23 results about "Arterial perfusion" patented technology

The medicine injection equipment is characterized in that the medicine injection equipment comprises a blocking catheter and a medicine injection catheter, the blocking catheter comprises an inner tube and an outer tube, the two ends of the outer tube are sealed, and the inner tube is connected into the outer tube in a penetrating mode; the medicine injection catheter is slidably connected into the inner tube; an infusion tube and a blocking tube are arranged between the inner tube and the outer tube; a front balloon and a rear balloon are arranged on the periphery of the outer tube at intervals, and the blocking tube is communicated with the two balloons; the outer tube is provided with a first medicine injection port between the two balloons, and the infusion tube is communicated with the first medicine injection port; the outer tube is provided with a blood inlet on the front side of the front balloon, a first blood outlet on the rear side of the rear balloon, and a second blood outlet between the front balloon and the rear balloon; a first valve is arranged at the blood inlet and only allows a medium to flow into the blood inlet unidirectionally; under the condition that the equipment can enter a target blood vessel, the efficiency and accuracy of medicine injection can be improved, normal flowing of blood is not affected in the process that the equipment enters the blood vessel, and blood diversion and blocking can be avoided.

The utility model relates to an adult simulation load device for online calibration of an extracorporeal membrane oxygenation system. The system comprises a left ventricular artery system simulation box, a right atrial vein system simulation box, a resistance device, a V-A ECMO treatment mode artery perfusion cannula, a V-V ECMO treatment mode vein perfusion cannula, a vein drainage cannula, a bottom plate, a right atrial vein system simulation box hydraulic monitoring sensor, a left ventricular artery system simulation box hydraulic monitoring sensor and a manual pressure release valve. And a ball valve pressurizing device and a vertical partition plate. The left ventricular artery system simulation box, the resistance device and the right atrial vein system simulation box are sequentially connected through pipelines. The device is simple in structure, convenient and practical to operate and capable of accurately simulating the blood volume of a patient, the pressure difference between a venous system and an arterial system and the resistance of a blood circulation system when an adult patient adopts a V-A ECMO treatment mode and a V-V ECMO treatment mode respectively, and has practical value; calibration data has clinical guiding significance, the measurement accuracy of key parameters of equipment is effectively guaranteed, and clinical risks are reduced.

This invention belongs to the field of extracorporeal circulation monitoring technology and discloses a multi-parameter linkage monitoring system for an artificial heart-lung machine, including an artificial heart-lung machine circuit, a detection component, an execution component, and a controller. The artificial heart-lung machine circuit includes a venous drainage line, a blood reservoir, a blood pump, a membrane oxygenator, an arterial perfusion line, and a gas supply line. The detection component is used to detect venous pressure, fluid level, pressure before and after the membrane oxygenator, arterial perfusion flow rate, blood oxygen, and gas supply pressure and flow rate. The controller performs time alignment on the detection signals within the same sampling period and, combined with changes in similar detection signals in adjacent sampling periods, distinguishes between insufficient drainage, increased membrane oxygenator resistance, and abnormal gas supply, outputting corresponding deceleration, speed limiting, gas supply adjustment, gas supply switching, pump shutdown, alarm, and lockout control signals. This system is used for linkage monitoring and control of abnormal sources in the extracorporeal circulation circuit.

The utility model discloses a pair of femoral artery minimally invasive intervention operation trousers, which comprises an operation trousers main body, and is characterized in that the front and the back of the crotch part of the operation trousers main body are respectively provided with a notch, the notches are connected with movable cloth pieces through zippers, the movable cloth pieces are divided into a front movable cloth piece and a back movable cloth piece, the front movable cloth piece is fan-shaped, and the back movable cloth piece is fan-shaped. The rear movable cloth piece is rectangular, and the front movable cloth piece and the rear movable cloth piece are connected together at the crotch part; hook-and-loop fasteners are arranged on the upper portions of trouser legs of the operation trouser body, suede surfaces of the hook-and-loop fasteners are sewn on trouser surfaces, movable sticky surfaces are flattened on the trouser legs at ordinary times, and the movable sticky surfaces are tightened and then adhered to the suede surfaces when people relieve the bowels. According to the utility model, the movable cloth piece before being pulled open can be used for exposing an arterial perfusion catheter and observing whether a puncture point wound has errhysis or not, so that clinical treatment operation is facilitated, and postoperative bedridden patients can urinate on the bed; meanwhile, the front movable cloth piece and the rear movable cloth piece are pulled open for the postoperative bedridden patient to defecate on the bed.

