JP5782236B2 - Vein perfusion accelerator - Google Patents

Description

  The present invention relates to a blood flow promotion device that promotes blood flow by applying vibration to a part of the body, and in particular, stimulates venous return by stimulating the lower limbs where blood flow is likely to stagnate by complex fine vibration. The present invention relates to a venous return promoting device.

  It is known that when sitting in an aircraft seat for a long time, poor blood circulation occurs on the back of the thigh, and a blood clot (venous thrombus) is formed in the leg vein. If you sit after a blood clot (venous thrombus), the thrombus may move into the bloodstream and become pulmonary embolism, and such thrombosis may occur in aircraft economy class users Since 1968, it was called “Economy Class Syndrome” and has been widely known since 1968.

  The symptoms of the economy class syndrome may not only occur when sitting for a long time, but may also occur after surgery or bedridden conditions where the legs cannot be moved in bed for a long time, In rare cases, if the thrombus peels off and passes through the right ventricle with the blood flow, and then reaches the lungs, the pulmonary artery may become clogged, causing pulmonary embolism, and there is a concern that it may cause dyspnea, decreased cardiac function, or stroke Yes, it can lead to life risks such as death.

By the way, Patent Document 1 proposes a footrest device for a vehicle. In Patent Document 1, the vibration protrusions are projected from a number of holes provided in the foot plate of the footrest device, the base ends of the vibration protrusions are fixed to the holding plate on the back side of the foot plate, and a switch is provided on the upper part of the foot plate. By turning this switch on with the foot, it is possible to vibrate each vibration projection by vibrating the holding plate and to stimulate the sole of the foot. required train seat of the seating posture, by providing the aircraft seat, it is believed that can reduce the fatigue of the foot.

JP-A-9-226431

  However, as in the technique of Patent Document 1, it can be inferred that if a foot is stimulated by vibration by a vibrator, the degree of fatigue of the foot can be reduced, but vibration is simply applied to a part of the body such as the foot. In reality, it is impossible to expect an effect until the blood flow of the body including the feet can be effectively promoted.

  This invention is made | formed in view of the said subject, and it aims at providing the venous return promotion apparatus which can accelerate | stimulate blood flow effectively and can prevent generation | occurrence | production of a thrombus.

A device for promoting venous return according to claim 1 comprises:
A device for promoting venous return that stimulates blood flow by applying vibration generated by a vibrator to a part of the body,
A contact portion that contacts a part of the lower limb in the body;
A first vibration generating section that causes the contact section to vibrate in a contact direction between the contact section and a part of the lower limb;
A second vibration generating unit that causes the contact unit to vibrate in a direction perpendicular to a vibration direction of the first vibration generating unit and along a part of a lower limb that is in contact with the contact unit;
The first vibration that gives elliptical vibrations obtained from the first vibration generation unit and the second vibration generation unit in directions orthogonal to each other to the skin surface of a part of the lower limb in contact with the contact unit. A vibration exciter comprising a generator and the second vibration generator is disposed on the opposite surface of the contact portion;
The vibrator is provided with a motor provided with a rotor,
When the contact direction between the contact portion and a part of the lower limb is a vertical direction,
There is a gap in two directions, the vertical direction between the rotor and the rotor that rotatably supports the rotor, and the thrust direction of the rotor that is orthogonal to the vertical direction.
The vibration generated by the first vibration generating unit is caused by the vertical gap between the rotor and the stator that rotatably supports the rotor when the rotor is rotated in a certain direction. And the vibration generated when the rotor vibrates in the vertical direction,
The vibration generated in the second vibration generator is a gap in the thrust direction between the rotor and the stator that rotatably supports the rotor when the rotor is rotated in a certain direction. It said rotor and said vibration der Turkey generated by vibration in the thrust direction in.

