48 results about "Arterial canal" patented technology

The invention discloses a water quality modifying method of field ecological arterial canal-artificial wetland and reconstructing method of ecological system, which is characterized by the following: predisposing collected rural living effluent and little industrial waste water; flowing in the field ecological arterial canal; blending with field draining water; purifying; modulating water quantity through water collection biological pond; purifying in the artificial wetland; reconstructing ecological system to restore biological diversity.

The invention relates to a medical apparatus of interventional therapy, and particularly relates to a radiofrequency ablation electrode catheter used for curing refractoriness hypertension through per cutem and blood vessel to enter into renal artery. According to the invention, the technical problem to be solved is that a sympathetic nerve on the arterial canal of the renal artery can be effectively removed, so that damages to the inner wall of the vessel can be reduced. According to the invention, the radiofrequency ablation controlled electrode catheter for renal artery is provided with a catheter body, wherein an electrode is connected with a far-end of the catheter body; a control handle is connected with a near-end of the catheter body; an ablation electrode and a monitoring electrode are arranged at the far-end of the catheter body along the axis of the catheter body; and an interval is arranged between the ablation electrode and the monitoring electrode. Compared with prior art, the invention is in characterized in that no fill orifice is arranged on the ablation electrode; the monitoring electrode adjoins the ablation electrode through the interval; the temperature of the sympathetic nerve which is ablated is monitored during the ablation process, so as to judge a clinical treatment required value is reached; also, the conduction of sympathetic nerve signal acquired through monitoring the electrodes, and the comparison of conduction waveforms of the sympathetic nerve before and after ablation, can provide supplementary means for judging if a surgical operation end is finished or not.

The invention relates to the technical field of hemodialysis catheters, in particular to a fixing device for a catheter used in hemodialysis of a child. The invention aims to solve the problems that the fixing position of fixing equipment of a hemodialysis catheter is limited, a hemodialysis catheter is prone to deformation after being fixed, dialysate transmission is affected, and discomfort is easily caused due to the fact that the covering area of a connecting belt is large in the prior art. The fixing device for the catheter used in hemodialysis of the child comprises a dialysis tube bifurcation block and static artery tubes, wherein the static artery tubes are connected to the two sides of the front surface of the dialysis tube bifurcation block, and a connecting mechanism is arranged on one side of the outer side wall of the dialysis tube bifurcation block. According to the fixing device, after being tightened, a rubber band belt is driven by a supporting frame to be tightened again to fix a position, so the hemodialysis catheter can be fixed to a certain position without being limited by the hemodialysis catheter fixing device; length adjustment is conducted through a telescopic sleeve under ventilation control to protect the hemodialysis catheter, so the hemodialysis catheter is prevented from being damaged; and heat dissipation of a area covered by the rubber band is not affected by air generated after an air bag on the rubber band expands.

The invention relates to an automatic insect body-fluid collector. A delivery device, a table and a positioned cutting system are arranged on a frame. The delivery device comprises a rail, a clamp base and a clamp; the clamp base can shift transversely on the rail; the clamp can shift on the clamp base upwards or downwards. During use, insect holders are arranged on the table, backs of insects in the insect holders face to the cutting device, the insect holders are clamped and moved to the cutting device by the clamp, and then the backs of the insects are driven to face to the cutting device sequentially; therefore, when the cutting device cuts out the cuts, leading to back arterial canals, on surfaces of insects, no internal organs between the back arterial canals and the abdomens can be cut, and fluids of the internal organs cannot be mixed with the insect body fluids collected.

The invention discloses a control method and system of a dual plasma molecule adsorption system and a storage medium, and the method comprises the steps: obtaining the blood flow in an artery pipeline according to the rotating speed of a blood pump when the dual plasma molecule adsorption system carries out blood purification; determining the plasma flow of the plasma branch according to the plasma separation ratio of the plasma separator and the blood flow in the artery pipeline; according to the plasma flow and the blood purification time of the plasma branch, the first plasma cumulative adsorption quantity of the hemoperfusion device and the second plasma cumulative adsorption quantity of the bilirubin adsorption column are determined; when the first plasma cumulative adsorption quantity is larger than or equal to the first plasma target adsorption quantity of the hemoperfusion device, and/or the second plasma cumulative adsorption quantity is larger than or equal to the second plasma target adsorption quantity of the bilirubin adsorption column, a fault alarm signal is sent out; the blood perfusion device and/or the bilirubin adsorption column in the dual plasma molecule adsorption system are/is prompted to be replaced. In this way, the efficiency of DPMAS treatment can be improved.

