36 results about "Arterial canal" patented technology

The embodiment of the invention provides a continuous blood oxygen monitoring system in extracorporeal circulation and a control method thereof. The continuous blood oxygen monitoring system comprises a vein sensor, an artery sensor, a blood flow sensor, an oxygen sensor, a carbon dioxide sensor, a controller and a display, the vein sensor monitors the vein blood oxygen saturation degree; the artery sensor monitors arterial oxygen saturation and hematocrit; the blood flow sensor monitors the blood flow of the artery pipeline; the oxygen sensor monitors the oxygen concentration of the oxygenator; the carbon dioxide sensor monitors the carbon dioxide concentration of the oxygenator; the display provides an interaction control, responds to a trigger operation acting on the interaction control, sends an interaction instruction to the controller, and updates information displayed in an interaction interface according to the control of the controller; the controller receives the interaction instruction and executes processing corresponding to the interaction instruction; the processing includes controlling display information of the display; the display information comprises information corresponding to the monitoring parameters. The scheme ensures the safety and effectiveness of the treatment process.

The invention relates to the technical field of blood purification, and particularly discloses an integrated blood purification pipeline consumable device which comprises a main body bracket, and an artery pipeline assembly, a dialysis filter, a vein pipeline assembly, a pre-flushing piston assembly, a liquid inlet tank assembly and a liquid outlet tank assembly which are mounted on the main body bracket. The key core problem solved by the invention is to integrate treatment consumable pipelines and integrate a plurality of auxiliary function modules, so that the operation convenience of medical staff is greatly improved on the premise of ensuring treatment; by configuring an automatic pre-flushing function, a heparin injection function, a quantitative system and the like, the operation process of ultralight portable blood purification equipment matched with the device can be simplified, the size and the weight of the equipment are reduced, and the equipment is suitable for wider and more complex application environments; the method can be used for early treatment of severe wounded persons in modern wars, emergency supplement of conventional dialysis treatment patients, disaster relief without traditional dialysis conditions, self-treatment of patients in emergencies and the like, and has wide application prospect and practical value.

The utility model discloses a double-bubble monitoring choke clip for a hemodialysis machine, which comprises a mounting part mounted on the outer surface of the hemodialysis machine, and the mounting part is provided with an artery pipeline channel for placing an artery pipeline and a vein pipeline channel for placing a vein pipeline. The artery pipeline channel and the vein pipeline channel penetrate through the mounting part, monitoring probes used for monitoring whether bubbles are generated in the artery pipeline or the vein pipeline are arranged on the inner wall of the artery pipeline channel and the inner wall of the vein pipeline channel, and chucks used for clamping the artery pipeline or the vein pipeline are arranged in the artery pipeline channel and the vein pipeline channel. The artery pipeline and the vein pipeline can be monitored at the same time, and monitoring is comprehensive.

The application discloses a blood purification device and a storage medium. The device comprises a memory and a processor. The memory stores a computer program, and the processor executes the computer program to realize the method. When the actual rotating speed of a first peristaltic pump detected is greater than a preset rotating speed, the pressure alarm range of an arterial pipeline and the pressure sampling period of a first pressure sensor are determined according to the actual rotating speed of the first peristaltic pump. The first pressure sensor is controlled to periodically sample the blood pressure of the arterial pipeline according to the pressure sampling period, and a plurality of continuous first detection pressures are obtained. Whether the first peristaltic pump is stopped is determined according to the first average pressure of the plurality of continuous first detection pressures and the pressure alarm range of the arterial pipeline. In this way, the application can more accurately and timely discover the pressure fault of the arterial pipeline, and improve the blood flow safety of the arterial pipeline.

The utility model belongs to the technical field of medical teaching models, and particularly discloses a simulation limb arteriovenous hemorrhage simulation device which comprises a simulation blood storage device and a simulation limb, a blood pressure circulation control box is arranged between the simulation blood storage device and the simulation limb, and the simulation blood storage device is connected with the blood pressure circulation control box through a liquid extraction pipe. An artery tube set used for simulating artery blood supply and blood overflow and a vein tube set used for simulating vein blood supply and blood overflow are arranged in the simulation limb, and a liquid outlet of the blood pressure circulation control box is communicated with a backflow opening of the simulation blood storage device and an artery blood outlet in the simulation limb through the artery tube set. Or the liquid outlet of the blood pressure circulation control box is communicated with the backflow port of the simulation blood storage device and the vein bleeding port on the simulation limb through the vein tube group. According to the utility model, the artery tube group and the vein tube group are arranged in the simulation limb, so that blood pressure changes in different states, including arterial high-pressure bleeding, vein low-pressure errhysis and other scenes, are simulated, and the sense of reality of training is enhanced.

