Motorized external counterpulsation device

Abstract

The present invention belongs to the technical field of external counterpulsation, in particular to an electric motor type external counterpulsation device, which includes a binding belt, a winding shaft and a driving source. The binding belt is wound around the patient's leg to form a closed winding area. The winding shaft is fixedly connected to the binding belt, and when the winding shaft rotates forward, the binding belt is wound to reduce the area of the winding area, or when the winding shaft rotates reversely, the binding belt is released to restore the area of the winding area. The driving source is used to drive the winding shaft to rotate forward or reversely. The electric motor type external counterpulsation device provided by the present invention has the advantages of small volume and convenient carrying. Its transmission is rapid, stable and reliable, and the counterpulsation treatment effect is good.

Description

Technical Field

[0001] The present invention belongs to the technical field of external counterpulsation, and in particular, to an electric motor type external counterpulsation device. Background Art

[0002] Counterpulsation is a method of mechanical assistance to reduce systolic blood pressure and increase diastolic blood pressure in the aorta, so as to assist the heart in doing work, improve blood circulation, and increase blood perfusion in organs such as the heart, brain, and kidneys. Counterpulsation increases the blood supply to the coronary arteries by increasing the diastolic blood pressure of the aorta, rescues ischemic myocardium, and improves the heart's pumping function. The commonly used counterpulsation methods include intra-aortic balloon counterpulsation and external counterpulsation.

[0003] External counterpulsation is a method of non-invasively pressing the lower body outside the body to relieve and eliminate angina symptoms and improve the hypoxic and ischemic state of important organs of the body. It is also a medical device used to prevent and treat cardiovascular and cerebrovascular diseases. The traditional external counterpulsation device inflates and pressurizes the airbags wrapped around the limbs and buttocks during the diastolic phase of the heart, prompting the blood in the limb arteries and veins to return to the heart, resulting in a significant increase in diastolic blood pressure, improving blood perfusion in important organs such as the heart and brain, and reducing the afterload of the heart; during the systolic phase of the heart, the airbags quickly exhaust air and the pressure is released, prompting the systolic blood pressure in the aorta to drop, minimizing the resistance during the heart's ejection phase, and accelerating the blood flow to the distal end, thereby achieving the counterpulsation effect.

[0004] However, the traditional method of inflating and pressurizing the airbag does not control the extrusion force accurately enough, and the speed response is slow. Specifically, the process of inflating and pressurizing the airbag is a process of gas compression and transfer, that is, the movement of gas in the air circuit is a process of pressure equilibrium under the condition of pressure difference. This process has a slower response speed compared to contact mechanical extrusion; at the same time, due to the non-linear change of the air circuit pressure, the control is relatively complex. Summary of the Invention

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art and provide an electric motor type external counterpulsation device to achieve precise control of the extrusion force.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] An electric motor type external counterpulsation device, comprising:

[0008] A binding belt, which is wound around the patient's leg to form a closed winding area;

[0009] A winding shaft, which is fixedly connected to the binding belt, and winds the binding belt to reduce the area of the winding area when the winding shaft rotates forward, or releases the binding belt to restore the area of the winding area when the winding shaft rotates reversely;

[0010] A driving source for driving the winding shaft to rotate forward or backward.

[0011] Preferably, the motor-driven extracorporeal counterpulsation device further includes:

[0012] A mounting base having an accommodation space for mounting and fixing the driving source;

[0013] The driving source is a servo motor, and a driving gear is provided on the output shaft thereof;

[0014] The upper end of the mounting base extends outwards on both sides to form ear plates. The winding shaft passes through the ear plates, and a driven gear is provided at the end of the winding shaft. The driven gear meshes with the driving gear, and when the output shaft of the servo motor rotates, it drives the winding shaft to rotate.

[0015] Preferably, the overhanging end of the ear plate extends outwards on the side away from the binding strap to form side plates. A surrounding plate is provided between the two side plates. The surrounding plate, the side plates and the ear plates enclose an accommodation cavity for arranging the driving gear and the driven gear.

[0016] Preferably, the lower end of the mounting base extends outwards on both sides to form bottom plates. The lower end of the winding shaft is fixed on the bottom plates via bearings.

[0017] Preferably, the binding strap includes:

[0018] An inner layer located on the side of the binding strap close to the patient's leg, which is made of a medical airbag;

[0019] An outer layer provided on the side of the inner layer away from the patient's leg, which is made of a non-compliant material;

[0020] A locking member provided on the outer layer, and used to lock and fix the binding strap after it is wound around the patient's leg.

