Patents by Inventor Jianping Xiang

Jianping Xiang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 12364451
    Abstract: A stenosis assessment method and device based on the intracranial digital subtraction angiographic (DSA) imaging, including acquiring the intracranial DSA imaging and extracting two planar images containing the target blood vessel from the DSA imaging, wherein the two planar images have different shooting angles. According to the two planar images, a 3D model of the target vessel is established. Based on the established 3D model of the target vessel and the DSA imaging, the hemodynamic simulation of the target vessel is performed. The disclosure realizes the functional assessment of intracranial vascular stenosis, improves the diagnostic accuracy, and provides certain assistance for neurologists to determine intervention means. The disclosure of noninvasive FFR technology in the assessment of intracranial vascular stenosis can only rely on angiography for functional assessment, saving the medical examination cost of patients. It has more convenient operation and higher repeatability.
    Type: Grant
    Filed: October 28, 2022
    Date of Patent: July 22, 2025
    Assignee: Hangzhou ArteryFlow Technology Co., Ltd.
    Inventors: Jingsong He, Yiqin Cao, Li Feng, Xiaochang Leng, Jianping Xiang
  • Patent number: 12257094
    Abstract: The application discloses a method, a device, a system and a computer storage medium for obtaining the CT perfusion imaging parameter maps of brain. The method includes: obtaining CT perfusion images, pre-processing the CT perfusion images, and obtaining discrete contrast agent concentration curve C(n) of each pixel point in the brain tissue; reading the acquisition time information of the CT perfusion images to obtain the acquisition time array T(n); intercepting the acquisition time array T(n) to obtain the relative acquisition time array t(n); combining the discrete contrast agent concentration curve C(n) with the corresponding relative acquisition time array t(n) to obtain the discrete time-concentration curve C(tn) of each pixel point in the brain tissue; after fitting or interpolating the discrete time-concentration curve C(tn), re-discretizing at the same time interval, and obtaining the discrete time-concentration curve C(n)? of each pixel point in brain tissue.
    Type: Grant
    Filed: August 19, 2022
    Date of Patent: March 25, 2025
    Assignee: ArteryFlow Technology Co., Ltd.
    Inventors: Xin Liu, Jingsong He, Wenfei Shi, Xiaochang Leng, Jianping Xiang
  • Publication number: 20240366409
    Abstract: This application relates to a sizing method and computer equipment for braided stents. The sizing method includes: obtaining geometric models of aneurysm and parent artery, determining the expected landing zone of the braided stent, obtaining the centerline and cross-section of the blood vessel at the expected landing zone; obtaining the proposed diameter of the braided stent, thereby obtaining the first braided stent that meets the expectations, obtaining the anchoring section length of the first braided stent, obtaining the working zone length; discretizing the working zone into a finite number of discrete segments, obtaining the corresponding relationship between the length and diameter of the discrete segments, obtaining the diameter of the discrete segments, obtaining the length of the discrete segments based on the corresponding relationship and accumulating them until the total length equates the working zone length, obtaining the number of discrete segments.
    Type: Application
    Filed: April 30, 2024
    Publication date: November 7, 2024
    Inventors: Jianping XIANG, Yejie SHAN
  • Publication number: 20230307144
    Abstract: This application discloses a method, a computer device, a storage medium, and a program product for obtaining the Index of Microvascular Resistance (IMR). The method comprises the following steps: obtaining the resting pressure of the coronary artery ostium, and calculating the cardiac output pressure based on the resting pressure of the coronary artery ostium. Obtaining the hyperemic pressure of the coronary artery ostium, and obtaining the coronary flow reserve based on the cardiac output pressure, the resting pressure, and the hyperemic pressure. Obtaining the medical images of the coronary system, obtaining the three-dimensional model of the target vessel, and calculating the morphological parameters of the coronary artery based on the three-dimensional model of the target vessel. Calculating the resting blood flow and the flow resistance based on the morphological parameters.
