49 results about "Reconstruction surgery" patented technology

The invention provides a preoperative planning method for ligament reconstruction operation based on multi-modal data. The preoperative planning method of the ligament reconstruction operation based on the multi-modal data comprises the following steps: acquiring joint medical images of multiple modals of an operation site, and performing registration and fusion processing on the acquired joint medical images of multiple modals to obtain a joint medical image multi-modal fusion result; performing segmentation processing according to the joint medical image multi-modal fusion result to obtain a joint segmentation result; performing key point detection according to the joint segmentation result to obtain a key point detection result; according to the key point detection result, a ligament reconstruction preoperative planning scheme is generated.

The application provides a kind of extrusion nail and its assembly for orthopedics, which is applied to the technical field of orthopedic surgical instruments.The extrusion nail adopts a threadless structure and is composed of a nail body, a barb and an extrusion groove, and can be adapted to different length bone tunnels through the head-to-tail matching of multiple nails.The assembly includes an execution end and an impact handle, which can provide linear impact force to realize the linear implantation of the extrusion nail.The application replaces the rotary screwing with linear advancement, fundamentally avoiding the shearing and torsional injury of ligaments, and has the advantages of precise implantation, convenient operation and stable fixation, which meets the clinical needs of orthopedic ligament reconstruction surgery and improves the safety of surgery and the quality of postoperative healing.

The utility model discloses a degradable fixing ring for fixing an external auditory canal flap in external auditory meatus plasty, which is formed by bending and connecting a degradable belt, nesting structures which can be nested together are arranged at the head end and the tail end of the degradable belt, and a degradable supporting ring can be stretched and enlarged by stretching the connection at the nesting structures, so that the degradable fixing ring can be used for fixing the external auditory meatus flap in the external auditory meatus plasty. Limiting structures are further arranged at the head end and the tail end of the degradable belt, the limiting structures can limit the degradable supporting ring to shrink backwards after the degradable supporting ring extends and becomes larger, and a connecting part used for being fixedly connected with an external auditory canal transplantation flap is arranged on the degradable supporting ring. The external auditory canal graft flap fixing device can fix an external auditory canal graft flap, reduce the number of times of returning to hospital of a patient, and improve the compliance and medical experience of the patient.

The application discloses a positioning method of uterine cardinal ligament and sacral ligament and a pelvic floor finite element evolution model construction method, and belongs to the field of two-dimensional digital modeling and biomechanics research. According to the pelvic floor anatomy structure, the starting point and the ending point of the cardinal ligament and the sacral ligament in the two-dimensional finite element model are determined, and a distributed nonlinear hyperelastic spring group is proposed to simulate the suspension mechanical properties of the cardinal ligament and the sacral ligament. An organ tissue proportional damage simulation method and a proportional damage expression are proposed, the nonlinear material stress-strain curve of the pelvic floor organ tissue is multiplied by a proportional damage factor to simulate the mechanical properties of the pelvic floor organ damage. A concentrated load application method and a concentrated force-displacement expression of the initial shape feature are proposed to simulate the initial genital cleft and the uterine-vaginal angle. The evolution model can intuitively show the mechanical changes and shape feature change trends of the pelvic floor from the initial injury to the severe prolapse, and provides a basis for the reconstruction surgery design of the pelvic organ prolapse.

The application discloses a low-light enhancement method and system for a cardiac intervention surgery scene based on a diffusion model, aiming to solve the problem of unclear surgical field in a low-light environment. The application collects multi-angle low-light images through a miniature camera and an external camera system, and performs enhancement processing by using a diffusion model optimized for the cardiac intervention surgery scene. The diffusion model uses two low-light image sources providing different scales and angles as training data sets to capture image details at different levels from micro to macro. By performing the diffusion process at different resolutions, the microstructure and overall tissue layout in the surgical field can be more accurately reconstructed. By introducing prior knowledge related to the cardiac intervention surgery to dynamically adjust the value of noise scheduling, and performing illumination parameter prediction to guide the optimization of diffusion model parameters, the diffusion model can more accurately improve the image quality of the surgical area in real time.

A method of providing information for predicting the prognosis of breast reconstruction surgery and a system for predicting the prognosis of breast reconstruction surgery is provided. By using the method or system for providing information for predicting the prognosis of breast reconstruction surgery according to one specific example of the present invention, it is possible to predict the possibility of implant rupture in a subject who has undergone or is scheduled to undergo two-stage breast reconstruction surgery, and it is possible to prepare an appropriate treatment according to this prediction, and to adjust the interval between breast reconstruction surgeries so as to lower the possibility of implant rupture. In addition, it is possible to provide information so that an implant with a low possibility of rupture may be selected.

