76 results about "Vascular access port" patented technology

Needle-guiding systems and methods can facilitate establishing vascular access with a nonmagnetic needle. For example, a method of a needle-guiding system can include detecting and registering registration marks about a patient by patient-facing cameras of an alternative reality (“AR”) device, the AR device thereby establishing its location and orientation relative to a target area of the patient. The method can also include anchoring ultrasound images of the target area as viewed through a display screen of the AR device, the ultrasound images anchored about the patient relative to either an instant or previous location and orientation of the ultrasound probe; and providing an instant virtual needle trajectory of the needle as viewed through the display screen of the AR device, thereby indicating to a clinician whether the needle is properly oriented for establishing vascular access to a target vessel of the ultrasound images.

Needle-guiding systems and methods can facilitate establishing vascular access with a nonmagnetic needle. For example, a method of a needle-guiding system can include detecting and registering registration marks about a patient by patient-facing cameras of an alternative reality ("AR") device, the AR device thereby establishing its location and orientation relative to a target area of the patient. The method can also include anchoring ultrasound images of the target area as viewed through a display screen of the AR device, the ultrasound images anchored about the patient relative to either an instant or previous location and orientation of the ultrasound probe; and providing an instant virtual needle trajectory of the needle as viewed through the display screen of the AR device, thereby indicating to a clinician whether the needle is properly oriented for establishing vascular access to a target vessel of the ultrasound images.

The invention discloses a vascular access lesion recognition method and system based on target detection, and relates to the technical field of medical image processing, and the method comprises the steps: carrying out the cardiac cycle phase division according to an electrocardiogram signal, calculating a displacement vector field between adjacent frames of a blood vessel DSA image sequence, constructing a motion compensation model, and generating a stable DSA sequence; segmenting the stable DSA sequence into binary vascular mask images through a U-Net segmentation model, tracking motion displacement of contrast agent particles in continuous frames by using a particle image velocimetry algorithm, generating a blood flow velocity vector field, and calculating an eddy current intensity feature map; and carrying out channel cascading on the binarized blood vessel mask image and the vortex intensity feature map to generate a blood vessel feature tensor, and generating a lesion detection result by improving a YOLOv7 model. According to the method, the accuracy, robustness and clinical applicability of vascular disease recognition are improved, and a technical closed loop from multi-modal data processing to automatic diagnosis report generation is realized.

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 method of performing a neurovascular procedure includes providing an assembly including a guidewire having a guidewire hub, an access catheter having an access catheter hub, and a guide catheter having a guide catheter hub. The method includes coupling the guidewire hub to a first hub adapter, coupling the access catheter hub to a second hub adapter, and coupling the guide catheter hub to a third hub adapter. Each of the first hub adapter, the second hub adapter and the third hub adapter is movably carried by a support table. The method includes driving the assembly in response to movement of each of the first hub adapter, the second hub adapter and the third hub adapter along the support table until the assembly is positioned to achieve supra-aortic vessel access.

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.

An apparatus for providing access to a patient's vasculature according to one aspect of the present invention comprises a dilator having a distal tip, a proximal end and a main body extending therebetween. The dilator includes a first lumen extending from the proximal end to the 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 hemostasis valve in fluid communication with the first lumen at the proximal end of the dilator and a second hemostasis valve in fluid communication with the second lumen at the proximal end of the dilator. A retrograde guidewire is provided positionable within the first lumen of the dilator for advancement therein from the proximal end toward the distal tip and adapted to project therefrom by a first preselected distance. A deflection microcatheter is also provided positionable within the second lumen for advancement therein from the proximal end toward the side port and adapted to project therefrom by a second preselected distance and an antegrade guidewire positionable within a lumen of the deflection microcatheter for advancement therein from the proximal end toward the side port and adapted to project therefrom by a third preselected distance.

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.

Conductive films comprising heparin modified polymers are provided. The heparin-modified polymer includes heparin covalently bound to a beta-substituted monomer having a conjugated backbone that is copolymerized with a non-functionalized peer thereof. The heparin-modified polymer on the conductive film may be prepared by copolymerizing a beta-substituted monomer with a non-functionalized monomer to form a polymer on the conductive film; reacting the polymer with N, N '-dicyclohexylcarbodiimide (DCC) and acetic acid to form an anhydride of the polymer on the conductive film; the anhydride is then reacted with the heparin to form a heparin modified polymer on the conductive film. A medical device having a coating comprising the conductive film is also described.

