Intravenous cardiac assist device and interventional treatment equipment using the same

Abstract

The present invention relates to the field of medical device technology, and in particular to a venous heart assist device and an interventional treatment device using the same. The venous heart assist device includes: a balloon catheter, a first balloon, a second balloon and a third balloon; when in use, first control the inflation of the second balloon to expand it in the right atrium; then control the inflation of the first balloon and the third balloon to expand them in the superior vena cava and the inferior vena cava respectively; thereafter, control the deflation of the second balloon to form a negative pressure in the right atrium; then control the deflation of the first balloon and the third balloon. The present invention uses three balloons, and at the same time combines the coordination of corresponding control timings, which can effectively improve the function of the right atrium, improve the perfusion effect, help improve microcirculation disorders, speed up the microblood flow rate, improve ischemia and hypoxia, and provide good assistance to microcirculation, which is conducive to promotion and application.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a venous cardiac assist device and interventional treatment equipment using the same. Background Art

[0002] At present, intra-aortic balloon pump (IABP) is the earliest auxiliary circulation method based on the oxygen supply and consumption theory. It was first used in clinical practice in 1968. In the early days, IABP was mainly used to support the circulation of patients with hemodynamic instability, cardiogenic shock or heart failure during cardiac perioperative period. It usually required surgical vascular incision and implantation of the intra-aortic balloon. The emergence of percutaneous puncture technology in the 1980s has made IABP have the advantages of less trauma, fewer complications and simple operation.

[0003] IABP is a device that uses the principle of "counterpulsation" to operate synchronously with the cardiac cycle of the heart, thereby increasing the blood flow in the coronary arteries and reducing the afterload of the heart. A catheter with an air balloon is implanted at the proximal end of the descending aorta. During the cardiac systole, the gas in the air balloon is rapidly vented, causing an instantaneous drop in aortic pressure, a decrease in cardiac ejection resistance, a decrease in cardiac afterload, an increase in cardiac output, and a decrease in myocardial oxygen consumption. During the diastolic phase, the aortic valve closes and the air balloon is rapidly filled to drive blood to both sides of the aorta, thereby increasing the diastolic pressure at the aortic root, increasing coronary blood flow and myocardial oxygen supply, and increasing systemic perfusion. However, the above-mentioned balloon catheter device in the prior art often uses one balloon and is only used in the field of coronary artery perfusion. However, it is rarely used in the field of coronary veins, and the balloon catheter device in the prior art is not ideal when used.

[0004] The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Summary of the invention

[0005] The purpose of the present invention is to provide a venous cardiac assist device and an interventional treatment device using the same, which can effectively improve the function of the right atrium, enhance the perfusion effect of the coronary vein, help improve microcirculation disorders, accelerate the microblood flow rate, improve ischemia and hypoxia, and achieve a good improvement in microcirculation.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] In a first aspect, the present invention provides a venous cardiac assist device, comprising: a balloon catheter, a first balloon, a second balloon and a third balloon; the distal end of the balloon catheter is sequentially inserted into the first balloon, the second balloon and the third balloon, and the first balloon, the second balloon and the third balloon are respectively controlled by independent air circuits so that each balloon can be selectively inflated and deflated.

[0008] As a further technical solution, the venous cardiac assist device also includes: a balloon pump group, which is arranged at the proximal end of the balloon catheter and is respectively connected to the first balloon, the second balloon and the third balloon through independent air paths.

[0009] As a further technical solution, the venous cardiac assist device also includes: a control system, which is connected to the balloon pump group, and the control system is used to send at least one set of action instructions to the balloon pump group, each set of action instructions includes in sequence according to timing control: a second balloon inflation instruction, a first balloon and a third balloon inflation instruction, a second balloon deflation instruction, and a first balloon and a third balloon deflation instruction, and the balloon pump group performs corresponding inflation and deflation actions according to the action instructions.

[0010] As a further technical solution, the venous cardiac assist device also includes: a pressure sensing device, which is connected to the control system, and is used to respectively detect the pressures of the first balloon, the second balloon and the third balloon and feed back to the control system.

[0011] As a further technical solution, the venous heart assist device also includes: an electrocardiogram sensor device, which is connected to the control system and is used to detect a cardiac signal spectrum and feed it back to the control system.

[0012] As a further technical solution, the maximum expansion volume of the first balloon and the third balloon are both smaller than the maximum expansion volume of the second balloon.

[0013] As a further technical solution, the balloon catheter has multiple lumen structures, and the multiple lumen structures include at least a central lumen arranged through and three air path lumens arranged around the central lumen, and the three air path lumens are respectively connected to the first balloon, the second balloon and the third balloon.

[0014] As a further technical solution, the first balloon, the second balloon and the third balloon are all provided with a developing part.

[0015] By adopting the technical solution of the first aspect, the present invention has the following beneficial effects:

[0016] The present invention provides a venous heart assist device, which uses a balloon catheter to deliver a first balloon, a second balloon and a third balloon to the superior vena cava, the right atrium and the inferior vena cava respectively. When in use, firstly, the second balloon is controlled to be inflated so that it expands in the right atrium; then, the first balloon and the third balloon are controlled to be inflated so that they expand in the superior vena cava and the inferior vena cava respectively; thereafter, the second balloon is controlled to be deflated so that negative pressure is formed in the right atrium; then, the first balloon and the third balloon are controlled to be deflated. The present invention adopts three balloons and combines the corresponding control timing to effectively improve the function of the right atrium, improve the perfusion effect, help improve microcirculation disorders, accelerate the microblood flow rate, improve the ischemic and hypoxic conditions, and provide good help to the microcirculation, which is conducive to promotion and application.

[0017] In a second aspect, the present invention also provides an interventional treatment device, which includes the above-mentioned venous cardiac assist device. In particular, the venous cardiac assist device includes: a balloon catheter, a first balloon, a second balloon and a third balloon; the distal end of the balloon catheter is sequentially inserted into the first balloon, the second balloon and the third balloon, and the first balloon, the second balloon and the third balloon are respectively controlled by independent air circuits so that each balloon can be selectively inflated and deflated. Of course, other features have been described above and will not be repeated here.

[0018] By adopting the above-mentioned second technical solution, the present invention has the following beneficial effects:

[0019] The present invention provides an interventional treatment device, which includes the above-mentioned intravenous cardiac assist device and thus has the same beneficial effects as the intravenous cardiac assist device. Moreover, the interventional treatment device can be applied not only to coronary vein interventional treatment, but also to other fields, and has strong versatility, which is conducive to promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the structure of a venous cardiac assist device provided by an embodiment of the present invention;

[0022] Figure 2 A schematic diagram of a use state of a venous cardiac assist device provided by an embodiment of the present invention;

[0023] Figure 3 A schematic structural diagram of a venous cardiac assist device provided in another embodiment of the present invention.

[0024] Icons: 1-superior vena cava; 2-first balloon; 3-right atrium; 4-second balloon; 5-inferior vena cava; 6-third balloon; 7-balloon catheter; 8-balloon pump set; 9-ECG sensor device; 10-control system; 11-pressure sensor device. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0027] Embodiment 1

[0028] Combination Figures 1 to 3 As shown, this embodiment provides a venous cardiac assist device, which includes: a balloon catheter 7, a first balloon 2, a second balloon 4 and a third balloon 6; the distal end of the balloon catheter 7 is sequentially inserted into the first balloon 2, the second balloon 4 and the third balloon 6. It can be understood that the first balloon 2, the second balloon 4 and the third balloon 6 are sequentially arranged at the distal end of the balloon catheter 7. Of course, the spacing distance between each balloon can be flexibly set according to actual needs. Similarly, the size of each balloon can also be formulated into corresponding specific specifications according to different situations, which is no longer limited here. Preferably, the maximum expansion volume of the first balloon 2 and the third balloon 6 is smaller than the maximum expansion volume of the second balloon 4. Moreover, the first balloon 2, the second balloon 4 and the third balloon 6 are respectively controlled by independent air circuits so that each balloon can be selectively inflated and deflated.

[0029] Therefore, in this embodiment, the first balloon 2 , the second balloon 4 , and the third balloon 6 can be delivered to the superior vena cava 1 , the right atrium 3 , and the inferior vena cava 5 respectively through the balloon catheter 7 .

[0030] When in use, first, control the inflation of the second balloon 4 to expand it in the right atrium 3; then control the inflation of the first balloon 2 and the third balloon 6 to expand them in the superior vena cava 1 and the inferior vena cava 5 respectively to form a sealing effect; thereafter, control the deflation of the second balloon 4 to form a negative pressure in the right atrium 3; then control the deflation of the first balloon 2 and the third balloon 6.

[0031] According to the principle of IABP, at the beginning of diastole, the second balloon 4 is inflated first, and then the first balloon 2 and the third balloon 6 are inflated; before the heart contracts, the second balloon 4 is deflated first, and then the first balloon 2 and the third balloon 6 are deflated. In this way, the deflation is synchronized with the cardiac cycle to achieve the function of auxiliary circulation. Moreover, this embodiment uses three balloons, and at the same time, combined with the coordination of corresponding control timing, it can effectively improve the function of the right atrium, improve the perfusion effect, help improve microcirculation disorders, speed up the microblood flow rate, improve the ischemic and hypoxic conditions, and provide good assistance to the microcirculation, which is conducive to promotion and application.

[0032] In this embodiment, in order to ensure that each gas circuit can be independently controlled. Preferably, the intravenous cardiac assist device also includes: a balloon pump group 8, the balloon pump group 8 is arranged at the proximal end of the balloon catheter 7, and the balloon pump group 8 is respectively connected to the first balloon 2, the second balloon 4 and the third balloon 6 through each independent gas circuit. Furthermore, the balloon pump group 8 is also connected to the air source device, and the air source device preferably uses nitrogen, which is non-toxic and harmless and has high safety. Of course, ordinary technicians in this field can also make further improvements on this basis, such as: adding an air compressor or a gas filter, etc.

[0033] In this embodiment, in order to facilitate the control of the timing of balloon counterpulsation, as a further technical solution, the intravenous heart assist device also includes: a control system 10, the control system 10 is connected to the balloon pump group 8, and the control system 10 is used to send at least one set of action instructions to the balloon pump group 8, and each set of action instructions includes: the second balloon 4 inflation instruction, the first balloon 2 and the third balloon 6 inflation instruction, the second balloon 4 deflation instruction, the first balloon 2 and the third balloon 6 deflation instruction in accordance with the timing control, and the balloon pump group 8 performs the corresponding inflation action and deflation action according to the sent action instructions. That is to say, first, the second balloon 4 is controlled to be inflated so that it expands in the right atrium 3; then the first balloon 2 and the third balloon 6 are controlled to be inflated so that they expand in the superior vena cava 1 and the inferior vena cava 5 respectively; then, the second balloon 4 is controlled to be deflated so that a negative pressure is formed in the right atrium 3; then the first balloon 2 and the third balloon 6 are controlled to be deflated.

[0034] The venous heart assist device of this embodiment can be controlled in time by the electrocardiogram QRS waveform. For example: the venous heart assist device also includes an electrocardiogram sensor 9, which is connected to the control system 10, and the electrocardiogram sensor 9 is used to detect the heart signal spectrum and feed it back to the control system 10. Preferably, the electrocardiogram sensor 9 is an electrocardiogram sensor.

[0035] In addition, as a further technical solution, the intravenous cardiac assist device further includes: a pressure sensing device 11, which is connected to the control system 10 and is used to detect the pressure of the first balloon 2, the second balloon 4 and the third balloon 6 respectively and feed back to the control system 10. The pressure sensing device 11 can monitor and feed back the pressure of the first balloon 2, the second balloon 4 and the third balloon 6 in real time, so that the first balloon 2, the second balloon 4 and the third balloon 6 can be monitored, and when the balloon leaks, it can be discovered in time.

[0036] Of course, in order to better serve as a reminder, the intravenous cardiac assist device also includes: an alarm device, which is connected to the control system 10. When the balloon leaks, it can alarm through sound and of course it can also flash with a warning light.

[0037] In this embodiment, as a further technical solution, the balloon catheter 7 has a plurality of lumen structures, which at least include a central lumen arranged through and three airway lumens arranged outside the central lumen (it can be understood that the three airway lumens and the central lumen are integrated into the interior of the balloon catheter 7), and the three airway lumens are respectively connected to the first balloon 2, the second balloon 4 and the third balloon 6. The overall structure of the balloon catheter 7 is more compact and is conducive to its delivery in the blood vessel.

[0038] In this embodiment, as a further technical solution, a plurality of openings are provided on the side wall of the distal end of the balloon catheter 7, and the plurality of openings are respectively connected to the central lumen. These plurality of openings can serve as suction ports for thrombi, and blood can be introduced into the body through the openings. Of course, these openings can also serve as delivery ports for therapeutic or diagnostic agents. Preferably, these openings are located between the first balloon 2 and the second balloon 4, or between the second balloon 4 and the third balloon 6.

[0039] In this embodiment, the connection relationship between the balloon and the corresponding airway lumen can be coaxially designed, that is, the airway lumen is arranged inside the balloon, and there is a gap between the airway lumen and the inner wall of the balloon. Of course, the connection relationship between the balloon and the corresponding airway lumen can also be arranged with a common wall, and the balloon and the corresponding airway lumen have a common arm, so that the gas shuttle area is larger and the gas shuttle resistance is smaller.

[0040] In this embodiment, the specific material of the balloon catheter 7 is not limited, and it can be made of a variety of materials. For example, the balloon catheter 7 includes a first structural layer (inner layer), a marker layer (middle layer) and a second structural layer (outer layer), and the first structural layer, the marker layer and the second structural layer are stacked from the inside to the outside. By making such a structure, it can be set to have desired characteristics such as suppressing the bending of the catheter body.

[0041] Preferably, as the constituent material of the first structural layer and the second structural layer, any one of polyamide resin, polyester polyamide resin, polyether polyamide resin, polyurethane, ABS resin, polyester elastomer resin, polyurethane elastomer resin, and fluorine resin (PFA, PTFE, ETFE, etc.) can be used. In particular, by using ABS resin or nylon as the constituent material of the first structural layer and the second structural layer, appropriate strength can be given to the top end of the main body. Moreover, by using a fluorine resin, preferably PTFE, in the first structural layer, the operability of the guide wire inserted into the lumen is improved.

[0042] Preferably, the material constituting the marker layer is preferably an X-ray non-transmissive material such as barium sulfate, bismuth trioxide, tungsten, etc. In addition, in the present embodiment, the balloon catheter 7 further includes: a reinforcement layer, which is arranged between any two adjacent layers of the first structural layer, the marker layer and the second structural layer. For example: the reinforcement layer can be a pre-buried metal mesh. Preferably, the mesh shape constituting the metal mesh is not particularly limited, and it can be made into, for example, a circular, approximately rectangular, or approximately elliptical shape. In addition, the reinforcement layer can also be a spiral linear structure, and the strength of the catheter can be easily adjusted according to the number of spiral turns.

[0043] In this embodiment, the first structural layer (inner layer), the marker layer (middle layer) and the second structural layer (outer layer) can be bonded to each other by a suitable adhesive, or connected by hot melting, or integrally formed by injection molding, etc. In addition, a person skilled in the art can make adaptability improvements to the balloon catheter 7 based on the above structure, for example, adding a hydrophilic coating to the surface of the balloon catheter 7 to increase its lubricity so as to facilitate pushing.

[0044] Preferably, in this embodiment, the first balloon 2, the second balloon 4 and the third balloon 6 are all provided with a developing part, so as to ensure that the position of each balloon can be confirmed under X-ray fluoroscopy. In this embodiment, the first balloon 2, the second balloon 4 and the third balloon 6 can also be improved, for example: each balloon can adopt a double-layer membrane structure, and the double-layer membranes are sleeved together, which can expand and contract synchronously to reduce the occurrence of air leakage. In addition, for each balloon, it can be made of macromolecular materials such as polyurethane, silicone rubber, silica gel or rubber, plastics such as polyethylene or polytetrafluoroethylene (PTFE) or biological membranes, and can also be made of other elastic materials.

