18 results about "Mediastinum" patented technology

The invention belongs to the technical field of endoscopic surgical instruments, and provides a foreign matter taking device under an endoscope. The device comprises a shearing mechanism and a clamping mechanism, the shearing mechanism is parallel to the clamping mechanism, a pulling-out mechanism is arranged between the shearing mechanism and the clamping mechanism, the two ends of the pulling-out mechanism are connected with the shearing mechanism and the clamping mechanism respectively, the pulling-out mechanism comprises a first elastic body and a limiting column, and the limiting column is a column body with a protruding part on the side face; one end of the limiting column is fixed to the shearing mechanism, the other end of the limiting column makes contact with the limiting hole, the pulling-out mechanism further comprises a connecting column provided with threads, the connecting column is provided with a limiting block, and the clamping mechanism is provided with a first limiting hole matched with the section of the limiting column and a second limiting hole matched with the limiting block of the connecting column. Foreign matters penetrating the septum and the like can be pulled out perpendicular to the shearing plane, and secondary injury to a patient caused by force towards the mouth side is avoided; and the clamping part is subjected to special structural design, so that different types of foreign matters can be clamped.

The present application discloses an image processing method, a model training method, an apparatus, and an electronic device. The method includes: partitioning a mediastinal region of a pulmonary medical image to obtain at least two mediastinal partition images, where different mediastinal partition images include different anatomical structures of the mediastinal region; according to the at least two mediastinal partition images, through at least two branch networks in a neural network model, performing lesion detection on different anatomical structures to obtain a lesion detection result of the mediastinal region of the pulmonary medical image, where one branch network is at least used to detect mediastinal lesions in the anatomical structure of one mediastinal partition image. One branch network is at least used to detect lesions in the anatomical structure of one mediastinal partition image, that is to say, different branch networks are used for lesion detection of different mediastinal partition images to achieve the best lesion detection performance, thereby improving the accuracy of mediastinal lesion detection.

A cardiac pacing system that includes an implantable pulse generator and electrical leads that include a lead body portion having a distal end and a proximal end, a connector configured to electrically connect the proximal end of the lead body to the pulse generator, and at least one electrode disposed at the distal end of the lead body for delivering electrical stimulation to a patient's heart, wherein the distal end of the lead body is configured to terminate within the mediastinum of the thoracic cavity of the patient, proximate to the heart.

The utility model provides a pericardium mediastinum double-cavity drainage tube used after a cardiac surgery. The pericardium mediastinum double-cavity drainage tube comprises a flexible plastic straight tube and a flexible plastic inclined tube, the flexible plastic straight pipe is of a double-cavity structure, an eccentric hole cavity is formed in a cavity penetrating through the flexible plastic straight pipe, the cavity is not communicated with the interior of the eccentric hole cavity, and the eccentric hole cavity extends to a side wall opening of the flexible plastic straight pipe from the first end of the flexible plastic straight pipe. The flexible plastic inclined pipe is connected with the flexible plastic straight pipe through the side wall opening.

The invention relates to a biopsy device and method for transvascular puncture, and belongs to the technical field of minimally invasive biopsy. Comprising a catheter body provided with a puncture section, and an end hole and a side hole are formed in one end of the puncture section; the puncture assembly is arranged in the catheter body in a sliding mode, and the puncture assembly conducts puncture sampling through the end hole or the side hole; the first balloon is positioned on one side, far away from the end hole, of the puncture section; the second balloon is located on the side, close to the end hole, of the puncture section, and the second balloon is distributed relative to the side hole. The device is used for solving the technical problem that in the prior art, safety and sampling sufficiency are difficult to consider in focuses close to the periphery of pulmonary vessels or with clear blood supply vessels, pulmonary porta and mediastinal septum.

1. The name of the design product: chest drainage monitoring device. 2. The use of the design product: the design product is used for the drainage and monitoring of the pleural cavity and mediastinal cavity after the patient has undergone heart or chest surgery, or for chest injury, pleural effusion, pleural empyema or other conditions. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 2.

