146 results about "Cardiac surgery" patented technology

The invention provides an early-stage automatic identification method and system for acute kidney injury related to cardiac surgery, and relates to the technical field of physiological parameter detection. The method comprises the following steps: acquiring average arterial pressure, cardiac blood discharge volume, central venous pressure and blood oxygen saturation, regularly recording and extracting data of adjacent time points, calculating a variation range, screening a mutation region, judging whether a reference range is exceeded or not, analyzing a multi-parameter synchronous variation condition, and marking a hemodynamics abnormal state. According to the method, abnormal changes of hemodynamics and urine metabolism are accurately recognized through real-time monitoring and multi-parameter analysis, the urine flow rate and the metabolite excretion rate are combined, misjudgment of a single index is avoided, the fineness of renal function change analysis is improved, the high-risk time period is accurately positioned through time cross comparison, the diagnosis accuracy is improved, and the diagnosis accuracy is improved. Trend analysis and risk grade division enable the change of the illness state to be more visual, and a real-time early warning system effectively monitors the fluctuation trend, optimizes clinical management and improves the timeliness of medical response.

The invention discloses a virtual reality-based heart three-dimensional model construction and operation simulation guidance system. The system comprises a heart data acquisition module, a heart simulation module and a virtual operation module. A dynamic heart simulation model is constructed through a multi-modal medical data fusion technology, electro-mechanical two-way coupled heart motion simulation is achieved, and an immersive surgery scene is generated in combination with a virtual surgery interaction mechanism. The data acquisition module integrates electrocardiogram, image and physical data to form a database; the heart simulation module generates a dynamic heart model through time-frequency domain analysis, finite element modeling and a time-space coupling algorithm; and the virtual operation module supports real-time instrument operation feedback and operation effect prediction. The system can assist doctors in preoperative planning, intraoperative guidance and postoperative evaluation, and the accuracy and safety of cardiac surgery are improved.

The invention discloses a cardiac surgery sternum dilator for preventing rib fracture, which comprises a first distraction arm, a guide plate, a second distraction arm, a distraction plate, a pressure gauge, a brake component and a controller, and is characterized in that the first distraction arm is fixed at one end of the guide plate; the second distraction arm is arranged on the guide plate and can move along the guide plate; guide grooves are formed in the opposite sides of the first distraction arm and the second distraction arm, a distraction plate is inserted into each guide groove, and the distraction plates can move in the length direction and the height direction relative to the guide grooves; the first distraction arm and the second distraction arm are each provided with a pressure gauge in a sliding mode, and the detection ends of the pressure gauges can abut against the corresponding distraction plates. And the brake component is arranged on the second distraction arm. Therefore, the sternum distraction pressure can be detected, braking is carried out when the pressure is too large, and therefore the situation of side injury of rib fracture caused by the too large distraction pressure is avoided, and the discomfort of a patient in the postoperative recovery process is reduced.

The invention belongs to the field of cardiac surgery, and particularly relates to a cardiac surgery preoperative pulmonary complication prediction method which comprises the following steps: data preprocessing including abnormal value processing, missing value processing, feature correlation analysis, data discretization and data standardization, abnormal values and irrelevant data in the case data set are filtered and removed, and interference of the abnormal values on follow-up model learning is avoided; according to the method, data quality and feature validity are guaranteed from the source through a hierarchical progressive data preprocessing process; noise interference to model learning is avoided by filtering abnormal values and irrelevant data; for missing values, differentiation processing is carried out according to the missing rate (features with the missing rate larger than 30% are removed, and features with the missing rate smaller than 30% are filled with median, regression prediction or mode according to variable types), compared with an existing model simple filling mode, data deviation is greatly reduced, and data integrity and reliability are improved.

