56 results about "Pericardium" patented technology

The invention provides a four-dimensional cardiac function imaging method and device based on a biological magnetic signal. The method comprises the following steps: acquiring a magnetocardiogram signal of a to-be-detected object and dynamic structure information of a target trunk part in a full cardiac cycle; wherein the target trunk part at least comprises double lungs, a trunk, a heart cavity of the trunk and a pericardium structure, and the dynamic structure information comprises a contour structure and a multi-frame dynamic image; performing spatial registration on the dynamic structure information and the sensor for acquiring the magnetocardiogram signal to obtain coordinates of the sensor in a coordinate system of the dynamic structure information; according to the dynamic structure information, the coordinate of the sensor and the magnetocardiogram signal, calculating and reconstructing cardiac electrical excitation activity to obtain a calculation and reconstruction result; and converting the calculation reconstruction result into a four-dimensional visual image. According to the method, heart magnetic imaging and heart movement are combined, on the basis of obtained dynamic structure information and heart magnetic signals, the characteristics of biological magnetic signals are fully utilized, and the signal processing technology is integrated through space registration, so that accurate reconstruction of four-dimensional representation of the heart and visual display of functional activities are realized; therefore, the obtained four-dimensional visual image can completely represent the dynamic electrophysiological activities of the whole heart (including epicardium, endocardium and intrawall tissues) in a cardiac cycle, and a technical scheme with different concepts is provided for non-invasive imaging of cardiac electrical excitation activities.

Provided in the present application are a biomagnetic signal-based four-dimensional cardiac function imaging method and device. The method comprises: acquiring a cardiac magnetic signal of a subject to be tested and dynamic structure information of a target torso part within a full cardiac cycle, wherein the target torso part at least comprises two lungs, a torso, and a heart chamber and a pericardium structure thereof, and the dynamic structure information comprises a contour structure and a plurality of frames of dynamic images; performing spatial registration on the dynamic structure information and a sensor acquiring the cardiac magnetic signal to obtain coordinates of the sensor in a coordinate system of the dynamic structure information; calculating and reconstructing a cardiac electrical excitation activity based on the dynamic structure information, the coordinates of the sensor, and the cardiac magnetic signal to obtain a calculation and reconstruction result; and converting the calculation and reconstruction result into a four-dimensional visualization image.

The utility model relates to a cardiovascular internal medicine technical field especially, it is a pericardial drainage patient fixing device, including wearing bandage mechanism, it includes first elastic bandage main part and second elastic bandage main part, the inner wall of first elastic bandage main part and second elastic bandage main part all is equipped with the protection layer, positioning fixed establishment, it includes the positioning frame, the sidewall of positioning frame both ends is fixedly connected with first elastic bandage main part and second elastic bandage main part one end respectively, the inside of positioning frame is equipped with first through -hole, and the inside of first through -hole is provided with pericardial drainage tube main part. The utility model first through pulling the push board to drive the connecting rod inside the second through -hole sliding and pulling the positioning plate extrusion first spring main part and second spring main part deformation, to make the positioning plate and rubber pad through first spring main part and second spring main part elastic recovery to reciprocating sliding, thereby being convenient for the positioning fixed of pericardial drainage tube main part.

To provide suitable devices, systems, and methods for percutaneous pneumatic cardiac support. [Solution] The cardiac support system includes a pneumatic effector implanted beneath the pericardium and across the myocardial surface covering the patient's left ventricle. A port receives an implanted, percutaneously introduced cannula. The port is connected to supply the drive gas received from the cannula to the pneumatic effector. An external drive unit includes a pump assembly and a control circuit that operates the pump to activate the pneumatic effector in response to the patient's sensed cardiac rhythm. A connecting tube has a pump end connected to the pump and a percutaneous port connection end attached to the implantable port.

This invention discloses a pericardial effusion puncture and drainage device with angle adjustment, including an installation mechanism, a support mechanism in the middle of the installation mechanism, and an isolation mechanism at the top of the installation mechanism. A puncture mechanism is located in the middle of the support mechanism, and clamping assemblies are fixed at both ends on one side of the support mechanism. A tube guide mechanism is located on one side of the puncture mechanism. This invention utilizes the cooperation between the support mechanism and the puncture mechanism on the installation mechanism. A first worm gear in a first adjustment box drives a first worm wheel, and a second worm gear drives a second worm wheel, which in turn drives a large gear via a small gear. During puncture, the doctor can flexibly adjust the puncture position and finely adjust the puncture angle according to the patient's condition, avoiding prolonged holding of the puncture device, freeing the doctor's hands, ensuring a stable puncture process, making the operation more convenient for the doctor, and improving work efficiency.

