Method and device for determining artificial heart valve, and computer equipment

Abstract

The present application discloses a method, apparatus, and computer device for determining an artificial heart valve. The method comprises: obtaining an anatomical image of the target area to be implanted; extracting structural parameters of the target area from the anatomical image; determining target setting parameters for the artificial heart valve based on a first target parameter among the structural parameters, wherein the first target parameter includes at least one of the following groups: a first parameter group and a second parameter group, the first parameter group including: aortic valve annulus size and left ventricular outflow tract size; the second parameter group including: sinotubular junction size and ascending aorta size; determining the target artificial heart valve based on the target setting parameters. The present application solves the technical problem of inaccurate artificial heart valve size selection.

Description

Technical Field

[0001] The present application relates to the field of valve implantation, and more specifically, to a method and apparatus for determining an artificial heart valve, and computer equipment. Background Art

[0002] Aortic regurgitation, also known as aortic insufficiency, refers to the inability of the aortic valve to close completely when the left ventricle relaxes to fill with blood from the left atrium, and blood leaks back into the left ventricle from the aorta. Aortic regurgitation increases the blood volume and pressure in the left ventricle, leading to compensatory hypertrophy of the ventricular muscle, enlargement of the ventricular cavity, heart failure, etc. In the existing technology, surgical treatment is the first choice, but the operation is traumatic, risky, and clinically ineffective. Transcatheter aortic valve treatment is still in the development stage. Existing artificial heart valves for the treatment of aortic regurgitation are generally designed with a "clamp" fixed to the heart's native valve leaflets. This design has a good anchoring function. In addition, in addition to fixing the artificial heart valve with a "clamp", it can also be anchored by the artificial valve's own large radial support force, but this solution is still in the exploratory stage.

[0003] During transcatheter treatment of aortic regurgitation, the selection and anchoring of the prosthetic valve are crucial. If the prosthetic valve is too small, it can easily shift and slide, resulting in incomplete closure. If it is too large, it may not fully expand, shortening its lifespan. Improper implantation can easily lead to post-implantation complications. For example, if the valve is implanted too deeply, the stent can squeeze the membranous ventricular septum, causing conduction block and potentially obstructing the anterior leaflet of the mitral valve. Summary of the Invention

[0004] The embodiments of the present application provide a method and apparatus for determining an artificial heart valve, and a computer device, to at least solve the technical problem of inaccurate selection of artificial heart valve size.

[0005] According to one aspect of an embodiment of the present application, a method for determining an artificial heart valve is provided, comprising: acquiring an anatomical structure image of a target area to be implanted; extracting structural parameters of the target area from the anatomical structure image; determining target setting parameters of the artificial heart valve based on a first target parameter among the structural parameters, wherein the first target parameter comprises at least one of the following groups: a first parameter group and a second parameter group, the first parameter group comprising: the size of the aortic valve annulus and the size of the left ventricular outflow tract, the second parameter group comprising: the size of the sinotubular junction and the size of the ascending aorta; and determining the target artificial heart valve based on the target setting parameters.

[0006] Optionally, the target setting parameters are determined based on the first target parameter in the structural parameters, including: obtaining a cross-sectional view of the anatomical structure of the target area; determining the structural type of the ascending aorta and left ventricular outflow tract in the cross-sectional view based on the structural parameters; and determining the target setting parameters according to the structural type of the ascending aorta and left ventricular outflow tract in the cross-sectional view.

[0007] Optionally, the structural types of the ascending aorta and left ventricular outflow tract in the cross-sectional view are determined based on the structural parameters, including: when the ratio of the ascending aorta size to the size at the sinus-tubular junction is less than a set first threshold or greater than a set second threshold, determining that the ascending aorta is trapezoidal; when the ratio of the ascending aorta size to the size at the sinus-tubular junction is between the first threshold and the second threshold, determining that the ascending aorta is straight-cylindrical; when the ratio of the aortic valve ring size to the size at the left ventricular outflow tract is less than a set third threshold or greater than a set fourth threshold, determining that the left ventricular outflow tract is trapezoidal; when the ratio of the aortic valve ring size to the size at the left ventricular outflow tract is between the third threshold and the fourth threshold, determining that the left ventricular outflow tract is straight-cylindrical.

[0008] Optionally, the target setting parameters are determined according to the different structural types of the ascending aorta and left ventricular outflow tract in the cross-sectional view, including: when the left ventricular outflow tract is a straight cylindrical type, the target setting parameter is determined to be a first set multiple value of the size of the artificial heart valve at the first set point position that is not less than the aortic valve ring size; when the left ventricular outflow tract is a first type trapezoidal type, the target setting parameter is determined based on the size at the first set point position and the maximum diameter of the artificial heart valve at the second set point position; when the left ventricular outflow tract is a second type trapezoidal type, the target setting parameter is determined to be a second set multiple value of the size at the first set point position that is not less than the aortic valve ring size.

[0009] Optionally, when the left ventricular outflow tract is a first-class trapezoid, the target setting parameters are determined based on the size at the first set point and the maximum size of the artificial heart valve at the second set point, including: when the ascending aorta is a straight cylinder and the left ventricular outflow tract is a first-class trapezoid, the target setting parameters are determined to be that the size at the first set point is not less than a first set multiple of the aortic valve annulus size and the maximum size of the artificial heart valve at the second set point is not less than a first set multiple of the ascending aorta size; when both the ascending aorta and the left ventricular outflow tract are first-class trapezoids, the target setting parameters are determined to be that the size at the first set point of the artificial heart valve is not less than a first set multiple of the aortic valve annulus size and the maximum size of the artificial heart valve at the second set point is not less than a first set multiple of the sinotubular junction size; when the ascending aorta is a second-class trapezoid and the left ventricular outflow tract is a first-class trapezoid, the target setting parameters are determined to be that the size at the first set point is not less than a second set multiple of the aortic valve annulus size and the maximum size of the artificial heart valve at the second set point is not less than the ascending aorta size.

[0010] Optionally, before determining the target setting parameters of the artificial heart valve based on the first target parameter among the structural parameters, the method also includes: obtaining designated structural parameters of the target area, wherein the designated structural parameters include at least one of the following: valve orifice blood flow velocity, average transvalvular pressure difference and valve orifice area of ​​the target area; determining the parameter value of the designated structural parameter and comparing it with the corresponding fifth threshold; and determining whether to execute the step of determining the target setting parameters of the artificial heart valve based on the comparison result.

[0011] According to another aspect of an embodiment of the present application, a data display method is also provided, including: displaying an anatomical structure image of a target area to be implanted; displaying structural parameters of the target area extracted from the anatomical structure image, and determining target setting parameters of an artificial heart valve based on a first target parameter among the structural parameters, wherein the first target parameter includes at least one of the following groups: a first parameter group and a second parameter group, the first parameter group includes: the size of the aortic valve annulus and the size of the left ventricular outflow tract, and the second parameter group includes: the size of the sinotubular junction and the size of the ascending aorta.

