199 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.

The invention 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. The method comprises the following steps: firstly, carrying out ROI extraction on pericardial adipose tissue by using a lightweight SAM model to obtain a rough ROI; the lightweight SAM model comprises an image encoder and a visual Transform decoder, and an adapter layer is embedded in each Transform block of the image encoder; performing morphological processing on the rough ROI to obtain a fine ROI; mapping the fine ROI to an input image and cutting the fine ROI 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 TransUNet, and the bottleneck processing module comprises an ASPP module and a plurality of WTS blocks; and finally, performing semi-supervised training on the segmentation model, the UNeXt model and the Mamb-UNet model based on multi-model cross teaching, and applying the trained segmentation model to pericardial fat segmentation. According to the method, the edge and detail information of pericardial fat can be better captured, and the segmentation precision is improved.

The percutaneous pericardium puncture assembly comprises a puncture tube and a puncture piece, and the puncture tube comprises a tube body and a puncture section arranged at the far end of the tube body. A puncture channel, a negative pressure suction channel and an imaging channel are formed in the tube body and communicated with a working opening in the far end of the puncture section. The imaging module is arranged in the imaging channel in a penetrating mode, and real-time visualization of in-vivo puncture operation is achieved. The near end of the negative pressure suction channel can be in butt joint with a negative pressure suction device to provide negative pressure for the working port so as to adsorb the pericardium wall layer; the puncture piece penetrates through the puncture channel and can puncture the adsorbed pericardium wall layer. According to the embodiment, the vacuum suction channel is formed, the pericardium wall layer can be captured before puncture of the puncture piece, in this way, even if only a small amount of pericardial effusion exists between the pericardium wall layer and the pericardium dirty layer, medical staff can easily complete puncture of the pericardium wall layer under the condition that the pericardium dirty layer is not damaged, and the puncture efficiency of the pericardium wall layer is improved. The operation is simple, and the safety and the success rate of percutaneous pericardium paracentesis under full indications are greatly improved.

A medical device includes a flexible catheter including a distal end, at least one lumen, and a longitudinal axis, an incision device coupled to the distal end of the catheter, and a distal tip coupled to and projecting from the incision assembly. The incision device comprises a wire that includes one or more electrodes for creating an incision through a pericardium. The wire has a first end fixed to an external surface of the distal tip and a second end extending through the distal opening of the distal tip. The wire is structured such that in a deployed configuration, (i) the portion of the wire extending from the first end of the wire to the distal opening of the body of the distal tip forms a shape comprising a protrusion extending relative to a longitudinal axis of the transcatheter and (ii) the electrode is positioned proximal to the protrusion.

The invention belongs to the technical field of medical puncture equipment, and particularly relates to a cardiology department clinical puncture device which comprises a supporting plate and further comprises an automatic puncture mechanism, a hanging and placing mechanism, a positioning and locking mechanism, a puncture resistance real-time monitoring and feedback mechanism, a hydrops extraction power supply mechanism and a PLC control panel. A stable positioning position can be provided according to the puncture requirement, the smoothness in the puncture process is ensured, the puncture angle can be rapidly adjusted according to the requirement, the puncture speed can be automatically adjusted based on different resistances in the puncture process, the larger the puncture resistance is, the slower the puncture speed is, the effusion extraction efficiency is effectively improved, and the puncture cost is reduced. More medical labor is released, continuous and stable operation of pericardial effusion extraction work is ensured, time for puncture effusion extraction is shortened, and the problem that pain and infection risk of a patient are increased due to overlong-time operation is solved.

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 pericardiocentesis positioning device for the cardiology department and a using method of the pericardiocentesis positioning device, and relates to the technical field of cardiology department medical instruments. Comprising an adsorption plate, a sliding frame and a positioning pipe, a fixed base and an adjusting disc are fixedly arranged at the top of the adsorption plate, and a fixed shaft is fixedly arranged between the inner walls of the fixed base. The limiting plate is pulled outwards to be separated from the surface of the adjusting disc, the supporting base is rotated immediately, and due to the fact that the fixing plate is fixed to the outer wall of the side, close to the adjusting disc, of the supporting base, the fixing plate can synchronously rotate in the first adjusting groove along with the supporting base; an operator can accurately adjust the supporting base to a required angle by observing a first scale mark on the outer wall of the side, away from the supporting base, of the adjusting disc, after the supporting base is adjusted to a proper angle, the limiting plate is loosened, the limiting plate is reset under the elastic effect of the compression spring to be attached to the surface of the adjusting disc again, and the stability of the supporting base is guaranteed; therefore, physical conditions of different patients and specific requirements of pericardiocentesis can be met.

