Heart valve water injection test device

Abstract

The utility model discloses a heart valve water injection test device, and relates to the technical field of structural design of medical instruments and physical therapy instruments. The heart valve water injection test device comprises a water injector, a first one-way valve and a second one-way valve, a water outlet of the water injector is fixedly connected with the first one-way valve, a water inlet of the water injector is fixedly connected with the second one-way valve, and the second one-way valve is communicated with a saline bag. The problems that an existing heart valve water injection test device needs two persons to operate and cooperate alternately, use is inconvenient, and operation is time-consuming are solved. And secondly, negative pressure generated when the water injection ball is not rebounded in time after water injection forms reverse suction, rapid filling of the ventricle is not facilitated, and the risk of damage caused by tissue adsorption also exists. According to the water injection test device for the heart valve, the multiple one-way valves are fixedly connected into the water injector, the water injector can be continuously used by only one person, alternate cooperation of two persons is not needed, the first one-way valve is closed when the internal pressure of the water injector is negative, and the problem that the tissue is adsorbed due to suck-back cannot be caused.

Description

Technical Field

[0001] This utility model relates to the field of structural design technology of medical devices and physical therapy equipment, and in particular to a heart valve water injection test device. Background Technology

[0002] Heart valve diseases, such as mitral regurgitation and tricuspid regurgitation, can easily cause symptoms such as fatigue, palpitations, chest pain, exertional dyspnea, acute left heart failure, and even cardiogenic shock and acute pulmonary edema. Heart valve repair is a common surgical technique for treating heart valve diseases. However, after the procedure, the effectiveness of the repair usually needs to be assessed. During valve repair, the heart, including the valves, is in a quiescent state, requiring multiple "water injection tests." This involves manually injecting water into the heart while it is at rest to simulate the valve's closed state. This test is used before surgery to explore valvular lesions and assist in designing the repair plan, and after surgery to verify the satisfaction of the surgical outcome.

[0003] The current traditional heart valve infusion test device includes a catheter and an infusion balloon. The end of the catheter is connected to the balloon, and the end is inserted into the ventricle through the valve orifice. Squeezing the balloon forces sterile saline into the ventricle through the catheter, and after the ventricle is filled, the heart valve is observed to close / leak. This procedure needs to be repeated multiple times during the operation.

[0004] Secondly, the operation requires two people to alternately use two water-filled balloons. One person holds the balloon to fill it with water, while the other adds water to it, which is inconvenient and inefficient. Furthermore, the repeated water intake and output can affect the continuity of the experiment. Additionally, if the balloons do not rebound promptly after filling to create negative pressure, some of the ventricular fluid may be drawn back into the balloons, hindering rapid ventricular filling. There is also a risk of tissue damage due to the negative pressure adsorbing subvalvular tissue structures from the tip of the balloons.

[0005] It is evident that existing heart valve water injection testing devices cannot achieve continuous water injection from the injection bulb, and require two people to operate in shifts, which is inconvenient. In addition, the negative pressure generated by the failure of the water to rebound in time after injection creates backflow, which is not conducive to the rapid filling of the ventricle, and there is also a risk that the injection bulb may adsorb tissue and cause damage. Utility Model Content

[0006] In view of this, the main purpose of this utility model is to provide a heart valve water injection test device, which can solve the problems in the prior art that require two people to work together to absorb water multiple times, inject water, and cause negative pressure backflow at the tip of the water injection ball due to failure to rebound in time.

[0007] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0008] In a preferred embodiment, the device includes: a water injector, a first check valve, and a second check valve. The outlet of the water injector is fixedly connected to the first check valve, and the inlet of the water injector is fixedly connected to the second check valve. The second check valve is connected to a saline bag.

