79 results about "Vascular access" patented technology

The invention belongs to the field of medical equipment, and provides an ultrasonic-guided automatic blood vessel puncture integrated device which comprises a wireless ultrasonic instrument, a button A and a button B are arranged on one side of the outer surface of the wireless ultrasonic instrument side by side up and down, a bearing support is fixedly installed at the bottom of one side of the wireless ultrasonic instrument, and a movable support is rotatably installed in the bearing support. A fixing groove is formed in the lower bottom face of the movable support, a driving mechanism is arranged in the fixing groove and comprises a micro hydraulic booster, the micro hydraulic booster is arranged in the fixing groove, and an electromagnetic clutch is installed at the output end of one side of the micro hydraulic booster; by means of the collaborative design of the driving mechanism, the puncture mechanism and button control, medical workers do not need to conduct collaborative operation with the two hands, the actions such as puncture needle core propelling and cannula deepening can be achieved by pressing the corresponding buttons, the operation process is simplified, and in the scene of war wound first aid and the like, a vascular access can be rapidly established, time is saved, and the treatment efficiency is improved.

A delivery device for delivering an instrument into a catheter assembly may include a housing having a proximal end, a distal end, and a slot. The delivery device may include a guide feature, which may be disposed within the housing. The guide feature may extend through the slot. The delivery device may include an instrument disposed within the housing and extending through the guide feature. In response to movement of the guide feature along the slot in the distal direction a first distance, a first end of the instrument may be advanced in the distal direction a second distance, which may be greater than the first distance. A second end of the instrument may be stationary with respect to the housing.

An apparatus includes a cart having a vertical adjustment element configured to adjust a distance between the platform and a ground supporting the cart, the cart defining a surface for supporting an arm of the patient. The apparatus includes a manipulation device including a plurality of motors each configured to operably couple to a different one of a needle, a catheter, and a guidewire to selectively advance one or more of the needle, the catheter, and the guidewire, and a robotic arm having a first end mounted to the cart and a second end coupled to the manipulation device, the robotic arm having a plurality of segments joined together via a plurality of joints such that the robotic arm can be moved to position the needle, the catheter, and the guidewire for insertion into a target vessel in the arm.

Exemplary embodiments described herein are directed to a vascular access catheter device with an inline needle, the device having a needle portion that is linearly displaceable relative to a catheter portion, and vice versa, and to methods of performing blood transfer procedures using said device. Retraction of the needle portion relative to the catheter portion allows the catheter of the catheter portion to cover the needle tip during a blood transfer procedure, thereby preventing needle damage to a fistula / graft or peripheral vessel of a patient, as well as possible needle stick injuries to health care workers during removal / disposal of a used device. Because the needle still remains largely within the catheter after retraction, there is no risk of catheter collapse, kinking, etc., during use, which could compromise blood flow during a hemodialysis or other vascular access procedure.

The application relates to the technical field of medical devices, in particular to a balloon for vascular access intervention, which comprises an outer catheter, a cleaning pipe and a telescopic hose, one end of the outer catheter is provided with a guide wire connecting port, the cleaning pipe is arranged on the guide wire connecting port, and a guide head is fixedly connected to the end of the outer catheter far from the guide wire connecting port; medicine is smeared into a medicine applying groove, the medicine in the medicine applying groove will be attached to the inner wall of the blood vessel of a patient after the balloon body is inflated, covers the wound, avoids the elution of the medicine when the balloon body moves, and improves the use rate of the medicine.

The utility model relates to a balloon dilatation catheter for a dialysis vascular access, which belongs to the field of medical instruments and comprises a catheter. The expansion assembly is arranged on the outer side of the catheter and comprises an expansion balloon which is arranged on the outer side of the catheter; the plurality of medicine filling grooves are uniformly formed in the outer side of the dilatation balloon; and the protection assembly is arranged on the outer side of the guide pipe. According to the dialysis vascular access expansion device, through the arranged expansion assembly, the narrow portion of a dialysis vascular access can be expanded, and the narrow portion of the dialysis vascular access can be coated with medicine, so that cell hyperplasia of the dialysis vascular access is reduced, and the number of times of dialysis vascular access expansion needed by a patient is reduced; in this way, the personal safety of a patient can be improved, meanwhile, under the action of the protection assembly, the medicine in the medicine filling groove can be prevented from being added to the non-narrow part of the dialysis vascular access, and therefore the inhibition effect of the medicine on dialysis vascular access cells is improved.

