39 results about "Resective surgery" patented technology

The invention relates to a hypertrophic obstructive cardiomyopathy virtual resection operation curative effect evaluation method based on individualized computational fluid mechanics, which can give visual postoperative hemodynamic indexes, predict postoperative curative effects, find an optimal resection scheme and realize preoperative accurate intelligent evaluation. Comprising the following steps of: acquiring coronary artery enhanced computed tomography image data, acquiring a coronary artery enhanced computed tomography image of a patient, and outputting and storing the coronary artery enhanced computed tomography image in a DICOM (Digital Imaging and Communications in Medicine) format; preprocessing image data, and segmenting and reconstructing a left ventricle-outflow tract structure three-dimensional model; setting a virtual excision scheme at the fleshy part; constructing a surgical resection model, and importing the model into finite element analysis software for solving; and the virtual postoperative curative effect is visualized. Verification and curative effect prediction of a patient excision scheme can be realized, and the operation success rate of a hypertrophic obstructive cardiomyopathy patient is improved.

The invention relates to a computer-implemented method of liver resection surgery planning, comprising the steps of: processing (E2) preoperative computed tomographic images (10) of a patient to generate liver, liver lesion (ss) and venous vessels segmentations; pruning the venous vessels segmentation to retain only major vessels and determining (E3) a primary hepatic zone (PHZ) from the retained major vessels; determining (E4) at least one quantitative feature from the primary hepatic zone, the liver segmentation and the liver lesion(s) segmentation; processing (E5) the determined quantitative features with a classification model to determine a liver resection complexity score for the patient.

The invention relates to a multi-view fusion cervical cancer precancerous lesion image classification method based on self-supervised learning, and the method comprises the steps: collecting video screenshot data of a prostate endoscopic resection operation, and carrying out the preprocessing, and obtaining an optimized model weight; a second visual Transform model and a third visual Transform model which are optimized are obtained, and the second visual Transform model and the third visual Transform model which are optimized are obtained; and carrying out weighted fusion on the classification result of the colposcope acetic acid picture of the precancerous lesion and the classification result of the colposcope iodine picture of the precancerous lesion to obtain a final classification result. According to the method, a self-supervised learning method is introduced, and a large amount of label-free medical picture data is utilized, so that the generalization ability and classification accuracy of a ViT model, namely a visual Transform model, in cervical cancer precancerous lesion classification are improved; according to the method, efficient auxiliary diagnosis of CIN grading is achieved, especially in areas with limited medical resources, an efficient and low-cost solution is provided for automatic screening, doctors are helped to improve the diagnosis accuracy, the missed diagnosis rate is reduced, and important technical support is provided for early cervical cancer prevention.

The utility model relates to the technical field of auxiliary equipment for the removal of pulmonary nodules, a pulmonary nodule puncture positioning needle, comprising an outer sheath, the outer sheath comprising an upper sheath cavity and a lower sheath cavity, the upper sheath cavity and the lower sheath cavity being an integrally formed structure; an inner core, the inner core being inserted into the outer sheath; a silk thread assembly being inserted into the inner core; an elastic member, one end of the elastic member being fixedly connected to the inner core, the other end of the elastic member being fixedly connected to the end wall of the lower sheath cavity, and the end diameter of the inner core being larger than the cavity diameter of the lower sheath cavity, the elastic member being located in the upper sheath cavity; and an outer plug. The pulmonary nodule puncture positioning needle disclosed in the utility model is configured such that the outer sheath and the inner core are integrally formed, so that when puncturing, the outer sheath and the inner core can be percutaneously punctured into the pulmonary nodule site at one time, which can not only reduce the difficulty of operation, but also reduce the risk during the puncture process, while improving the success rate of positioning, so that surgeons can effectively find pulmonary nodules and perform removal surgery when performing thoracoscopy and other surgeries.