The present invention relates to a device, system and method for monitoring of peripheral arterial perfusion of a subject. To enable distinguishing between low pulsatility caused by centralization or low cardiac output, the proposed device comprises an input (30) for receiving first detection data of a tissue region of a subject, said first detection data being acquired over time by detecting radiation reflected from and / or transmitted through tissue of the subject, and for receiving second detection data of a skin region of subject, said second detection data being acquired over time by detecting radiation received from said tissue region in response to coherent light being emitted towards said skin region, a PPG unit (32) for deriving a photoplethysmography, PPG, signal from said first detection data, a flow unit (34) for deriving, from said second detection data, a flow signal indicative of a flow of light scattering particles within the skin region, and an evaluation unit (36) for evaluating said PPG signal and said flow signal to obtain information on the peripheral arterial perfusion, wherein the evaluation unit is adapted to determine a state of low vascular compliance and / or a state of low cardiac output based on a combined evaluation of said PPG signal and said flow signal.

An arterial perfusion device for radiation intervention relates to the technical field of medical instruments and comprises a mounting seat, the mounting seat is a rubber seat, the inner side face of the mounting seat is of an arc-shaped structure, a winding drum is fixed to the end of the mounting seat, a guide roller is rotatably connected to an opening of the winding drum, and a winding mechanism is mounted on the inner side of the winding drum. According to the arterial perfusion device for radiation intervention, the situation that blood circulation is affected by too tight constraint or limbs move due to too loose constraint can be avoided, the comfort level and safety of patient treatment are improved, the perfusion angle can be adjusted, wireless remote operation can be achieved, and the arterial perfusion device for radiation intervention is convenient to use. The radiation exposure time of an operator is shortened, the optimal infusion angle can be found, the treatment effect is improved, damage to the infusion tube caused by a traditional fixing mode can be avoided, meanwhile, displacement of the infusion tube is prevented, and accurate conveying of medicine is guaranteed.

The invention relates to the technical field of deep learning, in particular to an extracorporeal circulation data analysis method and system based on deep learning, and the method comprises the following steps: collecting pump rotating speed, pump flow, arterial perfusion pressure, arteriovenous blood oxygen saturation, hemoglobin and lactic acid, carrying out the time alignment, completing the time sequence coding, and forming state characterization; the method comprises the following steps: correcting a state evolution direction by combining a relationship between oxygen delivery and oxygen extraction, introducing a lactic acid change trend to constrain time sequence consistency, constructing a circulating resistance matching perfusion capability according to flow and pressure, continuously correcting a state change direction, and generating an operation state analysis result. Oxygen delivery and oxygen extraction constraints are introduced to correct state evolution, a lactic acid trend is combined to strengthen time sequence consistency, resistance constraints are formed by perfusion pressure and flow, perfusion capacity changes are continuously corrected, and nonlinear state expression stability and overall interpretation coherence are improved.

The invention aims at providing an implantable multifunctional arterial perfusion chemotherapy device and an intelligent adjusting system, and relates to the technical field of medical instruments, through cooperation of a double-port body structure and a plurality of balloon devices, the position of a catheter can be effectively fixed, displacement of the catheter is avoided, and the accuracy of drug delivery is ensured; the intelligent control system accurately adjusts the blood flow rate, the balloon inflation degree and the like, it is ensured that medicine can be evenly and effectively distributed to a tumor area, the medicine effect is maximized, and damage to healthy tissue is reduced; side effects such as medicine leakage and vascular injury are reduced, and the treatment safety is ensured; the external control terminal provides a simple and convenient operation platform for a doctor, helps the doctor to make treatment adjustment through real-time data feedback, and reduces the operation complexity in the treatment process; and the intelligent system automatically generates a personalized treatment scheme according to the physiological reaction of the patient, so that each patient can obtain the most suitable treatment scheme, and the treatment accuracy is further improved.

