Pressurized blood conveying device for cardiovascular diseases

Abstract

The invention discloses a pressurized blood conveying device for cardiovascular diseases, and relates to the technical field of medical equipment. Aiming at the situation of high blood pressure or large blood flow resistance clinically, the pressurizing chamber is combined with planetary gear transmission, the rotating speed of the rotating circular steel plate is regulated and controlled through cooperation of the limiting electromagnet and the friction rotating disc, paddle stirring is replaced with a friction mode, and damage to blood active ingredients and conveying noise are remarkably reduced. The layout of the multiple plasma output pipes and the independent electric valves can be rapidly switched when a single path is abnormal, and it is ensured that blood supply is not interrupted. And safe, efficient and controllable blood delivery can be realized in diversified blood transfusion requirements.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, in particular to a pressurized blood delivery device for cardiovascular diseases. Background Art

[0002] In traditional blood delivery systems, it is common to rely on gravity to drip naturally or a simple fixed-speed ratio pump to transfer blood from the blood bag into the patient's body. However, when the patient's blood pressure is high or the blood flow resistance is large, traditional methods often make it difficult to press the blood into the body in time, which may lead to low blood supply efficiency or interruption. In addition, many existing devices use a paddle structure to push the blood, but the rotation of the paddle will generate large eddy currents and noise, and there is also a certain degree of risk of damage to blood proteins or active ingredients. Most existing devices also lack multi-channel switching functions when the output pipeline is blocked. Once the blood transfusion tube or valve fails, it is easy to cause blood supply interruption in an emergency. Summary of the invention

[0003] In order to overcome the defects of the above-mentioned prior art, the present invention provides the following technical solutions: a pressurized blood delivery device for cardiovascular diseases, comprising a boosting chamber, in which a plurality of equidistantly arranged rotating circular steel plates are rotatably installed, and a connecting through hole is provided at the center of each rotating circular steel plate for connecting the gaps between all the rotating circular steel plates, and the axes of all the rotating circular steel plates are fixed as a whole by a rotating steel plate fixing shaft, and all the rotating circular steel plates are rotatably installed in the boosting chamber by a rotating steel plate fixing shaft; a guide chamber is rotatably sealed at the axial position of the outer surface of the boosting chamber, the guide chamber is connected to the inside of the boosting chamber, and a blood inlet tube is fixedly connected at the radial position of the outer surface of the guide chamber, and a protective rotating cover is provided on the outer fixed sleeve of the guide chamber, wherein the blood inlet tube penetrates to the outside of the protective rotating cover, and the protective rotating cover and the boosting chamber are rotationally sealed in cooperation.

[0004] Preferably, both ends of the rotating steel plate fixing shaft are provided with hexagonal grooves, and shock-absorbing rubber pads are filled in the two hexagonal grooves. A rotating axle is slidably inserted in one of the hexagonal grooves by means of a spline, and the rotating axle is rotationally connected to the axial position of the inner wall of the boost chamber; a transmission spline shaft is slidably inserted in the other hexagonal groove by means of a spline, and a rotating transmission shaft coaxial with the rotating steel plate fixing shaft is fixedly installed on the transmission spline shaft.

[0005] Preferably, one end of the rotating transmission shaft away from the rotating steel plate fixing shaft extends to the outside of the protective rotating cover, and a gear ring disk fixedly matched with the rotating transmission shaft is rotatably mounted on the outer surface of the protective rotating cover.

[0006] Preferably, a discharge port is fixedly connected at a tangent position on the outer surface of the boost chamber, three electric valves are installed on the discharge port through a diverter nozzle, and a plasma output tube is connected to the three electric valves; a plasma input tube is connected to the blood inlet tube, and the plasma input tube and all the plasma output tubes extend to the outside of the protective shell; wherein the protective shell is used to wrap and fix the boost chamber and the protective rotating cover.

[0007] Preferably, a central gear is rotatably matched at the center of the gear ring disk, and the central gear and the gear ring disk are meshed and transmitted through at least two planetary hollow gears, and a hollow gear supporting shaft is fixedly provided at the axial position of each planetary hollow gear, and a hollow gear limiting spline shaft is fixed on each hollow gear supporting shaft. All planetary hollow gears are rotatably installed on the friction rotating disk through the hollow gear supporting shaft, and a limiting friction ring is coaxially fixed on the friction rotating disk, and an electromagnetic coil is also embedded in the friction rotating disk.

