56 results about "Deep vein" patented technology

The invention relates to a deep vein thrombectomy support device which has the advantage of being convenient to clean. The inner tube assembly comprises an inner tube, a conical head assembly and a limiting key, the inner tube and the handle assembly are matched in the mode that the inner tube can slide axially but cannot rotate relative to the circumferential direction, the conical head assembly is arranged at the far end of the inner tube, the limiting key is movably installed on the handle assembly, and the limiting key selectively acts on the inner tube; the middle tube assembly comprises a middle tube and a support fixing assembly, the near end of the middle tube is connected to the handle assembly, and the far end of the middle tube is connected with the support fixing assembly; the outer pipe assembly comprises an outer pipe which can be axially and movably arranged on the middle pipe in a sleeving manner; the thrombectomy stent assembly comprises a self-expansion stent and a woven mesh, the near end of the self-expansion stent is connected with the stent fixing assembly, the near end of the woven mesh is connected to the far end of the self-expansion stent, and the far end of the woven mesh is connected to the conical head assembly.

The utility model discloses a deep vein puncture training simulation device, which comprises a puncture training platform, a dummy man device and a puncture training device, the dummy man device comprises a dummy man body and simulated deep veins distributed in the dummy man body, and each simulated deep vein is filled with simulated blood. The surface of the simulation human body is coated with a transparent observation layer through which all the simulation deep veins can be observed; a body position adjusting device is arranged on the puncture training table; the puncture training device comprises a puncture training needle and a puncture feedback device; teaching and training requirements of different body positions can be met by adjusting the body position of the simulated human body, all simulated deep veins can be observed through the transparent observation layer, and puncture results can be fed back in time when puncture training is conducted through cooperation of the puncture training needle and the puncture feedback device. When puncture fails, failure causes can be known through observation of the transparent observation layer, so that trainees can adjust and correct in time, and accuracy, training efficiency and quality of puncture operation are improved.

The application discloses a kind of prevention instruments for deep vein catheter thrombus, belong to thrombus prevention technical field.It includes bottom plate, one end of bottom plate is equipped with deflection block, the bottom plate is equipped with fixed plate behind deflection block, one end of fixed plate is fixedly connected to bottom plate, the other end of fixed plate is equipped with sliding column, one end of sliding column is surface contact with deflection block, the other end of sliding column is equipped with torque amplification assembly on both sides, torque amplification assembly includes first connecting rod, one end of first connecting rod is rotatably connected to the other end of sliding column, second connecting rod is equipped on the other end of first connecting rod, one end of second connecting rod is rotatably connected to the other end of first connecting rod, traction rope is equipped on the other end of second connecting rod, stand is equipped on second connecting rod, one end of stand is connected to bottom plate, the other end of stand is rotatably connected to second connecting rod.This technical scheme is used to improve the prevention effect of venous thrombosis.

The application discloses a deep vein puncture path generation method and device, the method comprises the following steps: acquiring an ultrasound image of a puncture site; identifying the category of an anatomical target according to the color feature and shape feature of the ultrasound image, and establishing a corresponding feature vector; wherein each feature vector corresponds to an anatomical target; inputting the ultrasound image after the feature vector is established into a preset path model, so that the path model establishes a vein puncture path according to each feature vector, and performs traversal query to output the shortest vein puncture path; wherein the path model establishes a vein puncture path according to each feature vector according to a preset objective function. The technical scheme of the application identifies the anatomical target category in the ultrasound image and outputs the shortest vein puncture path, provides reliable object recognition and path guidance for medical staff, avoids the risk of misjudgment caused by insufficient skills or experience among medical staff, and can improve the accuracy and safety of vein puncture.

The utility model relates to a deep venous catheter connector fixing patch, and relates to the technical field of medical articles. The fixing patch is used for being attached to the skin of a patient, the gauze sleeve is used for being sleeved with a catheter connector, and the gauze sleeve is movably arranged on the fixing patch; a fixing assembly is further arranged on the fixing patch, and the fixing assembly is used for fixing the gauze sleeve and the catheter connector; the catheter connector further comprises a movably-arranged hasp piece, one end of the hasp piece is pasted on the skin of a patient, the other end of the hasp piece is pasted on the gauze sleeve or the fixing assembly, and the hasp piece is used for covering the leakage end opening of the catheter connector. The guide pipe connector has the effect that the guide pipe connector can be conveniently cleaned and replaced.

