JPH05203Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an ultrasonic dialysis device that performs dialysis while transmitting ultrasonic waves into a dialysis tank.

[Prior art] A device that purifies the sol inside the membrane by placing a sol mixed with various low molecular weight solutes inside a semipermeable membrane, immersing it in a solvent, and diffusing the low molecular weight solutes outside the membrane. A dialysis apparatus is well known, and FIG. 4 shows a conventional dialysis apparatus for performing artificial dialysis of blood.

Inside the cylindrical dialysis tank 10, a large number of thin tubes 14 made of a semipermeable membrane material and whose ends are attached to the dialysis tank caps 12a and 12b are loaded (for convenience, only five tubes are shown). Upper dialysis tank cap 1
2a is provided with a blood supply pipe 16 for supplying blood to the semipermeable membrane capillary 14 in the dialysis tank 10, and the dialysis tank cap 12b on the lower side of the dialysis tank 10 is connected to the dialysis tank cap 12a.
A blood discharge pipe 18 is provided for discharging blood that has undergone dialysis treatment.

A dialysate supply pipe 20 for supplying dialysate, which is a solvent, into the dialyzer 10 is provided on the upper side of the dialyzer 10, and a dialysate supply pipe 20 is provided on the lower side of the dialyzer 10.
A dialysate discharge pipe 22 is provided for discharging the dialysate and unnecessary substances in the blood that have permeated through the semipermeable membrane thin tube 14.

That is, in the conventional hemodialysis apparatus described above, blood is supplied from the blood supply pipe 16, and the supplied blood passes through each semipermeable membrane thin tube 14 in the dialysis tank 10 filled with dialysate. While passing through this semipermeable membrane tubule 14, unnecessary substances in the blood are transferred from the semipermeable membrane tubule to the dialysis tank 10.
The blood that has been purified by the permeation of unnecessary substances is discharged from the blood discharge pipe 18.

[Problems to be Solved by the Invention] According to the conventional dialysis device (hemodialysis device) described above, it takes a long time (about 5 hours) to dialyze blood. As this requires a long processing time, people who have to undergo dialysis treatment two or three times a week, such as patients with chronic renal failure, end up having to spend a lot of time on treatment. There was a problem.

Purpose of the invention The present invention was created in view of the above-mentioned problems, and its purpose is to provide an ultrasonic dialysis device that can accelerate the dialysis action in the dialysis tank and perform dialysis treatment efficiently and in a short time. It's about doing.

[Means for Solving the Problem] In order to achieve the above object, the ultrasonic dialysis device according to the present invention includes a dialysis tank that performs dialysis treatment inside,
A plurality of transducers distributed around the periphery of the dialysis tank and transmitting ultrasonic waves into the dialysis tank; a transducer drive circuit that supplies drive signals to the plurality of transducers; a vibrator switching section having a switch circuit for switching on/off the supply of drive signals to the vibrators; and a switch control circuit for controlling the on/off of the switch circuit and enabling selective supply of drive signals to each vibrator; It is characterized by including.

[Effect] According to the present invention, when dialysis treatment is performed while irradiating the inside of the dialysis tank with ultrasound, the dialysis action inside the dialysis tank can be enhanced compared to when the treatment is performed without irradiating ultrasound. According to the ultrasonic dialysis apparatus according to the present invention, the plurality of transducers distributed around the dialysis tank are driven by drive signals from the transducer drive circuit. Ultrasonic waves are transmitted inside the dialysis tank. The supply of drive signals to each vibrator can be selectively switched by controlling the switch circuit by the switch control circuit.

This makes it possible to uniformly transmit ultrasonic waves into the inside of the dialysis tank without bias, and it is possible to more effectively enhance the dialysis action by ultrasonic vibrations.

[Example] FIG. 1 is a schematic perspective view showing an example in which the ultrasonic dialysis device according to the present invention is used in a hemodialysis device, and details of the dialysate supply pipe, dialysate discharge pipe, etc. will not be explained. For convenience, illustration thereof is omitted.

Elements similar to those of the conventional hemodialysis apparatus shown in FIG. 4 are given the same reference numerals and their explanations will be omitted.

