JPH0535105U - Wireless adapter device - Google Patents

Abstract

(57) [Abstract] [Purpose] A wired patient monitoring device can be easily converted into a wireless patient monitoring device and can also be used in combination with a conventional transmitter using weak radio waves. [Structure] Input means 13, 14 for inputting a primary modulation signal
A level detecting means 15 for detecting the level of a specific signal included in the primary modulated signal, an output control means 19 for setting a predetermined value of the primary modulated signal to be transmitted, and a transmitting means for transmitting the primary modulated signal as a radio wave. 20 and 20 are housed in the same housing, and the primary modulated signal is input by either the optical coupling means 13, 14 or the electromagnetic coupling means 13 ₁ , 14 ₁ .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wireless adapter device suitable for use in a patient monitoring device.

[0002]

[Prior Art]

Conventionally, when a biometric information signal is measured by a patient monitoring device and the measured biometric information signal is transmitted to a central station, wired or wireless transmission is used. FIG. 6 shows an example of transmission of a biometric information signal by a conventional wired system. 6 1 is a wired type patient monitor, via leads 2 ₁ connector 2 is connected to terminal 3 of the facility has been times line W in a hospital room. In the hospital room A, a biological signal is input via the electrodes or transducers 5 and the head amplifier 4, displayed on the screen, and transmitted as a biological information signal to the central station CS via the line W. Alternatively, like the hospital rooms B and C, the electrodes or transducers 5 are directly connected to the wired patient monitoring apparatus 1 and the biometric information signal is transmitted to the central station CS via the line W. A center monitor 6 is installed in the central station CS, and the biometric information signal of the patient transmitted from each hospital room is displayed on the screen or recorded by a recording device or the like so that it can be constantly monitored. In this way, the wired patient monitoring device 1 in each of the hospitals A, B, and C transmits the biometric information signal to the central station CS side only by connecting to the line W. Such a wired system is suitable for large-scale systems and critically ill patients because it can transmit various types of biological information signals.

FIG. 7 shows an example of transmission of a biometric information signal by a conventional wireless system. Reference numeral 7 is a wireless patient monitoring apparatus arranged near the bed B of the hospital room D, and 8 is an antenna for receiving a biometric information signal wirelessly transmitted from a transmitter 9. In the hospital room E, the wireless patient monitoring device 7 is not installed and the transmitter 9 sends a biometric information signal to the central station CS without monitoring in the patient room. Reference numeral 10 is a wireless type center monitor installed in the central station CS, which is equipped with a receiving antenna 11 and receives the biometric information signal transmitted from the transmitter 9 from each of the hospital rooms D and E, and displays or records the information. Monitor. Since this wireless system does not restrain the patient, it is easy to install and move, and is widely used.

[0004]

[Problems to be solved by the device]

 However, in the wired system, it is necessary to install a line on the wall surface in advance and provide a terminal for connecting the wired patient monitoring device 1 to each patient room, and it is costly to enable measurement of various types of biological signals. There was a drawback that became high. Furthermore, since it is configured exclusively for wired use, it cannot be used in general hospital rooms without line facilities, and there is the inconvenience that the degree of freedom in installation is low and the use efficiency is extremely poor. In view of the above problems, the present invention provides a wireless adapter device that allows a wired patient monitoring device to be easily converted into a wireless patient monitoring device and can be used together with a conventional transmitter having a weak radio wave output. The purpose is to provide.

[0005]

[Means for Solving the Problems]

The wireless adapter device of the present invention detects, for example, as shown in FIG. 1, input means 13 and 14 (13 ₁ and 14 ₁ ) for inputting a primary modulation signal and the level of a specific signal included in this primary modulation signal. The level detection means 15, the output control means 19 for setting the primary modulation signal to be transmitted to a predetermined value, and the transmission means 20 for transmitting the primary modulation signal as radio waves are housed in the same housing.

[0006]

[Action]

 A biological information signal is input from the outside as a pulse-width modulated time-division modulated signal or frequency-modulated multiple subcarrier mixed signal, that is, a primary modulated signal, and the signal level of the clock component contained in this signal is detected. . If the signal level is higher than the specified value, the primary modulated signal is passed, the frequency band and amplitude value are set, and then the signal is transmitted as radio waves. By doing this, it is possible to obtain a predetermined frequency band and convert it to a wireless patient monitoring device that satisfies the adjacent channel leakage power condition by simply connecting the connector of the wired patient monitoring device to the line. It is possible to connect to the mold center monitor. In addition, such a conversion can easily convert a room for general patients without a line facility into a room for critically ill patients, so that the wired patient monitoring device and the room can be effectively used. Further, a transmitter having a conventional weak radio output can be used.

