118 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.

The invention relates to the technical field of medical fixing equipment, and discloses artificial liver treatment filter pipeline adjustable fixing equipment which comprises a fixing box, an alignment groove is formed in the middle of the front end of the fixing box, a connecting rope is fixedly installed on the upper surface of the front end of the fixing box, and a dustproof cover is fixedly installed at the end, away from the fixing box, of the connecting rope. An alignment block is fixedly installed on the lower surface of the dustproof cover, a limiting rod is movably installed in the fixing box, the limiting rod is movably sleeved with a clamping spring, a clamping plate is fixedly installed at the inner end of the limiting rod, and a silica gel convex rib is fixedly installed on the inner side of the clamping plate. The adjustable fixing equipment for the artificial liver treatment filter pipeline is installed at the position of a connector, clamping plates on the two sides can be pushed to clamp a plug through a clamping spring installed inside, so that the effect of fixing the connector can be achieved, a worker can use the adjustable fixing equipment conveniently, and the vascular access fixing pipeline can be adjusted, hemostasis is achieved through compression, and the pipeline is prevented from being disengaged.

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.

A system for detecting whether a vascular access has been interrupted in an arrangement in which two catheters or needles are present in a blood vessel, fistula or graft. A fluid line leading to a pump is connected via a first connector to a first indwelling catheter, and a fluid line leading from a pump is connected via a second connector to a second indwelling catheter. Each connector is equipped with an electrode in contact with the lumen of the connector, the electrodes electrically connected to an electronic circuit that measures the impedance or conductivity of fluid between the first connector and second connectors via a fluid path through the blood vessel, fistula or graft. An electronic controller receives the impedance or conductivity data and processes the data to determine whether a vascular access disconnection has occurred. The processing may involve filtering the signal received by the controller, and / or setting provisional flags for a disconnection event that may be cleared if the signal changes before the expiration of a counter.

A biologic matrix comprises a three-dimensional, resorbable collagen scaffold derived from a vascularized portion of a perfusion-decellularized, suspension-dried mammalian organ or tissue. The scaffold features a porous structure with a plurality of interconnected pores originating from one or more of its outer surfaces. The pores are created by forcing a gas through the vascular pathways of the mammalian organ or tissue while it is in a suspended position. This enables the gas to inflate the vascular pathways in all directions without restriction. The porous configuration substantially enhances the scaffold's effective surface area, making it at least 10 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 15 times larger or more than the non-porous scaffold of equivalent outer dimensions.

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.

In aspects, the present application provides dried hemostatic films, and methods of making and using such films. The present application contemplates dried hemostatic film compositions comprising hydrophobically-modified chitosan (hm-chitosan) and polyvinyl alcohol (PVA) and / or Pluronic acid. The present application further contemplates methods for hemostasis during vascular access procedures in patients in need thereof.

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.

A fluid diverting device of an apparatus for extracorporeal treatment of blood, configured to be placed in series between a main portion (22) of the apparatus (1) and a vascular access of a patient (P) and comprising a substantially H-shaped conduit assembly comprising an extraction conduit (23), a return conduit (24) and at least one bridging conduit (25, 125) connecting the extraction conduit (23) to the return conduit (24). The extraction conduit (23) is connectable upstream and downstream to an extraction line (6) of the apparatus (1), and the return conduit (24) is connectable upstream and downstream to a return line (7) of the apparatus (1). A plurality of valves (26, 27, 28, 29, 30, 32) or distributors (201, 202) operate on the extraction conduit (23), the return conduit (24) and the at least one bridging conduit (25) and are configured to divert the flow of liquid and / or blood without disconnecting the patient (P).

The disclosure provides a dynamic vascular access and closure device for radial cinching of an access site. The device includes a tensioning tube, a resilient member disposed within the tensioning tube, and a plurality of sutures extending axially between a distal end of the tensioning tube and a proximal end of the tensioning tube. A proximal end of each of the plurality of sutures can be configured to attach to the resilient member such that movement of that suture causes compression or extension of the resilient member within the tensioning tube to provide cinching to the sutures.

A method of providing ventricular support for a human patient during a high-risk percutaneous coronary intervention procedure includes inserting a mechanical circulatory support device into the vasculature of a human patient. The mechanical circulatory support device being movable between a compressed state and an expanded state. The mechanical circulatory support device is delivered into a heart of the human patient with the aid of a delivery assist device. Operating. The mechanical circulatory support device is operated for a support period. A clinically significant arrhythmia adverse event (AE) associated with the mechanical circulatory support device experiencing the arrhythmia event between the time of vascular access with the mechanical circulatory support device and removal of the mechanical circulatory support device from the vasculature is approximately 2.3%.