The invention belongs to the field of medical instruments and relates to a device for being implanted in the abnormal bulging position of an arterial canal wall. The device comprises a bag capable of being implanted in the abnormal bulging position of the arterial canal wall and bulging, when the bag bulges, the bag has 3D modeling anatomy three-dimensional morphological features conforming to the implanting position, and therefore blood cannot flow into the abnormal bulging position of the arterial canal wall from an arterial canal. According to the device, the blood cannot flow into the abnormal bulging position of the arterial canal wall from the arterial canal, blood flow smoothness in the tumor-carrying arterial canal is kept, blood flow smoothness of branch blood vessels of the arterial canal is kept, thus, the device can be used for treating the diseases such as intracranial aneurysms, visceral aneurysms, false aneurysms, aortic aneurysms, artery dissection and aortic dissection, and a new way for aortic disease interventional therapy is expected to be opened up.

The invention discloses an ECMO simulation training human body model convenient to exhaust, which comprises a model main body and a simulated heart container arranged on the model main body, the simulated heart container is provided with a main vein tube and an aortic tube, the main vein tube is connected with a vein branch tube, the vein branch tube is detachably connected with a vein needle insertion tube, the aortic tube is connected with a carotid artery tube, and the carotid artery tube is detachably connected with a vein needle insertion tube. The upper end of the carotid artery tube is detachably connected with a first artery needle inserting tube, the upper end of the first artery needle inserting tube is connected with an exhaust funnel communicated with the first artery needle inserting tube, an exhaust hole is formed in the upper end of the exhaust funnel, a floating block capable of floating on the water surface is arranged in the exhaust funnel, and an air inlet communicated with the first artery needle inserting tube is formed in the lower end of the exhaust funnel. And a sealing structure capable of sealing the exhaust hole when the floating block is in a floating state is arranged between the floating block and the exhaust funnel. The human body model can be applied to ECMO simulation practical training, and air in the liquid channel can be conveniently exhausted in the simulation practical training.

The invention discloses a human body model applied to ECMO simulation practical training, which comprises a model main body and a simulated heart container arranged on the model main body, the simulated heart container is provided with a main venous canal and an aortic canal, and the model main body is provided with a femoral venous canal, a femoral artery canal, a jugular venous canal and a carotid artery canal. The upper end of the femoral vein tube, the lower end of the jugular vein tube and the main vein tube are connected through a three-way valve, the upper end of the femoral artery tube, the lower end of the carotid artery tube and the aorta tube are connected through a three-way valve, and the upper end of the jugular vein tube, the lower end of the femoral vein tube, the upper end of the carotid artery tube and the lower end of the femoral vein tube are all detachably connected with needle inserting tubes. According to the human body model, students can master clinical operation of ECMO skillfully, and meanwhile, a punctured tube can be replaced conveniently.

Methods of monitoring arterial blood using an arterial line tube positions adjacent to a groin sheath, as part of a surgical intervention. Described herein are methods and apparatuses (e.g., systems) for introduction of an arterial line tube for contemporaneous and sensitive blood pressure monitoring along with other instrumentation in the course of a therapeutic intervention through a femoral artery, affording improved monitoring results.

