(19) United States
`(12) Patent Application Publication (10) Pub. No.: US 2008/0194932 A1
`(43) Pub. Date: Aug. 14, 2008
`
`Ayers et al.
`
`US 20080194932A1
`
`(54) SMALL ANIMAL PULSE OXIMETER USER
`INTERFACE
`
`75
`
`Inventors:
`
`y
`q PP
`a, PA US ;
`Eric J.A ers, Alli ui
`Bernard F. Hete, Kittanning, PA
`(US); Eric W. Starr, Alliston Park,
`PA (US)
`
`Correspondence Address:
`BLYNN L. SHIDELER
`THE BLK LAW GROUP
`3500 BROKKTREE ROAD, SUITE 200
`WEXFORD, PA 15090
`
`(73) Assignee:
`
`STARR LIFE SCIENCES CORP.,
`Oakmont, PA (US)
`
`(21) Appl. No.:
`
`11/972,595
`
`(22)
`
`Filed:
`
`Jan. 10, 2008
`
`Related US. Application Data
`
`(63) Continuation-in-part of application No. 11/858,877,
`filed on Sep. 20, 2007, Continuation-in-part of appli-
`cation No. 11/951,194, filed on Dec. 5, 2007.
`
`(60) Provisional application No. 60/884,392, filed on Jan.
`10, 2007, provisional application No. 60/826,530,
`filed on Sep. 21, 2006, provisional application No.
`60/868,681, filed on Dec. 5, 2006, provisional appli-
`cation No. 60/884,392, filed on Jan. 10, 2007.
`
`Publication Classification
`
`(51)
`
`Int. Cl.
`A6IB 5/1455
`
`(2006.01)
`
`(52) U.S.Cl. ........................................................ 600/324
`
`(57)
`
`ABSTRACT
`
`A user interface for a pulse oximetry device that calculates
`physiologic parameters of a subject including at least a sub-
`ject’s heart rate and SPOZ, is disclosed wherein the interface
`comprises a graphical display of at least one raw data signal of
`the pulse oximetry device that maintains heart and breath rate
`components and a display of the calculated heart rate and
`SPO2 of the subject. The interface may further include a user
`selectable data averaging function in which the interface is
`configured to selectively obtain and display averages of at
`least some of the calculated physiologic parameters over a
`defined period.
`
`12
`
`110
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`14
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`14
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`Patent Application Publication
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`Aug. 14, 2008 Sheet 1 0f 5
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`US 2008/0194932 A1
`
`Aug. 14, 2008
`
`SMALL ANIMAL PULSE OXIMETER USER
`INTERFACE
`
`RELATED APPLICATIONS
`
`[0001] This application claims the benefit of US. Provi-
`sional patent application Ser. No. 60/884,392 filed Jan. 10,
`2007 entitled “Small Animal Pulse Oximeter User Interface.”
`
`[0002] This application is a continuation in part of US.
`patent application Ser. No. 11/858,877 filed Sep. 20, 2007
`entitled “Medical Display Devices for Deriving Cardiac and
`Breathing Parameters Derived from Extra-thoracic Blood
`Flow Measurements.” application Ser. No. 1 1/858,877 claims
`the benefit of provisional patent application Ser. No. 60/826,
`530 entitled “Medical Devices and Techniques for Deriving
`Cardiac and Breathing Parameters from Extra-thoracic Blood
`Flow Measurements and for Controlling Anesthesia Levels
`and Ventilation Levels in Subjects” filed Sep. 21, 2006.
`[0003] This application is a continuation in part of US.
`patent application Ser. No. 11/951,194 filed Dec. 5, 2007
`entitled “Research Data Classification and Quality Control
`for Data from Non-Invasive Physiologic Sensors.” applica-
`tion Ser. No. 11/951,194 claims the benefit of US. Provi-
`sional patent application Ser. No. 60/868,681 filed Dec. 5,
`2006 entitled “Research Data Quality Control Software.”
`application Ser. No. 11/951,194 claims the benefit of US.
`Provisional patent application Ser. No. 60/884,392 filed Jan.