[0012] According to another aspect of the embodiment of the present application, a device for determining an artificial heart valve is also provided, including: an acquisition module for acquiring an anatomical structure image of a target area to be implanted; an extraction module for extracting structural parameters of the target area from the anatomical structure image; a first determination module for determining target setting parameters of the artificial heart valve based on a first target parameter among the structural parameters, wherein the first target parameter includes at least one of the following groups: a first parameter group and a second parameter group, the first parameter group including: aortic valve annulus size and left ventricular outflow tract size, the second parameter group including: sinotubular junction size and ascending aorta size; a second determination module for determining the target artificial heart valve based on the target setting parameters.

[0013] According to another aspect of the embodiments of the present application, a non-volatile storage medium is provided, which includes a stored program, wherein when the program is running, the device where the non-volatile storage medium is located is controlled to execute the above-mentioned method for determining the artificial heart valve.

[0014] According to another aspect of the embodiments of the present application, a computer device is provided, including a memory and a processor; the processor is used to run a program stored in the memory, wherein the above-mentioned method for determining an artificial heart valve is executed when the program is run.

[0015] In an embodiment of the present application, an anatomical image of a target area to be implanted is obtained; structural parameters of the target area are extracted from the anatomical image; and target setting parameters of the artificial heart valve are determined based on a first target parameter in the structural parameters, wherein the first target parameter includes at least one of the following groups: a first parameter group and a second parameter group, the first parameter group including: aortic valve annulus size and left ventricular outflow tract size, and the second parameter group including: sinotubular junction size and ascending aorta size. The target artificial heart valve is determined based on the target setting parameters. The structural parameters of the target area are determined by analyzing the anatomical structure in the anatomical image, and the type of artificial heart valve to be implanted is determined by comparing the structural parameters with the artificial heart valve. The high radial support force of the existing artificial heart valve stent is utilized to achieve anchoring of the implanted artificial heart valve, thereby achieving the purpose of anchoring the appropriate artificial heart valve in the target area, thereby achieving the technical effect of improving the accuracy of artificial heart valve size selection, and further solving the technical problem of inaccurate artificial heart valve size selection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 A hardware structure block diagram of a computer terminal (or mobile device) for implementing a method for determining an implanted valve is shown;

[0018] Figure 2 is a flow chart of an optional method for determining an implanted valve according to an embodiment of the present application;

[0019] Figure 3 is a schematic diagram of an optional implantable valve according to an embodiment of the present application;

[0020] Figure 4 is an optional cross-sectional view of the aorta physiological structure according to an embodiment of the present application;

[0021] Figure 5a This is a schematic diagram of an optional aortic cross-section in which the ascending aorta is a straight cylindrical shape according to an embodiment of the present application;

[0022] Figure 5b This is another optional schematic diagram of an aortic cross-section in which the ascending aorta is a straight cylindrical shape according to an embodiment of the present application;

[0023] Figure 5c This is a schematic diagram of an aortic cross-section in which the ascending aorta is a straight cylindrical shape according to another optional embodiment of the present application;

[0024] Figure 5dThis is a schematic diagram of an optional artificial valve implantation scenario according to an embodiment of the present application, in which the left ventricular outflow tract is a first-class trapezoidal anatomical structure and the ascending aorta is a straight cylindrical structure;

[0025] Figure 6a This is a schematic diagram of an aortic cross-section in which the ascending aorta is a first-class trapezoidal shape according to an optional embodiment of the present application;

[0026] Figure 6b This is another optional schematic diagram of an aortic cross-section in which the ascending aorta is a first-class trapezoidal shape according to an embodiment of the present application;

[0027] Figure 6c This is a schematic diagram of an aortic cross-section in which the ascending aorta is a first-class trapezoidal shape according to another optional embodiment of the present application;

[0028] Figure 6d This is a schematic diagram of an optional artificial valve implantation scenario according to an embodiment of the present application, in which the left ventricular outflow tract is a straight cylinder and the ascending aorta is a first-class trapezoidal anatomical structure;

[0029] Figure 7a This is a schematic diagram of an aortic cross-section in which the ascending aorta is a second-type trapezoidal shape according to an optional embodiment of the present application;

[0030] Figure 7b This is another optional schematic diagram of an aortic cross-section in which the ascending aorta is a second type of trapezoidal shape according to an embodiment of the present application;

[0031] Figure 7c This is a schematic diagram of an aortic cross-section in which the ascending aorta is a second type of trapezoid according to another optional embodiment of the present application;

[0032] Figure 7d This is a schematic diagram of an optional artificial valve implantation scenario under an anatomical structure in which the left ventricular outflow tract is a second-class trapezoidal shape and the ascending aorta is a second-class trapezoidal shape according to an embodiment of the present application;

[0033] Figure 8 is a schematic diagram of an optional valve implant and the surrounding environment of the aortic valve according to an embodiment of the present application;

[0034] Figure 9 is a schematic diagram of a device for determining an optional implantable valve according to an embodiment of the present application;

[0035] Figure 10 This is a flow chart of an optional data display method according to an embodiment of the present application. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0037] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in a sequence other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0038] For ease of description, some nouns or terms involved in the embodiments of the present application are explained below:

[0039] Blood flow direction: from the left ventricle through the aortic valve into the aorta;

[0040] Artificial aortic valve: The artificial aortic valve, artificial heart valve, artificial valve or implanted valve referred to in this invention refers to a prosthetic valve implanted in the heart to replace the diseased aortic valve in the human body. After implantation in the human body, it can maintain unidirectional blood flow and has the function of a natural heart valve;

[0041] Valve inflow end: the end of the artificial valve where blood flows in, that is, the end closest to the left ventricle after the valve is implanted;

[0042] Outflow port: The end of the prosthetic valve from which blood flows out, that is, the end closest to the ascending aorta after the valve is implanted.

[0043] Aortic annulus: The plane formed by the lowest points of the valve leaflet root attachment edge and the ventricle-aorta junction is approximately circular. The size of this ring is the size of the aortic annulus and can be expressed as mean diameter, diameter, circumference or area.

[0044] Left ventricular outflow tract: The section of the left ventricle from the apex to the aortic annulus. Blood flows from the left ventricular outflow tract to the aortic valve. A section parallel to the plane of the aortic annulus is made 3-6 mm below the plane of the aortic annulus. This section defines the plane of the left ventricular outflow tract, which can be expressed as mean diameter, diameter, circumference, or area.

[0045] Sinutubular junction: The junction of the aortic sinus and the ascending aorta at the outflow end of the aortic valve. A section parallel to the plane of the aortic annulus is made at this location. The plane determined by this section is the size of the sinutubular junction, which can be expressed as mean diameter, diameter, circumference, or area.