The venous return facilitating device according to claim 2 comprises:
A device for promoting venous return that stimulates blood flow by applying vibration generated by a vibrator to a part of the body,
A contact portion that contacts a part of the lower limb in the body;
A first vibration generating section that causes the contact section to vibrate in a contact direction between the contact section and a part of the lower limb;
A second vibration generating unit that causes the contact unit to vibrate in a direction perpendicular to a vibration direction of the first vibration generating unit and along a part of a lower limb that is in contact with the contact unit;
The first vibration generating unit and the second vibration generating unit that give the contact portion a combined vibration that is obtained from the first vibration generating unit and the second vibration generating unit and vibrates in directions orthogonal to each other. A vibrator is disposed on the opposite surface of the contact portion,
The vibrator is provided with a motor provided with a rotor,
When the contact direction between the contact portion and a part of the lower limb is a vertical direction,
There is a gap in two directions, the vertical direction between the rotor and the rotor that rotatably supports the rotor, and the thrust direction of the rotor that is orthogonal to the vertical direction.
The vibration generated by the first vibration generating unit is caused by the vertical gap between the rotor and the stator that rotatably supports the rotor when the rotor is rotated in a certain direction. And the vibration generated when the rotor vibrates in the vertical direction,
The vibration generated in the second vibration generator is a gap in the thrust direction between the rotor and the stator that rotatably supports the rotor when the rotor is rotated in a certain direction. It said rotor and said vibration der Turkey generated by vibration in the thrust direction in.

Venous return promotion apparatus according to claim 3, Oite to claim 1 or 2,
The rotating body provided in the motor is characterized by being rotated at a low speed of 6 rpm to 150 rpm.

Venous return promotion apparatus according to claim 4, Oite to claim 1 or 2,
The vibrator is provided with a stepping motor provided with a rotating body that is rotated by input of a pulse,
When the step angle of the stepping motor is 1.8 degrees, the pulse generation frequency is a low frequency of 20 Hz to 500 Hz.

The venous return promoting device according to claim 5 is any one of claims 1 to 4 ,
The contact portion has a placement surface for placing a sole as a part of a lower limb in the body.

The venous return facilitating device according to claim 6 is any one of claims 1 to 4 ,
It has attachment means for attaching and detaching the contact part to a part of the lower limb in the body.

  According to the present invention, when the rotor is rotated in a certain direction by driving a motor such as a stepping motor, the rotor vibrates in the vertical direction and is brought into contact with a part of the lower limb. The contact portion is vibrated in a contact direction (vertical direction) between a part of the lower limb and the contact portion. Then, the vibration in the abutting direction gives a stimulus to a part of the lower limb abutted on the contact portion to dilate a blood vessel such as a superficial vein. In parallel with this, the rotor generates vibration in a direction (thrust direction) along a part of the lower limb, and this vibration stimulates a part of the lower limb that is in contact with the contact portion. Can speed up blood flow. Therefore, it is possible to promote blood circulation such as venous flow in the lower limbs where blood flow is likely to stagnate, and as a result, blood flow in the entire body can be effectively promoted.

1 is a perspective view showing a four-phase / one-phase excitation type venous return facilitating device of Example 1. FIG. FIG. 4 is an exploded view showing the internal structure of the venous return promoting device with the lid removed from the container, the container showing the state viewed from above, and the lid showing the state viewed from the back side ing. It is an exploded perspective view which shows a cover body, an L-shaped bracket, and a stepping motor same as the above, and is the figure which faced the contact part of the cover body by which a sole is mounted facing downward. It is a schematic block diagram which shows the state which looked at the stepping motor comprised as a vibrator from the side surface side same as the above. It is a schematic block diagram which shows the state which looked at the stepping motor comprised as a vibrator from the front side same as the above. It is explanatory drawing which shows the relationship between the input pulse signal of 4 phase 1 phase excitation system, and an excitation signal, a horizontal axis represents time, a vertical axis | shaft represents the sequence of an input pulse, the excitation time chart, and the number of excitation phases. . It is explanatory drawing about the Lissajous figure represented when combining the simple vibration of two directions orthogonal to each other. It is explanatory drawing which shows the lung, the heart, the blood vessel, etc. which a human body has. It is a graph which shows the test result to which this venous return promotion apparatus is applied. It is explanatory drawing which shows the stepping motor which attached the eccentric weight to the front-end | tip of the rotating shaft in Example 2. FIG.

  Embodiments of the present invention will be described below. Needless to say, the present invention can be easily applied to configurations other than those described in the embodiments without departing from the spirit of the invention.

  As shown in FIG. 1, the venous return facilitating device 1 according to an example of the present invention is a set of two, and is used by placing one foot on each of the venous perfusion promoting devices 1, for example. The outer shape is formed by a lid 3 having a contact portion 2 on which the sole is placed and a container 4 to which the lid 3 is screwed.