The utility model provides a pneumothorax deep vein catheterization drainage device capable of being automatically externally connected with a water-sealed bottle, and relates to the technical field of medical equipment, the pneumothorax deep vein catheterization drainage device comprises a drainage tube main body, two ends of the drainage tube main body are respectively connected with an output tube and an input tube; a storage cover is mounted on the outer side of the output pipe; a collecting piece is installed on the side face of the storage cover. A hole is formed in the side face of the collecting piece, and the hole in the side face of the collecting piece is communicated with the inner side of the storage cover; a fixed cover is mounted on the outer side of the input pipe; a detachable binding belt is installed on the side face of the fixing cover, and a force component plate is installed on the outer side of the fixing cover. The multiple supporting rings are distributed on the outer side of the tubular drainage device, the situation that flow of gas or liquid in the pleural cavity is affected by deformation of the drainage device is reduced, it is guaranteed that the guided-out gas or liquid is discharged in time, and the problems that deformation exists when the drainage device is pressed, and flow-out of the gas or liquid in the pleural cavity is affected are solved.

The application relates to a portable glasses type oxygen inhalation device and relates to the technical field of medical apparatuses. The device comprises a frame, two legs, an oxygen passing assembly and an oxygen inhalation nose, the two legs are arranged at the two ends of the frame, the oxygen passing assembly is arranged on the frame, an oxygen passing channel is formed in the oxygen passing assembly, oxygen is introduced into the oxygen passing channel, the oxygen inhalation nose is arranged on the oxygen passing assembly, and the oxygen inhalation nose is communicated with the oxygen passing channel. The two legs are hung on the left and right ears of a patient respectively, oxygen is introduced into the oxygen passing channel, the oxygen is inhaled by the nose of the patient through the oxygen inhalation nose, the oxygen inhalation tube does not press the back of the ear, does not cause confusion with other pipelines (such as a nasogastric tube) of the face, does not cause damage to the neck wound of a patient with a right or left deep vein replacement, and does not cause infection, and the problem that the existing oxygen inhalation tube is easy to cause discomfort and damage to the patient during use is solved.

The invention discloses an integrated valvular catheter and a preparation method thereof, relates to the technical field of medical instruments, and aims to solve the problems that in a traditional valvular catheter operation, suturing is tedious, tearing and thrombus risks exist, and adaptability is insufficient. The integrated valve-containing pipeline is composed of a valve leaflet and a pipeline body which are integrated through the sintering effect, sewing is not needed, and the reflux and thrombus risks caused by sewing gaps are effectively avoided; a metal memory alloy support is embedded in the wall of the pipeline, so that support can be provided for the valved pipeline to stabilize haemodynamics and prevent the pipeline from collapsing, endovascular intervention delivery can be achieved, and the device is adaptive to a surgical opening mode or an endovascular implantation mode and is used for replacing the valved pipeline at parts such as pulmonary artery and lower limb deep vein of a human body and recovering the function of the damaged valve.

The invention discloses a deep vein puncture integrated device for monitoring the pH value of blood in a blood vessel and a use method, and belongs to the technical field of medical equipment, the deep vein puncture integrated device comprises a remaining needle catheter, the remaining needle catheter comprises a first pipeline and a second pipeline which are relatively independent, the first pipeline is used for conveying therapeutic liquid, and the second pipeline is used for blood sampling; the three-way valve is arranged on the indwelling needle seat, three ports of the three-way valve are communicated with the second pipeline, the pH value detection unit and the flushing fluid unit respectively, and the three-way valve is provided with a knob used for driving the three-way valve to be switched among different working positions; the control module is in signal connection with the pH value detection unit, the three-way valve driver and external clinical equipment. The whole process of sampling, detecting and flushing can be automatically and intermittently completed according to the preset period, and an almost continuous pH value dynamic change trend curve is provided, so that intervention is performed before clinical symptoms are obviously deteriorated, and the timeliness and accuracy of treatment are remarkably improved.

