37 results about "Target vessel" patented technology

A vessel harvesting system removes a target vessel from a patient for use as a bypass. An elongated harvesting instrument inserts into a body along a path of a target vessel which includes at least one side branch. The harvesting instrument includes a cutter for applying thermal energy to sever and cauterize the side branch. An endoscopic camera captures visible-light images from a distal tip of the instrument within a dissected tunnel around the target vessel. A thermal camera captures thermograms coinciding with the visible-light images to characterize a temperature present at respective surfaces in the tunnel. An image processor (e.g., an electronic controller) renders a video stream including the visible-light images and an overlay depicting the temperatures present on at least some of the respective surfaces when applying the thermal energy. A display presenting the video stream and overlay to a user can be an augmented-reality display.

This application relates to the field of medical device technology and provides an occlusion device. The occlusion device includes a catheter body, an occlusion component, and a multidimensional contact guide. When the multidimensional contact guide enters a vascular dissection or a non-target vessel, the sidewall of the multidimensional contact guide of the occlusion device can form an annular contact area or at least two sub-contact areas with the inner wall of the vessel, thereby encountering resistance and preventing the catheter from being further advanced. This avoids vascular damage caused by the occlusion component filling in branches or non-target vessels. The multidimensional contact guide is used to guide the movement of the catheter body and buffer the elastic deformation force of the distal end of the catheter body when the occlusion component is depressurized. The occlusion device provided by this application can guide the occlusion component into the target occlusion area, avoiding entry into vascular dissection or non-target vessels; and buffer the elastic deformation force of the distal end of the catheter body when the occlusion component is depressurized, preventing the distal end of the occlusion device from puncturing the vessel.

Systems and methods are provided for reducing the reliance on operator skill during vascular ultrasound procedures. The placement of an ultrasound probe to assess perfusion associated with a wound may be facilitated by receiving input suitable for identifying an anatomical region associated with the wound and providing an indication of a suitable initial probe position, and optionally, probe orientation, for acoustically interrogating a target arterial vessel known to provide perfusion to the anatomical region associated with the wound. Regions exhibiting arterial flow may be detected as the probe is moved, enabling arterial vessel detection and localization. A subregion within the detected arterial vessel and a beam steering angle may be autonomously determined for spectral Doppler data collection, enabling the measurement of hemodynamic measures associated with the arterial vessel. Example apparatus for securing the probe to the patient and facilitating probe positioning to search for a target vessel are disclosed.

A vascular repair device includes a hydrogel substrate configured to be positioned at least partially around a target vessel, a biodegradable adhesive configured to be positioned at least partially around the hydrogel substrate, and a biodegradable mold defining a trough sized to accommodate at least a portion of the target vessel and configured to contain at least a portion of the biodegradable adhesive.

This invention discloses a medical image processing method, device, medium, and product, relating to the field of medical image processing technology. The method includes: acquiring the segmentation results of hemangioma and tumor-bearing vessels in a scanned image of a target vessel; determining a first point set for the hemangioma based on the hemangioma segmentation results; determining a second point set for the tumor-bearing vessels based on the tumor-bearing vessel segmentation results; determining a bidirectional neighboring point set for the first and second point sets, each bidirectional neighboring point set including at least three non-collinear pixels; determining a plane equation for the tumor diameter plane based on the bidirectional neighboring point set; determining the intersection points of the plane containing the plane equation with the first and second point sets, and using the plane enclosed by all intersection points as the tumor diameter plane. The technical solution provided by this invention solves the technical problem of slow speed in existing tumor diameter plane determination methods, improving the speed of tumor diameter plane determination.

Systems, devices, and methods for providing procedure-specific workflow guidance are provided. The workflow guidance may include providing selectable options on a display device to a user including a selectable option to select a target vessel and a prompt to move an intravascular imaging device within the selected target vessel. Imaging data is received from the intravascular imaging device within the selected target vessel. The workflow guidance may be used to identify an area of interest within the selected target vessel and automatically display vessel measurements corresponding with the area of interest on the display device.

