24 results about "Tumor excision" patented technology

The invention discloses a liver cancer image lightweight segmentation method based on UNet, and relates to the technical field of liver cancer segmentation of medical images. According to the method, a lightweight dilated convolution attention module combining local separable dilated convolution and a context anchor attention module is provided, and the feature expression ability is enhanced while the calculated amount is reduced; a self-adaptive wavelet pooling down-sampling module combining wavelet transform and a self-adaptive attention mechanism can perform further feature concentration and extraction on the feature map; a lightweight feature up-sampling and enhancement fusion module composed of a local separable cavity convolution module and a multi-frequency channel attention module can effectively improve the cross-scale feature fusion capability of the model, and maintain a low parameter amount and a low calculation amount. According to the method, while the parameter quantity and the calculation cost are remarkably reduced, the anatomical features of the liver can still be accurately captured, a finer segmentation result is provided, doctors are assisted in optimizing treatment schemes such as tumor excision and living body transplantation, and the clinical decision-making efficiency is improved.

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 discloses a digital guide plate for oral cavity tumor excision and contemporaneous bone implantation and a preparation method, the digital guide plate comprises a tumor excision indication guide plate, an autogenous bone osteotomy indication guide plate, an implantation indication guide plate, an implantation reduction guide plate and an autogenous bone reduction guide plate, and the preparation method comprises the following steps: constructing a virtual model and determining a tumor excision range; oral implantation planning is conducted, the position and range of a reconstructed titanium plate are determined, a digital guide plate is printed in a 3D mode, and a temporary abutment is connected to an implantation reduction guide plate through model operation training. By applying the digital guide plate, tumor resection, autogenous bone resection, autogenous bone reduction and precise implant implantation can be achieved in the same operation process. The digitized guide plate is used for guiding the implant to be implanted, the position of the implant is used as a reference, autogenous bone reduction can be accurately guided, and the precision of implant repair can be remarkably improved. The technical problems that in the prior art, the implant position is judged according to experience of doctors, and the autogenous bone reduction precision is not ideal can be solved.

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 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.

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 device comprises a handle, a gun barrel and a working head, the handle is arranged at the rear end of the gun barrel, the working head is arranged at the front end of the gun barrel, the working head is of a flat oval structure, one end, corresponding to a long shaft, of the working head is connected with the gun barrel to form the rear end of the working head, and the other end of the working head is connected with the gun barrel. The other end of the long shaft forms the front end of the working head, and the axial center lines of the gun barrel, the handle and the working head are located on the same plane. The gun is characterized in that the included angle between the rear end of the working head and the gun barrel is 70-100 degrees, and the working head warps upwards towards the handle in an arc shape from the rear end of the working head to the front end of the working head. The tumor excision device can be universally suitable for excision of tumors in skull base pore canals and can efficiently excide the tumors in the skull base pore canals.

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.

The invention relates to a neuropilin-1 targeted bimodal molecular probe and application thereof, and belongs to the technical field of chemistry. The invention provides a PET / NIRF (Positron Emission Tomography / Non-Iphiliated Receptor Factor) bimodal molecular probe targeted to neurodylin-1. The probe is obtained by simultaneously coupling anthocyanin Cy5 and positron radionuclide 68Ga with NRP-1 targeted polypeptide. The probe has the advantages of being simple in precursor compound synthesis step, good in optical property, high in labeling rate and stability, high in targeting specificity and the like, and can be selectively taken in an NRP-1 positive tumor site. Moreover, the probe has the advantage of bimodal imaging, on one hand, the change of the NRP-1 level in tumor cells can be dynamically monitored in real time through PET imaging so as to realize preoperative tumor diagnosis, and on the other hand, NIRF imaging can be used for tumor localization and boundary division so as to guide intraoperative tumor excision and improve the postoperative curative effect.

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.