[0021] Compared with the prior art, the present invention has the following technical effects:

[0022] The motor-driven extracorporeal counterpulsation device provided by the present invention has the advantages of small volume and convenient carrying; its transmission is rapid, stable and reliable, and the counterpulsation treatment effect is good.

[0023] Other features and advantages of the present invention will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of a motor-driven extracorporeal counterpulsation device provided by the present invention;

[0025] Figure 2 It is a schematic diagram of another motor-driven extracorporeal counterpulsation device provided by the present invention;

[0026] Figure 3 is Figure 2 a sectional view taken along the A-A direction in

[0027] Explanation of reference numerals in the figure: 1 - patient's leg, 10 - binding strap, 11 - inner layer, 12 - outer layer, 13 - locking member, 20 - winding shaft, 21 - driven gear, 30 - driving source, 31 - driving gear, 40 - mounting base, 41 - ear plate, 42 - side plate, 43 - enclosing plate, 44 - accommodating cavity, 45 - bottom plate. Detailed implementation manners

[0028] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further clarified below with reference to specific drawings.

[0029] It should be noted that in the present invention, when an element is referred to as "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manner.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0031] Combined with Figure 1 As shown, the present invention provides a motor-driven external counterpulsation device, including a binding strap 10, a winding shaft 20 and a driving source 30. The binding strap 10 is wound around the patient's leg 1 to form a closed winding area. The winding shaft 20 is fixedly connected to the binding strap 10, and when the winding shaft 20 rotates forward, the binding strap 10 is wound to reduce the area of the winding area, or when the winding shaft 20 rotates reversely, the binding strap 10 is released to restore the area of the winding area. The driving source 30 is used to drive the winding shaft 20 to rotate forward or reversely.

[0032] Further, according to the present invention, the motor-driven extracorporeal counterpulsation device further includes a mounting base 40 which has a receiving space for mounting and fixing the driving source 30. In the present invention, the function of the driving source 30 is to drive the winding shaft 20 to rotate, wind the binding belt 10 to reduce the area of the closed winding area formed around the patient's leg 1, so as to realize the extrusion of the patient's leg; the periodic extrusion of the patient's leg 1 is realized by the forward or reverse rotation of the winding shaft 20, so as to achieve the effect of counterpulsation.

[0033] As a specific implementation manner for the driving source 30 to drive the winding shaft 20 to rotate, the driving source 30 is a servo motor, and a driving gear 31 is provided on its output shaft; the upper end of the mounting base 40 extends outwards to both sides with ear plates 41 respectively, the winding shaft 20 passes through the ear plates 41 and a driven gear 21 is provided at the end of the winding shaft 20; the driven gear 21 meshes with the driving gear 31, and when the output shaft of the servo motor rotates, the winding shaft 20 is driven to rotate.

[0034] Specifically, in the present invention, the output shaft of the servo motor and the driving gear 31 are fixedly connected by a key, and the driving gear 31 meshes with the driven gear 21. Therefore, after the servo motor rotates forward, the power can be quickly, stably and reliably transmitted to the winding shaft 20. When the winding shaft 20 rotates, it winds the binding belt 10 and immediately reduces the winding area formed after it winds around the patient's leg 1. The above extrusion method is sensitive and reliable; after the servo motor rotates in reverse, the winding area of the binding belt 1 can be immediately released and restored, so as to realize the rapid release of the patient's leg 1.

[0035] Further, as Figure 2 、 3 shown, in the present invention, the overhanging end of the ear plate 41 extends towards the side away from the binding belt 10 with a side plate 42; a surrounding plate 43 is provided between the two side plates 42, and the surrounding plate 43, the side plates 42 and the ear plates 41 enclose a receiving cavity 44 for arranging the driving gear 31 and the driven gear 21. By enclosing the corresponding transmission components, the stability and reliability of its transmission are ensured, and potential safety hazards are avoided.

[0036] In the present invention, the upper end of the mounting base 40 refers to the end close to the patient's head during specific use.

[0037] Further, according to the present invention, as shown in Figure 2 shown, in order to improve the stability of the winding shaft 20 when winding or releasing the binding belt 10, the lower end of the mounting base 40 extends outwards to both sides with bottom plates 45 respectively, and the lower end of the winding shaft 20 is fixed on the bottom plates 45 via bearings.