[0046] Ascending aorta: The portion of the aorta that originates from the left ventricle and extends toward the aorta along the sinotubular junction. A transverse section of the ascending aorta is made 30-40 mm above the aortic annulus. This plane defines the dimensions of the ascending aorta, which can be expressed as mean diameter, diameter, circumference, or area.

[0047] According to an embodiment of the present application, a method embodiment of a method for determining an artificial heart valve is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0048] The method embodiments provided in the embodiments of the present application can be executed in a mobile terminal, a computer terminal or a similar computing device. Figure 1 FIG1 shows a hardware structure block diagram of a computer terminal (or mobile device) for implementing an artificial heart valve determination method. Figure 1 As shown, the computer terminal 10 (or mobile device 10) may include one or more (illustrated as 102a, 102b, ..., 102n) processors 102 (the processor 102 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA), a memory 104 for storing data, and a transmission module 106 for communication functions. In addition, it may also include: a display, an input / output interface (I / O interface), a universal serial bus (USB) port (which may be included as one of the ports of the I / O interface), a network interface, a power supply and / or a camera. It will be understood by those skilled in the art that Figure 1 The structure shown is only for illustration and does not limit the structure of the above electronic device. Figure 1More or fewer components than shown, or with Figure 1 Different configurations shown.

[0049] It should be noted that the one or more processors 102 and / or other data processing circuits described above may generally be referred to herein as "data processing circuitry". The data processing circuitry may be embodied in whole or in part as software, hardware, firmware, or any other combination thereof. In addition, the data processing circuitry may be a single independent processing module, or may be incorporated in whole or in part into any of the other components of the computer terminal 10 (or mobile device). As described in the embodiments of the present application, the data processing circuitry serves as a processor control (e.g., selection of a variable resistor terminal path connected to an interface).

[0050] The memory 104 can be used to store software programs and modules of application software, such as the program instructions / data storage device corresponding to the method for determining an artificial heart valve in the embodiment of the present invention. The processor 102 executes various functional applications and data processing by running the software programs and modules stored in the memory 104, that is, implementing the vulnerability detection method of the above-mentioned application. The memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include a memory remotely located relative to the processor 102, and these remote memories may be connected to the computer terminal 10 via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0051] The transmission module 106 is configured to receive or transmit data via a network. A specific example of the aforementioned network may include a wireless network provided by the communications provider of the computer terminal 10. In one embodiment, the transmission module 106 includes a network interface controller (NIC), which can be connected to other network devices via a base station to enable communication with the Internet. In another embodiment, the transmission module 106 may be a radio frequency (RF) module, which is configured to communicate with the Internet wirelessly.

[0052] The display may be, for example, a touch screen liquid crystal display (LCD) that enables a user to interact with a user interface of the computer terminal 10 (or mobile device).

[0053] In the above operating environment, Figure 2 A method for determining an artificial heart valve is implemented by a computer according to an embodiment of the present application, such as Figure 2 As shown, the method includes the following steps:

[0054] Step S202, obtaining an anatomical structure image of the target area to be implanted;

[0055] Step S204, extracting structural parameters of the target area from the anatomical structure image;

[0056] Step S206, determining target setting parameters for the artificial heart valve based on the first target parameter in the structural parameters, wherein the first target parameter includes at least one of the following groups: a first parameter group and a second parameter group, the first parameter group includes: aortic valve annulus size and left ventricular outflow tract size, and the second parameter group includes: sinotubular junction size and ascending aorta size.

[0057] Step S208: determining a target artificial heart valve according to the target setting parameters.

[0058] Through the above steps, it is possible to determine the type of artificial heart valve to be implanted by comparing the structural parameters with the artificial heart valve, utilize the high radial support force of the existing artificial heart valve stent to achieve the anchoring of the implanted artificial heart valve, and achieve the purpose of selecting an appropriate artificial heart valve to anchor in the target area, thereby achieving the technical effect of improving the accuracy of artificial heart valve size selection, and thus solving the technical problem of inaccurate artificial heart valve size selection.

[0059] It should be noted that the artificial heart valve determination method provided in the embodiment of the present application is applicable to situations where it is confirmed that the aortic valve only has regurgitation or has regurgitation as the main feature or has stenosis. The structural parameters of the target area are extracted from the anatomical structure image, which can be extracted by computer vision. Furthermore, the obtained structural parameters are used to model the anatomical structure, and the determination can include determining the parameter values ​​expressed by the parameter model of the target area to be implanted. The parameter model can have a parameter model for the anatomical model. Once the parameter model of the target area is determined based on the parameter values ​​that provide the closest match to the data of the three-dimensional image representing the target area, these parameters can be used in the parameter model of the anatomical model to determine the prediction of the anatomical model of the target. The obtained structural parameters can be stored in a database and can be used as training data for the artificial heart valve selection model.

[0060] In the embodiment of the present application, the artificial heart valve may have a configuration with one or both ends flared and the middle contracted or straight, or may have an overall straight configuration, preferably with a structure with both ends flared and the middle contracted. Figure 3The artificial heart valve shown includes a stent, a tri-leaflet valve leaflet, and a skirt. The stent has a mesh structure with flared ends. Before implantation, the artificial heart valve is compressed to a smaller size and loaded into the human body through an interventional delivery device. After reaching the aorta to be implanted, it expands through its own deformation. The shape of the valve after expansion matches the physiological and anatomical structure of the human body, so that the artificial heart valve interacts with human tissue at the aortic valve ring, the sinus-tubular junction, and the ascending aorta. The artificial heart valve has Figure 3 The configuration shown can also have any other configuration that conforms to the human anatomy. For example, a prosthetic heart valve can be designed as a straight cylinder. This design interacts with human tissue at the aortic annulus, providing anchoring at the annulus. Prosthetic heart valves of different configurations achieve stable anchoring at various locations within the human body through high radial support.

[0061] The dimensions in the embodiments of the present application include, but are not limited to, mean diameter, diameter, circumference, and area. Any dimensional parameter that can be compared to determine the type of left ventricular outflow tract or ascending aorta may be substituted. For ease of description, "diameter" will be used as the dimension in the following specific descriptions.

[0062] like Figure 4 As shown in the figure, it is a cross-sectional view of the normal physiological structure of the aorta, specifically the ascending aorta corresponds to the height range of 30-40mm above the aortic valve ring, and the ascending aorta size corresponds to the cross-section of the ascending aorta within this height range.

[0063] As shown in the figure, point A is located in the ascending aorta, 30mm-40mm above the valve annulus, and the diameter of the ascending aorta Dasc-a is measured at point A; point B is located at the aortic valve sinus-tubular junction, and the diameter of the sinus-tubular junction Dstj is measured at point B; point C is located at the aortic valve annulus, and the diameter of the aortic valve annulus Daa is measured at point C; point D is located 3-6mm below the valve annulus, usually the outermost edge of the inflow end of the artificial heart valve stent, and the diameter of the left ventricular outflow tract Dlvot is measured at point D.