[0008] Preferably, the outer rotating sleeve of the gear ring disk, the limiting friction ring and the friction rotating disk is provided with a rotating support ring block, and the rotating support ring block is fixedly matched with the protective rotating cover, wherein a limiting electromagnet sliding groove is opened on the inner side of the rotating support ring block, and a limiting electromagnet is slidingly arranged in the limiting electromagnet sliding groove, and a reset elastic component is fixed between the limiting electromagnet and the inner wall of the limiting electromagnet sliding groove, and the reset elastic component is used to pull the limiting electromagnet to move in the direction away from the limiting friction ring, wherein the limiting electromagnet and the limiting friction ring are magnetically matched.

[0009] Preferably, the side of the friction rotating disk away from the gear ring disk is provided with the same number of magnetic friction limiting plates as the planetary hollow gears, the magnetic friction limiting plates are slidably mounted on the hollow gear limiting spline shaft by means of splines, and a magnetic reset plate is magnetically matched on the side of each magnetic friction limiting plate, and each magnetic reset plate is fixed to the end of the corresponding hollow gear limiting spline shaft, wherein the magnetic friction limiting plate is frictionally matched with the friction rotating disk.

[0010] Preferably, a drive motor bracket cover is fixedly mounted on the rotating support ring block, a drive motor is fixedly mounted on the drive motor bracket cover, and an output shaft of the drive motor passes through the friction rotating disk and is fixedly matched with the central gear.

[0011] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention can flexibly adjust the degree of revolution restriction of the planetary hollow gear by means of the electromagnetic attraction between the limiting electromagnet and the limiting friction ring, thereby changing the transmission ratio between the central gear and the gear ring disk, and then controlling the rotation speed of the rotating circular steel plate. Multi-level speed regulation can be achieved by simply changing the amount of power supplied to the electromagnet, which can not only meet the diverse needs of different patients for blood flow rate, but also reduce the limitation of being unable to adapt to a variety of blood transfusion scenarios due to the fixed mechanical structure; (2) The present invention drives the blood to rotate through friction instead of using paddle stirring, avoiding eddy currents and turbulences that are easily caused by the blade-type conveying structure, effectively reducing the excessive shear force on the blood during the conveying process, and reducing the damage to blood components and the generation of noise. Especially when transporting media such as plasma that need to maintain active ingredients, this bladeless design can make the blood flow more stably, which not only ensures the transmission efficiency but also reduces the patient's physiological discomfort; (3) The present invention adds multiple plasma output tubes and independent electric valves. When one of the output tubes or valves is blocked, fails or abnormal, medical staff can quickly switch to other output tubes to maintain blood supply, ensuring the continuity of clinical blood transfusion and avoiding the interruption of blood transfusion due to the failure of a single path. At the same time, by adjusting the opening and closing degree of the electric valve, the pressure and flow of the output blood can be more accurately controlled to improve the safety and controllability of blood delivery; (4) When the limiting electromagnet of the present invention is completely powered off, the transmission path between the rotating circular steel plate and the central gear can be cut off to achieve zero output speed; and if the electromagnetic coil of the friction rotating disk is further started, the friction rotating disk attracts the magnetic friction limiting plate, then the planetary hollow gear will not rotate at all, so that the central gear and the rotating circular steel plate are in a 1:1 transmission ratio, thereby obtaining the maximum speed. This multi-mode switching greatly improves the application flexibility of the device during blood transfusion for patients with hypertension and hypotension. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0013] Figure 2 It is a structural schematic diagram of the diversion nozzle of the present invention.

[0014] Figure 3 It is a schematic diagram of the structure of the sliding groove of the limiting electromagnet of the present invention.

[0015] Figure 4 It is a schematic diagram of the internal structure of the booster chamber of the present invention.

[0016] Figure 5 For the present invention Figure 4 Schematic diagram of the structure at point A in the middle.

[0017] Figure 6 It is a schematic diagram of the structure of the connecting through hole of the present invention.

