JPS58109046A - Electric stone crusher - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention is applicable to, for example, urinary tract stones and cyst stones.

Electrolithotomy 1, which crushes stones such as gallstones using discharge shock waves
fiffiKII.

In general, this woodcutter's electrolithotomy device! A spark discharge is created by applying a direct current voltage between minute electrodes that can be introduced into the body by a lobe, and the resulting shock wave breaks up the calculus, or a spark discharge is performed between the electrodes. However, the electrodes were easy to wear out. Therefore, during the treatment, discharge frequently occurs and the electrode must be replaced with a new one. In this case, the treatment time becomes unnecessarily long and the situation becomes difficult for both the operator and the patient.

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to provide an electrolithotomy apparatus which is capable of preventing the situation in which the discharge stops during the operation by knowing the life of the electrode for line discharge in advance. To provide KToru.

Hereinafter, one embodiment of the present invention will be described with reference to the t-plane.

1 in Figure 1 is a DC power supply, and this DC power supply JKFia
Anti 2. A capacitor 4 is connected in parallel via switch 3'. A contact 6.6 is connected in parallel to the capacitor 4 via a switch discharge tube 6, and this contact 6.6 has two
A series circuit consisting of voltage dividing resistors 1.1 follows.

The voltage dividing point between the voltage dividing resistors 7 and 80 is connected to the input terminal of the comparator. Comparator III
I side input terminal line reference voltage tW & added battery I Jo11
1iKl! Alretai! . The negative electrode of the DC power supply 1 is connected to the output terminal of the e-conductor bandlator connected to one input terminal of the buffer J2 via the diode 10, and the output terminal is connected to one input terminal of the buffer J2 via the diode 10. 'i is connected to the negative electrode of the DC power supply 1.

The output end of the buffer 12 is connected to a resistor 14 and a light emitting diode 1j.
The negative terminal KIl of the power supply 1 is connected through a series circuit consisting of the above-mentioned power supply 1 and a sound generation circuit 11 in parallel.

On the other hand, 2Q is a timing control circuit, and the switch drive circuit IJ is controlled by the output signal of this timing control circuit 20.
The switch 3twAa can be operated by the user. Further, the output signal of the timing control circuit jO is used to operate the trigger voltage generation circuit 11f to trigger the switch discharge tube 5.

In addition, the contact point 14 of the glove 11 and Confucius is attached to the 6th and 1-
．． 14 are now connected.

This loaf 23 is provided with a discharge electrode JIS, 1B which is electrically connected to the contacts 24, 24.

Next, the operation of the electrolith crusher having the above configuration will be explained.

First, when a discharge command control signal is input to the timing control circuit 20, the switch drive circuit 21 is driven, and the second
A pulse signal shown in Fig. 1) is generated and switch J is closed. Therefore, the capacitor 4 is supplied with power from the DC power source 1 through the resistor 2, and is photoelectrically charged as shown in FIG. 2 (c). Next, the timing control circuit 20 generates a trigger drive signal as shown in (b) in FIG. ...1" The electric tube 5 discharges and becomes conductive. Therefore, a voltage is applied between the contacts 6 and 6 as shown in (e) in Fig. 2. Then, the discharge electrode: J5.2B If the voltage between them exceeds the voltage value, the insulation between them will be damaged (@2)
Discharge occurs with the waveform shown in . At this time, when the discharge intelligence wave is activated and the stone is used for a long time, the electrode ss,
xs, especially when the anode side is worn out and the interval becomes wider, the discharge-initiating voltage gradually becomes higher, and soon the discharge stops.However, in the present invention, the voltage @Axs with a resistance of 1.8,
The voltage applied between xs is divided, and the voltage at the dividing point is compared with the set voltage of the comparator hook 11. The set voltage value of the battery 11 is the electrode as, 2
It corresponds to the voltage value before it becomes impossible to discharge between s. In Figure 1I2, the left side shows the case where the discharge starting voltage is low, and the right side shows the case where the discharge starting voltage is high. Therefore, when the electrodes r and v are worn out and the interval becomes wider, there is a possibility that they will not discharge during treatment, and the voltage at the voltage dividing point will become higher than the voltage of the battery 11. Then.

The condenser/crater 9 outputs a voltage as shown by (f) in Fig. 182, and the capacitor J3
ij charge. The voltage of this capacitor 13 is received by the buffer 12, and the output of the waveform shown in (G) in FIG.
The light emitting diode Jjt is turned on via the resistor 14, and the sound generation circuit 1'/ is driven. This stain pole 25
．． 25 is exhausted and there is a risk that it will stop discharging during treatment. Therefore, it is known in advance whether the electrodes xs, zst - need to be replaced with new ones.

Note that the present invention is not limited to the above embodiments. For example, the voltage and electrode of capacitor 4 are used to detect the discharge starting voltage! ,5. Since the voltage difference between Jj and Jj is the voltage across the switch discharge tube 5, the measurement may be made from both ends of the switch discharge tube 5. Furthermore, electrodes! , 5
, 25 opens, the voltage at the end of discharge increases, so the voltage of the capacitor 4 may be measured.

In addition, in addition to providing a double layer of comparators for detecting the voltage applied between the electrodes 2s and as, the reference voltages of the respective controllers and armatures 9 are set to different values,
The display St may be provided accordingly.

As explained above, the present invention detects the degree of damage to seven electrodes based on the magnitude of the discharge starting voltage between the discharge electrodes,
It is designed to issue an alarm when the electrode is damaged beyond a certain level. Therefore, if there is a risk that the electrode will wear out and no longer discharge during the procedure (known in advance), the electrode can be replaced with a new one. This prevents accidents in which the discharge stops during surgery, and can be used with peace of mind.

[Brief explanation of drawings]

Drawing lines show one embodiment of the present invention, FIG. 1 is a schematic electrical diagram thereof, and FIG. 2 is a waveform diagram. 1... [Ell power supply, 4... Capacitor, 6...
Contact, 1.8... Voltage dividing resistor 1g... Comparator, 16... Light emitting diode, 11... Sound generation circuit, 2
J...Glove, XS...For discharge and electrode.

Claims (1)

[Claims] *In the TLL, there is a means for detecting the degree of damage depending on the magnitude of the discharge starting voltage between the electrodes for discharge, and an alarm that issues an alarm according to the command of the above means when the damage to the electrode becomes more than one foot. An electrolithodesis device characterized by comprising: means.