3689 results about "Vein" patented technology

A delivery device for delivering an instrument through an intravenous catheter may include a housing, a rotary element disposed within the housing, and an instrument. In some embodiments, the rotary element may include a groove, which may extend around at least a portion of the circumference of the rotary element. In some embodiments, the instrument may be disposed within the groove and / or between the rotary element and the housing. In some embodiments, in response to rotation of the rotary element with respect to the housing, the instrument may be advanced distally through an outlet of the housing. In some embodiments, the instrument may include a guidewire, a probe, blood draw tubing, or a light tube.

A non-invasive physiological sensor system implemented as a smart watch or other wearable device includes an emitter for emitting light and a detector for collecting light after the light interacts with a tissue of a wearer. The system can measure light intensity at one or more radial distances to estimate attenuation parameter values that can be used to correct physiological parameter bias across subjects. In addition or alternatively, the system can determine whether a detector is positioned sufficiently proximate to an obstructing tissue (for example, an artery or vein) so as to cause inaccurate measurements by the detector.

The invention relates to the technical field of image segmentation, and discloses an image segmentation method and an image segmentation system. The method comprises the following steps: acquiring a vein 3D blood vessel image of a user through a preset intelligent door lock, and performing standardized filtering and contrast enhancement processing on the vein 3D blood vessel image to obtain a preprocessed 3D blood vessel image; performing multi-scale convolution and layer attention mechanism analysis on the preprocessed 3D blood vessel image to obtain 3D feature representation; executing an adaptive 3D to 2D projection algorithm on the 3D feature representation to obtain a 2D blood vessel feature map; performing image segmentation on the 2D blood vessel feature map by adopting a cross-scale cascade hierarchical transformer network to obtain an initial 2D segmentation result; performing reverse boundary attention optimization on the initial 2D segmentation result to obtain an optimized 2D segmentation map; and performing cross entropy loss function evaluation and optimization on the optimized 2D segmentation image, and outputting a target 2D segmentation result. The method and the device improve the precision of image segmentation.

The invention relates to a puncture path planning system and equipment adopting the puncture path planning system, which directly solve the difficulty of peripheral artery puncture and laterally solve the defects of some deep vein catheterization and vasostomy, and the puncture path planning system comprises at least one memory in which a computer program is stored, the at least one processor is configured to implement the puncture path planning method when executing a computer program, and the method comprises the following specific steps: generating a path leading to a target position from different starting points and angles of a blood vessel by adopting a preset geometric algorithm based on a preset safety margin constraint, blood vessel feature constraint information and surrounding tissue constraint information; the generated puncture needle inserting path is integrated into a blood vessel 3D reconstruction model to be displayed in different colors or line styles. The method has the advantages that the blood vessel model is accurately constructed, the puncture path is safely generated, and catheterization of the peripheral artery indwelling needle is more efficient.

Described herein are shunt devices configured to achieve a targeted reduction in peak systolic pressure by percutaneous ly shunting from the superior vena cava to the right pulmonary artery. The shunt devices include a check valve with a cracking pressure to preserve a minimal transpulmonary pressure. Also described herein are flow diversion devices placed between pulmonary circulation vessels and venous vessels. The disclosed flow diversion devices are physiologically responsive through an adjustable orifice that can be adjusted after initial implantation through a non-invasive or minimally invasive procedure. Disclosed herein are flow control systems that are configured to reduce recruitment of blood from the splanchnic system. The flow control systems include a variable orifice constrictor (e.g., a covered stent) and a controller that delivers energy to the constrictor to reduce the cross-sectional area of the lumen through the variable orifice constrictor.

Some embodiments disclosed herein relate to devices and methods for controlling placement of intraocular implants within a patient's eye including but not limited to placement within or near the collector ducts of Schlemm's canal located behind the trabecular meshwork. In some embodiments, a handheld peristaltic rotor device having a compression element can be positioned on a corneal surface of the eye and rotated to create a peristaltic movement of blood in one or more episcleral veins to generate blood reflux within Schlemm's canal such that one or more collector ducts, or channels, of Schlemm's canal can be located. In some embodiments, an implant can be implanted near the identified location of the one or more collector ducts, or channels.

