Mitral valve postoperative water test tube

Abstract

A mitral valve postoperative water test pipe comprises a water injection hose, a water inlet end threaded connector is fixed at one end of the water injection hose, a water outlet end piece is fixed at the other end of the water injection hose, an inner cavity is formed in the pipe wall of the water injection hose, a flexible metal piece is fixed in the inner cavity, and the axis of the flexible metal piece is parallel to the axis of the water injection hose. Compared with the prior art, the utility model has the technical effects that the heart valve state detection device is provided with the metal piece, can adjust a proper angle without influencing the bending, can be shaped after being bent, can stably maintain the shape after being bent, and is convenient for accurate detection of the heart valve state.

Description

Technical Field

[0001] This utility model belongs to the technical field of medical device components, specifically relating to a mitral valve postoperative test tube. Background Technology

[0002] Mitral valve surgery is an important treatment for valvular heart disease. Post-operatively, precise monitoring of the heart valves is necessary. This monitoring requires the injection of sterile saline solution. Specifically:

[0003] In minimally invasive heart valve repair surgery, such as mitral valve repair, after the heart has stopped beating and the left atrium is open, exposing the mitral valve, an external fluid source (e.g., a 100ml syringe or a pump flushing tube) is quickly and tightly connected to the threaded connector at the inlet of the test tube to ensure leak-free fluid delivery. The surgeon uses instruments (most often thoracoscopic forceps) to hold the test tube, adjusting it to a suitable angle so that the outlet end of the test tube is inserted into the left ventricle through the exposed mitral valve orifice, ensuring the outlet end just enters the left ventricle. Finally, sterile saline solution is rapidly introduced into the left ventricle, filling it. After filling, the product is quickly removed, and the mitral valve leakage can be observed.

[0004] Existing mitral valve repair tubing has many drawbacks in clinical applications. Traditional tubing is mostly made of rigid materials, making it difficult to adjust the angle flexibly in the complex environment of cardiac surgery. This makes it difficult for medical staff to fully detect subtle conditions after mitral valve repair, affecting diagnostic accuracy and treatment outcomes.

[0005] Some flexible test tubes, while having a certain bending ability, cannot maintain their shape stably after bending, and are not conducive to insertion from the left atrium into the left ventricle.

[0006] In general, the existing test tubes are not suitable for insertion into the heart. Utility Model Content

[0007] The technical problem to be solved by this utility model is: how to design a post-mitral valve intubation tube that is convenient for insertion into the heart.

[0008] The specific technical solution of this utility model is as follows:

[0009] A postoperative mitral valve intubation tube includes an inlet hose with a threaded connector fixed at one end and an outlet connector fixed at the other end. The hose has an inner cavity, and a flexible metal component is fixed inside the cavity. The axis of the flexible metal component is parallel to the axis of the inlet hose.

[0010] The flexible metal component is located inside the wall of the water injection hose and is not exposed on either the inner cavity or the outer surface of the hose.

[0011] The water injection hose is made of medical-grade silicone rubber, with flexible metal components embedded inside.

[0012] Flexible metal parts are made of metal wire.

[0013] The end of the water outlet fitting has a rounded chamfer.

[0014] Compared with the prior art, the technical effect of this utility model is that it has a metal part, which does not affect the bending and can be adjusted to a suitable angle. At the same time, it can be shaped after bending and maintains its shape stably, which facilitates accurate detection of the heart valve status. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the present invention.

[0016] Figure 2 This is a cross-sectional schematic diagram of the present invention. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0018] like Figure 1-2 A postoperative mitral valve intubation tube includes an intubation hose 2, with an inlet threaded connector 1 fixed at one end and an outlet connector 3 fixed at the other end. The intubation hose 2 has an inner cavity 2.2 inside its wall, and a flexible metal component 4 is fixed inside the inner cavity 2.2. The axis of the flexible metal component 4 is parallel to the axis of the intubation hose 2.

[0019] The "flexibility" in flexible metal parts refers to the fact that they can be bent at will, and after bending, the bent part can maintain its bent shape. They can be bent by hand or by mechanical force.

[0020] The flexible metal part 4 is located inside the wall of the water injection hose 2, and it is not exposed in the inner cavity 2.2 or the outer surface of the water injection hose 2.

[0021] The water injection hose 2 is made of medical-grade silicone rubber, and the flexible metal part 4 is embedded inside the water injection hose 2.

[0022] The flexible metal part 4 is a metal tube, which increases the complexity of manufacturing. It is better to make the flexible metal part 4 a metal wire.