The invention discloses an ultrasonic blood sampling device and method and application in small animal blood sampling, and relates to the technical field of medical instruments and devices.The ultrasonic blood sampling device comprises an ultrasonic instrument matched with an ultrasonic probe for display, the ultrasonic instrument is arranged on one side of an experiment table, and a blood sampling assembly is fixedly installed on the experiment table and comprises an operation bin, a base and an operation table; the base and the operation table are vertically arranged in the operation bin side by side, a clamping plate is rotationally installed on the operation table through a connecting assembly, a clamping plate is fixedly installed on the clamping plate in a magnetic attraction mode, clamping grooves corresponding to four limbs of a blood sampling animal are formed in the clamping plate, and the connecting assembly is in a W shape. The blood sampling success rate can be increased, the position of the deep vein and the blood flow condition are observed in real time through the ultrasonic imaging technology, the blood sampling needle can be accurately guided to enter the blood vessel, and the blood sampling success rate is remarkably increased.

The present application relates to the technical fields of deep vein catheterization infusion, in particular to a constant temperature control speed device for deep vein catheterization infusion, comprising an infusion catheter head and an infusion tube, one side of the infusion catheter head is fixedly connected with one end of the infusion tube. The present application sets a piston frame structure with spiral flow guide grooves inside the infusion tube, changes the fluid dynamics behavior of traditional plunger type propulsion, when the piston frame reciprocates, the liquid medicine forms spiral jet flow under the guidance of the spiral flow guide grooves, forced fluid generates circumferential rotation, effectively destroys the stationary state of the pipe wall boundary layer, converts the axial thrust into rotational shear force, not only reduces the flow resistance, but also eliminates the stagnant zone at the front end of the piston, realizes uniform delivery of the whole cross section, makes the liquid medicine always maintain a dynamic mixing state during the pushing process, avoids density stratification and sedimentation, especially suitable for the infusion of fat emulsion, amino acid and other easily separated nutrient solutions, greatly improves the stability of the infusion.

The invention relates to a venous valve destruction structure for deep vein transcatheter arterization, and belongs to the technical field of medical devices, the venous valve destruction structure comprises a transcatheter, a venous valve knife and a limiting device, the venous valve knife is inserted in the transcatheter, the venous valve knife is provided with a moving rod, one end of the moving rod is provided with a venous valve blade with an expandable or contractible volume, and the other end of the moving rod is provided with the limiting device. The vein valve blade is retracted into the transcatheter, or the vein valve blade extends out of the transcatheter, and a handle is arranged at the other end of the moving rod; the limiting device is used for limiting the moving position of the venous valve knife and can be rotatably arranged outside the transcatheter, the venous valve knife penetrates through the interior of the limiting device, and the limiting device is connected with the moving rod through threads; the device has the advantages that the limiting device is rotated, the handle is controlled, the vein valve blade moves in one direction, the vein valve blade extends out of the transcatheter, and the vein valve is damaged through linear movement and rotation of the vein valve blade.

The invention discloses a device and method for removing a contrast agent in heart local blood, and relates to the field of medical treatment, the removing device comprises a suction catheter, a power pump, a filter assembly and a backflow catheter which are connected in sequence; the coronary artery of the heart body is communicated with the angiographic catheter, the coronary sinus of the heart body is communicated with the suction catheter, the femoral vein or other deep veins of a human body are communicated with the backflow catheter, and the area between the coronary artery and the coronary sinus is a contrast agent delivery area; wherein the filtering assembly is used for removing a contrast agent in blood. When the contrast agent in the blood is removed, the blood containing the contrast agent is pumped out of the heart body through the suction catheter by the power pump, then the contrast agent contained in the blood is removed through the filtering assembly, and then the blood without the contrast agent is conveyed into the human body again through the femoral vein or other deep veins by the backflow catheter. By means of the circulating conveying mode, on one hand, contrast agents in blood can be removed, and on the other hand, excessive blood loss of a patient can be avoided.