The application provides a wireless implantable pH sensor for monitoring anastomotic stoma after gastrointestinal reconstruction surgery, which comprises a piezoelectric transducer, a circuit module, a pH detection bin and a packaging layer. The application can continuously monitor in real time, reduce the impact on patients, and avoid the risks that may be caused by traditional invasive methods. In terms of biocompatibility, the sensor is specially designed to be more suitable for long-term use in the body, reducing the risk of immune response and other physiological rejection. Compared with traditional pH measurement technology, this wireless implantable pH sensor can detect gastrointestinal fluid leakage in real time, faster and at a lower cost. In addition, the device can transmit monitoring data directly to external devices, facilitating remote monitoring by doctors, and avoiding subjective judgment of pH. This technology not only improves the accuracy of detection, but also significantly reduces the burden on patients and medical staff.

The present invention relates to a rupturing tool for surgical interventions and to a rupturing system comprising the rupturing tool and a rupturing movement generator device. The rupturing tool and system are intended for the field of traumatology, particularly for the creation of bone tunnels suitable for the proper anatomical reconstruction of tendons and ligaments; for example, for the creation of bone tunnels in interventions for reconstructing the anterior cruciate ligament (ACL) of the knee joint and in interventions for repairing the supraspinatus tendon of the shoulder joint.

A surgical fixation system can include a fixation device, a loop connected to the fixation device, a graft carried by the loop, and a reinforcement material. Surgical fixation systems can be used in various tissue reconstruction procedures, including but not limited to, ACL and PCL reconstructions. The graft and the reinforcement material may be tensioned independently of one another to avoid stress shielding the graft.

A skull mark point recognition method based on bone seam boundary extraction and intersection recognition comprises the steps that firstly, a segmented skull three-dimensional CT tag image is obtained to serve as input; then, performing binarization processing and morphological expansion operation on each skeleton label, and extracting boundary voxels of each skeleton; thirdly, fusing and superposing all skeleton boundaries, and detecting voxel points which are overlapped at two or more skeleton boundaries as candidate bone seam intersections; then, classifying and identifying the candidate intersection points based on a predefined skeleton combination rule, and determining the types of the skull anatomical mark points corresponding to the candidate intersection points; and finally, a geometric feature optimization strategy is adopted for the position of each mark point, and the final space coordinate of each mark point is obtained through calculation. The invention further provides a skull mark point recognition system. The whole process does not depend on machine learning model training, the result interpretability is high, a large amount of labeled data is not needed, the positioning precision is high, and the method can be widely applied to scenes such as medical image three-dimensional reconstruction and surgical planning navigation.

The utility model belongs to the field of medical apparatus and instruments, disclose a kind of quadriceps tendon minimally invasive tendon harvesting device in knee ligament reconstruction surgery, including stem body;Any end of stem body is detachably connected with tendon harvesting head;Channel for arthroscope insertion is opened in stem body inside, channel is coaxially placed with stem body, channel penetrates both ends of stem body;Transparent glass disc is equipped in stem body inside, glass disc is coaxially placed with stem body, and glass disc is located in one end of stem body close to tendon harvesting head, the projection of channel along its axial direction is located in the inside of glass disc peripheral wall, and the connection position and external shape structure of tendon harvesting head make the axis extension direction of channel keep open visible space;Medical staff can operate by single hand holding stem body and arthroscope, and can ensure arthroscope and stem body synchronous movement in operation process, effectively solve the problem that existing technology exists when holding tendon harvesting instrument and arthroscope with two hands, operation is complicated and difficult to move synchronously, easy to cause arthroscope vision unstable.

The invention provides a controllable cerebral blood flow adjusting device for cerebral blood flow reconstruction surgery, and relates to the technical field of medical instruments, the controllable cerebral blood flow adjusting device comprises a connecting elastic piece, and the two ends of the connecting elastic piece are connected with clamping pieces; the clamping piece is of an arc-shaped plate structure, and a traction piece is mounted at the bottom of the clamping piece; the connecting elastic piece, the clamping piece and the traction piece are made of polylactic acid-glycolic acid copolymer. When the device is used, under the assistance of ultrasonic waves, a traction sheet is used on a blood vessel to set proper clamping force so as to artificially cause blood vessel constriction, the inner-layer clamping sheet with different polylactic acid-glycolic acid copolymer proportions is used, the degradation speed of the whole device can be controlled and adjusted, then along with ordered degradation of the device, the clamping force on the blood vessel is gradually reduced, and the blood vessel constriction effect is improved. The constriction degree of the blood vessel is gradually reduced, and the blood vessel is finally recovered to a normal blood vessel diameter, so that the problems of headache, dizziness and other discomfort of a patient caused by intracranial blood flow over-perfusion are solved.