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.

The utility model discloses an automatic hemostasis dialysis remaining needle which comprises a catheter assembly and a connector assembly arranged at one end of the catheter assembly, and a pipeline connector is further movably connected to the connector assembly. The guide pipe assembly comprises a guide pipe seat, a stop valve and a guide pipe; the connector assembly comprises a butt joint piece arranged at the end, away from the catheter, of the catheter base and a conduction piece arranged at the joint of the butt joint piece and the catheter base. The pipeline connector is pushed to drive the conduction piece to move towards the catheter to penetrate through the stop valve so as to conduct the blood vessel channel, the pipeline connector is detached, the stop valve resets and seals the blood vessel channel, and meanwhile the conduction piece is driven to move away from the catheter. According to the utility model, the connecting part is arranged at the connecting part of the catheter seat and the butt joint part, and the pipeline joint is used for pushing the connecting part, so that the stop valve is automatically switched between opening and closing, the function of opening and closing a vascular access is further realized, the mode of clamping and closing by using tissue forceps is replaced, and the safety performance is improved.

A device for vascular access is described herein. The apparatus may include a manipulating device configured to releasably couple a cartridge including a needle, a catheter, and a guidewire disposed coaxially with respect to one another, and a robotic arm coupled to the manipulating device. The manipulating device or cartridge may include a plurality of actuation mechanisms configured to selectively advance the needle, catheter, and guidewire when the manipulating device is coupled to the cartridge. The robotic arm may include a plurality of joints configured to rotate about a plurality of axes to position the cartridge relative to the patient's arm such that the needles, catheters, and guidewires may be inserted into the patient's target blood vessel.

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 present invention covers the use of chymase inhibitors in general and more in particular substituted bicyclically substituted uracils of general formula (I) as described and defined herein, and 3-methylbenzo-[b]thiophene)-2-sulfonamido derivatives of general formula (II) for manufacturing pharmaceutical compositions for the treatment or prophylaxis of stroke, pulmonary embolism, deep or superficial vein thrombosis, thrombotic microangiopathy, thrombotic microangiopathy in hypercoagulable states after infection, inflammation, transplantation, disseminated intravascular coagulation, vaccine-induced immune thrombotic thrombocytopenia, vascular access site thrombosis or occlusion.

The present invention provides a hemodialysis vascular access patency tester, comprising a syringe, a piston drive mechanism, a sealed detection box, a gauze band, and a gauze band drive mechanism. A one-way valve I is disposed within the empty needle nipple, the piston drive mechanism is disposed outside the right side of the syringe, and a liquid outlet is disposed on the left side of the syringe, near the end of the empty needle nipple. The sealed detection box comprises a sterile sealed box body, a diversion hopper, and a collection box. The sterile sealed box body is disposed outside the left side of the syringe, the diversion hopper and the collection box are disposed within the sterile sealed box body, and the outlet of the one-way valve II communicates with the diversion hopper. The gauze band is disposed between the diversion hopper and the collection box, and the gauze band drive mechanism is disposed outside the left side of the syringe. The sterile sealed box body is provided with a display for observing and / or displaying whether the gauze band contains blood clots. The entire withdrawal and injection process is performed automatically under sterile conditions, without the need for manual operation, significantly reducing the chance of contamination of the catheter connector.

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.

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 discloses a blood purification center nursing safety management method and system, and relates to the technical field of medical data analysis, and the method comprises the steps: collecting and preprocessing initial physiological data of a patient, dialysis initial parameters and vascular access state data at the beginning of dialysis, and generating a multi-modal data set; constructing a multi-modal blood safety model, predicting physiological indexes according to the multi-modal data set, and evaluating the blood safety of the patient according to the physiological indexes; a dialysis scheme is generated according to the evaluation result, and dialysis parameters are dynamically adjusted; collecting dialysis effect data, analyzing the effectiveness of a dialysis scheme through a statistical analysis method, and generating a dialysis effect report; according to the dialysis effect report, the multi-modal blood safety model is updated, and an optimized multi-modal blood safety model is generated. According to the method, the blood safety state of the patient is accurately evaluated by constructing the multi-modal blood safety model, and the safety and effectiveness of dialysis treatment are remarkably enhanced.