KR20220008145A - Cardiac impulsing type fluid transfer device - Google Patents

Abstract

One embodiment of the present invention is to provide a pulsatile fluid transfer apparatus capable of quantitatively transferring a fluid by generating a beating similar to that of a natural heart. A pulsatile fluid transfer apparatus, according to one embodiment of the present invention, comprises: a pressurized part which is provided lengthways in the longitudinal direction, and transfers an internal fluid in the longitudinal direction as pressure transformation is generated due to transmission of an external force; a rotating body which is rotated by means of power transmitted from a driving part, and has an outer circumferential surface adjacent to the outer surface of the pressurized part; and a pulsating pressurizing part which is formed to protrude in a pulsating pressurizing shape along the longitudinal direction on the outer circumferential surface of the rotating body, and transmits a pressurizing force to the pressurized part such that a fluid transfer waveform of the pressurized part maintains a pulsating waveform.

Description

CARDIAC IMPULSING TYPE FLUID TRANSFER DEVICE

The present invention relates to a pulsatile fluid transfer device.

The artificial heart can be classified into a pulsatile blood pump and a non-pulsatile blood pump according to the generation of blood flow. The pulsatile blood pump presses the blood bag or part containing blood, which functions as an artificial ventricle, from the outside to release the internal blood. The non-pulsating blood pump causes the blood to be pushed out by the rotational force of the impeller in direct contact with the blood.

A device that induces a pressure change in the artificial ventricle of a pulsatile blood pump can be classified into a pneumatic type that applies pressure with air, and a mechanical type that applies pressure with a solid type device. The pneumatic pulsatile blood pump uses a device equipped with a vacuum pump and an air compressor to press the blood bag with compressed air and restore the vacuum. However, the blood pump driving device in which the vacuum pump and the air compressor are combined is bulky and heavy, making it difficult to use in places other than hospitals, and there is a limitation in the movement of the patient. On the other hand, in the conventional pulsatile and rotary blood pumps, various valves are used to prevent the reverse flow of blood in the pump. If the valve used at this time is damaged, the blood flows back and the blood circulation is not smooth. In addition, the pulsatile blood pumps developed so far only generate a normal pulsation rather than realizing a beating similar to the natural heart.

As a related prior art, US Patent No. 7,726,956 discloses "a peristaltic pump including an eccentric adjustment mechanism".

US Patent 7,726,956

One embodiment of the present invention is to provide a pulsatile fluid transport device capable of quantitatively transporting a fluid while generating a beating similar to a natural heart.

In addition to the above problems, the embodiment according to the present invention may be used to achieve other problems not specifically mentioned.

A pulsatile fluid transport device according to an embodiment of the present invention is provided long in the longitudinal direction, and as an external force is transmitted, pressure deformation is generated, and the power of the pressurized part and the driving part for transporting the internal fluid in the longitudinal direction is transmitted and rotated, The rotating body provided so that the outer circumferential surface is adjacent to the outer surface of the pressurized part is formed to protrude in a pulsating pressure shape along the longitudinal direction on the outer circumferential surface of the rotating body to transmit the pressing force to the pressurized part so that the fluid transfer waveform of the pressurized part maintains the pulsating waveform It includes a beat pressing unit.

One embodiment of the present invention can simply implement a pulsatile fluid transport structure, so it can be made compact and lightweight, so it can be portable, and similar to a natural heart, it can be implemented so that the fluid transport amount generates a negative value, and quantitative transport is possible. There is an effect that can be applied as an essential medical device pump.