The present application relates to a kind of dry-wet dual-purpose pericardial puncture device, including shell, multicavity tube, puncture needle, puncture guide wire, multicavity tube is arranged on shell;Puncture needle is slidably arranged in one of the cavities of multicavity tube;Puncture guide wire is slidably arranged in other cavities of multicavity tube.The present application combines puncture needle and puncture guide wire by multicavity tube, is designed into integrated structure, is suitable for dry and wet pericardial puncture, and can be operated only by different use modes.And the structure of the present application is simple, and the difficulty of operation is low, and doctor can simply and conveniently puncture, and too much experience can also be completed surgery, and the risk coefficient of puncture method and process is lower, and it is convenient for more hospitals and doctors to use.

The present invention provides a method and / or device for applying an ideal amount of tenting force to the pericardial layer 911. [Solution] The elongated guidewire assembly 200 has a distal segment 205 configured to be selectively operated along the elongated introducer assembly 102. The distal segment is configured to selectively transmit a tenting force 700 from the elongated guidewire assembly to the first biological wall 910 after the distal segment has selectively extended away from the distal introducer assembly, with the distal segment at least partially in contact with the first biological wall 910.

Systems (100), computer-readable media, and methods for detecting a first indicator of a pericardium-related issue based, at least in part, on first heart sounds measurements; detecting a second indicator of the pericardium-related issue based, at least in part, on one or more of the following: posture, restlessness, respiratory activity, cardiac activation signals, oxygen saturation, and second heart sounds measurements; and generating an alert in response to detecting the first indicator and the second indicator.

In some examples, a tool for, e.g., creating a sub-sternal tunnel in a patient or other use, is described. The tool may include a handle and a tunneling shaft coupled to the handle. The tunneling shaft extends from a proximal end to a distal end, and at least a portion of the tunneling shaft extends in a curved orientation between the first end to the distal end. The distal end of the tunneling shaft includes a cutting tool having a sharp edge. The cutting tool is moveable from a recessed position in which the sharp edge of the cutting tool is recessed into the distal end of the tunneling shaft to a deployed position in which the sharp edge of the cutting tool extends beyond the distal end of the tunneling shaft in the deployed position, e.g., to cut pericardium, scar tissue, and / or connective tissue with the sharp edge.

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.

A method for performing a robotic-assisted orthotopic heart transplant includes forming a working port subareolarly by a mini-thoracotomy at a working intercostal space, forming additional ports for robotic arms, and arranging robotic arms through the ports. A first robotic arm with first forceps extends through a second port lateral to a mid-clavicular line, while second and third robotic arms containing an imaging device and second forceps operate through the working port. A fourth robotic arm with scissors or needle holder extends through a third port proximal to an anterior axillary line. The method includes cannulating for cardiopulmonary bypass, opening the pericardium, cross-clamping the aorta, removing the native heart, and performing sequential anastomoses of the donor heart including the left atrium, pulmonary artery, aorta, inferior vena cava, and superior vena cava.

The utility model discloses a pericardium patch measuring device which comprises a handle, a handle sliding block and a range finder, a graduated scale extending from the head of the handle to the tail of the handle is arranged on the handle, the handle sliding block and the range finder are arranged on the handle in a sleeved mode, the handle sliding block is connected with the range finder, and the handle sliding block and the range finder can move in the extending direction of the handle. The handle sliding block moves back and forth on the handle so that the range finder can be driven to be unfolded or folded. According to the pericardial patch measuring device, the distance measuring device is driven to be unfolded or folded through the front-back movement of the handle sliding block on the handle, and therefore the size of a pericardial patch is measured through unfolding or folding of the distance measuring device. According to the utility model, accurate measurement of the size of the pericardium patch can be realized by adjusting the handle sliding block, one-hand operation, real-time reading and multi-time measurement can be realized without replacing instruments, mismatching of the size of the patch is not easily caused, the operation time can be obviously shortened, and the operation success rate is obviously improved.

A heart valve prosthesis for replacing a native atrioventricular valve of the heart. The prosthesis includes a housing component that is configured to be radially expandable and compressible between a radially compressed state and a radially expanded state to engage structure of the native atrioventricular valve to fix the housing component relative to the native atrioventricular valve. The housing component includes a housing body and an annular sealing element connected to an atrial end of the housing body. The annular sealing element is made of polyester and is reinforced with wire. A valve component is configured to be radially expandable and compressible between a radially compressed state and a radially expanded state within the housing component. The valve component includes a valve body having a valve passage extending therethrough and three leaflets made from pericardium secured to the valve body.

The utility model discloses a novel pericardium puncture outfit which comprises a main body, a needle head stabilizing cover installed on the main body, a hose installed on the needle head stabilizing cover, a connecting device installed at the other end of the hose, a flow dividing device installed in the connecting device, a rotating column installed in the flow dividing device, a rotating handle installed on the rotating column and a bottom cover installed below the rotating column. The left side of the connecting device is provided with a needle tube, a piston is installed in the needle tube, the piston is provided with a push rod, the left side of the push rod is provided with a blocking piece, the blocking piece is provided with a needle tube stabilizing cover, and the left side of the needle tube stabilizing cover is provided with a push head. A needle head and a needle tube of the novel pericardium puncture outfit are separated, and a connecting device and a shunting device are arranged between the needle head and the needle tube. And when the needle tube is almost full, the liquid can be continuously pumped after the accumulated liquid is discharged by operating the connecting device. The mode omits the needle tube inserting and pulling step of a traditional puncture outfit, the needle head is kept stable, related risks are reduced, and operation safety and effectiveness are improved.

HA-paclitaxel conjugate for use in the loco-regional treatment of the mesothelioma, i.e., the malignant pleural mesothelioma, pericardial mesothelioma and peritoneal mesothelioma, preferably malignant pleural mesothelioma, and relative pharmaceutical compositions are described.

The present application relates to a kind of visible pericardial effusion puncture device, belong to medical instrument field, the present application is integrated in the inside of puncture needle, it is beneficial to produce smaller wound, it is beneficial to the recovery of patient after operation.Simultaneously, by support piece, endoscope is firmly fixed in the inside of puncture needle, avoid the shaking of endoscope when puncture, influence doctor operation.Using the structure setting of the elasticity of support piece and its left abutment portion includes left arc segment, left horizontal section and left vertical section, right abutment portion includes right arc segment, right horizontal section and right vertical section, it can realize stable position locking, and no longer need as commonly used Y type or T type support structure, to reduce the space occupied by support piece, so as to leave sufficient effusion extraction space at opening, while reducing wound, reduce the possibility of pericardial effusion block.

The present invention relates to a method for treating biological tissue and a biological tissue obtained by the treatment method, and specifically to a method for treating biological tissue so as to suppress the calcification, risk of biofilm adherent over pericardium and strength reduction of the tissue due to treatment. The invention is also directed to bioprosthesis and transcatheter heart valves containing the biological tissue.

The application discloses a method and device for judging pericardial effusion by using a heart ultrasound video responsibility frame, and the method comprises the following steps: collecting a heart ultrasound standard section video, unifying a format, and training a static image classification neural network model by using the heart ultrasound standard section video; building a pericardial effusion judgment model based on the static image classification neural network model, inputting a heart ultrasound standard section video to be identified into the pericardial effusion judgment model; the pericardial effusion judgment model outputs a feature matrix of the video, a random forest model is used to calculate the feature matrix of the video to obtain a feature importance matrix of the video, a responsibility frame used for video benign and malignant judgment is selected based on information entropy reduction and the feature importance matrix of the video; and the static image classification neural network model outputs whether the heart ultrasound video has pericardial effusion based on the responsibility frame used for video benign and malignant judgment. The application can realize automatic identification of whether there is pericardial effusion in an ultrasound heartbeat video.

The invention discloses a rapid positioning, puncturing and extracting device for pericardial effusion in the cardiology department, and belongs to the field of medical surgical instruments. The rapid positioning, puncturing and extracting device comprises an operation table, a mechanical arm is fixedly installed on the operation table, an adjusting mechanism is arranged on the mechanical arm, and an electric telescopic rod included in the adjusting mechanism is connected with a puncturing assembly through a connecting assembly; a puncture needle main body included in the puncture assembly is used for puncturing an affected part to extract hydrops; the maintaining assembly is arranged on a clamping head in the puncturing assembly. The position and angle of the electric telescopic rod can be finely adjusted through the adjusting mechanism, so that the electric telescopic rod drives a subsequently connected part to be accurately aligned with a puncture target area, and a foundation is laid for accurate puncture of the puncture needle body; the connecting assembly and the puncture assembly connected with the connecting assembly are pushed to move, so that the puncture needle body can slowly and stably puncture the affected part of pericardial effusion of a patient, and then effusion extraction operation is completed.

