22 results about "Resective surgery" patented technology

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 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

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.

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.

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 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.

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.

A system according to at least one embodiment of the present disclosure includes: a processor; and a memory coupled with the processor and storing data thereon that, when processed by the processor, enable the processor to: receive an input associated with a surgical instrument interacting with a patient at a first step in a surgical task; provide the input into a control algorithm; receive, as a result of the control algorithm processing the input, an output including one or more operating parameters of the surgical instrument associated with a second step in the surgical task that follows the first step in the surgical task; and automatically adjust the one or more operating parameters of the surgical instrument for performance of the second step of the surgical task.

The utility model relates to a kind of oral endoscope thyroid resection surgery external fixation suspension traction device, including door type support, connecting rod I, connecting rod II, fixer and suspension draw hook;The connecting rod I is vertically arranged in the rear of one side of door type support;The connecting rod I is fixedly connected between the vertical edge of one side of door type support by connecting rod II;The two sides of the connecting rod II are respectively fixedly connected with the vertical edge of connecting rod I and door type support by fixer corresponding cross intersection;The suspension draw hook is fixedly connected on each side of door type support corresponding.The utility model can satisfy under the condition of different patient posture, different traction position, adopt sagittal, coronal and horizontal rotation around patient head and neck to carry out accurate external fixation traction.In reducing operation risk, reducing operation difficulty, improving tissue protection and shortening operation time, obvious effect is achieved.

The utility model relates to the technical field of anoscopes, in particular to a special anoscope for transrectal dissection exposure and suction, which is characterized in that a support mechanism extends into the rectum of a patient from the anus of the patient, and is guided by a guide mechanism, so that the support mechanism supports and stretches the rectum of the patient; the elasticity of the resection position on the rectum is reduced, and a doctor can conveniently carry out resection operation, so that the practicability of the anoscope special for transrectal dissection exposure and suction is improved; comprising a guide mechanism; the supporting mechanism is mounted on the guide mechanism in a sliding manner; the guiding mechanism guides the supporting mechanism, and the supporting mechanism supports the anus and the rectum of a patient.

The present application relates to a kind of multi-view fusion cervical precancerous lesion image classification methods based on self-supervised learning, comprising: the video screenshot data of prostate endoscope resection surgery is collected, and pretreatment is carried out, and the optimized model weight is obtained;Second visual Transformer model, third visual Transformer model are obtained after optimization;Cervical precancerous lesion colposcope acetic acid picture classification result and cervical precancerous lesion colposcope iodine picture classification result are weighted fusion, and final classification result is obtained.The present application introduces self-supervised learning method, utilizes a large number of unlabeled medical picture data, improves the generalization ability and classification accuracy of ViT model, i.e., visual Transformer model in cervical precancerous lesion grading;Realize the efficient auxiliary diagnosis of CIN grading, especially in the area of limited medical resources, provide efficient, low-cost solution for automated screening, help doctors improve diagnostic accuracy, and reduce the rate of missed diagnosis, provide important technical support for early cervical cancer prevention.

The application provides a method and device for postoperative evaluation of apicoectomy, electronic equipment and storage medium, wherein the method comprises: obtaining preoperative evaluation parameters based on a preoperative reconstruction model of teeth in an oral cavity, wherein the preoperative reconstruction model comprises a planned surgical path of apicoectomy; obtaining a postoperative reconstruction model of teeth in the oral cavity, and determining an actual surgical path of the apicoectomy in the postoperative reconstruction model; registering the preoperative reconstruction model and the postoperative reconstruction model, and obtaining postoperative evaluation parameters based on the registered postoperative reconstruction model; and determining a surgical accuracy evaluation result based on the preoperative evaluation parameters, the postoperative evaluation parameters, the planned surgical path and the actual surgical path. The method, device, electronic equipment and storage medium provided by the application can accurately evaluate the accuracy of apicoectomy, and provide a basis for subsequent treatment schemes.

The utility model discloses a colorectum fixing and pulling-out auxiliary device which comprises two sets of limiting and fixing plates, the limiting and fixing plates are in an arc shape, a semicircular notch is formed in one side of each limiting and fixing plate, the two sets of limiting and fixing plates are spliced to limit the colorectum through the notches, containing grooves are formed in the two ends of each limiting and fixing plate, and the limiting and fixing plates are arranged in the containing grooves. Dirty liquid generated by an operation can slide into the containing grooves in the two ends through the surface of the arc-shaped limiting fixing plate to be collected, the dirty liquid is discharged through the drain outlets in the bottoms of the containing grooves, and limiting mechanisms are arranged at the two ends of the limiting fixing plate. According to the colorectum fixing and pulling-out auxiliary device, the two sets of limiting and fixing plates are matched with the notches to limit and fix the colorectum, medical staff can carry out resection operation on the colorectum of the limiting part, dirty liquid generated in the resection process can slide towards the two ends along the surfaces of the limiting and fixing plates and is collected in the containing grooves, and therefore the medical staff can carry out resection operation on the colorectum. And infection caused by backflow of dirty liquid into the abdominal cavity can be effectively avoided.