1 is an exploded view illustrating a coupling relationship of a pulsatile fluid transfer device according to an embodiment of the present invention.
2 is an isolated view illustrating a coupling relationship between a part to be pressed and a housing.
3 is a view showing a state in which the pulsating pressurizing unit is pressed by pressing the pressurized unit.
4 is a diagram illustrating an example of a pulsatile peristaltic motion.
5 is a diagram schematically illustrating a process of transforming a pulsating pressing unit provided on a plate into a cylindrical shape.
6 is an exploded view illustrating a pulsatile fluid transfer device according to another embodiment of the present invention.
7 is an exploded view of FIG. 6 .
8 is a view of the compressed state of the tube viewed in the direction of the rotation axis.
9 is a diagram illustrating a state in which a fluid is transferred by an operation of a pulsatile fluid transfer device according to another embodiment of the present invention.
10 is a diagram illustrating a transfer flow rate of a pulsatile fluid transfer device according to another embodiment of the present invention.

With reference to the accompanying drawings, the embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. In order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and the same reference numerals are used for the same or similar components throughout the specification. In addition, in the case of a well-known known technology, a detailed description thereof will be omitted.

Throughout the specification, when a part "includes" a certain element, it means that other elements may be further included, rather than excluding other elements, unless otherwise stated.

Hereinafter, a pulsatile fluid transfer device will be described in detail with reference to the drawings.

1 is an isolated view showing a coupling relationship of a pulsatile fluid transport device according to an embodiment of the present invention, and FIG. 2 is a separated view showing a coupling relationship between a pressurized part and a housing. And FIG. 3 is a view showing a state in which the pulsating pressurizing part is pressed by pressing the pressurized part, FIG. 4 is a view showing an example of pulsating-type peristaltic motion, and FIG. is a diagram schematically showing 1 to 5 , a pulsatile fluid transfer device according to an embodiment of the present invention includes a pressurized unit 120 , a rotating body 130 , and a pulsating pressurizing unit 140 , and a pulsating pressurizing unit 140 . As the rotating body 130 with a rotates and pressurizes the pressurized unit 120 , it generates a beating similar to a natural heart and can quantitatively transport the fluid.

The pressurized portion 120 is provided long in the longitudinal direction, and as an external force is transmitted, a pressure deformation is generated to guide the transfer of the internal fluid. The pressurized portion 120 may include a tube 122 that has elasticity, is deformed in shape according to a pressing force, and maintains a circular shape according to a restoring force. The pressurized part 120 is provided long in the longitudinal direction of the hollow housing, and one or more may be provided along the inner circumferential surface of the housing. The pressurized portion 120 is provided in a convex protruding shape along the longitudinal direction of the tube 122 from the outer surface of the tube 122, and further includes a fixing protrusion 124 for guiding the tube 122 to be coupled to the inner surface of the housing. can do. Here, the fixing protrusion 124 may be integrally formed with the tube 122 .

Meanwhile, the housing may be provided with a guide groove in the shape of a concave groove into which the fixing protrusion 124 is inserted and fixed along the longitudinal direction of the housing at a position corresponding to the portion to be pressed 120 . The housing is formed in a cylindrical shape, the main body 110 is provided with a guide groove along the longitudinal direction of the inner surface, is provided on one side of the opening of the main body 110, the tube 122 through the 11th hole 152 It may include a first cover 150 provided with, and a second cover 160 provided on the other open side of the body 110 and having a twelfth hole 162 through which the tube 122 passes. Here, the guide groove is formed in a concave shape corresponding to the outer shape of the tube 122 on the inner surface of the main body 110 to support the seating of the tube 122 , the first groove 112 , and the first groove 112 . A second groove 114 formed in a concave shape corresponding to the outer shape of the fixing protrusion 124 on the inner surface to support the coupling of the fixing protrusion 124 may be included. Since the housing has a guide groove in the shape of a concave groove into which the part to be pressed 120 is inserted and fixed, it is possible to prevent the part to be pressed 120 from deviate from a predetermined position in the housing when the rotating body 130 rotates. Referring to FIG. 3 , when the rotating shaft 132 rotates counterclockwise, the pressurized portion 120 positioned above the rotating body 130 may be compressed. The depth of the guide groove provided in the body 110 may be formed to the thickness of the elastically pressed part 120 . The inner surface of the body 110 may be formed so that the rotation of the pulsating pressure unit 140 is not disturbed when the pressurized unit 120 is compressed. At this time, the diameter of the pressurized portion 120, the size of the pulsating pressure portion 140, and the diameter of the rotating body 130 may be formed in various shapes to correspond to each other.

