25 results about "False lumen" patented technology

The invention discloses an image recognition and enhanced CT image generation method based on a plain-scan CT image. The method comprises the following steps: acquiring an NCE-CT image and CE-CT image pairing data set; calculating hemodynamic parameters of the aortic true cavity by using CFD, and obtaining physical prior features through feature selection; constructing and training a PIAD deep learning model; the PIAD deep learning model comprises an encoder guided by physical prior features through a cross attention mechanism, a Transform global information extraction module, and three functional heads for respectively outputting a classification result, a CE-CT image and a segmentation mask; training a PIAD deep learning model; and applying the trained PIAD deep learning model to a reasoning stage of only inputting an NCE-CT image, and synchronously obtaining a corresponding CE-CT image, a true cavity and false cavity segmentation result and an aortic dissection recognition result. According to the method, physical prior information is integrated, and a real cavity and false cavity segmentation task and a CE-CT generation task are combined, so that complementary information of NCE-CT and CE-CT is effectively utilized, and dependence on expensive and complex CE-CT equipment is reduced.

An embodiment includes a system comprising: a backbone; a first polyurethane shape memory polymer (SMP) foam on the backbone; a second polyurethane SMP foam on the backbone; a third polyurethane SMP foam on the backbone and between the first and second SMP foams. Other embodiments are described herein.

The application discloses a kind of false cavity plugging device, assembly and system, belong to medical instrument technical field, wherein false cavity plugging device includes elastic membrane and elastic support, elastic support includes warp beam and weft beam, warp beam is continuously bent wave shape, warp beam is equipped with weft beam, and weft beam can be bent into annular ring.Assembly includes release device and false cavity plugging device.System includes conveying device and false cavity plugging assembly, and conveying device includes sheath and guide wire, and sheath is equipped with guide wire passage and conveying passage.Weft beam bends into annular ring can make elastic membrane roll up, reduce the size in width direction, to be contained in sheath, after being separated from sheath, weft beam will be re-opened and contacted with the inner wall of artery dissection, and can be implanted, in the whole process of being received and being separated from sheath, elastic membrane does not have length direction change, and preset release position and actual release position can be kept consistent, reduce the operation requirement to operator, and it is beneficial to popularization and use.

The application relates to a closure stent and a closure system, the closure stent comprising a covered stent and a one-way valve component, the one-way valve component being arranged in a hollow cavity or / and an extension cavity of the covered stent, the one-way valve component comprising a connecting section and a free section connected with each other, and the one end of the connecting section away from the free section being connected to the covered stent in a circumferential direction, the closure stent comprising a developing element, the distal end of the connecting section being in a strip shape, the strip shape comprising a long axis and a short axis, and the axial section defined by the two ends of the long axis being a first section; the developing element comprising a first developing element and a second developing element, and the connecting line of the developing points of the first developing element and the second developing element being substantially parallel to the diameter in the radial section of the covered stent. The closure stent provided by the application has a better closure effect, prevents blood backflow, and avoids continuous expansion and even rupture of a false lumen.

The application provides an aortic dissection rupture sealing device, which comprises a body having a hollow flow channel extending along the axial direction of the body, the hollow flow channel penetrating the rupture for conducting the true lumen of the aorta and the branch blood vessel, and the body being used for connecting a stent located in the branch blood vessel; and an anchoring part arranged on the body and surrounding the hollow flow channel, and anchored to the surrounding intima at the rupture, so as to prevent the fluid from conducting between the true lumen and the false lumen formed at the rupture. By using the above scheme, the rupture sealing effect can be improved, the continuous expansion of the false lumen caused by the incomplete rupture sealing and the residual liquid leakage can be avoided, and the blood supply stability of the branch blood vessel can be ensured, so that the blood supply demand of the internal organs, the spinal cord and the like supplied by the branch blood vessel can be met.

The application provides an aortic dissection rupture sealing device, which comprises an anchoring part, a hollow flow channel, and an intima around the rupture, so as to prevent the fluid communication between the true lumen of the aorta and the false lumen formed at the rupture; a stent, which is adjustably coupled to the anchoring part, has a connecting end and a free end, and at least the free end of the stent is located in a branch blood vessel; and the stent has a hollow structure in communication with the hollow flow channel and is supported in the branch blood vessel to communicate the true lumen and the branch blood vessel. The above scheme can avoid the continuous expansion of the false lumen caused by the incomplete sealing of the rupture and residual shunt, and at the same time, the blood supply of the blood vessel channel is retained to ensure the stability of the blood supply of the branch blood vessel, which is beneficial to meet the blood supply demand of the internal organs, spinal cord and the like supplied by the branch blood vessel.