[0018] Figure 7 This is a schematic diagram of the structure of the friction limiting ring of the present invention.

[0019] Figure 8 For the present invention Figure 7 Schematic diagram of the structure at point B in the middle.

[0020] Fig. 9 It is a structural schematic diagram of the magnetic reset plate of the present invention.

[0021] In the figure: 101-pressurization chamber; 102-discharge port; 103-diverter nozzle; 104-protective rotating cover; 105-diversion chamber; 106-blood inlet tube; 107-toothed ring disk; 108-rotating transmission shaft; 109-rotating shaft; 110-shock-absorbing rubber pad; 111-transmission spline shaft; 112-rotating circular steel plate; 113-rotating steel plate fixing shaft; 114-hexagonal groove; 115-connecting through hole; 116-rotating support ring block; 117-limiting friction ring; 118 -limiting electromagnet; 119-reset elastic component; 120-limiting electromagnet sliding groove; 121-friction rotating disk; 122-magnetic reset plate; 123-magnetic friction limiting plate; 124-driving motor; 125-planetary hollow gear; 126-center gear; 127-hollow gear supporting shaft; 128-hollow gear limiting spline shaft; 129-plasma output tube; 130-electric valve; 131-plasma input tube; 132-driving motor bracket cover; 133-protective shell. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1-9 , and further illustrate the technical solution of the present invention through specific implementation methods.

[0023] The present invention provides a pressurized blood delivery device for cardiovascular diseases, comprising a pressurizing chamber 101, wherein a plurality of rotating circular steel plates 112 arranged at equal intervals are rotatably installed in the pressurizing chamber 101, wherein a connecting through hole 115 is arranged at the center of each rotating circular steel plate 112, for connecting the gaps between all the rotating circular steel plates 112, wherein the axis of all the rotating circular steel plates 112 is fixed as a whole through a rotating steel plate fixing shaft rod 113, and all the rotating circular steel plates 112 are fixed together through the rotating steel plate fixing shaft rod 113. 3 is rotatably installed in the boost chamber 101; a guide chamber 105 is rotatably sealed at the axial position of the outer surface of the boost chamber 101, the guide chamber 105 is connected with the inside of the boost chamber 101, and a blood inlet tube 106 is fixedly connected at the radial position of the outer surface of the guide chamber 105, and a protective rotating cover 104 is fixedly sleeved on the outer side of the guide chamber 105, wherein the blood inlet tube 106 penetrates to the outer side of the protective rotating cover 104, wherein the protective rotating cover 104 and the boost chamber 101 are rotatably sealed. Both ends of the rotating steel plate fixing shaft 113 are provided with hexagonal grooves 114, and shock-absorbing rubber pads 110 are filled in the two hexagonal grooves 114. A rotating shaft 109 is slidably inserted in one of the hexagonal grooves 114 in a spline manner, and the rotating shaft 109 is rotatably connected to the axial position of the inner wall of the boost chamber 101; a transmission spline shaft 111 is slidably inserted in the other hexagonal groove 114 in a spline manner, and a rotating transmission shaft 108 coaxial with the rotating steel plate fixing shaft 113 is fixedly installed on the transmission spline shaft 111. The end of the rotating transmission shaft 108 away from the rotating steel plate fixing shaft 113 extends to the outside of the protective rotating cover 104, and a gear ring disk 107 fixedly matched with the rotating transmission shaft 108 is also rotatably installed on the outer surface of the protective rotating cover 104. A discharge port 102 is fixedly connected at a tangent position on the outer surface of the booster chamber 101, and three electric valves 130 are installed on the discharge port 102 through a diverter nozzle 103, and the three electric valves 130 are all connected to a plasma output tube 129; a plasma input tube 131 is connected to the blood inlet tube 106, and the plasma input tube 131 and all the plasma output tubes 129 extend to the outside of the protective shell 133; wherein the protective shell 133 is used to wrap and fix the booster chamber 101 and the protective rotating cover 104. A central gear 126 is rotatably fitted at the center of the gear ring disk 107, and the central gear 126 and the gear ring disk 107 are meshed and transmitted through at least two planetary hollow gears 125, and a hollow gear supporting shaft 127 is fixedly provided at the axial position of each planetary hollow gear 125, and a hollow gear limiting spline shaft 128 is fixed on each hollow gear supporting shaft 127. All planetary hollow gears 125 are rotatably mounted on the friction rotating disk 121 through the hollow gear supporting shaft 127, and a limiting friction ring 117 is coaxially fixed on the friction rotating disk 121, and an electromagnetic coil is also embedded in the friction rotating disk 121.

