365results about How to "Prevent blood clots" patented technology

Atrial appendage occlusion devices and arrhythmia treatment.

The invention provides bacillus velezensis as well as a separation screening method and application thereof, and belongs to the field of microbe technology and food processing. The invention providesthe bacillus velezensis with high fermentation capability; the bacillus velezensis is obtained through screening; during the fermentation, the capability of high yielding protease, amylase and fermented bean plasmin is realized; the bacillus velezensis can be applied to food fermentation in a large scale when being prepared into a food fermentation strain; fermentation food obtained through fermentation by using the bacillus velezensis, the contents of free amino acid and douchi fibrinolytic enzyme are high; the nutrition is rich; the characteristics of easy digestion, thrombus prevention andthe like are realized.

The invention relates to a special axial flow pump, in particular to a heart auxiliary device of an axial magnetic force unloading type axial flow pump in the field of biomedical engineering. The heart auxiliary device is implanted into the human body. The auxiliary device is a pump-machine combination body and is composed of a pump system and a motor system. The heart auxiliary device is characterized in that an impeller position control soft magnet is installed at the rear end of a stator core, when an impeller moves forwards or backwards due to external force in a pump cylinder, the impeller position control soft magnet and the stator core generate magnetic constraining force on a permanent magnet rotor in an impeller hub, and the direction of force is opposite to the axial moving direction of the impeller. When the axial flow pump works, the magnetic constraining force can form partial and even whole axial magnetic force unloading on axial force loads of the impeller and a shaft, and axial magnetic levitation of the impeller is achieved. According to the heart auxiliary device of the axial magnetic force unloading device, mechanical abrasion and the friction heat effect can be reduced, the thrombus in the pump is prevented from being formed, complications are reduced, the service life of the axial flow pump is prolonged, and stability of continuous work is improved.

The invention discloses a lower limb vein thrombosis prevention and treatment instrument and relates to the field of medical instruments. The lower limb vein thrombosis prevention and treatment instrument comprises a lower limb cushion and a massage device. The lower limb cushion comprises a shank cushion plate and a thigh cushion plate which are hinged. The thigh cushion plate is connected with an adjusting rod penetrating through a fixed seat. The massage device comprises a main machine and a leg sleeve. The main machine comprises a box internally provided with an electromagnetic air pump, an electromagnetic water pump, an electronic temperature adjusting device and a constant-temperature water tank. A panel of the box is provided with a time control instrument, a pressure dial gauge, a pressure adjusting valve and a temperature control instrument. The time control instrument, the pressure dial gauge and the pressure adjusting valve are connected with the electromagnetic water pump, and the temperature control instrument is connected with the electronic temperature adjusting device and the electromagnetic water pump. The leg sleeve comprises an air bag communicated with the pressure adjusting valve, and a cushion blanket arranged on the surface layer. The problems that in the prior art, the angle and the height of a lower limb cushion cannot be adjusted, the lower limb is prone to slide down from the two sides, the popliteal space is prone to be pressed, blood circulation is affected, and the cold-proof and heat preservation effect on the affected limb is poor and the problem that the inflation and deflation pressure of a pressure anti- thrombosis pump cannot be adjusted at any time are solved.

The invention discloses blueberry black tea. Blueberry leaf blades serve as a raw material, and the blueberry black tea is prepared through the process of fresh leaf picking, withering, cell disruption, fermentation, roasting, shaping and drying and the like. The blueberry black tea does not contain caffeine, made tea water is savoury and mellow in taste and rich and gaudy in color, plenty of flavonoids are contained in the tea, and the blueberry black tea has the health care effects of restraining platelet aggregation, preventing thrombus and atherosclerosis, directly restraining generation of free radicals, preventing aging and being resistant to cancers and radiation and antiallergic and the like.

The present invention relates to a double-suction microminiature paddle pump. It is characterized by that its pump paddle wheel and motor rotor are formed into one body, the centre of said motor rotor is equipped with two paddle wheel inlets which are respectively communicated with pump paddle wheel, the cross-sectional area of said two inlets is progressively expanded along flowing direction; said two paddle wheel inlets ar respectively communicated with two suction inlets of pump. Said pump has no need of mechanical drive shaft, and can implement high-effective and safety conveyance.

