153 results about "Thoracic structure" patented technology

The invention discloses a point cloud-driven thoracic cavity whole organ dynamic reconstruction and respiration monitoring method and system, and the method comprises the steps: constructing a three-dimensional geometric model corresponding to each target structure in a thoracic cavity based on the thoracic medical image data of a target object, and converting the three-dimensional geometric model into static point cloud data; driving the static point cloud data to perform dynamic deformation simulation in a respiratory cycle based on a respiratory movement rule of the target object to obtain dynamic point cloud data synchronized with a respiratory time phase; performing time-space synchronization association on the dynamic point cloud data and the electrical characteristic parameters, and constructing a digital twin thoracic cavity model; deploying a virtual sensing assembly which dynamically deforms along with the thoracic cavity in the digital twin thoracic cavity model, simulating and monitoring the dynamic breathing process of the target object, and generating a virtual physiological signal; and performing signal processing on the virtual physiological signal to obtain a dynamic reconstruction image reflecting respiratory movement. Continuous simulation of the full-breathing movement process is achieved, and the temporal-spatial resolution and diversity of a virtual database are improved.

The invention discloses a thoracic surgery postoperative drainage monitoring data processing method and a thoracic surgery postoperative drainage monitoring data processing system. The method comprises the following steps: synchronously acquiring thoracic respiration dynamic characteristics of a patient and fluid dynamic characteristics of a thoracic closed drainage system through a data acquisition module; the central processing server establishes a time sequence mapping relationship between the two, performs feature fusion analysis, and calculates to obtain a thoracic cavity-pipeline coupling efficiency index; performing logic judgment on the postoperative recovery state of the patient on the basis of the index, and identifying a chest-pipeline fluid transmission state including breathing work limitation, drainage channel blockage and pleural cavity air leakage; and dynamically generating a grading equipment response strategy including adjusting training intensity and triggering pipeline maintenance early warning or analgesia intervention according to an identification result. According to the method, accurate recognition and closed-loop management of postoperative complications are achieved by quantitatively evaluating the linkage relation between respiration driving and drainage response.

The invention relates to a method for preventing and monitoring blood pressure based on terahertz radar electrocardiogram heart rate variation parameters, and belongs to the field of terahertz radar signal processing. The method comprises the steps that a human thoracic cavity micro-motion signal is collected through a terahertz radar, an intermediate frequency signal is obtained through ADC sampling, distance dimension Fourier transform and phase unwrapping processing are carried out, and a target object is obtained; extracting a chest displacement signal containing heartbeat information; band-pass filtering is adopted to preliminarily separate respiration and heartbeat signals, and variation mode decomposition optimized by an ant colony algorithm is introduced to effectively suppress respiration harmonic interference; inputting the heartbeat signal into a multi-modal deep learning framework fusing a convolutional neural network, a long-short-term memory network and a multi-head attention mechanism to realize end-to-end high-precision reconstruction from a radar mechanical vibration signal to a standard electrocardio waveform; r peak detection is conducted on the reconstructed radar ECG signals, and time domain and frequency domain heart rate variability parameters are calculated and used for evaluating the autonomic nerve function state. The method has the effect of improving the monitoring comfort of special crowds.

The invention provides a thoracic surgery teaching assistance method and system, and the method comprises the steps: constructing a thoracic surgery virtual operation interaction environment based on a digital twin technology, and endowing a virtual thoracic cavity tissue model with initial biomechanical parameters; an operation instruction data sequence of an operator for the virtual surgical instrument is collected in real time through the man-machine interaction interface; based on the operation instruction data sequence, calculating an operation disturbance characteristic index representing the motion dispersion degree of an operator in real time by using a sliding time window algorithm; establishing a dynamic evolution mapping model of an operation disturbance characteristic index and a biomechanical parameter, dynamically correcting an initial biomechanical parameter of the virtual tissue according to the index calculated in real time, and when the index exceeds the standard, controlling the parameter to deviate to an easily damaged state so as to simulate histopathologic change caused by rough operation; and performing physical collision response calculation and three-dimensional picture rendering according to the evolved model. According to the invention, dynamic coupling of operation behaviors and organization characteristics is realized, and the physical reality sense of teaching is improved.

