Fingertip Oximeter and a Method for Observing a Measurement Result Thereon

• US 20080242959A1
• Filed: 01/11/2007
• Published: 10/02/2008
• Est. Priority Date: 08/07/2006
• Status: Active Grant

• Current Assignee: Beijing Choice Electronic Technology Co., Ltd. (Tianjin Chase Sun Pharmaceutical Co., Ltd.)
• Original Assignee: Beijing Choice Electronic Technology Co., Ltd. (Tianjin Chase Sun Pharmaceutical Co., Ltd.)
• Inventors: Xu, Feng, Liu, Shuhai
• Granted Patent: US 8,185,179 B2
• Time in Patent Office: Days
• US Class Current: 600/323
• CPC Class Codes: A61B 5/145 Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissuemeasuring of blood pressure or blood flow A61B5/02; non-radiation detecting or locating of foreign bodies in blood A61B5/06
• CPC Class Codes: A61B 5/14552 Details of sensors specially adapted therefor
• CPC Class Codes: A61B 5/6826 Finger
• CPC Class Codes: A61B 5/6838 Clamps or clips
• CPC Class Codes: A61B 5/72 Signal processing specially adapted for physiological signals or for diagnostic purposes character recognition, recognising digital ink, document-oriented image-based pattern recognition G06V30/00; recognition or understanding of postal images G06V30/424
• CPC Class Codes: A61B 5/743 Displaying an image simultaneously with additional graphical information, e.g. symbols, charts, function plots
• CPC Class Codes: A61B 5/7475 User input or interface means, e.g. keyboard, pointing device, joystick
• CPC Class Codes: G06F 1/3203 Power management, i.e. event-based initiation of a power-saving mode
• CPC Class Codes: G06F 1/3265 Power saving in display device
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

There is provided a fingertip oximeter that has a plurality of display modes which are presented sequentially in a circulating way, allowing users to easily observe a measurement result from any of surrounding directions. The present invention makes users to be able to observe a measurement result of the fingertip oximeter from any of surrounding directions, without the need of bending his/her finger. Thus, any partial occlusion of the arterial blood capillary can be avoided, so that strength of the pulse will not decrease, and strength of the signal will not be affected. As a result, the precision of the measurement is improved.

Claims

1. A fingertip oximeter comprising a plurality of display modes which are capable to be presented one by one in a circulating way, allowing users to be convenient to observe a measurement result from any of surrounding directions, characterized in that the fingertip oximeter has a manually pressing button for updating the display mode in use;

and

each display mode has a heading area and a parameter area, in which the characters in the heading area are presented in an upright standing way or in an upside-down standing way, while the parameter area is provided to show a measurement parameter, a pulse column, and/or a waveform in an upright standing way, in a right laying way, in an upside-down standing way, or in a left laying way.

2. A fingertip oximeter according to claim 1, characterized in that the fingertip oximeter at least has such six display modes that in Mode 0, the heading is displayed in a landscape upright standing way, measurement parameters are displayed in a landscape upright standing way, and a pulse column for indicating the strength of pulse is displayed in a landscape left standing way;

in Mode 1, the heading, measurement parameters, and the pulse column are respectively displayed in a portrait upright standing way, a portrait right laying way, and a centered standing way;

in Mode 2, the heading, measurement parameters, and the pulse column are respectively displayed in a landscape upside-down standing way, a landscape upside-down standing way, and a right standing way;

in Mode 3, the heading is displayed in a landscape upright standing way, measurement parameters are displayed in a portrait left laying way, and the pulse column is displayed in a centered standing way;

in Mode 4, the heading is displayed in a landscape upright standing way, measurement parameters are displayed in a landscape upright standing way, and a landscape solid waveform is displayed; and

in Mode 5, the heading is displayed in a landscape upright standing way, measurement parameters are displayed in a landscape upright standing way, and a landscape outlined waveform is displayed.

3. A fingertip oximeter according to claim 1, characterized in that the fingertip oximeter has a means for reporting the measurement result through a voice, thus informing the user and others nearby of the measurement result.

4. A fingertip oximeter according to claim 1, characterized in that the fingertip oximeter comprises at least one button which is adapted to input an instruction for updating a display mode of the fingertip oximeter in use;

a central processing unit which is adapted to determine whether any button is pressed down, upon such an operation is detected, set a new display mode and update the display mode in use with the new one, and transmit a signal regarding the new display mode to the display;

a display which is adapted to receive the signal regarding the new display mode from the central processing unit, and present the measurement result in the new display mode;

a signal drive unit which is adapted to make a light emitter emit a beam of light under control of the central processing unit;

a signal acquisition &

amplification unit which is adapted to receive the light passing through the measured tissue, convert it to an electric signal, and transmit the electric signal to the central processing unit; and

a power supply unit, for supplying power to the fingertip oximeter, which includes a power input unit and a power output &

management unit, and the button and the power input unit are connected with the power output &

management unit respectively.

5. A fingertip oximeter according to claim 4, characterized in that the central processing unit at least comprises a press scan unit, a switching &

setting unit, and a display update unit, in which the press scan unit is adapted to determine whether any button is pressed down, and upon such an operation is detected, transmit a first signal regarding the operation to the switching &

setting unit;

the switching &

setting unit is adapted to receive the first signal from the press scan unit, set a new display mode in consideration of the display mode in use, and transmit a second signal regarding the new display mode to which the display mode in use is to be switched to the display update unit, and

the display update unit is adapted to receive the second signal from the switching &

setting unit, update the display mode in use, and transmit a third signal regarding the new display mode to the display.

6. A method for observing a measurement result of the fingertip oximeter from any of surrounding directions, characterized in that the method comprises such steps that

step 1) the user inputs an instruction for updating a display mode of the fingertip oximeter in use by pressing a button down;

step

     2) the central processing unit sets a new display mode to which the display mode in use is to be switched, updates the display mode in use with the new display mode, and transmits a signal regarding the new display mode to the display after detecting pressing-down of the button; and

step

     3) the display receives the signal regarding the new display mode to be presented from the central processing unit, and presents a measurement result in the updated new mode, in which step

     2) further comprises such sub-steps that the press scan unit determines whether the button is pressed down, and transmits a first signal regarding pressing-down of the button to the switching &

setting unit if it detects that the button is pressed down;

the switching &

setting unit receives the first signal from the press scan unit, and sets a new display mode to which the display mode in use is to be switched, and transmits a second signal regarding the new display mode to the display update unit; and

the display update unit receives the second signal from the switching &

setting unit, updates the display mode in use, and transmits a third signal regarding the new display mode to the display.

7. A method for observing a measurement result of the fingertip oximeter from any of surrounding directions according to claim 6, characterized in that the method comprises such steps that the fingertip oximeter reports the measurement result through a voice, thus informs the user and others nearby of the measurement result.