JPS60215362A - Medical traction apparatus - 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 relates to a therapeutic traction device suitable for traction treatment of cervical vertebrae, lumbar vertebrae, etc.

To treat diseases that involve abnormalities in the pillars and their surrounding areas, traction therapy is used to restore the vertebral body by applying moderate traction to the neck or lower back, or to decompress the disc by enlarging the intervertebral foramen. It is valid. One of the therapeutic traction devices used in this traction therapy for woodcutter, which has been known for a long time, is one that uses continuous traction means that utilizes oriental forces that act on gravity.

However, this type of heavy-duty falconry device for medical treatment is
As can be seen from the traction pattern shown in ), the traction force changes rapidly between the beginning and the end of traction, which tends to cause psychological anxiety to the patient, and also makes it difficult to change the traction force and traction pattern easily. There was a drawback.

In addition, traction devices are known that use the spring force generated by the expansion and contraction of the springs instead of the electric power that acts on the heavy weight. Although the traction device for large-splash treatment is capable of both intermittent traction and continuous traction, and has the advantage of being able to steplessly increase or decrease the traction speed, as can be seen from the traction pattern shown in Figure 1 (B), Another disadvantage is that it is impossible to change the traction force during traction treatment, and it is difficult to shorten the traction cycle due to limits on the speed of expansion and contraction of the spring.

Furthermore, a torque motor treatment zero pulling device is also known that uses a torque motor instead of the above-mentioned weights and springs, and as can be seen from the pulling pattern shown in Figure 1 (C), the pulling force and pulling speed are By taking advantage of the variable traction force and variable traction force, it is now possible to perform gravity treatment on Yuzu. However, in this Yuzu torque motor type therapeutic traction device, since the torque motor has the rotation speed-torque characteristic shown in Figure 1 (IJ), when the control voltage of the torque motor is changed, the rotation speed and torque change. Both change, and therefore, in order to obtain the required torque, it is necessary to control both the control voltage and the rotation speed, resulting in frequent drawbacks such as the unavoidable need for multiple control circuits.

This invention a1 eliminates the above drawbacks, and has a configuration in which a wire drum for the vehicle side is connected to an electric motor via an electromagnetic clutch, and the rotational speed of the wire drum is controlled by changing the excitation current of the electromagnetic clutch. An object of the present invention is to provide a therapeutic traction device in which both intermittent traction and continuous traction are available, and the traction force can be easily and quickly adjusted.

In order to achieve this object, the present invention provides a wire for applying traction force to the cervical or lumbar vertebrae of a patient who requires traction, a wire drum around which the wire is wound, and the entire rotational power of the wire drum. The gist of the device is that it is composed of a motor that generates electricity, and an electromagnetic clutch that is installed between the motor and the wire drum and that transmits torque according to the excitation current.

According to the present invention, an electromagnetic clutch is provided between a wire drum for winding leather wire and a motor that generates rotational power for the wire drum, and torque is transmitted according to the excitation current. , the torque to be transmitted from the motor to the wire drum can be arbitrarily varied according to the energizing current of the electromagnetic clutch, and the response speed of the electromagnetic clutch is high. Since the winding torque of the drum can be varied with high precision, the traction force by the wire can be arbitrarily changed according to the desired sheep pulling pattern. The value and minimum value or the traction cycle composition, interval, etc. can be set very easily, and the traction treatment can be performed using a traction pattern that does not cause anxiety to the patient.

Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 is a perspective view showing an embodiment of the therapeutic traction device of the present invention, and FIGS. 3 and 4 are a rotation speed-transmission torque characteristic diagram and an excitation current-transmission characteristic diagram of the electromagnetic clamper shown in FIG. 2, respectively. The torque characteristic diagrams in FIGS. 5A to 5J) are waveform charts showing the traction patterns of the therapeutic traction device shown in FIG. 2, respectively.

In Fig. 2, the therapeutic traction device i11 is shown to be applied to the cervical vertebrae. Multiply by
It is configured such that a nozzle 3 fixed to both ends of the chin band 2 is pulled upward by a wire 4. The wire 4 is connected to a guide pulley 6 at the tip of an inverted support column 5 and a floor-standing device main body 1.
The wire is wound around a wire drum 8 inside the main body la of the apparatus via a guide pulley 7 at the upper part of the wire a. Wire drum 8 has 0 tin
The sphere rocket 10 on the driving side is rotatably driven by a chain 11 stretched between 9 and 10, and is connected to an output shaft 12a of an electromagnetic clutch 12 of an electromagnetic powder type (powder type). This electromagnetic clutch 12 is directly connected to the motor 13 and can arbitrarily control torque transmission from the p1 motor 13 by adjusting the excitation current.

In the case of this embodiment, since the electromagnetic powder type is adopted as the electromagnetic clutch 12, its rotation speed-transmission torque characteristics and current-transmission torque characteristics are extremely difficult to control, as shown in Fig. 3-4. It has the same characteristics as before. That is, if the excitation current (maximum value I) is constant, the transmitted torque is constant regardless of the rotation speed of the motor 13, and the transmitted torque is linearly proportional to changes in the excitation current. This results in a proportional relationship with a high degree of approximation. Therefore, motor 1
30 Even if the number of rotations changes, the transmitted torque is uniquely determined by the excitation current. Therefore, when changing the traction force of the therapeutic traction device 1, the magnetic clutch 11
It is a good idea to change only the excitation current of .