1 to 3, the tube 122 is positioned in the first groove 112 provided in the body 110, and the fixing protrusion 124 is fitted in the second groove 114, so that the pulsating pressure part ( It is possible to prevent the tube 122 from being tilted in one direction when the 140 is rotated. That is, by fixing the pressurized unit 120 by the guide groove, the pressurized unit 120 does not deviate from the guide groove while the pressurized unit 120 is compressed by the rotational operation of the pulsating pressurizing unit 140 . It can be fixed firmly.

2 and 3 , the hollow cylindrical housing may have a structure in which two are separated and coupled to facilitate assembly of the pulsatile fluid transfer device. For example, the body 110 of the housing may include a first body 110a and a second body 110b, and the first body 110a and the second body 110b may be separated and coupled to each other by hinged coupling. have. The overall outer shape of the pulsatile fluid transfer device may be formed in a horizontal and cylindrical shape elongated in the longitudinal direction, but may also be formed in a vertical shape, or may be formed in a square column shape, or various shapes.

The rotating body 130 is rotated by receiving power from a separately provided driving unit, and may be provided such that an outer circumferential surface thereof is adjacent to the outer surface of the pressurized unit 120 . The rotating body 130 may be rotated by coupling the rotating shaft 132 to the housing. That is, the rotating body 130 may be rotated by coupling the rotating shaft 132 to the driving unit. One side of the rotation shaft 132 is connected to a driving unit, and the driving unit may include a motor having an appropriate rotation speed and torque. And if necessary, a power transmission unit may be provided between the driving unit and the rotation shaft 132 . The power transmission unit may include a gear or a pulley. The rotating shaft 132 of the rotating body 130 may be respectively coupled to the first cover 150 and the second cover 160 of the housing via the bearing 134 . The first cover 150 and the second cover 160 are provided with through-holes into which the rotating shaft 132 is inserted, and bearings 134 are fitted into the through-holes to be coupled to the rotating shaft 132 . Here, the through hole may include a first through hole 154 provided in the first cover 150 and a second through hole 164 provided in the second cover 160 . One side of the first cover 150 or the second cover 160 may be fixedly connected to a driving unit or a separately provided support.

The pulse pressure unit 140 is formed to protrude in a beating pressure shape along the longitudinal direction on the outer circumferential surface of the rotating body 130 so that the fluid transfer waveform of the pressurized unit 120 maintains a heartbeat waveform (cardiac impulsing wave). A pressing force may be transmitted to 120 . Here, the beating waveform refers to a waveform generated by repetition of contraction and expansion of the natural heart. In an embodiment of the present invention, the transfer flow of the fluid transferred through the pressurized unit 120 due to the volume change of the pressurized unit 120 generated according to the pressing force of the beating pressurizing unit 140 may be implemented as a beating waveform. . The beating pressurizing unit 140 may include a plurality of pressurizing units having different beating pressurizing shapes corresponding to a plurality of different pressurizing sections. The beating pressurizing unit 140 may be formed in a different beating pressurizing shape in a plurality of different pressurizing sections divided to correspond to the beating waveform. For example, referring to FIGS. 4 and 5 , the pulsating pressing unit 140 is formed in the first upward pressing section A to transmit the first upward pressing force. The eleventh pressing unit 142 and the eleventh pressing unit are formed. It is formed to extend to 142, is formed in the first downward pressing section (B), is formed to extend to the 21st pressing part 144, the 21st pressing part 144 for transmitting the first downward pressing force, the second upward pressing The twelfth pressing part 146 is formed in the section C to transmit the second upward pressing force, and the twelfth pressing part 146 is extended and formed in the second downward pressing section D to transmit the second downward pressing force. It may include a 22nd pressing unit 148 to deliver the. The beating pressurizing unit 140 is formed in a beating pressurizing shape to pressurize the pressurized unit 120 , thereby generating a beat similar to a natural heart, and quantitatively transferring the fluid.