The invention discloses an automatic vein and artery puncture control method, which is used for realizing high-precision puncture through precise control, and comprises the following steps of: after determining to start automatic vein and artery puncture control, collecting a blood vessel ultrasonic image; aiming at the target blood vessel ultrasonic image data, establishing a static artery blood vessel detection model based on a lightweight deep network and a target detection algorithm; the blood vessel detection model is used for detecting and positioning blood vessels; collecting a blood vessel image to be detected and positioned in real time, and obtaining the position and category of the blood vessel based on the trained blood vessel detection model; determining a target blood vessel position based on blood vessel positioning and classification, wherein the target blood vessel position is a puncture target position; planning a puncture path based on the target blood vessel position, including vein puncture path planning and artery puncture path planning; and converting the path and the control parameters based on puncture path planning. The invention further discloses a device and a system, which have low requirements on working environment, can adapt to dynamic environment, are convenient to popularize, reduce puncture difficulty and labor intensity and are portable.

The invention relates to the technical field of medical instruments, and particularly discloses a high-precision automatic vein blood sampling system and method, and the system comprises an optimal puncture blood vessel decision module which determines an optimal puncture blood vessel data set; the dynamic ultrasonic data acquisition module is used for guiding an ultrasonic probe on a mechanical arm to perform skin fitting ultrasonic imaging based on the optimal puncture blood vessel coordinate under the camera coordinate system to obtain dynamic ultrasonic data of the optimal puncture area; the ultrasonic blood vessel data acquisition module performs enhancement and ROI extraction on blood vessel signals in the dynamic ultrasonic data; an ultrasonic blood vessel data analysis module extracts all potential blood vessel form distribution data sets from the time sequence blood vessel ROI candidate set, and performs puncture optimization degree and credibility analysis on all the potential blood vessel form distribution data sets to determine a final needle insertion point and a final puncture angle; the vein blood sampling puncture control module is used for controlling a puncture needle to perform puncture blood sampling at a final puncture position at a final puncture angle; the device is used for realizing high-precision automatic control of vein blood sampling.

Various systems and methods are provided for reducing pressure at an outflow of a duct such as the thoracic duct or the lymphatic duct. A catheter system can include a catheter shaft configured to be at least partially implantable within a patient's vein, a flexible membrane attached to the catheter shaft, the flexible membrane being a collapsible, tube-like member having a lumen extending therethrough, and a single selectively deployable restriction member formed over a portion of the flexible membrane at substantially a midpoint between a proximal end of the flexible membrane and a distal end of the flexible membrane, the restriction member being configured to control a size of the lumen so as to direct a controlled volume of fluid from an upstream side of the restriction member to a downstream side the restriction member.

The invention relates to the technical field of orthopedic diagnosis and treatment, in particular to a monitoring method and system for dynamically monitoring the lower limb vein blood flow state and a storage medium. The method comprises the following steps: acquiring a lower limb vein ultrasound image sequence of a target patient, and establishing a blood vessel space probability distribution map based on anatomical priori knowledge; encoding the blood vessel space probability distribution map into conditional prior information, and constructing a blood vessel ontology knowledge base; constructing a multi-level diffusion probability model according to the blood vessel ontology knowledge base; and performing vascular structure reconstruction and blood flow feature extraction on the lower limb vein ultrasound image sequence by using the multi-level diffusion probability model to obtain blood vessel fluid feature data. Vascular positioning, branch recognition and morphological analysis are completed step by step from macroscopic to microcosmic through the three-level diffusion model, blood flow dynamic information is extracted in combination with time sequence features, and comprehensive representation of a vascular system is achieved.

An ultrasound probe includes a light source configured to project a visual indication onto a skin surface of the patient. The visual indication includes different visual characteristics that are based on characteristics of the anatomical target such as a location with respect to the probe and / or an identification of an anatomical target as a vein or as an anatomical element other than a vein, such as an artery. Visual characteristics include shapes, locations, and / or colors of the projected visual indication. Logic of the probe performs location and / or identification processes on ultrasound image data that may include applying trained machine-learning models to the ultrasound image data. Some embodiments, include a virtual / augmented reality headset and / or a needle tracking system. An ultrasound system includes machine-learning logic that generates the trained machine-learning models from historical ultrasound image data sets and actual anatomical target location / identification data sets.