[0023] The end of the water outlet component 3 has a rounded chamfer 3.1. The rounded chamfer can reduce the contact area and friction, and the soft material can buffer the contact stress. Even if the mitral valve is touched during the testing operation, it can minimize the damage to the repaired heart valve and reduce the risk of complications.

[0024] Its working principle is as follows:

[0025] I. Production

[0026] S1. Inlet Threaded Connector 1 Fabrication: Based on standard thread specifications, medical-grade stainless steel or high-strength medical-grade plastic is selected for injection molding. The inlet threaded connector 1 is manufactured through precision machining or injection molding. After machining, surface polishing and passivation are performed to ensure thread accuracy and smoothness. After fabrication, the inlet threaded connector 1 is connected to the inlet end of the flexible plastic water injection pipe using a special medical adhesive or heat sealing process to ensure a tight connection and good seal.

[0027] S2. Preparation of Flexible, Molded Water Injection Tube 2: Medical-grade silicone rubber raw materials are formulated according to a specific recipe. In a co-extrusion molding process, multiple extruders simultaneously extrude silicone rubber materials for the liquid channel, molded metal channel, and outer structure, fusing them in a mold to form a water injection tube with a specific structure. In a pre-embedded vulcanization process, the molded metal components are first pre-embedded in the uncured silicone blank according to the design position, then placed in a vulcanization mold and heated for vulcanization. In an injection molding process, the formulated silicone rubber raw material is injected into a specially designed mold cavity to form a water injection tube with both liquid and molded metal channels. Regardless of the process used, parameters such as temperature, pressure, and time must be strictly controlled to ensure that the quality and performance of the water injection tube meet medical standards.

[0028] S3. Assembly of Shaped Metal Components: Assemble the nickel-titanium alloy wires or metal strips one by one according to the preset weaving or winding pattern. Precisely control the spacing and angle of the metal wires to ensure the component is uniform and stable. After assembly, reinforce the connection points using medical-grade argon arc welding or special mechanical snap-fit ​​connections to ensure a firm connection.

[0029] S4. Fabrication and Connection of Water Outlet Component 3: Water outlet component 3 is fabricated using injection molding or vulcanization. The size and shape of the curved chamfer are precisely controlled in the mold design, and high-softness medical-grade silicone rubber is selected. After fabrication, water outlet component 3 is connected to the water outlet of the flexible plastic water injection pipe using a special medical adhesive or heat sealing process to ensure a tight connection and good seal.

[0030] S5. Integrated Molding: If vulcanization or injection molding is used, the raw materials or semi-finished products of the treated inlet threaded connector 1, the flexible, molded water injection main pipe 2, and the outlet component 3 are placed into an integrated mold. The components are then fused together as a single unit through vulcanization or injection molding. During the molding process, process parameters are strictly controlled to ensure a firm bond between components and that the overall sealing and structural strength meet requirements.

[0031] S6. Overall Testing: After completion of manufacturing, the test tube device undergoes comprehensive performance testing, including bending performance testing, shape stability testing, sealing testing, corrosion resistance testing, and damage testing to simulated mitral valve tissue. Only products whose performance indicators meet all relevant medical device standards and requirements can be put into clinical use.

[0032] Through the above series of manufacturing and testing steps, a flexible and malleable test tube device that meets the design requirements after mitral valve surgery can be produced.

[0033] In actual clinical applications, medical staff can flexibly operate the device according to the patient's specific condition and surgical needs to achieve efficient and safe postoperative mitral valve monitoring.

[0034] II. Usage

[0035] The specific process of using this patent is as follows: In minimally invasive heart valve repair surgery, such as mitral valve repair surgery, after the heart stops beating and the left atrium is open, exposing the mitral valve, an external liquid source, such as a 100ml syringe or a pump flushing tube, is quickly and tightly connected to the inlet threaded connector 1 to ensure no leakage during liquid delivery. The surgeon uses instruments (most often thoracoscopic forceps) to hold the injection tubing 2, adjusting it to a suitable angle so that the outlet part 3 is inserted into the left ventricle through the exposed mitral valve orifice from the left atrium. This ensures that the outlet part 3 can just enter the left ventricle, allowing sterile saline to quickly enter the left ventricle along the threaded connector inlet channel 1.1, the test main fluid channel 2.1, and the tubing outlet channel 3.2, filling the ventricle. After filling, the product is quickly removed, and the mitral valve leakage can be observed.

[0036] The above operations can be repeated multiple times.

[0037] III. Features of this application:

[0038] S1. The present invention aims to provide a flexible and shape-adjustable test tube device after mitral valve surgery, which solves the problems of existing test tubes in terms of operational flexibility, shape stability, metal corrosion resistance and protection of heart valves, improves the accuracy and safety of mitral valve surgery testing and reduces patient risk.