[0009] In a preferred embodiment, the water injector includes: a cylinder, a water outlet, and a water injection ball;

[0010] In a preferred embodiment, the cylinder includes an upper connecting part and a lower connecting part, wherein the lower connecting part is fixedly connected to the water outlet part;

[0011] In a preferred embodiment, a water outlet is provided at the lower end of the water outlet section, and the water outlet is fixedly connected to the first one-way valve;

[0012] In a preferred embodiment, the water-injection ball includes an extension and a hole, the extension being fixedly connected to the upper outer wall of the upper connecting part, the hole being provided on the side of the water-injection ball, and the second one-way valve being fixedly connected inside the hole.

[0013] In a preferred embodiment, the extension wraps circumferentially around the upper outer wall of the cylinder.

[0014] In a preferred embodiment, the first check valve includes: a ball valve core, a spring spring, and a first valve body;

[0015] In a preferred embodiment, the first valve body is divided into: a first inlet portion, a first valve body middle section, a first threaded portion, a first outlet portion, and a support portion;

[0016] In a preferred embodiment, the first inlet portion, the middle section of the first valve body, the first threaded portion, and the first outlet portion are integrally formed.

[0017] In a preferred embodiment, the inner wall of the first inlet portion is provided with a spiral groove, and the lower end of the inner wall of the first outlet portion is fixedly connected to the support portion.

[0018] In a preferred embodiment, the first threaded portion is threadedly connected to the water outlet portion, the diameter of the first threaded portion is larger than the diameter of the middle section of the first valve body, and the connection between the first threaded portion and the middle section of the first valve body is stepped.

[0019] In a preferred embodiment, the spherical valve core is provided inside the middle section of the first valve body. The diameter of the spherical valve core is larger than the diameter of the first inlet, and the diameter of the first outlet is larger than the spherical valve core. The upper side of the spherical valve core abuts against the inner wall of the first inlet, and the lower side of the spherical valve core is supported and connected to the rebound spring. The lower end of the rebound spring is supported on the support.

[0020] In a preferred embodiment, the second check valve includes: a film valve core, a retaining ring, a gasket, and a second valve body;

[0021] In a preferred embodiment, the second valve body is divided into: a second inlet, a middle section of the second valve body, a second outlet, and a bracket;

[0022] In a preferred embodiment, the second inlet, the middle section of the second valve body, and the second outlet are integrally formed;

[0023] In a preferred embodiment, the inner wall of the second inlet is provided with a spiral groove, and the inner wall of the second inlet is provided with the bracket.

[0024] In a preferred embodiment, the outer wall of the second outlet is fixedly connected to the fixing ring, and a plurality of gaskets are fixedly connected between the fixing ring and the middle section of the second valve body.

[0025] In a preferred embodiment, the diameter of the middle section of the second valve body is larger than the diameter of the second inlet, the connection between the middle section of the second valve body and the second inlet is stepped, the film valve core is fixedly connected to the bracket, and the edge of the film valve core is attached to the step on the inner wall of the middle section of the second valve body.

[0026] In a preferred embodiment, a water inlet pipe is connected between the second inlet and the saline bag, and the water inlet pipe is equipped with a flow stop clamp.

[0027] In a preferred embodiment, the first outlet extends out of the water outlet and is connected to a water outlet pipe.

[0028] In a preferred embodiment, the device further includes cable ties, wherein a fixing protrusion is provided on the outside of the cylinder, and a plurality of cable ties are fixedly connected to the extension and the wrapping area of ​​the cylinder.

[0029] In a preferred embodiment, the surface of the cylinder is provided with scale markings.

[0030] In a preferred embodiment, the outer wall of the cylinder is provided with anti-slip texture, which is arranged around the cylinder.

[0031] The heart valve water injection test device of this utility model has the following beneficial effects:

[0032] The heart valve infusion test device includes: an injector, a first one-way valve and a second one-way valve. The outlet of the injector is fixedly connected to the first one-way valve, and the inlet of the injector is fixedly connected to the second one-way valve. The second one-way valve is connected to a saline bag.