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 discloses an ultrasonic imaging system and method based on a heart surface, a medium and a product, the system comprises an ultrasonic detection assembly and an imaging terminal which are in communication connection, an ultrasonic transducer is packaged at the head end of an attached ultrasonic probe in the ultrasonic detection assembly, and an acoustic window on the ultrasonic transducer is planar; the ultrasonic transducer is used for being attached to the surface of the heart or the aorta, and the plane of the ultrasonic transducer is parallel to the plane of the acoustic window; and the imaging terminal is used for generating a sound velocity mask pattern according to the reference ultrasonic image, determining echo time delay data according to the sound velocity mask pattern, synthesizing and reconstructing the radio frequency signal data according to the echo time delay data to obtain an ultrasonic image, performing motion compensation on the image sequence, performing multi-modal fusion on the ultrasonic image subjected to motion compensation, and obtaining a final ultrasonic image. The problem of acoustic interference of anatomical structures such as the chest wall and the esophagus in a traditional echocardiography technology is solved, and real-time and high-quality image support is provided for cardiac surgery.

The invention provides a registration method and device in a cardiac surgery and computer equipment, which are used for improving the safety and accuracy of the surgery. The registration method comprises the following steps: acquiring an electrocardiosignal and multi-modal physiological data of a surgical patient, and performing cardiac time phase division on a cardiac cycle based on the electrocardiosignal and the multi-modal physiological data; collecting multi-angle image data of the heart under each cardiac time phase, and synchronously collecting physiological parameter data; performing three-dimensional reconstruction based on the multi-angle image data corresponding to each cardiac time, and mapping the physiological parameter data corresponding to each cardiac time to a corresponding three-dimensional reconstruction result to obtain a multi-temporal three-dimensional heart model library; the method comprises the following steps: acquiring real-time electrocardiosignals and real-time multi-modal physiological data of a surgical patient in a surgical process to identify a current cardiac time phase, selecting a current time phase three-dimensional heart model from a multi-time phase three-dimensional heart model library according to the current cardiac time phase, and performing surgical registration by using the current time phase three-dimensional heart model.

The invention belongs to the field of medical instruments, and particularly relates to an absorbable pace-making wire, which comprises a chest wall penetrating steel needle, a magnesium metal wire, a zinc film coated electrode, a single-strand wire, a coil and a curved needle, the magnesium metal wire is mounted at one end of the chest wall penetrating steel needle, and the zinc film coated electrode is mounted at one end of the magnesium metal wire; one end of the zinc film wrapped electrode is provided with the single-strand wire and the coil, one end of the single-strand wire and one end of the coil are provided with the curved needle, the magnesium metal wire is wrapped by a layer of absorbable material film (such as polycaprolactone material), and the electrode part of the magnesium metal wire in contact with the cardiac muscle is not provided with a polymer coating and is only wrapped by zinc foil. According to the invention, a temporary cardiac pacing effect can be achieved after an operation, and slow degradation and absorption can be gradually realized by a human body in about one year. Complication and secondary operation are avoided, performance is improved by means of innovative materials, electric signal transmission is guaranteed through structure optimization, and a better choice is provided for temporary pacing in cardiac surgery.

The invention discloses an auxiliary rehabilitation device for cardiac surgery nursing in the technical field of medical instruments. The auxiliary rehabilitation device comprises an upper limb training mechanism and a lower limb training mechanism. The lower limb training mechanism comprises a base located at the tail of the bed body, a pair of piston grooves are formed in the side, close to the lower limbs of the patient, of the base, piston columns are arranged in the piston grooves in a sliding fit mode, foot fixing assemblies are arranged at the ends, away from the piston grooves, of the piston columns, and resistance adjusting mechanisms used for adjusting the resistance when the piston columns move communicate with the interiors of the piston grooves. The upper limb training assembly comprises a carrier and a supporting mechanism used for supporting the carrier. A rotating body is rotationally connected to the base. According to the scheme, upper and lower limb cooperative training can be achieved, and rehabilitation efficiency and effect are improved.