`10, 2007 entitled “Small Animal Pulse Oximeter User Inter-
`face.”
`
`BACKGROUND OF THE INVENTION
`
`1. Field of the Invention
`[0004]
`[0005] The present invention relates to user interface for
`physiologic parameter sensors and more particularly to small
`animal pulse oximeter user interfaces.
`[0006]
`2. Background Information
`[0007] The present invention is related to the user interface
`provided in physiologic sensor devices, particularly those for
`use with non-invasive physiologic sensors, such as pulse
`oximeters, and in particular those used on small subjects in a
`research environment.
`
`[0008] As background, one type of non-invasive physi-
`ologic sensor is a pulse monitor, also called a photoplethys-
`mograph, which typically incorporates an incandescent lamp
`or light emitting diode (LED) to trans-illuminate an area of
`the subject, e.g. an appendage, which contains a sufficient
`amount of blood. The light from the light source disperses
`throughout the appendage {which is broken down into non-
`arterial blood components, non-pulsatile arterial blood, and
`pulsatile blood}. A light detector, such as a photodiode, is
`placed on the opposite side of the appendage to record the
`received light. Due to the absorption of light by the append-
`age’s tissues and blood, the intensity of light received by the
`photodiode is less than the intensity of light transmitted by the
`light source (e.g., LED). Of the light that is received, only a
`small portion (that effected by pulsatile arterial blood), usu-
`ally only about two percent ofthe light received, behaves in a
`pulsatile fashion. The beating heart of the subject, and the
`breathing of the subject as discussed below, create this pul-
`satile behavior. The “pulsatile portion light” is the signal of
`interest, and effectively forms the photoplethysmograph. The
`absorption described above can be conceptualized as AC and
`DC components. The arterial vessels change in size with the
`beating of the heart and the breathing of the patient. The
`
`change in arterial vessel size causes the path length of light to
`change from dmm to dmax. This change in path length produces
`the AC signal on the photo-detector, which spans the intensity
`range, IL to IH. The AC Signal is, therefore, also known as the
`photoplethysmograph.
`[0009] The absorption of certain wavelengths of light is
`also related to oxygen saturation levels of the hemoglobin in
`the blood transfusing the illuminated tissue. In a similar man-
`ner to the pulse monitoring, the variation in the light absorp-
`tion caused by the change in oxygen saturation of the blood
`allows for the sensors to provide a direct measurement of
`arterial oxygen saturation, and when used in this context, the
`devices are known as oximeters. The use of such sensors for
`
`both pulse monitoring and oxygenation monitoring is known,
`and in such typical uses, the devices are often referred to as
`pulse oximeters. These devices are well known for use in
`humans and large mammals and are described in US. Pat.
`Nos. 4,621,643; 4,700,708 and 4,830,014, which are incor-
`porated herein by reference.
`[0010] Current commercial pulse oximeters do not have the
`capability to measure breath rate or other breathing-related
`parameters other than blood oxygenation. An indirect (i.e. not
`positioned within the airway or air-stream of the subject),
`non-invasive method for measuring breath rate is with imped-
`ance belts. Further, prior to the implementation of the Mou-
`seOXTM brand pulse oximeter, introduced in mid-December
`2005, there were no commercial pulse oximeters that were
`effective for small mammals such as mice and rats.
`
`[0011] These existing physiologic sensor devices, particu-
`larly those for use with small subjects in a research environ-
`ment, need a user interface to display results to the user and to
`further allow the user to effectively utilize the sensor devices.
`In general, many existing sensor device merely have a display
`to display current readings to the user, and the only functional
`system controls are the on/off controls. This limited user
`interface restricts the uses for the sensor device, particularly
`in a research environment.
`
`It is an object of the present invention to minimize
`[0012]
`the drawbacks of the existing technology and to provide a
`simple easy to use small animal physiologic sensor user inter-
`face.
`
`SUMMARY OF THE INVENTION
`
`[0013] The present invention is directed toward the user
`interface for a physiologic parameter sensor that calculates
`physiologic parameters of a subject, such as a pulse oximeter.
