10, charac t eri sed in that the appliance (1) is a respirator that assists the patient's respiration and/or maintains it artificially and/or a device for the dosage of a medicament into the patient's respiratory ducts; and that the parameter signal to be measured is a parameter signal corresponding to respiration pressure, flow and/or volume.
12. System as defined in any one of claims 7 - 10, c h a r a c t e r i z e d in that the appliance (1) is a device assisting heart activity; and that the graphic representation of the measured parameter signal is an electrocardiogram.
PCT/FI1998/000640 1997-08-20 1998-08-19 Method and system in connection with patient monitoring WO1999008589A1 (en)

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FI973424A FI973424A (en) 1997-08-20 1997-08-20 Procedures and systems in connection with patient control
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Cited By (5)

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WO2003092489A1 (en) * 1999-05-28 2003-11-13 E-Monitors, Inc. Systems and methods of ph tissue monitoring
EP1586344A3 (en) * 1999-06-30 2006-07-05 University of Florida Research Foundation, Inc. Ventilator monitor system
US9538949B2 (en) 2010-09-28 2017-01-10 Masimo Corporation Depth of consciousness monitor including oximeter
US9775545B2 (en) 2010-09-28 2017-10-03 Masimo Corporation Magnetic electrical connector for patient monitors
US10154815B2 (en) 2014-10-07 2018-12-18 Masimo Corporation Modular physiological sensors

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WO1991003979A1 (en) * 1989-09-20 1991-04-04 Dwayne Westenskow Device and method for neural network breathing alarm
US5140519A (en) * 1988-05-19 1992-08-18 Dragerwerk Aktiengesellschaft Method for monitoring patient data and circuit arrangement therefor
US5464012A (en) * 1993-09-13 1995-11-07 Hewlett-Packard Company Patient alarm detection using target mode
WO1998017171A1 (en) * 1996-10-21 1998-04-30 Albert Einstein Healthcare Network Apparatus and method for monitoring a system and displaying the status of the system

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US5140519A (en) * 1988-05-19 1992-08-18 Dragerwerk Aktiengesellschaft Method for monitoring patient data and circuit arrangement therefor
US5002060A (en) * 1988-06-16 1991-03-26 Dror Nedivi Medical monitoring system
WO1991003979A1 (en) * 1989-09-20 1991-04-04 Dwayne Westenskow Device and method for neural network breathing alarm
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003092489A1 (en) * 1999-05-28 2003-11-13 E-Monitors, Inc. Systems and methods of ph tissue monitoring
EP1586344A3 (en) * 1999-06-30 2006-07-05 University of Florida Research Foundation, Inc. Ventilator monitor system
US9538949B2 (en) 2010-09-28 2017-01-10 Masimo Corporation Depth of consciousness monitor including oximeter
US9775545B2 (en) 2010-09-28 2017-10-03 Masimo Corporation Magnetic electrical connector for patient monitors
US10531811B2 (en) 2010-09-28 2020-01-14 Masimo Corporation Depth of consciousness monitor including oximeter
US11717210B2 (en) 2010-09-28 2023-08-08 Masimo Corporation Depth of consciousness monitor including oximeter
US10154815B2 (en) 2014-10-07 2018-12-18 Masimo Corporation Modular physiological sensors
US10765367B2 (en) 2014-10-07 2020-09-08 Masimo Corporation Modular physiological sensors
US11717218B2 (en) 2014-10-07 2023-08-08 Masimo Corporation Modular physiological sensor

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FI973424A (en) 1999-02-21

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