JPH03207371A - Dissolution treatment apparatus - Google Patents

Abstract

PURPOSE:To perform the injection/suction of a sufficient medical fluid corresponding to the state in a living body by variably controlling the injection amount due to a medical fluid injection means to the amount corresponding to the detected pressure of a pressure detection means. CONSTITUTION:The injection amount of the medical fluid 7a dissolving the thrombosed matter in a living body by a medical fluid injection means 22 is variably controlled to the amount corresponding to the detected pressure of a pressure detection means 21. A fluid suction means 23 is controlled so as to be operated when the detected pressure of the pressure detection means 21 exceeds a predetermined value and the pressure of an injection region is controlled so as to be held to an almost constant level under sufficient pressure to inject and suck the medical fluid 17a. Therefore, the injection speed and suction operation of the medical fluid can be controlled corresponding to a treatment region. By this method, treatment enhanced in the dissolving effect of thrombosed matter can be safely performed by holding the pressure of the treatment region almost constant and refluxing the medical fluid.

Description

[Detailed description of the invention]

[Industrial Application Field] The invention relates to a new dissolution treatment device that introduces a medical solution that dissolves coagulum in a living body into the living body and discharges a fluid containing the medical solution from the living body. Riri. [Prior art] In recent years, for example, in vivo! ! Agglomerates such as stones (gallbladder stones) generated in the i.
A stone dissolution treatment device for treating stones by injecting mulberry liquor such as 3E) and dissolving the agglomerates has been considered. Stone dissolution treatment described! For example, Japanese Patent Application Publication No. 62-117545Fj and Special Bulletin No. 63-40
54 1@Proposed in the official gazette. The proposed device for FTJ personnel dissolves agglomerates such as stones by injecting a certain length of a medical solution into the treatment site within the body using a bomb, and then repeats the injection and suction of the medical solution. It is designed to promote the dissolution of the agglomerates. Also, the latter proposed device is similar to the former viI! further, detecting the pressure of the intrabody cavity site where the coagulum is located;
The detected pressure is used to maintain the pressure in the body cavity within a predetermined range. It is designed to control the reflux of the chemical solution. [Problems to be Solved by the Invention] However, in the stone dissolution treatment device proposed in the above-mentioned Japanese Patent Application Laid-open No. 62-11-7545, for example, a drug solution that can be injected into the IlIl sac in which slag is formed is difficult to solve. There is no means to measure the amount of the drug, and there are problems in that the amount of drug solution injected at one time is insufficient to dissolve the stone, or the amount of drug solution injected is too large and may overflow into the body cavity. In addition, in the stone-dissolving Pf1 medical equipment proposed in the above-mentioned Japanese Patent Application Laid-open No. 63-40541Q 'C', the control of the injection bomb for the medicinal solution is manually set, and the control is set appropriately according to the in-vivo condition. The problem is that it is not variable. The present invention has been made in view of the above-mentioned points, and provides a dissolution treatment device that can inject/suck a sufficient drug solution into a living body with a substantially constant force depending on the state of the living body. It is intended to. [Means for solving the vR problem] A drug solution injection means for injecting into the living body a drug solution for dissolving coagulum in the living body, and a flow for sucking the fluid containing the drug solution from the living body {A suction means] , a pressure detecting means for detecting the pressure at the injection site of the chemical liquid, and controlling the injection suspension by the medical liquid 11 person means to be suspended according to the detected pressure of the pressure detecting means, and controlling the fluid suction means to detect the pressure. The device is provided with a control stage to control the operation when the detected pressure of the means exceeds a predetermined value, and to keep the pressure at the 11th part of the human body substantially constant. [Operation: Variably control the injection skewer by the chemical liquid injection means to be a product according to the pressure detected by the pressure detection means, and control the fluid suction means so that the pressure detected by the pressure detection means is a predetermined value.