The invention discloses a hemodialysis tube fixing device with a temperature compensation function. The hemodialysis tube fixing device comprises a fixing base, a base, two sets of clamping jaws, two rotary knobs, a transmission assembly, an electric heating piece and a display screen. The electric heating pieces are arranged on the inner sides of the clamping jaws and used for temperature compensation, the fixing base and the base are connected through an intermittent rotating movement mechanism, and the two rotary knobs can control the two sets of clamping jaws to be opened independently through transmission assemblies. According to the clamping device, an artery pipeline and a vein pipeline in a hemodialysis pipeline can be clamped separately, and operation is more convenient, faster and simpler; in addition, the fixing seat and the base are connected through the intermittent rotation movement mechanism, relative deflection between the fixing seat and the base can be achieved, rotation and stop can be achieved at any time, good controllability and convenience are achieved, the device can be suitable for different patient body positions, and pipeline folding, traction and slipping are prevented.

The utility model provides a hemodialysis catheter fixing device, and relates to the technical field of hemodialysis catheter fixing devices, the hemodialysis catheter fixing device comprises a fixing plate, a fixing structure is arranged on the fixing plate, the fixing structure is mainly composed of two first limiting blocks, the two first limiting blocks are both arranged on the fixing plate, and the first limiting blocks are arranged on the fixing plate. A first limiting block is arranged on the base, a rotating shaft is rotationally connected to the first limiting block, a second limiting block is fixedly connected to the rotating shaft, rubber blocks are fixedly connected to the first limiting block and the second limiting block, a connecting block is fixedly connected to the first limiting block, and a connecting groove is formed in the second limiting block; the hemodialysis catheter fixing device solves the problem that the hemodialysis catheter between a hemodialysis instrument and a patient naturally falls down under the action of gravity and scatters on the ground due to the fact that an existing hemodialysis catheter is usually directly fixed on the hemodialysis instrument, a venous catheter and an arterial catheter are prone to being wound, and the hemodialysis effect is affected.

An extracorporeal and drug delivery system includes (i) a renal failure therapy machine operable with a blood filter in fluid communication with an arterial line and a venous line, the machine including (a) an effluent pump for pumping effluent from the blood filter at an effluent flowrate, and at least one of (b) a dialysis fluid pump for pumping dialysis fluid to the blood filter at a dialysis fluid flowrate, (c) a predilution pump for pumping replacement fluid into the arterial line at a predilution flowrate, or (d) a postdilution pump for pumping replacement fluid into the venous line at a postdilution flowrate; (ii) an infusion pump operable to deliver an intravenous (“IV”) drug to the patient at an IV drug flowrate; and (iii) a coordinating logic implementor configured to adjust the IV drug flowrate based on an amount of the IV drug removed via the effluent flowrate.

The application discloses a method for adjusting the pressure of a main pump in an extracorporeal circulation process, and the method comprises the following steps: after the pre-charging of a membrane oxygenator is completed, an arterial pipeline connected with the membrane oxygenator is clamped and closed, and only a small side pipeline is left to communicate with the membrane oxygenator; a pump pressure gauge is arranged on the small side pipeline; the main pump is adjusted to a required position, and the pressure of the main pump on the circulating pipeline is adjusted, and the pressure is adjusted to 150mmHg-250mmHg. The specific pressure value of the main pump when the pressure is adjusted is displayed by the pump pressure gauge, so that the adjustment process and result can be visualized, the adjustment result is converted into the specific pressure value of the pump pressure gauge, the reference data of the adjustment of the pressure of the main pump is standardized, the adjustment precision is effectively ensured without relying on experience and feeling, the adjustment mode is quick and accurate, the adjustment efficiency can be improved, and the stability of the adjustment pressure is ensured by controlling the pressure of the main pump, so that the backflow of arterial blood caused by unstable pressure can be avoided.

