23 results about "Arterial canal" patented technology

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.

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.

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.

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 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.

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.

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.

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.

The invention discloses a multi-balloon catheter which is suitable for being arranged in a descending aorta and close to a renal artery duct, the multi-balloon catheter comprises a catheter body and at least three fixed balloons which are communicated with the periphery of the catheter body and are arranged at intervals, and an inflation cavity communicated with at least one fixed balloon is formed in the catheter body; the three fixing balloons are arranged in the axial direction of the catheter body and all have an expansion state and a contraction state, and the diameter of the single fixing balloon in the expansion state ranges from 8 mm to 12 mm. According to the arrangement, the three fixed balloons are arranged on the catheter body at intervals, segmented contact can be formed for the descending artery catheter, therefore, the overall pressure of the catheter is effectively dispersed, and the risk that the balloons are abraded by plaques can be greatly reduced. The expansion diameter of the three fixed balloons is 8-12 mm, and compared with an existing conventional balloon, the expansion diameter of the three fixed balloons is obviously reduced and is only equivalent to 60%-80% of the expansion diameter of the existing balloon, friction between the balloons and plaques in the descending aortic canal can be effectively avoided, and the balloons are prevented from being clamped due to the fact that the balloon is narrow in the canal.

The present technology relates to devices for treating arteries. In several embodiments, for example, the present technology comprises an expandable structure configured to be intravascularly positioned within a lumen of the artery at a treatment site, where the artery has a substantially circular cross-sectional shape at the treatment site prior to deployment of the expandable structure therein. When the expandable structure is in an expanded state and positioned in apposition with the arterial wall at the treatment site under diastolic pressure, the expandable structure may force the artery into a non-circular cross-sectional shape. A cross-sectional area of the artery in the non-circular cross-sectional shape may be less than a cross-sectional area of the artery in the substantially circular cross-sectional shape.

The invention discloses a hemodialysis and blood perfusion combined treatment device, relates to the technical field of medical equipment, and aims to solve the problem that heparin and blood of a patient cannot be fully mixed by an existing perfusion device, the hemodialysis and blood perfusion combined treatment device comprises a perfusion device body, a mixing bin is inserted into the bottom of the perfusion device body, and a vein tube is inserted into the bottom of the mixing bin; an arterial duct is inserted into the upper side of the perfusion device body, a shunting mixing module is arranged on the mixing bin, a temperature control module is arranged below the perfusion device body, and the temperature control module is located on the mixing bin. The hemodialysis and blood perfusion combined treatment device has the advantages that heparin-containing blood flowing out of the perfusion device body can be secondarily mixed, so that the blood and heparin mixing effect is improved, the blood coagulation condition in a flowing loop is reduced, it is guaranteed that the blood of a patient can normally circulate, and the treatment effect is improved. And the condition that the coagulated blood is conveyed back into the body of the patient again to generate adverse effects on the patient is avoided.

The application discloses a hemodialysis circulating pipeline, which comprises an arterial pipe and an arterial pot installed on one side of the arterial pipe, the outer wall of the arterial pipe is uniformly connected with a plurality of auxiliary pipes, the top end of the auxiliary pipe is provided with a sealing mechanism, and a buffer pot is installed on the top of the auxiliary pipe for reducing instantaneous impact during liquid supplementing, and the application relates to the technical field of dialysis pipeline. The hemodialysis circulating pipeline has the advantages that the joint anti-loosening performance is improved compared with the traditional conical surface friction joint through the triple anti-loosening mechanism of the axial thread fastening of the external connection fixing mechanism, the end surface elastic sealing and the anti-skid point static friction, the joint effectively resists the low-frequency vibration of a dialysis machine and the continuous pulling of a patient, and the double structure of the elastic clasp axial locking and the steering protrusion circumferential locking of the steering limiting mechanism is matched, the joint anti-pulling-off force is further improved, the serious safety hazards such as blood leakage and joint collapse are fundamentally eliminated, and the risks of patient blood loss and air embolism are avoided.

The present application relates to the field of medical apparatus and instruments, more particularly to a single-pump dialysis machine automatic priming detection method and system, the specific steps comprising: dialysate is used to automatically prime the single-pump dialysis machine through the series connection of the ultra-clean filter; the single-pump dialysis machine comprises a dialyzer, an arterial pipeline and a venous pipeline; after the priming fluid enters the single-pump dialysis machine, the alarm system is used to monitor and warn the leakage existing in the venous pipeline and the arterial pipeline; the present application is used to solve the problem that the dialysate in the single-pump dialysis device does not meet the replacement fluid requirements, affecting the replacement effect; manual priming is prone to errors, physiological saline bags are consumed in large quantities; and the air tightness cannot be detected; the ultra-clean filter is used to reach the priming fluid standard, improve the priming effect, reduce the use of physiological saline in the traditional steps, and reduce the use cost; the automatic priming can be completed in both hemodialysis (HD) and hemodiafiltration (HDF) modes; the alarm system is used for leakage monitoring, avoiding serious accidents caused by improper use.