Aortic valve forming detector

Abstract

The utility model discloses an aortic valve forming detector which comprises a water injection pipe, the bottom of the water injection pipe is downwards connected with an inner fixing ring, a plurality of clamping pieces are arranged at the bottom of the water injection pipe in the peripheral direction, an aorta fixing area is formed between the clamping pieces and the inner fixing ring, and the top of the water injection pipe is connected with a water guide pipe. The inlet section of the water guide pipe is connected with an injector or an extracorporeal circulation machine, and the water guide pipe is further connected with a pressure gauge. The aorta wall can be clamped between the inner fixing ring and the clamping piece by arranging the outer buckle belt and the buckle, the aorta wall can be conveniently filled by arranging the water filling pipe and the water guide pipe, and meanwhile, the filling pressure can be measured by arranging the pressure gauge on the water guide pipe, so that the pressure in the aorta is in a physiological pressure range. Then, the aortic valve forming effect is directly detected through esophageal ultrasound.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to an aortic valve forming detector. Background Art

[0002] Heart valves are valves between the atria and ventricles or between the ventricles and arteries. Heart valves play a key role in blood circulation and can prevent blood from flowing back into the atria or ventricles that it has just left. The aortic valve is located between the left ventricle and the aorta. Most of it is composed of three leaflets, and the attachment edges of the leaflets cross the ventricle-artery junction in an arc shape. When the ventricle contracts, the forward blood flow fully opens the closed aortic leaflets. When the ventricle relaxes, the pressure in the left ventricular cavity drops and is lower than the pressure in the aorta, causing the aortic valve to close. When the valve morphology is normal, the three leaflets are aligned along the commissure edge and support the blood column in the aorta to prevent it from flowing back into the ventricle. Aortic insufficiency can be caused by lesions of the aortic leaflets and valve ring, as well as the ascending aorta. It is more common in male patients, accounting for about 75%, while female patients are often accompanied by mitral valve lesions. The main clinical manifestations are fatigue, palpitations, chest pain, exertional dyspnea, acute left heart failure, and even cardiogenic shock and acute pulmonary edema.

[0003] Clinically, there are two main ways to treat aortic regurgitation, one is aortic valve replacement, and the other is aortic valvuloplasty. Aortic valvuloplasty needs to be performed under extracorporeal circulation and cardiac arrest. First, the aorta is cut open, and then the aortic valve is repaired. After the repair is completed, the cut aorta is sutured, and then the circulation is opened and the heart is restarted. The effect of the repair is then evaluated under esophageal ultrasound. If the regurgitation effect is not good, it is necessary to block the ascending aorta again or even multiple times to stop the heart, and repair the aortic valve again or even multiple times, which significantly increases extracorporeal circulation and operation time. Multiple cardiac arrests and increased operation time will greatly increase the harm to the patient and the prognosis is poor.

[0004] Due to the complex structure of the aortic valve and the limitations of detection methods, the failure rate of aortic valvuloplasty is relatively high clinically. Therefore, after the aortic valvuloplasty operation is completed, its forming effect usually needs to be tested before opening the circulation. The detection principle is to use pressure testing to see whether the valve closes well after forming. The usual detection method is to inject water (usually saline) into the aorta to test the valve forming effect, which is called water injection test in the industry.

[0005] Existing valvuloplasty detection devices, such as CN206391003U, generally include a water injector and a water conduit. The device is acceptable in detecting mitral valvuloplasty, but not suitable for aortic valvuloplasty. First, the water conduit of the device cannot fit with the aortic wall to form a closed cavity, and cannot reach the physiological pressure in the aorta, so the detection effect is poor; second, the device judges the valvuloplasty effect by observing the aortic valve apposition with the naked eye, which is subjective, and the structure of the aortic valve is extremely complex, so it is impossible to achieve the purpose of detection by naked eye observation alone. Similarly, CN219289799U also observes its valvuloplasty effect with the naked eye. As shown in CN213076093U, it generally includes a water injector and a water conduit, and a pressure gauge is installed on the side wall of the water conduit. First, the device can only be used for the detection of the aortic valve in the operation of ascending aorta replacement at the same time, because its water conduit cannot fit with the native aortic wall to form a closed cavity, and cannot reach the physiological pressure in the aorta, but it can form a closed cavity in the replaced artificial blood vessel by tightening the artificial blood vessel with a rope ring outside, and then reach the physiological pressure in the aorta by water injection; secondly, the device indirectly judges the effect of aortic valve shaping by observing the pressure level. Its principle is to achieve a certain physiological pressure in the aorta by water injection, but this pressure is related to the pressure and flow of the water injection. The higher the pressure of the water injection and the greater the flow, the higher the pressure in the aorta. Therefore, it is impossible to determine whether the pressure level is maintained by the anti-reflux effect of the aortic valve or the pressure and flow of the water injection. Therefore, the judgment of the pressure measurement cannot be used as a standard for its shaping effect. Similarly, CN 218852680 U also judges its shaping effect by indirectly observing the pressure level. Utility Model Content

[0006] In order to solve the above technical problems, the technical solution provided by the utility model is: an aortic valve forming detector, including a water injection tube, which is a flexible tube and can be deformed. The bottom of the water injection tube is downwardly connected to an internal fixing ring, and the internal fixing ring is a hard tube. Several clips are arranged on the bottom of the water injection tube toward the outer circumference, and an aortic fixing area is formed between the clips and the internal fixing ring. The top of the water injection tube is connected to a water guide tube, and the inlet section of the water guide tube is connected to a syringe or an extracorporeal circulation machine. A pressure gauge is also connected to the water guide tube.

