Heart auxiliary air bag device

Abstract

The utility model provides a heart auxiliary air bag device. The heart auxiliary air bag device comprises a first shell, a cavity structure arranged in the first shell, a driving assembly arranged on the first shell and used for forming acting force on the cavity structure, and an air bag communicated with the cavity structure. The cavity structure comprises a second shell with an opening and a deformable elastic diaphragm arranged at the opening end of the second shell, and a cavity communicated with the air bag is defined by the second shell and the deformable elastic diaphragm. The driving assembly is used for forming acting force on the deformable elastic diaphragm, the deformable elastic diaphragm deforms in the second shell to change the volume of the cavity, and the air bag expands or contracts along with the volume change of the cavity. Acting force is formed on the deformable elastic diaphragm through the driving assembly, so that inflation and deflation of the air bag are controlled, the working efficiency is improved, and the situation that inflation of the air bag is insufficient or deflation is not thorough is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a heart assist airbag device. Background Art

[0002] Intra-aortic balloon pump (IABP) is one of the mechanical circulatory assistance methods. It consists of a cylindrical balloon fixed to a catheter, which is placed in the thoracic aorta. The proximal end of the catheter is located at the end of the left subclavian artery, and the distal end is located at the renal artery. The balloon is inflated when the heart relaxes and deflated when the heart contracts. In most intra-aortic balloon pump systems, a diaphragm pump is used as the driving element to control the inflation and deflation of the balloon so that it is coordinated with the natural pulsation of the heart, thereby effectively improving blood circulation and heart function.

[0003] However, the power of the diaphragm pump used to control the inflation and deflation of the airbag in the prior art comes from an external medium (such as compressed air). If the pressure of the external medium source is too small, it cannot provide sufficient driving force, resulting in the stroke frequency and output of the diaphragm pump being affected, thereby reducing the working efficiency. Or because the diaphragm pump is in long-term continuous operation, the diaphragm material is prone to deformation, aging or even rupture, which leads to the reduction of the working efficiency of the diaphragm pump, resulting in insufficient inflation or incomplete deflation of the airbag, thereby affecting the regulation of aortic hemodynamics and posing a safety hazard.

[0004] Therefore, there is an urgent need for a heart assist airbag device that does not require external medium for driving to achieve control of inflation and deflation of the airbag, so as to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to disclose a cardiac assist airbag device for solving the many defects existing in the diaphragm pump for controlling the inflation and deflation of the airbag in the prior art, especially for realizing the force exerted on the deformable elastic diaphragm by the driving component, so as to control the inflation and deflation of the airbag, so as to improve the working efficiency and avoid the situation that the airbag is insufficiently inflated or incompletely deflated.

[0006] To achieve the above-mentioned object, the utility model provides a heart assist airbag device, comprising: a first shell, a cavity structure disposed in the first shell, a driving component disposed in the first shell to form a force on the cavity structure, and an airbag connected to the cavity structure;

[0007] The cavity structure comprises: a second shell with an open end, a deformable elastic diaphragm disposed at the open end of the second shell, the second shell and the deformable elastic diaphragm enclose a chamber communicating with the airbag;

[0008] The driving assembly is used to generate a force on the deformable elastic diaphragm. The deformable elastic diaphragm is deformed in the second shell to change the volume of the chamber. The airbag expands or contracts as the volume of the chamber changes.

[0009] As a further improvement of the present invention, the driving assembly includes: a driving unit, a movable rod configured to rotate on the driving shaft of the driving unit, a movable block sleeved on the outside of the movable rod, a guide portion formed on at least part of the side wall of the movable rod to guide the movable block to move laterally when the movable rod rotates relative to the movable block, and a supporting member configured on the movable block for supporting the deformable elastic diaphragm.

[0010] As a further improvement of the present invention, the driving assembly includes: a driving unit, a movable rod arranged on the driving shaft of the driving unit to move in the lateral direction, and a supporting member arranged on the movable rod for supporting the deformable elastic diaphragm.

[0011] As a further improvement of the utility model, the guide portion is configured as a threaded structure surrounding the side wall of the movable rod and forming a threaded fit with the movable block, and when the movable rod rotates relative to the movable block, the movable block is guided to move laterally through the threaded structure.

[0012] As a further improvement of the present invention, the movable block moves along the direction where the deformable elastic diaphragm is located, the abutting member abuts against the deformable elastic diaphragm to deform the deformable elastic diaphragm in the second shell to reduce the volume of the chamber, and the airbag expands as the volume of the chamber decreases;

[0013] The movable block moves in a direction opposite to the deformable elastic diaphragm to drive the abutment member to cancel the force acting on the deformable elastic diaphragm. The deformable elastic diaphragm recovers to an undeformed state through its own elasticity to increase the volume of the chamber. The airbag contracts as the volume of the chamber increases.

[0014] As a further improvement of the present invention, the abutting member moves along the direction where the deformable elastic diaphragm is located, and the abutting member abuts against the deformable elastic diaphragm to cause the deformable elastic diaphragm to deform in the second shell to reduce the volume of the chamber, and the airbag expands as the volume of the chamber decreases;

[0015] The abutment member moves in a direction opposite to the deformable elastic diaphragm, and the abutment member cancels the force acting on the deformable elastic diaphragm. The deformable elastic diaphragm recovers to an undeformed state through its own elasticity to increase the volume of the chamber, and the airbag contracts as the volume of the chamber increases.

[0016] As a further improvement of the present invention, the abutting member is connected to the deformable elastic diaphragm so as to stretch the deformable elastic diaphragm when the abutting member moves in the opposite direction to the position of the deformable elastic diaphragm.

[0017] As a further improvement of the present invention, the heart assist airbag device further includes: a catheter configured with the airbag and connected to the chamber, and the gas in the chamber is transmitted into the airbag through the catheter.

[0018] As a further improvement of the present invention, the cavity structure also includes: a sealing ring body arranged at the open end of the second shell, the deformable elastic diaphragm is clamped between the sealing ring body and the open end of the second shell, and a plurality of fixing bolts are continuously penetrated through the sealing ring body and the deformable elastic diaphragm in the transverse direction and at least partially extend into the second shell and are arranged circumferentially.

[0019] As a further improvement of the present invention, the supporting member includes: a mounting block, a convex module arranged on the side of the mounting block facing the deformable elastic diaphragm and centered with the deformable elastic diaphragm, and a connecting bolt that passes through the mounting block and at least partially extends into the convex module.

[0020] Compared with the prior art, the beneficial effect of the utility model is that a force is applied to the deformable elastic diaphragm by the driving component, and the deformable elastic diaphragm is subjected to the force and deforms in the second shell and changes the volume of the chamber, thereby realizing the control of the inflation and deflation of the airbag. It solves the problem that the diaphragm pump in the prior art uses an external medium as a power source to drive the inflation and deflation of the airbag, and the diaphragm material is easily deformed, aged or even ruptured during long-term continuous operation of the diaphragm pump, which leads to a decrease in the working efficiency of the diaphragm pump. It avoids the situation that the airbag is insufficiently inflated or incompletely deflated, thereby ensuring the regulation of aortic hemodynamics and reducing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is an overall diagram of the heart assist airbag device disclosed by the utility model;

[0022] Figure 2 for Figure 1 A cross-sectional view taken along the AA axis is a schematic diagram of a preferred drive assembly of the present invention, wherein the airbag is in a deflated state and the pneumatic controller is omitted;

[0023] Figure 3 This is a schematic diagram of a preferred drive assembly in the utility model, wherein the airbag is in an inflated state;

[0024] Figure 4 for Figure 3 Enlarged view of point C in the middle;

[0025] Figure 5 It is a schematic diagram of a driving assembly in another embodiment of the utility model, wherein the airbag is in a deflated state;

[0026] Figure 6 It is a schematic diagram of a driving assembly of another embodiment of the present invention, wherein the airbag is in an inflated state. DETAILED DESCRIPTION

[0027] The present invention is described in detail below in conjunction with the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in the field based on these embodiments are all within the scope of protection of the present invention.

[0028] It is particularly important to note that in the following embodiments, the term "lateral" refers to the lateral length of the heart assist balloon device, i.e. Figure 1 The X-axis is shown in the opposite direction.

[0029] Please refer to Figures 1 to 6 A specific embodiment of a heart assist balloon device is disclosed.

[0030] In this embodiment, the airbag 40 is placed in the descending part of the patient's aorta, and the catheter 50 equipped with the airbag 40 can be inserted and extended to the designated position through the femoral artery. The air pressure inside the airbag 40 is set to an intermediate value between the maximum and minimum aortic pressures, so as to achieve the best effect in the cardiac physiological cycle. During the cardiac systole, the airbag 40 is quickly deflated before the heart is about to eject blood, thereby reducing the afterload borne by the ventricular contraction and reducing the workload of the heart. At the beginning of the cardiac diastole, the airbag 40 is quickly inflated when the heart is relaxed to increase the pressure in the aorta, thereby increasing the blood flow velocity in the aorta, strengthening the blood perfusion of the coronary artery, and improving the oxygen supply to the myocardium. The heart assist airbag device 100 forms a force on the deformable elastic diaphragm 22 through the driving component 30, thereby controlling the inflation and deflation of the airbag 40, thereby avoiding the situation where the airbag 40 is insufficiently inflated or incompletely deflated, ensuring the regulation of the aortic hemodynamics, and reducing safety hazards.

[0031] Ginseng Figure 1 and Figure 2As shown, in this embodiment, the heart assist airbag device 100 includes: a first shell 10, a cavity structure 20 disposed in the first shell 10, a driving component 30 configured in the first shell 10 to form a force on the cavity structure 20, and an airbag 40 connected to the cavity structure 20; the cavity structure 20 includes: a second shell 21 with an open opening, a deformable elastic diaphragm 22 configured at the open end of the second shell 21, the second shell 21 and the deformable elastic diaphragm 22 enclose a chamber 23 connected to the airbag 40; the driving component 30 is used to form a force on the deformable elastic diaphragm 22, the deformable elastic diaphragm 22 is deformed in the second shell 21 to change the volume of the chamber 23, and the airbag 40 expands or contracts as the volume of the chamber 23 changes. The driving assembly 30 generates a force on the deformable elastic diaphragm 22 , and the deformable elastic diaphragm 22 is deformed in the second housing 21 by the force and changes the volume of the chamber 23 , so that the volume of the chamber 23 increases or decreases.

[0032] Specifically, refer to Figure 3 As shown, in the process where the deformable elastic diaphragm 22 is deformed by the force in the second shell 21 to reduce the volume of the chamber 23, the gas in the chamber 23 will be injected into the airbag 40 along the direction indicated by the arrow B1. As the volume of the chamber 23 gradually decreases, the gas in the chamber 23 is gradually injected into the airbag 40 to inflate the airbag 40; as shown in FIG. Figure 2 As shown, in the process that the deformable elastic diaphragm 22 is deformed in the second shell 21 to increase the volume of the chamber 23, the gas inside the airbag 40 will be injected into the chamber 23 along the direction indicated by the arrow B2. As the volume of the chamber 23 gradually increases, the gas inside the airbag 40 is gradually injected into the chamber 23, so that the airbag 40 is deflated and contracted. The heart assist airbag device 100 forms a force on the deformable elastic diaphragm 22 through the driving component 30. The deformable elastic diaphragm 22 is subjected to the force and deforms in the second shell 21 and changes the volume of the chamber 23, thereby controlling the inflation and deflation of the airbag 40. The problem that the diaphragm pump in the prior art uses an external medium as a power source to drive the inflation and deflation of the airbag and that the diaphragm material is easily deformed, aged or even ruptured during long-term continuous operation of the diaphragm pump, resulting in a reduction in the working efficiency of the diaphragm pump, is avoided. The airbag 40 is not sufficiently inflated or deflated completely, thereby ensuring the regulation of aortic hemodynamics and reducing safety hazards.

[0033] It should be noted that the deformable elastic diaphragm 22 is configured as an elastic structure that can change its shape as the external force changes and can restore its original shape after the external force is removed. Preferably, the deformable elastic diaphragm 22 can produce elastic deformation under the action of the external force, and when the external force is removed, the deformable elastic diaphragm 22 can automatically restore to its original shape due to its excellent elastic properties.

[0034] In this embodiment, preferably, Figure 2 and Figure 3 As shown, the driving assembly 30 includes: a driving unit 31, a movable rod 32 configured to rotate with a driving shaft 311 of the driving unit 31, a movable block 33 sleeved on the outer side of the movable rod 32, a guide portion (not shown) formed on at least part of the side wall of the movable rod 32 to guide the movable block 33 to move laterally when the movable rod 32 rotates relative to the movable block 33, and a supporting member 34 configured on the movable block 33 for supporting the deformable elastic diaphragm 22. The movable rod 32 is connected to the driving shaft 311 through a coupling 312. The driving unit 31 is configured as a driving motor. The driving unit 31 drives the active shaft 311 to rotate to drive the movable rod 32 to rotate synchronously, so that the movable rod 32 guides the movable block 33 to move laterally through the guide part (not shown) during the rotation relative to the movable block 33, so that the movable block 33 drives the supporting member 34 to move synchronously, so that the deformable elastic diaphragm 22 is supported by the supporting member 34 to form a force on the deformable elastic diaphragm 22, thereby realizing the deformation of the deformable elastic diaphragm 22 in the second shell 21 to reduce the volume of the chamber 23. After the supporting member 34 cancels the force on the deformable elastic diaphragm 22, the deformable elastic diaphragm 22 automatically returns to its original shape in the second shell 21 through its own elastic properties to increase the volume of the chamber 23.

[0035] Specifically, the guide portion (not shown) is configured as a threaded structure (not shown) that surrounds the side wall of the movable rod 32 and forms a threaded fit with the movable block 33. When the movable rod 32 rotates relative to the movable block 33, the threaded structure guides the movable block 33 to move in the lateral direction. The guide portion (not shown) guides the movable block 33 to move in the lateral direction by using a threaded structure (not shown), which can improve the movement accuracy of the movable block 33, avoid shaking or loosening during operation, and ensure the stability of the force formed by the abutment member 34 on the deformable elastic diaphragm 22, further reducing the occurrence of insufficient inflation or incomplete deflation of the airbag 40.

[0036] Further, Figure 3 As shown, the driving unit 31 drives the movable rod 32 to rotate and guides the movable block 33 to move in the direction of the deformable elastic diaphragm 22 through the threaded structure, and the abutting member 34 abuts the deformable elastic diaphragm 22 to deform the deformable elastic diaphragm 22 in the second shell 21 to reduce the volume of the chamber 23, and the airbag 40 expands as the volume of the chamber 23 decreases; the driving unit 31 drives the active shaft 311 to rotate to drive the movable rod 32 to rotate synchronously, and the movable rod 32 guides the movable block 33 in the direction of the deformable elastic diaphragm 22 (that is, Figure 3The movable block 33 drives the abutting member 34 to move synchronously, so that the abutting member 34 abuts against the deformable elastic diaphragm 22 to form a force on the deformable elastic diaphragm 22, and the deformable elastic diaphragm 22 is deformed in the second shell 21 to reduce the volume of the chamber 23, so that the gas in the chamber 23 is moved along the second shell 21. Figure 3 The airbag 40 is injected in the direction indicated by the middle arrow B1 to inflate the airbag 40 .

[0037] Ginseng Figure 2 As shown, the driving unit 31 drives the movable rod 32 to rotate and guides the movable block 33 to move in the opposite direction to the deformable elastic diaphragm 22 through the threaded structure, so as to drive the abutting member 34 to cancel the force acting on the deformable elastic diaphragm 22, and the deformable elastic diaphragm 22 recovers to the undeformed state (such as Figure 2 As shown in FIG. 2 ), the volume of the chamber 23 is increased, and the airbag 40 contracts as the volume of the chamber 23 increases. The driving unit 31 drives the active shaft 311 to rotate to drive the movable rod 32 to rotate synchronously. During the rotation of the movable rod 32 relative to the movable block 33, the movable block 33 is guided by the thread structure in the opposite direction to the direction of the deformable elastic diaphragm 22 (i.e., Figure 2 The movable block 33 drives the abutting member 34 to move synchronously, thereby canceling the abutting force of the abutting member 34 on the deformable elastic diaphragm 22, and the deformable elastic diaphragm 22 is restored to the position in the second housing 21 by its own elastic properties. Figure 2 2 to increase the volume of the chamber 23 and restore the original volume of the chamber 23. In this process, the deformable elastic diaphragm 22 extracts the gas inside the airbag 40 to move the gas inside the airbag 40 along the Figure 2 The airbag 40 is drawn into the chamber 23 in the direction indicated by the middle arrow B2, thereby causing the airbag 40 to be deflated and contracted.

[0038] The driving assembly 30 includes: a driving unit 31', a movable rod 32' configured on a driving shaft 311' of the driving unit 31' to move in the lateral direction, and a resisting member 34 configured on the movable rod 32' to resist the deformable elastic diaphragm 22. The driving unit 31' is configured as an electric telescopic rod, and the driving unit 31' drives the driving shaft 311' to move in the lateral direction to drive the movable rod 32' to move synchronously, and the resisting member 34 is driven to move synchronously through the movable rod 32', so that the resisting member 34 resists the deformable elastic diaphragm 22 to form a force on the deformable elastic diaphragm 22, thereby realizing that the deformable elastic diaphragm 22 is deformed in the second shell 21 to change the volume of the chamber 23.

[0039] Specifically, refer to Figure 6As shown, the driving unit 31' drives the movable rod 32' to drive the abutting member 34 to move in the direction of the deformable elastic diaphragm 22, and the abutting member 34 abuts the deformable elastic diaphragm 22 to reduce the volume of the chamber 23, and the airbag 40 expands as the volume of the chamber 23 decreases; the driving unit 31' drives the active shaft 311' to drive the movable rod 32' in the direction of the deformable elastic diaphragm 22 (that is, Figure 6 The movable rod 32' drives the abutting member 34 to move synchronously, and the abutting member 34 abuts against the deformable elastic diaphragm 22 to form a force on the deformable elastic diaphragm 22, and the deformable elastic diaphragm 22 is deformed in the second shell 21 to reduce the volume of the chamber 23, so that the gas in the chamber 23 Figure 6 The airbag 40 is entered in the direction indicated by the middle arrow B1 to inflate the airbag 40 .

[0040] Ginseng Figure 5 As shown, the driving unit 31' drives the movable rod 32' to drive the abutment member 34 to move in the direction opposite to the deformable elastic diaphragm 22, and the abutment member 34 cancels the force acting on the deformable elastic diaphragm 22, and the deformable elastic diaphragm 22 recovers to the undeformed state (such as Figure 5 As shown in FIG. 2 , the volume of the chamber 23 is increased, and the airbag 40 contracts as the volume of the chamber 23 increases. The driving unit 31 ′ drives the active shaft 311 ′ to drive the movable rod 32 ′ in the opposite direction of the deformable elastic diaphragm 22 (ie, Figure 5 The movable rod 32' drives the abutting member 34 to move synchronously to cancel the abutting force of the abutting member 34 on the deformable elastic diaphragm 22, and the deformable elastic diaphragm 22 recovers to the state in the second housing 21 through its own elastic properties. Figure 5 The undeformed state shown in the figure is shown in the figure, and the volume of the chamber 23 is increased to restore the original volume of the chamber 23. In this process, the deformable elastic diaphragm 22 extracts the gas inside the airbag 40 to transfer the gas inside the airbag 40 to the inner chamber 23. Figure 5 The airbag 40 is drawn into the chamber 23 in the direction indicated by the middle arrow B2, thereby causing the airbag 40 to be deflated and contracted.

[0041] In this embodiment, preferably, Figures 2 to 6 As shown, the support member 34 is connected to the deformable elastic membrane 22, so that when the support member 34 moves in the direction opposite to the deformable elastic membrane 22, the deformable elastic membrane 22 is stretched to help the deformable elastic membrane 22 return to an undeformed state, thereby increasing the volume of the chamber 23. The support member 34 and the deformable elastic membrane 22 can be fixedly connected by bonding or other methods. Figure 2 or Figure 5During the movement in the direction indicated by the middle arrow X1, a force can be applied to the deformable elastic diaphragm 22 to stretch the deformable elastic diaphragm 22, thereby assisting the deformable elastic diaphragm 22 in recovering to the undeformed state. Since the deformable elastic diaphragm 22 needs to be deformed repeatedly during operation, mechanical fatigue will occur. The heart assist airbag device 100 can assist the deformable elastic diaphragm 22 in recovering to an undeformed state through the driving component 30, thereby accelerating the recovery process of the deformable elastic diaphragm 22, allowing the deformable elastic diaphragm 22 to recover to an undeformed state faster, shortening the recovery time of the deformable elastic diaphragm 22, and improving the efficiency of controlling the deflation of the airbag 40 and the response speed of the contraction of the airbag 40; it can also improve the accuracy of the recovery of the deformable elastic diaphragm 22, which is beneficial for the deformable elastic diaphragm 22 to recover to an undeformed state more accurately, reduce the residual deformation of the deformable elastic diaphragm 22, and reduce the stress concentration of the deformable elastic diaphragm 22, thereby extending the fatigue life of the deformable elastic diaphragm 22.