The invention provides a degradable antibacterial bioactive interface screw and a manufacturing method thereof. The interface screw comprises a screw shell, a head part, a rod part with external threads and a tail part are sequentially arranged in the axial direction of the screw shell, and the tail part is of a conical structure; an inner core penetrating through the rod part is arranged in the screw shell, the inner core is of a network-shaped porous structure, and a release hole channel communicating with the inner core is formed in the outer surface of the rod part; the inner core is filled with an antibacterial functional body, the antibacterial functional body comprises gallium-silver composite antibacterial particles, and the gallium-silver composite antibacterial particles are released into the external environment of the screw shell through the release hole channels. According to the technical scheme, the interface screw can promote bone-ligament interface healing, controllable release of antibacterial components is achieved, the structure can be flexibly adjusted through a digital model, and the interface screw is suitable for personalized ligament reconstruction operations.

The invention provides a multi-modal data processing method and device for ligament reconstruction surgery. The multi-modal data processing method for the ligament reconstruction operation comprises the following steps: acquiring multi-modal joint medical images of an operation site; inputting the multi-modal joint medical images into a pre-trained multi-modal medical image fusion model to obtain a joint medical image multi-modal fusion result output by the multi-modal medical image fusion model; and inputting the joint medical image multi-modal fusion result into a pre-trained joint segmentation model to obtain a joint segmentation result output by the joint segmentation model so as to construct a preoperative planning scheme of a ligament reconstruction operation based on the joint segmentation result.

This utility model discloses a bone tunnel length measuring device for total internal cruciate ligament reconstruction surgery, relating to the field of medical device technology. It includes a guidewire, one end of which is a traction end, and the other end is fixedly connected to a limiting measuring bead. A groove measuring device has a bent hole at one axial end, with the other end of the bent hole extending to the side wall of the groove measuring device. The bent hole at the end of the groove measuring device is for guidewire insertion, and the other end of the bent hole is for guidewire exit. The outer wall of the groove measuring device has graduation lines, and the guidewire has a tail end mark. This utility model is a bone tunnel length measuring device for total internal cruciate ligament reconstruction surgery. After the half-length tunnels on both sides are fabricated, this device can be introduced to accurately measure the actual coarse tunnel length, thereby solving the problem of inaccurate calculation of the sum of A+B+C in clinical practice. It can accurately verify the length of the woven tendon and the bone tunnel.

The present embodiment relates generally to methods of performing surgical technique maxillary sinus floor augmentation with a lateral approach using a pre-portioned and ready pre-packaged bone graft composition in gelatin bags and method of producing gelatin bags. In addition the present inventions can be widely used in other medical fields such as dentistry, orthopedic surgery, spine surgery, plastic and reconstruction surgery, sport medicine, trauma surgery, phinoplasty surgery and veterinary.

The invention provides a bone tunnel planning method and device for a ligament reconstruction operation. The bone tunnel planning method for the ligament reconstruction surgery comprises the following steps: acquiring an initial key point detection result of a surgical site; selecting a plurality of groups of candidate points on the joint three-dimensional model of the surgical site according to the initial key point detection result; according to the joint movement data of the surgical site, ligament length expansion and contraction amount data corresponding to the multiple preset angles of each group of candidate points are determined; and according to the ligament length expansion amount data corresponding to each group of candidate points under the plurality of preset angles, determining a target key point for constructing the bone tunnel.

The invention provides a navigation and positioning system and method for a ligament reconstruction surgical robot. The ligament reconstruction surgical robot navigation positioning method comprises the following steps: performing segmentation and reconstruction according to an obtained joint medical image of at least one modal to obtain a joint three-dimensional model, and performing preoperative planning according to the joint three-dimensional model to determine a ligament reconstruction surgical scheme; performing intraoperative registration according to the intraoperative registration points acquired during the operation and the preoperative registration points planned before the operation to obtain a registration result; generating an intraoperative navigation instruction according to the surgical scheme and the registration result; and ligament reconstruction surgery operation is assisted according to the intraoperative navigation instruction.

