JP2563061B2 - Women's medical equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a feminine diagnostic device for delivering or injecting fluid into the uterus, particularly the fallopian tube, for the diagnosis or treatment of infertility.

[0002]

2. Description of the Related Art In general, the medical treatment of infertility generally employs a medical treatment method in which a fluid such as a gas such as CO2 gas, a liquid such as water, a slurry such as a contrast medium is injected into the uterus, particularly the oviduct. There is. In the medical treatment method using gas, the internal pressure of the fallopian tube due to gas injection equilibrates at a low value if there is no communication obstruction in the fallopian tube. It is used for medical treatment that takes advantage of the rise. The medical method using a liquid is used to wash the uterus and the fallopian tube with the liquid by injecting the liquid into the fallopian tube through the uterus. The medical method using a contrast agent is used to inject the contrast agent into the fallopian tube through the uterus, and then take an X-ray image of the uterus and fallopian tube.

A conventional medical examination apparatus used for this kind of medical examination detects the pressure (injection pressure) of the fluid injected into the fallopian tube as an electric signal, and monitors the pressure in the fallopian tube based on the detected value. This prevents the inside of the oviduct from being maintained at high pressure. However, in this type of conventional medical examination apparatus, the injection pressure of the fluid into the oviduct is fixed at a constant safety limit pressure, and therefore the actual injection pressure cannot be changed according to the symptom of the patient. Therefore, with conventional medical devices, there is a risk of rupture of the fallopian tube for patients who cannot raise the pressure in the fallopian tube to the safe limit pressure, and the pressure in the fallopian tube exceeds the safe limit pressure. For patients who can be raised up to 10%, it is unavoidable to stop the medical treatment or make a diagnosis that "the fallopian tube is occluded" because the safe limit pressure is reached.

There has been proposed a medical examination apparatus capable of adjusting the pressure of fluid feeding (Japanese Patent Publication No. 36-6298). However, in this medical examination device, since the fluid feeding pressure is adjusted by adjusting the relative positions of the fixed contact and the movable contact with a screw member, it is difficult to finely adjust the pressure, and the fixed contact is in the middle of medical treatment. The relative position between the movable contact and the movable contact may change to change the delivery pressure of the fluid, resulting in low safety and certainty of setting and changing the pressure.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to be able to change the actual infusion pressure according to the patient and to increase the safety and certainty of setting and changing the limiting pressure.

[0006]

SOLUTION, ACTION, AND EFFECT The female medical device according to the present invention is
An injecting means for injecting a fluid into the uterus, a pressure detecting means for detecting the pressure of the fluid delivered by the injecting means, and a limiting pressure which is the maximum allowable value of the pressure of the fluid to be infused into the uterus are set to be changeable. Based on the setting means, the limiting pressure set by the setting means and the detection value by the pressure detecting means, the fluid is injected when the detection value by the pressure detecting means becomes equal to or higher than the set limiting pressure. And a control means for controlling the injecting means so as to stop the setting means, and the setting means, an indicator for displaying the limiting pressure by a numeral,
A raising switch for increasing the numerical value displayed on the display and a lowering switch for decreasing the numerical value displayed on the display are provided, and the raising switch and the lowering switch are simultaneously operated continuously for a predetermined time or more. In this case, the numerical value displayed on the display is set as the limiting pressure.

The injection means stops the injection of the fluid when the actual injection pressure becomes equal to or higher than the set limiting pressure. The limiting pressure can be changed by the setting means. Hence,
According to the present invention, the actual injection pressure can be changed according to the patient.

As a result, according to the present invention, for patients who cannot increase the pressure in the fallopian tubes,
By setting a low limit pressure, the risk of rupture of the fallopian tube can be avoided and diagnosis or treatment can be performed, and a high limit pressure is set for patients who can increase the pressure in the fallopian tube. As a result, the diagnosis or treatment can be performed with a relatively high injection pressure, and a safer and more reliable diagnosis or treatment can be performed.

