A dual-anchored multi-plane measurement method and application for preoperative CT evaluation

Abstract

The present invention relates to the technical field of medical devices, and particularly relates to a dual-anchoring multi-plane measurement method and application for preoperative CT evaluation. A dual-anchoring multi-plane measurement method for preoperative CT evaluation in the present application includes the following steps: measuring the leaflet information of the main anchoring area on the valve; drawing the morphology of the valve frame after deployment in each layer according to the leaflet information; measuring the information of the secondary anchoring area on the valve; selecting the type and model of the valve according to the information of the main anchoring area of the valve, the morphology of the deployed valve frame, and the information of the secondary anchoring area of the valve, and predicting the release information of the valve, so as to realize the optimized treatment of transcatheter aortic valve replacement for aortic diseases. The present invention more clearly defines the aortic root anatomy, which helps to optimize the selection of valve types and models, predict the initial position of valve release, discover the main anchoring area of the valve and the secondary anchoring area of the ascending aorta, and further optimize the TAVR surgical strategy to improve the surgical success rate.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a dual-anchoring multi-plane measurement method and application for preoperative CT evaluation. Background Art

[0002] Currently, transcatheter aortic valve replacement (TAVR) has been widely used in patients with severe aortic valve stenosis and has become an equally important method as surgical open-chest valve replacement. Moreover, the TAVR technique is more minimally invasive and patients recover faster.

[0003] However, the use of TAVR for patients with aortic valve regurgitation is not yet mature. The main reason is that patients with aortic valve regurgitation have unique characteristics, such as mild or no leaflet calcification, ascending aorta dilation, etc.

[0004] Therefore, it is necessary to design an optimized measurement method for preoperative CT so that doctors can fully understand the aortic root anatomical information of patients with aortic valve regurgitation before surgery. This information includes the annulus, left ventricular outflow tract, ascending aorta, degree of leaflet calcification, leaflet fusion, leaflet height and thickness, etc., thereby helping surgeons select the valve size before surgery and further optimizing the problem of treating AR patients with TAVR. Summary of the Invention

[0005] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art, and to provide a dual-anchoring multi-plane measurement method and application for preoperative CT evaluation.

[0006] To achieve the above purpose, the technical scheme adopted by the present invention is as follows: A dual-anchoring multi-plane measurement method for preoperative CT evaluation, including the following steps:

[0007] S1. Measure the leaflet information of the main anchoring area on the valve, and draw the morphology of the valve frame expansion after implantation of the valve frame in each layer according to the leaflet information;

[0008] S2. Measure the information of the secondary anchoring area on the valve;

[0009] S3. Select the valve type and model according to the information of the main anchoring area of the valve, the morphology of the implanted valve frame expansion, and the information of the secondary anchoring area of the valve, and estimate the release information of the valve.

[0010] Further, before measuring the leaflet information of the main anchoring area on the valve, measure the basic meridian.

[0011] Further, the leaflet information includes one or more of leaflet type, leaflet thickness, leaflet calcification distribution and severity, fusion ridge between leaflets, and position of leaflet junction area.

[0012] Further, the main anchoring area is the 2mm, 4mm, 6mm, 8mm, 10mm layers of the annulus.

[0013] Further, the secondary anchoring regions are at the 30mm, 35mm, 40mm, 45mm, and 50mm levels of the annulus.

[0014] Further, the information of the secondary anchoring regions is the perimeter and corresponding diameter at 30mm, 35mm, 40mm, 45mm, and 50mm of the annulus.

[0015] Further, the valve release information includes one or more of the initial position, stability, and feasibility of valve release.

[0016] Further, the shape of the stent frame expansion is a perfect circle.

[0017] An application of a dual-anchoring multi-plane measurement method for preoperative CT evaluation, applying the above-mentioned dual-anchoring multi-plane measurement method for preoperative CT evaluation to treat AR patients in TAVR.

[0018] Advantages of the present invention: As can be seen from the above description of the present invention, compared with the prior art, a dual-anchoring multi-plane measurement method for preoperative CT evaluation of the present invention includes the following methods: measuring the leaflet information of the main anchoring regions on the valve; drawing the shape of the stent frame expansion after implantation of the stent frame at each level according to the leaflet information; measuring the information of the secondary anchoring regions on the valve; selecting the valve type and model according to the information of the main anchoring regions of the valve, the shape of the implanted stent frame expansion, and the information of the secondary anchoring regions of the valve, and predicting the valve release information, so as to realize the optimized treatment of transcatheter aortic valve replacement for aortic diseases. The present invention more clearly defines the aortic root anatomy, thereby helping to optimize the selection of valve type and model, predicting the initial position of valve release, discovering the main anchoring regions of the valve and the secondary anchoring regions of the ascending aorta, and further optimizing the TAVR surgical strategy, improving the surgical success rate, and having very practical clinical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a flowchart of a dual-anchoring multi-plane measurement method for preoperative CT evaluation in a preferred embodiment of the present invention;

