JPH0482569A - Bone healing promoter - Google Patents

Abstract

PURPOSE:To achieve a formation of a temporary bone and a healing of a bone in a short time by including a feeder electrode connected to one output end of a high frequency generator and a plurality of receiving electrodes connected to the other output end of the high frequency generator to accomplish a concentration of an electric stimulation energy on a broken part of a bone. CONSTITUTION:A selection switch 3 is set to an automatic position to set a selection part 7 according to a broken part of a bone. Then, a feeder electrode 6A and receiving electrodes 6B1-6Bn are arranged on the skin of the broken part of the bone according to an arranging pattern of a memory section 4. Then, by closing a treatment starting switch to an ON position, a control section 2 reads a set position of the selection switch 3 to judge whether an automatic or manual mode is given. Then, a high frequency is applied to the receiving electrode 6A and the receiving electrodes 6B1-6Bn separately. Then, when a manually setting section 5 is used, the control section 2 judges the manual mode from the set position of the selection switch 3 and values of variable resistors set at the manually setting section 5 are read at a sampling cycle. Then, based on the set values of the variable resistors, a high frequency is applied to the feeder electrode 6A and the receiving electrodes 6B1-6Bn.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a bone union promoting device that promotes union in bone fracture treatment.

``Prior Art'' Traditionally, bone union promoting devices used for fracture treatment include direct current electrical stimulation, alternating current electrical stimulation, and pulsed electromagnetic field stimulation (P E M F s;
ctr.

Magnetic F leds) method or capacitive induction (CCE F: capacitively co
A method based on the "upled electric field" method has been developed.

Bone union promoting devices using direct current electrical stimulation and alternating current electrical stimulation involve inserting two electrodes near the fracture site and passing a current between them, while bone healing promoting devices using pulsed electromagnetic field stimulation method , a pulsed electromagnetic field is irradiated from outside the body toward the fracture site to generate an induced current in the fracture site. In addition, a bone healing promoting device using a capacitive induction method involves attaching two electrodes to the skin surrounding the fractured part, sandwiching the fractured part, and applying high frequency waves between these electrodes.

[Problems to be Solved by the Invention] Among the conventional bone fusion promoting devices described above, those using the direct current stimulation method and the alternating current stimulation method do not require direct insertion of electrodes into the living body as described above. Therefore, it has the advantage that electrical stimulation energy can be concentrated at the fracture site. However, since the electrode is inserted into the living body, it has the disadvantage of causing physical pain. On the other hand, the pulsed electromagnetic field stimulation method and the capacitive induction method do not require the insertion of electrodes into the living body, so they have the advantage of reducing the burden on the patient. However, it has the drawback that it is difficult to efficiently concentrate electrical stimulation energy on the fracture site, and it takes a considerable period of time for temporary placement and bone union.

This invention was made in view of these circumstances,
The object of the present invention is to provide a bone growth promoting device that is non-invasive and allows temporary placement and bone union in a short period of time.

"Means for Solving the Problem" In the invention according to claim 1, in a bone fusion promoting device comprising a high frequency generator, a power feeding electrode connected to one output end of the high frequency generator; It is characterized by comprising a plurality of power receiving electrodes connected to the other output end of the high frequency generator.

Further, in the invention set forth in claim 2, the configuration of the invention set forth in claim 1 is further provided with an output level variable means that can individually vary the output level between the power feeding electrode and each power receiving electrode. It is characterized by

In addition, in the invention set forth in claim 3, the structure of the invention set forth in either claim 1 or claim 2 includes a power feeding electrode determined based on bioimpedance in each part of the human body and each power receiving electrode. It is characterized by comprising a storage means in which the output level between each of the electrodes is stored, and a reading means for reading out the data stored in the storage means.

"Operation" According to the above configuration, by providing a plurality of power receiving electrodes for the power feeding electrode, each power receiving electrode can be arranged so as to percutaneously surround the fractured part with the power feeding electrode as the center. Therefore, electrical stimulation energy can be effectively concentrated on the fracture site.

In addition, since the output level between the power supply electrode and each power receiving electrode can be individually varied by the output level variable means,
It is possible to correct the unbalance of electrical stimulation caused by the difference in bioimpedance due to the difference in the arrangement of each power receiving electrode.

Furthermore, by providing a storage means in which the output level between the power supply electrode and each power receiving electrode in each part of the human body is stored, and a readout means for reading out the data stored in this storage means, the above-mentioned The optimum output level for each part of the human body is automatically set without adjustment by the output level variable means.

"Embodiments" Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic diagram showing a bone fusion promoting device according to an embodiment of the present invention. It should be noted that the bone fusion promoting device in this example is one to which the above-mentioned capacitance induction method is applied.