[0042] Specifically, refer to Figures 1 to 3 As shown, the heart assist airbag device 100 further includes: a catheter 50 configured with the airbag 40 and connected to the chamber 23, and the gas in the chamber 23 is transmitted in the airbag 40 through the catheter 50. The first shell 10 and the second shell 21 are configured with a through hole 102 for connecting the chamber 23 with the catheter 50. When the abutting member 34 abuts against the deformable elastic diaphragm 22 to form a force on the deformable elastic diaphragm 22, and the deformable elastic diaphragm 22 is deformed in the second shell 21 to reduce the volume of the chamber 23, the gas in the chamber 23 passes through the through hole 102 and flows along the inside of the catheter 50. Figure 3 The airbag 40 is injected in the direction indicated by the middle arrow B1 to inflate the airbag 40; when the abutting force of the abutting member 34 on the deformable elastic diaphragm 22 is cancelled, the deformable elastic diaphragm 22 recovers to an undeformed state in the second shell 21 by its own elastic properties, and in the process of increasing the volume of the chamber 23 to restore the original volume of the chamber 23, the deformable elastic diaphragm 22 extracts the gas inside the airbag 40 to transfer the gas inside the airbag 40 to the inner part of the conduit 50 along the inner part of the conduit 50. Figure 2 The air is drawn into the chamber 23 through the through hole 102 in the direction indicated by the arrow B2, thereby deflating and shrinking the airbag 40. The first housing 10 is provided with a plurality of connecting bolts 11 penetrating through the side wall of the first housing 10 and extending into the second housing 21, so as to fasten the second housing 21 to the first housing 10.

[0043] Specifically, refer to Figure 3 and Figure 4As shown, the cavity structure 20 further includes: a sealing ring body 24 disposed at the open end of the second shell 21, the deformable elastic diaphragm 22 is clamped between the sealing ring body 24 and the open end of the second shell 21, and a plurality of fixing bolts 25 that continuously penetrate the sealing ring body 24 and the deformable elastic diaphragm 22 in the transverse direction and at least partially extend into the second shell 21 and are arranged in the circumferential direction. The sealing ring body 24 is pressed against the connection between the deformable elastic diaphragm 22 and the open end of the second shell 21, and the sealing ring body 24 and the deformable elastic diaphragm 22 are fixed to the open end of the second shell 21 by the fixing bolts 25, so as to ensure the sealing of the connection between the deformable elastic diaphragm 22 and the open end of the second shell 21, and prevent the gas in the chamber 23 from leaking.

[0044] Specifically, refer to Figure 1 and Figure 2 As shown, the supporting member 34 includes: a mounting block 341, a convex module 342 disposed on the side of the mounting block 341 facing the deformable elastic diaphragm 22 and centered with the deformable elastic diaphragm 22, and a connecting bolt 343 that penetrates the mounting block 341 and at least partially extends into the convex module 342. The mounting block 341 is vertically disposed on the movable rod 32, and the convex module 342 is coaxially disposed with the mounting block 341 and the movable rod 32. This ensures that the force of the convex module 342 can be evenly applied to the deformable elastic diaphragm 22, avoids excessive local stress, fatigue damage or rupture of the deformable elastic diaphragm 22 due to eccentric force, and improves the stability and service life of the deformable elastic diaphragm 22. It should be noted that the convex module 342 is along the Figure 1 The longitudinal cross-sectional shape indicated by the middle arrow AA is a smooth curved surface shape, and the smooth curved surface shape includes but is not limited to the following: Figure 2 The arc shape shown in the figure may also be a hemispherical shape, a streamlined shape or a teardrop shape, etc., as long as it can ensure that the pressure is evenly distributed when the deformable elastic diaphragm 22 is abutted, and avoid local stress concentration that causes damage to the deformable elastic diaphragm 22.

[0045] Further, in some embodiments, Figure 1 As shown, the heart assist airbag device 100 further includes: a pneumatic controller 60 disposed in the catheter 50, the pneumatic controller 60 including a solenoid valve for controlling the switch of the air circuit in the catheter 50, and a pressure sensor for monitoring the pressure of the air circuit in the catheter 50. The pneumatic controller 60 is disposed between the airbag 40 and the first housing 10 to control the switch of the air circuit in the catheter 50 through the solenoid valve (not shown), and to monitor the pressure of the air circuit in the catheter 50 through the pressure sensor (not shown).