The present invention describes a system and method for accessing small arteries for delivering a catheter to a target vessel, such as a cerebral vessel. In particular, the present invention describes a system that allows for direct introduction of a catheter through a vascular opening without an external sheath. The distal tip of the catheter is protected by a protective cover. Methods for introducing the catheter into the vessel and a kit are also described.

The invention discloses a myocardial perfusion quantitative evaluation method. The method comprises the following steps: acquiring an X-ray angiography image target sequence and a computed tomography angiography image of a target blood vessel; determining the volume of a target blood vessel of each X-ray radiography image in the X-ray radiography image target sequence, obtaining the maximum volume and the minimum volume of the target blood vessel from the beginning of filling to the end of filling, and further determining a blood flow volume, and recording the blood flow volume as an initial blood flow volume; according to the computed tomography angiography image, determining the mass or volume of the myocardial area perfused by the target blood vessel to obtain the mass or volume of the target myocardial; carrying out image fusion, and further determining the distribution condition of the target blood vessel on the myocardium; determining target blood flow corresponding to the target blood vessels according to the initial blood flow and the distribution condition of the target blood vessels on the myocardium, and further calculating a quantitative myocardial perfusion value. The method can accurately obtain the quantitative myocardial perfusion value. The invention further discloses a myocardial perfusion quantitative evaluation device, electronic equipment and a storage medium.

The invention provides an intracranial atherosclerotic plaque progress early warning system and method based on multi-stage MRA image and multi-modal blood flow parameter fusion, and is applied to the technical field of medical data processing. The method comprises the following steps: on the basis of a patient baseline, a follow-up period MRA image and a black blood sequence magnetic resonance image, firstly obtaining blood vessel binary volume data through a blood vessel segmentation technology, and generating a blood vessel geometric model through curved surface construction and triangularization; and converting the target blood vessel into a surface model, processing and encrypting the narrow area by using gridding software to obtain a target blood vessel grid, and further obtaining whole-brain whole-brain hemodynamic parameters. Subsequently, a high-risk area is determined according to blood flow parameter characteristic values of an anatomical segment, a structured matrix is established, parameter change abnormity is compared, a plaque progress index is defined, after parameter differences are grouped and compared, a risk prediction model is established by fusing various types of information, and finally, a multi-dimensional visualization and quantification result is generated by combining three-dimensional blood vessel space information. And support is provided for early warning of the progress of the intracranial atherosclerotic

The method for measuring vascular state comprising: outputting a first transmission electromagnetic signal to a first detecting location of a target vessel, and outputting a second transmission electromagnetic signal to a second detecting location of the target vessel; receiving a first feedback electromagnetic signal induced, at the first detecting location, by the first transmission electromagnetic signal, and receiving a first feedback electromagnetic signal induced, at the first detecting location, by the first transmission electromagnetic signal; determining a signal characteristic difference between the first feedback electromagnetic signal and the second feedback electromagnetic signal; and determining at least one vascular state of the target vessel according to the signal characteristic difference.

This disclosure provides a method for generating a catheter intervention path, a catheter intervention control method, and a system. The generation method includes: receiving target three-dimensional image data; constructing a three-dimensional vascular model containing a target region based on the target three-dimensional image data; acquiring a target vessel matching the target region in the three-dimensional vascular model; determining the hemodynamic parameters of the target vessel within a preset time period; and determining several embolization support points after catheter intervention in the target vessel based on the hemodynamic parameters and a preset determination strategy, thereby generating a catheter intervention path based on the several embolization support points and the embolization target point. In this solution, by integrating fluid dynamics principles, the wall contact points of the blood vessel are accurately, comprehensively, and thoroughly evaluated to obtain reasonable and stable embolization support points for catheter intervention, effectively ensuring the accuracy, efficiency, and rationality of the catheter intervention path determination, as well as the precision and safety of the surgery.