For example, the rising height of the first rising and pressing section A may be 75% or more of the total height of the pulsating pressing unit 140 . The descending height of the first descending pressing section (B) may be 25% or less of the total height of the pulsating pressing unit 140 . The rising height of the second upward pressing section (C) may be greater than the falling height of the first downward pressing section (B). The descending height of the second downward pressing section (D) may be smaller than the rising height of the second upward pressing section (C).

The pulsatile fluid transfer device according to the embodiment of the present invention can generate a natural heartbeat phenomenon even by using only one beat pressure unit 140, and can implement a structure similar to a kind of linear pulsation pump. That is, the tube 122 must be completely compressed only by one pulsating pressure unit 140 . As one beat pressure unit 140 is used, the diameter of the beat pressure unit 140 should be relatively large.

The pulsatile fluid transport device may generate a linear peristaltic motion similar to the method of transporting the fluid by compressing the elastic tube 122 by a roller rotating like a peristaltic pump. 4 is a diagram illustrating an example of a pulsatile peristaltic motion. Referring to FIG. 4 , when the beating pressurizing unit 140 having a beating pressurizing shape is provided in a specific pressurizing section, the fluid in the tube 122 according to the purpose may be transferred along the curve of the beating pressurizing unit 140 . . The fluid in the tube 122 moves from left to right according to the shape of the beating pressure unit 140. At the beginning of the movement, the fluid in the tube 122 moves rapidly from left to right, then moves in the reverse direction for a while, and then again to the left. You can move in the forward direction to the right. By differentiating the flow volume (Volume) of the fluid over time, a flow rate curve over time as shown in FIG. 4 can be obtained, and this flow rate curve can appear similar to the blood flow curve generated in the heart. . In addition, by integrating the flow rate curve over time, it is possible to obtain a flow amount curve of the fluid over time. Accordingly, the shape of the pulsating pressure unit 140 may be substantially the same as the shape of the curve of the amount of movement of the fluid over time. As the pulse pressure unit 140 passes through the tube 122 , the start point of the pulse pressure unit 140 may contact again after the end point at which the contact with the tube 122 ends. That is, when the pulse pressure unit 140 is continuously disposed and passes through the tube 122 , the fluid in the tube 122 continuously moves from left to right while showing a heartbeat waveform.

5 is a diagram schematically illustrating a process of transforming a pulsating pressing unit provided on a plate into a cylindrical shape. 4 and 5, when the tube 122 rotates clockwise in a state in which the tube 122 is in close contact with the pulsating pressure unit 140 in parallel with the cylinder on one side, the fluid in the tube 122 is at the bottom is moved to the top At this time, the flow rate change can simulate a natural heartbeat pattern.

As described above, the pulsatile fluid transfer device according to the embodiment of the present invention can be reduced in size and weight while generating a heart-like beat. The action of the heart is similar to that of a pump, so when the ventricles contract, blood is supplied to the arteries, and when the atria dilate, blood flows in from the veins. At this time, the valves that allow blood flow in only one direction are sequentially opened and closed, preventing the backflow of blood, so that blood circulation is smoothly repeated. This repetition of contraction and expansion of the heart is called beating (cardiac impulsing), and the atria and the ventricles beat with different rhythms, respectively. Heart rate also depends on a person's health, age, and gender. However, when in a steady state, an individual's beat is almost constant, and the standard beat for an adult is 60 to 80 beats.

