51 results about "Vascular access port" patented technology

A vascular access instrument advancement device may include a housing and an extension tube extending through the housing. The extension tube may extend through the housing. The extension tube may include a first lumen and a second lumen. A blood collection pathway may extend through the first lumen. A wedge may be disposed within the housing and the second lumen of the extension tube. A pair of opposing pinch members may be configured to pinch the extension tube. The pair of opposing pinch members may be disposed within the housing proximal to the wedge and configured to move along the extension tube with the housing. An instrument may extend distally from the wedge. The instrument may be disposed within the second lumen. In response to moving the housing distally along the extension tube, the pair of opposing pinch members push the wedge distally and the instrument is advanced distally.

A vein simulator system can be used by clinicians to improve their proficiency in placing catheters such as PIVCs or in otherwise accessing a vasculature. A vein simulator system can include a simulated portion of a body, such as a simulated human arm, that includes at least one simulated vein. The vein simulator system can also include a control system, one or more sensors and one or more feedback components. The control system can leverage the one or more sensors to generate feedback during a clinician's attempt to place a catheter and can output the feedback via the feedback components, either during or after the attempt.

A method of performing a neurovascular procedure includes the steps of providing an access assembly comprising a guidewire, access catheter and guide catheter; coupling the access assembly to a robotic drive system; and driving the access assembly to achieve supra-aortic vessel access. The guide wire and the access catheter are decoupled from the access assembly. A procedure assembly includes at least a guidewire and a procedure catheter. The procedure assembly is coupled to the robotic drive system; and used to perform a neurovascular procedure.

Disclosed is a vascular access port selectively changeable subcutaneously from delivery configuration to deployed configuration. The vascular access port includes a port body and a port body extension being partly or wholly disengaged in the delivery configuration, and fixedly connected to form a unified structure of the vascular access port, greater in volume than the port body, in the deployed configuration. Methods and kits for deploying the vascular access port in a body of a subject are also disclosed.

Disclosed herein are vascular access systems with dilator locking mechanisms, and associated devices and methods. In some embodiments, the dilator locking mechanisms include a first cap coupled to a dilator component and a second cap coupled to the vascular access system. The first cap can include one or more locking members. The second cap can include one or more locking features, each configured to be releasably coupled to one of the locking members. In operation, the dilator component can be inserted into the vascular access system, and at least a portion of one or more of the locking members can be aligned with and inserted into the corresponding locking feature to, e.g., couple the first cap and the second cap. The interaction between first and second caps when coupled can at least partially prevent the dilator from moving relative to the vascular access system.

A blood collection system configured to be connected to a set of tubes providing vascular access to a patient, wherein the system has an access device connected to the set of tubes, the access device having a blood collection tube holder and a non-patient needle at least partially located within the blood collection tube holder. A blood collection system further having a syringe, the syringe having a plunger rod, a stopper, and a distal interface, and a cap assembly that can be coupled to the distal interface of the syringe. The cap assembly has a cap body and a bidirectional valve, the bidirectional valve being in fluid communication with a discharge chamber formed within the cap body.

The present application relates to a TAVR teaching model based on blood flow simulation and multi-modal image fusion and use method. The model comprises a simulated thoracic and abdominal cavity with a built-in heart wave beat simulation part that drives fluid to generate pulsatile blood flow, a simulated thoracic and abdominal body with pre-set vascular access, a bionic heart assembly with structures such as a ventricular cavity, a pathological valve module that can be detachably fitted to the aortic valve ring and contains a pressure sensor array and simulated calcification, a coronary circulation monitoring module that monitors the perfusion state of the coronary artery opening, a virtual fluoroscopy positioning module that generates real-time fluoroscopy images, and a central control console that electrically cooperates with each module. The scheme simulates the tactile sensation of calcification through the pathological valve module, the heart wave beat simulation part reproduces the physiological pressure difference with a closed loop blood flow, realizes image navigation training with non-radiation virtual fluoroscopy, integrates real-time simulation of complications with coronary monitoring and annulus pressure sensing, and solves the problems of existing models such as distorted hand feeling, inaccurate dynamics, dependence on radiation, and lack of complication training.