The invention relates to medicine, in particular to infusion therapy, kidney replacement therapy and gravitational blood therapy. The Y-shaped connecting pipe is designed in the form of a Y-shaped tubular pipeline connector with a branch pipe connected at the tail end, the branch pipe is connected to the ends of the pipelines, and at least one clamping and closing device is mounted on each pipeline. A port with a female joint is arranged at the end part of one pipeline, a connector with a male joint is arranged at the end part of the other pipeline, two pipelines can be connected to a catheter port or a puncture needle positioned at the access point of two blood vessels, and one pipeline can be connected to an extracorporeal circulation loop. The present invention can combine multiple passages into a single outflow and a single inflow and connect it to an extracorporeal circuit while also allowing for varying the linear and volumetric flow rate of the delivered liquid, reducing the resistance of the liquid, and automatically regulating the pressure in the pipeline circuit through a second passage point of a single system.

A wearable monitor is configured for early detection of internal bleeding events and particularly hematomas after vascular catheterization including cardiac catheterization. The wearable monitor is placed over an access location following the vascular catheterization procedure and the wearable monitor system periodically runs diagnostic test to detect changes in the tissue around the vascular access location. An emitter device may input an emitter input into the tissue and a detector device may then measure the emitter input after it has passed through the tissue, an emitter output. A computer may receive the data from the detector device and operate a program that determines changes in the tissue and in particular, pooling of blood in the tissue. The emitters may be electrodes that input an electromagnetic input, or an ultrasound emitter that inputs ultrasound sound waves, or a Near IR emitter that emits Near IR electromagnetic radiation.

This document relates to the apparatus and methods used in the minimally invasive creation of arteriovenous fistula (AVF). In particular, the invention relates to the creation of an AVF using catheters and an alignment methodology that is based upon detection of asymmetric electric fields. The invention finds particular application in vascular access (VA) in the hemodialysis (HD) population.

The systems and methods are configured for vascular and / or neurointerventional procedures. The systems and methods allow safe and rapid access, including percutaneous access, to the carotid arteries, as well as cerebral or intracranial arteries, for the introduction of interventional devices, such as to treat disease conditions. The methods and devices may include vascular access and retrograde systems.

The invention relates to the technical field of medical instruments, and provides a blood vessel communication assembly which comprises two puncture pieces used for being communicated with the two ends of a blood vessel respectively, a communication path arranged between the two puncture pieces and a switch arranged on the communication path, and the switch is used for controlling connection and disconnection between the two puncture pieces; the puncture part comprises a needle head part used for puncture, a penetrating channel communicated with the needle head part and an operation part communicated with the penetrating channel, the penetrating channel is used for blood circulation, and the needle head part is coaxially sleeved with an abutting part used for abutting against the inner wall of a blood vessel; the through channel is provided with a control assembly used for controlling the abutting piece to be opened or contracted. The blood vessel hemostasis device has the beneficial effects that the blood supply insufficiency of the blood vessel at the telecentric end is reduced while bleeding of the broken blood vessel is simply and quickly stopped.

Biologic matrices designed to facilitate wound healing and related methods are disclosed. A matrix comprises a three-dimensional, resorbable collagen scaffold derived from a vascularized portion of a perfusion-decellularized mammalian organ or tissue. The scaffold features a porous structure with a plurality of interconnected pores originating from one or more outer surfaces, which are defined by intact vascular pathways of the perfusion decellularized mammalian organ or tissue. The porous configuration substantially enhances the scaffold's effective surface area, making it at least 5 times greater than that of a non-porous scaffold having equivalent outer dimensions. In certain embodiments, the surface area considering the interconnected pores can be 10 times larger, 15 times larger, or more than the non-porous scaffold of equivalent outer dimensions. The density of the scaffold can range from 2 milligrams per cubic centimeter to 20 milligrams per cubic centimeter, inclusive, further optimizing the matrix's performance for wound healing applications.