The invention provides a sensitization type internal radiotherapy device which comprises an injection part, a catheter, an internal balloon, an external balloon, a radioactive solution and a radiosensitization material. Through the design of the two balloon cavities, volume adjustment of a radiotherapy solution and timely supplement of radiosensitization materials are realized, and continuous and effective treatment is ensured. The radiosensitization material can enhance the sensitivity of tumor cells to radiotherapy and contains magnetocaloric effect components, and an external electromagnetic field can increase the temperature and enhance the ray killing effect; the injection part is of an integrally-formed structure, the sealing performance is improved, and the leakage risk is reduced; the device is used for solving the problem that the edge infiltrates surrounding healthy tissues after tumor excision, has recoverability, puncture resistance, convenience in fixation and flexible operability, and is particularly suitable for postoperative adjuvant therapy of malignant tumors such as brain glioma and breast cancer.

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.

The invention relates to the technical field of tumor resection instruments, in particular to a visual nerve scraping ring which comprises a scraping ring body and a scraping ring rod fixedly connected with the scraping ring body, the end, away from the scraping ring body, of the scraping ring rod is fixedly connected with a scraping ring handle, an adapter is installed on the scraping ring rod, an endoscope connecting rod is installed on the adapter, and the endoscope connecting rod is fixedly connected with the scraping ring rod. The end, close to the scraping ring, of the endoscope connecting rod is fixedly connected with an endoscope lens. The device has the advantages that the distance between the endoscope lens and the scraping ring is kept relatively consistent, and synchronous operation of the scraping ring and the endoscope lens is achieved; in addition, the risk that the scraping ring damages the cavernous sinus wall or the internal carotid artery blood vessel wall is greatly reduced, and the safety effect of the operation is improved.

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.

Described herein is a device and method used to effectively remove volume inside a patient in various types of surgeries, such as spinal surgeries (e.g. laminotomy), neurosurgeries (various types of craniotomy), ENT surgeries (e.g. tumor removal), and orthopedic surgeries (bone removal). Robotic assistance linked with a navigation system and medical imaging it can shorten surgery time, make the surgery safer and free surgeon from doing repetitive and laborious tasks. In certain embodiments, the disclosed technology includes a surgical instrument holder for use with a robotic surgical system. In certain embodiments, the surgical instrument holder is attached to or is part of an end effector of a robotic arm, and provides a rigid structure that allows for precise removal of a target volume in a patient.

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.

Described herein is a device and method used to effectively remove volume inside a patient in various types of surgeries, such as spinal surgeries (e.g. laminotomy), neurosurgeries (various types of craniotomy), ENT surgeries (e.g. tumor removal), and orthopedic surgeries (bone removal). Robotic assistance linked with a navigation system and medical imaging it can shorten surgery time, make the surgery safer and free surgeon from doing repetitive and laborious tasks. In certain embodiments, the disclosed technology includes a surgical instrument holder for use with a robotic surgical system. In certain embodiments, the surgical instrument holder is attached to or is part of an end effector of a robotic arm, and provides a rigid structure that allows for precise removal of a target volume in a patient.

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.

The utility model relates to a suture device for an endoscope, belongs to the technical field of medical instruments, and solves the problem that a large wound surface is difficult to suture after a tumor resection operation. The suture device comprises a guide wire, an outer catheter, a pull wire, a spiral nail, a guide wire handle and a catheter handle. The guide wire is clamped with the screw nail to drive the screw nail to rotate; the guide wire handle is used for driving the guide wire to rotate; internal threads are arranged at the tail end of the outer catheter; a plurality of spiral nails are arranged in the outer catheter; the catheter handle is used for positioning the outer catheter; the spiral nail comprises an upper sleeve, a threaded connecting part, a clamping part and a screwing part. The threaded connecting part is screwed with the internal thread; a threading hole is formed in the threaded connecting part, and a pull wire penetrates into the threading hole to connect the multiple spiral nails in series; when the spiral nail rotates, the screwing part at the tail end of the spiral nail can be screwed into the tissue to be sutured. The sleeve guide wire rotates to drive the spiral nail to be driven in and released in a rotating mode, and the wound surface can be shrunk by tensioning the pull wire on the spiral nail.