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 invention discloses a preparation method of a drug-loaded glycoprotein-like network hybridization tissue engineering valve material, which comprises the following steps: carrying out a one-pot hybridization cross-linking reaction on a decellularized biological material, oxidized hyaluronic acid, phenylboronic acid grafted silk fibroin and curcumin to construct and form a drug-loaded glycoprotein-like network on the biological material; the biological material is animal tissue, including but not limited to any one of pericardium, valve, intestinal membrane, meninx and the like. The method comprises the following steps: soaking a decellularized biological material in a solution A containing OHA, SF-PBA and curcumin, and continuously oscillating for 48 hours to carry out a cross-linking reaction; and then washing with phosphate buffer saline water and distilled water to obtain the drug-loaded glycoprotein-like network hybrid tissue engineering valve material. The prepared tissue engineering valve material overcomes the defects that traditional decellularized valve and glutaraldehyde cross-linked valve materials are easy to calcify, have toxicity and are poor in immunogenicity.

Disclosed is a medical device comprising an incision assembly coupled to a catheter and an incision opening defined along the incision assembly. A retractable cutting apparatus is disposed within the incision opening and comprises a first incision member comprising at least one first cutting surface and defining a first member proximal end rotatably fixed proximate to a distal end of the incision opening and the at least one cutting surface is located on a bottom edge of the first incision member. A second incision member comprises at least one second cutting surface and defines a second member distal end attached to the first incision member at a connection point between a first member distal end and the first member proximal end of the first incision member, and wherein the at least one second cutting surface is located on a bottom edge of the second incision member.

A computer-implemented method (100) of identification regions of ischemia areas in the left ventricle, the method comprising: receiving (105) a CT Coronary Angiogram scan data representing a 3D volume of a region of anatomy that includes a pericardium; segmenting (110) the CT scan data to obtain a cardiac anatomical model; applying (110) a cardiac anatomical model to a machine-learning algorithm to identify a region of ischemia, while the machine-learning model is trained on a data sets comprising a spatially aligned CT and perfusion data.

The invention relates to the field of new biological materials, in particular to a high-packaging-dose antibacterial slow-release biological patch obtained by packaging at least two antibiotics with an acellular matrix material. The acellular matrix material is derived from any two of small intestinal submucosa, peritoneum, dermis, bladder basement membrane and pericardium; the antibiotics comprise hydrophobic antibiotics and hydrophilic antibiotics, and the hydrophobic antibiotics are selected from one or more of Beta-lactam antibiotics, rifamycin and macrolide antibiotics; the hydrophilic antibiotics are tetracycline antibiotics. The coating-free drug-loaded sustained-release system based on a lamination process kills bacteria in a short period, prevents colonization and reproduction of bacteria in a wound / patch, realizes synergistic and continuous release of antibiotics along with a wound healing process, guides tissue regeneration and synchronously realizes degradation, is applied to a high-incidence infection period of a surgical operation, reduces adhesion, and has a good application prospect. The abdominal wall strength is enhanced, and the growth of wound granulation tissues is promoted.

The invention provides a pericardiocentesis guide wire suite which comprises a pericardiocentesis guide wire, the pericardiocentesis guide wire comprises an elastically deformable head, and the head is provided with a head body and a needle tip deflecting relative to the head body; according to the extension degree of the head in the catheter, the head can be respectively deformed into a transmission form, a breakthrough form and a complete bending form; in the conveying state, the head can be conveyed through the catheter, the head is completely unfolded in the catheter or only the needle tip is exposed at the far end of the catheter, and the far end of the catheter is used for abutting against the outer wall of the pericardium; in the breakthrough form, a part of the head extends out of the far end of the catheter, so that the needle point penetrates into the inner pericardial wall from the outer pericardial wall to be located between the inner pericardial wall and the myocardium, and the structure, deflecting relative to the head body, of the needle point is configured to enable the needle point to deflect away from the inner pericardial wall; in the fully curved configuration, the head completely extends from the distal end of the catheter and returns to the curved configuration, and the shape of the head is configured such that the needle tip is surrounded by the head body.

The invention discloses an edge-enhanced left atrial appendage medical image segmentation method and system and a storage medium, and the method comprises the steps: constructing a convolutional neural network model of a U-shaped coding structure based on an attention mechanism and a weight loss function, and recording the model as EMCLUNet + +; the medical image segmentation model (EMCLUNet + +) based on edge enhancement adopts an improved UNet + + as a backbone network, and comprises a convolution encoder module, a decoder part, a multi-scale attention module EMSA and an efficient attention mechanism module Clotion. And transmitting a medical image to be segmented into the trained convolutional neural network model to obtain a segmentation result. According to the method, redundant information interference is reduced and the accuracy of boundary information is improved by utilizing a channel and a space attention mechanism. For conditions (such as pericardial effusion or pleural effusion of a patient) with complications, the robustness to complex backgrounds and noise is enhanced by the multi-scale feature fusion and lightweight module, and a high-quality segmentation result is ensured.