Biologic matrices designed to facilitate wound healing and related methods are disclosed. A matrix comprises a three-dimensional, resorbable collagen scaffold derived from a vascularized portion of a perfusion-decellularized mammalian organ or tissue. The scaffold features a porous structure with a plurality of interconnected pores originating from one or more outer surfaces, which are defined by intact vascular pathways of the perfusion decellularized mammalian organ or tissue. The porous configuration substantially enhances the scaffold's effective surface area, making it at least 5 times greater than that of a non-porous scaffold having equivalent outer dimensions. In certain embodiments, the surface area considering the interconnected pores can be 10 times larger, 15 times larger, or more than the non-porous scaffold of equivalent outer dimensions. The density of the scaffold can range from 2 milligrams per cubic centimeter to 20 milligrams per cubic centimeter, inclusive, further optimizing the matrix's performance for wound healing applications.

The present disclosure relates to a vascular sealing device. The vascular sealing device includes a guidewire, a sheath member, and an occlusion plug. The guidewire is deployable into a blood vessel through a vascular access point of a subject. The sheath member defines a hollow cavity along a length of the sheath member. The hollow cavity allows insertion of the guidewire therein. The sheath member is deployable from the guidewire and is configured to be positioned in a lumen of the blood vessel. The occlusion plug is deployable from the sheath member and positioned at the lumen of the blood vessel. The occlusion plug selectively operates in an inflated configuration and a deflated configuration to apply a controlled pressure to an interior portion of the blood vessel and an exterior portion of the blood vessel at the vascular access point to occlude the vascular access point of the blood vessel.

A medical device system includes a medical device, an elongate shaft (12), a first sheath (30), and a second sheath (32). The elongate shaft may couple with the medical device and extend proximally from the medical device. The first sheath may have an elongate tube (31) configured to expand from a first inner diameter to a second inner diameter. The first sheath and the second sheath may longitudinally advance over the elongate shaft and a distal end (58) of the second sheath may advance through the lumen and extend distally beyond a distal end (38) of the first elongate tube into a vascular access site. The system may include a closure device configured to close the vascular access site around the second sheath. The medical device may include a blood pump (50) configured to pump blood from a ventricle of a heart of a patient to vasculature of the patient.

A vascular access catheter includes an elongated tubular catheter body enclosing an internal lumen. The catheter body includes a catheter tip ending with a catheter distal end and including a distal rim at the catheter distal end that encircles an opening open to the internal lumen. The distal rim includes a front rim portion spanning a top portion of the opening and a beveled rim portion spanning a bottom portion of the opening and beveled proximally away from the front rim portion relative to a longitudinal axis of the catheter body. The vascular access catheter can be provided in a vascular access kit that also includes an access needle having a hollow needle body and a beveled tip ending with a sharp needle rim.

The invention relates to the technical field of medical assistors, and discloses an external protection and compression assistor for a vascular access of a dialysis patient, the external protection and compression assistor comprises an outer protection shell, a structural groove is formed in the outer protection shell, and a gradient pressure reduction mechanism is arranged in the structural groove. According to the external protection and compression assist device for the vascular access of the dialysis patient, a pressing block is pressed to drive a rack to press downwards, kinetic energy is transmitted to a large gear and an escape wheel through a first gear, a rotating shaft and a small gear, and meanwhile energy storage is completed through a vortex curling strip; after the touch type clamping block is unlocked, the vortex curling hair strip releases energy, the continuous rotating motion is converted into intermittent stepping rotation through periodic meshing of the escapement fork and the escapement wheel, the first rack drives the pressing plate to return upwards extremely slowly in a sectional mode, it can be guaranteed that the pressure is gradually decreased in a stepped mode along with time, and therefore the effect that the pressure is gradually decreased is achieved. The operation habit of slow hand loosening during manual compression is simulated, effective hemostasis of a puncture point is ensured through initial high pressure, and the internal fistula tremor feeling is maintained through subsequent gradient pressure reduction.

A dressing for protecting a vascular access catheter skin entry site including a foundation dressing module and a cover dressing module. The foundation dressing module includes a single or multi-part frame defining an aperture. The frame has a foundation dressing skin-facing surface and a foundation dressing opposing surface in opposition to the foundation dressing skin-facing surface. The cover dressing module includes a cover dressing skin-facing surface and a cover dressing non-skin facing surface, a hydroscopic pad on the cover dressing skin-facing surface adapted to area-fill the aperture. The cover dressing skin-facing surface is configured to be superimposable onto the foundation dressing opposing surface bringing the hydroscopic pad into direct fluid communication with a skin entry site of the vascular access catheter.