`The details of the pulse oximeter, per se, and other physi-
`ologic parameter sensors (blood pressure monitors, eeg, ekg
`etc) are known in the art and not discussed herein in detail.
`The present invention is directed to the interface that allows
`the user, particularly a researcher, to more efficiently and
`effectively implement these sensor tools.
`[0014] One non-limiting embodiment of the present inven-
`tion provides a user interface for a pulse oximetry device that
`calculates physiologic parameters of a subject including at
`least a subject’s heart rate and SPOZ, wherein the interface
`comprises a graphical display of at least one raw data signal of
`the pulse oximetry device that maintains heart and breath rate
`components and a display of the calculated heart rate and
`SPO2 ofthe subject. The phrase “raw data signal” with regards
`to pulse oximetry devices will mean, within this application,
`a signal that maintains the heart and breath components ofthe
`signal together. The “raw” signal will typically undergo some
`signal processing (also called pre-processing such as analog
`
`7
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`

`US 2008/0194932 A1
`
`Aug. 14, 2008
`
`filters and gains), but such processing is minimal and this
`signal is therefore considered raw within this application.
`This raw signal exhibits a much faster real time response than
`do the processed breath and heart rate signals.
`[0015] The pulse oximeter user interface of the present
`invention may further include a graphical display of a plural-
`ity of the calculated physiologic parameters over time, and a
`numerical display of a plurality of the calculated physiologic
`parameters at selected times, such as at the most recent cal-
`culation and/or at a user designated time.
`[0016] The pulse oximeter user interface of the present
`invention further includes a recording ofthe calculated physi-
`ologic parameters and an event file marker function which is
`configured to be user selected to physically identify selected
`time locations of the record. The file marker function may
`physically identify the selected times on an associated graphi-
`cal display of the calculated physiologic parameters and may
`further mark a location of a recorded session.
`
`[0017] One non-limiting embodiment of the present inven-
`tion provides a user interface for a physiologic parameter
`sensor that calculates physiologic parameters of a subject,
`wherein the interface comprises a user selectable data aver-
`aging function in which the interface is configured to selec-
`tively obtain and display averages of at least some of the
`calculated physiologic parameters over a defined period.
`[0018] The physiologic parameter sensor user interface of
`the present invention may provide that the data averaging
`further includes a user selection ofthe defined average period.
`The data averaging may be configured to ignore calculated
`physiologic values that are deemed unacceptable in the cal-
`culation of the averages. The data averaging may be config-
`ured to display intermediate average values during calcula-
`tion and to display final average values to the user in a distinct
`manner from the display of the intermediate average values.
`The interface may be configured to selectively begin the
`defined period at any time designated by the use. The inter-
`face may be configured to operate on recorded or real time
`data.
`
`[0019] These and other advantages of the present invention
`will be clarified in the description of the preferred embodi-
`ments taken together with the attached figures in which like
`reference numerals represent like elements throughout.
`
`BRIEF DESCRIPTION OF THE FIGURES
`
`FIG. 1 is a representative illustration of a summary
`[0020]
`data screen for a pulse oximeter user interface according to
`one embodiment of the present invention;
`[0021]
`FIG. 2 is a representative illustration of a more
`detailed summary data screen for the pulse oximeter user
`interface of FIG. 1;
`[0022]
`FIG. 3 is another representative illustration of the
`summary data screen of FIG. 2;
`[0023]
`FIG. 4 is a representative illustration of a main data
`collection screen for the pulse oximeter user interface of FIG.
`1;
`FIG. 5 is another representative illustration of the
`[0024]
`main data collection screen of FIG. 4; and
`[0025]
`FIG. 6 is another representative illustration of user
`selectable data averaging diagnostic screen for the pulse
`oximeter user interface of FIG. 1.