[0064] It should be noted that the outflow end of the artificial heart valve corresponds to the sinotubular junction and the ascending aorta above it. The position corresponding to the maximum size of the valve outflow end is the 30-40mm height range above the valve ring, that is, point A. This position has different values ​​according to the design of different artificial valves. To judge the anchoring effect of the artificial heart valve outflow end, it is necessary to analyze the interactions within this range. The inflow end of the artificial heart valve corresponds to the aortic valve ring and the position below the valve ring, that is, the range of 3-6mm below the valve ring and the valve ring plane. The position corresponding to the outermost edge of the valve inflow end is the range of 3-6mm below the valve ring, that is, point D. This position has different values ​​according to the implantation requirements below the valve ring of different artificial valves. To judge the anchoring effect of the artificial heart valve inflow end, it is necessary to analyze the interactions within this range.

[0065] In some optional methods, taking the aorta and surrounding tissues as the target area to be implanted as an example, image data of the anatomical structure of the aorta and surrounding tissues are obtained; the image data can be obtained by ultrasound, computed tomography, magnetic resonance imaging, etc., wherein the anatomical structure of the surrounding tissues includes the left ventricular outflow tract, aortic valve ring, aortic sinus, coronary artery orifice, ascending aorta, etc.; the image data can obtain the aortic valve ring diameter Daa, the left ventricular outflow tract diameter Dlvot, the sinus-tubular junction diameter Dstj, the coronary sinus size, the coronary artery orifice height, the leaflet length, the leaflet opening area, the ascending aorta diameter Dasc-a, hemodynamics, and other structural parameters corresponding to special situations, and clarify the parameter values ​​or ranges corresponding to the above image data.

[0066] In some embodiments of the present application, after acquiring the image data, noise reduction processing may be performed on the acquired image data, for example, by segmenting and removing the image data except for the target area.

[0067] In some embodiments of the present application, the target setting parameters can be determined by: obtaining a cross-sectional view of the anatomical structure of the target area; determining the structural type of the ascending aorta and left ventricular outflow tract in the cross-sectional view based on the structural parameters; and determining the target setting parameters according to the structural type of the ascending aorta and left ventricular outflow tract in the cross-sectional view.

[0068] It should be noted that the target setting parameters are used to indicate the conditions that the valve to be implanted needs to meet.

[0069] In some optional embodiments, the first target parameter includes multiple parameters for evaluating the patient's aortic-specific anatomical structure, including: aortic valve annulus diameter Daa, left ventricular outflow tract diameter Dlvot, sinotubular junction diameter Dstj, and ascending aorta diameter Dasc-a.

[0070] In some embodiments of the present application, the structural types of the ascending aorta and the left ventricular outflow tract in the cross-sectional view can be determined in the following manner: when the ratio of the ascending aorta diameter to the diameter at the sinotubular junction is less than a set first threshold value or greater than a set second threshold value, the ascending aorta is determined to be trapezoidal; when the ratio of the ascending aorta diameter to the diameter at the sinotubular junction is between the first threshold value and the second threshold value, the ascending aorta is determined to be straight cylindrical; when the ratio of the aortic valve ring diameter to the left ventricular outflow tract diameter is less than a set third threshold value or greater than a set fourth threshold value, the left ventricular outflow tract is determined to be trapezoidal; when the ratio of the aortic valve ring diameter to the left ventricular outflow tract diameter is between the third threshold value and the fourth threshold value, the left ventricular outflow tract is determined to be straight cylindrical.

[0071] Specifically, the relative sizes of the annulus and left ventricular outflow tract, and the sinotubular junction and ascending aorta are determined. The left ventricular outflow tract and the annular plane jointly define a space. This space has a two-dimensional shape, or a cross-sectional view, along a radial section of the annular plane. This two-dimensional shape can be determined to be either a straight cylinder or a trapezoidal shape based on the relative sizes of the aortic annulus diameter Daa and the left ventricular outflow tract diameter Dlvot. Similarly, the sinotubular junction and the ascending aorta 30-40 mm above the annulus jointly define another space. This space has a two-dimensional shape, or a cross-sectional view, along a radial direction of the ascending aorta cross section. This two-dimensional shape can be determined to be either a straight cylinder or a trapezoidal shape based on the relative sizes of the sinotubular junction diameter Dstj and the ascending aorta diameter Dasc-a.

[0072] It should be noted that the first threshold, the second threshold, the third threshold, the fourth threshold and the fifth threshold in the present application can all be preset.

[0073] For example: when the diameter of point A Dasc-a is close to the diameter of point B Dstj, that is, the value range of Dasc-a / Dstj is 0.95-1.15, it can be understood that the quadrilateral determined by Dasc-a and Dstj as the side lengths is a straight cylinder, such as Figure 5a 、 5b As shown in Figure 5c, the shadow area shows the simplified model of the ascending aorta above the sinus-tubular junction, that is, the ascending aorta structure is determined to be a straight cylinder according to the Dasc-a and Dstj diameters; similarly, when the Dasc-a / Dstj value is less than 0.95, the ascending aorta structure is a first-class trapezoidal shape, as shown in Figure 5c. Figure 6a 、 6b and the ascending aorta shown in 6c; when the Dasc-a / Dstj value is greater than 1.15, the ascending aorta structure is a second type trapezoid, as shown in Figure 7a 、 7b Similarly, when the diameter Daa at point C is close to the diameter Dlvot at point D, that is, the value range of Daa / Dlvot is 0.96-1.03, it can be understood that the quadrilateral determined by Daa and Dlvot as the side lengths is a straight cylinder, as shown in Figure 7c. Figure 5a 、 6a , 7a left ventricular outflow tract, the inflow end of the figure shows the simplified model of the aortic valve ring and the left ventricular outflow tract, that is, according to the Daa and Dlvot diameters, the left ventricular outflow tract structure is a straight cylinder; similarly, when the Daa / Dlvot value is less than 0.96, the left ventricular outflow tract structure is a first-class trapezoidal shape, such as Figure 5b 、 6b , 7b aortic valve inflow end; when the Daa / Dlvot value is greater than 1.03, the left ventricular outflow tract structure is the second type trapezoidal, as shown in Figure 5c 、 6c ,7c shown in the left ventricular outflow tract.

[0074] For patients who are suitable for artificial aortic valve replacement, data is acquired, processed, and analyzed through imaging, computer simulation, etc., and an artificial heart valve that meets the conditions is selected. The method proposed in the embodiment of the present application is applicable to situations where there is pure aortic regurgitation or stenosis characterized by regurgitation as the main feature. Selecting an artificial heart valve that meets the conditions means that the artificial heart valve that meets the conditions can be stably anchored in the native structure of the aortic valve without displacement after implantation, the leaflets of the artificial heart valve replace the native diseased leaflets and work normally without regurgitation, the circumferential occlusion of the artificial heart valve is complete without paravalvular leakage, specifically, the valve point C is completely circumferentially blocked from the valve ring and the valve point A; the radial support force can support the implanted valve without displacement.