A surgical method for expanding a thoracic cage during a surgical procedure includes cutting through a thoracic cage to create an upper thoracic cage portion and a lower thoracic cage portion, separating the first thoracic cage portion and the second thoracic cage portion to open the thoracic cage, and installing, between the first thoracic cage portion and the second thoracic cage portion, a device that holds the first thoracic cage portion and the second thoracic cage portion apart from each other to expand a thoracic cavity of the thoracic cage. The surgical method includes a post-surgical cavity volume of the thoracic cage that is larger relative to a pre-surgical cavity volume of the thoracic cage.

The utility model provides a thoracic cavity pipeline fixing device for nursing, and belongs to the technical field of medical instruments. Comprising a bottom frame pad, a binding piece is connected to the top of the bottom frame pad, a dressing pad is arranged in the bottom frame pad, the dressing pad can be fixed to the surface of a human body through cooperation of the binding piece and the bottom frame pad, the bottom frame pad is fixed to the human body in an adhesive mode, and the binding piece is fixed to the bottom frame pad in an adhesive mode. By arranging the bottom frame pad, the bottom frame pad is directly fixed to the skin of the human body, the binding piece can be fixed to the human body through the bottom frame pad, meanwhile, the drainage tube is fixed, the binding piece and the bottom frame pad are detachably fixed, so that the binding piece can be rapidly detached when a wound is nursed, and the replacement effect is improved; and the pain of the patient caused by repeated tearing is avoided.

The application provides a thoracic cavity data monitoring method and device, electronic equipment and a storage medium. The method sets an alternating drainage mode and a breathing mode in a thoracic cavity drainage device, and adds a breathing component. The original drainage component performs drainage in the drainage mode and suspends drainage in the breathing mode. The added breathing component performs breathing pleural pressure monitoring in the breathing mode. The application determines that the work needs to be stopped when the continuous drainage flow data, the continuous air leakage flow data and the continuous breathing pleural pressure data all meet the reference index. The determination is based on the continuous breathing pleural pressure data rather than discrete data, so that secondary drainage is not needed, that is, the application is more accurate in determining the stopping time of the thoracic cavity drainage device.

A robot includes a torso structure, a head structure, robotic arms, gripper structures, and a chassis driving structure. The torso structure includes a lower leg assembly, a thigh assembly, and a thoracic cavity assembly. A first torso motor, a second torso motor, and a third torso motor enable a multi-joint rotation within a plane formed by a first direction and a second direction. A fourth torso motor drives the thoracic cavity assembly to rotate relative to the thigh assembly around an output shaft of the fourth torso motor within a plane formed by the second direction and a third direction. Two opposite sides of the end of the thoracic cavity assembly facing away from the thigh assembly are provided with the robotic arms respectively, and the gripper structures are securely mounted at tail ends of the robotic arms respectively.

The invention belongs to the technical field of postoperative compression hemostasis equipment, and particularly relates to a thoracic cavity postoperative compression hemostasis protection device which comprises a compression cloth piece, a through hole is formed in the upper surface of the compression cloth piece, a protection cover is fixedly connected to the hole wall of the through hole, and two symmetrically-distributed arc-shaped open grooves are formed in the outer wall of the bottom end of the protection cover; the bottom end of the protective cover is fixedly sleeved with an elastic sealing rubber cover, and the inner wall of the protective cover is fixedly connected with a compression hemostasis mechanism. The chest post-operation compression hemostasis protection device not only has the functions of compression hemostasis, sealing isolation protection and visual compression force, but also has the capability of accurately controlling the compression force to avoid the situation that the compression force is too large or too small, and also has the function of preventing body tissues on the two sides of an incision after the chest operation from being pulled to prevent the incision from being secondarily damaged, so that the safety of a patient is improved. The use reliability of the device is effectively improved, the recovery safety and comfort of a patient are improved, and the compression hemostasis and recovery effects of the patient after the thoracic surgery are guaranteed.