[0033] This invention solves the problems of existing heart valve injection testing devices, which require two people to operate in shifts, making them inconvenient and time-consuming. Secondly, the negative pressure created by the inability of the injection bulb to rebound promptly after injection can cause backflow, hindering rapid ventricular filling and posing a risk of tissue adsorption and damage.

[0034] This heart valve infusion testing device uses multiple one-way valves fixedly connected inside the infusion unit. When there is positive pressure inside the infusion unit, the first one-way valve opens, allowing water to flow out of the infusion unit. When there is negative pressure inside the infusion unit, the second one-way valve opens, allowing water to flow in from the outside of the infusion unit. This allows the infusion unit to be used continuously by only one person, eliminating the need for two people to work alternately. Furthermore, the first one-way valve closes when there is negative pressure inside the infusion unit, preventing backflow and the potential for tissue adhesion. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of a heart valve water injection test device according to one embodiment of the present disclosure;

[0037] Figure 2 This is a schematic diagram of the structure of the injector of a heart valve water injection test device according to one embodiment of the present disclosure;

[0038] Figure 3 This is a cross-sectional view of a heart valve infusion test apparatus according to one embodiment of the present disclosure;

[0039] Figure 4 This is a schematic diagram of the structure of the first one-way valve of a heart valve water injection test device according to one embodiment of the present disclosure;

[0040] Figure 5 This is a cross-sectional view of the first one-way valve of a heart valve infusion test apparatus according to one embodiment of the present disclosure;

[0041] Figure 6 This is a schematic diagram of the structure of the second one-way valve of a heart valve water injection test device according to one embodiment of the present disclosure;

[0042] Figure 7 This is a schematic diagram of the second one-way valve of a heart valve water injection test device according to one embodiment of the present disclosure from another angle.

[0043] Figure 8 This is a schematic diagram of the structure of a film valve core of a heart valve infusion test device according to one embodiment of the present disclosure;

[0044] Figure 9 This is a cross-sectional view of the second one-way valve of a heart valve infusion test device according to one embodiment of the present disclosure;

[0045] Figure 10 This is a schematic diagram of the water outlet section of a heart valve water injection test device according to one embodiment of the present disclosure;

[0046] Figure 11 This is a cross-sectional view of the water outlet of a heart valve water injection test device according to one embodiment of the present disclosure;

[0047] Figure 12 This is a schematic diagram of the assembly of the second one-way valve and the water injection ball in a heart valve water injection test device according to one embodiment of the present disclosure.

[0048] [Explanation of Key Component Symbols]

[0049] 1. Water injector;

[0050] 11. Cylinder body;

[0051] 111. Upper connecting part; 112. Lower connecting part;

[0052] 12. Water outlet section;

[0053] 121. Water outlet;

[0054] 13. Fill the water ball;

[0055] 131. Extension; 132. Hole;

[0056] 01. First check valve;

[0057] 011. Ball valve core; 012. Rebound spring;

[0058] 013. First valve body;

[0059] 0131, First inlet section; 0132, First valve body middle section; 0133, First outlet section; 0134, Support section; 0135, First threaded section;

[0060] 02. Second check valve;

[0061] 021. Film valve core; 022. Retaining ring; 023. Gasket;

[0062] 024. Second valve body;

[0063] 0241, Second inlet section; 0242, Middle section of second valve body; 0243, Second outlet section; 0244, Support;

[0064] 2. Saline bags;

[0065] 3. Water inlet pipe;

[0066] 4. Flow stop clamp;

[0067] 5. Water outlet pipe;

[0068] 6. Cable ties;

[0069] 7. Scale markings;

[0070] 8. Anti-slip texture. Detailed Implementation

[0071] The following detailed description of a heart valve water injection test device of the present invention, in conjunction with the accompanying drawings and embodiments thereof, provides further information.