The invention discloses a cardiac surgery postoperative care drainage device which comprises a drainage device, a knee joint leg sleeve and an external hanging support, the drainage device is a closed drainage bottle, scales are arranged outside the drainage device, an openable top cover is arranged on the drainage device, a long tube, a short tube and a sealing sleeve are integrated on the top cover, and the sealing sleeve is used for shielding the long tube and the short tube to prevent infection of the long tube and the short tube. The long tube is connected with the cardiothoracic drainage tube; the knee joint leg sleeve is worn at a leg joint of a user and used for restraining a cardiothoracic drainage tube when the user walks, the knee joint leg sleeve comprises a movable support, an upper leg sleeve, a lower leg sleeve and a tube clamp, and the upper leg sleeve and the lower leg sleeve are consistent in structure and connected to the upper end and the lower end of the movable support respectively. The drainage device can be externally hung on the bed frame at the bottom of the sickbed when a user lies in the sickbed so as to keep the drainage bottle stable, and can be worn at the knee joint of the user when the user gets out of the bed and moves, so that the drainage bottle is guaranteed to be lower than the knee, and the drainage device can be used in the bed lying environment and the moving environment of the user.

The utility model discloses a kind of postoperative atrial fibrillation monitoring alarm systems, it is related to the technical field of atrial fibrillation monitoring, and it includes: main control module, detection module, storage module, display module, input-output module and alarm module;Detection module detects the electrocardiosignal, pulse voltage signal and heart sound signal of postoperative patient, sends to main control module;Main control module carries out sampling to electrocardiosignal, pulse voltage signal and heart sound signal, and stores to storage module;According to the instruction of input-output module, the signal after selection sampling is displayed through display module, and the signal stored is selected from storage module and is displayed through display module;Threshold comparison unit of main control module sends signal to alarm module according to heart rate signal, pulse signal, heart sound signal and threshold value, and alarm module sends alarm prompt.The utility model can monitor the sign data of postoperative patient and send alarm, remind medical staff to handle in time, reduce the influence of postoperative atrial fibrillation on patient recovery.

This utility model relates to the field of medical equipment technology and discloses a portable cardiac surgery emergency equipment trolley, including a frame. Electric push rods are rotatably connected to the left and right ends of the front top of the frame. A rotating shaft is rotatably connected to the bottom end of each electric push rod. A rotating cover is rotatably connected to the bottom of the rotating shaft. A rotating column is rotatably connected to the rear side of the rotating cover. The bottom of the rotating column is rotatably connected to the rear side of the top wall of the frame. Bolts are threaded onto the left and right sides of the top wall of the rotating cover. A fixing clip is threaded onto the bottom end of each bolt. A locking groove is formed on the bottom wall of the rotating cover, and the top of the fixing clip engages with the locking groove. In this utility model, the fixing clip can be fixed to the emergency equipment by rotating the rotating cover around the rotating column. The bolts can be rotated to change the fixing clip according to different sizes of emergency equipment, improving the stability of the emergency equipment inside the trolley.

A vest type chest strap for cardiac postoperative fixation comprises a front half chest strap body, a rear half chest strap body and a salt bag, the front half chest strap body comprises a front half chest strap body, and the rear half chest strap body comprises a rear half chest strap body, a left connecting strap, a right connecting strap, a left upper connecting strap and a right upper connecting strap. One ends of the left connecting band, the right connecting band, the left upper connecting band and the right upper connecting band are fixedly connected to the left side, the right side, the left upper side and the right upper side of the rear half chest strap body respectively; the other ends of the left connecting belt, the right connecting belt, the left upper connecting belt and the right upper connecting belt are detachably and fixedly connected with the left side, the right side, the left upper side and the right upper side of the front half chest belt body through hook-and-loop fastener assemblies respectively, the salt bag comprises a salt bag body, and the salt bag body is movably arranged on the right upper connecting belt in a sleeving mode through an installation belt. According to the chest strap, through the design of the blocking cloth, the hook-and-loop fasteners are effectively blocked, accidental adhesion of external articles and the hook-and-loop fasteners is avoided, and therefore the risk that the chest strap or the salt bag moves or falls off due to unexpected movement is reduced.