  As shown in FIG. 2, the inside of the venous return facilitating device 1 composed of the lid 3 and the container 4, on the opposite side of the flat contact portion, is against the sole placed on the contact portion 2. A vibration exciter 5 that provides vibration is provided. The vibration exciter 5 is composed of two stepping motors 6, and the rotation shafts 7 provided on each of the stepping motors 6 are arranged on the same axis line, and the tip portion thereof promotes the rotation of the rotating veins. The devices 1 are horizontally arranged outward in the short direction (vertical direction shown in FIG. 2).

  Each of the stepping motors 6 is screwed to the cut-and-raised piece 8 protruding to the opposite side of the contact portion on the sole shown in FIGS. 2 and 3 via an L-shaped bracket 9. . The L-shaped bracket 9 has one piece 9a screwed and fixed to the cut-and-raised piece 8 of the lid 3, while the other piece 9b has a surface on the side having the rotating shaft 7 of the stepping motor 6 screwed. The fixed stepping motor 6 is supported in a cantilevered manner with respect to the L-shaped bracket 9 and has a structure that easily generates vibration when the stepping motor 6 is driven at a low speed.

  Further, as shown in FIG. 2, a control board 10 is attached in the container 4 as a control means for centrally controlling operations such as rotation speeds of the two stepping motors 6. When electric power (AC100V) is applied to the venous return facilitation device 1 by turning on the power switch 12 provided, the control board 10 rotates the rotating shafts 7 of the two stepping motors 6 in the same direction at a constant speed. .

  Here, the structure of the stepping motor 6 configured in the vibrator 5 will be described. Although two stepping motors 6 are configured as described above, since each has the same structure, only one of them is illustrated in FIGS. 4 and 5 and described below.

  The stepping motor 6 in an example of the present embodiment has a step angle of 1.8 degrees, and as shown in FIGS. 4 and 5, a rotor 15 obtained by processing a magnetic material into a gear shape and the rotor 15 are opposed to each other. A stator 18 having a gear-shaped stator magnetic pole 17 around which an exciting coil 16 is wound, a metal bearing 19 that supports the rotating shaft 7 provided on the rotor 15, a thrust washer 20, and the like are configured.

  A gap is provided between the rotor 15 and the stator 18 in the radial (diameter) direction of the rotor 15 and the thrust (axis) direction of the rotor. Then, using the rotational force generated by attracting the convex pole 15a of the rotor 15 by the attractive force of the electromagnet, for example, as shown in FIG. 5, if the four phases are A, B, C, D, As shown in FIG. 6, the rotor 15 of the stepping motor 6 is rotated by sequentially switching in the order of A → B → C → D phase by continuously input pulses as shown in FIG. 6. Therefore, the stepping motor 6 is called a so-called four-phase / one-phase excitation method, and rotates when the rotor 15 is rotated at a predetermined low frequency (predetermined low-speed rotation) described later by a continuous input pulse. Gravity or the like acts on the rotor 15, and the rotor 15 vibrates in the vertical direction in the radial gap (first air gap G1) in the radial (diameter) gap, and further in the vertical direction. Resonates with vibration Te, also it vibrates in the thrust (axial) direction (horizontal direction) by the thrust (axial) direction of the gap (the second air gap G2). The resonance frequency (pulse generation frequency X described later) in the vertical direction and the thrust (axis) direction is in the range of 20 to 500 Hz, and when the rotor 15 is rotated at a low speed, the vertical direction and the thrust (axis) ) Direction vibration is combined to generate a composite combined vibration elliptical vibration, and the rotor 15 is rotated at a low speed at a low frequency of 20 to 500 Hz so that a relatively large amplitude can be obtained. When the resonance frequency (pulse generation frequency X) is in the range of 20 to 500 Hz, the number of rotations per minute (rpm) is 6 rpm to 150 rpm, as can be calculated from the following formula.

[Equation 1]
Pulse generation frequency X (Hz (pps)) = rotational speed (rpm) / 60 (seconds) × 360 (degrees) / A (step angle)
(In this embodiment, the step angle of the stepping motor (rotating angle by one pulse) is A = 1.8 degrees.)

  Here, the elliptical vibration will be described with reference to FIG. The elliptical vibration generated by the vibrator that constitutes the stepping motor 6 is obtained by synthesizing two simple vibrations that vibrate in a direction perpendicular to each other. ) When the direction is represented by a plane figure with the X axis as shown, it can be represented by a Lissajous figure (elliptical shape) as shown in FIG. In the present embodiment, the combined vibration obtained from the simple vibration in the vertical direction and the simple vibration in the thrust (axis) direction is represented by an ellipse, and thus becomes a Lissajous figure having a phase difference of 45 degrees or 135 degrees, for example.