The application provides a safe and effective water seal bottle for closed drainage of thoracic cavity, a liquid storage cavity is connected with the right top end of a U-shaped negative pressure display, the middle part of a right tube is connected with a water seal cavity, the top end of a left tube is communicated with atmosphere, and a thoracic cavity effusion and gas drainage tube is arranged on the top of the liquid storage cavity; the top of the water seal cavity is sequentially connected with a drainage flow control valve, a negative pressure adjusting valve and a negative pressure generator; a first floating ball float rod in the liquid storage cavity penetrates through a first connecting tube upward and is fixed to an outer shell; a second floating ball is arranged on the upper end of the left tube, and a third floating ball is arranged on the top end of the right tube. The first connecting tube is provided with a one-way valve; the negative pressure display and the water seal cavity are filled with liquid, the liquid surface is higher than the right side of the negative pressure display when there is no negative pressure, the liquid is connected with the water seal cavity, and a slanting tube is arranged below the liquid surface of the water seal cavity; the application is injected with standard water when leaving the factory, liquid does not need to be injected into the water seal cavity and the negative pressure observation cavity when being used, and the application is provided with an over-negative pressure automatic protection function, a slanting tube observer and a flow adjusting valve, is convenient to move and carry, and prevents the liquid in the liquid storage cavity from flowing back.

The application discloses a skin tension device suitable for thoracentesis, and relates to the technical field of thoracentesis. The tension device comprises a base, a moving stretching component, a thoracentesis limiting component, an angle adjusting device and a supporting device. When working, a patient sits on the base, the height of the base can be adjusted according to the height of the patient, and the supporting device can provide suitable back support for the patient. After the patient sits down, medical staff drives the angle adjusting device to adjust the whole thoracentesis tension device to a suitable angle of the thoracic cavity area to be punctured of the patient, then the moving stretching component generates a moderate tension on the skin, and the skin at the puncture site is taut, thereby creating good conditions for subsequent puncture operation. Meanwhile, the thoracentesis limiting component can preliminarily guide and limit the direction and depth of the puncture needle. The skin is taut through the moving stretching component, and the application has the effect of meeting different puncture requirements.

The invention relates to the technical field of medical instruments, in particular to a thoracoscope for thoracic surgery, which comprises a thoracoscope body sleeve and a thoracoscope tube, the thoracoscope body sleeve is fixedly connected with the thoracoscope tube, and a working opening is formed in one end, far away from the thoracoscope body sleeve, of the thoracoscope tube; a working assembly is arranged on the inner side of the endoscope tube and located at the end away from the endoscope body sleeve in a sliding mode, and a driving mechanism for controlling the working assembly to linearly move in the length direction of the endoscope tube is arranged in the endoscope body sleeve. By the adoption of the technical scheme, the working assembly at the end of the endoscope tube can be protected, a camera is prevented from being polluted before an operation or in the process of being inserted into the thoracic cavity of a patient, the camera shooting effect is prevented from being affected, and the operation efficiency is improved to a certain degree.

The invention discloses a drainage device for cardiothoracic surgery, and belongs to the technical field of medical instruments. Comprising a drainage device body, the drainage device body comprises a drainage tube, the portion, close to the chest wall, of the drainage tube is sleeved with a fixing assembly, the fixing assembly comprises a pasting plate, the pasting plate is provided with a first notch extending from the middle to one side face, and a rotating base is arranged in the middle of the pasting plate; one end of the rotating seat is fixed to the pasting plate, a spherical groove is formed in the other end of the rotating seat, a second notch extending outwards from the middle is formed in the rotating seat, a hollow ball head is arranged in the spherical groove, the ball head is connected into the spherical groove in a universal mode, a third notch is formed in the outer wall of the ball head, and the third notch is communicated with the second notch. A lower connecting pipe is arranged on the portion, located outside the rotating seat, of the ball head, and a first external thread is arranged on the outer wall of the lower connecting pipe. The technical scheme is used for improving the connection stability of the drainage tube and the thoracic cavity.