[0038] In the present invention, the function of the binding strap 10 is to wrap around the patient's leg 1, and under the action of the winding shaft 20, it realizes the extrusion of the patient's leg to achieve counterpulsation. As a specific implementation manner of the binding strap 10, the binding strap 10 includes a double-layer structure of an inner layer 11 and an outer layer 12, wherein the inner layer 11 is located on the side of the binding strap 10 close to the patient's leg 1 and is made of a medical airbag; this can prevent the skin at the patient's leg 1 from being abraded by long-term friction, or reduce the direct extrusion of the patient's leg 1 caused by other accidental situations; in addition, by setting a medical airbag with a flexible characteristic, it is also helpful to make the pressure on the patient's leg uniform and improve the counterpulsation treatment effect;

[0039] The outer layer 12 is arranged on the side of the inner layer 11 away from the patient's leg 1 and is made of a non-compliant material; specifically, for example, the outer layer 12 of the binding strap 10 is made of nylon material.

[0040] In order to fix the binding strap 10 after wrapping around the patient's leg, a locking member 13 is also provided on the binding strap 10. It is arranged on the outer layer 12 and locks and fixes the binding strap 10 after it wraps around the patient's leg 1. Specifically, for example, the locking member 13 is a nylon fastener or a snap fastener that is convenient for disassembly.

[0041] When the motor-driven extracorporeal counterpulsation device provided by the present invention is specifically used, the patient needs to lie flat on the bed surface with the legs relaxed. The binding strap 10 is used to wrap around the patient's leg 1, and then the electrocardiogram signal and arterial pressure signal of the patient are collected. After processing, the trigger points, that is, the timing of extrusion and release, are obtained and sent to the servo motor. The servo motor rotates forward or backward to realize the extrusion of the human leg to achieve the counterpulsation treatment effect.

[0042] The traditional pneumatic extracorporeal counterpulsation realizes the extrusion of the patient's limbs through a huge air compressor and solenoid valves to achieve the counterpulsation effect. It has a large noise and severe jitter; it is not easy to be miniaturized, community-based and home-based; while the motor-driven extracorporeal counterpulsation device provided by the present invention has the characteristics of small volume and easy to carry, and the patient can carry it home for treatment. In addition, the motor-driven extracorporeal counterpulsation device provided by the present invention has a fast response speed and good equipment stability, can better implement the counterpulsation assistance function, and further improves the curative effect and the comfort of the patient.

[0043] The above shows and describes the basic principles, main features and characteristics of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An electro-mechanical external counterpulsation device, characterized in that, Comprising: A binding strap (10) that is wound around a patient's leg (1) to form a closed winding area; A winding shaft (20) that is fixedly connected to the binding strap (10), and when the winding shaft (20) rotates forward, winds the binding strap (10) to reduce the area of the winding area, or when the winding shaft (20) rotates backward, releases the binding strap (10) to restore the area of the winding area; A drive source (30) for driving the winding shaft (20) to rotate forward or backward; The binding strap (10) comprises: An inner layer (11) located on the side of the binding strap (10) adjacent to the patient's leg (1), which is made of a medical airbag; An outer layer (12) provided on the side of the inner layer (11) away from the patient's leg (1), made of a non-compliant material; A locking member (13) provided on the outer layer (12) and locking the binding strap (10) after it is wound around the patient's leg (1); The inner layer (11) and the outer layer (12) near the position of the winding shaft (20) are in a separated state, the outer layer (12) is wound with the winding shaft (20), and the inner layer (11) wraps around the outer periphery of the patient's limb.

2. The motor-driven external counterpulsation device according to claim 1, characterized in that, Further comprising: A mounting seat (40) having an accommodation space for mounting and fixing the drive source (30); The drive source (30) is a servo motor, and a driving gear (31) is provided on its output shaft; The upper end of the mounting seat (40) extends to both sides respectively with ear plates (41), the winding shaft (20) passes through the ear plates (41), and a driven gear (21) is provided at the end of the winding shaft (20); The driven gear (21) meshes with the driving gear (31), and when the output shaft of the servo motor rotates, it drives the winding shaft (20) to rotate.

3. The motor-driven external counterpulsation device according to claim 2, characterized in that, The overhanging end of the ear plate (41) extends to the side away from the binding strap (10) with side plates (42); a surrounding plate (43) is provided between the two side plates (42), and the surrounding plate (43), the side plates (42) and the ear plates (41) enclose an accommodation cavity (44) for arranging the driving gear (31) and the driven gear (21).

4. The motorized extracorporeal counterpulsation device according to claim 2 or 3, characterized in that, The lower end of the mounting seat (40) extends to both sides respectively with bottom plates (45), and the lower end of the winding shaft (20) is fixed on the bottom plates (45) via bearings.

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