`
`DESCRIPTION OF THE PREFERRED
`EMBODIMENTS
`
`[0026] The present invention is directed to the user inter-
`face of a physiologic sensor device, such as a pulse oximeter
`device, particularly a physiologic sensor device for small
`mammals, such as found in many research applications. In
`such devices the output, generally including a display of the
`sensed parameter as determined by the sensor device, is dis-
`played to the user in some format on an associated display
`device. The details of the physiologic sensor device are
`known in the art and are not included herein. The present
`invention has been implemented as a user interface on the
`MouseOXTM brand pulse oximeter for small animals, such as
`rats and mice. The invention can be implemented on other
`brands ofpulse oximeters and other physiologic sensors. The
`advantages of the present invention are most notable in a
`research environment, but the invention is not limited thereto.
`Similarly, much research is done on animals, and the largest
`majority of animal research is performed with mice and rats.
`The present invention is clearly well suited for such animal
`research applications, but it is not limited to use with animal
`related sensors.
`
`Pulse Pleth Window
`[0027]
`[0028] The first aspect of the present invention is shown on
`a summary screen 10 of the interface of the present invention
`shown in FIG. 1. The summary screen includes a window 12
`referenced as the Pulse Pleth window 12. The window 12
`
`the
`appears on the pulse oximeter summary screen 10,
`detailed summary screen 40 (described below) and the main
`data collection screen 50 (described below) in the Mouse
`OXTM device sold by Starr Life Sciences, and provides a near
`real-time graphical display ofthe transmitted red and infrared
`pulse oximeter light intensities 14 as received by the receiver,
`to the user. In the manifestation as shown in the figure, the
`display 12 appears as dual oscilloscope traces 14. A red trace
`14 represents the red transmitted light intensity, while a yel-
`low trace 14 represents the infrared transmitted light inten-
`sity. The transmitted light data that form these traces 14 are
`received in packets from the A/D card buffer and are trans-
`mitted across the USB cable to the computer. Once in the
`computer, they are processed in various ways and sent to the
`Pulse Pleth window 12 for graphical display. The Pulse Pleth
`window 12 as it appears in the MouseOXTM Summary screen
`10 is what is shown in FIG. 1.
`
`[0029] One important utility of this graphical representa-
`tion in window 12 of what is effectively raw data is that it
`allows the user to see the waveforms 14 so that their quality
`can be judged. Since the quality of the waveforms 14 deter-
`mines the ability of the pulse oximeter to make continuous
`accurate measurements of its parameters, displaying the “raw
`signal” traces 14 to the user can allow him to be able to
`move/adjust the sensor location in order to improve signal
`quality. The raw data traces 14 are sufficient feedback for the
`user to perceive weaker and stronger signals based upon
`sensor location (within what ever adjustment is provided in a
`particular sensor mount).
`[0030] Note that the particular color of the traces 14 is
`inconsequential, and that the data does not have to be delayed
`or processed in order to provide beneficial information to the
`user. Additionally, the processing could be conducted in the
`same device that has the A/D board and/or the display screen.
`[0031]
`Summary Screen
`[0032] The remaining elements of the summary screen 10
`should be discussed for a fuller understanding ofthe interface
`
`8
`
`

`

`US 2008/0194932 A1
`
`Aug. 14, 2008
`
`of the present invention. The summary screen 10 includes a
`numerical display ofthe physiologic parameters measured by
`the MouseOXTM pulse oximeter. These include a numerical
`display of the latest pulse distension measurement 20 with
`associated heading; a numerical display of the latest breath
`distension measurement 22 with associated heading; a
`numerical display of the latest heart rate measurement 24
`with associated heading; a numerical display of the latest
`
`SPO2 (oxygen saturation) measurement 26 with associated
`heading; and a numerical display of the latest breath rate
`measurement 28 with associated heading.
`[0033] The summary screen 10 further includes a control
`button 30 that will mark the data file as will be described in
`
`further detail below as it is an important aspect ofthe interface
`of the present invention. The summary screen 10 includes a
`file marker number 32 to indicate to the user which file marker
`has been set.
`
`[0034] The summary screen 10 further includes a status
`indicator 34 to identify if the system is recording, or playing
`back a recorded session or idle. Other status indicators can be
`
`added as desired. The summary screen 10 can include a vari-
`ety of other control buttons 36 to perform other designated
`tasks such as pulling up windows, closing windows, and other
`interface that is necessary to better implement the oximeter.