Further, according to the present invention, when the up switch and the down switch are simultaneously operated continuously for a predetermined time or more, the numerical value displayed on the display is set as the limiting pressure, so that both switches are operated at the same time. Unless the pressure is continuously operated for a certain period of time or longer, the limiting pressure is not set and changed, so that the safety and certainty of setting and changing the limited pressure are increased.

Further, the recorder is a recorder for recording an injection pressure curve based on a value detected by the pressure detecting means on a scale corresponding to a recording range, wherein the raising switch and the lowering switch are simultaneously kept for a predetermined time or more during recording. It is preferable to include a recorder that changes the scale when operated in the following manner. Thus, the recording range of the recorded injection curve is switched every time the limiting pressure is changed, so that the recorded injection pressure curve can be easily viewed.

The recorder is a dot printer, the total number of dots for recording is a, the recording range is b,
When the injection pressure is c and the dot to be printed can be determined by calculating (a / b) × c.

The injection pressure curve may be recorded by the recorder either after the injection of the fluid is stopped or at the time of the injection of the liquid.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, a medical examination apparatus 10 uses a gas contained in a gas cylinder 12, for example, CO2 gas, into a fallopian tube through a gas passage 14 and a female uterus (not shown). , Used as a device to diagnose or treat infertility.

The gas flow path 14 communicates with the gas cylinder 12 at one end thereof. A connector 16 is provided at the other end of the gas flow path 14. A hose 18 for connecting gas to the oviduct through the uterus is connected to the connector 16. An electromagnetic valve 20 for opening and closing the gas flow path 14, a flow meter 22 for indicating a gas injection amount per unit time, and a pressure sensor 24 for sensing the pressure in the gas flow path 14 are provided in the gas flow path 14. Are sequentially connected in the gas flow direction.

The electromagnetic valve 20 is a normally closed valve that opens the gas passage 14 when energized, and is driven by a drive circuit 26. The electromagnetic valve 20 is provided with a current sensing head (not shown) of the current detection circuit 28. The current detection circuit 28 detects whether or not a current is supplied to the exciting coil of the electromagnetic valve 20 based on the detection signal from the current detection head, outputs an ON signal when the current is supplied, and turns OFF when the current is not supplied. Output a signal.

The pressure sensor 24 is connected to the input terminal of the pressure detection circuit 30 via the switch section 32. The pressure detection circuit 30 also receives the pressure reference value output from the reference pressure value generation circuit 34 via the switch section 36.
The switch parts 32 and 36 are the switch parts of the changeover switch controlled by the changeover circuit 38, and also the pressure sensor 2
4 and the output signal of the reference pressure value generation circuit 34 are selectively connected to the pressure detection circuit 30. Either an electromagnetic switch or an electronic switch may be used as the changeover switch.

The switching circuit 38 constantly connects the pressure sensor 24 to the pressure detection circuit 30, and switches the reference pressure value generation circuit 34 to the pressure detection circuit 30 only when receiving the switching command. , 34 to control the open / closed state.

If the input terminal of the pressure detection circuit 30 is connected to the pressure sensor 24, the pressure detection circuit 30 detects the gas pressure in the gas flow path 14 based on the output signal of the pressure sensor 24 to detect the actual gas pressure. If the input terminal is connected to the reference pressure value generating circuit 34, the detection value corresponding to the pressure reference value is output based on the output signal of the reference pressure value generating circuit 34. Outputs (reference pressure).

The value detected by the pressure detection circuit 30 is A / D.
After being converted into a digital signal by the converter 40, the digital signal is supplied to the control circuit 42. The control circuit 42 includes a current detection circuit 28, an A / D converter 40, a key switch section 44,
And pressure setter 46 used for restarting gas injection
The drive circuit 26, the switching circuit 38, the display unit 48, the recorder 50, and the buzzer 52 are controlled on the basis of signals supplied from the above. The control circuit 42 is a circuit that uses a central processing unit, and temporarily stores the pressure of each switch, various input information, and the like in an internal or external memory (not shown).