[0072] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0073] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0074] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0075] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0076] according to Figures 1-12 As shown, the heart valve infusion test device includes: an injector 1, a first one-way valve 01, and a second one-way valve 02. The outlet of the injector 1 is fixedly connected to the first one-way valve 01, and the inlet of the injector 1 is fixedly connected to the second one-way valve 02. The second one-way valve 02 is connected to a saline bag 2. The first one-way valve 01 is fixedly connected to the outlet of the injector 1. Based on the positive and negative pressure inside the injector 1, the first one-way valve 01 opens when there is positive pressure and closes when there is negative pressure. The second one-way valve 02 is fixedly connected to the inlet of the injector 1. The second one-way valve 02 opens when there is negative pressure and closes when there is positive pressure, thus ensuring that the water volume inside the injector 1 can be replenished in a timely manner after each infusion into the ventricular valve. This allows for continuous operation by a single person, improving efficiency and ensuring the continuity of the test.

[0077] To create both positive and negative pressure inside the water injector 1, the water injector 1 includes: a cylinder 11, a water outlet 12, and a water injection ball 13. The cylinder 11 includes an upper connecting part 111 and a lower connecting part 112. The lower connecting part 112 is fixedly connected to the water outlet 12. The inner wall of the lower connecting part 111 has internal threads, which are threaded to the water outlet 12, ensuring that the first one-way valve 01 can be installed into the water outlet 12 during installation. The water outlet 12 includes a water outlet 121, which is fixedly connected to the first one-way valve 01. The water outlet 121 and the first one-way valve 01 are also threaded to ensure a tight seal. An extension 131 is fixedly connected to the upper outer wall of the upper connecting part 111. The side of the water injection ball 13 has a hole 132, and the second one-way valve 02 is fixedly connected inside the hole 132. The extension 131 wraps around the upper connecting part 111 around the cylinder 11. The water injection ball 13 is connected to the upper end of the cylinder 11, and the cylinder 11 stores sterile saline solution inside. A hole 132 is provided on the side of the water injection ball 13, and a second one-way valve 02 is fixedly connected to the hole 132. The water injection ball 13 is made of elastic material. When the water injection ball 13 is manually squeezed, its internal volume decreases, the internal liquid is compressed, and the internal air pressure increases, forming a positive pressure. At this time, the positive pressure pushes the first one-way valve 01 to open, allowing the sterile saline solution to be discharged through the outlet pipe 5. After the water injection ball 13 is released, the restoring force of the elastic material causes it to return to its original shape, the internal volume increases, and the air pressure decreases, forming a negative pressure. The negative pressure draws liquid through the inlet pipe 3 connected to the saline bag 2, and at the same time, the second one-way valve 02 opens under the action of the negative pressure, allowing liquid to flow into the water injection ball 13.