Reference numeral 14 denotes a control device for controlling the traction force; The energization pattern of the excitation current of the m-clutch 12 can be studied in detail. Considering that the electromagnetic clutch 12 has a high response speed and its operation delay can be ignored, it is clear that a traction pattern similar to the energization pattern of the electromagnetic clutch 12 can be obtained.

FIG. 5(C) shows a traction pattern in which normal continuous traction is repeated over a relatively long period, and continuous traction is performed with a constant traction force at excessive intervals. In this traction pattern, it is easy to vary the traction speed until a constant traction force is reached, and by gradually increasing or decreasing the excitation current of the electromagnetic clutch 12, the traction speed can be adjusted arbitrarily.

Figure 5 (B) shows an intermittent traction pattern with repeated traction at short intervals, and the maximum value of traction force can be changed by 1j for each number of tractions, and leather knots with high therapeutic effects are selected for each patient. In addition, since the maximum traction force changes gradually, the patient can receive traction treatment with peace of mind without feeling psychologically anxious.

FIG. 5(C) shows a sinusoidal intermittent traction turn, and the maximum value and cycle of the traction force are determined by the electromagnetic clutch 12.
It can be arbitrarily varied according to the energization pattern, and a turn that causes the least anxiety to the patient can be obtained.

Figure 5 (D) shows intermittent traction and turning performed by limiting the maximum and minimum traction forces to fixed values, and is similar to the traction pattern of conventional torque motor therapeutic traction devices. However, since the minimum value of the traction force is not zero, it includes elements of continuous traction while being slow due to intermittent traction.

In this embodiment, the therapeutic traction device 1 is applied to traction of the cervical vertebrae.As shown in FIG. By using the waist band 22 instead of 3, it can also be used for traction on the lumbar vertebrae.In this case, the patient undergoing treatment lies on his back along the traction direction on the ped 23, and the traction force is effective. It is advisable to identify both sides of the bed 23 so as to act on the bed 23.

As explained above, the therapeutic traction device 1 having the above configuration
According to , a wire drum 8 for winding a traction wire 4
Since the electromagnetic clutch 12 is provided between the motor 13 and the motor 13 that generates the rotational power of the wire drum 8, and the torque is transmitted according to the excitation current, the torque to be transmitted from the motor 13 to the wire drum 8 is The response speed of the electromagnetic clutch 12 can be varied arbitrarily depending on the current applied to the electromagnetic clutch 12, and the winding torque of the wire drum 8 can be changed without changing the rotational speed of the motor 13. Since it can be varied with high precision, the traction force by the wire 4 can be arbitrarily changed according to the desired traction pattern, and this allows the maximum and minimum values of the traction force or the traction period to be adjusted whether it is continuous traction or intermittent traction. In other words, it is possible to extremely easily set the intervals, etc., and it is possible to perform traction treatment using a traction pattern that does not cause anxiety to the patient.

[Brief explanation of the drawing]

Figure 1 (A), (B), and (shi) are the vehicle-mounted type and the splash type, respectively. FIG. 1 (D) is a waveform diagram showing the traction pattern of a conventional torque motor type therapeutic traction device, and FIG. 3 is a perspective view showing an embodiment of the therapeutic traction device of the present invention, and FIGS. 3 and 4 are a rotation speed-transmission torque characteristic diagram and an excitation current-transmission torque characteristic diagram of the electromagnetic clutch shown in FIG. 2, respectively. , FIG. 5(A) or L)) is
FIG. 2 is a waveform diagram showing the traction pattern of the therapeutic traction device shown in FIG. 2, and FIG. 6 is a perspective view showing another example of use of the therapeutic traction device of the present invention. DESCRIPTION OF SYMBOLS 1... Treatment traction device, 4... Wire, 8... Wire drum, 12... Electromagnetic clutch, 13... Motor. Figure 2 1 Figure 3 Figure 4 Procedural amendment (method) May 13, 1985 1. Display of case 1988 Patent Application No. 238257 2. Title of invention Treatment traction device 3. Make amendments Patent applicant address (residence) 3-31-7 Hongo, Bunkyo-ku, Tokyo 113 Name: Sakai Medical Co., Ltd. Representative Kiyoshi Nakazawa 4, agent Address (residence) 143 Omori Higashi 1-9-17-5, Ota-ku, Tokyo Date of amendment order April 30, 1985 (shipment date) 6 Subject of amendment Drawing 7 Contents of amendment (1) Figure 1 of the attached drawing Prisoner, (B), (C),
Correct O)) as shown in the separate sheet.

Claims (1)

[Claims] A wire that applies a traction force to the cervical vertebrae or lumbar vertebrae of a patient, a wire drum around which the wire is wound, a motor that generates the rotational power sound of the wire drum, and a combination of the motor and the wire drum. A therapeutic traction device comprising an electromagnetic clutch provided between the two and transmitting torque according to an excitation current.