The invention belongs to the technical field of vascular access assessment, and relates to a vascular access assessment system and method based on machine learning, and the system employs a layered architecture, integrates follow-up management, postoperative maturity assessment and a machine learning decision support engine, achieves AVF maturity risk grading through multi-parameter adaptive threshold weighted scoring, and improves the assessment accuracy. A personalized training scheme is generated in combination with similar case matching, continuous self-learning is realized based on expert feedback, the problems of subjective evaluation, low efficiency, scheme homogenization and the like in internal arteriovenous fistula management are solved, patient data can be automatically processed, and structured reports and visual charts can be generated in batches; the method improves evaluation accuracy and clinical efficiency, improves patient prognosis, provides data support for medical quality control and scientific research, and is suitable for AVF full-cycle management of end-stage nephropathy hemodialysis patients.

The medical dialysis sickbed with the hemodialysis function comprises a sickbed body and an arm fixing device, the arm fixing device comprises an elbow joint fixing assembly used for fixing an elbow joint of a patient and a wrist joint fixing assembly used for fixing a wrist joint of the patient, and the elbow joint fixing assembly is provided with an adsorption part; the adsorption part is used for adsorbing the skin near the elbow joint of a patient, the wrist joint fixing assembly is provided with the fixing part, the fixing part is used for fixing the palm of the patient, during hemodialysis, the palm and the elbow joint of the patient are fixed to facilitate puncture and guarantee the stability of the dialysis process, and in the dialysis process, the patient needs to keep a relatively static state; the fixing palm and the elbow joint can effectively reduce movement of the arm, the stability and the safety of the dialysis process are guaranteed, and it is guaranteed that dialysis treatment can be conducted smoothly.

Methods and devices are configured for neurointerventional procedures. The methods and devices enable safe and rapid access to the cerebral or intracranial arteries for the introduction of interventional devices such as to treat stroke and / or other disease conditions. The methods and devices include a vascular access and retrograde flow system that can be used safely and rapidly in the neurointerventional procedures.

A wearable monitor is configured for early detection of internal bleeding events and particularly hematomas after vascular catheterization including cardiac catheterization. The wearable monitor is placed over an access location following the vascular catheterization procedure and the wearable monitor system periodically runs diagnostic test to detect changes in the tissue around the vascular access location. An emitter device may input an emitter input into the tissue and a detector device may then measure the emitter input after it has passed through the tissue, an emitter output. A computer may receive the data from the detector device and operate a program that determines changes in the tissue and in particular, pooling of blood in the tissue. The emitters may be electrodes that input an electromagnetic input, or an ultrasound emitter that inputs ultrasound sound waves, or a Near IR emitter that emits Near IR electromagnetic radiation.

This invention provides a method and apparatus for reconstructing chronically totally occluded coronary arteries (CTOs). The method includes: obtaining multiple first markers on a forward angiographic image of the CTO during interventional treatment, each first marker corresponding to the location of multiple markers; obtaining multiple second markers on a reverse angiographic image of the CTO, each second marker corresponding to the location of multiple markers; and reconstructing the occluded segment of the coronary artery between the proximal and distal segments based on the composite image to connect the proximal and distal segments, thereby obtaining a reconstructed angiographic image containing the intact lesion. This invention effectively solves the problems of requiring an additional vascular access and bidirectional angiography in interventional treatment of CTOs in related technologies, reducing the risks and surgical costs associated with these technologies.

The internal arteriovenous fistula postoperative exerciser comprises an arm support and an exercise ball, the arm support is a cube in the shape of a right trapezoid, an arm positioning groove is formed in the arm support in a sunken mode, and the arm positioning groove comprises an inclined part and a horizontal part; the exercise ball is provided with a mounting hole, the fixing shaft penetrates through the mounting hole of the exercise ball, and the two ends of the fixing shaft are connected with the arm support, so that the exercise ball is positioned in the horizontal part of the arm positioning groove; during use, the arm of a patient is located in the inclined part of the arm positioning groove, the palm of the patient is located in the horizontal part of the arm positioning groove, and the palm center of the palm of the patient faces upwards and just holds the exercise ball. According to the utility model, the exercise enthusiasm of a patient can be improved, the arm blood circulation effect is better, the patient can complete the exercise task according to quality and quantity, the exercise effect is ensured, the arm blood circulation is promoted, the purposes of expanding and thickening the vein wall are achieved, and the vascular access can meet the use requirement during hemodialysis as soon as possible.