The invention provides a specimen for displaying a medial membrane structure and a preparation method and application thereof, and belongs to the technical field of medical tissue specimen preparation. The method comprises the following steps: fixing a fresh tissue block in a mediastinal region in a stationary liquid, washing with water, and dehydrating to obtain a dehydrated tissue block; carrying out photopolymerization curing on the dehydrated tissue block to obtain an embedded specimen; adhering the embedded specimen to a glass slide A by adopting an adhesive, and then positioning and polishing the embedded specimen; adhering a glass slide B to the polished surface of the embedded specimen by using an adhesive to obtain an original specimen; and cutting, grinding, polishing and dyeing the original specimen to obtain the specimen showing the longitudinal partition film structure. According to the longitudinal septum membrane hardening specimen prepared by the invention, anatomical characteristics constructed by membrane structure fibers are relatively comprehensively displayed in a large-scale region with compact tissue gaps, and the bottleneck problem which puzzles the research of a membrane structure in a longitudinal septum region for a long time can be solved.

The present invention belongs to the technical field of first aid auxiliary equipment, and discloses a multifunctional negative pressure fixing device, which includes a support frame and a sealing airbag. A sealing plate is covered on the support frame, a sliding hole is formed in the sealing plate, a push handle is arranged in the sliding hole, a baffle is arranged on the push handle, an air inlet pipe is penetrated through the push handle, an extrusion airbag located in the support frame is communicated with the air inlet pipe, the extrusion airbag is slidably connected with the sealing plate, a second hose is connected between the extrusion airbag and the sealing airbag, a first hose is communicated with the air inlet pipe, an air inlet adjusting mechanism is arranged on the first hose, and the air inlet adjusting mechanism is used to supply air to or suck air from the first hose. A pipeline switching mechanism is also arranged on the push handle. The present invention solves the problems that the existing pre-hospital first aid technologies and means cannot solve the mediastinal swing caused by flail chest, which prompts hemodynamic instability, and the lung tissue collapse caused by open hemothorax / pneumothorax, and can simultaneously realize the functions of positive pressure fixation and negative pressure drainage.

The invention discloses an intelligent positioning and segmentation method for an mediastinal lymph node area based on a CT image, and belongs to the technical field of computer vision and deep learning. According to the method, a space-texture double-flow encoder is introduced, a global structure and local detail features of a mediastinal region are fully extracted, and the perception ability of a model to lymph nodes and surrounding tissues thereof is enhanced; a position perception fusion module is introduced, global and local information of the image is fully utilized, and the accuracy of boundary segmentation is improved; a category perception auto-encoder is introduced, and the loss weights of different categories of lymph nodes are dynamically adjusted by calculating the difference between a prediction mask and a real mask in a potential space, so that the model pays more attention to categories which are difficult to segment, and the problem of category imbalance is relieved. According to the method, the mediastinal lymph node area in the CT image can be efficiently and accurately segmented, the problems of low segmentation speed, low precision, large precision difference of different types and the like of a traditional method are solved, and a more efficient solution is provided for medical image analysis and disease diagnosis.

The present invention discloses a lung field image segmentation method, device, and storage medium. The method comprises: determining the gradient amplitude of a preprocessed chest image and integrating the gradient amplitude; determining a chest image based on the integration result, and segmenting the chest image into a left chest image and a right chest image based on a left lung segmentation point and a right lung segmentation point; performing costal margin segmentation, lung apex segmentation, and transverse and mediastinum segmentation on the left chest image and the right chest image, respectively, to obtain left and right costal margin segmentation images, left and right lung apex segmentation images, and left and right transverse and mediastinum segmentation images; determining lung apex region boundaries, transverse mediastinum region boundaries, and costal margin region boundaries based on the left and right costal margin segmentation images, the left and right lung apex segmentation images, and the left and right transverse and mediastinum segmentation images, and connecting the lung apex region boundaries, transverse mediastinum region boundaries, and costal margin region boundaries to obtain a lung field image. The present invention segments and connects the costal margin, lung apex, and transverse mediastinum regions of the chest, thereby improving segmentation accuracy.