The vascular plug includes an upper structure that can expand from a collapsed percutaneous insertion configuration to an expanded deployed or use configuration. The upper structure includes a primary and secondary three-dimensional shape that allows occlusion of a wide range of vessel sizes from small to large through a small, out of proportion, delivery catheter. The plug includes shape memory elements for creating the radial force and the larger secondary three-dimensional twist or helical shaped upper structure required to create the target vessel occlusion.

An ultrasound imaging system configured to assess the impact of placement of a vascular access device on fluid flow through a target vessel. The ultrasound imaging system includes an ultrasound probe having an ultrasound array configured to capture one or more ultrasound images of the target vessel and a Doppler array configured to detect the fluid flow through a region of interest of the target vessel. The ultrasound imaging system further includes a console in communication with each of the ultrasound array and the Doppler array, the console configured to determine the region of interest of the target vessel.

A liquid embolic composition of natural polymers, water, and angiographic contrast agents improves neurovascular interventions, making them more reliable, safe, and affordable. The embolic material is made of a single component activated by blood calcium ion, which triggers coagulation, and that offers superior mechanical stability and does not cause fragmentation in the target vessel. The material retains superior long-term mechanical durability after deployment and provides sufficient visualization under fluoroscopy with iodine-based angiographic contrast compounds or other radiopaque compositions. Described herein are aqueous solutions that enable a high concentration gellan gum (greater than 0.5 wt %) to retain sol state even at the range of body temperature (30-40° C.). This discovery means that it is possible to increase the concentration of gellan gum without losing its inject-ability, yet significantly improve its mechanical stability after delivery.

[0003] A light-transmitting microcatheter device and method for intravascular embolization are described herein. A microcatheter device is provided, comprising a working lumen and a mechanically protected waveguide. The working lumen has at least one exit port at a distal end of the working lumen and is configured for intravascular injection of a photoactivated embolic agent (PEA) into a target vessel through the at least one exit port. A mechanically protected waveguide (MPW) is operably connected to the working lumen and configured to emit at least one electromagnetic wave through the at least one exit port for delivery to the target vessel.

A system for selecting a collateral vessel to perform a retrograde chronic total occlusion (CTO) treatment procedure is provided. The system includes one or more processors configured to: receive angiographic image data (120) representative of an occlusion in a target blood vessel; analyzing the angiography image data (120) to identify one or more candidate collateral vessels (1501... i) for approaching the occlusion in the target vessel in a retrograde direction; and assigning a suitability score to each candidate collateral vessel (1501... i), the suitability score representing a suitability of the vessel for performing the retrograde CTO treatment procedure on the occlusion.

An apparatus for vascular access is described herein. The apparatus can comprise a manipulating device configured to releasably couple a cartridge including a needle, a catheter, and a guidewire that are coaxially disposed with respect to each other, and a robotic arm coupled to the manipulating device. The manipulation device or cartridge can include a plurality of actuation mechanisms configured to selectively advance the needle, the catheter, and the guidewire when the manipulating device is coupled to the cartridge. The robotic arm can include a plurality of joints that are configured to rotate about a plurality of axes to position the cartridge relative to the arm of the patient such that the needle, the catheter, and the guidewire can be inserted into a target vessel of the patient.

The invention provides a blood vessel repairing method and device, a storage medium and equipment, the method is applied to the technical field of blood vessel repairing, the method comprises the steps that a center line skeleton of a target blood vessel is obtained, double-layer repairing processing is conducted on the center line skeleton, and the first-layer repairing processing is based on the distance between the tail end points of the center line skeleton; repairing short-distance fracture with high confidence coefficient in the center line skeleton, and realizing efficient preprocessing; and the second layer of repair processing is based on a target connection angle between each end point and the center line skeleton, a connection angle threshold is dynamically adjusted according to the blood vessel grade, and then the center line skeleton is repaired based on the target connection angle and the connection angle threshold. A progressive repair chain from simple to complex is formed from the distance to the connection angle, high complexity of one-time global repair is avoided, and the efficiency and accuracy of vascular repair are improved.