The application provides a three-dimensional nuclear magnetic resonance footprint area spatial positioning and morphological analysis method and system, comprising the following steps: S1, obtaining a weighted 3D MRI magnetic resonance image, and performing footprint area layer reconstruction; S2, obtaining an image parallel to the footprint area plane, and determining a spatial positioning area; S3, performing footprint area outlining, and segmenting the footprint area; and S4, performing spatial positioning analysis and morphological analysis on the footprint area. By adopting the 3D MRI reconstruction technology, the application can accurately evaluate the ACL femoral footprint area in the oblique sagittal plane which is tangent to the attachment point of the ACL and the femur, solves the inaccurate problem of the ACL femoral footprint area morphological evaluation in the traditional 2D MRI evaluation method, and thus provides more accurate ACL femoral footprint area morphological information for doctors, and further optimizes the effect of the ACL reconstruction surgery.

A system for connecting to a graft to in a reconstruction surgery, comprising: a suture construct; and a staple configured to anchor the suture construct to the graft.

The application relates to a dynamic three-dimensional reconstruction method and system for liver resection, which comprises the following steps: obtaining initial mesh data based on preoperative CT images; obtaining two-dimensional projection images of a surgical area by using intraoperative CT to obtain target mesh data; constructing surface models by using the target mesh data and the initial mesh data respectively and performing rigid registration, and demarcating a model surface part with a larger deformation region as a to-be-reconstructed space; performing non-rigid deformation on the initial mesh region in the to-be-reconstructed space to reconstruct a high-resolution surface model of the to-be-reconstructed space; and replacing the corresponding part of the preoperative full-liver tissue accurate three-dimensional surface model with the generated high-resolution surface model of the to-be-reconstructed space. Compared with the prior art, the application solves the problems of high time complexity, high computing power requirement and incapability of dynamic monitoring of a local region in the prior art, realizes rapid reconstruction of a liver tissue surface of a surgical area in operation, and achieves the purpose of dynamic monitoring and auxiliary accurate resection in operation.

The invention relates to a surgical instrument three-dimensional reconstruction and calibration method based on pixel engraving, and provides a real-time calibration system, which comprises a position sensing pattern arranged on a surgical instrument and used for assisting reconstruction and positioning of the surgical instrument; the visual positioning system is used for detecting a position sensing pattern on the surgical instrument and extracting the outline of the surgical instrument; the control system is used for detecting and recognizing position sensing pattern feature information, performing three-dimensional reconstruction on the surgical instrument, and acquiring and positioning the tip of the surgical instrument and the normal vector of the tip in real time; the real-time calibration system is used for three-dimensional reconstruction and registration of a surgical instrument in a preoperative preparation stage, and comprises incremental reconstruction of a non-planar three-dimensional model of a position sensing pattern, three-dimensional reconstruction of the surgical instrument, and calibration of a tip of the surgical instrument and a normal vector of the tip. According to the method, higher-precision and more reliable real-time navigation positioning can be provided for the surgical instrument.

The invention discloses an adjustable multi-angle precise puncture hook for pelvic floor reconstruction surgery, and relates to the technical field of medical instruments, the adjustable multi-angle precise puncture hook comprises a puncture hook body, the puncture hook body comprises a grab handle, a puncture straight part, a puncture bent part and a puncture part, the puncture straight part is installed at the top end of the grab handle, and the puncture bent part is installed at the top end of the puncture straight part; the puncture bent part and the puncture straight part are integrally formed and are hollow, the puncture part is installed at the top end of the puncture bent part, and the puncture part and the puncture bent part are connected through a steering mechanism; the puncture part comprises a puncture needle, a protection mechanism is arranged on the outer side of the puncture part, and a steering adjusting mechanism and a protection cover control mechanism are arranged on the surface of the grab handle. The steering mechanism is arranged between the puncture part and the puncture bent part, and the steering adjusting mechanism on the grab handle is combined, so that the angle of the puncture needle is flexibly adjusted; excessive traction or tissue damage caused by forcibly using a fixed-angle instrument is avoided; the blind penetration probability is reduced, and the probability that the mesh is accurately placed into the target ligament is improved.