The invention relates to a vascular access system with a secondary catheter with enhanced proximal retention feature. An instrument delivery device for introducing an instrument into a vascular system of a patient via a catheter assembly including a main catheter is provided. The instrument delivery device includes: an extension tube including a proximal end, a distal end, and an outer tube wall defining 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 includes a proximal end and a distal end, the instrument movable within the tube lumen to an advanced position in which the distal end of the instrument extends into or beyond the distal tip of the main tube. The proximal end of the instrument includes a retention feature having a first outer diameter greater than a second outer diameter of the distal end of the instrument, the retention feature including a reinforcing structure that prevents deformation of the retention feature.

The application discloses a teaching type multi-scene hemodialysis blood vessel access simulation model and method, relates to the technical field of teaching model establishment, and comprises an arm body, replaceable blood vessel access, blood flow simulation, fixed support, ultrasonic adaptation and operation feedback module; the arm body simulates the shape and material of the forearm of a human body, the replaceable module contains normal and various abnormal internal fistula types, the blood flow simulation module adjusts blood flow speed, the fixed support module is adapted to different body positions, the ultrasonic adaptation module guarantees development effect, and the operation feedback module real-time prompts puncture results. The application meets the layered training demand through multi-scene adaptation, restores clinical operation experience through high simulation design, provides a safe and controllable training environment, provides real-time feedback to help skill improvement, takes into account the practicability and convenience of teaching, effectively improves the puncture success rate and self-confidence, and reduces clinical risk.

The invention discloses an intelligent compression training system and method for promoting maturation of internal fistula. The method comprises the following steps: acquiring case data of a user; analyzing the user case data to a preset compression training model, and determining a training plan; generating a compression scheme corresponding to the current training stage according to the training plan; controlling the intelligent compression training device to perform compression training based on the compression scheme; in the training process, guiding training is conducted on the user according to the collected grip strength value of the user, difference value calculation is conducted on the grip strength value of the user and a corresponding preset grip strength threshold value, and a grip strength difference value is determined; if the grip strength difference value is within the preset grip strength difference value interval, no processing is carried out; on the contrary, according to the grip strength difference value, compression scheme adjustment and early warning reminding are carried out. Through intelligent compression control and real-time monitoring feedback, scientificity and effectiveness of internal fistula training are improved, maturation of internal arteriovenous fistula can be effectively promoted, the quality of a vascular access of a dialysis patient is improved, and the service life of the vascular access of the dialysis patient is prolonged.

A multi-lumen vascular access catheter (1) comprises a catheter body (10) with a plurality of lumen, and a plurality of extension tubes (30) each extending from an interface (20) with the catheter body, each extension tube being in fluid communication with one of the plurality of lumen of the catheter body. The extension tubes have a circumferential cross-section comprising a first portion formed of transparent material and a second portion formed of a coloured material, providing axially extending stripes, providing unimpeded viewing of fluids inside the extension tube whilst also ensuring easy identification.

The invention belongs to the field of functional medical catheter preparation, and particularly relates to an antibacterial and anticoagulant dialysis catheter with a sodium alginate-graphene oxide coating and a preparation method of the antibacterial and anticoagulant dialysis catheter. The preparation method comprises the following steps: (1) mixing a graphene oxide dispersion liquid with a sodium alginate solution, then adding a water / alcohol mixed solvent, and then carrying out ultrasonic dispersion treatment to obtain a mixed solution; (2) performing plasma pretreatment on the polyurethane dialysis catheter to obtain a pretreated catheter; (3) immersing the pretreated conduit into the mixed solution, and after dip-coating is completed, sequentially standing and drying to obtain a primary gel layer conduit; and (4) immersing the primary gel layer catheter into a cross-linking solution, and then sequentially cleaning, gradient heating and curing. Efficient antibiosis and anticoagulation are achieved through the synergistic effect of materials, the coating is firm in combination and excellent in biocompatibility, the problems of thrombus formation, infection and the like of an existing dialysis catheter can be solved, and the coating is suitable for hemodialysis vascular access.