The application discloses an ultrasonic probe capable of directly reaching into a heart chamber in a heart operation and relates to the technical field of medical devices. The ultrasonic probe comprises a fixing frame arranged around the heart chamber, the fixing frame being connected with the skin of a patient; a telescopic rod being perpendicular to the fixing frame and being connected with the fixing frame through a spherical hinge, the telescopic rod being capable of extending into the heart chamber of the patient; an ultrasonic probe being arranged on the side wall of the end of the telescopic rod away from the fixing frame, the ultrasonic probe being arranged in the circumference of the telescopic rod, and the ultrasonic probe being provided with a plurality of ultrasonic probes; and a camera being arranged at the end of the telescopic rod away from the fixing frame. The length of the ultrasonic probe extending into the heart chamber of the patient can be changed through the arrangement of the telescopic rod, and the different heart chambers of different patients can be detected. The ultrasonic probe can be fixed on the skin of the patient through the arrangement of the fixing frame. The telescopic rod can be rotated according to the different positions of the diseased parts of different patients through the spherical hinge connection between the fixing frame and the telescopic rod, so that the ultrasonic probe can be in a better detection position.

The invention discloses a postoperative monitoring device for cardiac surgery, and belongs to the technical field of cardiac postoperative monitoring devices. Comprising a drainage device, a shaping assembly is arranged on a drainage pipe of the drainage device, the shaping assembly comprises a shaping plate, mounting plates are symmetrically arranged on the two sides of the shaping plate in the width direction, one end of each mounting plate is fixed to the shaping plate, and sliding pipes are arranged on the two mounting plates; the outer wall of the sliding pipe is slidably connected to the other end of the mounting plate, an abutting plate is arranged at the end, facing the middle of the shaping plate, of the sliding pipe, the abutting plate is fixed to the sliding pipe, a fixing plate is arranged at the other end of the sliding pipe and fixed to the outer wall of the end of the sliding pipe, a sliding column is arranged in the sliding pipe, and the outer wall of the sliding column is fixed to the outer wall of the end of the sliding pipe. And one end of the sliding column is slidably connected to the interior of the sliding pipe. According to the technical scheme, the problem that a drainage channel is narrow or blocked due to the fact that a drainage tube is prone to bending deformation when making contact with the edge of a monitoring bed is solved.

This application provides a stent placement device for cardiac surgery, comprising a cannula with an inlet end and an outlet end; the cannula is divided into 2-3 cannula branches at the inlet end; the cannula accommodates 2-3 stent delivery catheters; one stent delivery catheter is inserted from each cannula branch; all stent delivery catheters exit from the cannula outlet end; each stent delivery catheter has a guidewire lumen and a stent balloon pressure chamber; a guidewire is disposed in the guidewire lumen; a stent implanter is disposed at the tip of the stent delivery catheter, and an ultrasound positioning ball is sequentially disposed at the tip of the stent delivery catheter. This application utilizes a structure consisting of a flexible cannula and multiple stent delivery catheters to conveniently and simultaneously provide precise stent implantation for multiple blood vessels; by incorporating an ultrasound positioning ball with a corner reflector to enhance ultrasound reflection, the implantation and detailed operation of the device can be more easily completed under ultrasound monitoring.

The present invention relates to heart surgical instruments, in particular to a valve prosthesis device having a segmented tapered structure. The device comprises an outer stent and an inner stent. The outer stent comprises a disc-shaped structure deployed on the atrial side, an annular structure matched with the valve annulus side, and split structures having different tapers and deployed on the ventricular side. Resilient clamping members are distributed on the peripheral side of the outer stent on the basis of original valve leaflets. The inner stent is connected to the interior of the outer stent, and is internally provided with a valve body. The device further comprises barbs or protrusions selectively or integrally distributed on the annular structure of the outer stent, which are used for anchoring a valve prosthesis to the congenital valve annulus of the heart. The disc-shaped structure and the annular structure are of a round structure or a special-shaped structure; and the split structures having different tapers are distributed at 60°-120°. Using the split tapered structure can reduce obstructions of outflow tracts and improve the adaptability of prostheses.