The invention discloses an aspirator with a lateral electrocoagulation knife for a nasal cavity operation, and relates to the technical field of ear-nose-throat operations, the aspirator comprises an operation unit, the operation unit comprises a holding assembly, an aspirator outer tube assembly arranged at one end of the holding assembly, a lateral electrocoagulation knife assembly arranged on the side wall of the aspirator outer tube assembly, and a rotating assembly arranged in the holding assembly; the extension direction of the side electrocoagulation knife assembly is perpendicular to the extension direction of the aspirator outer tube assembly. The side electrocoagulation knife has the beneficial effects that the side electrocoagulation knife is favorable for carrying out resection operations in positions with relatively large space limitation, such as a nasal cavity, and when the aspirator extends into a lesion position, the side electrocoagulation knife is shrunk into the aspirator outer tube, so that the electrocoagulation knife is prevented from being in contact with surrounding healthy tissues, and liquid generated during resection of the side electrocoagulation knife is conveniently sucked out through negative pressure. The fixed handle and the movable handle can rotate relatively to change the extending shape of the holding assembly.

The present disclosure describes innovations to improve the use of stereo-EEG (sEEG) in treating epilepsy. The systems and methods include a fully automated platform for generating patient specific head models, a visualization of the tissue that can be recorded by a set of sEEG electrodes, an automated implantation trajectory planning algorithm that incorporates the tissue that can be recorded by a set of sEEG electrodes, and a dynamic source reconstruction algorithm that can visualize the epileptiform activity.

The application discloses a pelvic tumor resection surgical incision construction system and a pelvic tumor whole piece resection system. When a tumor does not affect a Ⅳ area, a projection point of a iliac crest on a body surface is taken as a starting point, and a projection point on the body surface is extended in a pubis direction of the iliac bone. According to different extension points, a single smooth virtual incision path one is constructed by bending downward in a thigh direction. When the tumor affects the Ⅳ area and other areas, the virtual incision path is two independent and non-intersecting first incision paths and second incision paths. The first incision path is extended from a body surface projection point of a longitudinal axis of a vertebral body to a sacrum direction, and is an incision path that is inclined to a tumor side in a sacrum area. The second incision path is a line connecting a body back projection point of the iliac crest to a body front projection point, and is combined with a corresponding smooth virtual incision path one to construct a complete smooth virtual incision path two. Through the above-mentioned method, incision intersection can be effectively avoided, and the incision path is beneficial to blood supply, and the healing effect is ensured.

The invention relates to the technical field of clinical medical instruments, in particular to a hepatic portal blocking device for laparoscopic liver resection surgery, which comprises a blocking mechanism, the tail of the blocking mechanism is connected with an adjusting control mechanism through a connecting rod piece, and the blocking mechanism comprises a cylindrical sleeve, a clamping assembly, an extrusion piece, a connecting part and an air bag group. The connecting component is arranged at the tail of the cylindrical sleeve, the tail of the connecting component is connected to the connecting rod piece, the air bag set is connected to the head of the connecting component, the clamping assembly is connected to the air bag set and slidably connected to the front end of the inner side of the cylindrical sleeve, and the extrusion piece is arranged at the outer side end of the clamping assembly. The problems that according to a blocking method of an existing blocking device, due to the fact that operation is inconvenient or blocking is not accurate, bleeding control is not ideal, the blocking effect is poor, the risk of operative complications is likely to be increased, the pressure adjusting capacity is not achieved, adjustment cannot be conducted according to the specific conditions of a patient, the proper blocking mode and force cannot be selected, and the blocking effect is poor are solved. And the adaptability is relatively low.

A fluid management system for use in a tissue resection procedure includes a controller. An inflow pump is operated by the controller and configured to provide fluid inflow through a flow path to a site in patient's body. An outflow pump is operated by the controller and configured to provide fluid outflow through a flow path from the site in patient's body. A motor driven resecting device may be provided for resecting tissue at the site. The controller is configured to actuate an inflow pump and an outflow pump in response to various signals and various algorithms are provided to provide malfunction warnings and assure safe operation.