The invention relates to the technical field of medical apparatus and instruments, in particular to a hemostatic stent for heart great vessel surgery, which is characterized in that a first shell and a second shell can be relatively closed and opened by using a connecting assembly, so that when aorta is clamped and sealed, the first shell and the second shell can be relatively closed and opened; the first shell and the second shell which are oppositely opened are smoothly arranged at any position of an arterial canal in a sleeving mode through the opened opening, installation of the clamping and sealing assemblies on the aorta is conveniently completed, in addition, the two clamping and sealing assemblies are arranged on the first shell and the second shell at the same time, alternate clamping can be conveniently achieved during aorta clamping and sealing hemostasis, and the clamping and sealing efficiency is improved. The problems that in the long-time operation process, if the clamping and sealing assembly is not loosened frequently, the outer wall of the aorta blood vessel is damaged to a certain degree, once the clamping and sealing assembly is loosened, the aorta sprays a large amount of blood, the blood loss amount in the operation is increased, the operation view is affected, and meanwhile the operation risk is increased are effectively avoided.

The invention relates to the technical field of blood purifying medical apparatuses and particularly relates to a blood purifying ultrafiltration device. The blood purifying ultrafiltration device comprises an ultrafilter. The ultrafilter comprises an ultrafilter body and an artery connector and a vein connector arranged on the ultrafilter body; the blood purifying ultrafiltration device further comprises an arterial canal connected to the artery connector and the arterial canal comprises an artery connecting end, an artery switch, a pump pipe, an artery kettle and an artery connector end which are successively arranged, wherein the artery connector end is connected to the artery connector, and a vein pipe is connected to a vein connector; the vein pipe comprises a vein connecting end, a vein switch, a vein kettle and a vein connector end which are successively arranged, wherein the vein connector end is connected to the vein connector. The device has the advantages that 1, the project treatment can be conducted by common blood purifying equipment, so that the cost is relatively low, and the device is conveniently operated by medical care staff and used by patients; 2, the quantity of extracorporeal blood is small, and the treatment risk of patients with cardiac failure is reduced; and 3, the treatment cost of extracorporeal circulation is reduced compared with that of a high-end continuous blood filtering equipment and consumables, and the medical efficiency is improved.

The invention relates to an application of bexarotene (4-[1-(5, 6, 7, 8-tetrahydro-3, 5, 5, 8, 8-pentamethyl-2-naphthyl) vinyl] benzoic acid) or/and a pharmaceutically acceptable salt thereof in preparation of anti-pulmonary arterial hypertension drugs. The chemical structural formula of bexarotene is shown as a formula I in the specification. According to the application, rat pulmonary artery smooth muscle cells are adopted for investigating the smooth muscle cell proliferation and migration inhibiting effect of bexarotene, and the result shows that bexarotene can obviously inhibit PASMCs proliferation and migration. The monocrotaline-induced rat pulmonary arterial hypertension model is adopted to investigate the anti-pulmonary arterial hypertension vascular remodeling of the bexarotene,and the result shows that the oral administration of the bexarotene can significantly inhibit the increase of the pulmonary arterial pressure and the right ventricular systolic pressure of rats, significantly reduce the NT-proBNP level in the rat plasma, can obviously inhibit thickening of pulmonary artery intima media and reduce the narrow level of pulmonary arteriole lumens, and a safe, effective and economical solution is provided for prevention and treatment of pulmonary arterial hypertension and pulmonary vascular remodeling.

The invention discloses a blood purification system. The blood purification system comprises an arterial tube, a venous tube and a dialyzer, wherein one end of the arterial tube is an arterial connecting end, and the other end of the arterial tube is a dialyzer connecting end A; a flushing branch tube, a blood pump and an arterial pot are sequentially arranged between the arterial connecting end and the dialyzer connecting end A; one end of the venous tube is a venous connecting end, and the other end of the venous tube is a dialyzer connecting end B; a venous pot is arranged between the venous connecting end and the dialyzer connecting end B; the dialyzer comprises a shell; a second flow dividing plate is arranged at the bottom end of the interior of the shell; a second flow dividing cavity is formed in the second flow dividing plate; a dialysis membrane is connected to the top of the second flow dividing cavity; a first flow dividing plate is connected to the top of the dialysis membrane; a first flow dividing cavity is formed in the first flow dividing plate; and flow dividing holes are formed in one side of the first flow dividing cavity and one side of the second flow dividingcavity. The hemodialysis efficiency can be improved, and efficient operation of the blood purification system is facilitated.