  Next, the operation effect when the elliptical vibration generated by the vibrator 5 is applied to the skin surface of the sole that is in contact with the contact portion 2 by operating the venous return facilitation device 1 in this embodiment will be described. The following explanation is based on the cause of the stagnation. In the present embodiment, an example will be described in which the sole is placed on the horizontally provided contact portion 2 and vibration is applied to the sole. 2, when other parts of the lower limb are brought into contact with the contact portion, although not shown, it may be attached to the lower limb using attachment means such as a velvet fastener attached to the container 4. Be good.

  As shown in FIG. 8, inside the skin surface of the human body, there is a “superficial vein” near the skin surface as a kind of vein, and a “deep vein” as a deep vein passing through the muscle. Originally slow-flowing veins have a higher risk of clogging than the arteries that deliver blood from the heart, and have a path inside them in addition to being closer to the skin surface. Although the situation can be avoided, if the superficial vein or deep vein is clotted, and rarely the thrombus peels off and passes through the right ventricle of the heart and flows into the lung, the pulmonary artery is clogged. This can cause dyspnea and pulmonary embolism, which can lead to decreased cardiac function when the thrombus reaches the heart and stroke when it reaches the brain. In addition, blood from the heart is sent by an artery and returns via a vein. The main cause of venous thrombosis is stagnation of blood flow. Venous blood flow is enhanced by the action of a muscle pump by stretching and contracting leg muscles and the action of a foot pump by applying weight to the plantar venous plexus, but not moving the body is a major cause of blood flow stagnation. ing.

  In addition, as a method for venous return of blood accumulated in the lower limbs and plantar venous plexus, for example, the “axon reflex phenomenon”, that is, in the sensory nerve by stimulation, for the vein flowing toward the heart by the muscle pumping action of the foot, etc. The impulse generated in the blood is transmitted through the other branches of the afferent nerve to the skin blood vessels in the opposite direction, releasing the vasodilator and expanding the blood vessels, or “shear stress (shear stress on the vascular endothelial cells due to vibration). ) Effect ”, that is, the effect of increasing the blood flow by increasing the nitric oxide (NO) production in the vascular endothelial cells by vibration and expanding the blood vessels by adjacent vascular smooth muscle cells. Can be improved.

  Therefore, in view of the above points, in the venous return facilitation device 1 of the present embodiment, the skin surface (sole) placed horizontally on the contact portion 2 using the vertical vibration of the elliptical vibration. Squeezing intermittently with the vibration component in the vertical direction (equivalent to the aforementioned muscle pump action), releasing NO (nitrogen monoxide) into the vein, and expanding the vein, thereby storing extra blood Reduces and promotes the flow of deep veins to promote venous return, and smoothly accumulates blood stored in the lower limbs, plantar venous plexus and the like. In parallel with this, the skin surface in contact with the contact portion 2 is further stimulated by vibration in the direction along the skin surface (horizontal direction), that is, the vibration in the thrust (axis) direction described above. Giving stress promotes blood flow sequentially from the extremity of the foot to the central part of the heart due to shear stress, thereby reducing depressive blood and preventing thrombus formation. Therefore, the combined elliptical vibration (vertical vibration + thrust (axial) vibration) that promotes blood flow increases the blood flow in the lower limbs and increases the blood flow in the remote part away from the lower limbs. Promotes and activates systemic venous return as well as lower limbs.

  In FIG. 9, the sole of the bare foot of a healthy person sitting on a chair is placed on the contact portion 2 and the venous return promoting device 1 is operated under the above-described conditions (the step angle of the stepping motor 6 is 1.8 degrees). The graph shows the results of testing whether or not the venous blood flow is promoted by operating at a pulse generation frequency of 20 Hz to 500 Hz (more specifically, 120 Hz). This is a result of measuring the blood flow of the right ankle vein with a probe of an ultrasonic blood flow meter (not shown). The vertical axis shows the blood flow ratio, and the horizontal axis shows the passage of time. Show. As the measurement timing, if the blood flow ratio 3 minutes before the start of operation of the venous return promoting device 1 is “1”, “0.85” is 2 minutes before the start, and “1” is 1 minute before the start. .18 ”, although there is some ups and downs, if the venous return facilitation device 1 is operated and stopped by applying vibration for 3 minutes and then rested for 3 minutes after the stop, 1 minute after the start of rest (rest After 1 minute), the blood flow ratio gradually increases to “1.22”, then increases to “2.22” after 2 minutes (after 2 minutes of rest), and further 3 minutes later ( After 3 minutes of rest), the result increased significantly to “2.89”. As is clear from this result, the blood flow ratio before the operation of the venous return facilitating device 1 was “1”, but by using this device, blood was nearly tripled (2.89). It was possible to increase the flow ratio, and the result that the blood flow can be greatly promoted was obtained.