The invention relates to the technical field of medical instruments, and discloses a deep vein pipeline fixing device which comprises an adjustable clamping and fixing mechanism and an adsorption type fixing mechanism. The air suction shell is fixedly installed on the top of the upper clamping ring, and the interior of the air suction shell is of a hollow structure; the second piston plate is placed in the air suction shell and can generate negative pressure suction force; and the second spiral spring can generate elastic pre-tightening force on the second piston plate. According to the deep vein pipeline fixing device, a pipeline can be fixed to the body position of a patient, so that the flexible movement function of the pipeline is guaranteed, in addition, the deep vein pipeline is clamped and fixed through the arc-shaped clamping plates, then the pipeline is fixed in an adsorption mode through gas suction force, and therefore the fixing strength of the deep vein pipeline is improved; therefore, the external anti-interference capability of the pipeline fixing device is ensured.

The utility model discloses a deep venous catheter, which belongs to the technical field of medical instruments and can effectively prevent air from entering blood vessels. Comprising a catheter body, a multi-way tube seat, a plurality of branch tubes, a plurality of connectors and a plurality of switch valve assemblies, the multi-way tube seat comprises a plurality of input ports and an output port, and the output port is communicated with one end of the catheter body; each branch pipe is communicated with the corresponding input port and comprises a second pipe section; each connector is arranged on the corresponding branch pipe; each switch valve assembly is arranged in the corresponding second pipe section and comprises a first disc body and a first sealing assembly, the radius of the first disc body is equal to the inner diameter of the second pipe section, the central axis of the first disc body coincides with the central axis of the second pipe section, and a first stepped through hole comprising a first hole section and a second hole section is formed in the first disc body; the radius of the first hole section is larger than that of the second hole section, the second hole section is located between the connector and the first hole section, and the first sealing assembly is used for controlling connection and disconnection of the first hole section.

The application relates to a deep vein thrombus removing stent device which has the advantage of convenient cleaning and comprises a handle assembly, an inner tube assembly, an intermediate tube assembly and an outer tube assembly. The inner tube assembly comprises an inner tube, a conical head assembly and a limiting key. The inner tube is matched with the handle assembly in a mode that the inner tube can axially slide but cannot relatively rotate. The conical head assembly is arranged at the distal end of the inner tube. The limiting key is movably arranged on the handle assembly and selectively acts on the inner tube. The intermediate tube assembly comprises an intermediate tube and a stent fixing assembly. The proximal end of the intermediate tube is connected to the handle assembly, and the distal end is connected to the stent fixing assembly. The outer tube assembly comprises an outer tube which is movably sleeved on the intermediate tube. The thrombus removing stent assembly comprises a self-expanding stent and a braided mesh. The proximal end of the self-expanding stent is connected to the stent fixing assembly. The proximal end of the braided mesh is connected to the distal end of the self-expanding stent. The distal end of the braided mesh is connected to the conical head assembly.

The invention discloses a method for detecting deep venous thrombosis of a patient with traumatic craniocerebral injury, and relates to the technical field of deep venous thrombosis detection. The method comprises the following steps: acquiring deep vein images and physiological parameters, performing noise reduction, normalization and abnormal value elimination, extracting vein structures and suspected thrombus features, marking gray scale and morphological anomaly regions, and forming a feature vector library; analyzing a physiological parameter time sequence trend, dividing high, medium and low risks, and associating image analysis; weighting and fusing the image and the physiological parameters, judging a thrombus area and marking the type, the position and the size; the thrombus change is manually rechecked and dynamically monitored, and clinical intervention is associated to form a closed loop; and generating and filing an encrypted report, and synchronizing the encrypted report to an electronic medical record system. The thrombus detection comprehensiveness and accuracy are improved through multi-data fusion, dynamic monitoring and risk pre-judgment are achieved, the system adapts to clinical scenes, efficient support is provided for thrombus management of traumatic craniocerebral injury patients, and intervention opportunities and schemes are optimized.