Such a pulsatile fluid transfer device can be implemented as a pulsating blood pump that implements a natural heartbeat waveform. And it is possible to control the cycle of the beat while maintaining the beat waveform. In addition, since it can be formed with a simple structure compared to the existing pulsatile blood pump, miniaturization and weight reduction are possible, thereby providing a portable pulsatile blood pump. In addition, quantitative fluid transfer, such as the heart, is possible. In addition, like a general peristaltic pump, it is possible to provide an anti-contamination type blood pump in which blood does not contact the pump driving device and only the tube 122 is in contact. That is, unlike the conventional pulsatile blood pump, it can be developed as a portable blood pump, and there is an effect of cost reduction through a simple structure. In addition, since it is highly useful as a semen injection device, it can be applied as a dialysis device and a pump for medical devices that require quantitative transfer in addition to a blood supply device.

6 is a view illustrating a pulsatile fluid transfer device according to another embodiment of the present invention, and FIG. 7 is an exploded view of FIG. 6 . 8 is a view showing the compressed state of the tube in the direction of the rotation axis, and FIG. 9 is a view showing a state in which the fluid is transferred by the operation of the pulsatile fluid transfer device according to another embodiment of the present invention. 6 to 9 , the pulsatile fluid transfer device 200 according to another embodiment of the present invention includes one pressurized part, two rotating bodies, and two beat pressurized parts, and is equipped with a pulsating pressurizer. The dog's rotating bodies are arranged in a symmetrical structure to each other, so it can generate a beat similar to a natural heart and transfer fluid quantitatively. The pulsatile fluid transfer device 200 according to another embodiment of the present invention has one rotating body 130 and one pulsating pressing unit ( 140) is different from the pulsatile fluid transfer device according to the embodiment of the present invention in which the pressurized portion 120 is compressed.

The rotating body may be provided with a plurality of parts to be pressed therebetween. For example, the rotating body may include a first rotating body 230 provided on one side with the part to be pressed therebetween, and a second rotating body 230a provided on the other side to correspond to the first rotating body 230 . can

The beating pressure unit may include a first beating pressure unit 240 provided on the outer circumferential surface of the first rotating body 230 and a second beating pressure pressing unit 240a provided on the outer circumferential surface of the second rotating body 230a. . A portion to be pressed with elasticity may be positioned between the symmetrical first pulsating pressing unit 240 and the second pulsating pressing unit 240a.

The portion to be pressed has elasticity, is deformed in shape according to the pressing force, and has a circular shape according to the restoring force, and is formed elongated along the longitudinal direction of the tube 220 on the inner surface of the tube 220, located opposite to each other It may include a protrusion 222 in the shape of a tube tongue (tube tongue) that is formed to protrude in the central direction of the tube (220). In this case, the material of the protrusion 222 may be formed of an elastic material such as the tube 220 . The pressurized portion is a first beating pressurizing region 224 that is pressed in response to the pressing force of the first beating pressing unit 240 and a second beating pressing region 226 that is pressurized in response to the pressing force of the second beating pressing unit 240a. can form. The outer shape of the tube 220 positioned between the two rotating bodies may be formed in a circular cross-sectional shape having a constant thickness when cut in a direction perpendicular to the longitudinal direction. As shown in FIG. 8 , in a state in which the protrusion 222 is provided inside the tube 220, the tube 220 is compressed by the first beating pressing part 240 and the second beating pressing part 240a on both sides. In this case, the inside of the tube 220 may be in a completely closed state. If it is assumed that the tube not provided with the protrusion 222 is compressed by the first beating pressure unit 240 and the second beating pressure unit 240a, fluid transfer may be difficult. That is, when the tube without the protrusion 222 is compressed by the first beating pressing unit 240 and the second beating pressing unit 240a, even if the tube is in a compressed state, there is no pressure inside the tube. An empty space may be generated. As the empty space is generated, even if the pulsating pressure unit rotates, the inlet 252 and the outlet 262 communicate with the empty space of the tube, so that the fluid cannot be transferred.