[0075] After implantation into the human body, the artificial heart valve is located between the left ventricular outflow tract and the ascending aorta, that is, within the range of point A and point D. In some optional embodiments, the artificial heart valve can be a self-expanding valve or a ball-expanding valve. The artificial heart valve can have any structure that adapts to the physiological structure of the human body, for example: one or both ends of the valve are overall flared, the middle is a straight tube or a contracted structure, or it can have an overall straight tube configuration. The overall flaring means that the inflow end and / or outflow end of the valve can have a local single or multiple straight tube or contracted trend in extending toward both ends. In some optional embodiments, the outermost edge of the outflow end of the valve has a slightly contracted state.

[0076] In some embodiments of the present application, the target setting parameters can be determined by the following methods, including: when the left ventricular outflow tract is straight, such as Figure 5a 、 6a As shown in FIG7a, the target setting parameter is determined to be that the diameter of the artificial heart valve at the first setting point is not less than the first setting multiple value of the aortic valve annulus diameter; in the case where the left ventricular outflow tract is a first type trapezoid, as shown in FIG7a. Figure 5b 、 6b As shown in FIG7b, the target setting parameter is determined according to the diameter at the first setting point and the maximum diameter at the second setting point of the artificial heart valve; in the case where the left ventricular outflow tract is a second type trapezoid, as shown in FIG7b. Figure 5c 、 6c As shown in FIG7 c , the target setting parameter is determined to be a second setting multiple value of the diameter at the first setting point that is not less than the aortic valve annulus diameter.

[0077] It needs to be explained that, Figure 3As shown, the first set point can be a point on the artificial heart valve parallel to point C, and the corresponding diameter is Di, specifically 3-6 mm above the outer edge of the inflow end of the artificial heart valve; the second set point can be a point corresponding to the maximum diameter of the outflow end of the artificial heart valve, and the corresponding diameter is Do; the first set multiplier value can be 1.1, and the second set multiplier value can be any value between 1.1-1.15.

[0078] Furthermore, when the ascending aorta is straight and the left ventricular outflow tract is a first-class trapezoidal shape, the target setting parameters are determined as follows: the diameter at the first setting point is not less than a first setting multiple of the aortic valve annulus diameter, and the maximum diameter of the artificial heart valve at the second setting point is not less than the first setting multiple of the ascending aorta diameter;

[0079] In a case where both the ascending aorta and the left ventricular outflow tract are first-class trapezoidal, determining the target setting parameters as follows: a diameter of the artificial heart valve at a first setting point is not less than a first setting multiple of the diameter of the aortic valve annulus, and a maximum diameter of the artificial heart valve at a second setting point is not less than a first setting multiple of the diameter of the sinotubular junction;

[0080] When the ascending aorta is a second-class trapezoid and the left ventricular outflow tract is a first-class trapezoid, the target setting parameters are determined to be that the diameter at the first setting point is not less than a second setting multiple of the aortic valve annulus diameter and the maximum diameter of the artificial heart valve at the second setting point is not less than the ascending aorta diameter.

[0081] Specifically, Figure 5a The middle ascending aorta and the left ventricular outflow tract are both straight cylindrical structures, that is, the Dasc-a / Dstj value range is 0.95-1.15, and the Daa / Dlvot value range is 0.96-1.03. At this time, when the diameter Di of the implanted artificial heart valve corresponding to the aortic valve ring point C is not less than 1.1 times the valve ring diameter Daa, it can be ensured that there will be no circumferential leakage of blood after the valve is implanted. Since the physiological structure of the ascending aorta has a straight cylindrical shape, the inflow end of the artificial heart valve, whether it is straight cylindrical or flared, can be anchored to the valve ring and the human tissue below the valve ring. In some optional methods, when the maximum diameter Do of the valve outflow end is greater than or equal to 1.1 times Dasc-a, more stable anchoring can be achieved at the valve outflow end. Figure 5bThe outflow tract of the middle left ventricle is a first-class trapezoid, and the ascending aorta is a straight cylinder, that is, the value range of Dasc-a / Dstj is 0.95-1.15, and Daa / Dlvot is not greater than 0.96. At this time, when the diameter Di of the valve ring corresponding to point C of the artificial valve is not less than 1.1 times the valve ring diameter Daa, it can be ensured that no circumferential leakage of blood will occur after the valve is implanted. At the same time, in order to ensure that the valve has sufficient radial support force to anchor on the human tissue, the maximum diameter Do of the valve outflow end is greater than or equal to 1.1 times Dasc-a. In some optional methods, when the valve ring diameter Daa at point C is less than or equal to 28 mm and the valve ring circumference is less than or equal to 88 mm, the artificial heart valve anchoring effect is best. Figure 5c The left ventricular outflow tract is a second-class trapezoid, and the ascending aorta is a straight cylinder, that is, the value range of Dasc-a / Dstj is 0.95-1.15, and Daa / Dlvot is greater than 1.03. At this time, when the diameter Di of the valve corresponding to the valve ring point C is not less than 1.1-1.15 times the valve ring diameter Daa, it can be ensured that there will be no circumferential leakage of blood after the valve is implanted. Since the physiological structure of the left ventricular outflow tract has a second-class trapezoid, the inflow end of the artificial heart valve can be anchored to the valve ring and the human tissue below the valve ring regardless of whether it is a straight cylinder or a flared shape. In some optional methods, when the maximum diameter Do of the valve outflow end is greater than or equal to 1.1 times Dasc-a, the artificial heart valve has the best anchoring effect. Figure 5d The figure shows the implantation of an artificial valve under the anatomical structure of the left ventricular outflow tract being a first-class trapezoid and the ascending aorta being a straight cylinder.

[0082] Figure 6a When the left ventricular outflow tract is a straight cylinder and the ascending aorta is a first-class trapezoid, that is, Dasc-a / Dstj is less than 0.95, Daa / Dlvot=0.96-1.03. At this time, the outflow end of the artificial heart valve cannot be fixed by shape matching, and can only be anchored by the large radial support force of the artificial heart valve itself. Since the left ventricular outflow tract has a straight cylinder structure, when the inflow end of the artificial heart valve has a large radial force support force and no circumferential leakage of blood occurs, the stable implantation of the artificial valve can also be achieved, that is, Di must be greater than or equal to 1.1 times Daa. In an optional manner, when the maximum diameter Do of the valve outflow end is greater than or equal to 1.1 times Dstj, Di is greater than or equal to 1.1 times Daa.