The invention provides an intelligent deep vein indwelling catheter fixing device and an infusion method, and belongs to the field of deep vein indwelling catheters.The intelligent deep vein indwelling catheter fixing device comprises a shell, a limiting partition plate is arranged in the shell, a lower clamping plate is arranged on the upper surface of the shell, and a bimetallic strip set is mounted at the inner bottom of the shell through a first mounting rod; an ejector rod is arranged in the middle of the upper end of the bimetallic strip set, and the upper end of the ejector rod penetrates through the limiting partition plate and is in transmission connection with an upper clamping plate through a self-locking transmission mechanism. By means of the bimetallic strip set, when the body temperature of a patient with a fever is higher than 38 DEG C, the ejector rod is pushed to move upwards, the ejector rod drives the upper clamping plate to move upwards by a small distance through the self-locking transmission mechanism, and the pressure between the upper clamping plate and the lower clamping plate is reduced; therefore, the upper clamping plate and the lower clamping plate do not lose the clamping and fixing effect on the catheter, the risk of'loosening, namely falling 'is eradicated, and the situation that a patient is bruised due to the fact that too large pressure is applied to the catheter is avoided.

A valvulotome device includes a cage having a proximal end, a distal end, and a longitudinal axis therebetween. The cage includes one or more struts which are radially openable to different diameters, and one or more cutting blades positioned on the one or more struts. A sheath is movable over the cage. Movement of the sheath exposes or covers the one or more struts. A wire extends distally beyond the distal end of the cage. The wire is fixedly coupled to the proximal end of the cage, and the distal end of the cage is free to slide over the wire.

The present invention discloses an ultrasound-guided deep vein puncture and catheterization model, relating to the technical field of medical puncture models. The present invention comprises a human body model and a blood vessel model; the blood vessel model and the human body model are plugged together; the sides of the outlet ends of the arterial and venous simulated tubes are both provided with U-shaped grooves; the sides of the arterial and venous simulated tubes are both adhesively wrapped with adhesive tape at the locations of the U-shaped grooves; an alkaline container and an acidic container are respectively connected to the blood vessel model; and a plug-in sleeve is plugged together with a phenolphthalein test tube. The present invention provides U-shaped grooves on the sides of the arterial and venous simulated tubes, and adhesive tape is used to wrap the U-shaped grooves. The adhesive tape can be replaced to simulate the feeling of a missed puncture. After the puncture is completed, the puncture needle is pulled out of the simulated tube, and the test fluid in the simulated tube seeps out of the puncture hole and falls into the puncture cavity, and then drips into the phenolphthalein test tube. The phenolphthalein does not change color when exposed to acid, but turns red when exposed to alkali, and is used to determine whether the punctured simulated tube is arterial or venous.

The invention relates to a lower limb deep vein thrombus cleaning device, and belongs to the technical field of medical instruments. The thrombus removal device comprises a thrombus removal mesh basket assembly, the front end is inserted into a catheter in the blood flowing direction and penetrates through a vein valve and thrombus, and the thrombus removal mesh basket assembly is used for cleaning and containing the thrombus at the front end of the vein valve; the rotary telescopic assembly is arranged at the rear end of the thrombus extraction mesh basket assembly and used for controlling the thrombus extraction mesh basket assembly to stretch out, draw back and rotate in the target blood vessel so as to cut or scrape thrombus; the front end of the collecting assembly is inserted into the catheter in the blood flowing direction, abuts against the rear end of the vein valve and is used for cleaning and collecting thrombus at the front end and the rear end of the vein valve. The problem of cleaning blind areas caused by irregular outlines of the vein valve areas is effectively solved, and the thrombus cleaning device has the advantages that thrombus at the front end and the rear end of the vein valve can be cleaned at the same time, cleaning blind areas are effectively reduced, thoroughness of thrombus cleaning is improved, and thrombus residual risks are reduced.