  As described above, according to the present venous return facilitation device 1, the vibration generated by the vibrator 5 is stimulated by applying a vibration to a part of the body to promote blood flow. A contact part 2 to be brought into contact with the part, a first vibration generating part for causing the contact part 2 to vibrate in the contact direction between the contact part 2 and a part of the lower limb, and a vibration direction of the first vibration generating part A second vibration generating unit that causes the contact unit 2 to vibrate in a direction that is perpendicular to the contact unit 2 and that extends along a part of the lower limb that is in contact with the contact unit 2. The first vibration generation unit and the second vibration generation unit The elliptical vibration as the combined vibration that vibrates in the orthogonal direction is obtained from the vibration generating portion of the lower limb from the vibrator 5 located on the opposite surface of the lid 3 that does not have the contact portion 3 via the contact portion 2 or the like. Give to some skin surface. The vibrator 5 includes two stepping motors 6, and a stator 18 and a rotor that rotatably support the rotor 15 when a contact direction between the contact portion 2 and a part of the lower limb is a vertical direction. A gap is provided in two directions, ie, a vertical direction between the first and second rotors 15 and a thrust direction of the rotor 15 having an orthogonal relationship therewith, and the vibration generated by the first vibration generator causes the rotor 15 to move in a certain direction. The rotor 15 vibrates in the vertical direction in the vertical gap (first air gap G1) between the stator 18 and the rotor 15 that rotatably supports the rotor 15 when the rotor 15 is rotated. The vibration generated by the second vibration generating unit is the stator 18 and the rotor 15 that rotatably support the rotor 15 when the rotor 15 is rotated in a certain direction. Gap in the thrust direction (second air gap G2 The vibration generated by the vibration of the rotor 15 in the thrust direction (horizontal direction), and the elliptical vibration synthesized from these vibrations causes the rotating body of the stepping motor 6 to be in the range of 6 rpm to 150 rpm (or the stepping motor step). (When the angle is 1.8 degrees, the pulse generation frequency is set to a low frequency of 20 Hz or more and 500 Hz or less) and can be generated when rotating at a low speed (the elliptical vibration is not generated when rotating at a high speed). . When the rotor 15 is rotated in a certain direction at a low speed by driving the stepping motor 6, the rotor 15 vibrates in the vertical direction, and the contact portion in contact with a part of the lower limb. 2 is vibrated in a contact direction (vertical direction) between a part of the lower limb and the contact portion 2. Then, the vibration in the abutting direction gives a stimulus to a part of the lower limb abutted on the contact portion 2 to expand a blood vessel such as a superficial vein. In parallel with this, the rotor 15 generates vibration in a direction (thrust direction) along a part of the lower limb, and this vibration stimulates a part of the lower limb in contact with the contact portion 2. Can speed up blood flow. Therefore, it is possible to promote blood circulation such as venous flow in the lower limbs where blood flow is likely to stagnate, and as a result, blood flow in the entire body can be effectively promoted.

  Next, Example 2 will be described below with reference to FIG. The stepping motor 30 according to the second embodiment has the same structure as the first embodiment except that a weight for eccentric rotation is attached to the tip of the rotating shaft 7, as shown in FIG. Therefore, the detailed description is omitted. Then, by attaching the eccentric weight 31 to the tip of the rotating shaft 7, when the rotor 15 is rotated, it is possible to generate a vibration with a larger amplitude amount (vibration in the vertical direction + vibration in the thrust direction). Thus, it is possible to obtain an effect that blood flow can be further effectively promoted.

  As mentioned above, although an example of this embodiment was explained in full detail, this invention is not limited to the Example mentioned above, A various deformation | transformation implementation is possible within the range of the summary of this invention. For example, it is obvious that a DC motor may be employed instead of the stepping motors 6 and 30 described above. Further, it is obvious that the motor that generates the vibration in the vertical direction and the motor that generates the vibration in the thrust direction may be arranged orthogonally.