A vascular access system and method for ultrasound monitoring and an integrated sensor array are provided. The vascular access system may include a vascular access device, an ultrasound assembly, a fixation dressing, a base unit, and one or more monitoring devices. The ultrasound assembly may include an ultrasound probe that can be positioned on a catheter when inserted into the patient's vascular system and may be configured to allow integration of one or more sensors. Images from the ultrasound probe and readings from one or more sensors can be processed to generate parameters representing the state, events, or other information about the catheter. Display content, including images and parameters, may be provided to the monitoring device.

The invention discloses a vascular access monitoring system and method based on electrical tomography, and belongs to the technical field of medical monitoring. The method comprises the following steps: generating an equipment native sensitivity matrix corresponding to a physical structure of a flexible sensing interface unit on line; in response to one-time standardized physical stimulation applied to the target monitoring area, collecting multi-frame boundary voltage to obtain dynamic response of the boundary voltage; based on the dynamic response of the device native sensitivity matrix and the boundary voltage, an inverse problem is solved to generate a binary blood vessel position mask representing the actual position of the blood vessel; collecting boundary voltage monitored in real time; and based on the blood vessel position mask, performing targeted analysis on a conductivity distribution image reconstructed according to the boundary voltage monitored in real time so as to monitor the blood vessel state. According to the method, the problem of model mismatching caused by individual anatomical differences is solved, and high-reliability individual monitoring is realized.

The invention provides a medical image processing method and a medical image processing device, which can pre-construct a three-dimensional target path image in an occluded blood vessel and solve the technical blind area that the dissection path of a far-end blood vessel cannot be developed due to the fact that a contrast agent cannot pass through the occluded blood vessel in traditional DSA radiography. Moreover, the three-dimensional target path image and a three-dimensional angiography image obtained in the operation can be registered and fused based on a preset mark point to obtain a fused image, and the fused image and the two-dimensional perspective image of the focus area of the patient are registered and fused to obtain a fused image. Accurate space alignment and dynamic superposition of the preoperative three-dimensional target path image, the intraoperative three-dimensional angiography image and the intraoperative two-dimensional perspective image are achieved, a whole-process visible accurate space positioning reference is provided for instrument pushing and vascular access selection of an operator, and the accuracy of surgical operation is improved.

The present disclosure relates to a multi-use catheter assembly (10) for vascular access comprising valve assemblies including a valve assembly (28) and a valve actuator assembly (30) with enhanced features and abilities to selectively allow flow of fluids through the catheter assembly (10) while preventing leakage of fluids from the proximal end of the catheter assembly (10).

A smart wing vascular access catheter / cannula (VAC) assembly including a stabilization platform configured to hold a VAC in a fixed position relative to tissue of a patient, where the stabilization platform is positioned in between the VAC and the tissue of the patient, a battery mechanically supported by the stabilization platform, a microcontroller mechanically supported by the stabilization platform, a sensor mechanically supported by the stabilization platform, where the sensor configured to sense a physical characteristic of the tissue of the patient and produce sensed data representing the physical characteristic of tissue of the patient, and a smart wing activation device configured to activate the battery to supply electrical power to the microcontroller in response to the smart wing VAC being released from packaging, or a switch on the smart wing VAC being triggered based on relative movement between the VAC and the stabilization platform.

An extension set for introducing an instrument into a patient's vascular system via a vascular access device including a primary catheter is provided. The extension set includes an extension tube comprising a proximal end, a distal end, and an outer tube wall that defines a tube lumen and a distal connector positioned at the distal end of the extension tube. An instrument is disposed within the tube lumen and comprises a proximal end and a distal end, the instrument movable within the tube lumen to an advanced position where the distal end of the instrument extends into the primary catheter or beyond a distal tip thereof. The proximal end of the instrument comprises a retaining feature having a first outer diameter greater than a second outer diameter of the distal end of the instrument, the retaining feature comprising a reinforcing structure that prevents deformation of the retaining feature.

A non-integrated vascular access system includes a connector having a distal port configured to be coupled to a hub of a catheter, a proximal port, a first lumen extending between the distal and proximal ports and in fluid communication with a second lumen defined by the catheter when the distal port is coupled to the hub, a side port arranged in the connector between the proximal and distal couplers, with the side port configured to be in fluid communication with the first lumen, and a fluid conduit having a proximal end coupled to the side port and a distal end, with the fluid conduit in fluid communication with the side port and configured to extend distally from the connector. The system includes a stabilization portion connected to the connector and configured to contact a patient, and a stabilization anchor platform spaced from the connector and positioned along the fluid conduit.