The invention discloses a subclavian deep vein fixing patch and a use method thereof, and belongs to the technical field of vein fixing patches, the subclavian deep vein fixing patch comprises a surface layer isolating membrane, a bottom layer moisturizing membrane and a middle fixing patch, the surface layer isolating membrane and the bottom layer moisturizing membrane respectively cover the upper layer and the lower layer of the middle fixing patch; a small amount of water is arranged at the connecting part of the bottom-layer moisturizing film and the middle fixing patch; and the middle fixing patch is isolated from an external bacteria environment by the surface-layer isolating film and the surface-layer isolating film. The invention provides a subclavian deep vein fixing patch and a using method thereof in order to solve the problems that due to the fact that release paper of an existing fixing patch needs to be completely torn away in advance, positioning is difficult, dressing is prone to displacement, and a catheter is prone to being pulled when the release paper is torn away, and safety risks are caused. The problems that an existing fixing patch is inaccurate in positioning, dressing is prone to being polluted, and a patient is injured due to the fact that a catheter is prone to being pulled when the fixing patch is torn off are effectively solved.

The present invention belongs to the technical field of medical devices, and specifically relates to a deep vein stent. A deep vein stent includes a stent structure and an artificial valve leaflet; the stent structure includes: at least two valve supports, which are S-shaped structures, symmetrically arranged, forming a circle of convex artificial venous sinus area in the outflow section, and the valve support members pass through the artificial valve leaflet, supporting the artificial valve leaflet at the middle bend of the valve support members. The present invention adopts multiple valve supports with S-shaped structures, which can support the artificial valve leaflet, and can naturally form an artificial venous sinus area in the convex part near the outflow section. When applied to the vein, under the action of multiple valve supports, a circle of convex artificial venous sinus area can be formed on the vein, thereby achieving the same use effect as the actual venous valve, so that the artificial venous sinus area is formed at the position of the artificial valve leaflet.

The invention discloses a deep vein rapid blood transfusion and infusion device, and relates to the technical field of medical instruments. The blood and liquid transfusion device comprises a blood container, a pump, a temperature changing device and a bubble catcher, the blood container is provided with a liquid inlet end, a liquid outlet end and a negative pressure end, the liquid inlet end of the blood container is communicated with the liquid suction catheter, the liquid suction catheter is suitable for being communicated with operation field blood, and the negative pressure end of the blood container is suitable for being communicated with a negative pressure source of an operating room; one end of the pump is communicated with the liquid outlet end of the blood container; the liquid inlet end of the temperature changing device is communicated with the other end of the pump, and the temperature changing device is used for keeping the temperature of blood; the liquid inlet end of the bubble catcher is communicated with the liquid outlet end of the temperature changing device, the bubble catcher is used for catching bubbles in blood, the liquid outlet end of the bubble catcher is communicated with the blood transfusion catheter, and the blood transfusion catheter is suitable for being communicated with a deep vein channel. According to the deep vein rapid blood transfusion and infusion device, the blood transfusion and infusion efficiency is improved, and the safety of cardiac surgery is improved.

This invention provides a method for preparing a deep vein catheter and its inner and outer walls with zwitterionic hydrogel coatings. The catheter of this invention includes: a catheter substrate; an adhesive coating covering the inner and outer walls of the catheter; an inner wall coating and an outer wall coating (4); wherein the inner wall coating and the outer wall coating are respectively fixed to the inner and outer surfaces of the catheter substrate by the adhesive coating; and both are zwitterionic hydrogel coatings. By simultaneously constructing this hydration barrier on the inner and outer walls of the catheter, this invention can block platelet adhesion and coagulation pathway activation from the initial stage of thrombosis; at the same time, the semi-interpenetrating network or microgel-reinforced structure significantly improves the mechanical stability and durability of the hydrogel, making it suitable for long-term indwelling catheters.

The application relates to the technical field of balloon catheters, in particular to a high-strength and durable balloon catheter for deep veins, which comprises a catheter and a connecting pipe, the inner wall of the catheter is movably connected with a communicating pipe, one side of the communicating pipe corresponding to the catheter is provided with an iron filament, the outer wall of the catheter is sequentially provided with a polytetrafluoroethylene layer, a toughness layer and a wear-resistant layer, one end of the catheter is fixedly connected with the connecting pipe, the outer wall of the connecting pipe is provided with a balloon main body, the upper end of the balloon main body is provided with a reinforcing layer and a thermoplastic polyurethane layer, the side close to the balloon main body of the connecting pipe is fixedly connected with a displacement section, the material of the balloon main body can be tightly combined with the thermoplastic polyurethane layer and the reinforcing layer, so that the balloon main body is not easy to fall off, the durability of the device is increased, the user can fold the catheter into a shape required by the human body, the use flexibility of the device is improved, the high-strength and durability of the device are increased, and the service life is prolonged.