The present application discloses a blood purification device and a storage medium, the device including a memory and a processor, the memory being used to store a computer program; the processor being used to execute the computer program and, when executing the computer program, implementing the following heparin control method: detecting the blood flow in the arterial line; if the blood flow is less than a first preset flow, controlling the blood purification device to issue a prompt message to prompt the user to perform heparin anticoagulation; if a heparin adjustment operation input by the user in response to the prompt message is detected, causing the heparin pump to control the heparin output line to output heparin to the arterial line according to a recommended flow rate value, the recommended flow rate value being obtained based on the blood flow in the arterial line. In this way, the present application can ensure that the heparin output line outputs heparin to the arterial line in a timely and reasonable manner.

Cerebral autoregulation is a physiological process that ensures stable and adequate blood flow to the brain, despite fluctuations in systemic blood pressure. Non-invasive measurement of cerebral blood flow and related parameters is complex and challenging, often requiring an invasive arterial line (A-line). Using concurrent PPG and ECG signals as inputs to one or more machine learning models, methods and systems non-invasively determine blood pressure (BP) output, including waveform morphology, MAP trending, and predicted BP in mmHg, and real-time quality metrics associated therewith. Based on the BP output, along with other inputs, non-invasive monitoring of cerebral autoregulation is provided.

An extracorporeal and drug delivery system includes a renal failure therapy machine operable with a blood filter in fluid communication with an arterial line and a venous line, the machine including an effluent pump for pumping effluent from the blood filter, and at least one of a dialysis fluid pump for pumping dialysis fluid to the blood filter at a dialysis fluid flowrate, a predilution pump for pumping replacement fluid into the arterial line at a predilution flowrate, or a postdilution pump for pumping replacement fluid into the venous line at a postdilution flowrate; an infusion pump operable to deliver an intravenous (“IV”) drug to the patient; and a coordinating logic implementor configured to determine if a formulation adjustment should be made to the IV drug when a constituent of the IV drug exists in the dialysis fluid, the predilution replacement fluid, and / or the postdilution replacement fluid.

The utility model provides an integrated external circulation pipeline and blood purification equipment, and relates to the technical field of blood purification, the integrated external circulation pipeline comprises a box body and an artery pipeline area, a vein pipeline area and a plasma pipeline area which are arranged on the box body, the artery pipeline area comprises a blood sampling input end, a blood sampling pump input end, a blood sampling output end and a blood sampling pump output end, the blood sampling input end is in liquid communication with the input end of the blood sampling pump through a first pipeline, and the blood sampling output end is in liquid communication with the output end of the blood sampling pump through a second pipeline; the vein pipeline area comprises a bubble catcher, a blood return input end, a transfusion pump input end, a transfusion pump output end and a blood return output end, the blood return input end is connected with the bubble catcher through a third pipeline, the bubble catcher is communicated with the transfusion pump input end through a fourth pipeline, and the transfusion pump output end is connected with the blood return output end through a fifth pipeline. According to the invention, the workload of pipeline connection can be reduced, the pipeline connection work can be simplified, and the probability of connection errors of workers can be effectively reduced.

A spiral end head hemodialysis catheter comprises a catheter body, a partition, a venous lumen, an arterial lumen, and side openings at one end of the venous lumen and the arterial lumen, a spiral plate body is arranged at the distal end of the partition, both sides of the spiral plate body are integrally connected with the inner side of the catheter body, and venous spiral cavities and arterial spiral cavities are formed at the end of the catheter body; spiral side holes are arranged on the side walls of the catheter body at the inner ends of the two side cuts, and the two spiral side holes are respectively communicated with the venous lumen and the arterial lumen; the spiral plate body forms a spiral support structure on the inner wall of the catheter, increases the support area of the partition on the inner wall of the catheter, improves the kink resistance and fracture strength of the catheter tip, and makes the catheter have stronger stability in the vein; the spiral side holes arranged at the venous lumen and the arterial lumen form a long opening structure, improve the blood flowability, and the spiral side holes can produce spiral guiding effect, reduce blood accumulation, make blood inflow and outflow more smooth, and effectively reduce thrombus formation.