The invention relates to an isolated organ perfusion system and a liver storage device. The liver storage device comprises a container body and a breathing air bag. The container body is used for containing perfusate. The breathing air bag is arranged in the container body and used for supporting an isolated organ. According to the liver storage device, the breathing air bag is additionally arranged in the liver storage device, the isolated organ is placed on the breathing air bag, breathing and inhaling of the isolated organ are simulated during perfusion, and the breathing air bag is subjected to air suction and inhaling, so the breathing air bag is continuously relaxed in the perfusion process, and the point of the contact surface of the isolated organ and the breathing air bag is correspondingly changed; and thus, blood circulation of the isolated organ can be smoother in the perfusion process, thrombus generated on the surface of the isolated organ due to long-time fixed pressureis avoided, an invalid perfusion area can be effectively eliminated, and continuous local compression necrosis is reduced.

The invention relates to a selenium-rich medicinal herb feed additive. The additive is characterized by comprising the following components: polygonum multiflorum, sophora flavescens, cyrtomium rhizome, coptis, pine needle, epimedium, kudzuvine leaf, sweet wormwood, honeysuckle and cibotium barometz. The selenium rich medicinal herb feed additive is a feed additive prepared by using Hubei Enshi selenium rich medicinal herbs as raw materials; the medicinal herbs are medicaments and natural products and contain multiple minerals and vitamins, so the additive has an effective effect of a feed additive and can become a unique feed additive; various animals freely eat the medicinal herbs in field; and the additive can promote the growth of the animals, prevent and treat diseases, enhance the disease resistance of the animals and condition the physiological functions of the animals.

The invention relates to a third generation PCI therapeutic saccule support system, a preparation method and application, and belongs to the field of biomedical engineering. The therapeutic saccule support treatment system comprises a catheter and a saccule, and is characterized in that the support is a naked support, and a therapeutic medicament and/or a cell coat are attached to the surface of the saccule. After the saccule expansion support is placed into a coronary artery through the catheter, the saccule is expanded through transient pressure so that the medicament or the cell coat on the saccule can tightly cling to the inner wall of a blood vessel so as to repair the blood vessel intima injured by saccule expansion. The system well combines the advantages of the first generation support system and the second generation support system so that the saccule carries the medicament to enter the blood vessel once, and the support is the naked support and only plays a role in supporting the blood vessel so as to well solve the problem of long-term non healing of the injured blood vessel caused by the sustainable medicament of the second generation support system, effectively prevent the formation of thrombus and restrain the occurrence of restenosis.

The invention discloses an extendable catheter sheath and an interventional device conveying device. The extendable catheter sheath comprises a tube wall, the tube wall is in a rolling wall structure, the cross section of the tube wall is in a coiling shape, and the tube wall has an expanding state for expanding the rolling wall structure of the corresponding part and a pre-forming state for automatically recovering the rolling structure. The catheter sheath has a specific cross-section shape, the shape (the cross section) of the catheter sheath is changed on the position, where an interventional device goes by, according to the external size of the interventional device when the interventional device is conveyed, and the catheter sheath is recovered to the original pre-forming state through the self-elasticity after the interventional device passes by, so that the catheter sheath is favorable for penetrating a thinner blood vessel, the falling of a calcification part is avoided, and the risk of the operation is reduced.

The invention provides a catheter handle used for an implant conveying system. The catheter handle comprises a slide shaft, a front slide and a rear slider, and rear handle. The slide shaft is a hollow tubular component provided with at least one axial slot; the slide shaft has a proximal end and a distal end; the front slider and the rear slider are arranged in the slide shaft and are in slide connection with the slide shaft; the front slider is close to the distal end of the slide shaft; each of the front slider and the rear slider is provided with a middle hole allowing penetration of a push tube; an elastic part is arranged between the front slider and the rear slider; the portion, passing the axial slots, of the rear slider is provided with a first transmission mechanism; the rear handle is rotatably arranged on the outer portion of the slide shaft; the inside of the rear handle is provided with a second transmission mechanism which matches and engages with the first transmission mechanism on the rear slider. Under the control of the catheter handle used for an implant conveying system, such implants as stents can be released at focus parts accurately; the risk of dirt hiding is avoided; the handholding comfort level is increased; the formation of air thrombi can be effectively avoided.

The invention discloses an automatic air exhaust and blood return preventing infusion apparatus. The infusion apparatus comprises a bottle stopper puncture outfit, an upper infusion tube, a dripping hopper, a lower infusion tube, a blood return preventing filter membrane, a flow regulator, a hollow sac tube, a liquor filter, an outer conical joint, a fine infusion tube and an intravenous injection needle, wherein the upper end of the dripping hopper is provided with an infusion dripping tube provided with a nozzle or an open hole or a groove; an exhaust tube of which the upper part is provided with an open hole or a groove is arranged in the dripping hopper; the blood return preventing filter membrane is arranged at a position between 2/3 of the tube height of the dripping hopper and the lower infusion tube and is prepared from a liquor filter membrane; and the hollow sac tube or the outer conical joint or the liquor filter is provided with a waterproof air filter or waterproof air filter membrane. The dripping hopper can quickly exhaust air, the blood return phenomenon after liquor is completely infused can be avoided, the phenomenon that the air can enter veins once the air enters the lower infusion tube can be avoided, and people can observe the dripping speed of the dripping hopper permanently.

The invention discloses a bedridden patient exercise device, which comprises a framework, support rods, a first motor, a first pull rope and massage mechanical hands, wherein each massage mechanical hand comprises a transverse shaft and a plurality of pairs of arc-shaped fingers in parallel arrangement along the transverse shaft; and the bedridden patient exercise device also comprises a controller used for controlling the first motor and an electric cylinder. The bedridden patient exercise device has the advantages that when a bedridden patient needs to do limb activities, the bedridden patient can be conveniently pushed to a sickbed position of the patient; upright posts of the framework are enabled to be positioned at the two sides of a sickbed; then, the arms or the legs of the patient are put into the massage mechanical hands; a rotating shaft of the first motor is controlled to do periodic positive and reverse rotation through the controller, so that the goal of driving the four limbs to vertically swing can be achieved; and the controller can also control a telescopic rod of the electric cylinder to do periodic telescopic movement, so that the massage on the four limbs can be realized. The bedridden patient exercise device can automatically help the limbs of the patient to do exercises; the occurrence of diseases such as pulmonary infection, muscular atrophy and thrombus can be effectively prevented; and the bedridden patient exercise device also has the characteristics that the position change is flexible, the use convenience is high, and the like.

The invention discloses a composite medicine carrying vessel stent and a preparation method thereof and relates to vessel stents, in particular to a femtosecond laser patterning gradient composite medicine carrying vessel stent. Surface microstructures having good wettability with carried medicines are processed on the surface of a metal stent through femtosecond laser, a hyaluronic acid (HA) carried vascular endothelial growth factor (VEGF) medicine layer formed by HA and VEGF which are co-deposited is arranged on the surface of the metal stent, and a medicine coating for inhibiting multiplication of vascular smooth muscle cells (VSMCs) or a medicine coating for inhibiting multiplication of the VSMCs and a medicine coating for inhibiting platelet aggregation, namely, an anticoagulant medicine coating, are coated on the VEGF medicine layer. The composite medicine carrying vessel stent overcomes the shortcomings that beneficial effects of medicines for inhibiting VSMCs and medicines for promoting vascular endothelial cells (VECs) are inhibited due to mutual influence when the medicines for inhibiting VSMCs and medicines for promoting VECs are carried on the surface of the vessel stent simultaneously in the prior art; and covering of the medicines on the surface of the stent is incomplete due to the fact that the binding force between a base body and a medicine carrying layer coated on the surface of the smooth metal stent is poor, and the medicine carrying layer is easily stripped and falls off when the vessel stent is opened.

The invention relates to an invasive medical device, in particular to a stopper for treating the congenital heart disease. A stopper capable of reducing thrombus source is composed of a net made of a medically implantable material, wherein the net has an open and hollow left disk Compared with prior art, the stopper has reduced weight since the disk is partially or completely open and hollow, thus reducing the burden implanted into the human body. Moreover, the stopper in prior art is mainly made of metal, but the stopper in the invention can greatly reduce the coverage rate of metal and lowers the leakage amount of metal ions, thus effectively suppressing the generation of thrombus. Tests show that the stopper can effectively promote coverage of endothelial cells, so that a natural isolation layer can be formed on the surface in a short time, thus greatly improving the blockage effect.

The invention provides a totally-artificial heart in built-in mode. The totally-artificial heart comprises a fixation unit, an energy control unit, power units, and flow direction control units. The power units are flexible peristaltic pumps driven by alternating voltages. The fixation unit having a rigid structure is used for fixing the energy control unit, all power units, and all flow direction control units. Flow direction control unit doors arranged inside the flow direction control units are used for controlling flowing directions of fluid. The energy control unit outputs alternating voltages with variable frequencies and waveforms to control the power units, thereby meeting various requirements of human bodies. According to the totally-artificial heart in built-in mode, the totally-artificial heart can be used as an auxiliary artificial heart based on simple modification. With the driving thin-film material, the complicated mechanical structure is simplified and the energy consumption of the artificial heart is reduced substantially; the totally-artificial heart can be arranged in a built-in mode, so that the usage and maintenance costs can be lowered. Meanwhile, noises during working of the artificial heart can be reduced substantially, so that the comfort of the artificial heat can be improved. Besides, on the basis of the unique structural design, a certain adjuvant treatment effect for some traditional cardiovascular diseases is realized.

The invention relates to a heath care product for preventing microthrombus from forming and a preparation method thereof. The health care product comprises the following components in part by weight: 1-3 parts of natto powder, 0.8-3 parts of grape skin extract, 8-25 parts of hawthorn powder and 3-15 parts of pomegranate powder. The health care product provided by the invention is rich in various biological active substances, such as natto kinase, resveratrol, flavone, various vitamins and minerals and the like; the biological active substances are scientifically matched to exert cooperative and synergistic action, block off different paths of forming the microthrombus and establish a defensive line for preventing cardiovascular and cerebrovascular diseases.

The invention relates to a polyester type polyurethane material with a side chain containing a phosphorylcholine group and a preparation method thereof. The preparation method comprises the following steps of: (1) causing polyester glycol react with excessive diisocyanate, thereby acquiring a double-end isocyanate group prepolymer; and (2) adopting a phosphorylcholine compound containing two amino groups for expanding the chain of the double-end isocyanate group prepolymer, thereby acquiring a biodegradable polyurethane material with the side chain containing the phosphorylcholine group. The phosphorylcholine group in the polyurethane material is located on the side chain of the polymer, so that the biocompatibility of the material can be effectively promoted under the condition of low content of the phosphorylcholine group. Soft segments of the material are all made from polyester; the degree of crystallinity is higher; the higher mechanical strength of the material is guaranteed; the main chain is fully hydrophobic; the degradation velocity is low; the polyurethane material, which is used as a tissue engineering repairing holder material, and the like, can be long-term applied to organism; after the material acts, the material can be gradually degraded into non-toxic products and then absorbed by the organism, so that the injury of the second operation can be avoided.

The invention discloses a composition for chili bean dreg sauce and a manufacturing method thereof, belonging to the food industry field. The compositions by weight percentage of the raw materials of the chili bean dreg sauce are: 40 to 50 percent of edible oil, 40 to 50 percent of soybean curb residue and 5 to 10 percent of flavoring substances, wherein, besides edible salt and monosodium glutamate, other flavoring substances are all pungent raw materials, namely chili, pepper, ginger and garlic. The manufacturing method comprises the following steps: firstly, the soybean curb residue is fried in a cooking pot, laid open, cooled, heaped and tightly hit, and then fermented under the environment between 8 and 20 DEG C until the soybean curb residue has aroma; secondly, the fermented soybean curb residue is baked, blown and dried in the sun, and firewood is optimally used for baking; thirdly, the dried fermented soybean curb residue is crushed and added with the flavoring substances for uniform stirring, and then the edible oil between 200 and 300 DEG C is poured into the soybean curb residue for uniform stirring and then naturally cooled; and fourthly, after bottling, the chili bean dreg sauce finished product is obtained. The method is simple and unique in manufacturing; and the manufactured chili bean dreg sauce not only has rich nutrition but also contains a great deal of cellulose, is suitable for being eaten together with rice or bread as a cole in a household, is used for adjusting the taste and adjusting stomach and intestine functions, and is favorable for weight-loss and bodybuilding.