The present application provides a kind of real-time imaging pericardial puncture device, comprising: inner tube, outer tube, illumination light guide component and imaging component;Outer tube is set on the outside of inner tube, the distal end of inner tube has the puncture segment that protrudes relative to the distal end of outer tube, the end of puncture segment is formed with needle tip part;Inner tube, outer tube or both are jointly formed with: first installation slot for setting illumination light guide component at its nesting site;Second installation slot for setting imaging component;Illumination light guide component is used to conduct illumination light, so that it can illuminate target area;Imaging component is used to form the real image of target area;The distal end of illumination light guide component and imaging component is exposed to the distal end of inner tube, and towards the direction of needle tip part.This device is designed by the nested structure of inner tube and outer tube, combined with integrated illumination light guide component and imaging component, with real-time imaging function, can accurately guide puncture operation, with outstanding clinical application value and popularization prospect.

This document describes a catheter system for creating an opening in a pericardium. The catheter system includes a sheath defining a sheath lumen that includes a distal opening and a catheter sized to slidably fit within the sheath lumen so that the catheter extends through an entire length of the sheath lumen with a distal portion of the catheter extending beyond the distal opening of the sheath lumen and into a space underneath a pericardium of a patient. Additionally, the catheter system includes a blade movably mounted to the distal portion of the catheter to move from a retracted position to an actuated position. The blade remains fully within an outer housing of the catheter when the blade is in the retracted position. The blade extends outward from the catheter when the blade is in the actuated position so that the blade cuts the pericardium as the catheter withdraws.

The application belongs to the technical field of medical image processing, and particularly relates to a semi-supervised pericardial fat segmentation method based on multi-model cross teaching. First, a lightweight SAM model is used to extract ROI of pericardial fat tissue to obtain a rough ROI; the lightweight SAM model comprises an image encoder and a visual Transformer decoder, and an adapter layer is embedded in each Transformer block of the image encoder; the rough ROI is subjected to morphological processing to obtain a fine ROI; the fine ROI is mapped to an input image and cropped to obtain a fine ROI image; then, a segmentation model composed of an encoder, a bottleneck processing module and a decoder is built based on a TransUNet, the bottleneck processing module comprises an ASPP module and a plurality of WTS blocks; finally, the segmentation model, a UNeXt model and a Mamba-UNet model are subjected to semi-supervised training based on multi-model cross teaching, and the trained segmentation model is used for pericardial fat segmentation. The method can better capture edge and detail information of pericardial fat and improve segmentation precision.

Provided in the present application are a biomagnetic signal-based four-dimensional cardiac function imaging method and device. The method comprises: acquiring a cardiac magnetic signal of a subject to be tested and dynamic structure information of a target torso part within a full cardiac cycle, wherein the target torso part at least comprises two lungs, a torso, and a heart chamber and a pericardium structure thereof, and the dynamic structure information comprises a contour structure and a plurality of frames of dynamic images; performing spatial registration on the dynamic structure information and a sensor acquiring the cardiac magnetic signal to obtain coordinates of the sensor in a coordinate system of the dynamic structure information; calculating and reconstructing a cardiac electrical excitation activity based on the dynamic structure information, the coordinates of the sensor, and the cardiac magnetic signal to obtain a calculation and reconstruction result; and converting the calculation and reconstruction result into a four-dimensional visualization image.

A direct cardiac compression device includes a flexible outer layer configured to fit about at least a portion of a living heart and contains at least a first pericardial electrode facing outward therefrom. The pericardial electrode is configured to detect an electrocardiogram of the living heart. The device further includes at least one inflatable active chamber inside the flexible outer layer facing the living heart, and a port operably connected with the at least one inflatable active chamber and configured to facilitate inflation and deflation of the at least one active chamber by an actuator to cause periodic direct compression of the living heart. The actuator may be controlled to inflate and deflate the at least one active chamber using the electrocardiogram signal collected from the first pericardial electrode.