[0083] Figure 6bThe middle ascending aorta and left ventricular outflow tract are both Class I trapezoidal, with Dasc-a / Dstj less than 0.95 and Daa / Dlvot less than 0.96. This human anatomy requires that the artificial heart valve be anchored simultaneously at both the inflow and outflow ends. Achieving stable anchoring at the valve outflow end requires that the maximum diameter of the prosthetic valve outflow end be no less than 1.1 times the diameter of the sinotubular junction. In this case, at least one point on the valve outflow end has a larger diameter than the sinotubular junction, ensuring that it does not shift or slip from the sinotubular junction. When these conditions are met, the anchoring of the prosthetic valve at the annulus requires that Di be no less than 1.1 times Daa. When the maximum diameter of the prosthetic valve outflow end is less than 1.1 times the diameter of the sinotubular junction, the maximum diameter of the implanted valve outflow end is similar to the diameter of the sinotubular junction. After implantation, the mutual forces at the sinotubular junction are weak, making displacement more likely.

[0084] Figure 6c The left ventricular outflow tract is a Class II trapezoid, while the ascending aorta is a Class I trapezoid. This means that Dasc-a / Dstj is less than 0.95, and Daa / Dlvot is greater than 1.03. At this point, the prosthetic heart valve inflow port and the native aortic valve structure are well aligned, and Di greater than or equal to 1.1-1.15 times Daa ensures stable anchoring of the prosthetic heart valve. Figure 6d The figure shows the implantation of an artificial valve under the anatomical structure of the left ventricular outflow tract being a straight cylinder and the ascending aorta being a first-class trapezoidal structure.

[0085] Figure 7a The left ventricular outflow tract is straight cylindrical and the ascending aorta is a second-class trapezoid, that is, Dasc-a / Dstj is greater than 1.15, and the Daa / Dlvot value range is 0.96-1.03. At this time, when the diameter Di of the artificial heart valve corresponding to the valve ring C point is not less than 1.1 times the valve ring diameter Daa, it can be guaranteed that no circumferential leakage of blood will occur after the valve is implanted. Since the physiological structure of the left ventricular outflow tract has a straight cylindrical shape, the inflow end of the artificial heart valve, whether it is straight cylindrical or flared, can be anchored to the valve ring and the human tissue below the valve ring. In some optional methods, when the maximum diameter Do of the valve outflow end is greater than or equal to 1.1 times Dasc-a, the artificial heart valve has the best anchoring effect.

[0086] Figure 7bWhen the left ventricular outflow tract is a first-class trapezoid and the ascending aorta is a second-class trapezoid, that is, Dasc-a / Dstj is greater than 1.15 and Daa / Dlvot is less than 0.96. When the diameter Di of the valve corresponding to the valve ring point C is not less than 1.1-1.15 times the diameter of the valve ring, it can be guaranteed that no circumferential blood leakage will occur after the valve is implanted. Due to the trapezoidal structure of the physiological structure of the left ventricular outflow tract, the relative force of the human tissue on the valve at this position is smaller than in other situations, among which other situations refer to the left ventricular outflow tract being a straight tube or a second-class trapezoid. In order to ensure the stable anchoring of the valve, the maximum diameter Do of the valve outflow end needs to be not less than Dasc-a at the valve outflow end.

[0087] Figure 7c When the left ventricular outflow tract is a second-class trapezoid and the ascending aorta is a second-class trapezoid, that is, Dasc-a / Dstj is greater than 1.15 and Daa / Dlvot is greater than 1.03. At this time, when the diameter Di of the valve corresponding to the valve ring point C is not less than 1.1-1.15 times the diameter Daa of the aortic valve ring, it can be ensured that there will be no circumferential leakage of blood after the valve is implanted. Since the physiological structure of the aortic valve inflow end has a second-class trapezoid, the inflow end of the artificial heart valve, whether it is a straight cylinder or a flared shape, can be anchored to the valve ring and the human tissue below the valve ring. In some optional methods, when the maximum diameter Do of the valve outflow end is greater than or equal to 1.1 times Dasc-a, the anchoring effect of the artificial heart valve is best. Figure 7d It shows the implantation of an artificial valve under the anatomical structure of the left ventricular outflow tract being a second-class trapezoid and the ascending aorta being a second-class trapezoid.

[0088] After confirming that the target artificial heart valve meets the conditions for artificial heart valve implantation, the implantation situation is simulated using a computer. Figure 8 Schematic diagram of the environment around the aortic valve after implantation of the artificial heart valve is shown in FIG.

[0089] In some embodiments of the present application, designated structural parameters of the target area are obtained, wherein the designated structural parameters include at least one of the following: aortic valve blood flow velocity, mean transvalvular pressure difference and valve orifice area of ​​the target area; the parameter value of the designated structural parameter is determined and compared with the corresponding fifth threshold; and based on the comparison result, it is determined whether to execute the step of determining the target setting parameters of the artificial heart valve.

[0090] When the aortic valve blood flow velocity and the average transvalvular pressure difference are greater than the corresponding fifth threshold and the valve orifice area is less than the corresponding fifth threshold, it can be determined that the target object belongs to aortic stenosis; when the effective regurgitant orifice area of ​​the valve is greater than the corresponding fifth threshold, it is determined that the target object belongs to aortic valve regurgitation. In the above two cases, the step of determining the target setting parameters of the artificial heart valve can be executed.

[0091] Specifically, the type of valvular disease is determined based on the acquired imaging data of the aortic valve and surrounding tissue anatomy, such as preoperative ultrasound data. If the aortic valve blood flow velocity is no less than 4 m / s, the transvalvular pressure gradient (mean transvalvular pressure gradient) is no less than 40 mmHg, and the valve orifice area is less than 1 square centimeter, combined with other clinical symptoms, the patient can be determined to have aortic valve stenosis. If the effective regurgitant orifice area of ​​the valve is greater than 0.1 square centimeter, combined with other clinical symptoms, the patient can be considered to have aortic valve regurgitation.

[0092] When it is confirmed that the aortic valve has only regurgitation or is characterized by predominantly regurgitation or stenosis, the artificial heart valve determination method provided in the embodiment of the present application is applicable.

[0093] The present application also provides a device for determining an artificial heart valve. Figure 9 As shown, it includes: an acquisition module 90, used to acquire an anatomical structure image of the target area to be implanted; an extraction module 92, used to extract structural parameters of the target area from the anatomical structure image; a first determination module 94, used to determine a target setting parameter according to a first target parameter in the structural parameters, wherein the first target parameter includes at least one of the following: aortic valve ring diameter, left ventricular outflow tract diameter, sinotubular junction diameter and ascending aorta diameter; a second determination module 96, used to determine a target artificial heart valve according to the target setting parameter.