The invention relates to a non-invasive acute skin failure detector, system and method, and provides a silica gel wrist strap type non-invasive acute skin failure detector which can detect acute skin failure through a temperature sensor, a photoplethysmography sensor and a capacitance sensor which are integrated on the silica gel wrist strap type non-invasive acute skin failure detector. The skin temperature value, the capillary artery perfusion pressure and the skin water content are measured and calculated respectively, so that skin data of a patient are noninvasively detected and reported to a background, whether the patient has an acute skin failure symptom or not is judged through background prediction analysis, intervention measures are quickly given, clinical diagnosis and treatment efficiency can be greatly improved, and the clinical diagnosis and treatment cost is reduced. And intelligent auxiliary diagnosis and treatment are realized.

The present disclosure belongs to the field of cardiopulmonary resuscitation technology, and specifically relates to a cardiopulmonary resuscitation system and method based on non-invasive prediction of coronary perfusion pressure, comprising: an acquisition module configured to acquire electrocardiogram (ECG) signals and photoplethysmography (PEP) signals; an extraction module configured to decompose the acquired signals into different frequency bands based on discrete wavelet transform and extract features of the acquired signals; and a prediction module configured to construct a non-invasive prediction model based on a genetic algorithm, using information complexity as a fitness function, based on the extracted signal features and real-time coronary perfusion pressure, to obtain a predicted value of the coronary perfusion pressure and complete non-invasive prediction of the coronary perfusion pressure. The present disclosure predicts coronary perfusion pressure based on ECG signals and pulse signals, adjusts the compression depth of cardiopulmonary resuscitation in real time based on the obtained predicted value of the coronary perfusion pressure, and improves the robustness and adaptability of closed-loop automatic chest compression control.

The utility model provides a perfusion device for coronary artery perfusion operation, which comprises a perfusion tube, the A end of the perfusion tube is provided with a handheld handle, the B end of the perfusion tube is provided with a perfusion component for assisting perfusion, the perfusion component is internally provided with an adjusting cylinder connected with the perfusion tube, the adjusting cylinder is rotatably connected with the perfusion tube, and the handle is arranged on the handle. An adjusting mechanism for adjusting the rotation of the adjusting cylinder is arranged between the adjusting cylinder and the infusion tube; the adjusting mechanism comprises a first limiting seat, a second limiting seat, an adjusting piece, a limiting block, a fixing block, a sliding block and an adjusting wire. By means of the adjusting piece arranged in the adjusting mechanism, supporting force can be provided for the rotating angle of the adjusting cylinder and the infusion tube, so that when the adjusting cylinder is pulled by the adjusting wire to rotate, the adjusting piece can deform to act as counter-acting force with the adjusting wire, and then the adjusting cylinder can stably rotate along with movement of the adjusting wire; therefore, the adjusting cylinder drives the perfusion assembly to change the perfusion angle, and the purpose of widening the application range of the perfusion device is achieved.

The invention relates to a magnetic resonance imaging method based on pseudo-continuous arterial spin labeling, a medium and equipment. According to the magnetic resonance imaging method, on the basis of pseudo-continuous artery spin labeling, PCASL sequence parameters are optimized, then a multi-modal structure image is combined with a PCASL image, a heart artery blood perfusion weighted image is generated, and more accurate parameter estimation is obtained. Furthermore, a proper range is selected to optimize the acquisition sequence through parameter fitting, and the processing process of combining the acquired image and the PCASL image is optimized, so that motion artifacts and physiological noise can be effectively inhibited, the signal-to-noise ratio is improved, and accurate parameters can be acquired more quickly and efficiently. The cardiac artery blood perfusion weighted image generated by the method has various clinical applications such as coronary heart disease diagnosis, myocardial infarction evaluation, cardiac surgery evaluation, cardiac rehabilitation evaluation and the like.

