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. ventilators; Tracheal tubes
  • A61M16/021—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; 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—Measuring 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.

Landscapes

• Health & Medical Sciences (AREA)
• Emergency Medicine (AREA)
• Pulmonology (AREA)
• Engineering & Computer Science (AREA)
• Anesthesiology (AREA)
• Biomedical Technology (AREA)
• Heart & Thoracic Surgery (AREA)
• Hematology (AREA)
• Life Sciences & Earth Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Measuring And Recording Apparatus For Diagnosis (AREA)
• Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
• Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=8549394

Family Applications (1)

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Cited By (5)

Citations (5)

• 1997
  • 1997-08-20 FI FI973424A patent/FI973424L/fi unknown
• 1998
  • 1998-08-19 WO PCT/FI1998/000640 patent/WO1999008589A1/fi not_active Ceased

Patent Citations (5)

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