An instrument advancement device may include a housing comprising a distal end and a proximal end; an instrument disposed within the housing; an advancement element, wherein in response to movement of the advancement element with respect to the housing, the instrument is configured to advance distal to the distal end of the housing, and a blood sample collection tube inserted into the distal end of the housing, wherein the blood sample collection tube is configured to receive a small volume blood sample.

This invention provides a bedside hemofiltration method and system for elderly critically ill patients, comprising: analyzing the correlation between transmembrane pressure changes and venous pressure fluctuations under the control of vascular access type and puncture angle, based on a dynamic trend description, and simultaneously evaluating the corrective effect of signal compensation mechanisms on data accuracy to obtain a set of parameter correlation strengths; if some values ​​in the parameter correlation strength set exceed a preset threshold, then combining monitoring data on access infection risk and fluctuations in signal transmission distance, determining whether there is a chain reaction caused by access abnormality, and obtaining an abnormal chain reaction identifier; for the abnormal chain reaction identifier, determining the degree of danger of the abnormality to the overall system by analyzing the matching degree between access establishment time and attenuation frequency range, and obtaining a danger level classification result.

To provide an access port capable of reducing or preventing the progress of downgrowth, a method of manufacturing the same, and a vascular access device. It is also an object of the present invention to provide a catheter cuff and a catheter capable of doing so.SOLUTION: The access port 92 includes a vascular access unit 921 including a first surface 923 to be pierced with a needle and a second surface 924 from which the needle protrudes, and a peripheral portion 926 surrounding a periphery of the vascular access unit 921, the vascular access unit 921 contains an elastomer, and the peripheral portion 926 includes a porous body having communication holes. On the other hand, the catheter cuff includes a porous body having communication holes.SELECTED DRAWING: Figure 1A

Systems and methods for collecting and connecting vascular access data throughout the continuity of care of a vascular access are provided. A patient's historic vascular access data can be stored and made accessible during subsequent attempts to access the patient's vasculature. Additional vascular access data can be generated and stored during the subsequent attempts to access the patient's vasculature. By collecting and connecting the vascular access data, the vascular access data can enable a clinician to be more successful throughout the continuity of care of a vascular access.

A catheter system may include a catheter adapter, which may include a distal end, a proximal end, and a lumen extending through the distal end and the proximal end. The catheter system may include a connector coupled to the proximal end of the catheter adapter. The connector may include a T-connector. The catheter system may include a connector support device, which may be wedge-shaped to support the connector at an insertion angle.

The invention belongs to the technical field of vascular access catheterization evaluation, and discloses an intelligent evaluation method and device before vascular access catheterization and a storage medium, and the method comprises the steps: firstly obtaining medical data of three features of a patient's treatment scheme, a vascular condition and a host risk, and constructing a comprehensive feature vector through numeralization and standardization processing; inputting the adaptive probability vector into a pre-trained multi-classification gradient lifting decision tree model to obtain an initial adaptive probability vector and performing probability calibration; correcting the calibrated probability based on a clinical rule set containing a hard constraint rule and a soft penalty rule, and generating a final recommendation probability vector; and finally, outputting a recommendation list sorted according to the probability and key feature contribution information. Quantitative and accurate evaluation of the vascular access is achieved, selection deviation caused by experience dependence is avoided, complication risks are reduced, clinical decision-making efficiency and safety are improved, the decision-making process is transparent and explainable, and clinical practical application requirements are met.

A method of performing a neurovascular procedure includes the steps of providing an access assembly comprising a guidewire, access catheter and guide catheter; coupling the access assembly to a robotic drive system; and driving the access assembly to achieve supra-aortic vessel access. The guide wire and the access catheter are decoupled from the access assembly. A procedure assembly includes at least a guidewire and a procedure catheter. The procedure assembly is coupled to the robotic drive system; and used to perform a neurovascular procedure.

This disclosure relates to a vascular access device advancement device, which may include a housing and an extension tube extending through the housing. The extension tube may include a first lumen and a second lumen. A blood collection path may extend through the first lumen. A wedge may be disposed within the housing and the second lumen of the extension tube. A pair of opposing clamping members may be configured to clamp the extension tube. The pair of opposing clamping members may be disposed proximally to the wedge within the housing and configured to move along the extension tube with the housing. A device may extend distally from the wedge. The device may be disposed within the second lumen. In response to distal movement of the housing along the extension tube, the pair of opposing clamping members distally push the wedge, and the device is advanced distally.

