14 results about "Tumor excision" patented technology

The invention provides an intraoperative path optimization method and system based on solid tumor preoperative image analysis, and the method comprises the steps: constructing a three-dimensional model of a tumor and peripheral blood vessels and nerves according to a preoperative image, and carrying out the dissection risk marking of the three-dimensional model through a deep learning model, generating an anatomical risk image with risk gradient value distribution; taking the minimum intraoperative bleeding amount and the highest tumor excision rate as a reward function, combining the three-dimensional model, an anatomical risk image and historical similar case data, and simulating multiple operation paths based on an adversarial reinforcement learning algorithm to obtain an optimal operation path; the method comprises the following steps: acquiring the pose, ultrasonic image and fluorescence image of a surgical instrument in real time during surgery, matching the preoperative image with the intraoperative image based on a biomechanical model driven non-rigid registration algorithm, predicting organ displacement, and correcting an optimal surgical path, thereby avoiding accidental injury of key tissues, ensuring that an infiltration area is brought into the surgical path in time, and improving the surgical efficiency. Residues are reduced, and static planning failure is avoided.

The invention relates to the field of dermatology, and provides a rapid skin tumor resection tool aiming at the technical problem that an existing resection device is low in use efficiency, the rapid skin tumor resection tool comprises a shell with the inner area divided into a front end cavity, a middle end cavity and a rear end cavity, a front cover and a rear cover are rotationally connected to the positions, located outside the front end cavity and the rear end cavity, of the shell, the cutting device is arranged in the shell, and the cutting device comprises a high-pressure gas driving module which is arranged in the rear end cavity and extends to the middle end cavity; the homologous driving type displacement and rotary excision module is arranged in the front end cavity and is communicated with the high-pressure gas driving module; and the synchronous collection module is arranged in the front-end cavity. High-pressure gas is adopted as a power source of the excision device, generated chippings and blood can be blown away in time, the surgical field is kept in a clean state all the time, the tumor can be rapidly and accurately excided, and the use efficiency is high.

A method for treating a tumor excise site defined by a center and edges is described. The method includes simultaneously exposing the tumor site to radiation and pulsating heat. Also described is a device for treating tumors at a target site. The device includes a first balloon containing a radio isotope and a second balloon encasing the first balloon. The second balloon defines structures to create a void between the first balloon and the second balloon such that pulsing, temperature treated fluid traverses the void.

A method for treating a tumor excise site defined by a center and edges is described. The method includes simultaneously exposing the tumor site to radiation containing fluid and pulsating thermally treated fluid, wherein the fluids are separate from each other and confined to a balloon. Also disclosed is a device for treating a tumor excise site defined by a center and edges. The device includes a reversibly deformable container positioned at the center, the container encapsulating thermally treated fluid; a first drainage conduit; and a second radio-isotope containing conduit contacting a second longitudinally extending surface of the first drainage conduit so as to be positioned between the first drainage conduit and the center.

The invention relates to the technical field of bone defect reconstruction, in particular to a 3D printing guide plate for autologous iliac bone extraction and bone defect reconstruction and a preparation method and application of the 3D printing guide plate for autologous iliac bone extraction and bone defect reconstruction. Tumor excision is simulated in a computer, and a bone defect area three-dimensional model is generated; according to the bone defect area model, the optimal ilium taking position, size, shape and bone taking scheme are determined through computer aided design; designing a bone taking guide plate and a fixing guide plate according to the bone taking scheme, wherein the guide plate is prepared through a 3D printing technology. According to the method, key steps (such as tumor resection simulation, bone taking scheme design and bone grafting fixation simulation) of bone defect reconstruction are all completed under the assistance of a computer, a standardized operation process is formed, and a standardized solution for bone defect reconstruction is constructed.

The invention relates to the technical field of medical equipment, in particular to a rib bone fracture plate, a limiting and fixing assembly and a lock catch assembling method of the limiting and fixing assembly, and is suitable for internal fixation after rib fracture or rib bone tumor excision. The rib bone fracture plate is assembled in a combined mode and can be assembled and used according to the requirements of different patients, the left encircling claw and the right encircling claw reinforce fixation, and the adjustable moving claw is installed according to different positions of the affected bone so that the requirement for fixing the ribs of the patients with comminuted fractures can be met. The movable claw is mainly used for fixing broken bone blocks in rib fracture fixation, the lower plane of the cross beam makes contact with the broken bone blocks and provides a fixing face, and the movable claw fixes the broken bone blocks left and right to achieve the mechanical fixing effect of the broken bone blocks.

Disclosed is a medical bead string-type positioning and marking device, which comprises a long cylindrical needle tube for puncturing, a marker body for tumor positioning, and a limiting device acting between the marker body and the needle tube. The marker body comprises a bead string and a hook part, the hook part is arranged at a front end of the bead string, the bead string consists of a strand and a plurality of bead bodies uniformly fixed on the strand, and the plurality of bead bodies are spaced apart from each other. The limiting device comprises a limiting block, and an upper shell and a lower shell that are snap-fitted, and an elastic clamping groove corresponding to the position of the bead string is formed in a contact surface of the snap-fitted upper shell and lower shell. This device enables multi-directional marking and positioning of the tumor position of a patient by means of the marker body, thereby providing a basis and guarantee for subsequent precise tumor excision that takes the bead string as a reference. It is particularly suitable for tumor marking and positioning of a breast cancer patient receiving neoadjuvant therapy and planning to conserve the breast.