[0078] To enable the first check valve 01 and the second check valve 02 to open when there is positive pressure inside the water injector 1 and close when there is negative pressure, or open when there is negative pressure and close when there is positive pressure, the first check valve 01 includes: a ball valve core 011, a rebound spring 012 and a first valve body 013; the first check valve 01 achieves rapid opening and closing through the combination of the ball valve core 011 and the rebound spring 012, ensuring that the water injection ball 13 rebounds in time after water injection, and there is no backflow problem. The ball valve core 011 forms a tight seal through the combined action of spring preload and fluid pressure, effectively preventing backflow. The first valve body 013 is divided into: a first inlet 0131, a first valve body middle section 0132, a first threaded section 0135, a first outlet 0133, and a support section 0134; the first inlet 0131, the first valve body middle section 0132, the first threaded section 0135, and the first outlet 0133 are integrally formed; the inner wall of the first inlet 0131 is provided with a spiral groove, which can guide the fluid to generate a centrifugal force to assist in pushing open the ball valve core 011 and accelerate the water injection speed. The lower end of the inner wall of the first outlet 0133 is fixedly connected to the support 0134. A spherical valve core 011 is provided inside the middle section 0132 of the first valve body. The diameter of the spherical valve core 011 is larger than the diameter of the first inlet 0131, and the diameter of the first outlet 0133 is larger than the spherical valve core 011. The upper side of the spherical valve core 011 abuts against the inner wall of the first inlet 0131. To ensure that the spherical valve core 011 remains in close contact with the inner wall when there is no fluid pressure, thus keeping the first check valve 01 closed, a rebound spring 012 is supported and connected to the lower side of the spherical valve core 011. The lower end of the rebound spring 012 is supported on the support 0134. The spherical valve core 011 typically has a larger flow area for the same size, which can improve testing efficiency and water injection speed. The first one-way valve 01 has a thread on the outer side 0132 of the middle section of the first valve body, which is threaded to the outlet 121. The first inlet 0131 is the fluid inlet, located on the side away from the outlet 121, and the first outlet 0133 is the fluid outlet, located on the side close to the outlet 121. The first threaded portion 0135 is threaded into the water outlet portion 12. The diameter of the first threaded portion 0135 is larger than the diameter of the middle section 0132 of the first valve body. The connection between the first threaded portion 0135 and the middle section 0132 of the first valve body is stepped. This allows the stepped end face to engage with the groove inside the water outlet 121 when the first threaded portion 0135 is connected to the inside of the water outlet 121, thus providing a connection limit. The middle section 0132 of the first valve body is provided with a spherical valve core 011. The diameter of the spherical valve core 011 is larger than the diameter of the first inlet portion 0131. The diameter of the first outlet portion 0133 is larger than the diameter of the spherical valve core 011, allowing the spherical valve core 011 to be assembled into the inside of the first valve body 013. At the same time, it also allows the support portion 0134 to be installed and fixed inside the first outlet portion 0133.

[0079] To ensure that sterile saline solution can enter the injection ball 13 from the inlet pipe 3 through the second one-way valve 02 when the water injector 1 is under negative pressure, the second one-way valve 02 includes: a film valve core 021, a retaining ring 022, a gasket 023, and a second valve body 024. The second valve body 024 is divided into: a second inlet 0241, a middle section 0242, a second outlet 0243, and a bracket 0244. The second inlet 0241, the middle section 0242, and the second outlet 0243 are integrally formed. To guide the fluid to generate centrifugal force, assist in pushing open the valve core, and accelerate the water intake speed, the inner wall of the second inlet 0241 is provided with a spiral groove, and the inner wall of the second inlet 0241 is provided with a bracket 0244. The bracket 0244 is integrally connected to the middle section 0242 of the second valve body. The bracket 0244 ensures that the film valve core 021 is supported when the water injector 1 is under positive pressure. The bracket 0244 has a through hole with an internal thread, which, together with the fixing screw passing through the film valve core 021, securely connects the film valve core 021. When the second check valve 02 is closed, the edge of the film valve core 021 is attached to the end face of the middle section 0242 of the second valve body near the second outlet 0243, forming a seal inside the second check valve 02 and preventing water from flowing through. When the water injection ball 13 rebounds, a negative pressure is formed inside the water injector 1. Under the action of the negative pressure, the edge of the film valve core 021 inside the second check valve 02 undergoes elastic deformation and lifts up. After releasing the negative pressure, it quickly resets and seals.

[0080] The outer wall of the second outlet 0243 is fixedly connected to the retaining ring 022. The second one-way valve 02 is fixedly connected to the hole of the water injection ball 13. The second outlet 0243 passes through the hole 132 from the outside of the water injection ball 13. The retaining ring 022 is inserted into the extension 131 of the water injection ball 13 using a clamp and is threadedly connected to the part of the second outlet 0243 that passes through the hole 132. To prevent the liquid inside the water injection ball 13 from leaking at the connection with the second one-way valve 02, a plurality of gaskets 023 are fixedly connected between the retaining ring 022 and the middle section 0242 of the second valve body. Gaskets 023 are respectively provided between the retaining ring 022 and the inner wall of the hole 132 of the water injection ball 13, and between the end face of the middle section 0242 of the second valve body near the second outlet 0243 and the outer wall of the hole 132 of the water injection ball 13. The retaining ring 022 ensures that the second one-way valve 02 is fixed to the water injection ball 13, and multiple gaskets 023 increase the sealing effect at the connection to prevent water leakage. The diameter of the middle section 0242 of the second valve body is larger than the diameter of the second inlet 0241. The connection between the middle section 0242 of the second valve body and the second inlet 0241 is stepped. The film valve core 021 is fixedly connected to the bracket 0244, and the edge of the film valve core 021 is attached to the step on the inner wall of the middle section 0242 of the second valve body.