The pressure at the injection site is controlled to be maintained substantially constant at a sufficient pressure so that the medicinal solution is injected/suctioned. [Example of Length] Hereinafter, embodiments of the present invention will be explained with reference to the drawings. Figures 1 to 3 relate to the first embodiment of the present invention, and Figure 1 shows the configuration of the dissolution treatment device. An explanatory diagram showing , Figure 2 is i1
FIG. 3 is a block diagram showing the configuration of the I11Il means, and is an explanatory diagram regarding the control of the control means. Treatment using the litholytic treatment device is as shown in Figure 1. ? 1 is performed on a living body 2, for example, a human body, in which a coagulum, for example, a stone 5, has formed in a treatment site, for example, a gallbladder 4. The living body 2 is
Located on the treatment table 3, the later-described extroverted sheath 6 of the dissolution treatment device 1 is placed on the treatment table 3, and the extroverted sheath 6 of the dissolution treatment device 1 is lightly inserted into the gallbladder. It is planned to be buried towards I44. One open end of the outer cylinder sheath 6 is inserted into the gallbladder 4 as described above, and a connector 8, which will be described later, is attached to the other open end. A catheter 7, which will be described later, can be inserted into the outer cylinder sheath 6. The dissolution treatment device 1 includes the outer cylinder sheath 6, one end of which is formed so as to be insertable into the outer cylinder sheath 6 as described above, and the other end of which is provided with a collective connector 9, which will be described later. A canal 7 with a main conduit installed therein, and the above=1
Insert the connector 8 and the catheter 7 into the injection tube 1.
1. The connector 9 branching into the suction tube 13 and the pressure conduit 15, and the connector 9 of the annotated pipe 111
A cock 10 provided near the connector 9 of the suction pipe 13, and a click 12 provided near the connector 9 of the suction pipe 13.
and 1. octenoin, octodiol, or 4. A liquid tank 17 containing a medical solution 17a which is a stone dissolving agent such as L-medyl L-butyl ether (MTBE), and a waste liquid tank 19 containing a liquid reservoir 19a containing the chemical solution 17a which is a fluid sucked from the living body 2. , 11t tL person buyup 11 is connected,
An injection bomb 22 for injecting the drug solution 17a into the Jing Kee Shengyu 2
114, the suction tube 13 is connected to the biological body 2.
a suction pump 2 that sucks fluid including the liquid 19a from the
3, and a connector 2 provided at the end of the pressure conduit 15.
0, the connector 20 is connected, and the pressure conduit 15
A pressure detection stage 21 detects the pressure inside the gallbladder 4 and converts it into an electric signal (hereinafter referred to as a pressure signal), and the pressure signal from the pressure detection means 21 controls the injection bomb 22 and the suction bomb 23. Riruffill III :T
; stage 24. The injection bomb 22 is provided with an injection pump head 16, a rotor 16b is pivotally supported on an output shaft 16a which is a drive shaft of a motor (not shown), and rollers 16G are provided at both ends of the rotor 16b. is provided. , a suction pump head 18 is installed on the suction bomb 23 (.i), and this suction bomb head 18
is the output shaft 1/shaft 1 which is the drive shaft of the motor (not shown).
A rotor 18b is pivotally supported at 8a, and rollers 18c are provided at both ends of the rotor 18b.The injection bomb head 16 of the injection bomb 22 is rotated by a motor (not shown) under the control of the control stage 24. [1-1] which is pivotally supported by the output shaft 16a of this motor.
6b rotates, and the rollers 16c installed at both ends of the rotor 16b rotate, and the Kikuki injection tube 11
and press the mulberry liquid 17a in the injection tip 11,
The liquid is injected from the liquid tank 17 through the cock 10, the connector 9, and the force datael 7 into the 11I lit 4 so as to be pushed out. Further, the suction bomb head 18 of the suction bomb 23 is
The tanabata (not shown) rotates under the control of the control means 24, and the rotor 18b, which is connected to the output shaft 18a of the motor, rotates at the same time, and the rollers 18c provided at both ends of the tanabata 18b rotate. While rotating, the suction boo'',
- Press the tube 13 to remove the mulberry liquid 1 inside the suction tube 13.