The utility model discloses a cutting balloon, it includes: push rod, balloon head and inflation pipeline, the balloon head fixed setting in push rod one end, push rod is used for adjusting the balloon head reaches corresponding position, the balloon head sets up blade, inflation pipeline with balloon head intercommunication, through inflation pipeline to balloon head inflation, the balloon head inflation will the blade push out, to execute cutting action. The cutting balloon of the utility model can solve the problem that the middle occlusion section is located in the subintimal false lumen.

Devices and methods to treat a diseased portion of an aorta. A method of implanting an endoprosthesis within the aorta may include positioning the endoprosthesis within the aorta in a collapsed state with a constraint and deploying the endoprosthesis to the deployed diameter. The aorta has a true lumen and a false lumen due to the aorta having a defect, the true lumen defining a true lumen diameter and the false lumen formed by a false lumen wall defining a false lumen diameter. The deployed diameter of the endoprosthesis is such that the endoprosthesis extends along the true lumen and along at least a portion of the false lumen at a position where the defect is located in the aorta such that the endoprosthesis defines a flow bypass through a diseased portion of the aorta.

This invention provides an information processing device, an information processing method, and an information processing program that can support the diagnosis of arterial dissection. [Solution] The information processing device 10 includes a processor, which acquires an input image including blood vessels, generates path information indicating the blood flow path based on the input image, identifies at least the starting position of the arterial dissection based on the path information, and determines the true lumen and false lumen of the arterial dissection based on the path information within a range set according to the starting position.

This invention provides a method, electronic device, and storage medium for detecting the location of aortic dissection ruptures. Based on an image of the aorta to be detected and its true and false lumen mask images, a first search starting layer is determined according to a first search rule. Then, based on the first search starting layer and the true and false lumen mask images, the location of the aortic dissection rupture is calculated according to a second search rule. The method, electronic device, and storage medium provided by this invention can improve the detection efficiency and accuracy of aortic dissection rupture locations. Furthermore, the algorithm is simple, efficient, and has strong generalization ability, achieving fully automated detection of aortic dissection rupture locations, and is easy to implement. In addition, the method provided by this invention can determine a second search starting layer and the aortic arch location according to a third search rule, and calculate the rupture initiation location of the aortic dissection according to the second search rule, further improving accuracy.

This invention relates to a vascular stent for the visceral region of the abdominal aorta, comprising an interconnected proximal non-degradable segment and a distal degradable segment. The proximal non-degradable segment includes a non-degradable metal skeleton and a covering structure. The distal degradable segment is a degradable bare skeleton. The proximal non-degradable segment corresponds to the location of the primary tear in the visceral region of the abdominal aorta, and the distal degradable segment corresponds to the location of branch vessels in the visceral region of the abdominal aorta. This invention is applicable to abdominal aortic dissection anatomical features, where the proximal stent segment is non-degradable and covered, while the distal visceral segment is degradable but not covered. It promotes false lumen thrombosis by sealing the primary tear through covering, while maintaining patency of branch vessels in the visceral segment by not covering. Simultaneously, a drug layer is attached to the covering of the proximal stent segment to actively promote intimal repair.

A pseudo-twin self-adaptive aortic dissection segmentation method and system across centers CTA, the method comprising: acquiring standardized three-dimensional CTA volume data; generating an aortic center of interest volume based on the standardized three-dimensional CTA volume data and aortic anatomical prior; performing overlapping three-dimensional block sampling within the aortic center of interest volume to generate a plurality of three-dimensional image blocks that overlap each other; inputting the three-dimensional image blocks into a three-dimensional segmentation network; constructing a block body joint loss to train the three-dimensional segmentation network; performing source domain style alignment on a low-frequency amplitude spectrum of a target domain CTA image through a Fourier style transformation; constructing a pseudo-twin self-adaptive network, including a source domain reference branch and a target domain adaptive branch; inputting the style-aligned target domain CTA image into the pseudo-twin self-adaptive network for prediction; fusing the prediction results of the source domain reference branch and the target domain adaptive branch to output three-dimensional segmentation results of the true lumen and the false lumen.