In this figure, 1 is a high frequency generator, 60KHz
The output level can be arbitrarily adjusted within the range of 25 to 10 Vp,p. Moreover, the frequency can also be changed arbitrarily. Reference numeral 2 denotes a control unit, which includes a CPU (central processing unit), a ROM (read only memory), a ROM (random access memory), an interface, a multiplexer, etc. (not shown). A program for controlling the CPU is written in the ROM. When a treatment start switch (not shown) is turned on, this control unit 2 reads the output of the selection switch 3 according to a program written in the ROM,
Based on the set value, either the storage section 4 or the manual setting section 5 is selected and its output value is read. Then, based on the read output value, the power feeding electrode 6A and the power receiving electrode 6B,
It has a function of adjusting the output level between each of .about.6Bn. The storage unit 4 stores the output level (data) between the power feeding electrode and each power receiving electrode determined based on the bioimpedance of each part of the human body, and each data is selected by the selection unit. It is done by 7. On the other hand, the manual setting unit 5 includes a power feeding electrode 6A, each power receiving electrode 6B,
It is possible to manually adjust the output level between each of the power receiving electrodes 6B and 6Bn, and as many variable resistors as there are for each power receiving electrode 6B and 6Bn are provided. Here, the reason why the storage section 4 and manual setting section 5 are provided is as follows. That is, when applying high frequency to a fractured part through the skin, fat, muscle, etc. of human tissue, the power feeding electrode 6A, the power receiving electrode 6B,
Since there is a difference in the distance between each of ~6Bn, the electrical stimulation between each electrode is not constant due to this difference in distance,
This is because the overall situation becomes unbalanced. A storage section 4 or a manual setting section 5 is provided to correct this imbalance. 8 is a power supply unit that supplies power to each part of the apparatus.

In the bone fusion promoting device configured as described above, when using the data in the storage section 4, the selection switch 3 is first set to the automatic side, and then the selection section 7 is set according to the fracture site. Next, the power feeding electrode 6A and the power receiving electrodes 6B1 to 6Bn are arranged on the skin of the fracture site according to the arrangement pattern used when writing the data into the storage unit 4. in this case,
For example, as shown in FIG. 2, a power supply electrode 6A is arranged, and power receiving electrodes 6B, .about.6Bn (n-7 in this figure) are arranged on the opposite side of the power supply electrode 6A. And each electrode 6
After the arrangement of A and 6B1 to 6Bn is completed, a treatment start switch (not shown) is turned on. Thereby, the control unit 2 reads the setting position of the selection switch 3 and determines whether the automatic mode is the manual mode based on this information. In this case, since it is automatic mode, the control section 2 selects the selection section 7.
The setting position is read, and the data corresponding to this setting position is read from the storage unit 4. Next, based on this data, a high frequency is applied between the power feeding electrode 6A and each of the power receiving electrodes 6B and 6Bn.

Next, when using the manual setting section 5, the power feeding electrode 6A and the power receiving electrodes 6B1 to 6Bn are arbitrarily placed on the skin of the fracture site. And each electrode 6A.

After the placement of 6B and 6Bn is completed, the treatment start switch is turned on. Thereby, the control section 2 determines that it is a manual mote based on the setting position of the selection switch 3, and reads the setting values of each variable resistor of the manual setting section 5 at a predetermined sampling period. Then, the power feeding electrode 6A and each power receiving electrode 6B, to 6Bn are connected based on the setting values of each variable resistor when read.
A high frequency is applied between each of the two. In this case, X IIA
CT (Computed Tomography)
Alternatively, using an ultrasound image diagnostic device, the power feeding electrode 6A and the power receiving electrode 6B, to 6B are determined based on a tomographic image centered on the affected area.
n can be appropriately arranged and the output level of each can be set.

In this way, a plurality of power receiving electrodes 6B are connected to the power feeding electrode 6A.
, ~6Bn are provided, and the high frequency to be applied between the power feeding electrode 6A and each power receiving electrode 6B, ~6Bn is determined for each interval, so that electrical stimulation energy can be efficiently applied to the fracture site.

In the above embodiment, both the automatic mode and the manual mode may be provided, or only one of them may be provided. In this case, a control element such as a CPU is not necessarily required.

"Effects of the Invention" As explained above, since the present invention is configured as described above, it produces the following effects.

The bone fusion promoting device according to claim 1 includes a power feeding electrode connected to one output end of a high frequency generator, and a plurality of power receiving electrodes connected to the other output end of the high frequency generator. Therefore, electrical stimulation energy can be concentrated at the fracture site. Therefore, temporary placement and bone union are achieved in a short period of time.

In the bone fusion promoting device according to claim 2, claim!
In addition to the configuration described above, it is equipped with an output level variable means that can individually vary the output level between the power supply electrode and each power reception electrode, so that the difference in distance between the power supply electrode and each power reception electrode can be Electrical stimulation imbalances can be manually corrected.

In the bone fusion device according to claim 3, in addition to the configuration of claim 1 or claim 2, f and a reading means for reading out the data stored in the storage means. It is possible to automatically correct the unbalance of electrical stimulation due to the difference in distance between the two.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram showing a bone fusion promoting device which is an embodiment of the present invention, and FIG. 2 is a diagram for explaining how to use the embodiment. l... High frequency generator, 2... Control section (reading means), 3... Selection switch, 4... Memory section (storage means), 5... ...Manual setting section (output level variable means), 6A...Power supply electrode, 6B, ~6Bn...Power receiving electrode, 7 -Selection section,
8...Power supply section. Figure 1 Figure 2

Claims (3)

[Claims] (1) A bone fusion promoting device including a high-frequency generator, including a power feeding electrode connected to one output end of the high-frequency generator, and a plurality of power receiving electrodes connected to the other output end of the high-frequency generator. A bone fusion promoting device comprising: (2) The bone fusion promoting device according to claim 1, further comprising output level variable means that can individually vary the output level between the power feeding electrode and each power receiving electrode. (3) A storage means that stores the output level between the power feeding electrode and each power receiving electrode determined based on the bioimpedance of each part of the human body, and a reading means that reads the data stored in this storage means. 3. The bone fusion promoting device according to claim 1, further comprising: