949 results about "Blood circulating" patented technology

The invention discloses a burn and plastic negative pressure wound debridement and healing promoting device which is characterized in that the device comprises an application, a double-shaped connecting assembly and a negative pressure suction unit, the negative pressure suction unit comprises a base, a hollow column, a rotary driving mechanism and a negative pressure machine, a mounting cavity is formed in the base, a plurality of air pipe joints are arranged on the base in the longitudinal direction, and the air pipe joints are connected with the hollow column. The hollow column is vertically installed on the base, a plurality of negative pressure holes communicated with the interior are evenly formed in the hollow column in the circumferential direction at intervals, the negative pressure holes correspond to the air pipe joints one to one, and the negative pressure holes in the hollow column are sequentially communicated with inner ports of the corresponding air pipe joints in the clockwise direction; the invention aims to promote blood circulation and healing of burn and plastic wounds through a dynamic negative pressure technology, reduce infection risk, improve treatment effect and patient comfort, and realize repeated disassembly and assembly of the application.

The utility model relates to the technical field of knee joint braces, in particular to a self-adaptive intelligent knee joint brace. The utility model discloses a self-adaptation knee joint intelligent brace, including the splint subassembly that is used for respectively fixed on the both sides of affected limb, the bandage subassembly that can adjust the degree of tightness and main control panel, bandage subassembly includes bandage, bandage degree of tightness adjustment device and pressure sensor, bandage connects splint subassembly, is used for fixing the two splint subassembly on the both sides of affected limb, and the pressure sensor is used for the pressure sensor to adjust the degree of tightness of bandage. The pressure sensor is used for detecting the contact pressure between the bandage or the clamping plate assembly and the affected limb and transmitting the contact pressure to the main control board, and the main control board is used for controlling the bandage tightness adjusting device to correspondingly tighten and tighten the bandage according to pressure data collected by the pressure sensor. The knee joint rehabilitation device can automatically adjust the tightness of the bandage in real time, not only can stably support the knee joint and the meniscus, but also can avoid damage to blood vessels and nerves and pressure sores, ensure blood circulation and improve the rehabilitation effect, is convenient and comfortable to use, and greatly improves the user experience.

The invention discloses a temperature self-adaptive control system for organ perfusion, and belongs to the technical field of temperature control, and the system comprises a sampling unit which is used for converting analog signals of temperature, flow velocity and pressure of one or more target nodes in perfusion blood circulation into digital signals to form an initial data set; the calculation unit is used for performing wavelet transformation and moving average processing on the initial data set to construct a feature matrix, and establishing a temperature change prediction model based on the feature matrix so as to determine a temperature compensation amount in combination with dynamic correction; and the temperature control unit is used for adjusting the temperature control power by adopting a progressive strategy based on the temperature compensation amount and synchronously adjusting the blood flow rate so as to dynamically optimize the control parameters according to the temperature control effect. Through the scheme of the invention, the real-time regulation and control precision can be improved, and the quick response capability to temperature mutation is enhanced.

The invention discloses a method for controlling the compaction degree of a left heart and a right heart in an extracorporeal circulation operation, which comprises the following steps of: in an in-vitro environment, mounting a peristaltic pump at a left heart inlet and a right heart inlet of an extracorporeal circulation device; a liquid inlet of the peristaltic pump is connected with a liquid inlet pump, and a liquid outlet of the peristaltic pump is connected with a liquid outlet pump; and finally, a first pressure measuring structure and a second pressure measuring structure are arranged on the sides, away from the peristaltic pump, of the liquid inlet pump and the liquid outlet pump correspondingly, and the pressure of the liquid inlet pump and the pressure of the liquid outlet pump are adjusted to be-20 mmHg. The negative pressure of the liquid inlet pump is adjusted through the first pressure measuring structure, and the negative pressure of the liquid outlet pump is adjusted through the second pressure measuring structure, so that the purpose of quantifying the adjusting mode is achieved, and the adjusting mode is accurate, rapid and high in reliability; the peristaltic pump can effectively avoid the occurrence of risks such as blood component damage, hemolysis, gas embolism and the like caused by reduction of the amount of blood conveyed by the pump, insufficient blood supply or direct interruption of blood circulation due to the condition that a pipe body connected with the peristaltic pump is shrunken or cannot be sucked during an operation.

The invention belongs to the technical field of medical equipment, and particularly relates to a cardiovascular intervention postoperative radial artery compressor which comprises a U-shaped base, a rubber sleeve is fixedly connected to the inner wall of the bottom end of the U-shaped base, a metal iron plate is fixedly connected to the upper surface of the rubber sleeve, and an auxiliary mechanism is fixedly connected to the outer wall of the metal iron plate. The radial artery compressor has a compression force visualization function, can help medical care to precisely regulate and control compression force, formulate a personalized scheme, facilitate real-time monitoring and data analysis, reduce the complication risk of a patient and improve the nursing effect, also has a skin heat preservation function, can promote local blood circulation, accelerate wound healing and relieve discomfort of the patient, and has a good application prospect. And the compressor has the functions of stabilizing a punctured arm and adjusting the height, and is beneficial to venous return, swelling reduction, reduction of blood deposition at a puncture point and improvement of the use reliability and effect of the compressor.

A system for assisting a circulation of blood inside a body of a patient includes a pump including: a housing having an upstream portion and a downstream portion; an inducer positioned in the upstream portion of the housing, the inducer including one or more helically-wound inducer blades to rotate around a longitudinal axis of the pump; an impeller positioned downstream of the inducer in the housing, the impeller including one or more impeller blades to rotate around the longitudinal axis of the pump; and a diffuser positioned in the downstream portion of the housing, to direct blood through at least one aperture in a circumference of the housing.

The invention provides a preparation composition of a glucagon-like peptide-1 receptor agonist for nasal mucosa administration, and particularly relates to the technical field of biological medicine materials. The preparation composition mainly comprises a glucagon-like peptide-1 receptor stimulant, alkyl glycoside and phospholipid, wherein the ratio of the glucagon-like peptide-1 receptor stimulant to the alkyl glycoside to the phospholipid is (0.25-17.5): (0.25-10): (0.1-10) by mass. The active pharmaceutical ingredients in the preparation composition provided by the invention are delivered through nasal mucosa, directly enter blood circulation from an absorption part, can take effect quickly, have higher bioavailability, and improve the compliance of patients.

The invention discloses a closed-loop hemodynamic regulation imaging system and method for ultrasonic stimulation of peroneal nerves, and belongs to the technical field of ultrasonic stimulation regulation, and the system comprises a pulse Doppler ultrasonic imaging module, an ultrasonic stimulation parameter configuration module, a power supply module, an ultrasonic stimulation module, a feedback control module and an upper computer display module, the pulse Doppler ultrasonic imaging module is configured to perform color pulse Doppler imaging on the popliteal artery and the popliteal vein to obtain hemodynamic information of the two; the ultrasonic stimulation parameter configuration module is configured to receive the real-time ultrasonic stimulation parameters transmitted by the feedback control module and transmit the real-time ultrasonic stimulation parameters to the ultrasonic stimulation module through electric signals while configuring the real-time ultrasonic stimulation parameters according to the real-time ultrasonic stimulation parameters. According to the invention, hemodynamic real-time observation of ultrasonic stimulation of the peroneal nerve, the popliteal artery and the popliteal vein can be simultaneously carried out, automatic adjustment of hemodynamics can be realized by using a fuzzy logic control algorithm, blood circulation of legs is improved, and real-time and convenient adjustment effect detection is provided for ultrasonic stimulation of the peroneal nerve.

The invention relates to the technical field of disease rehabilitation assessment, and discloses a functional behavior-based assessment and rehabilitation system for lower limb artery occlusion, which is characterized in that gait data, muscle force data, blood flow change data and electromyographic signal data of a patient are acquired by arranging a data acquisition module, and a rehabilitation assessment report of the patient is generated by using a multi-modal fusion algorithm; and the artery occlusion degree, the lower limb blood circulation condition and the motion function state of the patient are comprehensively evaluated. On the basis, the system generates a personalized exercise scheme through a reinforcement learning algorithm, and dynamically adjusts the exercise scheme according to the real-time exercise data feedback of the patient, so as to ensure the effectiveness and safety of the rehabilitation scheme. Meanwhile, the system provides a guide feedback module, the patient is guided to complete the correct motion posture through voice, vision or vibration prompts, and secondary injury caused by improper motion posture is avoided. By dynamically optimizing the exercise scheme and guiding feedback in real time, personalized rehabilitation guidance of the patient is achieved, and the rehabilitation effect and exercise compliance are improved.

The invention relates to the technical field of medical drainage equipment, in particular to in-vivo effusion drainage equipment for breast surgery, which comprises a storage rack, a pair of drainage tubes and an overclothes for a patient to wear, two drainage bottles are placed in the storage rack, a box body is arranged at the top of the storage rack, and a driving mechanism is arranged in the middle of the interior of the box body; two first gas distribution mechanisms and two second gas distribution mechanisms are arranged in the box body and are symmetrically arranged relative to the driving mechanism. The first air distribution mechanism is driven by the driving mechanism to work to inflate and deflate the pressing air bag set, automatic pressing can be conducted on the mammary gland portion of an operation area of a patient, effusion can be rubbed away, accumulation of the effusion in mammary gland tissue is avoided, hematoma or blood clots are reduced, and the effusion is discharged more effectively; blood circulation and metabolism of surrounding tissues are promoted through pressing, swelling of an operation area is eliminated, postoperative pain and discomfort of a patient are relieved, swelling of the patient is relieved, and the healing process of the tissues is improved.

Devices and methods for tissue treatment produce a mechanical stimulation therapy and electromagnetic field therapy. The mechanical stimulation therapy provides stimulation of blood circulation and stimulates treated cells. The electromagnetic field enables thermal treatment of tissue. Combination of both therapies improves soft tissue treatment, mainly connective tissue in the skin area and fat reduction.

The invention belongs to the technical field of biological medicines, and particularly discloses a nano-engineering T cell membrane coated nano-particle as well as a preparation method and application of the nano-engineering T cell membrane coated nano-particle. Nanoparticles of a specific structure are constructed based on a phospholipid bilayer bionic nanometer platform through a membrane fusion technology, immune clearance caused by phagocytosis of the nanoparticles by macrophages can be avoided through disguise of a T cell membrane, and the blood circulation time is prolonged; the functions of T cells are recovered through specific blocking of immune checkpoint molecules loaded on the immune checkpoint molecules on corresponding immune checkpoint ligands on tumor cells; under ultrasonic radiation, the nano-particles are gradually decomposed and release the sound-sensitive agent to generate a large amount of active oxygen, so that immunogenic death of tumor cells is promoted, more cytotoxic T lymphocytes are recruited to infiltrate into tumor parts, and the recovery of T cell mediated immune response function is facilitated. The synergistic effect of the sound-sensitive agent and the immune checkpoint protein can effectively inhibit tumor growth, induce a long-term immune memory effect and prevent tumor metastasis and recurrence.

The invention belongs to the technical field of biomedicine, and particularly relates to an alpha-cyperone bionic nano preparation as well as a preparation method and application thereof, the alpha-cyperone bionic nano preparation is prepared from a polylactic acid-glycolic acid copolymer, alpha-cyperone, a bionic membrane and follicle-stimulating hormone polypeptide, the biomimetic membrane is characterized in that alpha-cyperone is loaded on a polylactic acid-glycolic acid copolymer, the biomimetic membrane is biologically camouflaged on the outer layer, then the biomimetic membrane is modified by follicle-stimulating hormone polypeptide, and the amino acid sequence of the follicle-stimulating hormone polypeptide is as shown in SEQ ID NO.1. According to the alpha-cyperone bionic nano preparation disclosed by the invention, the alpha-cyperone is loaded by utilizing the polylactic acid-glycolic acid copolymer, so that the alpha-cyperone is easily dissolved in water, and the blood circulation half-life period is prolonged and the targeting capability of an ovary part is improved through biological camouflage of the bionic membrane; the modification of the follicle-stimulating hormone polypeptide further improves the targeting ability to granulosa cells, and liver and kidney toxicity and muscle injury are not found in the experiment process.

The utility model discloses an ankle joint fixator capable of massaging, which comprises a sole supporting part and a leg supporting part, and belongs to the technical field of medical auxiliary treatment equipment. According to the utility model, the massage device is arranged on the leg supporting part, so that the legs of a patient can be heated and massaged, and blood circulation is promoted; a plurality of air holes are formed in the leg supporting part, so that air circulation can be increased, and local ventilation and dryness are kept; the foot sole supporting part and the leg supporting part are movably connected, the angle between the foot sole supporting part and the leg supporting part can be controlled by adjusting the length of the telescopic rod during wearing, and a patient is better helped to play a fixing and supporting role.

The invention discloses a medicine for treating bedsore and application thereof.The medicine is prepared from parthenocissus tricuspidata, clove, radix aucklandiae and borneol, the parthenocissus tricuspidata serves as a monarch drug and has the effects of promoting blood circulation, removing toxins, removing blood stasis, dredging collaterals, improving local blood circulation of bedsore, promoting inflammation fading, dissolving sore and ulcer toxins and repairing damaged tissue; the clove is used as a ministerial drug to expel pus and engender tissue, inhibit wound infection and promote healing of ulcerated wounds; the radix aucklandiae is used as an adjuvant drug for promoting qi circulation, promoting blood circulation and promoting qi hyperactivity and blood circulation, and the radix aucklandiae is used as a monarch drug for removing stasis and dredging collaterals to nourish tendons and meat; borneol is used as an assistant drug, is used for resisting bacteria, relieving pain and promoting healing of non-healing after bedsore ulceration, and also can be used as a meridian guiding drug to enhance the seepage force of the drug so as to promote external transdermal absorption of the drug. Through simple composition and reasonable compatibility of the medicines, local qi and blood stasis of bedsores can be improved and wound healing can be promoted through the multi-target effect by activating blood and detoxifying, expelling pus and promoting tissue regeneration and inhibiting bacteria to control infection, so that the bedsores can be effectively treated.

The utility model relates to the technical field of lifting pads, and discloses a lifting pad with a lifting function, which comprises a component placing mechanism, the component placing mechanism comprises a placing plate, thigh placing mechanisms are rotatably arranged in the middle of two sides of the placing plate close to one end, and each thigh placing mechanism comprises a positioning rod. Thigh telescopic plates are fixedly arranged between the two sides of the positioning rod, a first connecting rod is fixedly arranged at the end, away from the positioning rod, of each thigh telescopic plate, a first connector is rotationally arranged on the inner wall of each first connecting rod, and a knee joint placement mechanism is rotationally arranged at the other end of each first connector. According to the device, the length of each mechanism can be adjusted in time according to the length of the leg of a person, the height can be adjusted, the two legs can be supported at the correct positions, fatigue and pressure of the legs are relieved, blood circulation is promoted, wound healing is accelerated, the requirements of different people are met, and corresponding cost is saved.

The invention relates to a specially selected strain and application thereof in cardiovascular and cerebrovascular maintenance. The invention provides a specially selected strain-prebiotic composition for enhancing and maintaining an ozone high-dose blood purification effect and application of the specially selected strain-prebiotic composition in establishment of an intestinal barrier function and health maintenance of heart and cerebral vessels. According to the invention, blood cell metabolism, immune system and antioxidant enzyme system can be activated by autologous blood circulation reinfusion, the state of the blood vessel wall is improved, and the physiological function of blood cells is enhanced; the specially selected targeted strain-prebiotic composition can regulate intestinal flora balance, establish an intestinal barrier function, maintain and accelerate metabolism of a human body, decompose blood fat and toxin garbage accumulated in the body, promote detoxification of the intestinal tract, purify the intestinal tract and reduce intestinal toxin substances entering the blood circulation of the human body through a portal system. According to the combination scheme, the blood purification effect can be remarkably improved, the blood fat index is remarkably improved, the purposes of recovering the blood vessel function and enhancing the human immune function are jointly achieved, a new technical scheme and means are provided for prevention and treatment of cardiovascular and cerebrovascular diseases, and wide application prospects are achieved.

The treatment system includes a limb sleeve containing a heating subsystem, a pressure subsystem, and a vibration subsystem. The heating subsystem provides controlled cyclic heating to the limb, leading to dilation of the microvasculature and improved blood flow to nerve receptors. The pressure subsystem provides progressively staged, cyclic pressure to the limb, thereby improving blood circulation to the limb, reducing edema buildup, and flushing waste out the lymphatic system. The vibration subsystem provides controlled vibrotactile sensation to the limb to promote neuronal stimulation and decrease pain sensation. The treatment system allows for a multi-faceted approach in disease stabilization and assistive, personalized treatment for peripheral neuropathy.

Systems and methods are provided for non-invasively measuring one or more hemodynamic variables using a peripheral arterial region wearable device having a strain sensor and a photoplethysmogram sensor. Different line fit profiles are determined from device collected signals indicative of the strain response versus externally applied cuff pressure and the blood volume and / or the blood circulation changes versus externally applied cuff pressure. From these line fit profiles, external cuff pressure affected line fit features are determined, from which hemodynamic variables for the peripheral arterial region such as blood pressure and / or a systemic vascular resistance are then determined.

The invention relates to the technical field of bone surgery, in particular to a bone surgery fracture correction device which comprises a first support and three guide rods, the three guide rods are installed at the bottom of the first support at equal intervals in the circumferential direction and are hollow, and the inner walls of the guide rods are in threaded connection with a bone setting mechanism; left and right opposite connecting clamps are installed on the inner side of the first support and the inner side of the bone setting mechanism respectively, the first support and the inner side of the bone setting mechanism are locked through the connecting clamps and steel needles penetrating through bones, the bone setting mechanism is made to adjust the distance between fracture connecting positions, clamping devices are installed on the outer walls of the first support and the outer wall of the bone setting mechanism respectively, and one end of an adjuster is installed at the front end of each clamping device; a heating mechanism is mounted at the other end of the adjuster, and blood circulation at the fracture position is promoted through the heating mechanism; the bone setting mechanism comprises a second support. The growth space of the callus is accurately adjusted, the bone is firmer after rehabilitation, the infrared heating lamp is dynamically heated, the skin is prevented from being burnt due to continuous heating, the dynamic temperature can better promote blood circulation, and the rehabilitation period is shortened.

The invention discloses a method, a device, equipment, a medium and a product for determining hemodynamic indexes of a blood circulation system under the action of an acceleration field, and relates to the technical field of hemodynamics, the method comprises the following steps: constructing a one-dimensional topological model and a 0-dimensional connection model of main artery and vein blood vessel networks, and assigning parameters to obtain a 0-1-dimensional coupling basic model; iteratively solving by combining the simplified model of the basic model, the objective function and the physiological measured data to obtain individualized model parameters of the subject, and assigning the individualized model parameters to the basic model; extracting geometric topology information of the blood vessel network of the concerned part based on iconography information and assigning the geometric topology information to a corresponding position of the 0-1-dimensional model; the acceleration equivalent to the real environment is applied, the individualized 0-1-dimensional model control equation of the subject is solved, the hemodynamic indexes of the blood circulation system under the action of the acceleration field are obtained, and the hemodynamic changes of the arteriovenous system and the blood supply conditions of all important organs of the subject under the action of the acceleration can be accurately and quantitatively evaluated.

The invention relates to the technical field of ointment smearing, in particular to an ointment smearing device for lupus erythematosus skin lesion, which comprises an ointment storage tube, a smearing plate and an ointment inlet, the ointment storage tube is connected with the smearing plate, the ointment inlet is connected to the ointment storage tube, ointment is injected into an ointment storage barrel through the ointment inlet, the ointment storage tube is used for storing the ointment, and the smearing plate is used for smearing a wound of a patient. The measuring assembly is connected to the medicine storage tube and used for measuring the size of a wound of a patient, then the ointment smearing amount can be adjusted according to the size of the wound of the patient, the adjusting assembly is connected to the medicine storage tube, the adjusting assembly is started according to the wound size measurement result of the measuring assembly, and the adjusting assembly is used for adjusting the medicine storage volume in the medicine storage tube. The adjusting assembly is started according to the size of the wound measured by the measuring assembly, the adjusting assembly can adjust the medicine storage capacity of the medicine storage tube, ointment can be injected into the medicine storage tube through the medicine inlet, and the situation that the medicine permeates into blood circulation to cause untoward effects on the whole body due to the fact that excessive ointment is smeared on the wound of a patient is avoided.

The invention belongs to the technical field of medical equipment, and relates to an orthopedic emergency treatment splint fixing device, which comprises four arc-shaped splints, two clamping plates, four groups of clamping strips and two auxiliary plates, each first distance adjusting mechanism is used for adjusting the distance between the two connecting strips which are oppositely arranged so as to adapt to increase and decrease of swelling at different positions of the upper arm and the front arm; and the second distance adjusting mechanism is used for adjusting the distance between the two auxiliary discs so as to adapt to increase and decrease of elbow joint swelling. The distance between the two oppositely-arranged connecting strips can be adjusted respectively, the two oppositely-arranged clamping strips can adapt to increase and decrease of swelling of different positions of the upper arm and the forearm of a patient through rotating connection of the two adjacent connecting strips, meanwhile, the distance between the two auxiliary discs is adjusted, increase and decrease of elbow joint swelling are adapted, and the patient can feel more comfortable. Blood circulation disorder, fracture broken end displacement and the like of the affected limb caused by too tight or too loose clamping of the affected limb are avoided, and the pain of a patient is relieved.

The invention provides a stepped ventricle auxiliary circulating pump device, relates to the technical field of heart blood pumps, and provides a structure that a heart blood pump is arranged in a heart chamber and below an aortic valve or a pulmonary valve, and a stepped motor and an axial flow channel are designed on the basis, so that a blood flow channel is formed between the motor and the axial flow channel; the blocking influence of the size of the motor above the aortic valve or the pulmonary valve on the blood circulation process can be effectively avoided, and the amount of blood pumped out of the aortic valve or the pulmonary valve is effectively increased.

The invention discloses a cardiac postoperative rehabilitation training device. Comprising a base, a bearing chair arranged on the base and used for bearing a patient, a massage mechanism arranged on the bearing chair, an upper limb lifting exercise mechanism and an upper limb horizontal extension exercise mechanism which are arranged on one side of the bearing chair, and a leg pedaling type exercise mechanism arranged in front of the bearing chair and connected with the base. The bearing chair comprises an angle-adjustable backrest, the backrest is connected with a first driving unit used for controlling the inclination angle of the backrest, by arranging the multiple exercise mechanisms, a patient can conduct comprehensive training of multiple actions, limb blood circulation is effectively promoted, the cardiopulmonary function is increased, and the patient can conduct comprehensive training of multiple actions; the early rehabilitation of the patient after the cardiac surgery is facilitated; various training actions are combined, the body of a patient can be exercised more comprehensively, the situation that the rehabilitation training effect is poor due to the single training action is avoided, and the rehabilitation training effect is improved.

The invention belongs to the technical field of orthopaedic orthopaedics, and particularly discloses a reduction and fixation orthopaedic orthopaedic device for orthopaedics, the upper side and the lower side of a positioning part are slidably connected with sliding rods, the side, close to the sliding rods, of the positioning part is fixedly connected with an adjusting part, and the positioning part comprises two positioning frames. According to the reduction and fixation orthopedic equipment for the orthopedics department, the positioning component is arranged, and a cooling mechanism is arranged in the middle of the inner side of the positioning frame, so that ice compress detumescence can be directly carried out on a bruise position, local swelling and pain caused by fracture or correction operation of a patient are relieved in time, local blood circulation is promoted, and favorable conditions are created for bone healing; when the positioning frame is worn for a long time, the contact mechanism can massage and relieve the corresponding part of the patient, muscle stiffness and discomfort caused by long-time fixation are relieved, the wearing comfort of the patient is improved, and the patient can better cooperate with treatment.