`[0035]
`Parameter Color Change
`[0036] An improvement in data error indication involves
`letting the user know about problems with the data while the
`data is being collected. Although the quality of data can be
`assessed in a general sense using the Pulse Pleth window 12
`described above, data signals from the Pulse Pleth window 12
`that are judged to be of sufficient quality, may still result in the
`inability for the software algorithms to successfully calculate
`one or more parameters at a given instant of time. An addi-
`tional aid to the user has been provided by changing the color
`of a given parameter in the data text boxes 20-28 each time
`calculation of the associated parameter in the given text box
`20-28 does not pass the acceptance criterion for that param-
`eter. An error flag may be thrown in a log file such cases that
`allow the user to flag data that is questionable at a later review.
`Additionally here an indication of a problem 16 is given on
`the window 12 and possibly on the main user screen while
`data are being collected. This feedback may be done in two
`ways. The first is that the background ofthe Pulse Pleth screen
`or window 12 changes color from black to green (and note
`that the color choices are arbitrary) while an error flag is
`active. Secondly, the numerical values displayed in the data
`text boxes 20-28 change color, including a color that matches
`the background of the text box such that the number is not
`seen, when a given parameter does not pass the acceptance
`criterion for that parameter. This display utility could be
`further improved by changing the background color on a
`given data display plot associated with a given error flag at a
`given time.
`[0037]
`Shown in FIG. 2 a pictorial representation of the
`detailed summary display 40 of the user interface in normal
`operation, and FIG. 3 is a representation of the display 40 of
`the user interface in operation while an error flag 1 6 is present.
`Obviously, these are not the same data sets, but serve to
`illustrate the two different cases. Note that not only the color
`change in the Pulse Pleth window 12, but also the “graying
`out” of the Chart Data 22, 26 and 28 (also a color change) for
`the affected parameters only. Other parameters 20 and 24 are
`still considered to be valid.
`
`[0038] The detailed summary display or window 40
`includes the parameter displays 20-28 for the most current
`data sets under the chart data heading 44. Further the sum-
`mary window 4 includes a display of the parameters 20-28 at
`a user selected location, such as at a file marker, under the
`heading curser data 46. In light of the two sets of data values
`20-28 that may be displayed in window 40, a time indicator 42
`is included above each column to convey the associated event
`time that each column is reflecting.
`[0039] Quick Diagnostic Measurement: Graphical Display
`of Parameters Over Time
`
`[0040] The following concepts deal with improving the
`ability of a device user to monitor the status of the animal, as
`well as the progress of a given experiment. The first item is the
`continuous graphical display of each ofthe parameters on the
`main data collection screen 50, as well as the off-line data
`review screen (not shown, but is substantially the same as 50
`with playback controls 36). These graphically displayed
`parameters include heart rate 56, breath rate 60, SPO2 58,
`pulse distention 52 and breath distention 54. Graphs could
`also be added to include any parameters that may be devel-
`oped in the future. The graphs 52-60 consist of continuous
`streaming plots of each parameter. The graphs are displayed
`on a data point basis, which can be considered a time based
`display, however technically the displays would be display a
`range ofdata points with the data points evenly distributed. As
`the range of data points corresponds to a range of time it is
`essentially a time based display. Because of the time-based
`display of these graphs 52-60, they also allow the user to
`watch the response to a given input in an experiment. These
`graphical displays can be seen on the left-hand side of the
`display 50 of FIGS. 4 and 5. In the particular embodiment the
`sensor is a pulse oximeter such as sold under the brand Mouse
`Ox by Starr Life Sciences.
`[0041] The main data collection screen or display 50 of the
`interface ofthe present invention further includes the window
`12, and numerical displays 20-28 for the current data (chart
`data 44) and at a user selected location (curser data 46), and
`file marking control 30, and numerical file marker indicator
`32, and a series of additional controls 64 for interfacing with
`the display 50. The controls 64 include buttons to stop/start
`and pause the recording session and to bring up other dis-
`plays, to close a display, and increase/decrease the visible
`gain on a selected graph. Other controls 64 can be added as
`interface further functions are desired.