The invention belongs to the technical field of medical instruments, and particularly relates to a mediastinal puncture device for thoracic surgery, which comprises a shell, a puncture needle and a sampling needle, a through groove is formed in the tube wall of the puncture needle, the sampling needle is inserted into the shell in a sliding manner and is positioned in the puncture needle, four sampling grooves are formed in the end part of the sampling needle in the circumferential direction, and the sampling grooves are communicated with the through groove. Different sampling grooves can be aligned with the through grooves in the puncture needle by rotating the sampling needle, and continuous sampling is realized by controlling the puncture depth; the needle head assembly is inserted into the end part of the puncture needle in a sliding manner; the warning assembly comprises a sensing part, a triggering part and an alarm part which are arranged in the shell, and an adjusting part arranged on the shell. According to the invention, concession and early warning can be realized, single-time puncture multi-point sampling can be realized, different tissue environments can be flexibly adapted, and the safety and diagnosis accuracy of mediastinal puncture can be remarkably improved.

The invention relates to the technical field of medical instruments, in particular to a cardiovascular pace-making and breathing collaborative emergency device which comprises a cardiac compression device, a ventilator and a controller, and the cardiac compression device and the ventilator are connected with the controller; the controller controls the cardiac compression device and the ventilator to work cooperatively, mechanical compression acts on the upper side of the heart by compressing the chest and compresses the heart together with the two lungs, blood in the heart enters blood vessels, the heart naturally relaxes after completion, and the heart can be compressed by a lower first positive pressure pulse and a shallower mechanical compression depth. Efficient cardio-pulmonary resuscitation is achieved, the risk of internal hemorrhage caused by the fact that the liver or the spleen is punctured by the rib broken end is greatly reduced, the risk that alveolar rupture is caused by high pressure, and gas enters the thoracic cavity or the mediastinal septum is greatly reduced, and the risk and degree of injury of a patient in the first-aid process are reduced.

The invention discloses a magnetic sternum traction device and relates to medical instruments, flexible magnetic traction is adopted to replace mechanical violent distraction, rib fracture and skin pressure sores are avoided, pressure is evenly dispersed through a magnetic attraction piece, and the magnetic sternum traction device is particularly suitable for weak areas such as sternum incisions. The operation can be completed by a small incision under the xiphoid process, the upper mediastinum structure can be exposed without a sternum angle auxiliary incision, trauma and infection risks are reduced, and meanwhile, the situation that instruments interfere with thoracoscope operation is avoided; the magnetic field remarkably relieves postoperative pain, accelerates extravasated blood absorption and improves respiratory function recovery experience of a patient by inhibiting pain conduction and promoting blood circulation, the device ensures the exposure stability of the surgical field, the quick adhesion design of the magnetic suction sheet simplifies the process, and the emergency surgical treatment efficiency is improved.

The present application belongs to the technical field of endoscopic surgical instruments, and provides a device for taking foreign matter under endoscopy. The device comprises a shearing mechanism and a clamping mechanism, the shearing mechanism and the clamping mechanism are parallel, a pulling mechanism is arranged between the shearing mechanism and the clamping mechanism, two ends of the pulling mechanism are connected with the shearing mechanism and the clamping mechanism respectively, the pulling mechanism comprises a first elastic body and a limiting column, the limiting column is a column body with a protruding portion arranged on a side surface; one end of the limiting column is fixed with the shearing mechanism, the other end of the limiting column is in contact with a limiting hole, the pulling mechanism further comprises a connecting column with a thread, the connecting column is provided with a limiting block, the clamping mechanism is provided with a first limiting hole matched with a cross section of the limiting column and a second limiting hole matched with the limiting block of the connecting column. The device can pull out foreign matter, such as foreign matter penetrating into mediastinum, perpendicularly to a shearing plane, so as to avoid secondary injury to a patient caused by force to the oral side; the clamping part is specially structured, so that different foreign matter types can be clamped.

