JPH0323252Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a bone fusion promoting device that promotes bone fusion, and particularly relates to a bone fusion promoting device that improves the ease of attachment to a living body.

[Prior Art] Experiments have shown that passing an electric current through bones accelerates bone growth.
This effect is mainly used for the treatment of bone fractures, and a high treatment rate has been achieved.

Direct current is mainly used in the treatment of bone fractures, and the following methods are available for passing this direct current to the fracture site.

A method in which the main body of the bone fusion promoting device, including the power source, is placed outside the body, and the anode and cathode electrodes are respectively inserted into the bone through the skin.

A method in which the anode electrode of a pair of electrode parts is brought into contact with the skin (skin electrode), and the anode electrode is inserted into the bone.

A method in which the device body and a pair of electrode parts are both implanted into the body.

Next, a bone fusion promoting device using the method shown in FIG. 4 will be shown.

In the figure, 1 is a constant current source that outputs a low voltage (several volts) and low current (several tens of microamperes). Reference numerals 2 and 3 are needle-shaped electrodes. Of these, electrode 2, which is used as a cathode, is mainly made of steel wire, and the parts other than the tip and rear ends are covered with resin. (Teflon, etc.) 4 coating is applied. In addition, the electrode 3 used as an anode is made of metal (silver, platinum, etc.) that does not oxidize due to negative ions generated when current is passed, and the electrode 3 is made of a metal (silver, platinum, etc.) that does not oxidize due to negative ions generated when electric current is passed. Painted with Resin 4.

With the above configuration, the electrodes 2 and 3 are inserted into bones separated from each other at the fracture site, and a constant current source 1 supplies a constant amount of minute current.

The bone fusion promoting device using the ~ method is the same as the bone fusion promoting device using the basic method, except for differences in the shape of the electrodes and the fact that the bone fusion promoting device itself is implanted in the body. It is.

[Problems to be solved by the invention] By the way, conventional bone fusion promoting devices have the following advantages and disadvantages.

First, in the bone fusion promoting device using the method of (a) and (b), since the electrodes are inserted into the body, it is easy to monitor the installation state of the electrodes and the amount of current supplied to the electrodes. Furthermore, if bone union does not progress smoothly, the placement position of the electrode can be easily changed.

The disadvantage is that the fixation of the electrode is a problem, and if it is unstable, the electrode may fall off or break.
There is also the risk of inducing infection and of the electrode penetrating soft tissues that move due to joint movement.

In addition, if a skin electrode is used on one side of the electrode,
Since the contact resistance with the skin increases, the voltage applied between the electrodes must be increased in order to cause a given current to flow. Therefore, if the voltage is increased, electrolysis of water will occur around the skin electrode, damaging the surrounding tissue.

Next, although the bone fusion promoting device using the method described above improves the disadvantages of the bone fusion promoting device using the method 2, it is invasive because the bone fusion promoting device body and the electrodes are placed inside the body. becomes large, and the physiological effects on the living body cannot be ignored.

As mentioned above, conventional bone fusion promoting devices have the above-mentioned advantages and disadvantages.

By the way, inserting the electrode or the main body of the electrode and bone fusion promoting device into the body may involve physical pain, as well as the mental pain of having to remain at rest during the treatment. Not a few.

This idea was developed against this background, and its purpose was to create a bone union promoting device that is non-invasive to the body, reduces the treatment rate as much as possible, and eliminates physical and mental pain during treatment. Our goal is to provide the following.

[Means for Solving the Problems] The bone fusion promoting device of this invention is formed into a pair of symmetrical shapes so as to fit tightly between parts of the human body,
Each of the electrode parts has a groove formed along its length on the opposing surface side, and the electrode part is movably attached to the groove of each electrode part, and a thick electrode plate is provided. The electrode includes an electrode integrally formed by fixing the formed gel-like conductive resin, and a high-frequency generating section that is provided on one of the electrode sections and applies high-frequency power between the electrodes. It is characterized by

[Operation] According to the above configuration, by fixing the fracture site with each electrode part, the electrodes are arranged to face each other on the skin surface. When high-frequency power is applied between each electrode from the high-frequency generator in this state, a high-frequency current flows inside the body. This stimulates bone-forming cells and promotes bone growth.

In this way, bone union promoting treatment can be performed while the fracture site is fixed.

[Embodiment] An embodiment of this invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing the configuration of a first embodiment of this invention. In the figure, the same reference numerals are given to the parts corresponding to those in FIG. 4 described above, and the explanation thereof will be omitted.

8 is a high frequency generator, and the amplitude of the output voltage is
10Vpp, frequency is set to 60KHz. 9
Reference characters a and 9b are electrodes that are attached closely to the surface of the skin 6. These electrodes 9a and 9b are made by fixing a thick gel-like conductive resin (polyacrylic) RE ₁ on the electrode plate EL ₁ (see Figure 2 a), which is formed into a thick plate. (See Figure 3a). The electrodes 9a, 9b are attached using fixing members 10a, 10b (planar fasteners, etc.) so as to be in close contact with the skin surfaces of the upper part 5a and lower part 5b of the fractured bone.

Next, the operation of this embodiment will be explained.

The electrodes 9a and 9b are brought into close contact with the skin at the fracture site, facing each other, and the planar fasteners 10a and 1
The electrodes 9a and 9b are each fixed at 0b. Next, high frequency power is supplied from the high frequency generator 8 to the electrodes 9a and 9b.