This invention relates to a method for assessing pericardial thickness. The method involves: acquiring a standard 12-lead electrocardiogram of the subject and calculating the frontal plane QRS-T angle; comparing the frontal plane QRS-T angle with a preset threshold of 108°; matching the corresponding assessment strategy based on the comparison result; and determining the pericardial thickness level of the subject based on the matched assessment strategy. The correlation coefficient between the assessed thickness and the actual pericardial thickness can reach 0.89-0.52, which is much higher than the 0.17 of traditional echocardiography and also better than the 0.27 of CT measurement, significantly improving the accuracy of the assessment.

The invention discloses a heart postoperative complication early warning system and method based on deep learning, and relates to the technical field of medical artificial intelligence, the system comprises a data acquisition module, a data preprocessing module, a feature extraction module, a feature fusion module, a complication prediction module and an early warning output module, the data acquisition module acquires electrocardiosignals, echocardiography images and vital sign data, the feature extraction module adopts a convolutional neural network to extract image space features and adopts a bidirectional long-short-term memory network to extract time sequence features, and the feature fusion module realizes multi-modal feature fusion through an attention mechanism. The complication prediction module predicts the occurrence probability of arrhythmia, low cardiac rejection syndrome, pericardial packing, postoperative infection and postoperative bleeding, the early warning output module carries out three-level early warning according to the probability value, continuous monitoring and early complication early warning on a cardiac postoperative patient are achieved, and the clinical nursing safety is improved.

A simulator apparatus for training medical professionals in the procedures of chest tube insertion and / or pericardiocentesis. The apparatus includes a first stand element and a second stand element that form a rib panel base with the two elements substantially at right angles to one another to create a 90-degree stand. A rib panel is removably joined to the two stand elements and includes curved slots representing the spaces between ribs. This allows for the insertion of chest tubes between the simulated rib spaces, using off-the-shelf supplies to create a subcutaneous and skin overlay. For training in pericardiocentesis, the rib panel can be placed on a standard dimension medical basin, which is filled with a training heart with a pericardial effusion created with off-the-shelf supplies. The basin is then filled with echogenic material (water, water and fiber supplement, or gelatin) that facilitates ultrasound.

The utility model discloses a minimally invasive cardiac surgery pericardium suspension device which comprises a shell, the interior of the shell is hollow, an avoiding hole is formed in the middle of the shell, an upper cover is arranged on the upper portion of the shell, a plurality of sets of retracting and releasing assemblies are arranged between the shell and the upper cover, and each set of retracting and releasing assembly is provided with a suspension rope in a matched mode. One end of the suspension rope is fixedly connected with the winding and unwinding assembly, and the other end of the suspension rope penetrates through the shell, extends into the avoiding hole and is fixedly connected with a working head; a plurality of groups of locking assemblies are arranged on the shell, and the locking assemblies are in one-to-one correspondence with the folding and unfolding assemblies; a doctor is allowed to adjust the extension length of the suspension rope as required through the arrangement of the retracting and releasing assembly, so that the suspension height and position of the pericardium are accurately controlled, and the clearness of the surgical field and the operation accuracy are ensured; due to the arrangement of the locking assembly, the operation stability is further enhanced, a doctor can adjust the tightness degree of the retracting and releasing assembly according to the operation process and requirements, and the stability of pericardium suspension is ensured.

The invention belongs to the technical field of medical instruments, and particularly relates to a cardiology department nursing hydropericardium drainage device which comprises a supporting seat, a containing cavity is formed in the supporting seat, a supporting shaft and a catheter are rotationally arranged in the containing cavity, a liquid guide roller is fixedly connected between the supporting shaft and the catheter, and the liquid guide roller is communicated with the catheter. And a flow guide pipe is fixedly connected to the liquid guide roller in a wound mode and communicates with the liquid guide roller, one end of the flow guide pipe fixedly communicates with a puncture needle, and a storage cylinder matched with the puncture needle is fixedly arranged on one side of the supporting base. By means of the device, effusion can be automatically extracted, the extraction speed is high, the stability and safety of effusion extraction are guaranteed, after effusion treatment is completed, a flow guide tube and a puncture needle can be stored in order, the situation that the flow guide tube and the puncture needle are placed disorderly and occupy space is avoided, and meanwhile the situation that medical workers touch the puncture needle by mistake and are stabbed can be avoided.