The invention provides an early-stage automatic identification method and system for acute kidney injury related to cardiac surgery, and relates to the technical field of physiological parameter detection. The method comprises the following steps: acquiring average arterial pressure, cardiac blood discharge volume, central venous pressure and blood oxygen saturation, regularly recording and extracting data of adjacent time points, calculating a variation range, screening a mutation region, judging whether a reference range is exceeded or not, analyzing a multi-parameter synchronous variation condition, and marking a hemodynamics abnormal state. According to the method, abnormal changes of hemodynamics and urine metabolism are accurately recognized through real-time monitoring and multi-parameter analysis, the urine flow rate and the metabolite excretion rate are combined, misjudgment of a single index is avoided, the fineness of renal function change analysis is improved, the high-risk time period is accurately positioned through time cross comparison, the diagnosis accuracy is improved, and the diagnosis accuracy is improved. Trend analysis and risk grade division enable the change of the illness state to be more visual, and a real-time early warning system effectively monitors the fluctuation trend, optimizes clinical management and improves the timeliness of medical response.

The invention discloses an embolism part for peripheral arteriovenous vessels, the embolism part comprises an anchoring part and a blocking part fixedly connected with the anchoring part, the blocking part adopts polyurethane shape memory foam, the expansion rate of the polyurethane shape memory foam is 50-100 times, and a preparation method of the polyurethane shape memory foam comprises the following steps: step 1, preparing a polyurethane shape memory foam material; the preparation method comprises the following steps: preparing a polyurethane acrylate prepolymer from macromolecular polyol, diisocyanate, a chain extender containing disulfide bonds, other micromolecular chain extenders and an acrylate end-capping reagent; and 2, uniformly mixing the polyurethane acrylate prepolymer, a foaming agent, a foaming promoter and a photoinitiator to obtain a foaming solution, and sequentially carrying out light curing and foaming on the foaming solution to obtain the polyurethane shape memory foam. According to the embolism part, the polyurethane shape memory foam is adopted as the blocking part, the blocking part applies radial acting force to the wall of the blood vessel all the time based on the expansion trend of the blocking part, and the blocking part and the anchoring part jointly act and can be stably maintained in the blood vessel.

An ultrasound probe includes a light source configured to project a visual indication onto a skin surface of the patient. The visual indication includes different visual characteristics that are based on characteristics of the anatomical target such as a location with respect to the probe and / or an identification of an anatomical target as a vein or as an anatomical element other than a vein, such as an artery. Visual characteristics include shapes, locations, and / or colors of the projected visual indication. Logic of the probe performs location and / or identification processes on ultrasound image data that may include applying trained machine-learning models to the ultrasound image data. Some embodiments, include a virtual / augmented reality headset and / or a needle tracking system. An ultrasound system includes machine-learning logic that generates the trained machine-learning models from historical ultrasound image data sets and actual anatomical target location / identification data sets.

The invention provides an image-based PICC (Peripherally Inserted Central Catheter) intravenous therapy information monitoring system and method, relates to the field of intelligent image analysis, and is used for judging whether a puncture part of a patient has an infection sign or not by performing time sequence analysis on high-definition images of the puncture part of the patient at different time points in a target monitoring time period. Therefore, the accuracy and timeliness of infection monitoring can be improved, and infection signs can be found in an early stage, so that measures can be taken in time, and the incidence rate and severity of infection are reduced.

The invention belongs to the technical field of medical informatization, and provides an anesthesia medication management system with biological recognition, comprising: a biological recognition module verifies the identities of medical staff and patients through a vein recognition technology; the multi-source data acquisition module acquires vital sign data and equipment parameters of a patient in real time to obtain multi-source data; the intelligent drug management module authorizes to store and take drugs according to the biological recognition result and generates an electronic anesthesia prescription; the processing decision module receives the multi-source data and generates a medicine adjusting instruction through a preset rule and an algorithm in combination with an electronic anesthesia prescription; the execution control module carries out secondary confirmation on the medicine adjusting instruction through biological recognition and then sends the medicine adjusting instruction to anesthetic infusion equipment to be executed; according to the method, through the electroencephalogram double-frequency index, the entropy index and the hemodynamic parameters, in combination with the anesthesia depth evaluation result and the personalized drug metabolism and effect model, the medication scheme is dynamically adjusted, the optimal infusion rate is generated, the anesthesia depth control is more accurate, and the fluctuation range is narrowed.

An intra-vessel transcatheter filter device (1) designed to capture and remove emboli, thus preventing distal embolization, comprising: • a tubular filter (2) comprising a flexible porous material and defined by a distal element and a proximal element, namely a main body (3) and a funnel (4); i. said main body (3) having a length adapted to extend within a suitable vessel zone; said main body (3) comprising: a) a distal end (5) that is adapted to be radially coupled with said zone and hermetically sealed to it when the device is in an active configuration, said distal end (5) being provided of selectively actionable closure means so that said distal end is designed to be open when the device is in an active configuration and closed before the device retraction, b) a proximal end (6); ii. said funnel (4) forming an extension of said main body (3), with the funnel base located at said proximal end (6). • a support structure assembly (8) comprising: i. a supporting catheter (11) extending within said main body (3), ii. one radially expandable distal structure (9) fixed to said distal end (5), iii. one radially expandable proximal structure (10) positioned in correspondence of said proximal end (6), said distal structure (9) and said proximal structure (10) being fixed at least in an end to said supporting catheter (11).