The application discloses a drainage device for cardiothoracic surgery and belongs to the technical field of medical devices. The drainage device comprises a drainage device main body, the drainage device main body comprises a drainage tube, a fixing assembly is arranged on the part of the drainage tube close to the chest wall in a sleeving mode, the fixing assembly comprises a sticking plate, the sticking plate is provided with a first notch extending from the middle part to one side surface, the middle part of the sticking plate is provided with a rotating seat, one end of the rotating seat is fixed to the sticking plate, the other end of the rotating seat is provided with a spherical groove, the rotating seat is provided with a second notch extending outward from the middle part, the spherical groove is provided with a hollow ball head, the ball head is connected to the spherical groove in a universal mode, the outer wall of the ball head is provided with a third notch, the part of the ball head outside the rotating seat is provided with a lower connecting pipe, and the outer wall of the lower connecting pipe is provided with a first outer thread. The technical scheme is used to improve the connection stability of the drainage tube and the thoracic cavity.

The application discloses a point cloud driven thoracic cavity whole organ dynamic reconstruction and respiratory monitoring method and system, and the method implementation comprises the following steps: based on the thoracic medical image data of a target object, constructing three-dimensional geometric models corresponding to each target structure in the thoracic cavity, and converting the three-dimensional geometric models into static point cloud data; based on the respiratory motion law of the target object, driving the static point cloud data to perform dynamic deformation simulation in a respiratory cycle, and obtaining dynamic point cloud data synchronized with the respiratory phase; synchronously associating the dynamic point cloud data with electrical characteristic parameters in time and space, and constructing a digital twin thoracic cavity model; deploying a virtual sensor assembly that dynamically deforms with the thoracic cavity in the digital twin thoracic cavity model, and simulating and monitoring the dynamic respiratory process of the target object, and generating a virtual physiological signal; and through signal processing on the virtual physiological signal, a dynamic reconstruction image reflecting the respiratory motion is obtained. The continuous simulation of the whole respiratory motion process is realized, and the time and space resolution and diversity of the virtual database are improved.

1. Name of the product in this design: Anastomosis device (inserted fully endocavitary electrically powered tubular type - straight). 2. Application of this design: for laparoscopic anastomosis of esophagus and jejunum, intestine to intestine, or thoracoscopic anastomosis of esophagus and jejunum or esophagus and stomach within the thoracic cavity. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1. 5. Other situations requiring explanation: Part A is made of transparent material.

The invention relates to the technical field of cervical vertebra treatment, and particularly discloses a cervical vertebra therapeutic apparatus which comprises an outer frame body, an inner frame body and a supporting plate, the inner frame body is fixedly connected to the inner side of the outer frame body, and a chin support is arranged on the upper portion of the inner side of the outer frame body and used for supporting the chin; the supporting plate is rotationally connected to the inner side of the inner frame body, and the supporting adjusting assembly is used for adjusting the supporting angle of the supporting plate; the tightness adjusting assembly is used for adjusting the wearing tightness; and the integrated regulation and control part is mounted on the outer frame body. Through the arrangement of the support adjusting assembly and the integrated control part, the adjustability of the support angle of the support plate is realized, so that the support distance between the chin and the thoracic cavity and the clavicle is conveniently adjusted, the treatment requirements of patients with different body types can be met, and the practicability and the use flexibility are improved; the tightness adjusting assembly and the supporting adjusting assembly are uniformly driven through the integrated adjusting and controlling part, the two adjusting structures are integrated together, and the compact degree of the structure is improved.

The utility model discloses a respiratory muscle training vest which comprises a vest body, an air inflation piece and four air bag pieces, the four air bag pieces are arranged on the front side of the vest body in a matrix mode and are all connected and communicated with the air inflation piece through pipelines, the two air bag pieces located on the upper portion correspond to the positions of chest cavities on the two sides respectively, and the air bag pieces are arranged on the lower portion of the vest body. The two air bag pieces located on the lower portion correspond to the positions of the abdominal cavities on the two sides respectively, the inflation pieces are used for inflating the air bag pieces, and the four air bag pieces apply compression force to the chest cavity and the abdominal cavities respectively, so that after the vest body is worn, the four air bag pieces can be inflated synchronously through the inflation pieces, and the chest cavity and the abdominal cavities can be inflated synchronously. At the moment, the air bag piece expands to apply pressure to the chest and the abdominal cavity, so that the breathing difficulty of the wearer is improved, and respiratory muscles are exercised.