To provide a system and method for treating targeted tissue using cryoablation.SOLUTION: An introducer canula and a cryoprobe 110 are inserted into the targeted tissue. The cryoprobe 110 is cooled and an ice ball is formed. The cryoprobe is pulled out while the ice ball is still frozen, and an ultrasound catheter is inserted. Ultrasound generated within the ice ball is used to measure the distance from the ultrasound catheter to a perimeter of the ice ball. This is repeated at different angles to create a slice of the ice ball. The ultrasound catheter is moved radially, and the process is repeated to create a model of at least a portion of the ice ball. The ice ball model can be displayed on a registered set of images representing the targeted tissue so as to ensure that the tissue lies within the treatment zone of the ice ball.SELECTED DRAWING: Figure 1

A neurosurgical method for determining a resection status of a tumor is described. The method includes acquiring a medical image of a human organ including a segmented tumor. The method further includes determining a pose of a suction tool including at least one optical fiber and a navigation tracker. The method further includes generating excitation light for the at least one optical fiber to excite the target area which includes the tumor and a margin area surrounding the tumor. The method further includes receiving collected fluorescence emitted from the target area. The method further includes determining whether tissue in the target area corresponds to the tumor based on the collected fluorescence at the pose of the suction tool. The method further includes displaying the resection status of the target area relative to the medical image.

The invention discloses a closed tumor-free drainage apparatus for abdominal tumors, which relates to the field of medical instruments, and comprises a protective sleeve, a sealing mechanism, a limiting mechanism and a sealing mechanism, the protective sleeve is used for protecting when drainage mass cyst fluid is used for reducing the volume of the tumors aiming at the huge tumors (cystic solid / cystic) of the pelvic and abdominal cavities, and the sealing mechanism is used for sealing and attaching the protective sleeve and the tumor cyst wall. The limiting device is arranged at the top of the protective sleeve and used for limiting and controlling the size of an opening in the top of the protective sleeve and sealing the whole protective sleeve after drainage operation is finished to prevent cystic fluid from flowing out to the pelvic cavity; by means of the protective sleeve, a drainage tube can penetrate through the interior of the protective sleeve to drain cyst fluid in the wrapping block in a clinical operation of excising a huge tumor of the pelvic cavity, the protective sleeve can protect drainage of the drainage tube and prevent the cyst fluid from flowing into the pelvic cavity and generating a spreading risk, and after the cyst fluid of the wrapping block is drained, the size of the wrapping block can be reduced, and the size of the wrapping block is reduced. In this way, excision operation can be conveniently conducted on the masses, and the length of an abdominal incision can be shortened during laparotomy.

Compounds useful as contrast agents in image-guided surgery are provided. The compounds comprise a latent cationic lysosomotropic fragment that is detectable upon cleavage by lysosomal proteases within treated tissues, particularly within tumors and other diseased tissues. Also provided are compositions comprising the compounds and methods for using the compounds, for example in dynamically monitoring protease activity in vivo during image-guided tumor resection surgery.

The utility model provides a calcaneus bone spur minimally invasive excision drag hook and device, and belongs to the field of minimally invasive surgery medical instruments. According to the calcaneus bone spur minimally invasive excision drag hook, through the design of the partition plate, when a doctor carries out a calcaneus bone spur minimally invasive excision operation, the drag hook is firstly put into an incision, the bone spur and a toe fascia are separated through the partition plate, and the problem that the toe fascia of the foot is accidentally injured due to the fact that the visual field of the doctor is narrow in the operation process is solved. The drag hook comprises a holding handle, one end of the holding handle is connected with a partition plate, one side of the partition plate is provided with an avoiding opening and a guide plate, the tail end of the partition plate is provided with a baffle, and the guide plate and the baffle protrude out of the same surface of the partition plate. The calcaneus spur minimally invasive excision device comprises a bone knife and the calcaneus spur minimally invasive excision drag hook, a knife edge is arranged at one end of the bone knife, and a fillet is chamfered on one side of the knife edge and matched with the guide plate.