Presented is an airway organ bioreactor apparatus, and methods of use thereof, as well as bioartificial airway organs produced using the methods, and methods of treating subjects using the bioartificial airway organs. The bioreactor comprises: an organ chamber: an ingres line connecting the organ chamber and a reservoir system and comprising an arterial line, a venous line and a tracheal line; an egress line connecting the chamber and the reservoir system, pumps in ingress and egress lines; a controller to control fluid exchange; a chamber pressure sensor connected to the organ chamber.

The invention discloses a blood purifier with a heating function, and relates to the technical field of blood purification. Comprising a machine body, a support plate is fixedly installed on the upper end face of the machine body, a circulating pump is fixedly installed on the support plate, the input end of the circulating pump fixedly communicates with an arterial duct, the output end of the circulating pump fixedly communicates with a suction pipe, and a detector is arranged on the arterial duct; an L-shaped connecting rod is fixedly installed on the side end face of the machine body, a heating box is fixedly installed on the L-shaped connecting rod, one side of the heating box is fixedly communicated with a vein tube, and the heating box is fixedly communicated with a connecting tube. According to the blood purifier, efficient blood filtration and secondary purification are achieved through mutual cooperation of all structures in the filtering assembly, meanwhile, the structure in the filtering assembly is matched with the heating assembly, it is guaranteed that blood is kept at the proper temperature in the purification process, and the use effect of the blood purifier is greatly improved.

The application provides an ultrasound artery segmentation method, system and device based on positioning knowledge driving, and relates to the technical field of medical image processing. The method comprises the following steps: acquiring an original ultrasound image, wherein the original ultrasound image is an image containing an arterial lumen; based on a positioning prior learning model, rough region mask mapping of the original ultrasound image is realized to obtain a positioning map containing an arterial highlight region; the original ultrasound image and the positioning map are input into a fusion model to obtain a fusion feature map; based on a segmentation network model, the fusion feature map is segmented to obtain a target segmentation image; wherein the fusion model is a model of guided adaptive fusion. The method effectively solves the positioning ambiguity problem of the arterial lumen in the ultrasound image, ensures the correct positioning of the target, thereby making the subsequent segmentation more stable and accurate, and effectively avoiding missed segmentation and erroneous segmentation.

The utility model relates to the technical field of waterproof instruments for deep vein canals, and provides a protection instrument for a subclavian semi-permanent deep vein canals, which comprises a bag body, a puncture tube opening, two arteriovenous fixing parts and a bonding part, the bag body is provided with a waterproof cavity and a contact surface facing a puncture part, the two arteriovenous fixing parts are arranged in the waterproof cavity, and the bonding part is arranged in the waterproof cavity. The bonding part is arranged on the contact surface, and the bonding part and the two arteriovenous fixing parts are oppositely arranged on the bag body. By arranging the two arteriovenous fixing parts, the vein tube and the arterial tube can be respectively fixed on the bag body, and the bonding part and the two arteriovenous fixing parts are oppositely arranged on the bag body, so that the two arteriovenous fixing parts and the bonding part are relatively static, and the vein tube and the arterial tube are indirectly fixed on the skin of a patient through the bonding part; when a patient takes a bath, even if the motion range is too large, the venous catheter and the arterial catheter cannot shake relative to the patient or even impact the bag body, the venous catheter and the arterial catheter are not prone to being separated from the bag body, and safety is achieved.

An extracorporeal and drug delivery system includes: (i) a renal failure treatment machine operable with a blood filter in fluid communication with an arterial line and a venous line, the machine including: (a) an effluent pump for pumping effluent from the blood filter at an effluent flow rate; and at least one of: (b) a dialysis fluid pump for pumping dialysis fluid to the blood filter at a dialysis fluid flow rate; (c) a pre-dilution pump for pumping replacement fluid into the arterial line at a pre-dilution flow rate; or (d) a post-dilution pump for pumping replacement fluid into the venous line at a post-dilution flow rate; (ii) an infusion pump operable to deliver an intravenous ("IV") drug to a patient at an IV drug flow rate; and (iii) a coordination logic implementer configured to adjust the IV drug flow rate based on an amount of the IV drug removed via the effluent flow rate.

An example medical system includes a hemodialysis device configured to receive blood from vasculature of a patient via an arterial line and to deliver blood to the vasculature of the patient via a venous line. The medical system includes a hematocrit sensor configured to generate a signal indicative of a hematocrit level of blood in at least one of the arterial line or the venous line. The medical system also includes processing circuitry configured to determine a change in blood volume of the patient over time based on the signal indicative of the hematocrit level, determine a threshold blood volume reduction over time for the patient, compare the change in the blood volume of the patient over time to the threshold blood volume reduction over time, and based on the comparison, generate an indication of vascular access recirculation.

This application provides a catheter assembly and a carotid artery bypass system. The deformable tube has axial telescoping function, and the deformable part is movably sleeved on the outside of the deformable tube. The distal end of the deformable part is connected to the deformable tube and the inner catheter, and the proximal end of the deformable part is connected to the deformable tube and the outer catheter. The deformable part has a contracted state and an expanded state. When the above-mentioned carotid artery bypass system is inserted into the artery, the operator can actively control the shortening of the deformable tube at an appropriate time, thereby increasing the effective working window of the common carotid artery segment. The wide range of telescoping can dynamically match the length of the common carotid artery lesion, covering most clinical cases of carotid artery stenosis. In addition, the operator can also actively control the contracted and expanded states of the deformable part at an appropriate time, using the expanded state of the deformable part to properly fit the inner wall of the blood vessel, forming a mechanical anchoring point on the inner wall of the blood vessel, effectively solving the problem of unexpected slippage of the carotid artery nerve protection system relative to the common carotid artery.

Disclosed are catheters useful in dialysis treatment of a patient. In an example, a catheter includes a tip that has an arterial lumen that directs blood flow in the direction of a dialysis machine and a venous lumen that directs flow in a direction away from the dialysis machine. One or both of the arterial and venous lumens includes within it a spiral flow inducing structure that cause blood flow to rotate as it travels through the lumen. In particular applications the one or more spiral flow inducing structure are spiral laminar flow inducing structures.

The invention discloses a hemodialysis blood path tube with an arteriovenous pot convenient to replace. The hemodialysis blood path tube comprises a dialyzer, an arteriovenous pot, a vein pot, an arteriovenous pipeline and a vein pipeline. The artery pot comprises a fixed seat and an artery pot body; the artery pipeline comprises a first artery pipe, a second artery pipe and a blood pump; the first arterial duct is connected with the human body, the blood pump and the arterial pot body; the second artery tube is connected with the artery pot body and the dialyzer; the vein pot comprises a mounting seat and a vein pot body, and the mounting seat is connected with the vein pot body; the vein pipeline comprises a first vein pipe, a second vein pipe and a branch pipe; the first vein tube is connected with a human body and the vein pot body; the second vein tube is connected with the vein pot body and the dialyzer; one end of the shunt tube is connected with the first venous tube, and the other end is connected with the second venous tube. The arteriovenous kettle has the advantages that the arteriovenous kettle body can be fixed on an external structure so as to prevent accidental pulling from affecting use; the artery pot body and the vein pot body are detachably connected with the pipeline, so that the artery pot body and the vein pot body can be conveniently, rapidly and independently replaced without replacing the whole pipeline, and use is facilitated.

The invention discloses a hemodialysis pipeline fixing device convenient to connect, and relates to the technical field of hemodialysis, the hemodialysis pipeline fixing device comprises a fixing support, and the fixing support is fixed on a supporting rod through a clamping unit; the main fixing assembly is fixedly connected with the fixing support. The front end of the main fixing assembly is provided with a main guide groove unit. An auxiliary fixing assembly is arranged in the main fixing assembly. The front end of the auxiliary fixing assembly is provided with an auxiliary guide groove unit, and the main guide groove unit and the auxiliary guide groove unit are matched with each other to form a complete guide groove structure. The main guide groove unit and the auxiliary guide groove unit are used for placing an artery pipeline and a vein pipeline; a plurality of groups of guide units are further arranged on the main guide groove unit and the auxiliary guide groove unit; the guide units are used for clamping an artery pipeline and a vein pipeline into the main guide groove unit or the auxiliary guide groove unit; the device has the advantages that an artery pipeline and a vein pipeline can be fixed at the same time, the pipelines are prevented from slipping, and the pipeline storage efficiency and safety are improved.

The application provides a traditional Chinese medicine composition for treating pulmonary arterial hypertension and a preparation method and application thereof, and belongs to the technical field of traditional Chinese medicine. The traditional Chinese medicine composition is composed of ginseng, astragalus, cassia bark, prepared licorice, prepared rehmannia, angelica, white peony root, chuanxiong, persicae semen and safflower. The preparation method is as follows: water is added to decoct and extract to obtain a traditional Chinese medicine extract; the traditional Chinese medicine extract can be further concentrated into a clear paste, and excipients are added to prepare other dosage forms. Animal experiments show that the traditional Chinese medicine composition can significantly reduce the pulmonary arterial pressure of a hypoxic pulmonary arterial hypertension model rat, reduce the right ventricular hypertrophy index, reduce the wall thickness percentage and area percentage of pulmonary arterioles, increase the lumen area percentage of pulmonary arterioles, and effectively improve pulmonary vascular remodeling; clinical cases show that the traditional Chinese medicine composition can significantly improve the symptoms of pulmonary arterial hypertension and heart failure. The traditional Chinese medicine composition has the effects of tonifying qi, activating blood, removing blood stasis and dredging collaterals, can be used for preventing and / or treating pulmonary arterial hypertension, and has good safety.

The present invention provides a control method for a blood purification device, a blood purification device, and a computer-readable storage medium. The control method for the blood purification device includes: detecting the blood flow in the arterial line to obtain a first detection flow Q1, and detecting the plasma flow at the input end of the plasma adsorption branch to obtain a second detection flow Q2; calculating to obtain the separation ratio of the plasma separator to determine whether K>Δk is satisfied, and if so, controlling the bypass branch to be connected to the venous line; if not, controlling the blood purification branch to be connected to the venous line; wherein Δk is a first preset ratio. The control method for the blood purification device of the present invention can adaptively adjust the structure of the extracorporeal blood purification circuit, and has high adjustment flexibility, thereby improving the efficiency and effect of blood purification treatment, making blood purification treatment safer and more reliable, and improving the compatibility and scope of application of the blood purification device.

A device (1) is provided for the treatment of aortic pathologies in the abdominal and thoracoabdominal aortic tract comprising a prosthesis (2) including an inlet duct (20) adapted to be sutured to a main blood vessel (V1) at an aneurysm and including a plurality of openings (20a) placed peripherally to the inlet duct (20), a pair of outlet ducts (21) formed by the bifurcation of the inlet duct (20) and each adapted to be sutured to a secondary blood vessel (V2), a plurality of secondary duct (22) each in fluid passage connection with the inlet duct (20) through a respective opening (20a) and each adapted to be sutured to an arterial branch (V3); and a plurality of radiopaque markers (3) each bound to a respective secondary duct (22) at the opening (20a).

An example medical system includes a hemodialysis device configured to receive blood from vasculature of a patient via an arterial line and to deliver blood to the vasculature of the patient via a venous line. The medical system includes a hematocrit sensor configured to generate a signal indicative of a hematocrit level of blood in at least one of the arterial line or the venous line. The medical system also includes processing circuitry configured to determine a change in blood volume of the patient over time based on the signal indicative of the hematocrit level, determine a threshold blood volume reduction over time for the patient, compare the change in the blood volume of the patient over time to the threshold blood volume reduction over time, and based on the comparison, generate an indication of vascular access recirculation.

The application provides a kind of for the double lumen pipeline across aortic valve, it is used for the patient of venous-arterial extracorporeal membrane oxygenation (VA-ECMO) treatment by femoral artery cannulation, it includes: first pipeline, second pipeline;The first end and the second end of first pipeline are both open;The first end of first pipeline is used to enter left ventricle after crossing the aortic valve of the heart of subject, and the second end of first pipeline is used to connect ECMO pipeline venous tube tee joint;The first end of second pipeline is blocked, and the second end of second pipeline is open;Second side hole is formed near the first end of second pipeline;The second side hole is located between the aortic valve of subject and head and arm stem, and the second end of second pipeline is used to connect ECMO pipeline arterial tube tee joint;First pipeline and a part of second pipeline are integrally formed;The first end of first pipeline extends beyond the first end of second pipeline, and forms extension section.