The liquid 19a containing 7a is sucked out from the 111fi4 through the catheter 7, the 21 connector 9, and the cock 12 to the waste liquid tank 19. Further, the pressure caused by the mulberry juice 17a and the like in the gallbladder 4 is applied to the pressure artefact 7, the connector 9, the cock 14, and the pressure conduit 1.
5 and the connector 20 to the pressure detection means 21. The pressure detecting means 21 converts the pressure within the gallbladder a4 transmitted as described above into an electric signal, and outputs it to the control means 24 as a pressure signal. Said fl. ll control means 24, as shown in FIG. a gain adjustment stage 31 for adjusting the amplification factor of the lJ amplifier 30; an offset adjustment means 32 for setting the pressure offset value of the pressure detection stage 21 in the differential amplifier 30; and an output signal of the differential amplifier 30. an integrator 33 for preventing the award from being applied to the subsequent stage even if there is a change in a predetermined short time (instantaneous); a time constant adjustment means 34 for setting a predetermined time of the integrator 33; A reference voltage source 35 that generates a voltage that is the upper limit reference value of the detected pressure of the pressure detection stage 21, an output adjustment stage 36 that sets the voltage value of this reference voltage source 35, and a reference value for the suction start pressure. a reference voltage source 37 that generates a voltage, and an output adjustment means 38 that sets the voltage value of this reference voltage i1i237.
, the output signal of the integrator 33 and the base voltage source 35
A differential amplifier 39 differentially amplifies the output signal 8 (reference voltage) of
, a gain adjustment means 40 for adjusting the amplification factor of this differential amplifier 39, and the differential amplifier P! A offset adjustment means 41 for setting the offset value of the output signal of 39, and the output fc, J;? A limiter circuit 42 that limits i to not exceed a predetermined voltage 1a, and a switch means for controlling whether or not the output signal of the limiter circuit 42 is output to the injection pump 22. 43 and 1
A differential amplifier 44 that differentially amplifies the signal of y1 base t\ voltage source 35.37 and outputs a-1 signal that controls the rotation speed of the suction pump 23; A gain adjustment stage 45 that adjusts the amplification factor, a limiter circuit 46 that limits the output of the integrator 33 so that it does not exceed a predetermined voltage, and a switch means 48 to be described later is controlled by the U* voltage. A hysteresis comparator 47 compares the signal from the source 37 and the output signal from the divider 33 via the limiter circuit 46 according to a predetermined hysteresis characteristic to control a switch control means 48 to be described later, and the operation of the suction pump 23.・The above-mentioned switch means 48 for controlling stoppage
and the limiter circuit 46 and termination input means 5 to be described later.
A logic circuit 49 which controls the switch means 43 and 48 by a signal of 0, the aforementioned end input stage 49 which performs control to end the treatment, and the pressure detection stage 21. pressure display means 51 for displaying detected pressure;
The offset display means 52 is a 1,000-stage display for adjusting the offset adjustment means 32. The differential amplifier 30 has an input end connected to the pressure adjusting means 21.
The output end of is connected, and the offset adjustment end is connected to the offset adjustment stage 32, and the amplification factor adjustment! ! The end thereof is connected to the gain adjustment means 31 . The integrator 33 has an input terminal connected to the output terminal of the differential amplifier 30, and a time constant adjustment terminal connected to the time constant adjustment stage 34.
It is connected to the. The output adjustment means 36 is connected to the input end of the basic IP voltage source 35, and the output adjustment means 38 is connected to the input end of the basic IP voltage source 37. The first manual end is the integrator 33.
The second manual power end is connected to the output end of the pressure source 35, the amplification'-4X adjustment end is connected to the gain adjustment stage 40, and the offset adjustment stage 40 is connected. ! The end is connected to the offset adjustment stage 41. The limiter circuit/120 input terminal is connected to the differential amplifier 3.
The input end of the switch means 43 is connected to the output end of the limiter circuit 4.
2, and the control terminal is connected to the output terminal of the logic circuit 4.
9, and the output end is connected to the rotation speed control end of the input bomb 22. The i'+it differential amplifier 44 has a first power end connected to the output end of the power supply voltage [35], and a second power end connected to the output end of the power supply voltage 11i.