[0094] Among them, the first determination module 94 includes: a target setting parameter extraction submodule and a structure type determination submodule; the target setting parameter extraction submodule is used to obtain a cross-sectional view of the anatomical structure of the target area; determine the structural type of the ascending aorta and the left ventricular outflow tract in the cross-sectional view based on the structural parameters; determine the target setting parameters according to the structural type of the ascending aorta and the left ventricular outflow tract in the cross-sectional view; the structure type determination submodule is used to determine that the ascending aorta is trapezoidal when the ratio of the ascending aorta diameter to the diameter at the sinusoidal junction is less than a set first threshold or greater than a set second threshold; determine that the ascending aorta is straight-cylinder-shaped when the ratio of the ascending aorta diameter to the diameter at the sinusoidal junction is between the first threshold and the second threshold; determine that the left ventricular outflow tract is trapezoidal when the ratio of the aortic valve annulus diameter to the left ventricular outflow tract diameter is less than a set third threshold or greater than a set fourth threshold; determine that the left ventricular outflow tract is trapezoidal when the ratio of the aortic valve annulus diameter to the left ventricular outflow tract diameter is between the third threshold and the fourth threshold.

[0095] The structural type determination submodule includes: a first target setting parameter determination unit and a second target setting parameter determination unit; the first target setting parameter determination unit is used to determine the target setting parameter as the diameter of the artificial heart valve at the first setting point is not less than the first setting multiple of the aortic valve ring diameter when the left ventricular outflow tract is a straight cylinder type; when the left ventricular outflow tract is a first type trapezoidal, the target setting parameter is determined according to the diameter at the first setting point and the maximum diameter at the second setting point of the artificial heart valve; when the left ventricular outflow tract is a second type trapezoidal, the target setting parameter is determined as the diameter at the first setting point is not less than the second setting multiple of the aortic valve ring diameter; the second target setting parameter determination unit is used to determine the target setting parameter as the diameter at the first setting point is not less than the first setting multiple of the aortic valve ring diameter and the maximum diameter at the second setting point of the artificial heart valve is not less than the first setting multiple of the ascending aorta when the ascending aorta is a straight cylinder type and the left ventricular outflow tract is a first type trapezoidal; When both the aorta and the left ventricular outflow tract are of the first type of trapezoidal shape, the target setting parameters are determined as follows: the size of the artificial heart valve at the first setting point is not less than the first setting multiple of the size of the aortic valve annulus and the maximum diameter of the artificial heart valve at the second setting point is not less than the first setting multiple of the diameter at the sinotubular junction; when the ascending aorta is of the second type of trapezoidal shape and the left ventricular outflow tract is of the first type of trapezoidal shape, the target setting parameters are determined as follows: the diameter at the first setting point is not less than the second setting multiple of the diameter of the aortic valve annulus and the maximum diameter of the artificial heart valve at the second setting point is not less than the diameter of the ascending aorta; the acquisition module 90 includes a lesion type determination submodule, wherein the lesion type determination submodule is used to obtain designated structural parameters of the target area, wherein the designated structural parameters include at least one of the following: valve orifice blood flow velocity, mean transvalvular pressure gradient and valve orifice area of ​​the target area; determine the parameter value of the designated structural parameter and compare it with the corresponding fifth threshold; and determine whether to execute the step of determining the target setting parameters of the artificial heart valve based on the comparison result.

[0096] The present application also provides a data display method, such as Figure 10 Shown, including:

[0097] Step S110, displaying an anatomical structure image of the target area to be implanted;

[0098] Step S112, displaying the structural parameters of the target area extracted from the anatomical structure image, and determining the target setting parameters based on the first target parameter in the structural parameters, wherein the first target parameter includes at least one of the following groups: a first parameter group and a second parameter group, the first parameter group includes: aortic valve annulus size and left ventricular outflow tract size, and the second parameter group includes: sinotubular junction size and ascending aorta size.

[0099] An embodiment of the present application further provides a non-volatile storage medium, which includes a stored program, wherein when the program is running, the device where the non-volatile storage medium is located is controlled to execute the method for determining an artificial heart valve.

[0100] The non-volatile storage medium proposed in this application determines the type of artificial heart valve to be selected by comparing its structural parameters with those of an artificial heart valve. This utilizes the high radial support force of existing valve stents to achieve anchoring during implantation, achieving the goal of anchoring the appropriate artificial heart valve in the target area. This improves the accuracy of artificial heart valve sizing, thereby resolving the technical issue of inaccurate artificial heart valve sizing. The artificial heart valve referred to in this invention includes, but is not limited to, anchoring the valve to the implant site through its own radial support force.

[0101] An embodiment of the present application further provides a computer device, including a memory and a processor; the processor is configured to run a program stored in the memory, wherein the method for determining an artificial heart valve is executed when the program is run.

[0102] The computer device provided in the embodiments of the present application determines the type of artificial heart valve to be selected by comparing its structural parameters with those of an artificial heart valve. It then utilizes the high radial support force of existing valve stents to achieve anchoring during implantation, achieving the goal of anchoring an appropriately selected artificial heart valve in a target area. This improves the accuracy of artificial heart valve sizing, thereby resolving the technical issue of inaccurate artificial heart valve sizing. The artificial heart valve referred to in the present invention includes, but is not limited to, anchoring the valve to the implant site through its own radial support force.

[0103] The serial numbers of the above embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0104] In the above embodiments of the present application, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0105] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only exemplary. For example, the division of units can be a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0106] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple units. Some or all of the units may be selected to achieve the purpose of the present embodiment according to actual needs.

[0107] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0108] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, server or network device, etc.) to execute all or part of the steps of the various embodiments of the present application. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program code.

[0109] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A method for determining an artificial heart valve, characterized in that: include: Obtaining an anatomical image of the target area to be implanted; extracting structural parameters of the target area from the anatomical structure image; determining target setting parameters of the artificial heart valve according to a first target parameter among the structural parameters, wherein the first target parameter comprises at least one of the following groups: a first parameter group and a second parameter group, the first parameter group comprising: aortic valve annulus size and left ventricular outflow tract size, the second parameter group comprising: sinotubular junction size and ascending aorta size; determining a target artificial heart valve according to the target setting parameters; Determining a target setting parameter based on a first target parameter among the structural parameters includes: obtaining a cross-sectional view of the anatomical structure of the target region; determining a structural type of the ascending aorta and the left ventricular outflow tract in the cross-sectional view based on the structural parameters, wherein the structural types include trapezoidal and straight; and determining the target setting parameter based on the structural types of the ascending aorta and the left ventricular outflow tract in the cross-sectional view; Determining the structural types of the ascending aorta and the left ventricular outflow tract in the cross-sectional view based on the structural parameters includes: determining that the ascending aorta is a trapezoid when the ratio of the size of the ascending aorta to the size of the sinotubular junction is less than a set first threshold or greater than a set second threshold; determining that the ascending aorta is a straight cylinder when the ratio of the size of the ascending aorta to the size of the sinotubular junction is between the first threshold and the second threshold; determining that the left ventricular outflow tract is a trapezoid when the ratio of the size of the aortic valve annulus to the size of the left ventricular outflow tract is less than a set third threshold or greater than a set fourth threshold; and determining that the left ventricular outflow tract is a straight cylinder when the ratio of the size of the aortic valve annulus to the size of the left ventricular outflow tract is between the third threshold and the fourth threshold. The target setting parameters are determined according to the structural types of the ascending aorta and left ventricular outflow tract in the cross-sectional view, including: when the left ventricular outflow tract is a straight cylindrical type, the target setting parameters are determined to be a first set multiple value of the size of the aortic valve ring at the first set point of the artificial heart valve; when the left ventricular outflow tract is a first type trapezoidal type, the target setting parameters are determined according to the size at the first set point and the maximum size at the second set point of the artificial heart valve; when the left ventricular outflow tract is a second type trapezoidal type, the target setting parameters are determined to be a second set multiple value of the size of the aortic valve ring at the first set point, wherein the diameter of the aortic valve ring of the first type trapezoidal type is smaller than the diameter at the left ventricular outflow tract, and the diameter of the aortic valve ring of the second type trapezoidal type is larger than the diameter at the left ventricular outflow tract.