Embolic particles of salted thermally crosslinked gelatin provide for temporary embolization for vessels within a patient. The embolic particles may be formed by drying a gel or liquid layer of gelatin and salt to form a dry salted gelatin sheet which can then be milled and sieved to a selected particle size range. The embolic particles may be characterized as a collection of particles with a majority of the particles having a platelet shape or ellipsoidal shape with a thickness or dimension no more than about 2000 microns. Useful sieved particle sizes include from 63 microns to 250 microns, or less than 63 microns. Methods of making the embolic particles from sheets of dry salted thermally crosslinked gelatin are described, as are methods for making the sheets. Methods and medical systems for performing temporary occlusion of a blood vessel are also described.

Systems, devices, and methods for providing procedure-specific workflow guidance are provided. The workflow guidance may include providing selectable options on a display device to a user including a selectable option to select a target vessel and a prompt to move an intravascular imaging device within the selected target vessel. Imaging data is received from the intravascular imaging device within the selected target vessel. The workflow guidance may be used to identify an area of interest within the selected target vessel and automatically display vessel measurements corresponding with the area of interest on the display device.

Disclosed are systems and methods for energy-efficient pulsing in ultrasound-based blood pressure sensor implants. In some embodiments, disclosed methods comprise conducting ultrasound sampling of a target vessel for blood pressure measurement only during defined time windows correlated to one or more characteristic features of the vessel during a cardiac cycle representing maximum and minimum diameters of the target vessel. In some embodiments, time windows are predicted by synchronizing ultrasound pulsing with a patient's electrocardiogram (ECG). In other embodiments, time windows are predicted by conducting limited periodic sampling and fitting the resulting limited measurements to a mathematical function that describes the waveform of vessel diameter over a cardiac cycle. In yet other embodiments, maximum and minimum diameter may be computed directly from the mathematical function.

The application relates to a coronary vessel segmentation method, device, equipment, storage medium and program product. The method comprises the following steps: inputting an acquired to-be-segmented image into a segmentation network for initial segmentation, obtaining an initial vessel segmentation image of a coronary vessel in the to-be-segmented image; determining an initial tube lumen density attenuation gradient (TAG) image corresponding to the coronary vessel according to the initial vessel segmentation image of the coronary vessel; inputting the to-be-segmented image and the initial TAG image into the segmentation network for target segmentation, and determining a target vessel segmentation image of the coronary vessel; wherein the image value of the coronary vessel from the first end to the end in the initial TAG image changes linearly. The method can improve the accuracy of the obtained coronary segmentation result.

To provide safe and effective therapies improved for a heart failure patient, and a device and a system adapted and configured to perform the therapies.SOLUTION: A system, a device, and a method for transvascular ablation of target tissue are disclosed herein. The device and method may, in some examples, be used for splanchnic nerve ablation to increase splanchnic venous blood capacitance to treat at least one of heart failure and hypertension. For example, the devices disclosed herein may be advanced endovascularly to a target vessel in the region of a thoracic splanchnic nerve (TSN), such as a greater splanchnic nerve (GSN) or a TSN nerve root. Also disclosed is a method of treating heart failure, such as HFpEF, by endovascularly ablating a thoracic splanchnic nerve to increase venous capacitance and reduce pulmonary blood pressure.SELECTED DRAWING: Figure 1

This operation method of a medical image processing device comprises the steps of: acquiring, from a first external device, two-dimensional first images including a patient's vascular structure and pelvic structure by tomographically imaging the inside of the patient's pelvic cavity; generating three-dimensional modeling data by performing three-dimensional modeling on the first images; when a medical staff performs labeling to record a vessel name for a target vessel of the vascular structure in the three-dimensional modeling data, performing labeling in real time so that the vessel name is recorded for the target vessel in the first images; and registering the three-dimensional modeling data with a second image which includes the patient's pelvic cavity structure and pelvic curvature and is acquired from a second external device by three-dimensional scanning of the patient, generating an augmented reality-based composite image in which a medical image is output on the patient's body in the second image, and transmitting the first images and the three-dimensional modeling data to an output device that outputs the composite image.