The key switch section 44 and the display section 48 are
As shown in FIG. 2, it is arranged on the operation panel 54.
The operation panel 54 further includes a connector 1 in FIG.
6, an on / off switch 56 for selectively turning on and off the power source, a knob 58 of a flow rate adjusting valve (not shown) for adjusting the flow rate of gas per unit time, and the flow meter 22 in FIG. And a window 60 for visually observing.

The flow rate adjusting valve is the gas flow path 14 in FIG.
Is located in. The set value of the pressure setter 46 is used to determine whether or not the gas injection should be restarted when the injection pressure decreases, and can be changed manually.

In the key switch section 44, a start / stop switch 62 for selectively inputting the start and stop of gas injection, a buzzer stop switch 64 for stopping the buzzer 52 in FIG. 1, a zero calibration for injection pressure detection. A zero adjustment switch 66 for inputting a command, an increase switch 68 for increasing the limiting pressure which is the maximum allowable value of the gas pressure (injection pressure) to be injected into the oviduct, a lowering switch 70 for lowering the limiting pressure, and the like are included.

The gas injection start command can be input by depressing the switch 62 while the gas injection is stopped. On the other hand, the gas injection stop command can be input by depressing the switch 62 while the gas is being injected. The ringing of the buzzer 52 can be stopped by pressing down the switch 64.

The various indicator lights 48 include an indicator light 72 which is lit while the power is on, an indicator light 74 which is lit while the gas is being injected, and an indicator for displaying the actual value of the injection pressure as a number. 1, a display 78 for displaying the limited pressure by numbers, an indicator light 80 that is turned on when the medical examination apparatus 10 is abnormal, an indicator light 82 that is turned on when the pressure is abnormal, and the recorder 5 in FIG.
An indicator lamp 84 and the like which are turned on when there is no recording paper at 0 are included. The indicator lights 72 and 74 are respectively connected to the switch 56.
And 62.

The numerical value displayed on the display 76 changes according to the output signal of the A / D converter 40 in FIG. The output value of the A / D converter 40 is displayed on the display 76 while the power is turned on. Therefore, the display 7
Since the output value of the A / D converter 40 changes following the change in the pressure inside the gas flow path 14, the numerical value displayed in 6 changes following the change in the pressure inside the gas flow path 14.

The numerical value displayed on the display 78 increases while the raising switch 68 is being depressed, and the lowering switch 70
Decreases while being reduced. If both switches 68 and 70 are pressed down simultaneously for a certain time (for example, 1 second) or more,
The control circuit 42 changes the limiting pressure stored in the internal memory to the numerical value displayed on the display 78.

The operation of the medical examination apparatus 10 will be described below with reference to FIGS. 3, 4 and 5.

As shown in FIG. 3, the medical examination apparatus 10 starts its operation when the on / off switch 56 is pressed down and the power is turned on. When the power is turned on, the medical examination apparatus 10 outputs a command to turn on the indicator lamp 72 from the control circuit 42 to the drive circuit of the indicator lamp 72, and sets the limiting pressure in the control circuit 42 (step 100).
In the setting of the limited pressure, the control circuit 42 sets the previous limited pressure stored in the internal memory as the current limited pressure, displays the limited pressure on the display 78, and sets the limited pressure after this time. This is done by applying pressure.

At this stage, the pressure sensor 24 is connected to the pressure detection circuit 30, and the pressure in the gas flow path 14 is displayed on the display 76, but the electromagnetic valve 20 is closed. The numerical value displayed on the display 76 includes an electric error.

Next, when the zero adjustment switch 66 is pressed down, the medical examination apparatus 10 stores the zero calibration key-on in the control circuit 42, and the A / D converter 40 when the pressure sensor 24 is opened to the atmospheric pressure. After performing the zero calibration process of taking in the output value of ## EQU1 ## and calibrating the zero level of the subsequent calculation of the pressure value, it is determined whether the condition for storing the start key-on is satisfied (step 101).