    Type: Application
    Filed: March 23, 2023
    Publication date: September 28, 2023
    Inventors: Jingsong HE, Xiaochang LENG, Jianping XIANG
  • Publication number: 20230210600
    Abstract: This application relates to an improved method for generating microcatheter paths, a method for shaping a mandrel, a computer device, a readable storage medium, and a program product. The method for generating the microcatheter path includes obtaining a cerebral vascular model, generating a centerline, determining the proximal starting point of the centerline, and successively generating a plurality of unit segments from the proximal starting point towards the distal aneurysm. Each unit segment includes a series of connected straight segments and curved segments, and the unit segments are successively connected to form at least a part of the microcatheter path.
    Type: Application
    Filed: December 29, 2022
    Publication date: July 6, 2023
    Inventors: Yejie SHAN, Xiaochang LENG, Jianping XIANG
  • Publication number: 20230139405
    Abstract: A stenosis assessment method and device based on the intracranial digital subtraction angiographic (DSA) imaging, including acquiring the intracranial DSA imaging and extracting two planar images containing the target blood vessel from the DSA imaging, wherein the two planar images have different shooting angles. According to the two planar images, a 3D model of the target vessel is established. Based on the established 3D model of the target vessel and the DSA imaging, the hemodynamic simulation of the target vessel is performed. The disclosure realizes the functional assessment of intracranial vascular stenosis, improves the diagnostic accuracy, and provides certain assistance for neurologists to determine intervention means. The disclosure of noninvasive FFR technology in the assessment of intracranial vascular stenosis can only rely on angiography for functional assessment, saving the medical examination cost of patients. It has more convenient operation and higher repeatability.
    Type: Application
    Filed: October 28, 2022
    Publication date: May 4, 2023
    Inventors: Jingsong HE, Yiqin CAO, Li FENG, Xiaochang LENG, Jianping XIANG
  • Publication number: 20230054153
    Abstract: The disclosure discloses a method, a device, a system and a computer storage medium for obtaining the CT perfusion imaging parameter maps of brain. The method includes: obtaining CT perfusion images, pre-processing the CT perfusion images, and obtaining discrete contrast agent concentration curves C(n) of each pixel point in the brain tissue; reading the acquisition time information of the CT perfusion images to obtain the acquisition time arrays T(n); intercepting the acquisition time arrays T(n) to obtain the relative acquisition time arrays t(n); combining the discrete contrast agent concentration curves C(n) with the corresponding relative acquisition time arrays t(n) to obtain the discrete time-concentration curves C(tn) of each pixel point in the brain tissue; after fitting or interpolating the discrete time-concentration curves C(tn), re-discretizing at the same time interval, and obtaining the discrete time-concentration curves C(n)? of each pixel point in brain tissue.
    Type: Application
    Filed: August 19, 2022
    Publication date: February 23, 2023
    Inventors: Xin LIU, Jingsong HE, Wenfei SHI, Xiaochang LENG, Jianping XIANG
  • Publication number: 20210378692
    Abstract: An intracranial thrombus removal apparatus includes a fretwork-type tube-shaped structure, and having a radially compressed loading state and a radially expanded released state. One end of the tube-shaped structure in an axial direction configured for connecting to a delivery is defined as a proximal end, and the other end in the axial direction closed by a mesh cover structure is defined as a distal end a mesh cover structure. The tube-shaped structure comprises a plurality of capturing claws, one end of each capturing claw is defined as a root part connected to a side wall of the tube-shaped structure, and the other end of each of the plurality of capturing claws is defined as a tip extending to an axis position of the tube-shaped structure, and each of the plurality of capturing claws inclines from the proximal end to the distal end while extending.
    Type: Application
    Filed: October 22, 2019
    Publication date: December 9, 2021
    Inventors: Jianping XIANG, Qimeng ZHOU, Lingke ZHU, Hongjuan JING
  • Publication number: 20160203288
    Abstract: Systems and methods for identifying historical vasculature cases are disclosed. A method may use a case database and a processor. One such method comprises the step of retrieving an image of the vasculature, demographic factors, morphological factors, and hemodynamic factors of the individual. The image is segmented and a geometry is calculated using the processor. Fluid flow may be simulated based on the hemodynamic factors and the calculated geometry. Calculations and factors are stored in the case database and relevant cases are identified based on the calculated geometry of the vasculature, the simulated fluid flow, and the demographic factors in comparison to the cases in the case database.
    Type: Application
    Filed: June 18, 2013
    Publication date: July 14, 2016
    Inventors: Hui Meng, Luca Antiga, Jianping Xiang