The invention relates to the technical field of humanoid robots, in particular to a humanoid robot shell assembly which comprises a front side framework and a rear side framework which are mutually spliced and encircled, a complete thoracic cavity body cavity is formed after the front side framework and the rear side framework are spliced, and the front side framework and the rear side framework are correspondingly provided with positioning buckle structures and stud locking structures which are matched with each other. Assembling pre-positioning is achieved through the buckles, firm locking is achieved through cooperation of the studs, and loosening and deviation of the splicing parts are avoided. A multi-step type connecting table structure is arranged at an opening in the upper end defined by the framework and can be accurately matched with the neck connecting assembly and the thoracic cavity connecting component, the coaxiality and butt joint precision of the thoracic cavity framework and the upper connecting component are guaranteed, and the overall structural strength and stress uniformity are improved. According to the assembly, the assembly process can be effectively simplified, the cooperative adaptability of the framework and peripheral core components is enhanced, the structural rigidity, the operation stability and the assembly convenience are considered, and the long-term bionic dynamic operation requirement of the humanoid robot can be met.

The invention discloses an ultrasonic self-adaptive scanning method and system for EIT dynamic path planning, and belongs to the technical field of medical imaging. Reconstructing an impedance distribution image in real time based on EIT and detecting an abnormal region; the coordinates of the abnormal area are mapped to an ultrasonic coordinate system, and breathing phase compensation is carried out; planning an ultrasonic beam scanning path according to clinical constraint conditions; controlling the ultrasonic beam to scan along the planned path; performing image analysis on the scanning area; and updating system parameters according to an analysis result. According to the method, abnormal coordinates detected by EIT are accurately converted into an ultrasonic beam deflection angle, clinical constraint path planning of a high-cost area of a rib shielding area and breathing phase dynamic compensation taking end expiratory as a benchmark are combined, so that the system realizes full-closed-loop control from abnormal sensing, path planning to beam execution, and the accuracy of the system is improved. The problems of scanning failure caused by rib shielding and coordinate drifting caused by respiratory movement in clinic are effectively solved, and the reliability of dynamic monitoring of the thoracic cavity is remarkably improved.

The invention discloses a pericardium thoracocentesis effusion drainage device and method, and relates to the field of medical care, the pericardium thoracocentesis effusion drainage device comprises a liquid storage device, a liquid storage cavity is formed in the liquid storage device, a positioning frame is fixedly mounted at the top of the liquid storage device, a fixing pipe is fixedly inserted in the positioning frame, the bottom end of the fixing pipe extends into the liquid storage cavity, and the top of the fixing pipe is fixedly sleeved with a mounting cylinder; a threaded opening is formed in an inner ring of the mounting cylinder, a drainage tube is inserted into the inner ring of the mounting cylinder, external threads are arranged at one end of the drainage tube, the drainage tube is inserted into the threaded opening in a threaded mode, a sponge block is fixedly mounted in the liquid storage cavity, a flow guide plate is obliquely arranged in the liquid storage cavity, a fixing plate is fixedly arranged in the liquid storage cavity, and a drainage opening is formed in the fixing plate; according to the pericardium and thoracocentesis effusion drainage device, people do not need to frequently put on and take off the device, drainage can be conveniently conducted no matter a patient walks or lies flat, great convenience is brought to the patient, the effusion amount of word drainage of the patient can be automatically controlled, and safety is improved.

The thoracic cavity closed drainage tube comprises a drainage tube body, a sliding sleeve is arranged in the drainage tube body, an annular groove is formed in the outer side surface of the sliding sleeve, a first annular elastic air bag and a second annular elastic air bag are arranged in the annular groove, and a plurality of annularly-distributed positioning holes are formed in the drainage tube body; the sliding sleeve is connected with a second air pipe pulling the sliding sleeve to move in the drainage pipe, one end of the second air pipe communicates with the second annular elastic air bag, and the other end of the second air pipe extends out of the drainage pipe and is connected with an air pressure detection unit. The side holes can be blocked in the indwelling catheter process, liquid in the chest cavity is prevented from flowing out of the side holes too early, and whether the last side hole smoothly enters the chest cavity or not can be rapidly and visually judged according to the reading of the external air pressure detection unit. The positioning holes are further used for being matched with the positioning holes to form a plurality of flexible positioning convex points to assist the drainage tube in positioning, and great convenience is brought to intubation operation of the drainage tube.