It is provided on one open side of the tube 220, an inlet chamber 250 having an inlet 252 communicating with the tube 220 to form a fluid inlet path, and the other open side of the tube 220, , may include a discharge chamber 260 having an outlet 262 communicating with the tube 220 to form a fluid discharge path. Both ends of the tube 220 may be coupled to an inlet chamber 250 including an inlet 252 and an outlet chamber 260 including an outlet 262 . The pulsatile fluid transfer device may include a case capable of fixing the inlet chamber 250 and the outlet chamber 260 . The case of the pulsatile fluid transfer device may be fixed by connecting the inlet chamber 250 and the outlet chamber 260 to each other or fixed to a separate support. The case of the pulsatile fluid transfer device may be formed in various shapes such as an oval or a square, and may be formed in a horizontal or vertical shape depending on the purpose of use.

It may further include a power transmission unit for transmitting the power of the driving unit to the rotating body. The first rotating body 230 and the second rotating body 230a may rotate in opposite directions. For example, the first rotating body 230 may rotate in a clockwise direction while the second rotating body 230a may rotate in a counterclockwise direction. Therefore, the first beating pressure unit 240 and the second beating pressure unit 240a face each other, and even during rotation, the end surfaces of the first beating pressure unit 240 and the second beating pressure unit 240a are always the most will be located close. That is, the distance between the end surfaces of the pulsating pressing unit symmetrical to each other may be related to the sum of the thicknesses of the tube 220 . In order for the end face of the beating pressurizing part to continuously maintain the same distance while the beat pressing part rotates, the rotating bodies must rotate exactly in opposite directions to each other. For example, the power transmission unit is provided on one side of the worm gear 270 and the worm gear 270 rotated by receiving the power of the driving unit to transmit the power of the worm gear 270 to the first rotating body 230 ( ). 280), and a second worm wheel 280a provided on the other side of the worm gear 270 to transmit the power of the worm gear 270 to the second rotating body 230a.

The driving unit may include a motor, and the worm gear 270 may be connected to the motor to rotate counterclockwise. When the worm gear 270 rotates counterclockwise according to the rotation of the driving unit, the first worm wheel 280 and the second worm wheel 280a located on the left and right of the worm gear 270 may rotate with a low gear ratio. 6 and 7, a first worm wheel 280 and a second worm wheel 280a are connected to the left and right of the worm gear 270, and the first worm wheel 280 and the second worm wheel 280a are opposite to each other. direction can be rotated. The first worm wheel 280 may be connected to the first rotation shaft 232 to rotate the first rotation body 230 provided with the first beating pressure unit 240 . The second worm wheel 280a may be connected to the second rotation shaft 232a to rotate the second rotation body 230a provided with the second beating pressure unit 240a. Accordingly, the first rotating body 230 and the second rotating body 230a may rotate in opposite directions to each other. That is, the first beat pressure unit 240 and the second beat pressure unit 240a rotate, and the tube 220 positioned between the first beat pressure unit 240 and the second beat pressure unit 240a is compressed. And, the position of the compressed portion of the tube 220 is changed by the rotation direction and the beating pressure shape of the first beating pressure unit 240 and the second beating pressure unit 240a, and the fluid can be transferred.

On the other hand, the bearing 234 may be provided so that each of the rotating bodies shaft-coupled to the first rotating body 230 and the second rotating body 230a rotates smoothly. Bearings 234 may be fixed to the left and right of the inlet chamber 250 and the outlet chamber 260 . For example, the first rotating shaft 232 of the first rotating body 230 may be respectively coupled to the inlet chamber 250 and the outlet chamber 260 via a bearing 234 . The inlet chamber 250 and the outlet chamber 260 are provided with first through-holes 254 and 264 into which the first rotation shaft 232 is inserted, and a bearing 234 is fitted in the first through-holes 254 and 264. It may be coupled to the first rotation shaft 232 . Meanwhile, the second rotation shaft 232a of the second rotation body 230a may also be coupled to the inlet chamber 250 and the discharge chamber 260 via the bearing 234 , respectively. The inlet chamber 250 and the outlet chamber 260 are provided with second through-holes 256 and 266 into which the second rotation shaft 232a is inserted, and a bearing 234 is fitted into the second through-holes 256 and 266. It may be coupled to the second rotation shaft 232a.