[0081] To prevent sterile saline solution from flowing into the injector 1 through the inlet pipe 3, an inlet pipe 3 is connected between the second inlet 0241 and the saline bag 2. One end of the inlet pipe 3 is connected to the saline bag 2, and the other end is connected to the second one-way valve 02. The inlet pipe 3 and the second valve body 024 of the second one-way valve 02 are connected with hot melt adhesive to ensure their sealing. A flow stop clamp 4 is provided on the inlet pipe 3. The inlet pipe 3, together with the flow stop clamp 4, allows for adjustable flow rate, avoiding liquid waste or operational errors.

[0082] To increase the flexibility of the water outlet pipe 5 during use, a first one-way valve 01 is fixed inside the water outlet 121, and a first outlet part 0133 extends out of the water outlet 121. The first outlet part 0133 is connected to the water outlet pipe 5 using hot melt adhesive. The water outlet pipe 5 is a flexible hose. The flexible hose is flexible and easy to bend, adaptable to complex operating scenarios, and meets medical-grade hygiene requirements.

[0083] To prevent the connection between the water-filled ball 13 and the cylinder 11 from loosening or deteriorating due to repeated compression, thus affecting the reliability of the device, a fixing protrusion is provided around the outside of the cylinder 11. This protrusion generates uniform pressure when the cable ties 6 are tightened, preventing downward sliding and displacement, and avoiding localized deformation or breakage. Multiple cable ties 6 are fixedly connected to the wrapping area between the extension 131 and the cylinder 11. The cable ties 6, through the fixing protrusion, tightly bind the water-filled ball 13 to the cylinder, preventing the connection from falling off or shifting. The elasticity of the extension 131 of the water-filled ball 13 and the tightness of the cable ties 6 prevent leakage at the connection between the water-filled ball 13 and the cylinder 11, thus ensuring a tight seal. The cable ties 6 are detachable, facilitating the replacement of the water-filled ball 13 or cleaning of the internal structure.

[0084] To enable intuitive monitoring of the water injection volume, the cylinder 11 is made of transparent plastic, with graduated markings 7 on its surface. The transparent plastic material allows operators to directly observe the liquid volume within the cylinder and monitor the injection status in real time. The transparent cylinder 11, combined with the graduated markings 7, displays the liquid level in real time, facilitating precise control of the injection volume and improving experimental accuracy. To prevent slippage on the smooth surface of the cylinder during operation, which could increase the risk of operational errors, anti-slip textures 8 are provided on the outer wall of the cylinder 11, arranged around its circumference. These textures accommodate different grip habits, especially in surgical settings, preventing accidental damage to patient tissues due to unstable handling and enhancing the safety of the experimental process.

[0085] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model.

Claims

1. A cardiac valve water testing device, characterized by, The utility model provides an injection device, which comprises a water injector (1), a first one-way valve (01) and a second one-way valve (02), the water outlet of the water injector (1) is fixedly connected with the first one-way valve (01), the water inlet of the water injector (1) is fixedly connected with the second one-way valve (02), and the second one-way valve (02) is connected with a saline bag (2) in a conductive mode. The water injector (1) comprises a barrel (11), a water outlet (12) and a water injection ball (13).

