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51 results about "Coronary blood vessel" patented technology

A: The coronary blood vessels include both arteries and veins, according to the Cleveland Clinic. As stated by Stanford Hospital, coronary arteries supply oxygen-rich blood to the muscle of the heart. The Cleveland Clinic states that coronary veins return deoxygenated blood to the right atrium of the heart.

Cardiac and or respiratory gated image acquisition system and method for virtual anatomy enriched real time 2d imaging in interventional radiofrequency ablation or pace maker replacement procecure

The present invention refers to the field of cardiac electrophysiology (EP) and, more specifically, to image-guided radio frequency ablation and pacemaker placement procedures. For those procedures, it is proposed to display the overlaid 2D navigation motions of an interventional tool intraoperatively obtained from the same projection angle for tracking navigation motions of an interventional tool during an image-guided intervention procedure while being navigated through a patient's bifurcated coronary vessel or cardiac chambers anatomy in order to guide e.g. a cardiovascular catheter to a target structure or lesion in a cardiac vessel segment of the patient's coronary venous tree or to a region of interest within the myocard. In such a way, a dynamically enriched 2D reconstruction of the patient's anatomy is obtained while moving the interventional instrument. By applying a cardiac and / or respiratory gating technique, it can be provided that the 2D live images are acquired during the same phases of the patient's cardiac and / or respiratory cycles. Compared to prior-art solutions which are based on a registration and fusion of image data independently acquired by two distinct imaging modalities, the accuracy of the two-dimensionally reconstructed anatomy is significantly enhanced.
Owner:KONINKLIJKE PHILIPS ELECTRONICS NV

Chinese medicinal composition for treating broiler abdominal dropsy and preparation method thereof

The invention relates to a Chinese medicinal composition for treating broiler abdominal dropsy and a preparation method thereof. The Chinese medicinal composition is characterized by consisting of the following medicaments in part by weight: 48 to 52 parts of root of red-rooted salvia, 28 to 32 parts of szechuan lovage rhizome and 18 to 22 parts of tuckahoe. The preparation method comprises the following steps of: weighing the root of red-rooted salvia, the szechuan lovage rhizome and the tuckahoe serving as raw materials according to the weight ratio; crushing and screening to ensure that the particle diameter is between 60 and 200 meshes; and sub-packaging to obtain the finished product. The Chinese medicinal composition has the advantages that: the szechuan lovage rhizome and the root of red-rooted salvia in the prescription are common medicaments for activating blood circulation to dissipate blood stasis according to etiology and pathogenesis of the broiler abdominal dropsy; the modern pharmacological researches show that the szechuan lovage rhizome can relax lung blood vessels and reduce pulmonary artery pressure; and the root of red-rooted salvia and the szechuan lovage rhizome can also expand coronary vessels and increase blood supply of heart so as to obviously improve the function of the heart. By the method, the occurrence rate of the broiler abdominal dropsy can be greatly reduced in outdoor expansion tests under natural conditions.
Owner:TIANJIN SHENGJI GRP CO LTD

Dual-mode coronary vessel image three-dimensional fusion method and fusion system

The invention discloses a dual-mode coronary blood vessel image three-dimensional fusion method and fusion system, and the method comprises the steps: obtaining a blood vessel image in an OCT mode, a blood vessel image in an IVUS mode, and a CAG image of a blood vessel through a blood vessel catheter; extracting a blood vessel three-dimensional skeleton in the CAG image according to the CAG image, and fitting according to the blood vessel three-dimensional skeleton to obtain a blood vessel center line; taking the center line of the blood vessel as a catheter withdrawing path, and respectively mapping the blood vessel image in the OCT mode and the blood vessel image in the IVUS mode to corresponding positions of the catheter withdrawing path of the blood vessel to complete image mapping; performing three-dimensional fusion of an OCT mode and an IVUS mode on the mapped image; the advantages of the three-dimensional CAG image in space, the strong tissue penetrating power of the IVUS and the high resolution of the OCT are fully exerted, more comprehensive information of the blood vessel wall and the coronary atherosclerotic plaque can be obtained, and therefore a more effective basis is provided for computer-assisted diagnosis and treatment of the coronary heart disease, evaluation of the interventional therapy effect and the like.
Owner:天津恒宇医疗科技有限公司

Method for correcting coronary blood vessel models on basis of implicit modeling technologies