DESCRIPTION OF SYMBOLS 1 Vein return promotion apparatus 2 Contact part 2a Mounting surface 3 Lid 4 Container 5 Exciter 6 Stepping motor (of Example 1) 7 Rotating shaft 8 Cut-and-raft piece 9 L-shaped bracket 9a One piece 9b The other piece 10 Control Substrate (control means)
DESCRIPTION OF SYMBOLS 12 Power switch 15 Rotor 15a Convex pole 16 Excitation coil 17 Stator magnetic pole 18 Stator 19 Metal bearing 20 Thrust washer 30 (Example 2) Stepping motor 31 Eccentric weight G1 First air gap (vertical gap)
G2 Second air gap (gap in the thrust direction)

Claims (6)

A device for promoting venous return that stimulates blood flow by applying vibration generated by a vibrator to a part of the body,
A contact portion that contacts a part of the lower limb in the body;
A first vibration generating section that causes the contact section to vibrate in a contact direction between the contact section and a part of the lower limb;
A second vibration generating unit that causes the contact unit to vibrate in a direction perpendicular to a vibration direction of the first vibration generating unit and along a part of a lower limb that is in contact with the contact unit;
The first vibration that gives elliptical vibrations obtained from the first vibration generation unit and the second vibration generation unit in directions orthogonal to each other to the skin surface of a part of the lower limb in contact with the contact unit. A vibration exciter comprising a generator and the second vibration generator is disposed on the opposite surface of the contact portion;
The vibrator is provided with a motor provided with a rotor,
When the contact direction between the contact portion and a part of the lower limb is a vertical direction,
There is a gap in two directions, the vertical direction between the rotor and the rotor that rotatably supports the rotor, and the thrust direction of the rotor that is orthogonal to the vertical direction.
The vibration generated by the first vibration generating unit is caused by the vertical gap between the rotor and the stator that rotatably supports the rotor when the rotor is rotated in a certain direction. And the vibration generated when the rotor vibrates in the vertical direction,
The vibration generated in the second vibration generator is a gap in the thrust direction between the rotor and the stator that rotatably supports the rotor when the rotor is rotated in a certain direction. in venous return accelerator device comprising a vibration der Turkey that the rotor is generated by the vibration in the thrust direction. A device for promoting venous return that stimulates blood flow by applying vibration generated by a vibrator to a part of the body,
A contact portion that contacts a part of the lower limb in the body;
A first vibration generating section that causes the contact section to vibrate in a contact direction between the contact section and a part of the lower limb;
A second vibration generating unit that causes the contact unit to vibrate in a direction perpendicular to a vibration direction of the first vibration generating unit and along a part of a lower limb that is in contact with the contact unit;
The first vibration generating unit and the second vibration generating unit that give the contact portion a combined vibration that is obtained from the first vibration generating unit and the second vibration generating unit and vibrates in directions orthogonal to each other. A vibrator is disposed on the opposite surface of the contact portion,
The vibrator is provided with a motor provided with a rotor,
When the contact direction between the contact portion and a part of the lower limb is a vertical direction,
There is a gap in two directions, the vertical direction between the rotor and the rotor that rotatably supports the rotor, and the thrust direction of the rotor that is orthogonal to the vertical direction.
The vibration generated by the first vibration generating unit is caused by the vertical gap between the rotor and the stator that rotatably supports the rotor when the rotor is rotated in a certain direction. And the vibration generated when the rotor vibrates in the vertical direction,
The vibration generated in the second vibration generator is a gap in the thrust direction between the rotor and the stator that rotatably supports the rotor when the rotor is rotated in a certain direction. in vein reflux promotion apparatus characterized by a vibration der Turkey that the rotor is generated by the vibration in the thrust direction. The venous return facilitating device according to claim 1 or 2, wherein the rotating body provided in the motor is rotated at a low speed of 6 rpm to 150 rpm. The vibrator is provided with a stepping motor provided with a rotating body that is rotated by input of a pulse,
The venous return facilitation device according to claim 1 or 2, wherein when the step angle of the stepping motor is 1.8 degrees, the pulse generation frequency is a low frequency of 20 Hz to 500 Hz. The venous return promotion according to any one of claims 1 to 4, wherein the contact portion has a placement surface for placing a sole as a part of a lower limb in the body. apparatus. The venous return facilitating device according to any one of claims 1 to 4, further comprising attachment means for attaching and detaching the contact portion to a part of a lower limb of the body.

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