[0024] The outer rotating sleeve of the gear ring disk 107, the limiting friction ring 117 and the friction rotating disk 121 is provided with a rotating support ring block 116, and the rotating support ring block 116 is fixedly matched with the protective rotating cover 104, wherein a limiting electromagnet sliding groove 120 is opened on the inner side of the rotating support ring block 116, and a limiting electromagnet 118 is slidingly arranged in the limiting electromagnet sliding groove 120, and a reset elastic component 119 is fixed between the limiting electromagnet 118 and the inner wall of the limiting electromagnet sliding groove 120, and the reset elastic component 119 is used to pull the limiting electromagnet 118 to move in the direction away from the limiting friction ring 117, wherein the limiting electromagnet 118 and the limiting friction ring 117 are magnetically matched. The side of the friction rotating disk 121 away from the gear ring disk 107 is provided with the same number of magnetic friction limiting plates 123 as the planetary hollow gear 125. The magnetic friction limiting plates 123 are slidably sleeved on the hollow gear limiting spline shaft 128 by means of splines, and the side of each magnetic friction limiting plate 123 is magnetically matched with a magnetic reset plate 122, and each magnetic reset plate 122 is fixed to the end of the corresponding hollow gear limiting spline shaft 128, wherein the magnetic friction limiting plates 123 are frictionally matched with the friction rotating disk 121. A drive motor bracket cover 132 is fixedly mounted on the rotating support ring block 116, and a drive motor 124 is fixedly mounted on the drive motor bracket cover 132, and the output shaft of the drive motor 124 passes through the friction rotating disk 121 and is fixedly matched with the central gear 126.

[0025] The working principle of a pressurized blood delivery device for cardiovascular disease disclosed in the present invention is as follows: the components inside the protective shell 133 can be taken out from the protective shell 133 in an easily disassembled manner (after being installed inside the protective shell 133, the booster chamber 101, the protective rotating cover 104, and the rotating support ring block 116 are all in a fixed state with the inner wall of the protective shell 133, and the protective rotating cover 104 is provided to cooperate with the rotating seal of the booster chamber 101 to cope with different scenarios, so that the blood inlet tube 106 is closest to the blood bag, and the shape of the protective shell 133 and the direction of the blood inlet tube 106 need to be adjusted according to actual conditions), and its purpose is to be replaced and cleaned. In some cases, the patient's blood pressure is too high, resulting in the inability of external blood to be directly delivered to the patient's body by gravity, so it is necessary to provide pressure to the blood supply source.