The present invention discloses a sternal spreader for preventing rib fractures in cardiac surgery, comprising a first spreader arm, a guide plate, a second spreader arm, a spreader plate, a pressure gauge, a brake component and a controller, wherein the first spreader arm is fixed to one end of the guide plate; the second spreader arm is arranged on the guide plate and can move along the guide plate; a guide groove is provided on the opposite side of the first spreader arm and the second spreader arm, and a spreader plate is inserted into each guide groove, and the spreader plate can move relative to the length and height direction of the guide groove; a pressure gauge is slidably provided on the first spreader arm and the second spreader arm, and the detection end of the pressure gauge can abut against the corresponding spreader plate; the brake component is provided on the second spreader arm. In this way, the sternal spreader pressure can be detected and braked when the pressure is too high, thereby avoiding the occurrence of secondary injuries such as rib fractures caused by excessive spreader pressure, thereby reducing the patient's discomfort during postoperative recovery.

The invention discloses cardiac postoperative wound nursing equipment, and belongs to the technical field of cardiac intervention postoperative nursing. A connecting and supporting mechanism for supporting and mounting the arm fixing mechanism is mounted on the mounting frame; an arm fixing mechanism for positioning and fixing arms of a patient is mounted on the connecting and supporting mechanism; a locking mechanism used for being connected with a sickbed is installed on the installation frame. The connecting and supporting mechanism comprises a hinging assembly, a limiting assembly and an arm rotating assembly; the number of the limiting assemblies is two. The limiting assembly and the mounting frame are both connected with the hinge assembly; the limiting assembly is connected with the arm rotating assembly; the arm rotating assembly is connected with the arm fixing mechanism. By means of the mode, a patient can freely change the bending degree between the large closed forearms when the arms are fixed, the comfort degree of the patient is improved, and meanwhile blood circulation of the arms of the patient is facilitated.

The invention belongs to the technical field of pipeline fixing devices, and particularly relates to a cardiac surgery extracorporeal circulation pipeline fixing system which comprises a fixing base and a pipeline clamping module located at the top of the fixing base, and the pipeline clamping module comprises a fixing plate. The device is tightly adsorbed to the surface of an operating table through a fixed suction cup, a second supporting seat is automatically leveled through a hydraulic buffer, the second supporting seat is always in a horizontal stable state, and a first clamping block and a second clamping block are controlled to be buckled through a pipeline clamping module by extruding arc-shaped clamping plates on the two sides; a first clamping block and a second clamping block are fixed through rotation of a limiting block, a pipeline is preliminarily fixed, pressure adjusting plates on the two sides are controlled by a pressure adjusting knob to move in the opposite direction, and the clamping force can be finely adjusted according to the factors such as the material and thickness of the pipeline; the problem that the blood flow stability is influenced by the body position change of a patient or the traction of a surgical instrument and other factors of the pipeline fixing device in the surgical process is solved.

The invention discloses a cardiac postoperative rehabilitation training device, and particularly relates to the field of rehabilitation training devices. Comprising a base, and a T-shaped sliding groove is formed in the base; the seat is arranged on the base and located over the sliding groove; a reset spring is connected between each bearing box and the inner wall of the corresponding sliding groove; the plurality of balancing weights are respectively arranged in the two bearing boxes; each treading block is connected into the corresponding sliding groove in a sliding mode, and a fixing ring is further arranged on one side of each treading block; one ends of the two first traction ropes are connected to the corresponding bearing boxes respectively, and the other ends of the two first traction ropes are provided with drag hooks matched with the fixing rings; and each guide wheel is connected with the corresponding first traction rope in a sliding manner. By the adoption of the technical scheme, the problem that an existing rehabilitation training device cannot enable a patient to conduct autonomous adjustment is solved, the patient can conduct rehabilitation training autonomously according to the condition of the patient, and the training effect is improved.

The application belongs to the field of heart surgery, and particularly relates to a preoperative lung complication prediction method for heart surgery, which comprises the following steps: data preprocessing, including abnormal value processing, missing value processing, feature correlation analysis, data discretization and data standardization; abnormal value processing, filtering to remove abnormal values and irrelevant data in the case data set, so as to avoid interference of abnormal values on subsequent model learning; missing value processing, in which the application guarantees data quality and feature effectiveness from the source through a hierarchical progressive data preprocessing process: filtering of abnormal values and irrelevant data avoids noise interference on model learning, and missing values are processed differently according to missing rate (features are removed when the missing rate is greater than 30%, and features are filled with median, regression prediction or mode according to variable types when the missing rate is less than 30%), which greatly reduces data bias compared with the existing model simple filling method, and improves data integrity and reliability.