1. The name of the design product: bone defect prosthesis. 2. The use of the design product: for repairing large bone defects caused by tumor resection, severe trauma, etc. Through surgical implantation in the affected area, it replaces the missing part of the human bone and restores the normal shape and function of the bone. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: Design 1 Solid Drawing 1. 5. Design 1 is designated as the basic design.

A magnetic type sterile anti-permeation reusable anti-slip retaining pocket comprises retaining pocket cloth, a surgical operation opening is formed in the retaining pocket cloth, double rows of magnetic buckles are installed at the tail end of the retaining pocket and embedded into the retaining pocket cloth, and the size of the exposed area of a surgical site can be adjusted through magnetic buckling of the magnetic buckles at different positions. Side pockets are arranged on the two sides of the front face of the pocket blocking cloth, and the pocket blocking cloth is of a three-layer structure and comprises bottom-layer twill, middle-layer waterproof cloth and surface-layer twill. The surface layer and the bottom layer of the pocket blocking cloth are made of twill cloth, the middle layer of the pocket blocking cloth is made of waterproof cloth, and the pocket blocking cloth is waterproof, capable of preventing blood pollution, soft in material, convenient to use and capable of being repeatedly used, saves resources, achieves the principle of timely isolation of tumor resection positions and has the effect of preventing tumor diffusion pollution.

A multi-axis tumor excision marker system is configured to deposit markers along multiple axes radially about a tumor to define a boundary of margin tissue for excision. A catheter may deploy a marker extension that extends to a margin tissue boundary for depositing the marker. The marker extension may be a shape memory material that extends radially outward from catheter opening or may be directed radially outward by a guide head. The radiopaque marker may be a phase change marker, such as an adhesive that changes from a liquid to a solid. A marker may be a discrete marker and may have an extension portion that extends from an anchor portion. An envelopment marker has a plurality of marker extensions that each extend along an offset axis from each other. A spiral maker includes a maker extension that spirals around the margin boundary tissue.

This invention discloses a master-slave controlled endoscopic surgical robot for tumor resection, belonging to the field of minimally invasive surgical robots. It includes a clamp drive mechanism and an electrosurgical drive mechanism, both of which include a fixed platform and a drive unit. The fixed platform includes a base and a support unit, which moves back and forth on the base via an integral feed unit. The drive unit includes a stepped shaft and a driver slip ring connector. Multiple integral optical rods are provided between the stepped shaft and the driver slip ring connector. Large pulleys are mounted on the integral optical rods, and the large pulleys are connected to small pulleys via belts. The small pulleys are connected to the output end of an integral rotary motor. A conductive slip ring is fixedly mounted at the rear end of the driver slip ring connector. The stepped shaft and the conductive slip ring are respectively placed on the front and rear supports of the support unit. The clamp and electrosurgical knife of this invention operate independently without interference and can coordinate to simultaneously perform tumor clamping and resection operations.

The utility model discloses a minimally invasive excision device for urinary surgery tumor, which comprises a device main body, the device main body is composed of a resectoscope main body and a resectoscope sheath, one end of the resectoscope main body is provided with a main channel catheter, one end of the main channel catheter penetrates through the resectoscope sheath and extends to the outer side of the resectoscope sheath, and the other end of the main channel catheter is provided with a guide tube. A fixed sleeve is fixedly mounted on the surface of the other end of the resectoscope main body through a bolt; a surgeon holds a guide handle to guide more flexibly, a fixed sleeve, a movable sleeve, a lantern ring supporting piece, a thumb ring, an I-shaped connecting piece, an electrode knife rod and a torsional spring are arranged in a matched mode, the strength of a supporting point is increased when the electrotome head conducts tumor excision, the surgeon presses and pinches the distance between the handle ring and the thumb ring according to needs, and the torsional spring rebounds; and the movable sleeve stably slides on the surface of the guide rod, the movable sleeve drives the electrode cutter rod to stably support, and the working difficulty of tumor operation excision is reduced.

The present invention provides methods for detecting and predicting minimal residual disease in a subject who has undergone tumor resection surgery. Methods of the invention utilize a personalized cutoff for determining the likelihood for MRD.

The invention belongs to the technical field of medical instruments, and discloses an oral and maxillofacial surgery tumor resection device, a driving assembly comprises a screw rod rotationally connected with a base, the base is provided with a motor, the screw rod is in threaded connection with a pair of nuts with opposite rotating directions, the nuts are in sliding connection with the base, and a mouth distraction piece is connected with the nuts; the screw is connected with a straight gear, the base is connected with a first straight rack and a second straight rack, the first straight rack is connected with a traction piece, and the second straight rack is connected with an ejection piece. The ejection piece and the traction piece are driven by the nuts with opposite rotating directions to move in opposite directions, the mouth of a patient is opened, and the operation view is exposed; the gear and the rack are used for driving the traction piece and the ejection piece to inwards eject the cheeks of a patient and meanwhile, the mouth corners are pulled outwards, so that the visual field is fully exposed, support is provided for the cheeks, operation of a doctor is facilitated, crowding of people around an operating table is avoided, and the stable and clear operation visual field can be continuously provided.