[0026] When in use, medical staff connects the plasma output tube 129 to the blood transfusion tube and then supplies blood to the patient. Multiple plasma output tubes 129 and electric valves 130 are provided so that if the blood transfusion tube cannot transfuse blood normally due to external factors such as the plasma output tube 129 or the electric valve 130, another plasma output tube 129 can be selected for blood supply. The plasma input tube 131 is directly connected to the blood bag. Start the driving motor 124 and the limiting electromagnet 118, and the output shaft of the driving motor 124 drives the central gear 126 to rotate. At the same time, the limiting electromagnet 118 will generate magnetic force after being energized, thereby forming mutual attraction with the limiting friction ring 117. At this time, the limiting electromagnet 118 overcomes the pulling force of the reset elastic component 119 and moves toward the limiting friction ring 117, and contacts and rubs with the limiting friction ring 117. The friction force between the limiting friction ring 117 and the limiting electromagnet 118 depends on the magnetic force of the limiting electromagnet 118. Therefore, the resistance encountered by the limiting friction ring 117 during rotation can be controlled by controlling the magnetic force of the limiting electromagnet 118. The rotation of the center gear 126 will drive the gear ring disk 107 to rotate through the planetary hollow gear 125. During this process, the planetary hollow gear 125 cannot revolve or is restricted by the restriction of the friction rotating disk 121 (the friction rotating disk 121 is fixed to the limiting friction ring 117). At this time, the gear ring disk 107 will drive the rotating transmission shaft 108 to rotate. The rotating transmission shaft 108 drives the rotating steel plate fixing shaft 113 to rotate through the transmission spline shaft 111. The rotating steel plate fixing shaft 113 drives all the rotating circular steel plates 112 to rotate. The device needs to be filled with blood first (when connecting a blood bag, it assists in applying external pressure to squeeze the blood into the booster chamber 101). The rotation of all the rotating circular steel plates 112 will drive the blood to rotate through friction. In this process, since there is no participation of blades, the problems such as eddy currents and turbulence caused by the rotation of the blades will be solved (noise reduction). The blood rotates due to the friction (viscosity) of the rotating circular steel plate 112. The rotating blood flows toward the inner wall of the booster chamber 101 under the action of centrifugal force, and then is discharged to the diverter nozzle 103 through the discharge port 102. It is distributed to the plasma output tube 129 through the diverter nozzle 103. The opening and closing degree of the corresponding electric valve 130 needs to be controlled. The electric valve 130 is used to control the pressure of the output blood.

[0027] If the magnitude of the magnetic force of the limiting electromagnet 118 is adjusted, the limiting force limiting the rotation of the friction ring 117 may change, and the degree of restriction of the revolution of the planetary hollow gear 125 may also change. When the planetary hollow gear 125 does not revolve at all, the transmission ratio between the central gear 126 and the gear ring disk 107 is the highest. When the planetary hollow gear 125 is restricted from revolving, the transmission ratio between the central gear 126 and the gear ring disk 107 will decrease, thereby controlling the rotation speed of the rotating circular steel plate 112. At the same time, the limiting electromagnet 118 is completely powered off, and the transmission path between the rotating circular steel plate 112 and the central gear 126 can also be cut off. In addition, the electromagnetic coil arranged inside the friction rotating disk 121 can be started (powered by the collector ring) to allow the friction rotating disk 121 to generate magnetic force, and the friction rotating disk 121 attracts the magnetic friction limiting plate 123. The magnetic force of the friction rotating disk 121 on the magnetic friction limiting plate 123 is greater than the magnetic force between the magnetic friction limiting plate 123 and the magnetic reset plate 122. At this time, the magnetic friction limiting plate 123 will contact the friction rotating disk 121, and lock the magnetic friction limiting plate 123 on the friction rotating disk 121 through friction, so that there is no relative rotation between the magnetic friction limiting plate 123 and the friction rotating disk 121, and the planetary hollow gear 125 will not rotate on its own, which will cause the transmission ratio between the center gear 126 and the rotating circular steel plate 112 to be 1, so that the rotating circular steel plate 112 can obtain the maximum rotation speed.

Claims

1. A pressurized blood delivery device for cardiovascular disease, characterized in that: The invention comprises a boost chamber (101), wherein a plurality of equidistantly arranged rotating circular steel plates (112) are rotatably mounted in the boost chamber (101), a connecting through hole (115) is arranged at the center of each rotating circular steel plate (112) for connecting the gaps between all the rotating circular steel plates (112), the axes of all the rotating circular steel plates (112) are fixed as a whole via a rotating steel plate fixing shaft rod (113), and all the rotating circular steel plates (112) are rotatably mounted in the boost chamber (101) via the rotating steel plate fixing shaft rod (113); A flow guide chamber (105) is installed in a rotary seal at an axial position of the outer surface of the boost chamber (101); the flow guide chamber (105) is connected to the inside of the boost chamber (101); a blood inlet tube (106) is fixedly connected to the radial position of the outer surface of the flow guide chamber (105); a protective rotating cover (104) is fixedly provided on the outer side of the flow guide chamber (105); the blood inlet tube (106) extends to the outside of the protective rotating cover (104); and the protective rotating cover (104) and the boost chamber (101) are rotary sealed.