Storing the zero calibration key-on can be carried out, for example, by storing the fact in the memory when the zero adjustment switch 66 is depressed.
Whether or not the condition for storing the start key-on is satisfied can be determined, for example, by determining whether or not the zero calibration key-on is stored and the zero calibration process is completed.

In the zero calibration process, for example, when the zero adjustment switch 66 is pressed down, first, the A /
This can be performed by reading the output value of the D converter 40 (pressure P0 of the pressure sensor 24 at atmospheric pressure) and storing it, and then shutting off the pressure sensor 24 from atmospheric pressure again.

As the stored pressure P0, thereafter, the output value of the A / D converter 40 (pressure PA of the pressure sensor 24 cut off from the atmospheric pressure) is read, and the actual value of injection pressure at that time (current value P1) is read. It is used when calculating. The current value P1 of the injection pressure can be calculated by calculating P1 = PA-P0. As a result, electrical errors due to the pressure detecting means system such as the pressure sensor 24, the pressure detecting circuit 30, and the A / D converter 40 are eliminated.

If the determination result in step 101 is "not established", the medical examination apparatus 10 blinks the pressure indicator light 82 and activates the buzzer 52 to notify that the pressure is abnormal (step). 102) Further, the pressure sensor 24 is opened to the atmospheric pressure (step 103), and in that state, the switch 66 waits until the switch 66 is depressed. Step 102 may be executed when the output value from the A / D converter 40 is a constant value, for example, 10 mmHg or more.

When the start / stop switch 62 is pressed down after the condition for turning on the start key is satisfied, the medical examination apparatus 10 stores the start key on and then
The control circuit 42 determines whether or not the conditions for starting gas injection are satisfied (step 104).

Storing the start key ON can be performed, for example, by storing the fact in the memory when the switch 62 is pressed. The determination as to whether or not the conditions for starting the gas injection have been established, for example,
This can be done by determining whether or not the start key-on is stored. The start key-on is stored in the start key-off by pressing the switch 56 thereafter.

If the gas injection start condition is not satisfied as a result of the determination in step 104, the medical examination apparatus 10
The indicator lamp 74 is turned on and off, the buzzer 52 is operated (step 105), and then the zero adjustment switch 66 is waited until it is pressed down again.

If the result of determination in step 104 is that the conditions for starting gas injection are satisfied, the medical examination apparatus 10 outputs a drive command for opening the electromagnetic valve 20 from the control circuit 42 to the drive circuit 26, and then a drive command. And current detection circuit 2
The control circuit 42 determines whether or not the ON signal output from the signal No. 8 matches (step 106). As a result, the electromagnetic valve 20,
Whether or not there is a failure in the injection means system such as the drive circuit 26 and the current detection circuit 28 can be determined, and the reliability is improved.

If the determination result in step 106 is "mismatch", the medical examination apparatus 10 informs that the apparatus is abnormal by blinking the indicator light 80 and operating the buzzer 52 (step 107). A stop command is output from the control circuit 42 to the drive circuit 26, and gas injection is stopped (step 108). As a result, the medical examination apparatus 10 is maintained in a state where gas injection is stopped.

If the determination result in step 106 is "match", the electromagnetic valve 20 is opened as shown in FIG. 4, so that the gas in the gas cylinder 12 is injected into the oviduct (step 109). Further, the pressure in the gas flow path 14 and thus in the oviduct is detected by the pressure sensor 24 and the pressure detection circuit 30, and the detected value is A / D converter 4.
Is supplied to the control circuit 42 via 0, and the injection pressure is displayed on the display 7
6 is displayed (step 110). The flow velocity of the gas in the gas passage 14 can be confirmed by visually observing the flow meter 22.