An aortic septotomy device for cutting aortic tissue between a true lumen and a false lumen. The aortic septotomy device having a handle device having a jaw actuator member and an optional cutter actuator member; a distal head assembly having a pair of jaw members movable between an opened position and a clamping position and a cutting mechanism movable within a channel; and a sheath member extending from the handle device to the distal head assembly; wherein at least one of the pair of jaw members is movable in response to actuation of the jaw actuator member to selectively grasp aortic tissue, and the cutting mechanism is movable within the channel in response to actuation of the cutter actuator member to cut at least a portion of the aortic tissue while the pair of jaw members grasps the aortic tissue.

The invention relates to the technical field of medical instruments, and discloses a form-adaptive aortic dissection false cavity or aneurysm cavity thrombosis promoting embolism device which comprises a double-layer metal grid spindle-shaped skeleton of a hollow structure. Comprising a connecting point at the upper end and the lower end and an arc-shaped side face connected between the two points. The isolating membrane is located between the double-layer metal grid fusiform skeletons, and the double-layer metal grid fusiform skeletons are small in size after being compressed, can be quickly released and automatically adapt to the shape of an aortic dissection false cavity or an aneurysm cavity, so that the aneurysm cavity or the false cavity is fully blocked, and thrombosis of the aneurysm cavity or the false cavity is promoted. The device is simple in structure, convenient to operate, capable of adapting to the shape of an interlayer false cavity to be fully filled, good in blood flow isolation effect, capable of rapidly promoting thrombosis and remodeling of the false cavity, free of reverse compression of a true cavity and capable of being applied to occasions where embolism needs to be conducted on abdominal aortic aneurysm cavities and other branch arteries.

The present invention relates to a tracheostomy tube obturator inserted into the tracheostomy tube so as to close the tracheostomy tube. According to the tracheostomy tube obturator of the present invention, the tracheostomy tube obturator comprises an endoscope, which is inserted into the tracheostomy tube, has a monitor mounted and fixed to the distal end thereof, has a camera module and a lighting module provided at the proximal end thereof, integrally extends from the monitor and is exposed to the proximal end of the obturator, so that, when the tracheostomy tube is replaced, the monitor stably monitors from the insertion point of the neck to the inside of the trachea so as to prevent the tracheostomy tube from entering a false lumen, and prevents damage to surrounding tissue and blood vessels so that fatal accidents due to complications can be prevented.

An embodiment includes a system comprising: a backbone; a first polyurethane shape memory polymer (SMP) foam on the backbone; a second polyurethane SMP foam on the backbone; a third polyurethane SMP foam on the backbone and between the first and second SMP foams. Other embodiments are described herein.

Devices and methods to treat a diseased portion of an aorta. A method of implanting an endoprosthesis within the aorta may include positioning the endoprosthesis within the aorta in a collapsed state with a constraint and deploying the endoprosthesis to the deployed diameter. The aorta has a true lumen and a false lumen due to the aorta having a defect, the true lumen defining a true lumen diameter and the false lumen formed by a false lumen wall defining a false lumen diameter. The deployed diameter of the endoprosthesis is such that the endoprosthesis extends along the true lumen and along at least a portion of the false lumen at a position where the defect is located in the aorta such that the endoprosthesis defines a flow bypass through a diseased portion of the aorta.

The present application relates to a kind of method and system for quantitatively analyzing aortic dissection chiral topography, belong to image processing technical field.Method includes: obtaining the image of enhanced CT angiography of aortic dissection patient in lying state;Based on the image of enhanced CT angiography, distinguish the true lumen and false lumen of aortic dissection;The chiral topography of the dissection image is measured, and measurement result is obtained;Based on the measurement result, the chiral topography of aortic dissection is quantitatively analyzed.The method is simple to operate, and operability is strong, it is convenient for clinician or technical personnel to understand and master, can relatively accurately describe the change characteristics of dissection spiral morphology.

The catheter assembly for slitting a dissection membrane of an aorta of a patient includes a first catheter configured to be inserted into a true lumen located on a first side of the dissection membrane a second catheter configured to be inserted into a false lumen located on a second side of the dissection membrane, and an electrically conductive wire electrically conductively joined to the first and the second catheters. The wire is further configured to be energized with electrical current such that the dissection membrane can be slit by the wire A method is also provided.