Connected to the output end of the c sh rx source 37 to notes 1 and 8,
The output end is connected to the IF control end of the suction bomb 23. The input end of the limiter circuit 46 is connected to the output end of the integrator 33. The hysteresis comparator 47 has a first input terminal connected to the output terminal of the reference voltage source 37 and a second input terminal connected to the input terminal of the limiter circuit 46 . The target switch means 48 has an input terminal connected to the output terminal of the hysteresis comparator 47, a control gIlwA connected to the second output terminal of the logic circuit 49, and an output terminal for operating/stopping the classification pump 23. It is connected to the i11111 end. The logic circuit 49 has a first human power end connected to the limiter circuit 4.
6, and a second human power end is connected to the termination input means 50. The input terminals of the pressure display f-stage 51 and the offset display 1,000-stage 52 (which are connected to the output terminal of the droplet circuit 46), the differential amplifier 30 receives the pressure signal 21 from the pressure detection means 21, The offset I!!!! means 32? Offset adjustment of the pressure signal is performed using the off Lt signal, and differential amplification is performed using the amplification factor set in the 荊轻线调节步骤31, in order to remove, for example, the noise component contained in the pressure signal. In addition, the offset minting 1, 1, for example, is performed by the operator using the offset 1 adjustment stage 32 while observing the display on the offset display means 52. The integrator 33 divides the output signal 8 of +14 differential gain 30 by the U. This prevents instantaneous signal level fluctuations from being transmitted to subsequent stages. The differential amplifier 39 uses offset 1 and signal 2 from the off-hit adjustment means 41 to compensate for the zero potential shift caused by the differential amplification.
The offset adjustment is performed by the gain adjustment means 40, and the gain adjustment means 40
The output signal of the Keiki integrator 33 with the amplification factor set by the above! The output voltage of the 4 quasi-voltage source 35 is increased by a difference e. Further, the output voltage of the reference voltage source 35 is controlled by the output adjustment means 36, and becomes a signal indicating the upper limit pressure. The limiter circuit 42 limits the output signal of the differential amplifier 39 by υ1 so that it does not exceed a predetermined upper limit. The switching means 43 controls the control signal g of the logic circuit 49.
t determines whether or not the output signal of the limiter circuit 42 is output as a rotation speed control signal to the injection pump 22.
Il1lg. The differential amplifier 44 uses the amplification factor set by the gain wJ adjusting means 45 to obtain the output voltage of the reference voltage source 35 and the base t\=voltage it! The output voltage of 37 is differentially amplified. Further, the output voltage of the base single voltage source 37 is controlled by the output W4 adjusting means 38, and becomes a signal indicating the suction start pressure. The output signal of the differential amplifier 44 is outputted as the rotational speed control signal i} of the bow bomb 23. The limiter circuit 46 is configured to limit the output signal of the integrator 33 so that the circuit (means) at the subsequent stage does not malfunction, which is No. 15. The hysteresis converter 47 compares the output voltage of the reference voltage source 37 and the output signal of the limiter circuit 46, and outputs the comparison result at a predetermined hysteresis ratio. . The switch means 48 controls the logic circuit 49 {+
r j'3, the hysteresis comparator 47
Operation/stop a- of the output A1 to the suction pump 23
It is designed to determine whether or not it will be output as 1 Goshin 7J. The logic circuit 49 outputs the output of the limiter circuit 46 {r
+ By S'E, if the pressure inside the gall/ik J passes through the suction pressure (oral force), Kikuki Suitsubu 1,000 steps
! I8 controls the switch f means 48 1-1 so as to output the output signal of the hysteresis comparator 47 as the operation g S3 to the suction pump 23, and
When the internal pressure reaches the suction stop pressure, the switch means 48 is controlled so as not to output the output signal of the Senki hysteresis converter 47 as an operation signal to the suction pump 23. However, when the pressure inside the gallbladder 4 abnormally increases, the switch means/13 is configured to prevent the switch 43 from outputting the output signal of the limiter circuit 42 as a rotation speed control signal to the injection pump 22. The switch means also controls the end signal input from the end input means 50 so that the switch f stage 43 does not output the output signal of the limiter circuit 42 as a rotational speed control signal to the injection pump 22. 43. The termination input stage 50 is, for example, a switch, and is configured to operate each part of the dissolution treatment device i''?1 so that the treatment (treatment) is completed when the operator operates this switch. The pressure display means 51 is adapted to display the pressure within the bile collapse 4 detected by the pressure detection stage 21 from the output signal of the limiter circuit 46. The offset 1 and 1,000 stages 52 correspond to the limiter circuit 4.