[0020] Figure 2 It is a schematic diagram of the measurement structure of the main anchoring region in a preferred embodiment of the present invention;

[0021] Figure 3 It is a schematic diagram of the measurement structure of the main anchoring region and the secondary anchoring region in a preferred embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0023] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Refer to Figures 1-3 As shown, a preferred embodiment of the present invention is a double-anchoring multi-plane measurement method for preoperative CT evaluation, including the following steps:

[0025] S1. Measure the leaflet information of the main anchoring area on the valve, and draw the morphology of the valve frame expansion after the valve frame is implanted in each layer according to the leaflet information.

[0026] The main anchoring area is the layer at 2 mm, 4 mm, 6 mm, 8 mm, and 10 mm of the valve annulus. In each layer, according to the characteristics of the leaflet type, leaflet thickness, leaflet calcification distribution and severity, leaflet fusion ridge, and leaflet junction area position, etc., draw the maximum morphology of the valve frame expansion after the valve frame is implanted in each layer. Most of this morphology is a perfect circle; then measure the circumference of this perfect circle and its corresponding diameter.

[0027] S2. Measure the information of the secondary anchoring area on the valve.

[0028] That is, measure the circumference and the corresponding diameter of the layers at 30 mm, 35 mm, 40 mm, 45 mm, and 50 mm of the valve annulus in the secondary anchoring area, and find the secondary anchoring area of the ascending aorta in AR patients.

[0029] S3. Select the valve type and model according to the information of the main anchoring area of the valve, the morphology of the implanted valve frame expansion, and the information of the secondary anchoring area of the valve, and estimate the valve release information.

[0030] The valve release information includes the initial position, stability, feasibility, etc. of the valve release, so as to realize the optimized treatment of transcatheter aortic valve replacement for aortic diseases.

[0031] As a preferred embodiment of the present invention, it may also have the following additional technical features: Before measuring the leaflet information of the main anchoring area on the valve, measure the basic meridian line, that is, perform basic measurement, which is convenient for subsequent division of the main anchoring area and the secondary anchoring area, so as to be conducive to evaluating the feasibility of valve implantation and the valve model.

[0032] An application of a double-anchoring multi-plane measurement method for preoperative CT evaluation is to apply the above double-anchoring multi-plane measurement method for preoperative CT evaluation to the treatment of AR patients in TAVR.

[0033] The present invention more specifically and clearly defines the aortic root anatomy, thereby helping to optimize the selection of valve types and models, predicting the initial position of valve release, finding the main anchoring area of the valve and the secondary anchoring area of the ascending aorta, further optimizing the TAVR surgical strategy, improving the surgical success rate, and having very practical clinical value.

[0034] On the premise of no conflict, those skilled in the art can freely combine and superimpose the above additional technical features.

[0035] It can be understood that the present invention is described by some embodiments. Those skilled in the art know that without departing from the spirit and scope of the present invention, various changes or equivalent substitutions can be made to these features and embodiments. Additionally, under the teaching of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.

Claims

1. A dual-anchored multi-plane measurement method for preoperative CT evaluation, characterized in that including the following methods: S1. Measure the leaflet information of the main anchoring areas on the valve, and draw the shape of the stent expansion after stent implantation at each level according to the leaflet information; S2. Measure the information of the secondary anchoring areas on the valve; S3. Select the type and model of the valve according to the information of the main anchoring areas of the valve, the shape of the stent expansion after implantation, and the information of the secondary anchoring areas of the valve, and estimate the release information of the valve; Measure the basic meridian before measuring the leaflet information of the main anchoring areas on the valve; The leaflet information includes one or more of leaflet type, leaflet thickness, leaflet calcification distribution and severity, leaflet fusion ridge, and leaflet junction area position; The main anchoring areas are the 2mm, 4mm, 6mm, 8mm, and 10mm levels of the valve annulus; The secondary anchoring areas are the 30mm, 35mm, 40mm, 45mm, and 50mm levels of the valve annulus; The information of the secondary anchoring areas is the perimeter and corresponding diameter at 30mm, 35mm, 40mm, 45mm, and 50mm of the valve annulus; The release information of the valve includes one or more of the initial position, stability, and feasibility of valve release; 2. The dual-anchoring multi-plane measurement method for preoperative CT evaluation according to claim 1, wherein: The shape of the stent expansion is a perfect circle.

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