The invention discloses a personalized preoperative risk assessment method for a spinal tumor resection operation, and the method comprises the steps: carrying out the standardization processing of features extracted from the case data of a patient and the corresponding operation plan data, and obtaining the processed features; the method comprises the following steps: preprocessing medical image data to obtain preprocessed data, performing tumor segmentation on the data through a three-dimensional attention U-Net network to obtain a tumor voxel-level probability graph, and calculating a tumor volume; obtaining the type of the tumor through the preprocessed data, the double-flow deep network and the type discrimination network; respectively carrying out standardization processing on the type, the tumor volume, the extracted wettability score and the tumor position grade to form a third feature; obtaining basic weights of the processed features and the third features from a historical database, and then dynamically adjusting the basic weights to obtain a target weight; and performing weighted summation on the target weight, the processed feature and the third feature to obtain a risk score, and matching the risk score with a preset risk score to obtain a preoperative risk assessment level.

1. The name of this design product: Self-locking bidirectional adjustable portal obstruction hemostasis device. 2. Application of the product with this appearance design: It is suitable for tightening and blocking blood vessels or tissues to stop bleeding during laparoscopic partial liver or spleen resection surgery, and for removal after surgery. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The utility model discloses a lower lip positioning clamp for a lower lip tumor resection operation, and relates to the technical field of medical instruments. The device comprises a pair of upper clamping strips which are arranged side by side and a pair of lower clamping strips which are respectively arranged below the two upper clamping strips in parallel, one end of each upper clamping strip is provided with a lower lip pressing part; sliding sleeves are arranged at the other ends of the two upper clamping strips; one end of each of the two lower clamping strips is provided with a lower lip bearing part corresponding to the lower lip pressing part; the other end parts of the two lower clamping strips are respectively inserted into the two sliding sleeves in a sliding manner; mounting holes are formed in the upper surfaces of the two sliding sleeves; positioning columns are arranged in the two mounting holes in a threaded fit mode, and one end of each positioning column can abut against the upper surface of the adjacent lower clamping strip. The other ends of the two positioning columns are connected through a supporting batten. The lower lip cyst resection device is reasonable in structural design and convenient to use, and effectively ensures the resection efficiency of small tumors such as lower lip cyst and the like.

The invention provides a transurethral resectoscope surgical robot actuator. The transurethral resectoscope surgical robot actuator comprises an actuating handle, a stress suspension, a sheathing canal set and an obturator. The sheath tube group comprises an inner sheath and an outer sheath and is used for guiding transurethra and providing an operation space; the execution handle comprises a fixed set and a movable set, the two sides of the end, fixed to the fixed set, of the sheath set are connected with the stress suspension, the eyepiece set and the electric cutting set are connected into the movable set, the electric cutting set is arranged on the peripheral side of the eyepiece set and comprises a segmented electric cutting tube, and the electric cutting tube comprises a front tube section and a rear tube section. When the movable group pushes the electric cutting group to act, the front pipe section is spirally pushed out, and the rear pipe section is linearly pushed out; a water guide opening is formed below the inner sheath and used for guiding out electric cutting diseased tissue. According to the device, multi-angle and multi-frequency cutting is achieved through front section rotary cutting (ball head rotary cutting), waste removal is guided in a matched mode, and the resection operation of large focuses can be effectively coped with.

Techniques for predicting an epileptogenic zone resection surgery outcome for an epilepsy patient are presented. The techniques may include: receiving an identification of a brain location; obtaining a patient brain imaging signal, where the patient brain imaging signal represents interictal activity of the patient's brain; fitting a first dynamical network model to the patient brain imaging signal; calculating a first sink index from the first dynamical network model; constructing, using the first dynamical network model, a synthetic brain imaging signal, where the synthetic brain imaging signal corresponds to a resection at the brain location; fitting a second dynamical network model to the synthetic brain imaging signal; calculating a second sink index from the second dynamical network model; and providing, based on the first sink index distribution and the second sink index distribution, an outcome prediction for resecting the patient's brain at the brain location.

A tissue resection procedure controllably causes tissue destruction in an anatomical region inside a target by: ultrasonically treating the target region with a series of acoustic pulses; detecting an ultrasonic reflection signal from the target region; controlling an ultrasound transducer to deliver a series of acoustic pulses having a sufficient amplitude to the target region to induce sufficient cavitation to mechanically rupture tissue therein; receiving data characterizing the detected reflected signal; computationally estimating a sound activity level or position or sound field distribution at the target region based on the data; and based on a plurality of sound activity level estimates or sound field distribution estimates: ceasing delivery of the sound pulses; continuing to deliver the acoustic pulse at a constant power level; increasing a power level for delivering the acoustic pulse; or a power level for delivering the acoustic pulse is reduced.