The device comprises a main catheter and a micro catheter, a first through hole is formed in the main catheter in the axial direction, a first medicine injection port is formed in the wall of the rear end of the main catheter, a first medicine outlet is formed in the front end of the main catheter, and a second medicine outlet is formed in the rear end of the main catheter. A side opening is formed in the tube wall of the front end of the main catheter, and the first medicine injection port, the first medicine outlet and the side opening are all communicated with the first through hole; a first through hole is formed in the main catheter in the axial direction, a second through hole is formed in the micro catheter in the axial direction, the micro catheter is arranged in the first through hole of the main catheter in a penetrating mode, the front end of the micro catheter penetrates out of the side opening, a first fluid channel is formed between the inner wall of the main catheter and the outer wall of the micro catheter, and the second through hole serves as a second fluid channel. The utility model has the advantages that: the tumor in the visceral organs can be accurately hit, and the dosage of the medicine can be flexibly distributed according to the severity of the illness state of different parts in the visceral organs, so that the killing rate of normal cells is reduced.

The invention relates to the technical field of medicine, and provides an arterial perfusion tube for small animal in-vitro lung perfusion, which comprises a perfusion main tube group, the perfusion main tube group is U-shaped, the output end of the perfusion main tube group is fixedly connected with a conical insertion conical head, the top end of the conical insertion conical head is in the shape of a sharp-free smooth cone, and the top end of the conical insertion conical head is connected with the perfusion main tube group. The perfusion main pipe group is inserted into a pulmonary artery trunk of a mouse or a rat, and a rotating part for steering is arranged at the bottom of the middle end of the perfusion main pipe group; the output end of the first perfusion catheter is communicated with the input end of the main perfusion pipe set, and the input end of the first perfusion catheter is connected with a second perfusion catheter through an air filtering assembly so as to be connected into an external perfusion liquid supply part. The integral U-shaped smooth pipeline structure is adopted, and the device can naturally conform to the thoracic anatomy direction of an experimental animal in the implanting and connecting process, so that the infusion tube implanting process is remarkably simplified, the operation preparation time is shortened, and the dependence on the thoracic anatomy operation skill of an operator is reduced.

The present application relates to a target artery selective labeling method, device, electronic equipment and storage medium, comprising: acquiring a blood vessel positioning image of a target artery; determining a selective excitation pulse according to the blood vessel positioning image; and obtaining a perfusion map of the target artery by labeling according to the selective excitation pulse. The present application selects the position of the artery to be labeled, designs a selective excitation pulse targeting the artery based on a single-channel or multi-channel parallel emission platform, and applies the selective excitation pulse to the labeling section in the artery spin labeling sequence, thereby achieving the effect of selectively labeling a specific artery and obtaining a perfusion map of the specific artery.

This invention relates to the field of medical technology, specifically to a system and method for continuous measurement of arterial wall blood pressure and peripheral perfusion pressure. The system includes a data acquisition device, an angle detection device, a width adjustment device, and a data processing device. In this system, the two puncture needles of the acquisition device are positioned across both sides of the patient's artery. In actual operation, the two puncture needles cross the two sides of the artery. The expansion and contraction of the artery cause displacement of the tissues on both sides, resulting in an angle shift at the other end of the puncture needles. This displacement allows for the processing and acquisition of the patient's perfusion pressure data, providing a simple and effective way to monitor the magnitude of arterial perfusion pressure.

The utility model relates to the technical field of medical instruments, and discloses a hepatic artery infusion tube anti-folding protection instrument which comprises a first hard plate corresponding to the waist and abdomen, a second hard plate corresponding to the thigh and an angle adjusting mechanism, the end of the first hard plate is rotationally connected with the end of the second hard plate, the first hard plate is provided with a plurality of first bandages, and the second hard plate is provided with a plurality of second bandages. A plurality of second bandages are arranged on the second hard board, and the angle adjusting mechanism is used for adjusting and limiting the rotation angle between the first hard board and the second hard board. During application, the first hard plate is correspondingly bound with the waist and abdomen of a patient, the second hard plate is correspondingly bound with the thighs of the patient, and the first hard plate and the second hard plate are locked and positioned after the angle is adjusted to be in place through the angle adjusting mechanism; therefore, the angle between the waist, the abdomen and the thighs of a patient subjected to hepatic artery perfusion chemotherapy can be effectively positioned, and then displacement or bending of a hepatic artery perfusion tube caused by bending of the waist, the abdomen and the thighs of the patient is prevented.