Next, the medical examination apparatus 10 supplies a switching command from the control circuit 42 to the switching circuit 38 for a short time (step 111). As a result, the reference pressure value generation circuit 28 is connected to the input terminal of the pressure detection circuit 30 for a short time, so that the reference value corresponding to the pressure reference value output from the reference pressure value generation circuit 28 is output from the A / D converter 40. Is output.

Next, the medical examination apparatus 10 determines in the control circuit 42 whether the value output from the A / D converter 40 matches a predetermined value (step 11).
2). This determination is a determination as to whether or not the value corresponding to the pressure reference value output from the reference pressure value generation circuit 28 is output from the A / D converter 40, and accordingly, the pressure detection circuit 30 and the A / D converter. Whether or not there is a failure in the pressure detecting means system such as 40 can be determined, and the reliability is improved.

If the determination result in step 112 is "mismatch", the medical examination apparatus 10 informs that the apparatus is abnormal by blinking the indicator light 80 and driving the buzzer 52 (step 113), A stop command is output from the control circuit 42 to the drive circuit 26, and gas injection is stopped (step 114). As a result, the electromagnetic valve 20 is closed and gas injection is stopped.

If the determination result in step 112 is "match", the medical examination apparatus 10 determines in the control circuit 42 whether the output value of the A / D converter 40 is equal to or higher than the limiting pressure set in step 100. (Step 115). At this time, since the switching command is not already output to the switching circuit 38, the pressure sensor 24 is connected to the pressure detection circuit 30, and the A / D converter 40 is connected.
The output value of corresponds to the actual value of the pressure (injection pressure) in the gas flow path 14.

Therefore, the determination in step 115 is to determine whether the pressure (injection pressure) in the gas flow path 14 and thus in the oviduct is equal to or higher than the limited pressure. As a result of this judgment,
When the injection pressure is less than the limited pressure, the medical examination device 10 continues to inject the gas until the injection pressure reaches the limited pressure. However, as a result of the determination, if the injection pressure is equal to or higher than the limited pressure, the medical examination device 10 lights the indicator lamp 82 and activates the buzzer 52 to notify that the pressure is abnormal (step 116).

Next, the medical examination apparatus 10 includes the electromagnetic valve 20.
A stop command for closing the drive circuit 26 is issued from the control circuit 42 to the drive circuit 26.
Then, the control circuit 42 determines whether or not the stop command and the OFF signal output from the current detection circuit 28 match (step 117). This allows the electromagnetic valve 20 and the drive circuit 26 to be operated when gas injection is stopped.
Also, it is possible to determine whether or not there is a failure in the injection means system such as the current capacitor 28, and reliability is further enhanced.

If the determination result in step 117 is "mismatch", the medical examination apparatus 10 notifies the fact that the apparatus is abnormal by blinking the indicator light 80 and operating the buzzer 52 (step 118). A stop command is output from the control circuit 42 to the drive circuit 26, and gas injection is stopped (step 119).

If the determination result in step 117 is "match", the electromagnetic valve 20 is closed as shown in FIG. 5, so that the gas injection into the oviduct is stopped (step 120). Also in this stage, the pressure in the gas flow path 14 and thus in the oviduct is detected by the pressure sensor 24 and the pressure detection circuit 30, and the detected value is supplied to the control circuit 42 via the A / D converter 40, and the gas flow path is detected. The pressure in 14 is displayed on the indicator 76. However, the gas flow path 1
The pressure in 4 gradually decreases due to gas leakage.

Next, the medical examination apparatus 10 determines in the control circuit 42 whether or not the injection pressure has decreased from the limited pressure by the value (specified pressure) set in the pressure setter 46, for example, 10 mmHg (step 121). ). The set value of the pressure setter 46 can be manually changed.