[0046] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the utility model. They are not intended to limit the protection scope of the utility model. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the utility model should be included in the protection scope of the utility model.

[0047] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0048] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A heart assist airbag device, characterized in that: include: A first shell, a cavity structure disposed in the first shell, a driving component disposed in the first shell to exert force on the cavity structure, and an airbag connected to the cavity structure; The cavity structure comprises: a second shell with an open end, a deformable elastic diaphragm disposed at the open end of the second shell, the second shell and the deformable elastic diaphragm enclose a chamber communicating with the airbag; The driving assembly is used to generate a force on the deformable elastic diaphragm. The deformable elastic diaphragm is deformed in the second shell to change the volume of the chamber. The airbag expands or contracts as the volume of the chamber changes.

2. The heart assist balloon device according to claim 1, characterized in that: The driving assembly includes: a driving unit, a movable rod configured to rotate on the driving shaft of the driving unit, a movable block sleeved on the outside of the movable rod, a guide portion formed on at least a portion of the side wall of the movable rod to guide the movable block to move laterally when the movable rod rotates relative to the movable block, and a supporting member configured on the movable block to support the deformable elastic diaphragm.

3. The heart assist balloon device according to claim 1, characterized in that: The driving assembly includes: a driving unit, a movable rod disposed on the driving shaft of the driving unit and moving in the lateral direction, and a supporting member disposed on the movable rod and used for supporting the deformable elastic diaphragm.

4. The heart assist balloon device according to claim 2, characterized in that: The guide portion is configured as a thread structure that surrounds the side wall of the movable rod and forms a threaded fit with the movable block. When the movable rod rotates relative to the movable block, the thread structure guides the movable block to move in a lateral direction.

5. The heart assist balloon device according to claim 4, characterized in that: The movable block moves along the direction where the deformable elastic diaphragm is located, the abutting member abuts against the deformable elastic diaphragm to make the deformable elastic diaphragm deform in the second shell to reduce the volume of the chamber, and the airbag expands as the volume of the chamber decreases; The movable block moves in a direction opposite to the deformable elastic diaphragm to drive the abutment member to cancel the force acting on the deformable elastic diaphragm. The deformable elastic diaphragm recovers to an undeformed state through its own elasticity to increase the volume of the chamber. The airbag contracts as the volume of the chamber increases.

6. The heart assist balloon device according to claim 3, characterized in that: The abutting member moves along the direction where the deformable elastic diaphragm is located, and the abutting member abuts against the deformable elastic diaphragm to make the deformable elastic diaphragm deform in the second shell to reduce the volume of the chamber, and the airbag expands as the volume of the chamber decreases; The abutment member moves in a direction opposite to the deformable elastic diaphragm, and the abutment member cancels the force acting on the deformable elastic diaphragm. The deformable elastic diaphragm recovers to an undeformed state through its own elasticity to increase the volume of the chamber, and the airbag contracts as the volume of the chamber increases.

7. The heart assist balloon device according to claim 5 or 6, characterized in that: The abutment is connected to the deformable elastic diaphragm so as to stretch the deformable elastic diaphragm when the abutment moves in a direction opposite to the deformable elastic diaphragm.

8. The heart assist balloon device according to claim 1, characterized in that: The heart assist airbag device further includes: a catheter configured with the airbag and connected to the chamber, and the gas in the chamber is transmitted into the airbag through the catheter.

9. The heart assist balloon device according to claim 8, characterized in that: The cavity structure also includes: a sealing ring body arranged at the open end of the second shell, the deformable elastic diaphragm is clamped between the sealing ring body and the open end of the second shell, and a plurality of fixing bolts are continuously penetrated through the sealing ring body and the deformable elastic diaphragm in the transverse direction and at least partially extend into the second shell and are arranged along the circumferential direction.

10. The heart assist balloon device according to claim 2 or 3, characterized in that: The abutting member includes: a mounting block, a convex module arranged on a side of the mounting block facing the deformable elastic diaphragm and centrally arranged with the deformable elastic diaphragm, and a connecting bolt penetrating the mounting block and at least partially extending into the convex module.

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