The utility model discloses a surgical room arteriovenous folding fixed bolster is provided with a T type sliding slot in base, four sliding blocks are connected with T type sliding slot sliding respectively, and the folding support frame is set up on the sliding block one to one correspondence, and the bottom of folding support frame is rotatably connected with the first connecting sleeve surface of sliding block through the damping pivot, and the top of folding support frame is provided with the platform, and the upper surface of platform is provided with the pipeline fixed assembly, the utility model discloses reasonable structure, can properly classify and fix deep vein and two road venous transfusion pipeline and arteriovenous two road pressure sensor four road pipelines, can prevent the pipeline from slipping through the pipeline fixed assembly, and simultaneously through the folding support frame can adjust the position of two road pressure sensor at any time along with the change of the body position in operation, guarantees that pressure sensor and heart are in the same horizontal line, thereby ensures the accuracy of arteriovenous pressure monitoring in operation, guarantees the life safety of patient.

The utility model relates to the technical field of nursing, and discloses a turn-over device for old people nursing, which comprises a base, a turn-over component is arranged in the base, a positioning component is arranged in the base, the turn-over component comprises a rectangular through hole, the inside of the base is rotatably connected with a rotating rod, and the rotating rod is rotatably connected with the positioning component. And the outer side of the rotating rod is fixedly connected with an overturning plate, the interior of the base is fixedly connected with a double-shaft servo motor, and an output shaft of the double-shaft servo motor is fixedly connected with a rotating shaft. According to the turning-over device for nursing the old people, the old people are moved to a second soft cushion from a first soft cushion, a double-shaft servo motor is started to drive a rotating shaft to rotate forwards, and under transmission of a second transmission wheel, a belt and a first transmission wheel, a rotating rod drives a turning-over plate to rotate forwards; the old on the second soft cushion fixedly connected with the turnover plate can be driven to turn over, so that the risks of blood circulation disorder, increased pressure sores, lower limb deep vein embolism and the like of the old due to the fact that the old keep the same posture for a long time are avoided.

The invention relates to a deep vein transcatheter arteriovenous wall puncture effect-based deep vein transcatheter arteriovenous wall puncture effect-based deep vein transcatheter arteriovenous wall puncture device, and belongs to the technical field of medical surgical instruments, the deep vein transcatheter arteriovenous wall puncture effect-based deep vein transcatheter arteriovenous wall puncture effect-based deep vein transcatheter arteriovenous wall puncture device comprises a guide wire capturing device and a puncture device, one end of the rod body is provided with a guide wire capturing device with the size capable of being released and compressed, and the other end of the rod body is provided with a handle. The puncture device comprises a second long catheter, a puncture tube is arranged in the second long catheter, the puncture tube can linearly move in the second long catheter, and a guide wire is arranged in the puncture tube; the guide wire penetrates out of the puncture tube and is captured through the guide wire capturing device. The arteriovenous access device has the advantages that the guide wire penetrates out of the puncture tube, the guide wire is used for capturing through the guide wire capturing device, and the arteriovenous access of the deep vein transcatheter arteriovenous interventional operation is established.

The utility model relates to a deep venous catheter dressing assembly. The deep venous catheter dressing assembly comprises a deep venous catheter, a protection unit and an uncovering unit. The protection unit comprises sterile gauze covering the deep venous catheter and a dressing patch covering the side, away from the deep venous catheter, of the sterile gauze. The uncovering unit comprises a positioning block arranged between the sterile gauze and the dressing patch, the positioning block is located on the edge of the sterile gauze, a positioning strip is arranged on the positioning block, and the positioning strip extends out of the edge of the sterile gauze from the positioning block. According to the scheme provided by the invention, stimulation and injury to a patient can be reduced when the pasting film is replaced.