The invention relates to the technical field of medical rehabilitation instruments, in particular to an auxiliary limb exercise device and method for critical disease nursing, the auxiliary limb exercise device comprises a linkage plate and a limiting groove formed in the linkage plate, and a limiting rod is slidably mounted in the limiting groove in a limiting manner; the device comprises a linkage plate, a platform and a container on the top of the platform, the linkage plate is rotationally assembled on the platform, the container is located below the linkage plate, a driving piston plate is slidably assembled in the container in a piston mode, the driving piston plate divides the container into an upper energy storage cavity and a lower energy storage cavity, and the two energy storage cavities are filled with shear thickening liquid. A linkage rod is fixed to the top of the driving piston plate, and the top end of the linkage rod penetrates out of the top of the container in a sliding mode and is rotationally connected with a limiting rod in a sleeving mode; the cardiac postoperative lower limb progressive resistance training device can assist a patient to carry out cardiac postoperative lower limb progressive resistance training, and can also prevent the lower limbs of the patient from being collided and damaged due to sudden force loss of the lower limbs of the patient.

The application provides a kind of based on augmented reality navigation heart blood flow imaging system and navigation image generation method, it is related to biomedical optical imaging technical field, the system includes: laser speckle image acquisition unit according to electrocardiogram ECG signal determines acquisition window, and after the imaging focus is actively compensated based on real-time ranging result in the acquisition window, laser speckle image sequence of heart surface is collected;Navigation image generation unit quantifies the degree of stenosis of blood vessel according to blood flow index, and generates blood flow navigation image in combination with laser speckle image sequence;Navigation image projection unit projects blood flow navigation image to the corresponding blood vessel area of heart surface.The application provides based on augmented reality navigation heart blood flow imaging system and navigation image generation method, not only realizes high-fidelity, quantitative blood flow imaging and intuitive, in situ surgical navigation integration, also significantly improves the precision and safety of coronary artery bypass grafting and other heart surgery.

The external sternum fixing device comprises a fixing band and a bandage, one end of the fixing band is connected with the bandage in a sewing mode, the upper side of the other end of the fixing band is connected with a side fixing rod in a sewing mode, and the bandage bypasses the side fixing rod and is detachably connected with the side fixing rod. The external sternum fixing device solves the problems that in the prior art, an external sternum fixing device is inconvenient to operate by a single person of a patient, needs to be assisted by nursing personnel for fixing, cannot be conveniently and timely adjusted in tightness and cannot be conveniently detached, fixed and worn. And the connection relation among all parts cannot be conveniently adjusted, so that the comfort degree is seriously influenced. The external sternum fixing device is reasonable in structural design, is formed by sewing flexible cloth, is comfortable in material, is suitable for long-term use, meets the comfort requirement of a patient after a cardiac surgery on close fitting, and solves the problem of skin itch caused by using cloth chest straps in clinic. The connecting structure is arranged at the armpit position, a user can conveniently adjust the tightness by himself / herself, and the device is suitable for being used by patients in the first-stage and second-stage rehabilitation periods of the heart and the lung.

The percussion device comprises a sleeve, a front end cover, a rear end cover, an air bag, a spring, a piston, a piston rod and a permanent magnet, the front end cover and the rear end cover are arranged at the end of the sleeve, the air bag is arranged at one end of the piston rod, the piston rod penetrates through the piston, the spring is arranged between the air bag and the piston and arranged on the piston rod in a sleeving mode, and the permanent magnet is arranged in the sleeve. The permanent magnet is arranged on the face, away from the air bag, of the piston, the electromagnetic coil and the pressure sensor are arranged on the rear end cover, the cushion pad is arranged on the contact face of the pressure sensor, and when the piston rod moves towards the rear end cover, the end, pointing to the rear end cover, of the piston rod makes contact with the cushion pad. The piston rod pushes the head of the airbag to penetrate through the front end cover. Therefore, the damping system can be matched with the resonance frequency of the lung of the human body to enhance the sputum excretion efficiency, effective sputum excretion is guaranteed, rib injuries are avoided, and the clinical applicability and portability are improved.