[0007] The advantages of the utility model compared with the prior art are: the utility model can clamp the aortic wall between the internal fixing ring and the clip by setting the external buckle and the bar buckle, so that the aorta and the device form a closed cavity, and the water injection tube and the water conduit can be conveniently perfused into the aorta, and the pressure gauge on the water conduit can be set to measure the perfusion pressure to ensure that the pressure in the aorta is within the physiological pressure range. Then the effect of aortic valvuloplasty is directly detected by esophageal ultrasound, and the apposition height of the aortic valve leaflets and the size of the regurgitant jet of the aortic valve can be more objectively observed by esophageal ultrasound, so it has more practical application value. We have verified the feasibility of esophageal ultrasound detection through simulation experiments. We have tested it in an operation of aortic valvuloplasty and ascending aorta replacement at the same time. After aortic valvuloplasty and ascending aorta replacement, the extracorporeal circulation perfusion tube is inserted into the artificial blood vessel and tightened with a knot with a rope, and then the cardioplegia fluid is continuously perfused into the ascending aorta artificial blood vessel. During this period, the shaping effect of the aortic valve is observed by esophageal ultrasound. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 The utility model is a structural schematic diagram of an aortic valve forming detector.

[0009] Figure 2 The utility model is a schematic diagram of the internal structure of an aortic valve forming detector.

[0010] Figure 3 The utility model is a schematic diagram of the structure of an external buckle in an aortic valve forming detector.

[0011] Figure 4 The utility model is a schematic structural diagram of the bottom of a water injection tube in an aortic valve forming detector. DETAILED DESCRIPTION

[0012] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0013] In the description of the embodiments of the present utility model, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0014] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0015] In the description of the embodiments of the present invention, "multiple" means at least 2.

[0016] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0017] Example:

[0018] Combined with Figure 1-4 , an aortic valve forming detector, including a water injection tube 1, the bottom of the water injection tube 1 is connected to an internal fixing ring 2 downward, a plurality of clips 3 are arranged circumferentially outward from the bottom of the water injection tube 1, an aortic fixing area 4 is formed between the clips 3 and the internal fixing ring 2, the top of the water injection tube 1 is connected to a water guide tube 5, the inlet section of the water guide tube 5 is connected to a syringe 6 or an extracorporeal circulation machine 7, and a pressure gauge 8 is also connected to the water guide tube 5; the internal fixing ring 2 is made of hard material, and the clips 3 are made of elastic material.

[0019] An external buckle belt 9 is circumferentially arranged on the outer side of the bottom of the clip 3, a part of the external buckle belt 9 is connected to the outside of one of the clips 3, and the rest is a free part. A cuff buckle 10 is connected in the free part. The cuff buckle 10 is hinged to the outside of a clip 3. The cuff buckle is similar to the fixed buckle in the roller skates in the prior art. When the cuff buckle 10 is fastened, the free part of the external buckle belt 9 is in close contact with the clip 3 and tightens each clip 3 so that the clip 3 and the inner fixing ring 2 are clamped. When the cuff buckle 10 is unfastened, the free part of the external buckle belt 9 loosens the clip 3 so that a gap appears between the clip 3 and the inner fixing ring 2.

[0020] During the specific implementation, the aortic wall is first fitted onto the hard internal fixation ring, and then the clip is fitted onto the outside of the aortic wall. After fastening the cuff of the external buckle, the aortic wall is clamped between the internal fixation ring and the clip to prevent water leakage from the aortic wall. Then, a large syringe or an extracorporeal circulation machine is used to inject water into the water injection tube through the water conduit. At the same time, the pressure gauge on the water conduit can be used to measure the perfusion pressure to ensure that the pressure in the aorta is within the physiological pressure range. Then, the effect of aortic valve formation is directly detected through esophageal ultrasound.

[0021] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. An aortic valvuloplasty detector, characterized in that: It includes a water injection pipe, the bottom of which is downwardly connected to an internal fixing ring, the water injection pipe is a hose, the internal fixing ring is a hard pipe, a number of clips are circumferentially arranged outward from the bottom of the water injection pipe, an aorta fixing area is formed between the clips and the internal fixing ring, the top of the water injection pipe is connected to a water pipe, the inlet section of the water pipe is connected to a syringe or an extracorporeal circulation machine, and a pressure gauge is also connected to the water pipe.

2. The aortic valvuloplasty detector according to claim 1, characterized in that: The inner fixing ring is made of hard material, and the clip is made of elastic material.

3. The aortic valvuloplasty detector according to claim 1, characterized in that: An external buckle belt is circumferentially arranged on the outer side of the bottom of the clip, a part of the external buckle belt is connected to the outside of one of the clips, and the rest is a free part. A cuff buckle is connected in the free part, and the cuff buckle is hinged to the outside of a clip. When the cuff buckle is fastened, the free part of the external buckle belt is in close contact with the clip and tightens each clip so that the clip and the inner fixing ring are clamped. When the cuff buckle is unfastened, the free part of the external buckle belt loosens the clip so that a gap appears between the clip and the inner fixing ring.

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