The invention discloses a titanium cage clamping impactor which is used for spinal surgery. Comprising a pair of clamping pliers and a striking rod, the clamping pliers comprise a joint shaft, a first clamping piece and a second clamping piece, the first clamping piece and the second clamping piece are rotationally connected through the joint shaft, and the striking rod penetrates through the joint shaft in the radial direction and is located on the same horizontal plane with the clamping pliers. According to the titanium cage clamping and striking device and the application method thereof, the titanium cage can be stably clamped and the position of the titanium cage can be adjusted in an operation, and the titanium cage can be safely and effectively implanted into a decompressed gap, so that the titanium cage mounting problem in the existing vertebral body secondary total resection operation process is solved, the operation of a doctor in the operation process is simplified, and the operation efficiency is improved. And the operation safety is improved.

Preoperative thoracic surgical systems and methods provide tools for visualizing and planning resection procedures. At least a lung and a lesion are segmented from radiographic images and a 3D model is created therefrom. The 3D model is displayed with interactive tools, which enable a clinician to review the 3D model and plan a resection procedure. The interactive tools may allow a clinician to display different portions of the 3D model, to define a margin of the lesion, to define parameters of a resection procedure and / or to display a virtual resection. Radiographic images obtained on different dates may also be displayed simultaneously.

The utility model discloses a head and neck surgery endoscope traction device which comprises a supporting rod, an operating bed fixator, a traction device support and a flexible shaft endoscope support. The supporting rod comprises a vertical rod and a transverse rod which are connected with each other. The operating bed fixer is mounted on the vertical rod and is used for connecting an operating bed; the tractor support comprises a supporting rod connecting piece, the supporting rod connecting piece is installed on the transverse rod, the lower end of the supporting rod connecting piece is connected with a rack transmission assembly, and the lower end of the rack transmission assembly is connected with a three-claw drag hook. The upper end of the flexible shaft endoscope support is installed on the cross rod, and the lower end is used for installing an endoscope. The head and neck surgery endoscope traction device has the advantages of being simple in structure, portable, easy to assemble and easy to adjust; the size is small, and flexible placement can be achieved; the surgery field exposure range can be adjusted. The device can be widely applied to head and neck tumor resection operations.

The invention discloses a pelvic tumor resection surgical incision construction system and a pelvic tumor monolith resection system.The pelvic tumor resection surgical incision construction system is characterized in that when a tumor does not wave an area IV, the tumor starts from a projection point of crista iliaca on the body surface, extends on the projection point of the body surface in the direction from the ilium to the pubis, bends downwards at different extension point positions according to different wave areas and extends towards the thigh; constructing a single smooth virtual incision path I; when the tumor waves the IV region and other regions, the virtual incision path comprises a first incision path and a second incision path which are independent and do not intersect with each other, and the first incision path extends from the longitudinal axis of the vertebral body to a body surface projection point in the sacrum direction and deflects towards the tumor side in the sacrum region; the second incision path is a complete smooth virtual incision path II constructed by combining a connecting line of a projection point behind the iliac crest to a projection point in front of the iliac crest with a corresponding smooth virtual incision path I; in this way, incision intersection can be effectively avoided, the incision path is beneficial to blood supply, and the healing effect is guaranteed.