The invention provides a type I AV vein detained needle having positive pressure function which comprises a puncture needle, a puncture needle seat, a vein detained needle hose, a nail head, a vein detained needle seat, a connecting tube, a positive pressure spring, a sealing cap, a seal ring, a piston, a seal ring piston, and a positive pressure casing. The positive valve structure in the form of the piston and the conventional I-shaped detained needle are organically combined by adopting the structural design of a cross channel (when the puncture needle is present) and a T-shaped channel (when infusion and retention are carried out) arranged in the piston. A liquid channel during infusion comprises an inner cavity between a pair of arc plates on the piston and between the piston and the middle part of a positive pressure casing, a T shaped channel on the piston, the connecting tube, the nail head and the vein detained needle hose. An air channel can be several gaps at lower section of the positive pressure casing. The piston moves in upper and lower directions in the positive pressure casing, and a positive pressure is generated by the difference between the upper section diameter and the lower section diameter of the piston, and upward stroke thereof. The type I AV vein detained needle has small volume and light weight, and is easily fixed and carried, which facilitates popularization.

The invention belongs to the field of application of microbial fermentation, and relates to a bacillus coagulans and natto bacillus mixed liquid-state fermentation bean food, a bacillus coagulans and natto bacillus mixed solid-state fermentation bean food, a preparation method of the bacillus coagulans and natto bacillus mixed liquid-state fermentation bean food, and a preparation method of the bacillus coagulans and natto bacillus mixed solid-state fermentation bean food. At least one of soybeans and black beans, or a mixture of at least one of soybeans and black beans, and other beans, is used as a fermentation substrate, and mixed strain fermentation is conducted by using bacillus coagulans and natto bacillus, so that the fermentation bean foods are obtained. The obtained fermentation bean foods not only are better in mouth feel and nutrient components than foods made by single strain fermentation, in the propagation process of the bacillus coagulans, ammonia can be used as a nitrogen source, so that ammonia gas generated during a conventional natto production process is consumed, and the fermentation bean food is free from smelly ammoniacal odour of conventional natto and beany flavor of bean foods. The release amount of the ammonia gas is lower than 10mg/kg.

The invention discloses a positive-pressure slow release joint. In use, an external infusion set is inserted into a sealed section, a piston is pushed to move downwards till the piston retreats to an active section, an external joint communicates with a positive-pressure chamber, and liquid in the external infusion set sequentially passes an input port, the sealed section, a diversion channel, the positive-pressure chamber, a liquid passing hole, a column channel and an output port. When infusion is completed, the external joint is pulled out to stop infusion, the piston is driven by an elastic part to block the positive-pressure chamber again, and at the same time, the liquid passing hole is also blocked by the piston; at the moment, the positive-pressure chamber is filled with liquid, and a micro-infiltration channel is formed in the joint, so that formation of thrombi when a venous indwelling needle stops infusion can be effectively prevented. Normal infusion can be realized, micro-infiltration can be formed in the joint when infusion is stopped, and thrombosis can be effectively prevented; furthermore, after the external infusion set is removed, the joint is automatically switched to the positive-pressure micro-infiltration state, so that blood return is reduced, additional operation of medical staff is not needed, and working intensity of medical staff is reduced greatly.

The invention discloses a filter, which comprises a first end and a plurality of supporting bodies which radiate from the first end towards the same direction; the filter is characterized in that a wing-shaped thin film body covers at least part of each of the supporting bodies; the thin film bodies are wider than the covered parts of the supporting bodies; and the thin film bodies on the two adjacent supporting bodies are mutually spaced. When the filter disclosed by the invention is kept in a lumen, the thin film bodies can float under the flushing action of a blood flow since the filter is wider than the covered parts of the supporting bodies, so that the coverage of endothelia can be relieved; and in addition, by virtue of the thin film bodies, tissues on two sides of the supporting bodies are prevented from covering the supporting bodies when the tissues get mutually bonded, so that the filter can be taken out conveniently.