2. A pressurized blood delivery device for cardiovascular disease according to claim 1, characterized in that: Both ends of the rotating steel plate fixed shaft (113) are provided with hexagonal grooves (114), and shock-absorbing rubber pads (110) are filled in the two hexagonal grooves (114). A rotating shaft (109) is slidably inserted in one of the hexagonal grooves (114) by means of a spline, and the rotating shaft (109) is rotationally connected to the axial position of the inner wall of the boost chamber (101); a transmission spline shaft (111) is slidably inserted in the other hexagonal groove (114) by means of a spline, and a rotating transmission shaft (108) coaxial with the rotating steel plate fixed shaft (113) is fixedly installed on the transmission spline shaft (111).

3. A pressurized blood delivery device for cardiovascular disease according to claim 2, characterized in that: One end of the rotary transmission shaft (108) away from the rotary steel plate fixing shaft (113) extends to the outside of the protective rotary cover (104), and a gear ring disk (107) fixedly matched with the rotary transmission shaft (108) is rotatably mounted on the outer surface of the protective rotary cover (104).

4. A pressurized blood delivery device for cardiovascular disease according to claim 3, characterized in that: A discharge port (102) is fixedly connected and provided at a tangential position on the outer surface of the boost chamber (101); three electric valves (130) are installed on the discharge port (102) through a diversion nozzle (103); and the three electric valves (130) are all connected and provided with a plasma output tube (129); a plasma input tube (131) is connected and provided on the blood inlet tube (106); the plasma input tube (131) and all the plasma output tubes (129) extend to the outside of a protective shell (133); wherein the protective shell (133) is used to wrap and fix the boost chamber (101) and the protective rotating cover (104).

5. A pressurized blood delivery device for cardiovascular disease according to claim 4, characterized in that: A central gear (126) is rotatably matched at the center of the gear ring disk (107), and the central gear (126) and the gear ring disk (107) are meshed and transmitted via at least two planetary hollow gears (125), and a hollow gear support rotating shaft (127) is fixedly provided at the axis center position of each planetary hollow gear (125), and a hollow gear limiting spline shaft (128) is fixed on each hollow gear support rotating shaft (127), and all the planetary hollow gears (125) are rotatably mounted on the friction rotating disk (121) via the hollow gear support rotating shaft (127), and a limiting friction ring (117) is coaxially fixed on the friction rotating disk (121), and an electromagnetic coil is also embedded in the friction rotating disk (121).

6. A pressurized blood delivery device for cardiovascular disease according to claim 5, characterized in that: The outer rotating sleeves of the gear ring disk (107), the limiting friction ring (117) and the friction rotating disk (121) are provided with a rotating support ring block (116), and the rotating support ring block (116) is fixedly matched with the protective rotating cover (104), wherein a limiting electromagnet sliding groove (120) is provided on the inner side of the rotating support ring block (116), and a limiting electromagnet (118) is slidingly arranged in the limiting electromagnet sliding groove (120), and a reset elastic component (119) is fixed between the limiting electromagnet (118) and the inner wall of the limiting electromagnet sliding groove (120), and the reset elastic component (119) is used to pull the limiting electromagnet (118) to move in a direction away from the limiting friction ring (117), wherein the limiting electromagnet (118) and the limiting friction ring (117) are magnetically matched.

7. A pressurized blood delivery device for cardiovascular disease according to claim 6, characterized in that: The same number of magnetic friction limiting plates (123) as the planetary hollow gear (125) is arranged on one side of the friction rotating disk (121) away from the gear ring disk (107); the magnetic friction limiting plates (123) are slidably mounted on the hollow gear limiting spline shaft (128) in a spline manner; and a magnetic reset plate (122) is magnetically matched on the side of each magnetic friction limiting plate (123); each magnetic reset plate (122) is fixed to the end of the corresponding hollow gear limiting spline shaft (128), wherein the magnetic friction limiting plates (123) are frictionally matched with the friction rotating disk (121).

8. A pressurized blood delivery device for cardiovascular disease according to claim 7, characterized in that: A driving motor support cover (132) is fixedly mounted on the rotating support ring block (116), a driving motor (124) is fixedly mounted on the driving motor support cover (132), and an output shaft of the driving motor (124) passes through the friction rotating disk (121) and is fixedly matched with the central gear (126).

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