`
`File Marker
`[0042]
`[0043] Associated with this benefit is the ability of the user
`to place a number of file markers in the recorded data file
`through control 30 to indicate some event in the experiment.
`A button 30 appears on the screens 10 and 50 that allows the
`user to place a marker in the data file to signify an event of his
`choosing. The file markers are placed in a separate column of
`data in the data file and are numbered sequentially starting at
`l, which number is displayed to the user at text box 32.
`Because the data files are saved in continuous time incre-
`ments, the file marker will be located in the file at the same
`temporal location that the event of interest occurred, and can
`therefore be correlated with the response to that event of the
`other parameters in their respective columns. Note that a
`place holder is required for each temporal location in the data
`file. The file marker column continues to record the current
`
`value of the file marker until a new one is chosen by the user.
`Buttons 3 0 for the file marker function are shown on the right,
`bottom of the screen or display 50 shown in FIGS. 4 and 5
`
`9
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`

`US 2008/0194932 A1
`
`Aug. 14, 2008
`
`discussed above. Also, on the graph 58 of Oxygen Saturation
`appear vertical blue lines 62 that indicate the temporal loca-
`tion of file marker’s 1 and 2. The file marker location lines 62
`
`can be supplied on each graph 52, 54, 56, 58 and 60.
`[0044] Note that there are other ways to mark the data files
`other than a number. One could save a given type character
`that does not have to be a number, or a sequential integral
`number at that location, then keep all zeroes (or other char-
`acter) at all other locations in the file marker column. File
`marking could also be done by having the user strike a key on
`the computer keyboard rather than or in addition to having a
`mouse click on a button on the user screen. This could also be
`done with a touch screen. In addition, it will be beneficial if
`textual comments can be added to each file marker either
`
`contemporaneously with the session or with a later review of
`the session.
`
`[0045] Moving File Marker
`[0046] As described above, an indicator 62 is placed on the
`graphs 52-60 described above to allow the user to see the time
`at which a given event was marked. This file marker indicator
`62 appears as a vertical line on the screen as shown and as
`described, and it follows the time point on the graph 52-60 at
`which it was implemented until that time point leaves the
`sweeping visible screen in the future. Movement of the file
`markers is indicated by comparing the location of the vertical
`blue lines on the Oxygen Saturation plot between the figures
`above andbelow. The FIG. 5 shows the same run ofdata as the
`
`FIG. 4, except that it occurs some time later, as indicated by
`the movement of the vertical blue file marker lines 62 to the
`
`left (the screen scrolls from right to left). The curser data 44
`time indication 42 is also indicative of a later time for the
`
`display 50 of FIG. 5.
`[0047] Variable Display for Quick Diagnosis
`[0048] A third idea is to display numerical values 20-28 of
`each parameter continuously during data collection, as
`described above for screens 10, 40 and 50. This utility allows
`the user to continuously see the actual numerical values asso-
`ciated with each scrolling graph. Additionally, the user can
`lay the computer mouse cursor over the plot at a given tem-
`poral location and left-click (or right click or the like). This
`will place all of the currently updated parameter values in
`boxes under the curser data heading 46 on display 50 adjacent
`to those that display the updating values for each parameter. A
`right click on the screen will load the current values into these
`adjacent boxes so that they do not update. This allows the user
`to take snapshots for review of all of the data parameters at a
`given time, allowing the device to be used as a diagnostic tool
`as well as a data recorder. This functionality is also available
`in the off-line data file review software.
`
`[0049] Quick Diagnostic Screen
`[0050] Another concept of the present invention is an addi-
`tion to the diagnostic utility of the pulse oximeter device (see
`FIG. 6), is a new user screen 70 that can be selected by a
`control button 64 on the data collection screen 50. This button
`
`64 will pull up a new screen 70 shown in FIG. 6 that displays
`numerical values 20', 22', 24', 26' and 28' of each of the data
`parameters. This screen 70 is designed specifically to allow
`the user to obtain single value data points which are averages
`of the data for quick diagnosis. The additional utility of this
`screen 70 is that it provides the user with the ability to select
`a period over which serial data points are averaged for each
`parameter through controller 72. The user can then indicate
`when to start the count with control 74, and the software will
`average the selected serial data values over the chosen period
`
`set by controller 72 and display the final values when the
`average is completed in 20'-28'. The prime reference numer-
`als are used as the values are averages of the selected param-
`eter measurements rather than the measurements themselves.