From the output signal of 6, detected by the pressure detection stage 21 +) na fin +7! 4, the operation name is displayed to facilitate offset adjustment by the offset adjustment stage 32. The operation of the dissolution treatment device configured as described above will be explained. As shown in FIG. 1, the pressure caused by the chemical liquid 17a, etc.
The pressure is transmitted to the pressure detection means 21 via the pressure control 14, the pressure conduit 15, and the connector 20, and is converted into an electrical signal by the pressure detection stage 21, and the pressure signal is transmitted to the control 11I as a pressure signal.
It is manually powered to the f stage 24. As shown in FIG.
The i-bow is offset-adjusted by the differential amplifier 30, noise components, etc. are removed by the differential amplifier 30, and the signal is differentially amplified to a predetermined signal level. Furthermore, the output signal of the differential amplifier 30 is the integral v!
: Instantaneous signal level fluctuations are absorbed by i33,
It is input to the first power terminals of the three differential amplifiers. A reference voltage indicating the upper limit pressure from the reference voltage source 35 is input to the second power end of the difference e amplifier 39, and Ll3
The differential amplifier 39 receives the pressure signal 8, which has been subjected to various processes by the differential amplifier 30 and the integrator 33, which are inputted to the first input terminal, and the H signal inputted to the second input terminal.
t7. Outputs signal 3 corresponding to the difference with the voltage. In this way, the upper limit of the signal output from the differential amplifier 39 is limited by the limiter circuit 42 and is output to the injection bomb 22 via the 1,000-stage switch 43. The limiter circuit 42 prevents the injection rate (pressure) of the mulberry liquid 17a from imparting IQl to the bile 114.
Further, the upper limit of the injection speed (pressure) of the drug solution 17a by the injection bomb 22 is set so as to prevent the liquid droplet 19a from leaking to areas other than the bile fluid 4. Furthermore, the differential amplifier 44 indicates the upper limit pressure of the reference voltage source 35 at the first power terminal. The J base quasi voltage is input, and the second
The reference voltage (heavy pressure) indicating the suction m1 starting pressure of the Lt quasi-electric sweat source 37 is inputted to the human power end, and the reference voltage input to the first and second human power ends is differentially amplified. 23. Furthermore, the ffl reference voltage source 37 outputs a signal whose range of the reference signal level is limited by the limiter circuit 46, and a signal inputted from the reference voltage source 37. When compared with the 13th quasi-electric cathode, which shows the clam pressure during suction, the comparison result is given a predetermined hysteresis characteristic and output as operation/stop control {j'j. The suction stop force is set by the hysteresis special bamboo. The aforementioned operation/stop control III signal is output to the suction bomb/I8 via the switch means 48. Detection by the pressure detection means 21 The pressure is displayed by the pressure display means.The pressure detected by the pressure detection stage 21 for the offset WJv by the first offset adjustment stage 32 of the differential amplifier 30 is displayed by the offset display means 52. The above-mentioned action will be explained with reference to FIG. The same rotation number of
FIG. 3(C) shows the rotational speed of the suction bomb 23 in chronological order. When treatment A (treatment F?) is started, the injection bomb 22
The rotational speed [i, the pressure in the gallbladder 1#4 and the upper limit pressure J
Since there is a large difference between the two, it rotates at high speed. Therefore, ^7
The mulberry liquid 17a is injected into the gallbladder 4 at an upper limit pressure that does not cause any harm to the gallbladder 4. At this time, the pressure inside the biliary tract 4 has not reached the suction start pressure (target) pressure, so the chrysanthemum suction pump 23 does not operate. As the injection of the drug solution 17a further progresses and the pressure within the gallbladder 4 gradually increases, the rotational speed of the injection bomb 22 gradually decreases. Therefore, the injection pressure of the chemical solution 17a also gradually decreases. When the pressure inside the gall fj 4 reaches the suction start pressure (target pressure), the suction bomb No. 23 starts rotating at a predetermined rotation speed as described above. The liquid reservoir 19a is suctioned at a predetermined pressure, but the medical liquid 17a is also injected at the same pressure, and the G:L medical liquid 178 flows far away in the gallbladder 4.