2. The cardiac valve water testing device of claim 1, wherein, The barrel (11) comprises an upper connecting part (111) and a lower connecting part (112), and the lower connecting part (112) is fixedly connected with the water outlet (12). A water outlet (121) is arranged at the lower end of the water outlet (12), and the water outlet (121) is fixedly connected with the first one-way valve (01). The water injection ball (13) comprises an extension part (131) and a hole (132), the extension part (131) is fixedly connected to the outer wall of the upper end of the upper connecting part (111), the hole (132) is arranged in the side of the water injection ball (13), and the second one-way valve (02) is fixedly connected in the hole (132). The extension part (131) is wrapped along the outer wall of the upper end of the barrel (11) in a circumferential direction.

3. The cardiac valve water testing device of claim 2, wherein, The first one-way valve (01) comprises a spherical valve core (011), a rebound spring (012) and a first valve body (013).

4. The cardiac valve water testing device of claim 3, wherein, The first valve body (013) comprises a first inlet part (0131), a first valve body middle segment (0132), a first threaded part (0135), a first outlet part (0133) and a support part (0134). The first inlet part (0131), the first valve body middle segment (0132), the first threaded part (0135) and the first outlet part (0133) are integrally formed. A spiral groove is arranged in the inner wall of the first inlet part (0131), and the lower end of the inner wall of the first outlet part (0133) is fixedly connected with the support part (0134). The first threaded part (0135) is threadedly connected in the water outlet (12), the diameter of the first threaded part (0135) is greater than that of the first valve body middle segment (0132), and the connection between the first threaded part (0135) and the first valve body middle segment (0132) is in a stepped form. The first valve body middle segment (0132) is internally provided with the spherical valve core (011), the diameter of the spherical valve core (011) is greater than that of the first inlet part (0131), the diameter of the first outlet part (0133) is greater than that of the spherical valve core (011), the upper side of the spherical valve core (011) abuts against the inner wall of the first inlet part (0131), the lower side of the spherical valve core (011) is supported and connected with the rebound spring (012), and the lower end of the rebound spring (012) is supported on the support part (0134). The second one-way valve (02) comprises a film valve core (021), a fixed ring (022), a gasket (023) and a second valve body (024).

5. The cardiac valve water testing device of claim 4, wherein, ​ The second valve body (024) is divided into a second inlet part (0241), a second valve body middle section (0242), a second outlet part (0243), and a bracket (0244); The second inlet part (0241), the second valve body middle section (0242), and the second outlet part (0243) are integrally formed; The inner wall of the second inlet part (0241) is provided with a spiral groove, and the inner wall of the second inlet part (0241) is provided with the bracket (0244); The outer wall of the second outlet part (0243) is fixedly connected with the fixed ring (022), and a plurality of gaskets (023) are fixedly connected between the fixed ring (022) and the second valve body middle section (0242); The diameter of the second valve body middle section (0242) is greater than that of the second inlet part (0241), the connection between the second valve body middle section (0242) and the second inlet part (0241) is stepped, the film valve core (021) is fixedly connected with the bracket (0244), and the edge of the film valve core (021) is attached to the inner wall step of the second valve body middle section (0242).

6. The cardiac valve water testing device of claim 5, wherein, The second inlet part (0241) and the saltwater bag (2) are connected with a water inlet pipe (3), and the water inlet pipe (3) is provided with a flow stop clamp (4).

7. A cardiac valve water testing device according to claim 6, wherein, The first outlet part (0133) extends out of the water outlet (121), and the first outlet part (0133) is connected with a water outlet pipe (5).

8. A cardiac valve water testing device according to claim 7, wherein, Further comprising: A tie (6), a fixed protrusion is protruded outside the barrel (11), and a plurality of ties (6) are fixedly connected at the wrapped part of the extension (131) and the barrel (11).

9. A cardiac valve water testing device according to claim 8, wherein, The barrel (11) is provided with a scale mark (7) on the surface.

10. The cardiac valve water testing device of claim 9, wherein, The outer wall of the barrel (11) is provided with anti-skid lines (8), and the anti-skid lines (8) are arranged around the barrel (11).

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