`
`This averaging is done for each of the parameter (heart rate
`24', breath rate 28', SPO2 26', pulse distention 20', breath
`distention 22' and any other obtained parameter). Note that
`the averaging period could also be set using particular quan-
`tities of updated values as well as the time-based approach
`given here. Note also that the averaging could be done either
`forward or backward in time from when the Run New Diag-
`nostic button 74 is pressed.
`[0051] Although the present invention has been described
`with particularity herein, the scope of the present invention is
`not limited to the specific embodiment disclosed. It will be
`apparent to those of ordinary skill in the art that various
`modifications may be made to the present invention without
`departing from the spirit and scope thereof. The scope of the
`present invention is defined in the appended claims and
`equivalents thereto.
`
`What is claimed is:
`
`1. A user interface for a pulse oximetry device that calcu-
`lates physiologic parameters of a subject including at least a
`subject’s heart rate and SPOZ, the interface comprising a
`graphical display of at least one raw data signal of the pulse
`oximetry device that maintains heart and breath rate compo-
`nents and a display ofthe calculated heart rate and SPO2 ofthe
`subject.
`2. The pulse oximeter user interface of claim 1 further
`including a graphical display of a plurality of the calculated
`physiologic parameters over time.
`3. The pulse oximeter user interface of claim 1 further
`including a recording of the calculated physiologic param-
`eters and an event file marker function which is configured to
`be user selected to physically identify selected time locations
`of the record.
`
`4. The pulse oximeter user interface of claim 1 further
`including a graphical display of a plurality of the calculated
`physiologic parameters over time, a numerical display of
`selected calculated physiologic parameters and an event file
`marker function which is configured to be user selected to
`physically identify selected time locations on the graphical
`display.
`5. The pulse oximeter user interface of claim 1 further
`including a user selectable data averaging function in which
`the interface is configured to selectively obtain and display
`averages of at least some ofthe calculated physiologic param-
`eters over a defined period.
`6. The pulse oximeter user interface of claim 5 wherein the
`data averaging further includes a user selection ofthe defined
`average period.
`7. The pulse oximeter user interface of claim 5 wherein the
`data averaging is configured to ignore calculated physiologic
`values that are deemed unacceptable in the calculation of the
`averages.
`8. The pulse oximeter user interface of claim 5 wherein the
`data averaging is configured to display intermediate average
`values during calculation and to display final average values
`to the user in a distinct manner from the display of the inter-
`mediate average values.
`9. The pulse oximeter user interface of claim 5 wherein the
`interface is configured to selectively begin the defined period
`at any time designated by the user.
`
`10
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`US 2008/0194932 A1
`
`Aug. 14, 2008
`
`10. The pulse oximeter user interface of claim 5 wherein
`the interface is configured to operate on recorded or real time
`data.
`
`11. A user interface for a physiologic parameter sensor that
`calculates physiologic parameters of a subject, the interface
`comprising user selectable data averaging function in which
`the interface is configured to selectively obtain and display
`averages of at least some ofthe calculated physiologic param-
`eters over a defined period.
`12. The physiologic parameter sensor user interface of
`claim 11 wherein the data averaging further includes a user
`selection of the defined average period.
`13. The physiologic parameter sensor user interface of
`claim 11 wherein the data averaging is configured to ignore
`calculated physiologic values that are deemed unacceptable
`in the calculation of the averages.
`14. The physiologic parameter sensor user interface of
`claim 11 wherein the data averaging is configured to display
`intermediate average values during calculation and to display
`final average values to the user in a distinct manner from the
`display of the intermediate average values.
`15. The physiologic parameter sensor user interface of
`claim 11 wherein the interface is c