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.

The present invention discloses an intravascular endoscopic imaging system based on magnetic navigation, wherein the endoscopic imaging system comprises five parts: a magnetic control drive system, a robotic arm system, a remote control system, a magnetic navigation catheter, and an endoscopic imaging system, wherein: the magnetic control drive system is installed at the end of the robotic arm system and is connected to the end effector of the robotic arm system; the magnetic navigation catheter is connected to the magnetic control drive system via magnetic force and serves as a controlled object; the endoscopic imaging system is connected to the magnetic navigation catheter; the remote control system is connected to a computer via remote communication and is used to precisely control the position and posture of the robotic arm system and simultaneously manipulate the magnetic control drive system. The present invention effectively improves the flexibility and manipulation accuracy of the catheter in complex vascular pathways, significantly reduces the difficulty of operation for doctors, and enhances the safety of intravascular diagnosis and treatment. It is particularly suitable for narrow or complex-shaped vascular pathways.

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.

The utility model discloses a bedside blood purification pipeline fixing band which is characterized in that a shock insulator is arranged in the middle of a binding band and located on the outer side surface, two pipeline fixing assemblies are symmetrically arranged on the outer side surface of the shock insulator, foam is arranged in the middle of the outer side surface of a single catheter fixing band, and an anti-skid rubber layer is attached to the outer surface of the foam. The fixing device is reasonable in structure, bedside blood purification pipelines can be respectively fixed in the two single-catheter fixing bands according to the artery end and the vein end, when the position of a certain catheter needs to be adjusted, only the corresponding single-catheter fixing band needs to be opened, operation is convenient, the fixing device can be suitable for pipelines with different thicknesses, and meanwhile the fixing device can be used for fixing the pipelines according to the vascular access position of a patient. The blood purification pipeline is fixed to a bedrail or the upper limbs or the lower limbs of a patient through the elastic bandage, use is more convenient, the foam is arranged in the middle of the single catheter fixing band, the surface of the foam is made of an anti-skid rubber material, the pipeline can be prevented from sliding, fixation is firmer, one person can use the blood purification pipeline, and cross infection can be avoided.

To provide an access port capable of suppressing or reducing the occurrence of coring, and also provide a vascular access device capable of achieving that.SOLUTION: An access port 92 comprises a vascular access part 921 and a surrounding part 926 that surrounds the periphery of the vascular access part 921. The tensile modulus of the vascular access part 921 is greater than the tensile modulus of the surrounding part 926. Accordingly, when a needle is inserted into the vascular access part 921, the frequency of occurrence of elastomer fragments that may be produced by scraping of the vascular access part 921 can be reduced. That is, the occurrence of coring can be suppressed or reduced. Meanwhile, a vascular access device 9 comprises the access port 92 and an artificial blood vessel 91.SELECTED DRAWING: Figure 1A

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

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 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.

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.

The utility model belongs to the technical field of medical instruments, and discloses a thrombus blockage removing device which comprises a supporting tube, a front end assembly, a filter screen assembly and a handle assembly, the front end assembly is fixedly connected with the filter screen assembly, the tail end of the supporting tube is fixedly connected with the front end of the handle assembly, and the front end assembly is fixedly installed at the front end of the supporting tube. The filter screen assembly is fixedly mounted on the supporting pipe and at the rear end of the front end assembly; the front end assembly is provided with a balloon, the balloon wraps a supporting tube, a vent hole is formed in the position, wrapped by the balloon, of the supporting tube and serves as a channel for providing gas for the balloon, the balloon is expanded or contracted, and the expanded balloon is used for blocking a blood vessel access. The head end of the filter screen is provided with the balloon, movement of small thrombus generated during thrombus breaking can be blocked, and the thrombus is completely removed through the suction catheter. Residues on blood vessel walls are reduced, the operation time is shortened, and the operation efficiency is improved.