The utility model provides an improved chest strap, and relates to the technical field of cardiac surgery supplies, the improved chest strap comprises a main strap, side straps, a fixing strap and a connecting strap, the two ends of the lower side of the main strap are both connected with the side straps, a cushion strap is clamped and pasted between the two side straps, and through the arrangement of the side straps, the cushion strap and a protection pad, when a catheter penetrates, the fixing strap is fixed to the fixing strap when the catheter penetrates into the fixing strap. The catheter can be placed at any position of the catheter penetrating groove, the catheter penetrating groove adopts a through groove mode and is not limited by the position of the catheter, the applicability of the catheter penetrating groove is enhanced, the cushion belt is placed on the lower side of the catheter and makes direct contact with the skin, foreign body sensation brought by the catheter to a patient is reduced, and the protection pad covers the upper end of the catheter and plays a role in protecting the catheter. Through the arrangement of the fixing band and the connecting band, the hook and the hanging ring are fixed, the third loop face hook-and-loop fastener and the fourth hook face hook-and-loop fastener are fixed in an adhering mode, the double-fixing mode is adopted, the fixing effect is better, the hook and the hanging ring are connected in a relatively fixed mode, and the hook and the hanging ring are not prone to being opened.

The application discloses a preparation method of an antibacterial biological patch for cardiac surgery, and comprises the following steps: first, preparing a Fib@CMC@ABX mixed solution; second, preparing a cross-linking solution, pouring the cross-linking solution on the surface of the biological patch, and sealing and storing the cross-linking solution at 4 DEG C after cross-linking reaction; third, placing; and fourth, soaking in a glycerol solution. The antibacterial coating of the antibacterial biological patch for cardiac surgery prepared by the preparation method is not easy to fall off or crack, the antibacterial coating is firmly attached to the biological patch, the continuity of the antibacterial coating is good, the antibacterial coating has long-acting antibacterial effect, can effectively inhibit bacterial growth, and can prevent postoperative infection, and is suitable for cardiac surgery scenes such as heart repair and pericardial reconstruction.

The utility model discloses a cardiac surgery postoperative wound pressurizing nursing belt, which relates to the technical field of medical nursing and comprises a pressing plate and straps arranged on two sides of the pressing plate, and a plurality of groups of pressurizing air bags are arranged on the pressing plate. The side face of the pressing plate is provided with an inflation inlet used for inflating the pressurizing air bag, and the outer side of the inflation inlet is rotationally sleeved with an air inlet. A plurality of groups of air inflation holes are formed in the air inflation port, and the air inflation holes are communicated with the pressurizing air bag through air delivery pipes; a group of air inlet holes corresponding to the inflation holes are formed in the bottom of the air inlet; an annular positioning seat is fixed to the middle of the inflation inlet, and a wavy guide groove is formed in the inner side of the positioning seat. A guide seat is mounted on the air inlet, and the guide seat is connected into the positioning seat through a reset spring; a guide pin clamped in the guide groove is arranged on the side surface of the guide seat; the specific air bag is independently inflated or deflated by adjusting the states of the inflation inlet and the air inlet.

The application discloses a suture removing auxiliary device for heart surgery and belongs to the technical field of surgical suture removing, which comprises a fixing device, a suture cutting device and a suture pulling device are arranged on the fixing device, the suture cutting device is used for cutting the suture on the skin, the suture pulling device is used for pulling the cut suture out of the skin, and the fixing device is used for adjusting the positions of the suture cutting device and the suture pulling device; the fixing device can adjust the positions of the suture cutting device and the suture pulling device in three directions of XYZ, the suture cutting device and the suture pulling device can reach the surgical part needing suture removing, and the fixing seat is installed above a sickbed to facilitate use; when the suture cutting device moves, the movable cutter and the fixed cutter are continuously opened and closed to cut the surgical suture on the skin, and when the suture cutting device moves, the suture pulling claw is driven to continuously pull the cut surgical suture out, the whole action is consecutive, the degree of automation is high, and the continuity is good.