As described above, the pulsatile fluid transfer device 200 according to another embodiment of the present invention includes a pair of rotating shafts, a pair of rotating bodies, a pair of pulsating pressurizing units, an inlet chamber 250, with a pressurized unit interposed therebetween. The discharge chamber 260 may include a power transmission unit including one worm gear 270 and two worm wheels. One side of the worm gear 270 may be connected to a motor that is a driving unit, and a gear ratio may be adjusted to correspond to a heartbeat cycle. For example, the rotational speed and torque of the driving part may be adjusted by considering that the heart rate of a normal adult is 60 to 80 beats per minute.

The power transmission unit may be connected to various reduction devices such as a spur gear set, a bevel gear, a planetary gear or a pulley instead of the worm gear 270 . For example, the power transmission unit is rotated by receiving the power of the driving unit, a first gear that transmits the power of the driving unit to the first rotating body 230, and the first gear are engaged and rotated, and the power of the first gear is generated. It may include a second gear for transmitting to the second rotating body (230a). The first gear and the second gear may use spur gears. In this case, a pair of rotating bodies may be combined so as to be rotated in opposite directions to each other.

10 is a diagram illustrating a transfer flow rate of a pulsatile fluid transfer device according to another embodiment of the present invention. Referring to FIG. 10 , the transfer flow generally moves from the bottom to the top. While the pulse pressure part rotates, the tube 220 always maintains a compressed state at any one location. The fluid is transferred through the change in the compression position, and the transferred flow rate can be expressed as shown in FIG. 10 . That is, it is possible to implement the pulsatile blood transfer generated in the natural heart. The natural heart does not always maintain only a positive value of the flow rate as shown in FIG. 10, but instantaneously shows a negative value of the flow rate and repeats this. The pulsatile fluid transfer device 200 according to another embodiment of the present invention may be implemented to generate a negative value in blood flow similar to a natural heart.

Although preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements by those skilled in the art using the basic concept of the present invention as defined in the following claims are also provided. is within the scope of the

110 ; body 112; first home
114; second groove 120 ; pressurized part
122; tube 124 ; fixed protrusion
130 ; Rotating body 132; axis of rotation
140 ; beat pressure unit 150 ; first cover
160 ; second cover 230 ; first rotating body
232 ; first rotating shaft 230a; second rotating body
232a; second rotating shaft 240 ; first beat pressurizing unit
240a; a second beating pressure unit 220 ; tube
222; protrusion 250 ; inlet chamber
260 ; exhaust chamber 270 ; worm gear
280 ; first worm wheel 280a; 2nd worm wheel

Claims (18)