An apparatus for vascular access is described herein. The apparatus can comprise a cart movable from a first location to a second location near a patient, a manipulating device configured to releasably couple a cartridge including a needle, a catheter, and a guidewire that are coaxially disposed with respect to each other, and a robotic arm having a first end mounted to the cart and a second end coupled to the manipulating device. The manipulation device can include a plurality of actuation mechanisms configured to selectively advance the needle, the catheter, and the guidewire when the manipulating device is coupled to the cartridge. The robotic arm can include a plurality of joints that are configured to rotate about a plurality of axes to position the cartridge relative to the arm of the patient such that the needle, the catheter, and the guidewire can be inserted into a target vessel of the patient.

The vascular state measurement method includes: performing a first eddy current induction measurement to a target vessel by a first measurement range to derive a first signal characteristic difference; adjusting at least one of a first terminal position and a second terminal position of the first measurement range to form a second measurement range; performing a second eddy current induction measurement to the target vessel by the second measurement range to derive a second signal characteristic difference; and performing at least one action according to the first signal characteristic difference and the second signal characteristic difference, wherein the at least one action is select from determining an optimal detection section of the target vessel and estimating at least one stenosis or sclerosis location of the target vessel.

Embolic particles of salted thermally crosslinked gelatin provide for temporary embolization for vessels within a patient. The embolic particles may be formed by drying a gel or liquid layer of gelatin and salt to form a dry salted gelatin sheet which can then be milled and sieved to a selected particle size range. The embolic particles may be characterized as a collection of particles with a majority of the particles having a platelet shape or ellipsoidal shape with a thickness or dimension no more than about 2000 microns. Useful sieved particle sizes include from 63 microns to 250 microns, or less than 63 microns. Methods of making the embolic particles from sheets of dry salted thermally crosslinked gelatin are described, as are methods for making the sheets. Methods and medical systems for performing temporary occlusion of a blood vessel are also described.

The invention relates to a method for motion-compensated reconstruction of a target vessel (13) by - Providing (S1) an initial 3D reconstruction of a volume with the target vessel (13), - Identifying (S2) an image of the target vessel (13) and an image of a secondary vessel (14) different from the target vessel in the first 3D reconstruction, - Forward projection (S3) of the target vessel image (13) and the secondary vessel image (14) onto forward projection images, - Deleting (S4) the image of the second vessel (14) in the forward projection images, - Creating (S5) a secondary 3D reconstruction from the forward projection images with automatic motion compensation. The invention further relates to an image processing device for motion-compensated reconstruction, a computed tomography device, a computer program and a computer-readable storage medium.

The invention relates to a method for motion-compensated reconstruction of a target vessel (13) by - Providing (S1) an initial 3D reconstruction of a volume with the target vessel (13), - Identifying (S2) an image of the target vessel (13) and an image of a secondary vessel (14) different from the target vessel in the first 3D reconstruction, - Forward projection (S3) of the target vessel image (13) and the secondary vessel image (14) onto forward projection images, - Deleting (S4) the image of the second vessel (14) in the forward projection images, - Creating (S5) a secondary 3D reconstruction from the forward projection images with automatic motion compensation. The invention further relates to an image processing device for motion-compensated reconstruction, a computed tomography device, a computer program and a computer-readable storage medium.

This invention relates to a universal catheter for accessing visceral arteries via the radial artery, belonging to the field of medical device technology. The catheter is hook-shaped and comprises, on the same plane, a first straight segment, a first curved segment, a second straight segment, a second curved segment, a third straight segment, a third curved segment, and a straight head segment arranged sequentially from the end closest to the operator, with the straight head segment facing the beginning of the catheter. The specialized catheter provided by this invention increases the catheter's curvature, resulting in better stability after insertion into the target vessel; it also has better torque transmission capability, good maneuverability, and makes it easier to reach the target location within the blood vessel, shortening the operation time and increasing the success rate of the surgery.