The characteristic feature of the present invention is that a plurality of transducers for transmitting ultrasonic waves into the inside of the dialysis tank 10 are arranged around the outer circumference of the dialysis tank 10. In this embodiment, four transducers are provided. 24a, 24b, 24c, 24
d are attached to the outer wall of the dialysis tank 10 in a distributed manner in all directions.

FIG. 2 shows the circuit configuration of the above embodiment, in which a vibrator drive circuit 26 that supplies drive signals to each vibrator is connected to the four vibrators 24a to 24d via a vibrator switching section 28. has been done.

The vibrator drive circuit 26 includes an oscillator 30 that transmits a vibrator drive signal and a power amplifier 32 that amplifies the output from the oscillator 30.

The vibrator switching section 28 is the vibrator drive circuit 2
A switch circuit 34 for switching on/off the supply of drive signals from 6 to each of the vibrators 24a to 24d.
and a switch control circuit 36 that performs switching control of four switches 34a, 34b, 34c, and 34d that constitute this switch circuit 34. The switches 34a to 34d are connected to the transducers 24a to 24d, respectively, and when the switches 34a to 34d are turned on, the transducers 24a to 24d transmit ultrasonic waves.

Next, the operation of this embodiment will be explained.

During the dialysis process, the vibrator drive circuit 26
A vibrator drive signal is constantly outputted to the switch circuit 34, and when each switch of the switch circuit 34 is turned on, the drive signal is supplied to the vibrator. Each of the switches 34a to 34d of the switch circuit 34 is controlled on and off by a switch control circuit 36. This on/off control is preferably controlled so that ultrasonic vibrations are not locally applied, and for example, switching control is performed in which the switches 34a to 34d are sequentially turned on one by one at predetermined time intervals. Thereby, each of the transducers 24a to 24d sequentially transmits ultrasonic waves into the dialysis tank 10 one by one.

Therefore, the ultrasonic waves can be evenly transmitted into the dialysis tank 10, increasing the efficiency of the dialysis action and shortening the dialysis treatment time. In the case of this embodiment, 5 hours are shortened to about 3 hours.

In the above embodiment, the vibrator 24 is connected to the dialysis tank 1.
Although we have shown a case in which four pieces are attached to the outer periphery of 0, distributed in all directions, it is of course not limited to four pieces; for example, they may be arranged in two rows as shown in Figure 3. is also possible.

Further, the arrangement of the vibrator 24 is not limited to pasting, and it is also possible to embed it in the peripheral wall of the dialysis tank 10, for example. Furthermore, it is also possible to arrange the vibrator 24 at a constant distance from the dialysis tank 10.

Each switch 34a by the switch control circuit 26
The on/off control in ~34d is not limited to turning on each vibrator one by one, but if the control is to prevent the local transmission of ultrasonic vibrations, for example, the on/off control of two adjacent vibrators can be turned on one by one. It is also possible to perform control such that the switch is turned on.

[Effects of the invention] As explained above, according to the ultrasonic dialysis apparatus according to the invention, ultrasonic waves can be uniformly transmitted into the dialysis tank without bias, and the efficiency of dialysis action in the dialysis tank can be improved. improvement can be achieved. This makes it possible to shorten the dialysis treatment time.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view showing an embodiment of the ultrasonic dialysis apparatus according to the present invention, FIG. 2 is a circuit diagram of the embodiment, and FIG. 3 shows another arrangement pattern of the transducers. The schematic perspective view shown in FIG. 4 is an explanatory diagram of a conventional hemodialysis apparatus. 10... Dialysis tank, 16... Blood supply tube, 18...
... Blood discharge tube, 24 ... Vibrator, 26 ... Vibrator drive circuit, 28 ... Vibrator switching section, 30
...Oscillator, 32...Power amplifier, 34...Switch circuit, 36...Switch control circuit.

Claims (1)

[Scope of Claim for Utility Model Registration] A dialysis tank that performs dialysis treatment inside the dialysis tank, a plurality of vibrators that are distributed around the periphery of the dialysis tank and transmit ultrasonic waves into the inside of the dialysis tank, and the plurality of vibrations. A vibrator drive circuit that supplies a drive signal to each vibrator, a switch circuit that turns on and off the supply of drive signals from the vibrator drive circuit to each vibrator, and a switch circuit that controls on and off the switch circuit to each vibrator. An ultrasonic dialysis apparatus comprising: a transducer switching section having a switch control circuit that enables selective supply of drive signals.