2. The method according to claim 1, characterized in that In a case where the left ventricular outflow tract is a first type trapezoid, determining the target setting parameter according to the size at the first set point and the maximum size at the second set point of the artificial heart valve includes: When the ascending aorta is straight and the left ventricular outflow tract is a first-class trapezoid, the target setting parameters are determined as follows: the size at the first setting point is not less than a first setting multiple of the aortic valve annulus size, and the maximum size at the second setting point of the artificial heart valve is not less than the first setting multiple of the ascending aorta size. When both the ascending aorta and the left ventricular outflow tract are first-class trapezoidal, determining the target setting parameters as follows: a dimension of the artificial heart valve at a first setting point is not less than a first setting multiple of the aortic valve annulus dimension, and a maximum dimension of the artificial heart valve at a second setting point is not less than a first setting multiple of the sinotubular junction dimension; When the ascending aorta is a second-class trapezoid and the left ventricular outflow tract is a first-class trapezoid, the target setting parameters are determined to be that the size at the first setting point is not less than a second setting multiple of the aortic valve annulus size and the maximum size of the artificial heart valve at the second setting point is not less than the ascending aorta size.

3. The method according to claim 1, characterized in that Before determining the target setting parameters of the artificial heart valve according to the first target parameter among the structural parameters, the method further includes: Acquiring designated structural parameters of the target region, wherein the designated structural parameters include at least one of the following: aortic valve blood flow velocity, mean transvalvular pressure gradient, and valve orifice area of ​​the target region; Determine the parameter value of the designated structural parameter and compare it with the corresponding fifth threshold; and determine whether to execute the step of determining the target setting parameter of the artificial heart valve based on the comparison result.

4. The method according to claim 1, wherein The first set point is 3-6 mm above the outer edge of the inflow end of the artificial heart valve.

5. The method according to claim 1, characterized in that The second set point is the point corresponding to the maximum diameter of the outflow end of the artificial heart valve.

6. The method according to claim 1, characterized in that The first setting multiple value is 1.

1.

7. The method according to claim 1, characterized in that The second setting multiple value is any value between 1.1-1.

15.

8. The method according to claim 1, characterized in that When the Daa / Dlvot value is less than 0.96, the left ventricular outflow tract structure is the first type of trapezoid, Daa is the aortic valve annulus diameter, and Dlvot is the left ventricular outflow tract diameter.

9. The method according to claim 1, characterized in that When the Daa / Dlvot value is greater than 1.03, the left ventricular outflow tract structure is the second type of trapezoid, Daa is the aortic valve annulus diameter, and Dlvot is the left ventricular outflow tract diameter.

10. A device for determining an artificial heart valve, characterized in that: include: an acquisition module, for acquiring an anatomical structure image of a target area to be implanted; an extraction module, configured to extract structural parameters of a target area from the anatomical structure image; a first determining module, configured to determine a target setting parameter of the artificial heart valve according to a first target parameter among the structural parameters, wherein the first target parameter comprises at least one of the following groups: a first parameter group and a second parameter group, the first parameter group comprising: an aortic annulus size and a left ventricular outflow tract size, and the second parameter group comprising: a sinotubular junction size and an ascending aorta size; a second determining module, configured to determine a target artificial heart valve according to the target setting parameters; Determining a target setting parameter based on a first target parameter among the structural parameters includes: obtaining a cross-sectional view of the anatomical structure of the target region; determining a structural type of the ascending aorta and the left ventricular outflow tract in the cross-sectional view based on the structural parameters, wherein the structural types include trapezoidal and straight; and determining the target setting parameter based on the structural types of the ascending aorta and the left ventricular outflow tract in the cross-sectional view; Determining the structural types of the ascending aorta and the left ventricular outflow tract in the cross-sectional view based on the structural parameters includes: determining that the ascending aorta is a trapezoid when the ratio of the size of the ascending aorta to the size of the sinotubular junction is less than a set first threshold or greater than a set second threshold; determining that the ascending aorta is a straight cylinder when the ratio of the size of the ascending aorta to the size of the sinotubular junction is between the first threshold and the second threshold; determining that the left ventricular outflow tract is a trapezoid when the ratio of the size of the aortic valve annulus to the size of the left ventricular outflow tract is less than a set third threshold or greater than a set fourth threshold; and determining that the left ventricular outflow tract is a straight cylinder when the ratio of the size of the aortic valve annulus to the size of the left ventricular outflow tract is between the third threshold and the fourth threshold. The target setting parameters are determined according to the structural types of the ascending aorta and left ventricular outflow tract in the cross-sectional view, including: when the left ventricular outflow tract is a straight cylindrical type, the target setting parameters are determined to be a first set multiple value of the size of the aortic valve ring at the first set point of the artificial heart valve; when the left ventricular outflow tract is a first type trapezoidal type, the target setting parameters are determined according to the size at the first set point and the maximum size at the second set point of the artificial heart valve; when the left ventricular outflow tract is a second type trapezoidal type, the target setting parameters are determined to be a second set multiple value of the size of the aortic valve ring at the first set point, wherein the diameter of the aortic valve ring of the first type trapezoidal type is smaller than the diameter at the left ventricular outflow tract, and the diameter of the aortic valve ring of the second type trapezoidal type is larger than the diameter at the left ventricular outflow tract.

11. A non-volatile storage medium, characterized in that: The non-volatile storage medium includes a stored program, wherein when the program is run, the device where the non-volatile storage medium is located is controlled to execute the method for determining an artificial heart valve according to any one of claims 1 to 9.

12. A computer device, characterized in that: It comprises a memory and a processor; the processor is used to run a program, wherein when the program is run, the method for determining an artificial heart valve according to any one of claims 1 to 9 is executed.

Images