JPH0482567A - Bone healing promoter - Google Patents

Abstract

PURPOSE:To further promote a formation of a temporary bone and a healing of a bone as compared with a case using a high frequency irradiation alone by inducing a high frequency current in a broken part of a bone while a piezoelectricity is generated by an ultrasonic energy. CONSTITUTION:A high frequency generator 1 generates a high frequency and an output level and the frequency can be varied optionally. Electrodes 2a and 2b are connected to an output end of the high frequency generator 1 through cords 3a and 3b and one end of an ultrasonic oscillation element 4 is connected to one output end of the high frequency generator 1 through a cord 5a while the other end thereof is connected to the other output end of the high frequency generator 1 through a cord 5b. Here, the electrodes 2a and 2b are arranged as opposed to each other on a skin sandwiching the broken part of a bone while the ultrasonic oscillation element 4 is arranged on the skin at the right angle to a direction of opposing the electrodes 2a and 2b to each other. Then, when a power source switch is closed to an ON position, a high frequency is applied between the electrodes 2a and 2b to induce a high frequency current in the broken part of the bone. At the same time, an ultrasonic wave is irradiated to the broken bone part from the ultrasonic oscillation element 4 thereby generating a piezoelectricity in the bone at the broken part.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a bone fusion promoting device suitable for use in 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 1leds) 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.

"Problem to be Solved by the Invention" By the way, among the conventional bone fusion promoting devices mentioned above, those using the direct current stimulation method and the alternating current stimulation method require electrodes to be inserted directly into the living body as described above. Therefore, there is an 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, with pulsed electromagnetic field stimulation method and capacitive induction method,
Since there is no need to insert electrodes into the living body, it has the advantage of reducing the burden on the patient. However, it is difficult to efficiently concentrate electrical stimulation energy on the fracture site.
The disadvantage is that temporary placement and bone union take a considerable amount of time.

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 can perform temporary placement and bone union in a short period of time.

[Means for Solving the Problems J] The present invention provides a bone fusion promoting device comprising a high frequency generator and two electrodes connected between the output ends of the high frequency generator, in which the output of the high frequency generator is supplied. It is characterized by comprising an ultrasonic oscillator.

"Operation" According to the above configuration, ultrasonic irradiation is performed in addition to high frequency irradiation to the fracture site. This creates piezoelectricity in the bone,
Temporary placement and bone union are further promoted than in the case of radiofrequency irradiation alone.

"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, l is a high frequency generator, for example 60
Generates a high frequency of KHz and its output level is 2.5~t
It can be arbitrarily adjusted within the range of ovp and p. Moreover, the frequency can also be changed arbitrarily. 2 a and 2 b are electrodes, and the code 3 a
, 3b to the output end of the high frequency generator 1. 4 is an ultrasonic oscillator, one end of which is connected to one output end of the high frequency generator I through a cord 5a, and the other end is connected to the other output end (ground end) of the high frequency generator I through a cord 5b. It is connected to the. The ultrasonic oscillator 4 is also equipped with a mechanism (path shown) that converts ultrasonic energy into a beam. Reference numeral 6 denotes a power supply section that supplies power to the high frequency generator 1.

In the bone fusion promoting device configured in this manner, as shown in FIG. 2, electrodes 2a and 2b are placed facing each other on the skin so as to sandwich the fractured part, and then an ultrasonic oscillator 4 is placed between the electrodes 2a and 2b. 2b on the skin in a direction perpendicular to the facing direction. After these arrangements are completed, when a power switch (not shown) is turned on, a high frequency is applied between the electrodes 2a and 2b, and a high frequency current is induced in the fracture. At the same time, ultrasonic waves are irradiated from the ultrasonic oscillator 4 toward the fracture, and piezoelectricity is generated in the bone at the fracture site. This results in
Temporal formation and bone union are promoted.

In addition, in the above embodiment, since the ultrasonic energy can be made into a beam, it is possible to selectively administer ultrasonic energy in the case of a complex fracture, which could not be expected in the past in the case of a complex fracture. It can be expected to have the effect of promoting temporary placement and bone union.

"Effects of the Invention" As explained above, according to the bone fusion promoting device according to the present invention, a high-frequency current is induced in the fracture site and piezoelectricity is generated by ultrasonic energy, so that only high-frequency irradiation is required. The effect is that temporary placement and bone union are further promoted than in the case of this method.

[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 showing the state in which the embodiment is used. ]...High frequency generator, 2a, 2b...electrodes, 4...ultrasonic oscillator.

Claims (1)

[Claims] A bone fusion promoting device comprising a high frequency generator and two electrodes connected between output ends of the high frequency generator, characterized by comprising an ultrasonic oscillator to which the output of the high frequency generator is supplied. Bone fusion promoting device.