The utility model provides a drainage device applied to a stomatoscope thyroid resection operation. The drainage device comprises a skin puncture device, a drainage tube indwelling device, a drainage tube guiding device, a guide wire implanting device, a guide wire, a drainage tube and a drainage pot. The skin puncture device comprises a spine section and an operation section. The drainage tube indwelling device is of a tubular structure; the drainage tube guider is of a hollow cylinder structure with two open ends, and a conical structure I is arranged at the front end of the drainage tube guider; the guide wire is a double-soft-head guide wire, the tail end of the guide wire is hemispherical, and the front end of the guide wire is J-shaped; the drainage tube is of a tubular structure with two open ends; the outer tube wall of the front end of the drainage tube is provided with a marking line and a side hole; the guide wire implanting device comprises a circular structure and a guide wire implanting head; the guide wire implanting head is of a conical structure II with two open ends; the drainage pot is an oval pot body. According to the technical scheme, a thin and soft silicon rubber drainage tube can be accurately fed into a postoperative residual cavity at a time.

The laparoscopic ultrasonic imaging method and ultrasonic imaging device provided by the present invention identify the vascular structures in the ultrasonic images of multiple target areas and obtain sub-three-dimensional vascular images of each target area; determine the vascular type of the vascular structure in the ultrasonic image of each target area; obtain the position change information of the ultrasonic probe when performing ultrasonic scanning on each target area, and determine the position information of the vascular structure in the ultrasonic image of each target area based on the position change information; and then, based on the determined position information of the vascular structure, splice the sub-three-dimensional vascular images of each target area to obtain a three-dimensional vascular image and display it. The vascular type can also be displayed differently in the three-dimensional vascular image, so that the doctor can more comprehensively observe the lesions and the three-dimensional spatial status of the blood vessels in the surgical-related area, and better plan and implement puncture or resection surgery.

The invention relates to an intelligent medical instrument, in particular to an electrode anatomy positioning system before intractable epilepsy lesion resection operation, which is used for solving the problems that before resection operation, intracranial electrode contact anatomy attribute judgment is lack of standards, classification depends on artificial experience and is difficult to repeat, and multi-modal images are lack of fusion and quantitative analysis. According to the scheme, brain segmentation is carried out based on a T1w image of a patient before electrode implantation, and each brain region segmentation image is made into a mask image; rigid body registration is carried out based on the brain CT with the implanted electrode and the T1w image, an electrode entry point and a target point are marked, an electrode contact is reconstructed, then the position of the contact is judged according to the coordinates of the electrode contact and the mask image, electrode classification and positioning are achieved, a doctor can conveniently distinguish the source of an intracranial electroencephalogram signal, and then the position of a focus is determined. In addition, the position relation and the metabolism condition of the electrode contacts and the cortex layers of the different brain partitions can be clearly checked by fusing multi-mode images.

The utility model provides a traction device for removing submucosal tumors of the digestive tract, comprising an elastic traction belt, a plurality of traction holes arranged along the length direction on the surface of the traction belt, a water conduit built into the elastic traction belt, the water conduit being connected to a water bag fixed at the front end of the elastic traction belt, and the tail end of the water conduit passing through the tail end of the elastic traction belt and connected to a one-way valve. The utility model is simple to manufacture, can give full play to the role of efficient and convenient auxiliary submucosal tumor removal surgery, quickly, accurately and safely perform submucosal peeling, can also perform gravity traction and internal traction, has multiple traction functions, effectively reduces the time of submucosal tumor removal surgery and anesthesia, reduces the cost of surgery and the risk of surgery-related complications, improves the safety of submucosal tumor removal surgery, improves efficiency, and assists in the smooth completion of difficult submucosal tumor removal surgery.

A virtual resection surgical efficacy evaluation method for hypertrophic obstructive cardiomyopathy based on individualized computational fluid dynamics provides visualized postoperative hemodynamic parameters, predicts postoperative efficacy, identifies the optimal resection plan, and achieves precise and intelligent preoperative assessment. The method includes: acquiring coronary artery enhanced computed tomography (CT) images, obtaining the patient's coronary artery enhanced CT images and outputting and saving them in DICOM format; image data preprocessing, segmenting and reconstructing a three-dimensional model of the left ventricle-outflow tract structure; setting a virtual resection plan for the hypertrophic site; constructing a surgical resection model and importing the model into finite element analysis software for solution; and visualizing the virtual postoperative efficacy. This invention can verify the patient's resection plan and predict efficacy, improving the surgical success rate for patients with hypertrophic obstructive cardiomyopathy.