The utility model discloses thoracic cavity double-joint operating forceps which comprise a forceps rod, a push rod connected with the lower portion of the forceps rod in a sliding mode, a movable forceps head switching block connected with the end of the forceps rod in a rotating mode, a rotating type forceps head rod arranged on the movable forceps head switching block, and the lower portion of the movable forceps head switching block is connected with the push rod in a rotating mode. The end part of the push rod is also provided with a fixed tong head rod matched with the rotary tong head rod; the other end of the forceps rod is provided with a forceps rod connecting handle and a first handle, the other end of the push rod is provided with a movable handle, the end of the movable handle is provided with an adapter, the upper end and the lower end of the adapter are rotationally connected with the forceps rod and the push rod respectively, and the other end of the movable handle is provided with a second handle. And snake-head-shaped chucks are inserted into the end parts of the rotary forceps head rod and the fixed forceps head rod. The utility model has the characteristics that the plier head can be independently replaced and the replacement operation is convenient.

The invention belongs to the technical field of medical equipment, and particularly relates to a postoperative rehabilitation nursing device for thoracic surgery, which comprises a nursing box and a nursing tube fixedly arranged on the side wall of the nursing box, a hydrops drainage tube and a pneumatosis drainage tube are fixedly arranged in the nursing tube, and the postoperative rehabilitation nursing device further comprises a drainage tank fixedly arranged on the inner wall of the bottom of the nursing box, the end, located in the nursing box, of the hydrops drainage tube is fixedly connected with the top of the drainage tank, a negative pressure pump is fixedly arranged on the inner wall of the top of the nursing box, and the output end of the negative pressure pump extends out of the nursing box and is fixedly provided with a first filter. Through cooperation of the pressure detection mechanism, the drainage adjusting mechanism, the anti-falling mechanism and the PLC, precise partitioned drainage of thoracic effusion and pneumatosis after the thoracic surgery, intelligent response of pressure sudden rise and self-adaptive stable fixation of a pipeline are achieved, meanwhile, the effusion amount can be monitored in real time, multiple backflow prevention is achieved, and the drainage effect is good. The accuracy, the safety and the stability of postoperative drainage are greatly improved.

The invention discloses a drainage device, belongs to the technical field of drainage, and aims to solve the problems that when an existing closed drainage device for the thoracic cavity is used, a water-sealed bottle always generates negative pressure adsorption on the thoracic cavity of a patient, so that hydrops and air in the thoracic cavity of the patient are discharged into the water-sealed bottle; and the patient is difficult to breathe due to continuous long-time negative pressure adsorption on the thoracic cavity of the patient. The device comprises a placing frame, a drainage bottle is arranged in the placing frame, and a drainage tube and a ventilation tube are arranged on the drainage bottle; a supporting frame is further arranged at the top of the containing frame, and an extrusion device is arranged at the top of the supporting frame. The extrusion device comprises two cams which are symmetrically arranged, the two cams are rotationally connected to the top of the supporting frame through two rotating shafts correspondingly, and the ventilation pipe is located between the two cams; the extrusion device further comprises a driving mechanism used for driving the two cams to rotate at the same time. According to the drainage device, the problem that an existing drainage device continuously conducts negative pressure adsorption on the thoracic cavity of a patient for a long time, and therefore the patient expires difficultly can be solved.

The utility model discloses a thoracic cavity closed drainage bottle, which comprises a drainage bottle, the drainage bottle is provided with a drainage tube and a negative pressure tube, the end part of the drainage tube is provided with two switch valves A, a suction head is arranged between the two switch valves A, the negative pressure tube is provided with a switch valve B, and the end part of the negative pressure tube is connected with a portable pressure regulator. And the drainage bottle is provided with a detachable portable belt. Compared with the prior art, the drainage tube has the advantages that the switch valve A plays a role in isolating air, so that the air is prevented from entering the thoracic cavity along the catheter and the drainage tube, and the safety of drainage liquid sample collection is high; the negative pressure tube is directly connected with the portable pressure regulator without connecting a long catheter, so that the patient is not interfered to get out of bed to move.