InactiveCN108969097AConvenient and fast virtual correctionEasy and fast geometry editingComputer-aided planning/modellingMedicineInsertion stent
The invention discloses a method for correcting coronary blood vessel models on the basis of implicit modeling technologies. Virtual stenting includes 1), inputted reconstructed coronary blood vesselmodels; 2), allowing a user to select two end points of a lesion blood vessel section required to be corrected, and acquiring the central axis of the lesion blood vessel section; 3), building tubularmodels according to section information of the central axis, a front end and a rear end; 4), blending the built tubular models F<S> and the original blood vessel models F<O> in a piecewise smooth manner by blending operators. The tubular models built at the step 3) represent virtual stents. Virtual bypass grafting includes 1), inputting the reconstructed coronary blood vessel models; 2), allowingthe user to select two connection points of the lesion blood vessel section required to be subjected to bypass grafting and certain control points so as to determine a central axis path for guiding bypass grafting tubular structures; 3), determining the sizes of the cross sections of the tubular structures and building tubular models according to the central axes of the tubular structures; 4), blending the built tubular models F and the original blood vessel models F<O> in a piecewise smooth manner by smooth piecewise polynomial blending operators. The tubular models built at the step 3) represent virtual bypass grafting.
Owner:XIAMEN UNIV

Computer-aided surgery design system for coronary heart disease

The invention discloses a computer-aided surgery design system for coronary heart disease. The computer-aided surgery design system comprises a clinical examination module, a computer-aided module anda diagnosis and treatment module, which are sequentially connected, wherein the clinical examination module consists of a conventional inspection module 1 and a coronary angiography module 2 and is used for preliminarily judging whether the coronary heart disease or related heart diseases exist or not; the computer-aided module comprises a coronary vessel segmentation and reconstruction module 3and a vascular stenosis calculation module 4 and is used for performing segmentation and reconstruction on an angiography image and calculating coronary artery blood flow reserve fraction by applyinga computational fluid mechanics technology to quantitatively judge whether coronary artery interventional surgery treatment needs to be performed or not; and the diagnosis and treatment module consists of a doctor reexamination module 5 and an auxiliary surgery module 6, and the doctor reexamination module 5 feeds back a calculation result to enable the calculation result to be more credible. Thecomputer-aided surgery design system for the coronary heart disease can visually display a coronary artery anatomical structure and enable diagnosis of the coronary heart disease to be more visual andscientific.
Owner:JIANGSU UNIV

Coronary artery endovascular stent detection method and system based on OCT (Optical Coherence Tomography) image

The invention discloses a coronary artery intravascular stent detection method and system based on an OCT image, and the method comprises the steps: obtaining an original OCT coronary artery image, and placing the image in a polar coordinate environment; the original OCT coronary blood vessel image is preprocessed, and preprocessing comprises the steps that the position of a catheter in the OCT coronary blood vessel image is detected, and a catheter area is removed; acquiring an image sequence formed in a guide wire withdrawing process, and forming three-dimensional reconstruction body data in a Cartesian coordinate environment; performing filtering enhancement on the preprocessed coronary blood vessel image by using multi-scale Frangi, and enhancing a stent shadow structure in the image; detecting the shadow position of the bracket for the enhanced image, and determining the position of the bracket; and detecting the position of the guide wire and the detected position of the stent by using the three-dimensional reconstruction volume data, segmenting a guide wire region, and removing the guide wire. According to the method, after multi-scale Frangi filtering enhancement is utilized, bracket shadow position detection and guide wire removal are carried out, the noise influence is reduced, and a high-fidelity image is obtained.
Owner:HORIMED TECH CO LTD

Self-made membrane-contained stent auxiliary device

InactiveCN111388153AIncrease success rateImprove securityStentsBlood vesselsBlood vesselArteriovenous fistulization
The present invention relates to medical devices and particularly to a self-made membrane-contained stent auxiliary device. The self-made membrane-contained stent auxiliary device comprises a thin membrane fixing bearing base seat, a thin-membrane fixing panel is arranged in a middle part of the thin membrane fixing bearing base seat, a supporting clamp tool is arranged at each of a left end and aright end of the thin membrane fixing bearing base seat, each supporting clamp tool is provided with a stent fixing auxiliary rolling device, a stent is arranged between the left stent fixing auxiliary rolling device and the right stent fixing auxiliary rolling device, positioned at an upper end of the thin-membrane fixing panel and fixed by the stent fixing auxiliary rolling devices at two ends,and the stent and the stent fixing auxiliary rolling devices are connected on a central shaft in series; and the stent fixing auxiliary rolling devices are connected with the supporting clamp tools in a bearing type, and the stent fixing auxiliary rolling devices can rotate. The self-made membrane-contained stent auxiliary device improves a success rate of a self-made membrane-contained stent, isused for treating other arteries except coronary arteries, vein vessel perforation, arteriovenous fistula and aneurysm, increases timeliness of a rescue treatment, and improves a success rate of rescue of perforation and rupture of coronary blood vessels in coronary intervention operations.
Owner:王海龙
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