[0007]

【Example】

An embodiment of the wireless adapter device of the present invention will be described below with reference to FIGS. 1 to 5, parts corresponding to those of the conventional example shown in FIGS. 6 and 7 are designated by the same reference numerals. FIG. 1 shows the entire wireless adapter device 12, which is configured in, for example, one housing (not shown). In the figure, reference numerals 13 and 14 are, for example, an optical connector and a photoelectric conversion unit which form an input means. A biological information signal from the wired patient monitor 1 or the transmitter 9 is, for example, pulse width modulated or frequency modulated to the optical connector 13, and is used as a primary modulation signal such as a time division modulation signal or a multiple subcarrier mixing signal. It is input via an optical cable (not shown). That is, the biometric information signal is separated at the stage of primary modulation and is input to the wireless adapter device 12 of this embodiment. The photoelectric conversion unit 14 is composed of, for example, a photodiode or the like, and converts an optical signal into an electric signal. This input means may be composed of an ordinary electric connector 13 ₁ and an insulating transformer 14 ₁ (indicated by an alternate long and short dash line), and an input signal may be inputted by an electric cable (not shown). The insulating transformer 14 ₁ prevents the leakage current from flowing out to the electric cable, and in the case of the optical connection by the optical connector 13 and the photoelectric conversion unit 14 described above, such an electric insulating means is not necessary.

The primary modulation signal input from the above-mentioned input means is sent to the level detection unit 15 and the first switch 16. The level detector 15 is composed of, for example, a bandpass filter, a detector, etc., separates, for example, a clock component contained in the primary modulation signal, detects whether the signal level is equal to or higher than a predetermined value, and outputs the signal. When the level is equal to or higher than the predetermined value, the operation signal is sent to the first switch 16. The first switch 16 switches the movable contact c to the contact point b side by the actuation signal of the level detection unit 15 to pass the primary modulation signal, and when the detection level of the level detection unit 15 is below a predetermined value, the actuation signal is generated. Therefore, the movable contact c is held on the side of the contact a, which is not connected, and the primary modulation signal is not passed. The movable contact c of the first switch 16 is connected to the contact d of the second switch 18, and the other contact e of the second switch 18 is connected to the ID generator 17. The second switch 18 is actuated when the power supply unit 24, which will be described later, is turned on, and the movable contact f is always connected to the contact point d side. Switched to the side. The first and second switches 16 and 18 can be composed of electronic switches such as semiconductors. The above-mentioned ID generator 17 generates an ID signal such as a maker name and a device number.

The primary modulation signal and the ID signal output via the second switch 18 are input to the output control unit 19. The output control unit 19 is composed of, for example, a limiter and a low-pass filter, and has a frequency band so that the radio waves corresponding to the primary modulation signal and the ID signal to be transmitted satisfy the predetermined occupied frequency band and the adjacent channel leakage power condition. And limit the amplitude.

Reference numeral 20 denotes a transmission unit that transmits the primary modulation signal set to a predetermined value by the output control unit 19 as a radio wave, and includes a modulation unit 21, a high frequency power amplification unit 22 and an antenna 23. Therefore, the input primary modulation signal is secondarily modulated by the modulator 21 and transmitted.

The power supply unit 24 described above is configured by a commercial AC input, an external DC input or a battery, or a combination thereof, and supplies a current or a voltage to each unit of the wireless adapter device 12. Further, the power supply section 24 is adapted to output an operation signal for driving the second switch 18 for a certain period of time when it is turned on.

FIG. 2 is a schematic view showing a usage state of the embodiment shown in FIG. The wireless adapter device 12 is installed on the wired patient monitoring device 1, and the connector 2 is reconnected from the terminal 3 of the line W. Therefore, the biological signal input via the electrodes or the transducers 5 is post-processed and modulated as a biological information signal by a required calculation in the wired patient monitoring apparatus 1 and is then received by the wireless adapter apparatus 12 as a primary modulated signal. It is input and transmitted to the central station CS by a predetermined radio wave.

Next, the operation of the embodiment shown in FIG. 1 will be described. The connector 2 of the wired patient monitoring device 1 is connected to the optical connector 13 of the wireless adapter device 12. The biological information signal is output as, for example, a time-divided pulse-width modulated signal or a frequency-modulated mixed signal of multiple subcarriers, that is, a primary modulated signal in the wired patient monitoring apparatus 1, and is output via the optical connector 13. Is input to the photoelectric conversion unit 14, converted into an electric signal, and sent to the level detection unit 15 and the first switch 16.

The level detection unit 15 detects a clock component included in the primary modulation signal, determines whether the level is a predetermined value or more, and if the level is a predetermined value or more, the movable contact of the first switch 16 1 c is switched to the contact b side, and the primary modulation signal is output to the second switch 18. When the level of the clock component is equal to or lower than the predetermined value, the movable contact point c of the first switch 16 does not operate, remains connected to the contact point a side, and the primary modulation signal is not output. The movable contact f of the second switch 18 is normally connected to the contact d side, but is switched to the contact e side for a certain period of time only when the power supply section 24 is turned on. ID signals such as name and device number are transmitted.

The primary modulation signal and the ID signal output from the second switch 18 are sent to the output control unit 19, limited to a predetermined amplitude and frequency band, and output to the transmission unit 20. The transmitter 20 modulates the primary modulated signal and the ID signal and high-frequency amplifies them, and transmits them as radio waves from the antenna 23. This radio wave is received by the wireless center monitor 10 (FIG. 7) or receiver (not shown) of the central station CS, and the patient is monitored.

As described above, by installing the wireless adapter device 12, the wired patient monitoring device can be easily converted to a wireless patient monitoring device.

FIG. 3 shows an example in which the wireless adapter device 12 of this embodiment is used in a patient room having a strong radio wave shielding property. In this example, the wired patient monitoring device 1 and the wireless adapter device 12 are connected by an extension cord 26, and the wireless adapter device 12 is installed outside the hospital room R. With such a configuration, the biometric information signal can be transmitted to the central station CS only by using the extension cord 26. Further, as shown in the figure, the wired patient device 1 is placed on a dolly 25 or the like so as to be movable, and when used in combination with the wireless adapter device 12, it can be used in a hospital room without line facilities. The general patient room can be converted to a critically ill room.

FIG. 4 shows an example in which a transmitter 9 having a weak radio output, which has been conventionally used, is connected to a radio adapter device 12 by an optical cable 27. With this configuration, the conventional transmitter 9 can be used together with the wireless adapter device 12 as a transmitter of a specified low power wireless station according to the revised Radio Law.

FIG. 5 shows that the radio type patient monitoring device 7 receives the radio wave transmitted from the conventional weak radio output transmitter 9 via the lead antenna LA, and the output of the radio type patient monitoring device 7 is received. 2 shows an example of transmitting from the wireless adapter device 12. Also in this example, the conventional transmitter 9 can be used in combination with the wireless adapter device.

By thus providing the wireless adapter device, the wired patient monitoring device can be easily diverted as the wireless patient monitoring device, so that connection to the wireless center monitor is possible and there is no line facility. The wired patient monitoring device can be effectively used even in the hospital room. In addition, the wired patient monitoring device to which the wireless adapter device is connected can be mounted on a trolley so that it can be moved, so that a patient room for general patients can be converted into a patient room for critically ill patients. Furthermore, a transmitter having a conventional weak wireless output can be used by installing this wireless adapter.

It should be noted that the present invention is not limited to the above-described embodiment, and needless to say, various other configurations can be adopted without departing from the gist of the present invention.

[0022]

[Effect of the device]

 As described above, according to the present invention, it is possible to easily use a wired type patient monitoring device, which has conventionally had a low degree of freedom, in combination with a wireless adapter device without modifying the device body. Since it can be used as a wireless patient monitoring device, it can be connected to a wireless center monitor and can be used even in hospital rooms without line facilities, thus improving utilization efficiency. In addition, since the wired patient monitoring device to which the wireless adapter device of the present invention is connected can be placed on a trolley and moved, a general patient room can be converted into a critically ill room. Further, since it can be constructed and operated independently of a wired or wireless patient monitoring device, productivity and economic efficiency are improved. Moreover, the conventional transmitter having a weak radio wave output can be used by installing the wireless adapter device of the present invention, and the transmitter can be effectively used.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a wireless adapter device of the present invention.

FIG. 2 is a diagram showing an example of use of this embodiment.

FIG. 3 is a diagram showing an example of using this embodiment outside a hospital room.

FIG. 4 is a diagram showing an example in which this embodiment and a transmitter are connected by an optical cable and used.

FIG. 5 is a diagram showing an example in which this embodiment is used in combination with a wireless patient monitoring apparatus and a transmitter.

FIG. 6 is a diagram showing a usage state of a conventional wired type patient monitoring apparatus.

FIG. 7 is a diagram showing a usage state of a conventional wireless patient monitoring device.

[Explanation of symbols]

13 optical connector 13 ₁ electrical connector 14 photoelectric conversion unit 14 ₁ isolation transformer 15 level detection unit 16 first switch 19 output control unit 20 transmission unit

Claims (3)

[Scope of utility model registration request] 1. Input means for inputting a primary modulation signal, level detection means for detecting the level of a specific signal included in the primary modulation signal, and output control means for setting the primary modulation signal to be transmitted to a predetermined value. And a transmitting means for transmitting the primary modulated signal as an electric wave in the same housing. 2. The wireless adapter device according to claim 1, wherein the input means is an optical coupling means. 3. The wireless adapter device according to claim 1, wherein the input means is an electromagnetic coupling means.