The application discloses a kind of based on acoustic wave FMCW's respiratory frequency detection method, belong to acoustic wave signal processing technical field;Method is: utilize mobile phone loudspeaker to generate a segment frequency continuous change acoustic wave signal, form continuous acoustic wave detection sequence;Mobile phone microphone receives the acoustic wave signal that is reflected back synchronously;To the acoustic wave signal that is reflected back received filtering processing;With reflected signal, the distance change curve of thoracic cavity with breathing movement is generated by autocorrelation operation to transmission signal;Distance change curve is carried out smoothing processing;The main frequency frequency is obtained by fast fourier transform, and respiratory frequency is calculated.The present application effectively suppresses environmental noise interference by using the advantages of FMCW technology, analyzes the autocorrelation coefficient of reflected signal, accurately extracts the thoracic movement information related to respiration, and realizes the accurate detection of human respiratory frequency;Using autocorrelation function is easier to find peak, more easily tracked nature, greatly increase the convenience of user.

The invention discloses an anti-suck-back thoracic closed drainage device which comprises a drainage bottle and a drainage tube, a hydrops cavity and a water seal cavity are arranged in the drainage bottle, a drainage tube connector is arranged at the upper end of the hydrops cavity, the drainage tube is connected with the upper end of the drainage tube connector, the lower end of the drainage tube connector is connected with an inner tube, and the inner tube is made of flexible materials and can be bent; an anti-suck-back assembly is arranged at one end of the inner tube; the suck-back prevention assembly comprises a buoyancy cylinder, and one end of the buoyancy cylinder is rotationally connected with the end of the inner pipe so that the buoyancy cylinder can rotate around the central axis of the buoyancy cylinder. The inner pipe is communicated with a cavity in the buoyancy cylinder; an air inlet / outlet is formed in one side of the buoyancy cylinder, and a counterweight body is arranged on one side, opposite to the air inlet / outlet, of the buoyancy cylinder. According to the closed thoracic drainage tube, the path of suck-back of effusion is blocked from the source, bacteria possibly bred in the effusion cannot flow back to the thoracic cavity of a patient through the drainage tube, the occurrence risk of serious complications such as infection in the thoracic cavity and pyothorax is greatly reduced, and the safety of closed thoracic drainage treatment is improved.

The utility model belongs to the technical field of medical auxiliary equipment, and particularly relates to a thoracic surgery postoperative chest drainage fixing device which comprises a shell, and the back face of the shell is connected with a surgery binding belt; the sliding grooves are formed in the side face of the shell in an annular distribution mode, clamping blocks are connected into the sliding grooves in a sliding mode, the clamping blocks are hollow, and through holes are evenly formed in the arc-shaped ends of the clamping blocks; the adjusting mechanism is arranged on the shell, and when the adjusting mechanism operates, the multiple clamping blocks are driven to be close to or away from each other; the negative pressure mechanism is connected to the clamping block; the guide rods are annularly distributed and connected to the outer surface of the shell; and the limiting mechanism is arranged at the guide rod. The drainage tube can be effectively prevented from falling off, the risk of damage to the drainage tube material is reduced, smooth discharge of gas and blood in the thoracic cavity is guaranteed, postoperative infection can be prevented, and wound healing is promoted.

The invention discloses a neonatal umbilical artery and vein puncture catheterization training model which is characterized by comprising a neonatal model and a puncture needle model. A simulated heart is arranged in the thoracic cavity of the newborn model; the aorta and the inferior vena cava are connected with the simulated heart; the puncture needle model is rod-shaped, and a working part is arranged at the front end of the puncture needle model; the periphery of the vein puncture path and the artery puncture path is sleeved with a plurality of sets of electromagnetic coils in the axial direction; each group of electromagnetic coils is provided with an independent main switch, and the main switches of all the electromagnetic coils are arranged along a puncture path one by one, so that the main switch can be triggered when the working part of the puncture needle model passes through one main switch, and the corresponding electromagnetic coil is electrified to generate an acting force in a correct puncture direction on the working part. According to the invention, force sense direction guidance can be provided during puncture practice.