The dissolution of 11 stones 5 is promoted. Here, if the pressure inside the gallbladder 4 exceeds due to movement of the above-mentioned 2, the gallbladder should be adjusted so that the fV force in the 4 does not reach the pressure in the 1st eye. The rotational speed of the pump 22 is controlled to further decrease. As a result, the pressure within the III sac 4 begins to decrease.
The number of revolutions of the injection bomb 22 is
Due to this increase in rotational speed, the pressure J in the 11 fl bag 4 decreases, and when the suction stop pressure is reached, the suction bomb 23 stops and only the injection bomb 22 operates. As a result, the month two in Jingji 11Etfi/l rises, and the II1! When the pressure in I4 reaches the suction start pressure (target pressure), the suction pump 23 operates again. For example, even if the suction tube 13 is clogged or the suction bomb 23 is stopped, the 111-
] When the pressure inside the gallbladder 4 increases, the rotation speed of the injection pump 22 is controlled to further decrease so that the pressure inside the gallbladder 4 does not reach the upper limit pressure,
Even if the rotation speed decreases, the force within the 1° &/I will increase. When the injection bomb 22 is turned off, the rotation speed of the injection bomb 22 becomes zero, that is, it stops. Further, when the termination of the injection pump 22 is instructed by the termination input means 50 in step 114, the injection pump 22 is stopped, and the pressure inside the gallbladder 4 is reduced by the suction bomb 23t. The liquid i9a containing the medicinal liquid 17a moves until the pressure reaches the pressure at which the treatment is started, and stops when the pressure reaches that pressure. Therefore, the liquid i9a containing the medicinal liquid 17a is
In other words, with a simple configuration, the injection speed and suction operation of the medicinal solution can be controlled according to the pressure of the treatment site, for example, llj W 4. FIG. 4 is a block diagram showing the configuration of the control means according to the second embodiment of the invention.The configuration of the dissolution treatment device is the same as that of the first embodiment, and Components similar to those in the above-mentioned embodiment will be designated by 11I1-, and their explanation will be omitted. An output switching stage 53 for switching the control signal and a second rotation number I of the suction bomb 23
A vVδ pressure source 54 that generates the III signal and an output adjustment step 5 that adjusts the signal level of this base voltage source 54 [3].
5 is provided. The output switching means 53 has a first terminal connected to the output terminal of the differential amplifier 44 described in the first embodiment, and a second terminal connected to the output terminal of the single voltage source 54. ing. The above is also {Bu. An output adjusting means 55 (6r+) is connected to the input end of the voltage source 54. The third output terminal of the logic circuit 49 described in the first embodiment is connected to the control terminal t1l of the output switching stage 53. The logic control circuit 49 controls the output switching stage 53 when the pressure in the 7111-ii d from the limiter circuit 46 exceeds a predetermined value. . The output switching stage 53 receives the control signal of the logic circuit 54 and switches the rotational speed υJllll signal to the suction bomb 23 from the output signal of the differential amplifier 44 to the output signal of the simplified reference voltage source 54. It looks like this. Said base rI! The output signal of the voltage source 54 is adjusted by the output adjustment stage 55 so as to increase the rotation speed of the suction pump 23 compared to the output signal of the differential amplifier 44. . The operation of the control means configured in this way will be explained. The logic circuit 49 detects, for example, by an internally installed converter, that the pressure within the bile Yt4 has suddenly increased, and the output switching means 53 switches the v. vz pressure source 5/I
υ1 is controlled so that the output signal is outputted as the rotational speed ft of the suction bomb 23 and the IJ control signal. Thereby, the suction pump 23 is connected to the reference voltage source 5.