The cervical vertebra rolling and swinging massage therapeutic apparatus comprises a shell, the top of the shell is of an open structure, a main rocker and an auxiliary rocker are arranged in the shell, the bottom of the main rocker and the bottom of the auxiliary rocker are both hinged to the lower wall in the shell, and a headrest is fixedly installed at the upper end of the main rocker and the upper end of the auxiliary rocker. A main rocker is arranged in the shell, a swing assembly connected with the main rocker is arranged in the shell, a step structure is arranged on the side, away from the headrest, of the shell, a sliding frame is arranged on the step structure in a sliding mode, and a pair of supports are arranged on the two sides of the sliding frame. The principle of the massage instrument is that rolling massage is carried out according to the natural force of self-weight counter-acting force generated when the head and the neck of each person lie flat, no external force is applied, the massage instrument is natural and smooth, and through the unique stretching and reciprocating rolling massage mode, symptoms of cervical spondylosis patients can be effectively relieved, the natural curvature of the cervical vertebra is improved, qi and blood circulation is promoted, and local blood circulation is improved. The overall health of the body is promoted.

The invention discloses an integrated femoral arteriovenous intubation device and a using method thereof, and belongs to the technical field of medical instruments.The integrated femoral arteriovenous intubation device comprises a puncture needle, a drainage apparatus, an intubation piece and a guiding piece, and a first channel is formed in the intubation piece; the first end of the guide piece penetrates through the second end from the first end of the cannula piece, and the puncture needle is sleeved at the first end of the guide piece; the puncture needle comprises a first half tube body and a second half tube body, the first half tube body and the second half tube body are detachably connected, and the drainage device is installed on the first half tube body; a second channel is formed between the inner wall of the first half tube body and the inner wall of the second half tube body, at least part of the guiding piece is arranged in the second channel, and the second channel is communicated with the drainage device and the first channel. A small hole is formed in a blood vessel through a puncture needle, and whether blood vessel selection is correct or not is judged by observing blood color through a drainage device; the puncture needle can be moved out in a tearable mode, the guide piece guides the tube inserting piece to be inserted into a blood vessel, and minimally invasive in-vitro blood circulation is achieved.

The invention discloses a wearable device for preventing formation of lower limb venous thrombosis, relates to the technical field of venous thrombosis protection equipment, and provides the following scheme that the wearable device comprises a thigh clamping sleeve, and a shank clamping sleeve is arranged below the thigh clamping sleeve; knee joint driving parts are fixedly connected to the right side surfaces of the thigh clamping sleeve and the shank clamping sleeve, and 2-3 vein restraint straps are arranged on the rear side surface of the shank clamping sleeve. The upper clamping sleeve and the lower clamping sleeve are arranged to wrap the thigh and the shank, and the knee joint driving component is used for driving the two clamping sleeves to rotate mutually in an electric and gear transmission mode, so that bending between the thigh and the shank is assisted, blood circulation of the leg is assisted, and venous thrombosis is prevented; in addition, the vein restraint strap is arranged on the shank part, the binding force of the shank part is gradually reduced from bottom to top in the mode of expanding the strip-shaped air bag, and therefore flowing of blood in veins is accelerated.

The invention discloses a double-ring circulation system for in-vitro drainage test of an in-vitro membrane pulmonary oxygenation vein drainage tube, and belongs to the technical field of medical engineering. According to the invention, the blood circulation simulation module can accurately load and simulate the blood flow waveform of the inferior vena cava of a human body under physiological or pathological conditions, and the vein drainage module can effectively simulate the drainage effect of extracorporeal membrane oxygenation vein drainage and is used for evaluating the drainage effect. According to the double-circulation system, by replacing the rigid / elastic vein simulation tube, the influence rule of the drainage mode of the vein drainage tube on the drainage efficiency and the vein adherence problem is explored. And a more scientific and effective in-vitro test evaluation experiment platform is provided for effectively evaluating the hydrodynamic performance when the drainage hole of the vein drainage tube is blocked and improving the drainage efficiency of the vein drainage tube.