97 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.

A system and method for the installation and operation of a cardiac assist device. Flexible guides are advanced into a prepared space using minimally invasive techniques. A heart pump construct is advanced into position in the pericardial area along the flexible guides. Once in position, the heart pump construct is activated while still engaged with the flexible guides. The flexible guides provide structural integrity to the heart pump construct needed in order for the heart pump construct to function properly. The forces supplied to the heart by the heart pump construct are affected by the presence of the flexible guides. The structure of the flexible guides, the position of the flexible guides and the structure of the heart pump construct are customized to supply the forces needed by a particular heart in order to assist the heart in pumping more efficiently.

The invention discloses a pericardium adipose tissue segmentation method, device and equipment based on an MR image and a medium. The method comprises the following steps: acquiring a target heart magnetic resonance image containing pericardium adipose tissue of a target object; segmenting pericardium adipose tissue in the target heart magnetic resonance image based on a tissue segmentation model to obtain target pericardium adipose tissue of the target object; the tissue segmentation model comprises a three-branch cross-domain feature collaborative encoder, a double attention feature fusion module and a dynamic boundary perception decoder, and the three-branch cross-domain feature collaborative encoder performs feature extraction from global, local and frequency domains based on a three-branch structure; the double attention feature fusion module is established based on a space attention mechanism and a parallel channel attention mechanism, and the dynamic boundary perception decoder is used for enhancing the global and boundary perception capability. According to the scheme, the pericardium adipose tissue in the heart MR image can be accurately and efficiently segmented by using the tissue segmentation model based on multi-feature collaboration.

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 application belongs to the technical field of medical equipment, and particularly relates to a pericardium puncture liquid extraction device for a cardiology department, which comprises a mounting frame, the inside of the mounting frame is provided with an adjusting part, the inside of the adjusting part is provided with a puncture part, the inside of the adjusting part is further provided with an extraction part, the adjusting part can drive the puncture part and the extraction part inside to rotate in a horizontal direction and to adjust an angle in a vertical direction, the puncture part is inserted into a target position by extension, and the extraction part extracts target liquid after the puncture part punctures into the target position. The application realizes multidimensional control through an adjusting part motor + pneumatic, improves puncture precision through double orientation, guarantees safety through active locking + passive unlocking, quickly evacuates in an emergency, optimizes space through modular integration, and simplifies maintenance through quick assembly and disassembly.

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.

The present application relates to the technical field of medical apparatus and instruments, in particular to a pericardium thoracic cavity puncture and effusion drainage device, which comprises a needle tube, elastic strips, a cone and a deformation assembly, one end of the needle tube extends into the patient's body, the elastic strips are provided in plurality, the plurality of elastic strips are distributed at intervals around the axis of the needle tube, one end of each elastic strip is fixedly connected to the end of the needle tube in the patient's body, each elastic strip extends in the axial direction of the needle tube, the large end of the cone is fixedly connected to the end of each elastic strip away from the needle tube, and the middle part of each elastic strip can bend in the radial direction of the needle tube away from the axis of the needle tube; the deformation assembly is used for controlling the cone to move towards or away from the needle tube in the axial direction of the needle tube. Through the cooperation of the deformation assembly, the cone and the plurality of elastic strips, when the cone moves towards the needle tube, the middle part of the plurality of elastic strips bends in the radial direction of the needle tube away from the axis of the needle tube, and when the effusion is extracted, the needle tube is not easy to be blocked, and the liquid extraction process is more smooth.

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 an image segmentation method, device and equipment for pericardium adipose tissue and a medium. The method comprises the following steps: acquiring a heart magnetic resonance image of a target object, wherein the heart magnetic resonance image comprises pericardium adipose tissue; segmenting the pericardium adipose tissue in the heart magnetic resonance image by using a pre-trained tissue segmentation model to obtain a target pericardium adipose tissue of the target object; the tissue segmentation model comprises an encoder, a decoder and a space channel attention module, the encoder comprises a double-branch cooperation module, the decoder comprises a multilayer fusion convolution module, the double-branch cooperation module is used for feature extraction based on a double-branch network, and the space channel attention module is used for feature enhancement in space and channel dimensions. And the multi-layer fusion convolution module is used for feature fusion based on grouped convolution. According to the scheme, semantic information and structural features in the image can be fully mined by using the tissue segmentation model, the segmentation performance in a complex scene is improved, and the pericardium adipose tissue is efficiently and accurately segmented.

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 invention relates to a method for reducing biological heart valve prosthesis calcification by adopting a titanium-containing coating in combination with ultraviolet irradiation. The invention relates to a method for treating a biological heart valve prosthesis with a titanium-containing coating, in particular a glutaraldehyde-immobilized pericardium, comprising the following steps: a) treating a biological heart valve prosthesis with a titanium-containing coating; and b) irradiating the treated biological heart valve prosthesis with light having a wavelength of 100 to 450 nm. In this way, the biological heart valve prosthesis with the uniform surface can be manufactured through the hypothesized polymer, and therefore the biological heart valve prosthesis with the uniform surface can be manufactured through the hypothesized polymer. Calcification of such a TAVI valve is significantly reduced, the life of the TAVI valve is increased, which increases the time interval at which such a TAVI valve must be replaced over the years.

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 invention belongs to the technical field of drainage devices, and discloses a pericardial effusion drainage device which comprises an extracorporeal membrane lung oxygenation therapeutic apparatus and a fixing device. The extracorporeal membrane lung oxygenation therapeutic apparatus comprises a main control table, an artificial membrane lung, a centrifugal pump and an oxygenator, an inlet and an outlet of the centrifugal pump are connected with a first catheter and a second catheter respectively, the first catheter is connected with veins of a patient, the free end of the second catheter is connected with the artificial membrane lung, the artificial membrane lung is connected with a third catheter, and the third catheter is connected with the oxygenator. The free end of the third catheter is connected with the artery or vein of the patient; a branch tube of the first catheter is connected with a hydrops catheter, the free end of the hydrops catheter is connected with a drainage tube, and the diameter of the hydrops catheter is smaller than that of the drainage tube. The technical problems that according to an existing drainage mode, effusion cannot be continuously drained, the drainage efficiency is low, the postoperative anemia risk can be increased for a patient with blood loss due to an operation, and the recovery cycle of the patient is prolonged are solved.

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.

The present application relates to the biomedical technology field, especially to a kind of decellularized pig pericardium and POSS-PEG-CHO cross-linked biological nanocomposite material and its preparation method and application.The present application is based on Schiff base reaction, and the star-shaped eight-arm eight-functionalized POSS-based benzaldehyde end-capped polyethylene glycol is used to cross-link the decellularized pig pericardium, and the POSS-PEG-PP biological nanocomposite material is successfully prepared.Compared with GLUT-PP, the POSS-PEG-PP provided by the present application presents more compact fiber arrangement, and the mechanical property is also better.In vitro experiment shows that POSS-PEG-PP has excellent cell compatibility, endothelialization capacity and blood compatibility.In vivo evaluation further confirms that the material has significant anti-inflammatory and anti-calcification properties.Through RNA sequencing analysis of subcutaneous implant, it is found that the changes of AMPK and IL-17 signal pathways play an important role in the process of POSS-PEG-PP regulating inflammation and immune response.Therefore, POSS-PEG-PP shows good application prospect in the field of biological heart valve, and is expected to become a very potential alternative material.

The present invention relates to the field of medical material technology, and in particular to a drug-loaded artificial pericardium and a preparation method thereof. The drug-loaded artificial pericardium provided by the invention can be used to reduce adhesion between the heart and surrounding tissues and reduce postoperative inflammatory reactions and fibrosis after cardiac surgery, and has good biosafety; in addition, according to drug concentration detection, it is proved that the film has the effect of sustained drug release, and can maintain a relative drug concentration for a period of time after surgery, reducing inflammatory reactions and fibrosis. The film of the present invention also has good water reactivity and biodegradability. After being moistened, it can rely on intermolecular forces to completely adhere to cardiac tissue, and does not rely on viscosity to adhere to the heart, avoiding secondary damage to the tissue caused by tearing again, and can be completely degraded within a certain period of time after being implanted in a living body. In addition, compared with traditional anti-adhesion flushing solutions, this film can be cut as needed and attached to the required part to avoid the impact of excessive flushing on other tissues.

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 invention relates to a method to reduce the calcification of a biological heart valve prosthesis by a titanium containing coating in combination with UV irradiation. The method for treating the biological heart valve prosthesis with a titanium containing coating, particularly a glutaraldehyde-fixed pericardium, comprising the steps of: a) treating the biological heart valve prosthesis with a titanium containing coating; and b) irradiating the treated biological heart valve prosthesis with light of a wavelength between 100 nm and 450 nm. This results in a biological heart valve prosthesis by a hypothesized polymerization with a homogenous surface.

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. For simulation of the pericardiocentesis procedure, in an embodiment, a heart component located within the simulator allows the user to simulate insertion of chest tubes between the simulated rib spaces into or around the heart. The model may also use a subcutaneous and skin overlay for human skin simulation.

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.