The invention discloses an implantable acellular matrix material and a preparation method thereof, and belongs to the field of biomedical materials. According to the method, natural animal tissues (such as pericardium, achilles tendon or small intestine submucosa) are used as raw materials, a low-temperature chemical combined decellularization treatment technology is adopted, and the method comprises the multi-step synergistic process of pre-cooling soaking balancing, low-temperature enzymolysis, low-concentration surfactant gradient permeation cleaning, low-temperature nuclease degradation, non-crosslinking sterilization and the like. Under the condition that the treatment temperature is strictly kept at 0-8 DEG C, cell components and genetic materials (the residual DNA content is 1t, and the dry weight is 8 ng / mg) are efficiently removed, and meanwhile the natural three-dimensional fine structure of an extracellular matrix (ECM), the integrity of collagen fibrils and key bioactive components (such as glycosaminoglycans (GAGs)) are reserved to the maximum extent. The host immunological rejection reaction of the obtained material is remarkably reduced, host cell ingrowth, vascularization and tissue function reconstruction can be effectively promoted after implantation, and the material is suitable for high-end implantation scenes such as soft tissue repair and regenerative medical stents.

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 invention discloses an intracardiac puncture positioning device, and relates to the field of medical cardiovascular devices, the intracardiac puncture positioning device comprises a position adjusting plate, the inner wall of the position adjusting plate is slidably connected with a height adjusting plate, the inner wall of the height adjusting plate is slidably connected with a sleeve, the inner wall of the sleeve is slidably connected with a sliding rod, and one side of the sliding rod is provided with a needle cylinder; a needle head is installed at the bottom end of the needle cylinder, the inner wall of the position adjusting plate is rotationally connected with an adjusting needle inserting mechanism, the adjusting needle inserting mechanism comprises a first lead screw rotationally connected to the inner wall of the position adjusting plate, and a first threaded hole is formed in the surface of the height adjusting plate; the surface of the first lead screw is in threaded connection with the inner wall of the first threaded hole. The needle cylinder and the needle head are arranged to carry out needling operation of pericardium puncture, the first lead screw is arranged to adjust the position of the height adjusting plate, the second lead screw is arranged to adjust the height of the sleeve, and the sleeve is arranged to support and adjust the sliding rod.

This document relates to devices and methods for the treatment of heart conditions. For example, this document provides devices and methods for treating heart failure with preserved ejection fraction, including diastolic heart failure, by performing a pericardial modification procedure.

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.

A method and apparatus for an elongated introducer assembly and an elongated guidewire assembly are disclosed. The elongate introducer assembly is manipulated and positioned proximate the first biological wall. The elongate guidewire assembly is selectively manipulated along the elongate introducer assembly and includes a distal tip, a distal portion, and an elongate shaft section. The distal portion further includes a flexible pre-set spatial geometry including a distal length and a distal deflection portion. The distal tip is for puncturing a first biological wall, and the distal deflection portion directs the distal length away from a second biological wall positioned proximate the first biological wall.

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 utility model provides a pericardiocentesis effusion extraction device, and relates to the technical field of medical auxiliary instruments. A traction pump is arranged above the collecting barrel, an insertion pipe is fixedly connected to the rear end of the traction pump, the rear end of the insertion pipe is fixedly connected with the interior of the front end of the leading-in pipe in an inserted mode, and a triangular frame A is fixedly installed in the insertion pipe. After the intubation tube is separated from the introduction tube, the spring piece A and the spring piece B are both elastically reset, the limiting plug A and the limiting plug B are attached to the rear end of the interior of the intubation tube and the front end of the interior of the introduction tube respectively, and effusion is prevented from flowing out. The problems that when an existing effusion extraction container is used for extracting effusion, after the extracted effusion container contains proper quantitative effusion, the extracted effusion container needs to be replaced with other containers, the effusion is prone to being poured and scattered in the replacement process, and secondary injury is prone to being caused to a patient when a pipeline in the body of the patient is removed are solved.

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.

A pericardial anchor for positioning a cardiac assist system over a heart of a patient underneath a sternum and ribs of the patient includes a tubular shaft, a pericardial anchor, and a removable handle. The tubular shaft has a guidewire lumen therethrough. A pericardial anchor is positioned at a distal end of the tubular shaft and a removable handle is positioned at a proximal end of the tubular shaft. The pericardial anchor is typically a spiral anchor that can be implanted to anchor in the pericardium of the patient by rotation of the handle. After the handle is removed, the tubular shaft receives and anchors the cardiac assist system over the heart of the patient located beneath the sternum and ribs of the patient.

The present invention relates to devices and methods for separating tissue to create an anatomical access space in vivo, particularly for providing access to the space between the pericardium and the epicardium.