A part to be pressed that is provided long in the longitudinal direction and is deformed in pressure as an external force is transmitted to transport the internal fluid in the longitudinal direction;
The power of the driving unit is transmitted and rotated, and the rotating body is provided so that the outer peripheral surface is adjacent to the outer surface of the pressurized part;
A pulsating pressurizing part is formed to protrude in a pulsating press shape along the longitudinal direction on the outer circumferential surface of the rotating body to transmit the pressurizing force to the pressurized part so that the fluid transfer waveform of the pressurized part maintains the pulsating waveform.
A pulsatile fluid transport device comprising a. In claim 1,
The beating pressure unit
A pulsatile fluid transfer device formed in a different pulsating pressurizing shape in a plurality of different pressurizing sections divided to correspond to the pulsating waveform. In claim 2,
The pulsating pressurizing unit includes a plurality of pressurizing units having different pulsating pressurizing shapes corresponding to a plurality of different pressing sections. In claim 1,
The pressure-bearing part has elasticity, and the shape is deformed according to the pressing force, and the pulsatile fluid conveying device includes a tube that maintains a circular shape according to the restoring force. In claim 4,
The pressurized portion is provided long in the longitudinal direction of the housing formed in a hollow shape, and at least one pulsatile fluid transfer device is provided along the inner circumferential surface of the housing. In claim 4,
The pressurized portion is provided long in the longitudinal direction of the housing formed in a hollow shape, and is provided in a convex protruding shape from the outer surface of the tube along the longitudinal direction of the tube to guide the tube to be coupled to the inner surface of the housing. A pulsatile fluid transfer device further comprising a. In claim 6,
The fixing protrusion is a pulsatile fluid transfer device that is integrally formed with the tube. In claim 6,
The housing is a pulsatile fluid transport device having a concave groove-shaped guide groove into which the fixing protrusion is inserted and fixed along the longitudinal direction of the housing at a position corresponding to the part to be pressed. In claim 8,
the housing is
A body formed in a cylindrical shape and provided with the guide groove along the longitudinal direction of the inner surface;
A first cover provided on an open side of the main body and having an eleventh hole through which the tube passes, and
A second cover provided on the other open side of the main body and having a twelfth hole through which the tube passes.
A pulsatile fluid transport device comprising a. In claim 9,
The guide groove is
A first groove formed in a concave shape corresponding to the outer shape of the tube on the inner surface of the main body to support the seating of the tube, and
A second groove formed in a concave shape corresponding to the outer shape of the fixing protrusion on the inner surface of the first groove to support the coupling of the fixing protrusion
A pulsatile fluid transport device comprising a. In claim 1,
the rotating body
A pulsatile fluid transfer device provided in plurality with the pressurized portion interposed therebetween. In claim 11,
the rotating body
A first rotating body provided on one side with the part to be pressed therebetween, and
A pulsatile fluid transfer device including a second rotating body provided on the other side to correspond to the first rotating body. In claim 12,
The beating pressure unit
A first pulsating pressing unit provided on the outer peripheral surface of the first rotating body, and
A pulsatile fluid transfer device including a second pulsating pressure unit provided on an outer circumferential surface of the second rotating body. In claim 13,
The pressurized part
A tube that has elasticity and is deformed in shape according to a pressing force and maintains a circular shape according to a restoring force; and
A protrusion formed to be elongated along the longitudinal direction of the tube from the inner surface of the tube, and protruded from opposite positions in the direction of the center of the tube.
includes,
A pulsatile fluid conveying device for forming a first beating pressurizing region that is pressed in response to the pressing force of the first beating pressurizing unit and a second beating pressing region that is pressurized in response to the pressing force of the second beating pressurizing unit. In claim 1,
an inlet chamber provided on an open side of the tube and having an inlet in communication with the tube to form a fluid inlet path; and
A discharge chamber provided on the open other side of the tube and having an outlet communicating with the tube to form a fluid discharge path
A pulsatile fluid transport device comprising a. In claim 12,
A pulsatile fluid conveying device further comprising a power transmitting unit for transmitting the power of the driving unit to the rotating body. 17. In claim 16,
The power transmission unit
a worm gear rotated by receiving power from the driving unit;
a first worm wheel provided on one side of the worm gear to transmit the power of the worm gear to the first rotating body; and
A second worm wheel provided on the other side of the worm gear to transmit the power of the worm gear to the second rotating body
A pulsatile fluid transport device comprising a. 17. In claim 16,
The power transmission unit
a first gear rotated by receiving the power of the driving unit, and transmitting the power of the driving unit to the first rotating body; and
A pulsatile fluid conveying device comprising a second gear rotated in engagement with the first gear and transmitting the power of the first gear to the second rotating body.

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