[0045] In summary, the present invention provides a venous heart assist device, which uses a balloon catheter 7 to place a first balloon 2, a second balloon 4 and a third balloon 6 in the superior vena cava 1, the right atrium 3 and the inferior vena cava 5 respectively. When in use, first, the second balloon 4 is controlled to be inflated so that it expands in the right atrium 3; then the first balloon 2 and the third balloon 6 are controlled to be inflated so that they expand in the superior vena cava 1 and the inferior vena cava 5 respectively; thereafter, the second balloon 4 is controlled to be deflated so that a negative pressure is formed in the right atrium 3; then the first balloon 2 and the third balloon 6 are controlled to be deflated. The present invention adopts three balloons and combines them with the corresponding control timing to effectively improve the function of the right atrium, improve the perfusion effect, help improve microcirculation disorders, accelerate the microblood flow rate, improve the ischemic and hypoxic conditions, and provide good help to the microcirculation, which is conducive to promotion and application.

[0046] Embodiment 2

[0047] The second embodiment provides an interventional treatment device, which includes the intravenous cardiac assist device described in the first embodiment. The technical content disclosed in the first embodiment is also applicable to the second embodiment, and the technical features disclosed in the first embodiment are not described again. Only the differences between the two are described below. The interventional treatment device may include various types of equipment used in conjunction with the intravenous cardiac assist device.

[0048] For example, the interventional treatment equipment includes: X-ray equipment, which is connected to the control system 10 and is used to generate and control X-rays for radiological examination of human tissues. This type of equipment has necessary parts such as an X-ray generator, a patient bed and equipment support device, a filter plate, and may also include a signal analysis and display part, a cooling system, a body cavity treatment tube, and a treatment program.

[0049] For example, the interventional treatment device includes a suction device and a fluid supply device, and the suction device and the fluid supply device can be connected to the proximal end of the balloon catheter 7 respectively.

[0050] In summary, this embodiment provides an interventional treatment device, which includes the above-mentioned intravenous cardiac assist device and has the same beneficial effects as the intravenous cardiac assist device. Moreover, the interventional treatment device can be applied to coronary veins, coronary arteries, and other fields at the same time, has strong versatility, and is conducive to promotion and application.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A venous cardiac assist device, characterized in that: include: A balloon catheter, a first balloon, a second balloon and a third balloon; the distal end of the balloon catheter is sequentially sleeved on the first balloon, the second balloon and the third balloon, and the first balloon, the second balloon and the third balloon are respectively controlled by independent air circuits so that each balloon can be selectively inflated and deflated; Also included: a balloon pump group, which is disposed at the proximal end of the balloon catheter and is respectively connected to the first balloon, the second balloon and the third balloon through independent air paths; It also includes: a control system, which is connected to the balloon pump group, and the control system is used to send at least one group of action instructions to the balloon pump group, each group of the action instructions includes: a second balloon inflation instruction, a first balloon and a third balloon inflation instruction, a second balloon deflation instruction, and a first balloon and a third balloon deflation instruction in sequence according to the timing control, and the balloon pump group performs corresponding inflation and deflation actions according to the action instructions; when in use, first control the second balloon to be inflated so that it expands in the right atrium; then control the first balloon and the third balloon to be inflated so that they expand in the superior vena cava and the inferior vena cava respectively; thereafter, control the second balloon to be deflated so that negative pressure is formed in the right atrium; then control the first balloon and the third balloon to be deflated.

2. The intravenous cardiac assist device according to claim 1, characterized in that: Also includes: A pressure sensing device is connected to the control system, and is used to respectively detect the pressures of the first balloon, the second balloon, and the third balloon and feed back the pressures to the control system.

3. The intravenous cardiac assist device according to claim 1, characterized in that: Also includes: An electrocardiogram sensor device is connected to the control system and is used to detect a cardiac signal spectrum and feed it back to the control system.

4. The intravenous cardiac assist device according to claim 1, characterized in that: The maximum expansion volumes of the first balloon and the third balloon are both smaller than the maximum expansion volume of the second balloon.

5. The intravenous cardiac assist device according to claim 1, characterized in that: The balloon catheter has multiple lumen structures, which include at least a central lumen arranged through and three airway lumens arranged outside the central lumen, and the three airway lumens are respectively connected to the first balloon, the second balloon and the third balloon.

6. The intravenous cardiac assist device according to claim 1, characterized in that: The first balloon, the second balloon and the third balloon are all provided with a developing part.

7. An interventional treatment device, characterized in that: Comprising a venous cardiac assist device as described in any one of claims 1-6.

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