It rotates at a faster speed than normal, which is set by the output signal of 4, and can reduce the pressure in the gallbladder 4 very quickly. That is, the pressure exerted by the liquid 19a does not cause damage to the treatment site, for example, the gallbladder 4, so that safer treatment can be performed. Other configurations, functions, and effects (same as those of the above-mentioned embodiment) are present. FIG. The structure is the same as that of the first embodiment, and the same reference numerals are used for the same components as in the first embodiment, and the explanation thereof will be omitted. A limiter is installed to prevent the number of revolutions of 23 from deviating from the specified range.
6 is provided. 51 of the differential amplifier 44 explained in the first embodiment.
The input end of the integrator 33 is connected to the human power end, the input end of the limiter circuit 56 is connected to the output end of the differential amplifier 44, and the output end of the limiter circuit 56 is connected to the rotation speed of the suction pump 23. The control terminal is connected to the control terminal. The differential amplifier 44 receives the output signal of the integrator 33 inputted to a first input terminal, and the ilt\. A signal corresponding to the difference with the signal from the voltage source 37 is output. The limiter circuit 56 limits the output signal 0 of the differential amplifier 44 so that the rotational speed of the suction pump 23 does not deviate from a predetermined range. The operation of the control means configured in this way will be explained. The second input end of the differential amplifier 44 is connected to the base t! /-
A reference voltage indicating the suction start pressure is input from a voltage source 37, and the differential amplifier 44 is subjected to various processing by the differential amplifier 30 and the integrator 33, which are input to the first human power terminal. A signal corresponding to the difference between the pressure signal and the base voltage input to the second human power terminal is output. In this way, the signal jj output from the differential amplifier 44
l. i. It is limited by the limiter circuit 56 so as not to deviate from a predetermined range, and is output as the rotation speed control {3{} of the suction pump 23. That is, the rotation speed of the suction pump 23 also changes depending on the pressure inside the treatment area, for example, the gallbladder, so that the pressure inside the gallbladder 4 is not rapidly reduced, and the negative {U If <l
It has the advantage of being able to perform a variety of treatments.Other configurations, actions, and effects are also similar to the length embodiment described above.Figure 6 shows a fourth embodiment of the present invention. 1 is an explanatory diagram showing the structure of the dissolving treatment device 4 according to the example.The configuration of the control means is the same as that of the above-mentioned embodiment, and 1. 1 The same symbols [ ] will be used to omit the explanation.The dissolving M?therapy device of this embodiment emits ultrasonic waves to the dissolution therapy device 2T1 of the button 1 embodiment and further to the above-mentioned l1 source 4. An ultrasonic generator 60, an ultrablind wave transducer drive circuit 35 that drives the ultrasonic one-wave generator 60, and an ultrasonic generator for detecting the condition of the gallbladder d4 using ultran waves. P-O-bu 64 and
The ultrasonic observation device 67 drives and controls the ultrasonic wave probe 64. The ultrasonic generator 60 includes an ultrasonic transducer 61 that generates ultrasonic waves, a water bag 62 that can stably transmit the ultrasonic waves generated by the ultrasonic transducer 61 to the living body 2, and an ultrasonic transducer 62 that generates ultrasonic waves. The ultrasonic probe holder 63 holds a probe 64. A monitor 68 is installed inside the ultrasonic observation device 67. The ultrasonic transducer drive circuit 65 has a control wJ end connected to the control υ.
11 is connected to the means 65, and the output end is connected to the ultra-high wave vibration level 6.
Connected to 1. The water bag 62 has one end surface in contact with the ultra-8-wave vibrator 61, the other end surface in contact with the living room 2, and is filled with an acoustic transmission medium such as water. The ultra 8 wave blow 764 is detachably held by the ultrasonic probe holder 63, and is attached to the ultrasonic observation device Vi 6.