When the output value of the A / D converter 40 has not decreased by a certain amount from the limited pressure, the medical examination apparatus 10 determines by the control circuit 42 whether or not to stop the gas injection (step 122). This determination is made by, for example, the switch 5
This can be done by determining whether 6 has been pressed down again, in other words, whether the start key is off. If the determination result is not “stop”, the medical examination apparatus 10 returns to step 121.

However, if the determination result in step 122 is "stop", the medical examination apparatus 10 causes the control circuit 42 to store the stop key on (step 124).
A stop command is output to the drive circuit 26, and gas injection is stopped (step 124). In order to store the stop key ON, for example, the fact that the switch 56 is pressed down again may be stored. In other words, to store the stop key-on, the start key-on stored in step 104 may be rewritten as the start key-off.

As a result of the judgment in step 121, A /
When the output value of the D converter 40 decreases by a certain amount from the limited pressure, the medical care device 10 turns off the indicator lamp 82 and turns off the buzzer 5.
2 is stopped (step 125).

Next, the medical examination apparatus 10 determines in the control circuit 42 whether or not the limited pressure setting change command is input (step 126). The determination in step 126 is made by determining whether or not the switches 68 and 70 are simultaneously pressed for a certain period of time, for example, 1 second. As a result of this determination, if the setting change command has not been input, the medical examination apparatus 10 returns to step 106 in FIG. But,
When the setting change command is input, the limiting pressure is changed (step 127), and then the process returns to step 104 in FIG.

The changing of the limiting pressure in the control circuit 42 is performed by updating the limiting pressure stored in the internal memory to the numerical value displayed on the display 76 because the switches 68 and 70 are simultaneously depressed for a predetermined time or longer. , It will be carried out by setting the numerical value as a future limited pressure. Therefore, the operator
Switch the value displayed on the display 76 to the switch 68 or 70.
Switch to the desired value and then switch 68 and 7
It is possible to change the limiting pressure to an arbitrary value by continuously maintaining 0 at the same time for a certain time or more.

Thereafter, the medical examination apparatus 10 repeats the above steps to cause the switch 62 to restart gas injection and stop the gas injection so that the output value of the A / D converter 40 is maintained within a predetermined range. Alternate until pressed down. When the switch 56 is pressed down again, the power is turned off, and the medical examination apparatus 10 returns to the initial state.

The fact that the switch 62 is depressed again may be rewritten as start key-off by processing it as interrupt information in the control circuit 42. Further, when the switch 62 is pressed down again, this may be processed as interrupt information in the control circuit 42 to forcibly stop the gas injection.

The output signal of the A / D converter 40 is continuously stored in the memory by the control circuit 42 as information for recording the injection pressure by the recorder 50. The information stored in the memory is supplied from the control circuit 42 to the recorder 50 when the gas injection is stopped, whereby the recorder 50 records data such as an injection pressure curve while being controlled by the control circuit 42. Record on paper.

The recorder 50 is a dot printer that prints by arranging a large number of dots in a line and driving arbitrary dots in synchronism with the movement of the recording paper. The recording scale can be changed according to the recording range.

The recording range can be switched to two predetermined values, and is read out to the storage unit of the limited pressure set during recording and displayed on the display 78, and the switch 68 and It is switched every time 70 is simultaneously pressed down for a certain period of time.

The operation during recording will be described below with reference to FIG. In the following explanation, after the gas injection is stopped,
Although the data recording is started, the gas injection and the data recording may be performed in parallel.

When the gas injection is stopped, the control circuit 42
Reads the current recording range b (step 20
1) Read the total number a of dots on the scale of the recorder 50 (step 202), read the current injection pressure c (step 203), and calculate the position A of the dot to be driven among the dots of the recorder ( In step 204), the process of determining whether to change the recording range (step 205) is executed each time the recording paper is advanced by one step.

The current recording range b is the value displayed on the display device 78 (the value read in the limiting pressure storage unit at the time of printing), and therefore should be read from the limiting pressure storage unit. You can Since the injection pressure c is stored in the memory by the control circuit 42, it can be read from the storage unit. The total dot number a is a constant value determined by the recorder 50.