This invention relates to the field of medical devices and discloses a fiber optic sensing-based early warning device and method for thrombosis in the lumen of a hemodialysis catheter. The fiber optic sensing-based early warning device for thrombosis in the lumen of a hemodialysis catheter includes a catheter body, a fiber optic sensing component, a data transmission module, a signal processing module, and an early warning module. The catheter body has an arterial lumen, a venous lumen, and a central mediastinum located between the arterial and venous lumen. This invention, by at least partially disposing the fiber optic sensing component within the central mediastinum of the hemodialysis catheter, makes the central mediastinum both a separating structure between the arterial and venous lumen and a structural carrier for converting venous pressure changes into fiber optic strain signals. The central mediastinum can generate corresponding micro-strains, which are sensed by the fiber optic sensing component, enabling continuous monitoring of the thrombosis formation trend within the hemodialysis catheter lumen.

The invention belongs to the technical field of medical instruments, and particularly relates to a thoracoscope septum distraction device which comprises a main body, the main body is connected with an endoscope tube and an observation tube, and the main body is externally communicated with an access tube; the opening part comprises a supporting rod, the supporting rod is connected with a rotating disc, and the rotating disc is provided with a traction rope A and a traction rope B; the driving part comprises a limiting pipe, and a sliding plate is connected into the limiting pipe; the connecting part comprises a plurality of sets of sliding blocks, the two sides of each sliding block are connected with the traction rope A and the traction rope B respectively, inner cavities of the sliding blocks are connected with inserting blocks in a sliding mode, the inserting blocks stretch out of the sliding blocks and are connected with the sliding plate, and locking plates are arranged in the inner cavities of the sliding blocks. When endoscopic observation and treatment operation of the mediastinal septum are carried out, the endoscope can stretch into the mediastinal septum through the access pipe, the operation process is reduced, multiple sets of supporting rods can be synchronously driven or a single supporting rod can be controlled to carry out distraction operation according to requirements, distraction angle and requirement diversification is achieved, and harm to a patient is reduced.

The present disclosure relates to a lung segmentation, lung disease evaluation method and device, electronic equipment and storage medium, and relates to the technical field of DR lung image segmentation. The segmentation method comprises: acquiring a segmentation model of a preset convolutional neural network, a DR lung region label image used for training the segmentation model, and a plurality of DR lung images to be segmented at multiple moments in a breathing process or a breath-holding state; wherein the method for determining the DR lung region label image used for training the segmentation model comprises: respectively performing rib edge boundary, lung apex boundary, and mediastinum and diaphragm edge detection on left chest images and right chest images of the plurality of DR lung region images to obtain the DR lung region label image; training the segmentation model by using the DR lung region label image; and completing left lung and / or right lung segmentation of the plurality of DR lung images to be segmented based on the trained segmentation model. Lung region segmentation and lung disease evaluation of DR lung images can be realized.

The invention belongs to the technical field of medical equipment, and particularly relates to an anterior mediastinal surgery three-dimensional imaging device based on a structured light binocular camera, the anterior mediastinal surgery three-dimensional imaging device comprises an operation handle, an extension rod is rotatably mounted on the operation handle, an imaging head is rotatably mounted at the end of the extension rod, and the end face of the extension rod and the end face of the imaging head are obliquely arranged; the imaging mechanism is arranged on the imaging head, the imaging mechanism comprises two cameras which are installed on the imaging head in a sliding mode, and the two cameras are symmetrically arranged; the anti-fog mechanism is arranged on the imaging head, the anti-fog mechanism comprises a circulating pipe fixedly connected to the imaging head, and the circulating pipe is located on the outer side of the camera and used for adjusting the temperature of the camera. According to the invention, the distance between two eyes can be adjusted through the sliding camera, and the rotation angle of imaging of the camera and the orientation direction of the camera can be adjusted through the rotating extension rod and the imaging head.