The invention relates to a catheter ablation device for delivery of energy (such as microwave energy) via a radiating antenna to a selected region of tissue, the device having an elongated catheter with an outer sheath, configured to allow flow of fluid along the catheter to exit through one or more orifices adjacent to the antenna. The device includes an impedance monitoring system having two electrodes arranged respectively inside and outside said catheter sheath, the impedance monitoring system including an electric circuit incorporating an ionic conductivity path through said fluid. The device is introduced into a blood vessel and the invention allows monitoring of changes in the size of the blood vessel during an ablation procedure, as it can be used to measure the impedance of an electrical circuit including a blood path in the blood vessel in the region of the ablation, the measured impedance providing a measure of vascular calibre.

An apparatus for providing access to a patient's vasculature comprises a dilator having a first lumen extending from a proximal end to a distal tip and a second lumen extending in parallel to the first lumen between the proximal end and a side port provided in the main body spaced proximal to the distal tip by a distance. The apparatus further comprises a first and second hemostasis valves in fluid communication with the proximal ends of the first and second lumens, respectively. A retrograde guide wire is provided positionable within the first lumen of the dilator and adapted to project from the distal tip by a first preselected distance. A deflection microcatheter is also provided positionable within the second lumen and adapted to project from the side port by a second preselected distance and an antegrade guide wire positionable within a lumen of the deflection microcatheter and adapted to project from the side port by a third preselected distance.

The present invention relates to spring-based devices, systems, and methods to facilitate vascular access. A catheter system can include a catheter assembly, which can include a catheter adapter. The catheter adapter can include a distal end, a proximal end, and a lumen extending through the distal end of the catheter adapter and the proximal end of the catheter adapter. The catheter assembly can include a catheter, which can extend distally from the distal end of the catheter adapter. The catheter system can include a device extending through a distal opening of the catheter. The device can include a helical spring.

A vascular access system and method for ultrasound monitoring are provided. The vascular access system may include a vascular access device, an ultrasound assembly, a fixation dressing, a base unit, and one or more monitoring devices. The ultrasound assembly may include an ultrasound probe that can be positioned on a catheter while it is inserted into the patient's vascular system. Images from the ultrasound probe can be processed to generate parameters representing the state, events, or other information about the catheter. Display content, including images and parameters, can be provided to the monitoring device.

The application discloses an aorta multi-ball shock wave guide tube and relates to the technical field of medical devices. The aorta multi-ball shock wave guide tube comprises a tail seat, the tail seat is connected with an adapter through a cable, one end of the tail seat is fixed with a stress tube, the other end of the stress tube is fixed with a tube body, one side of the tube body is fixed with a first balloon, the other end of the tube body is fixed with a second balloon, the other end of the second balloon is fixed with a frame body, a frame groove is formed in the middle of the frame body, a through groove is formed in one end of the frame groove, a sliding groove is formed in the other end of the through groove, placing grooves are formed in the two ends of the sliding groove, receiving grooves are formed in one side of the two placing grooves, and a connecting structure is arranged on the inner wall of the frame groove. When medical staff gradually inserts the guide tube along a blood vessel channel, the aorta multi-ball shock wave guide tube has the effects of insertion buffering, automatic supporting and automatic scraping.

This invention relates to the field of medical device technology and discloses an intelligent puncture guidance device for vascular access clinics, comprising a body, a fixing component fixedly installed at the bottom of the body, a support component extending to the front of the body on the inner side of the body, a display component on the right side of the body, a robotic arm fixedly installed at the top of the body, a mounting column fixedly installed at the other end of the robotic arm, a guide component extending downwards from the outer side of the mounting column, a moving mechanism extending outwards from the inner side of the fixing component, and an imaging mechanism at the bottom of the mounting column. This intelligent puncture guidance device for vascular access clinics, by setting the fixing component and the moving mechanism, achieves the purpose of facilitating device movement with a movable structure, and by setting the imaging mechanism and the mounting mechanism, facilitates the disassembly of the vascular fluoroscopy device.