In this case, the high frequency current emitted from the electrodes 9a, 9b flows from the skin to the fracture site via the soft tissue.

Treatment is performed as described above.

Here, electrodes that are other examples of the above-mentioned electrodes 9a and 9b are shown in FIGS. 2b and 2c.

The electrode 11a shown in _FIG .
is installed.

By increasing the hardness of conductive rubber RE ₂ , it can also have a pine surge effect that stimulates pressure points.

The electrode 12a shown in figure c is a thick electrode plate.
A conductive resin RE ₃ having a curved shape with a protruding upper part is fixed to the EL ₂ and housed in the case CA.

Next, a second embodiment of this invention will be described with reference to FIG.

In the figure, 13 is a bone fusion promoting device for the foot. The main body of this foot bone fusion promoting device 13 has two parts: a main body 13a that is formed to sandwich the human foot from the hip joint to the ankle from the left and right;
13b.

Further, the main bodies 13a and 13b are fastened to each other by fasteners 14a to 14d attached to the main body 13b.

Next, the internal structure of the foot bone fusion promoting device 13 will be explained using the main body 13a as an example.

The main body 13a has a recess with a U-shaped cross section extending from the hip joint to the ankle, and a horizontally elongated through hole Ha along the center of the inside of the recess (see Figure b). , has a structure in which an electrode 15a is inserted into the recess groove.

The electrode 15a is an electrode plate ELa formed in a plate shape, on one side of which a gel-like conductive resin REa is fixed, and on the other side an insulating resin plate ISa with a screw MSa attached to the center. is fixed. The electrode 15a is inserted into the main body 13a by passing a screw MSa outward through a through hole Ha in a recess of the main body 13a, so that the electrode 15a can move within the recess from the hip joint to the ankle. In addition, the main body 13
The electrode 15a can be fixed in the recess by tightening the knob FSa screwed onto the screw Ms protruding through the slotted hole Ha of a.

Reference numeral 16 denotes a high frequency generator that supplies high frequency power to the electrodes 15a and 15b. This high frequency generator 1
6 (see FIG. 3c) is a high frequency generator 16a, a constant voltage circuit 16b, a battery 16c, and a switch 16.
It consists of d. The high frequency generator 16a has an output voltage amplitude of 10 Vpp and a frequency of 60 KHz. The constant voltage circuit 16b converts a commercial power supply AC into a low voltage DC voltage (for example, 12V). The battery 16c outputs the same voltage value as the output voltage of the constant voltage circuit 16b. Switch 16d
is for supplying one of the constant voltage circuit 16b and the battery 16c to the high frequency generator 16a.

The high frequency generator 16 is built only in the main body 13a, and the cable 1 is connected to the electrode 15b of the main body 13b.
High frequency power is supplied via 7.

Note that the battery 16c is convenient for use in treatment during power outages and when moving while maintaining the energized state. Moreover, since the bone healing promoting device 13 for feet can move the electrodes 15a and 15b therein, it is possible to accurately irradiate the fracture site with high frequency waves. Additionally, by attaching it to a broken leg, it also serves as a cast, allowing it to be moved.

Moreover, although the main bodies 13a and 13b are formed so as to sandwich the feet from the left and right sides, they may be formed so that the legs can be sandwiched from the front and back. In this case, the position of the electrodes will be in front and behind the foot. Furthermore, main bodies 13a, 13b
By making the shape suitable for not only the feet but also arms, fingers, head, etc., it becomes possible to treat each body part.

[Effects of the invention] As explained above, according to this invention, a pair of symmetrical shapes are formed so as to fit tightly between parts of the human body, and a groove is formed along the length direction on the opposing surface side of each. An electrode part, a thick electrode plate that is movably attached to the groove of the electrode part, and a gel-like conductive resin formed thickly on the electrode plate are fixed and integrally formed. Since it is equipped with an electrode and a high-frequency generating section that is provided on one of the electrode sections and applies high-frequency power between the electrodes, it is not necessary to insert the electrode or the device body into the body. , there is no mental pain, and since it is small and lightweight and can be battery-powered, it can be moved while providing treatment.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram showing the structure of a first embodiment of this invention, FIG. 2 is a perspective view showing another type of electrode in the same embodiment, and FIG. FIG. 3b is a sectional view showing the cross section of the second embodiment, FIG. 3c is a block diagram showing the configuration of the high frequency generator in the second embodiment, and FIG. 4 is a conventional one. 1 is a schematic configuration diagram showing a bone fusion promoting device of FIG. 15a, 15b... electrode, 13a, 13b...
Electrode section, 14a to 14d... Fastener, 16... High frequency generation section, 17... Cable.

Claims (1)

[Claims for Utility Model Registration] (1) A pair of electrode parts that are formed in a symmetrical shape so as to be sandwiched in close contact with parts of the human body, each having a groove part formed along its length on the opposing surface side; electrodes that are movably attached to grooves of each of the electrode parts and are integrally formed by fixing a thick electrode plate and a gel-like conductive resin thickly formed on the electrode plate; A bone fusion promoting device comprising: a high frequency generating section provided on one of the electrode sections and applying high frequency power between the electrodes. (2) The high frequency generation section includes: a high frequency generator, a constant voltage circuit that rectifies commercial power supply to generate low voltage direct current, a low voltage battery, and a voltage output from the constant voltage circuit and the battery. 2. The bone fusion promoting device according to claim 1, further comprising a switching circuit for supplying one of the voltage output from the high-frequency generator to the high-frequency generator.