JP4649364B2 - Air massager - Google Patents

Description

  The present invention relates to an air massager that performs massage with air pressure and measures an alarm and issues an alarm when an abnormality occurs.

  The conventional air massager equipped with an alarm function is merely a function of notifying that an abnormality has occurred, and nursing how long the abnormality has continued when the user is sleeping or unconscious. Cannot be judged.

  As for the abnormality alarm, the type of abnormality such as air leakage is displayed or only the fact that the abnormality has occurred is simply notified to the operator by a lamp or buzzer sound. Therefore, if the device stops functioning due to pressure drop due to air leakage or inability to control pressure due to a system failure, whether the cause of the abnormality is in the equipment body or a device other than the equipment body such as an air bag or supply pipe. The operator cannot immediately determine whether an accessory is present or which one is faulty.

Japanese Utility Model Publication No. 53-17673 Japanese Utility Model Publication No.59-6832

  When the user is used in a sufficiently conscious state, it is sufficient to ask the user about the failure status, so there is no problem.

  However, when used for the purpose of preventing venous thrombosis, which may occur in general anesthesia, for example, there are many cases where the user is unconscious, and the doctor or nurse who performs the operation, It is virtually impossible to monitor the massager at all times, and it is difficult to detect abnormalities immediately.

  Venous thrombosis is caused by the same posture for a certain period of time and is generally referred to as economy syndrome. In the guidelines for prevention of venous thrombosis, massage with an air massager or intermittent air is used for operations of medium risk or higher. It is recommended to use the compression method. According to these guidelines, medium risk is considered to be surgery for more than 30 minutes in gynecological surgery, or surgery for more than 45 minutes in general surgery.

  In other words, if an abnormality occurs in any part of the air massager and the device stops with an abnormality alarm, the risk of developing venous thrombosis is increased, and the air massager stop time is increased. It becomes an important judgment material that determines the treatment for the patient afterwards. Therefore, it is extremely important not only to issue an abnormality occurrence alarm but also to display when and how long an abnormality has occurred.

  An object of the present invention is to provide an air massager that solves the above-described problems and can notify an operator of the occurrence of an abnormality and its elapsed time.

  In order to achieve the above object, the technical features of the air massager according to the present invention include a plurality of air bags that are wound around an actuated body and individually operate through air supply pipes for these air bags. A plurality of switching valve devices for supplying and exhausting air, a pneumatic pressure source device connected to the switching valve device, a pressure sensor attached to the air supply pipe, and detecting a pressure change state by the pressure sensor during operation There are provided detection means for detecting an abnormality, alarm means for issuing an alarm when the detection means detects the occurrence of abnormality, and time display means for measuring and displaying the elapsed time from the time of occurrence of the abnormality.

  According to the air massager of the present invention, all the air bag pressure is controlled by the pressure sensor, and the occurrence of abnormality is self-determined by optimizing the opening / closing timing of the switching valve and the reading timing of the sensor signal. Therefore, it is possible to measure the time from the occurrence of an abnormality and to issue an appropriate alarm, and to obtain an important judgment material for performing a treatment for the user after the occurrence of the abnormality.

  Further, if the abnormal part is self-diagnosed during the operation, it is possible to promptly arrange subsequent repairs or consumables by displaying the abnormal part.

  The present invention will be described in detail based on the embodiments shown in the drawings.

  FIG. 1 shows a configuration diagram of a pneumatic circuit. An air supply pipe 4 is connected to a compressor 1 via an orifice valve 2 and an air tank 3, and a pressure sensor 5 for pressure detection is attached to the supply pipe 4. It has been. Three sets of manifolds 9a, 9b, 9c, each of which includes one solenoid three-way valve 6 and two solenoid two-way valves 7, 8, are connected to the supply pipe 4 in parallel. Each solenoid two-way valve 7a, 8a, 7b, 8b, 7c, 8c is connected to air bags 10, 11, 12, 13, 14, 15 that expand and contract by air pressure and massage each part of the leg. ing.

  The compressor 1, the solenoid three-way valves 6, and the two-way valves 7 and 8 expand and contract the air bags 10 to 15 according to a predetermined massage pattern according to the operation program of the control circuit built in the apparatus main body 20 of FIG. It is supposed to let you. A panel plate 21 made of liquid crystal is provided on the front surface of the apparatus main body 20, and devices other than the air bags 10 to 15 in FIG.

  The number of air bags 10 to 15 and the total number of two-way valves 7 and 8 are the same. By arranging the three-way valve 6 in each manifold 9a, 9b and 9c, the air bags 10 to 15 depend on other air bags. Pressure can be adjusted, and air supply and exhaust can be performed independently between the three sets of manifolds 9a, 9b, 9c, and the degree of freedom of the massage pattern can be greatly improved.

  For example, the manifold 9a is used to supply and exhaust the air bag 10 and the air bag 11 in order. First, in order to supply air to the air bag 10, when the solenoid three-way valve 6a and the solenoid two-way valve 7a are turned on while the compressor 1 is operated, the compressed air from the compressor 1 turns the three-way valve 6a and the two-way valve 7a. It flows into the air bag 10.

  Immediately after turning on the three-way valve 6a and the two-way valve 7a, the pressure value of the pressure sensor 5 temporarily decreases, but as the air bag 10 is filled with air, the pressure value of the pressure sensor 5 gradually increases. When the pressure value set in advance by the control device is equal to the output from the pressure sensor 5, that is, when it is detected that the air bag 10 has sufficiently expanded, the solenoid two-way valve 7a and the solenoid three-way valve 6a are turned off. The compressor 1 is stopped and the pressure in the air bag 10 is maintained as it is.

  Next, in order to inflate the air bag 11 while maintaining the pressure of the air bag 10, the compressor 1 is actuated again, the solenoid three-way valve 6a and the solenoid two-way valve 8a are turned on, and air flows into the air bag 11. When the output of the pressure sensor 5 becomes equal to a predetermined pressure value, the two-way valve 8a and the three-way valve 6a are turned off, the compressor 1 is stopped, and the pressure in the air bag 11 is maintained.

  In order to exhaust the air in the air bag 10, the two-way valve 7a is turned on and is exhausted through the three-way valve 6a. Similarly, in order to exhaust the air in the air bladder 11, the two-way valve 8a is turned on and the three-way valve 6a is exhausted.

  Thus, by switching the pneumatic circuit for the air bags 10 to 15 according to the operation program of the control circuit by the three-way valve 6 and the two-way valves 7 and 8 of the manifolds 9a, 9b, and 9c, one pressure sensor 5 is used. The pressure control of the plurality of air bags 10 to 15 can be sequentially processed for each of the manifolds 9a, 9b, and 9c.

  In operation, the three-way valve 6 and the two-way valves 7 and 8 are switched by an operation program, and the control circuit confirms that the pressure value of the pressure sensor 5 has reached a predetermined pressure value. It is necessary to move to the operation.

  When the pressure value of the pressure sensor 5 does not reach the predetermined pressure even if a predetermined time elapses after switching the three-way valve 6 and the two-way valves 7 and 8 during the operation of the air massager, that is, the time is over. Is in an abnormal state where, for example, there is an air leak somewhere in the air massager, an alarm such as a lamp or buzzer sound is issued from the apparatus main body 20. At the same time, the timer circuit is activated to start measuring the time from the occurrence of the abnormality and display the elapsed time on the panel plate 21 of the apparatus body 20.

  Subsequently, in order to detect an abnormal part, the diagnostic program is operated, the three-way valves 6a, 6b, 6c are turned off, and the pressure increase of the pressure sensor 5 is detected. If the pressure by the pressure sensor 5 does not reach the set pressure within a predetermined time, it is known that the pressure system on the compressor 1 side is abnormal as time is over, and this is displayed on the panel plate 21 of the apparatus main body 20.

  If the pressure by the pressure sensor 5 rises to a predetermined pressure within a predetermined time with the three-way valves 6a, 6b, 6c turned off, there is no abnormality in the pressure system on the compressor 1 side. Therefore, the diagnosis program checks the switching state of the three-way valve 6 and the two-way valves 7 and 8 to determine whether an abnormality has occurred, and the pressure related to the corresponding three-way valve 6 and two-way valves 7 and 8. Check the system by switching these valves.

  The diagnostic program checks the pressure increase by the pressure sensor 5 while switching the corresponding valve, and detects that an abnormality has occurred at a location where the pressure increase cannot be obtained within a predetermined time.

  For example, in the panel plate 21 of FIG. 3, there is an abnormality in the air bag 14 indicated by an arrow, and the pressure that should originally be about 15 kpa rises only by 10 kpa, so an abnormality is detected. Moreover, it has shown that 37 minutes have passed since the abnormality occurrence time.

  Further, if a plurality of pressure sensors 5 are arranged, diagnosis can be facilitated, and an abnormal part can be found quickly.

  In the embodiment, the number of air bags is 6. However, there is no problem even if other than 6 air bags are used. Further, the number of manifolds is not limited to the embodiment. Furthermore, the connection between the air bags 10 to 15 and the two-way valves 7 and 8 is not limited to the embodiment.

It is a block diagram of the pneumatic circuit of an Example. It is a front view of an apparatus main body. It is a front view of a panel board.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Compressor 4 Air supply pipe 5 Pressure sensor 6 Three-way valve 7, 8 Two-way valve 9a, 9b, 9c Manifold 10-15 Air bag 20 Apparatus main body 21 Panel board

Claims (6)

  A plurality of air bags that are wound around an object to be operated, a plurality of switching valve devices that individually supply and exhaust air to and from these air bags via an air supply pipe, and the switching valve device An air pressure source device, a pressure sensor attached to the air supply pipe, a detection means for detecting a pressure change state by the pressure sensor during operation and detecting an abnormality, and an alarm is issued when an abnormality occurrence is detected by the detection means An air massager comprising: an alarm unit; and a time display unit that measures and displays a time elapsed from the occurrence of the abnormality.   The air massager according to claim 1, wherein the detection unit detects a location where an abnormality has occurred.   The air massager according to claim 2, wherein the abnormality occurrence portion can be detected at front and rear portions with the switching valve device as a boundary.   The air massager according to claim 1, wherein the alarm means outputs a lamp or a buzzer sound.   The air massager according to claim 1, wherein the air bags are operated by the individually connected switching valve devices.   6. The air massager according to claim 5, wherein the switching valve device includes one three-way valve for supplying and exhausting air and a two-way valve connected to each air bag.

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