The position A of the dot to be driven can be calculated by calculating A = a / b. Step 2
The determination in 05 may be performed, for example, by determining whether the recording range at that time is changed from the previous recording range.

As a result of the judgment in step 205, NO
If so, the recorder 50 drives the dots calculated in step 204 (step 206). Prior to this, at the same time, or after this, the control circuit 42 drives a predetermined dot for printing a scale line or a number indicating a recording scale, as required.

As a result of the judgment in step 205, YE
If it is S, the control circuit 42 confirms that the raising switch 68 and the lowering switch 70 are simultaneously depressed for a fixed time (step 207), and then the changed recording range is stored in the limited pressure storage unit. After reading, step 201
(Step 208).

The confirmation in step 207 includes confirming that the raising switch 68 and the lowering switch 70 are simultaneously pressed continuously for a fixed time (in recording, a recording range and recording scale change command is received). Good.

The recording range may be changed to an arbitrary value by using the switches 68 and 70, instead of alternately switching to the two predetermined values. That is, in the medical examination apparatus 10, when the raising switch 68 and the lowering switch 70 are simultaneously pressed continuously for a certain period of time, the control circuit 42 updates the limiting pressure at that time to the value displayed on the display 78. The recording range may be changed to an arbitrary value by using this function.

In order to change the recording range to an arbitrary value, the operator changes the numerical value displayed on the display 78 with the switch 68 or 70 while the gas injection is stopped or during the printing. Then, the switches 68 and 70 may be simultaneously pressed down for a certain period of time.

The injection pressure curve 9 shown in FIG. 7 is obtained by executing the above process each time the recording paper is advanced by one step.
0a, 90b, 90c are printed on the recording paper 92 together with scale lines and numerical values.

The injection pressure curve 90a is for a recording range (scale) of 300 mmHg, and the injection pressure curve 90b is for a recording range (scale) of 600 mmHg.
The injection pressure curve 90c is obtained after the recording range (scale) is switched to 300 mmHg again.

Therefore, the injection curves 90a and 90c are
Since the injection curve 90b is substantially enlarged,
With the injection curves 90a and 90c, it is possible to correctly know the subtle changes in the injection pressure.

According to the medical examination apparatus 10, the injection and stop of the fluid are repeated near the limited pressure, the limited pressure can be gradually increased, and the injection range near the limited pressure is changed by changing the recording range of the recorder 50. Since the curve can be enlarged, minute changes in the injection pressure near the limiting pressure can be correctly and easily known.

In the above embodiment, the gas cylinder 12,
The gas flow path 14, the electromagnetic valve 20, the drive circuit 26 and the like act as gas injection means, and the pressure sensor 24, the pressure sensing circuit 30, the A / D converter 40 and the like act as pressure detection means.

The present invention is not limited to the above-mentioned embodiment, and for example, zero calibration processing, determination of whether the injection means system is normal, determination of whether the pressure detection means system is normal, injection means The control and the like may be performed by separate circuits. In this case, a zero calibration circuit for zero calibration, an injection means system check circuit for determining whether the injection means system is normal, and a pressure detection means system check circuit for determining whether the pressure detection means system is normal. , Arithmetic control circuit, etc. are used.

The present invention is not limited to a medical examination apparatus for injecting a gas such as CO 2 gas into the fallopian tube, but also a medical examination apparatus for injecting a liquid such as water into the fallopian tube, and a slurry such as a contrast agent for the fallopian tube. It can also be applied to a medical device for injecting into a patient.
In the case of a medical device for injecting a liquid into the oviduct, for example, a liquid supply pump and its drive circuit are used as a fluid injecting means, and in the case of a medical device for injecting a contrast agent into the oviduct, for example, a syringe that pushes out the contrast agent. A drive mechanism for driving this, a drive circuit for the drive mechanism, and the like are used as fluid injecting means.