The invention discloses a spiral adaptive aortic dissection stent which comprises an annular stent body composed of multiple sets of fiber modules, every two adjacent sets of fiber modules are connected in a biological bionic mode and are in smooth transition through degradable polymers or composite materials, and each set of fiber module is formed by connecting two parts of skeletons. The dense skeleton corresponds to a false cavity proportion range, and the sparse skeleton corresponds to a true cavity proportion range. The design method of the spiral adaptive aortic dissection stent comprises the following steps: partitioning the aortic dissection according to a symbolic anatomical position and a main blood vessel branch of an abdominal aorta; designing a stent fiber module, and determining periods and numbers of dense skeletons and sparse skeletons in each aortic dissection area; and assembling the bracket body. The spiral adaptive aortic dissection stent can better adapt to the spiral morphology characteristics of the aortic dissection true cavity, and formation of new dissection crevasses induced by the tail end of the stent is reduced.

The application provides an aortic dissection rupture sealing device, which comprises an anchoring part, a hollow flow channel, and an intima around the rupture, so as to prevent the fluid communication between the true lumen of the aorta and the false lumen formed at the rupture; a stent, which is adjustably coupled to the anchoring part, has a connecting end and a free end, and at least the free end of the stent is located in a branch blood vessel; and the stent has a hollow structure in communication with the hollow flow channel and is supported in the branch blood vessel to communicate the true lumen and the branch blood vessel. The above scheme can avoid the continuous expansion of the false lumen caused by the incomplete sealing of the rupture and residual shunt, and at the same time, the blood supply of the blood vessel channel is retained to ensure the stability of the blood supply of the branch blood vessel, which is beneficial to meet the blood supply demand of the internal organs, spinal cord and the like supplied by the branch blood vessel.

The application discloses a kind of new aortic dissection tear twist degree measuring method, belong to clinical medical technical field, B type aortic dissection refers to the intima of descending aorta is torn, blood flow is propagated along the longitudinal direction of aorta through intimal break, and forms true cavity and false lumen.False lumen refers to the newly formed lumen after intimal tear.At present, there is lack of quantitative false lumen twist degree analysis index in domestic and foreign researches.Firstly, the CT angiography axial position sequence of patient when being diagnosed is acquired, and a space orthogonal rectangular coordinate system is established after being introduced into measurement software, the false lumen position and dissection longitudinal tear length are determined, the three-dimensional coordinates of target points are sequentially measured from the axial position image from the tear starting point to the end point, the three-dimensional coordinates of all measurement points are exported, and the false lumen twist degree related indexes are sequentially calculated.The above-mentioned patent has the following beneficial effects: by using the above-mentioned measurement scheme, the purpose of measuring the false lumen twist degree of B type aortic dissection can be achieved, and evaluation indexes are provided for further exploring the false lumen twist rule.

This application provides a method, apparatus, device, and storage medium for extracting aortic dissection membrane. The method includes: determining the corresponding dissection membrane boundary region based on the true lumen region and false lumen region within an aortic image; determining seed point pairs within the aortic image based on the pixel gradient within the dissection membrane boundary region; and clustering the pixels within the aortic image using the seed point pairs to obtain the corresponding aortic dissection membrane region. The embodiments of this application can achieve accurate extraction of the aortic dissection membrane region within an aortic image, ensuring automated and effective identification of the aortic dissection membrane region within an aortic image, enhancing the versatility and efficiency of aortic dissection membrane extraction, and reducing the treatment risk of aortic dissection.

An information processing device including a processor configured to: acquire an input image including a blood vessel; generate course information indicating a blood flow course based on the input image; specify at least a start position of an arterial dissection based on the course information; and discriminate between a true lumen and a false lumen of the arterial dissection based on the course information in a range set in accordance with the start position.

The application discloses a method, device and equipment for segmenting a CTA image, which is used for accurately segmenting a true lumen and a false lumen in an aorta. The method comprises the following steps: acquiring a CTA image in which an aortic dissection exists; extracting a target region image from the CTA image; performing down-sampling on the target region image to generate a first target image, inputting the first target image into a first segmentation network, identifying an aorta region in the first target image, performing up-sampling corresponding to the down-sampling on the first target image to generate a second target image; extracting a center line of the aorta region in the second target image; sampling a cross-section image perpendicular to the center line at each sampling point on the center line, stacking each cross-section image to generate a blood vessel straightening image; inputting the blood vessel straightening image into a second segmentation network, identifying a true lumen region and a false lumen region in the blood vessel straightening image; and restoring the true lumen region and the false lumen region in the blood vessel straightening image to the second target image to obtain the true lumen region and the false lumen region in the second target image.