1. Name of the designed product: syringe auxiliary device (arterial perfusion 1). 2. Use of the designed product: auxiliary device for increasing the friction of holding a syringe and facilitating force. 3. Design points of the designed product: in shape. 4. Picture or photo that best shows the design points: perspective view.

An arterial perfusion catheter for radiation intervention relates to the technical field of arterial perfusion and comprises a perfusion catheter body, valves are arranged on the inner side of the perfusion catheter body, the number of the valves on the same section is three, the three valves are arranged in a rotating array mode, and the three valves are arranged in a disc-shaped structure in a natural state. According to the arterial perfusion catheter for radiation intervention, injected liquid medicine can be buffered, so that secondary injury to a patient due to the fact that the liquid medicine injection speed is too high is avoided, the blood backflow phenomenon can be avoided, the use safety is good, and popularization is convenient.

The invention relates to the technical field of arterial perfusion catheters, in particular to a tumor interventional chemotherapy drug injection flow rate adjusting system based on hemodynamic force. In the process that the guide wire head moves to the designated position for drug release, the blood flow resistance parameter of each position is obtained, then the change coefficient of the blood flow resistance at the designated position is obtained, and then the internal blood flow resistance parameter and the collateral blood flow resistance parameter of the tumor target organ are obtained; and evaluating the adjustment reference value of the drug flow rate and early warning the adjustment of the drug flow rate. The blood flow resistance is assessed based on the proportional relation between the blood flow and the blood pressure, then the change of the blood resistance along with the diameter of the blood vessel is analyzed and assessed, the change coefficient is quantified to estimate the internal blood flow resistance and the bypass blood flow resistance in the tumor target organ, and then whether the medicine flow speed is adjusted or not is early warned. The medicine injection effect in the tumor interventional chemotherapy process is improved in an auxiliary manner.

1. Name of the designed product: syringe auxiliary device (arterial perfusion 2). 2. Use of the designed product: auxiliary device for increasing the friction of holding a syringe and facilitating force. 3. Design points of the designed product: in shape. 4. Picture or photo that best shows the design points: perspective view.

This invention relates to the field of medical research based on cadaver specimens, specifically disclosing a method for arterial perfusion of veins from cadaver specimens based on ink and an automated arteriovenous differential colorimetric perfusion reagent. The perfusion reagent includes ink and a base perfusion solution, wherein the base perfusion solution is a latex, gelatin solution, or other base perfusion solution that can pass through the capillary network and does not affect the color-changing effect of the ink. This invention innovatively discovers that the perfusion solution containing ink undergoes a color change as it flows from the artery into the vein. Utilizing this principle, a one-step method for arterial perfusion of veins from cadaver specimens is provided. This method is simple to operate, requiring only one artery puncture and one perfusion solution, and is less likely to cause dilation or deformity of the vein after perfusion. The anatomical field of view is clear, and perfusion can be terminated when the perfusion solution mixture flows out of the vein. After perfusion, the artery and vein exhibit different colors, and the color difference is visually discernible, thus achieving differential display of arteries and veins.

The invention relates to medicine, and more particularly to cardiology, neurology and pulmonology, and can be used for examining the reaction of an organism to metered hypoxic hypercapnia, in particular for evaluating cerebral vessel reactivity and cerebral perfusion reserve, as well as for carrying out hypercapnic training aimed at increasing the resistance of an organism to adverse stress factors and preparing for surgical interventions involving a temporary restriction of the blood flow through the arteries supplying the brain, and for treating diseases, in particular cerebrovascular disorders, coronary perfusion disorders, hypertensive disease, respiratory insufficiency, and the like. Claimed is a device for inducing hypoxic hypercapnia containing cells that are configured in the form of helically twisted channels, wherein each channel forms one cell and is twisted along a helical path at an incline to the plane of the base of a cylinder in such a way that the inlet and the outlet of each channel are vertically diametrically opposed, and wherein a cylindrical housing is provided in the form of a module, the bottom part of which is formed in such a way as to be capable of interfacing with the top part of an identical module.