[0039] S2 features a flexible, shape-adjustable rigid metal structure within the tube, allowing for angle adjustments and enhanced controllability during water injection. The three outlet ports utilize a rounded chamfer design and are made of ultra-soft medical-grade silicone rubber. The rounded chamfer reduces contact area and friction, while the soft material cushions contact stress. Even if the mitral valve is touched during testing, damage to the repaired heart valve is minimized, reducing the risk of complications.

[0040] S3. The inlet threaded connector 1 adopts a standard thread design and is made of medical-grade corrosion-resistant metal or high-strength medical-grade plastic, which facilitates quick and tight connection with external liquid sources and ensures no leakage during liquid transportation.

[0041] S4. The flexible, malleable water injection main pipe 2 forms the main body of the device. It is made of biocompatible, soft, and tough medical-grade silicone rubber or other medical-grade tubing materials to provide a channel for liquid delivery and withstand external operational stress. The outlet end fitting 3 is connected to the outlet end of the flexible, malleable water injection main pipe 2, also made of soft medical-grade silicone rubber. The other end of the flexible, malleable water injection main pipe 2 is connected to the inlet threaded connector 1 to ensure flexible operation.

[0042] S5. Shaped Metal Components: An independent shaped metal channel is set inside the flexible, malleable water injection main pipe 2, containing a shaped metal component made of multiple high-strength, corrosion-resistant medical-grade metal wires or strips, such as nickel-titanium alloy. Through a special weaving or winding process, it forms a three-dimensional mesh structure with flexibility and shape memory capabilities. The metal wires or strips are fixed using medical-grade welding or mechanical connections, giving the water injection pipe the ability to freely change its curvature and angle while stably maintaining its shape.

[0043] S6. Isolation Design: Through co-extrusion molding, pre-embedded vulcanization, or injection molding processes, an independent liquid channel and a plastic metal channel are constructed within the flexible, soft water injection main pipe 2, so that the liquid and the plastic metal components are completely isolated, effectively preventing metal corrosion, ensuring the purity of the test liquid, and guaranteeing the accuracy of the test results.

[0044] S7. Special Design of the Water Outlet: The three ends of the water outlet feature a rounded chamfer design and are made of ultra-soft medical-grade silicone rubber. The rounded chamfer reduces the contact area and friction, while the soft material buffers contact stress. Even if the mitral valve is touched during testing, it minimizes damage to the repaired heart valve and reduces the risk of complications.

[0045] S8. Integrated Molding Design: Based on actual production needs, the water outlet component 3, the flexible plastic test pipe and the water inlet threaded connector 1 can be manufactured using vulcanization or injection molding integrated molding processes. This reduces the gaps between components, improves the overall sealing performance and structural strength, reduces the risk of liquid leakage, and simplifies the production process while improving production efficiency.

[0046] S9. Operational flexibility and stability: Medical staff can easily bend the test tube to any desired angle and maintain it stably, enabling precise multi-angle testing operations and improving testing efficiency and accuracy.

[0047] S10. Reliable test results: Independent liquid channels ensure the purity of the test liquid and avoid interference from metal corrosion impurities in the test results.

[0048] S11. Production and Usage Advantages: The integrated molding design improves sealing performance and structural strength, simplifies the production process, and facilitates clinical use.

[0049] For other details, please refer to the existing technology.

[0050] The above description is only a preferred embodiment of the present utility model. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present utility model, and these should also be considered within the protection scope of the present utility model.

Claims

1. A water testing tube after mitral valve surgery, comprising a water injection hose (2), one end of the water injection hose (2) is fixed into a water inlet end threaded joint (1), the other end is fixed into a water outlet end piece (3), characterized in that: The water injection hose (2) has an inner cavity (2.2) in the pipe wall, and a flexible metal piece (4) is fixed in the inner cavity (2.2), and the axis of the flexible metal piece (4) is parallel to the axis of the water injection hose (2).

2. The post-MVP trial water conduit of claim 1, wherein: The flexible metal piece (4) is located in the pipe wall of the water injection hose (2), and is not exposed on the inner cavity (2.2) and the outer surface of the water injection hose (2).

3. The post-MVP trial water conduit of claim 2, wherein: The water injection hose (2) is made of medical silicone rubber, and the flexible metal piece (4) is pre-embedded in the water injection hose (2).

4. The post-MVP trial water conduit of claim 3, wherein: The flexible metal piece (4) is a metal wire.

5. The post-MVP trial water conduit of claim 4, wherein: The end of the water outlet end piece (3) is a circular arc chamfer (3.1).

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