Systems and methods can remove material of interest, including blood clots, from a body region, including but not limited to the circulatory system for the treatment of pulmonary embolism (PE), deep vein thrombosis (DVT), cerebrovascular embolism, and other vascular occlusions.

The invention discloses a blood filter early warning method based on multi-parameter coupling and a blood filter, and aims to solve the problems of lagging and high false alarm rate of the existing single parameter threshold alarm. The method comprises the following steps: acquiring time sequence data of at least two monitoring parameters such as transmembrane pressure and venous pressure in real time; constructing a risk state vector based on the sequential data; calculating a risk covariance matrix of the vector in a set time window so as to quantify a collaborative relationship of variation trends among parameters; performing matching degree comparison on the matrix and a pre-stored standard fault feature matrix; and generating and outputting early warning information at least indicating one equipment abnormal mode based on the comparison result. By analyzing a multi-parameter dynamic cooperative relationship instead of a single parameter absolute value, early warning and intelligent preliminary diagnosis of filter blood coagulation, pipeline abnormity and other faults are realized, and the timeliness, accuracy and clinical decision support capability of alarm are remarkably improved.

The invention discloses an intelligent anesthesia drug delivery system and a control method thereof, and the method comprises the steps: obtaining operation information, predicting operation time, predicting operation state stability, determining a drug delivery strategy according to an operation time prediction value and an operation state prediction value, and controlling a vein micro pump based on a collaborative sliding mode control algorithm of an intelligent algorithm. And judging whether the anesthesia scheme needs to be adjusted. According to the method, prediction of the operation time and the operation state is achieved, a mode for objectively selecting anesthesia strategies is provided, anesthesia strategy selection errors caused by artificial omission or insufficient level are avoided, a collaborative sliding mode control algorithm based on an intelligent algorithm is used for controlling the multi-channel vein micro pump, and the operation efficiency is improved. Synergism of multiple drugs during injection is guaranteed, and optimal drug effect synergy is achieved.

Systems and methods can remove material of interest, including blood clots, from a body region, including but not limited to the circulatory system for the treatment of pulmonary embolism, deep vein thrombosis, cerebrovascular embolism, and other vascular occlusions. The capture system can include a tubular body comprising a first end, a second end, and an axial length therebetween, the first end having an opening and a capture guide. The capture system can include one or more tensioners coupled to the capture guide. The tubular body has a first configuration in which the first end and the capture guide are expanded while the second end and a majority of the tubular body remains compressed. The tubular body is transformable to a second configuration by application of tension by the tensioners. The catheter can remove a large volume of clot.

The invention relates to the technical field of medical instruments, and discloses intravenous infusion puncture angiography glasses equipment and an application method thereof. The equipment comprises an infrared imaging module, an image processing module, a data communication module, a correction early warning module and a display module. The infrared imaging module collects original blood vessel image data, the image processing module generates blood vessel positioning information, the data communication module interacts with a background server, the correction early warning module generates an early warning prompt according to a server instruction, and the display module displays related information in an overlapping mode. By accurately positioning the blood vessel and providing puncture guidance, the equipment improves the success rate of venous transfusion puncture, reduces the pain of a patient, improves the medical working efficiency, reduces the medical cost, guarantees the medical safety, and is suitable for various venous transfusion puncture scenes, especially patients with poor blood vessel conditions.

The invention discloses a venous thrombosis risk assessment method and system based on a large language model and deep learning, and the method and system can comprehensively capture the clinical information of a patient through the comprehensive utilization of multi-dimensional and multi-modal clinical diagnosis and treatment data, and improve the accuracy of risk assessment. An automatic feature extraction and selection technology is realized by applying a large language model, manual intervention is reduced, and the comprehensiveness and accuracy of feature extraction are improved. The introduction of the deep learning model enhances the prediction performance of the model, supports real-time data processing and risk prediction, and realizes the automation and real-time performance of risk assessment. Besides, the model framework supports continuous learning and updating, can adapt to new clinical data and research progress, and keeps advancement and effectiveness of the model, thereby providing high-quality hospitalized patient VTE risk assessment services.