7 is connected. The ultra-high wave vibration driving circuit 65 is controlled by the control means 24 to drive the ultra-high wave oscillator 61. The ultrasonic wave observation device 6
7, and the substantially fan-shaped observation range 9j1 of the living day 2
Ultrasonic waves are emitted to the living body 2, and the ultrasonic waves are reflected by various parts of the living body 2, and the countermeasure signals are received. The ultrasonic wave probe 8I Ft67 is equipped with the ultrasonic probe 6.
In addition to driving the ultrasonic processor 164, the anti-false report received by the ultrasonic processor 164 is displayed as an image on the screen of the monitor 67, for example. The action of the melting metal VX constructed in this way will be explained. The control stage 24 has mulberry liquor 17a in Jingji IIlR/I.
When it becomes full and starts flowing, it goes to the ultrasonic vibrator drive circuit 65! Output 11111 Shingetsu. The ultra&wave resonator drive circuit 65 is the above-mentioned itiQI
The ultrasonic transducer 61 is driven by the II signal to emit ultrasonic waves. The ultrasonic waves emitted from the ultrasonic transducer 61 are transmitted into the living body 2 by the water heater 62 in a manner similar to that of a person. The ultrasonic waves entering the living body 2 vibrate the [1114] and further promote the dissolution of the gallstones 5. Further, the situation inside the sac 4 is determined by the ultrasonic observation neck 67.
The ultrasonic probe 64, which is driven and controlled, displays the gallstones 4' and gallstones 5' on the monitor 68 of the ultrasonic observation device 67. a3, ultrasonic wave generator 60 and ultrasonic transducer drive circuit 6
5 and the ultra-G wave measurement equipment 67 may be used separately. That is, the vibration of the ultrasonic waves causes the coagulum, for example, til1
This has the effect that the dissolution of the stone 5 is promoted, and the situation of the treatment area of the patient 2, for example, the 1st bag 4, can be grasped one by one. Other configurations, operations, and effects are the same as those of the embodiments described above. In addition, the control means i and II may be a control means using a microprocessor or the like, a control means using a logic circuit, or a combination of both, and one or both of them and a differential amplifier. The control means may be a combination of control means using fuzzy inference.
l means may be used. [Effects of the Invention] As explained above, according to the present invention, the injection speed and suction of the medicinal solution can be adjusted without worrying about the pressure of the treatment area! ! It is possible to control lfi, extremely safe, and provide treatment with increased dissolution efficiency of coagulum by keeping the pressure of the treatment area approximately constant and flowing mulberry juice. There is a monkey effect.

[Brief explanation of drawings]

1 to 3 relate to the first embodiment of the present invention, FIG. 1 is an explanatory diagram showing the configuration of the dissolution treatment device, FIG. 2 is a block diagram showing the configuration of the control means, Figure 3 is 1, II a
FIG. 4 is a block diagram showing the configuration of the control means according to the second embodiment of the present invention, and FIG. 5 is a diagram showing the configuration of the control means according to the third embodiment of the present invention. A block diagram showing the configuration of the control means, and FIG. 6 are explanatory diagrams showing the configuration of the dissolution treatment apparatus according to the fourth embodiment of the present invention. 1...Dissolution treatment device 24...i, II control means

Claims (1)

[Scope of Claims] A drug solution injecting means for injecting into the living body a drug solution that dissolves coagulum in the living body; a fluid suction device for sucking a fluid containing the drug solution from the living body; and an injection site for the drug solution. pressure detection means for detecting the pressure of the liquid medicine injector; variably controlling the injection amount by the chemical liquid injection means to an amount corresponding to the pressure detected by the pressure detection means; and controlling the fluid suction means so that the pressure detected by the pressure detection means is a predetermined value. 1. A dissolution treatment device comprising: control means for controlling the pressure at the injection site to be operated when the pressure is exceeded, and for controlling the pressure at the injection site to be maintained substantially constant.