In the case of a medical device for injecting a liquid or a contrast medium into the fallopian tube, an infusion rate setter for setting the infusion rate to be changeable, an indicator for the set infusion rate, a detection for the amount of fluid infused A display, an indicator for the amount of fluid injected, etc., and controls the injection means according to the set injection speed,
It is preferable to check whether or not the injector has been set, and if there is an abnormality, notify that fact and stop the injection. Further, in the case of a medical device for injecting a liquid, it is preferable to further check whether or not air bubbles are present in the liquid to be infused, and if so, notify that fact and stop the infusion.

Instead of changing the limiting pressure to an arbitrary value, for example, a plurality of limiting pressures are set in advance in a memory, a setter or the like, and each time the switch 68 or 70 is depressed, the depressed switch is changed to the depressed switch. Read the limited pressure according to the display 7
8, the switches 68 and 70 are simultaneously pressed for a predetermined time, so that the value displayed on the display 78 at that time is set as the subsequent limiting pressure. You may make it switch to a value.

The power on / off switch may be divided into an on switch for turning on the power and an off switch for turning off the power. Similarly, the start / stop switch may be divided into a start switch for starting the injection and a stop switch for stopping the injection.

[Brief description of drawings]

FIG. 1 is a block diagram of an electric circuit showing an embodiment of a medical examination apparatus of the present invention.

FIG. 2 is a diagram showing an example of an operation panel unit of the medical examination apparatus shown in FIG.

FIG. 3 is a diagram for explaining the operation of the medical examination apparatus shown in FIG.

FIG. 4 is a diagram for explaining the operation following FIG.

5 is a diagram for explaining an operation following FIG. 4. FIG.

FIG. 6 is a diagram for explaining an operation during recording.

FIG. 7 is a diagram showing an example of an injection pressure curve recorded by a recorder.

[Explanation of symbols]

 10 Medical Equipment 12 Gas Cylinder 14 Gas Flow Path 16 Connector 18 Hose 20 Electromagnetic Valve 22 Flow Meter 24 Pressure Sensor

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Eiji Koike 2-2-1, Dojo, Urawa-shi, Saitama Atom Co., Ltd. Urawa factory (72) Inventor Kazuo Matsubara 3--18-15 Hongo, Bunkyo-ku, Tokyo Atom Co., Ltd. (56) References Japanese Patent Publication Sho 36-6298 (JP, B1)

Claims (4)

(57) [Claims] 1. A medical treatment apparatus for a woman for injecting a fluid into a uterus, comprising injection means for injecting the fluid into the uterus, pressure detection means for detecting a pressure of the fluid delivered by the injection means, and the uterus. Setting means for variably setting the limiting pressure, which is the maximum allowable value of the pressure of the fluid to be injected into the chamber, and the pressure detection based on the limiting pressure set by the setting means and the value detected by the pressure detecting means. The control means for controlling the injection means so as to stop the injection of the fluid when the detected value by the means becomes equal to or higher than the set limited pressure, and the setting means displays the limited pressure by a numeral. Display unit, a raising switch for increasing the numerical value displayed on the display unit, and a lowering switch for decreasing the numerical value displayed on the display unit, the raising switch and the lowering switch being at the same time. When operated continuously for a predetermined time or more, the number displayed on the display unit and the limit pressure, feminine care device. 2. A recorder for recording an injection pressure curve based on a value detected by the pressure detecting means on a scale corresponding to a recording range, wherein the raising switch and the lowering switch are simultaneously operated for a predetermined time during recording. The apparatus of claim 1 including a recorder that changes the scale when continuously operated. 3. The recorder is a dot printer,
Further, when the number of all dots for recording is a, the recording range is b, and the injection pressure is c, the dot to be recorded is determined by calculating (a / b) × c. Item 2 4. The apparatus according to claim 2, wherein the recorder records the injection pressure curve after the injection of fluid is stopped or in parallel with the injection of liquid.