Systems and methods can remove material of interest, including blood clots, from a body region, including but not limited to the circulatory system for the treatment of pulmonary embolism (PE), deep vein thrombosis (DVT), cerebrovascular embolism, and other vascular occlusions. The capture system can include a tubular body comprising a first end, a second end, and an axial length therebetween, the first end having an opening and a capture guide. The capture system can include one or more tensioners coupled to the capture guide. The tubular body has a first configuration in which the first end and the capture guide are expanded while the second end and a majority of the tubular body remains compressed. The tubular body is transformable to a second configuration by application of tension by the tensioners. The catheter can remove a large volume of clot. In some embodiments, the body of the catheter or the funnel tip is expandable. The catheter can include a dilator and a peel-away cover.

A system and method for determining a difficult venous access of a patient. Logic processes meta data acquired by a vasculature assessment device coupled with the patient. The meta data, e.g., vessel diameter, vessel depth, vessel wall thickness, vessel wall elasticity, tissue elasticity, tissue profusion, blood flow rate, or hydration level. The logic further determines a difficult venous access by performing an algorithm on the meta data. The algorithm is defined utilizing machine learning techniques applied to an ongoing collection data sets acquired from a plurality of systems across a plurality of patients undergoing catheter insertion events. The data set may also include patient data such as weight, age, etc. The vasculature assessment device may include ultrasound imaging, infrared imaging, molecular imaging, Raman spectroscopy, or optical coherence tomography to acquire one or both of three-dimensional imaging data and the meta data.

A blood collection device to reduce hemolysis in a peripheral intravenous catheter system may include a distal end. The distal end of the blood collection device may include a male luer adapter, which may include a distal opening. The blood collection device may include a cannula in fluid communication with the male luer adapter. The cannula may include a distal end and a sharp proximal tip. The blood collection device may include an elongated neck disposed between the male luer adapter and the sharp proximal tip. The blood collection device may include a fluid pathway extending from the distal opening through the sharp proximal tip. A diameter of the fluid pathway may be constant. An entire length of the fluid pathway is represented by L, and the diameter of the fluid pathway is represented by D. D4 / L may be equal to or less than a predetermined value.

The invention discloses a degradable extravascular stent, a degradable extravascular stent system and a control method, the degradable extravascular stent system comprises: a main stent covering an artery end, the material density of the main stent being 50-300 mg / cm < 3 >; the side sleeve covers the vein end, the side sleeve and the main support are connected together, the included angle between the side sleeve and the main support is adjustable, the adjusting range of the included angle is 20-70 degrees, the main support and the side sleeve are in an opening state with a complete circumferential shape in the extending direction of the pipe wall, and the side sleeve is connected with the main support in a sleeved mode. After the internal fistula angle is adjusted in an operation, the stent covers an arteriovenous fistula, and after the stent is closed, the two sides of an opening are fixed by interlocking devices; the side sleeve and the main stent are both made of biodegradable polymers, the main stent and the side sleeve carry drugs or do not carry drugs, and the elastic modulus of the biodegradable polymers ranges from 100 MPa to 1000 MPa.

Systems and methods can remove material of interest, including blood clots, from a body region, including but not limited to the circulatory system for the treatment of pulmonary embolism (PE), deep vein thrombosis (DVT), cerebrovascular embolism, and other vascular occlusions.

Tricuspid valve repair devices and associated systems and methods are disclosed herein. A tricuspid valve repair device configured in accordance with embodiments of the present technology can include, for example, a coaptation member configured to be positioned between one or more native leaflets of the tricuspid valve to at least partially fill a space between the native leaflets. The tricuspid valve repair device can further include one or more fixation mechanisms for securing the coaptation member in position between the leaflets. The fixation mechanisms can include clip mechanisms, lock mechanisms, stabilization members, anchors, and / or other structures configured to engage cardiac anatomy local to or remote from the tricuspid valve, such as the native leaflets, the tricuspid valve annulus, the right ventricular outflow tract, the superior vena cava, the inferior vena cava, and so on.

Preferred embodiments relate to devices and methods for performing a lymphovenous bypass procedure. A coupling element is secured to tissue connected to at least one lymphatic channel of a patient and a vein or artery of the patient. An end of the lymphatic channel that extends through the coupling element is inserted into an open end of the vein or artery to deliver lymph fluid from the lymphatic channel into the vein or artery.