The invention provides a porcine acellular dermal matrix for hip joint labial glenoid reconstruction as well as a preparation method and application of the porcine acellular dermal matrix, and belongs to the technical field of biomedical materials. Cleaning and incubating the natural pig dermis tissue; then treating by using a solution containing EDTA-pancreatin and a solution containing a surfactant in sequence; and finally, washing to obtain the porcine acellular dermal matrix. According to the invention, the porcine acellular dermal matrix is treated by a specific process and is used as a heterogeneous hip joint labial glenoid reconstruction material, and good biocompatibility and tissue guiding function are shown. Meanwhile, the preparation method is simple, the raw material source is wide, and the problem of graft source limitation in the existing hip joint laparolabial glenoid reconstruction operation is solved.

The coracoclavicular ligament reconstruction threading apparatus comprises a threading main rod, a threading head, a grab handle, a lead and a push head, the threading head is inserted into one end of the threading main rod, the other end of the threading main rod is connected with the grab handle, the threading main rod is provided with a first lead hole and a guide groove, the threading head is provided with a second clamping groove and a pin structure, and the push head is connected with the first clamping groove. The push head is slidably connected to the threading main rod and drives the threading head to slide, and the lead penetrates through the threading main rod and the grab handle and is fixed in the threading head; according to the threading device, accurate guiding and controllable sliding of the threading head can be achieved, the threading stability and precision are improved, a lead is fixed reliably and is not prone to falling off, an artificial ligament buckle is conveniently and stably clamped through a clamping structure, winding of the lead can be prevented through a storage structure, the operation safety is enhanced through the antiskid design of the grab handle, and traction control is facilitated through the hook; therefore, the threading efficiency and the operation convenience in coracoclavicular ligament reconstruction are effectively improved.

This invention discloses a device and method for chordae tendineae-assisted mitral valve reconstruction, belonging to the field of minimally invasive cardiac surgical instruments. It includes a gripping component, a pressure bar sheath, a pressure bar, and a fixation frame. The innovative aspects of this invention are as follows: Innovative procedures: The traditional steps are simplified to "temporary fixation → assessment → final fixation," significantly shortening the operation time and improving the success rate; Precise control: The locking component can lock or release the pressure bar in real time at the gripping end, achieving stepless adjustment of the chordae tendineae height and preventing suture slippage; Repeatable adjustment: The tension of the chordae tendineae can be repeatedly fine-tuned during the operation, and the closure of the valve leaflets can be verified immediately, eliminating the need for repeated loosening and threading of sutures; Economical and safe: The overall structure is simple, resistant to high-temperature and high-pressure sterilization, and reusable, without increasing disposable consumables or patient costs; Minimally invasive compatibility: Particularly suitable for small-incision mitral valve repair techniques; This invention has outstanding advantages in simplifying the operation process, improving fixation accuracy, and reducing medical costs, and can be widely applied to various mitral valve chordae tendineae reconstruction surgeries.

The invention discloses a sacrospinous ligament puncture magnetic attraction guide device, and relates to the field of medical instruments. The device comprises a connecting rod, a shell, an elastic steel wire and a puncture head, the shell is provided with a catheter and a detachable arc-shaped puncture tube; the elastic steel wire penetrates through the catheter and the puncture tube, and the feeding amount is adjusted through the pulley. And the puncture head is made of a magnetic conductive material. During use, the puncture head penetrates through the middle of the middle of the sacrospinous ligament through a rectum side gap, the connecting rod is inserted through a vagina side gap and is in magnetic butt joint with the puncture head, the wire is released to bring the puncture head out of the vagina, the traction wire and the puncture head are fixed, then the wire is collected, the traction wire is brought into the sacrospinous ligament, and the safety valve guarantees operation safety. The device does not generate extra cutting force on the sacrospinous ligament, solves the problems of high blind puncture risk, difficulty in threading, damage to the sacrospinous ligament and the like through magnetic guide and precise transmission, can accurately position a puncture head, realizes threading traction under in-vitro direct vision, is suitable for a gynecological pelvic floor reconstruction operation, and improves the operation safety and efficiency.

The invention provides a knee joint dynamic simulation method and system. The method comprises the steps that a pre-operation planning scheme and an intra-operation actual image are registered; based on the registration result and the currently planned tunnel site, dynamic simulation of the knee joint is carried out; and generating a dynamic simulation view based on a dynamic simulation result, and displaying the dynamic simulation view. According to the method, the knee joint in the operation is dynamically simulated through the registration result in the operation and the current tunnel site, so that the current operation plan is verified, and the accuracy of the whole anterior cruciate ligament reconstruction operation is greatly improved.

The utility model relates to the technical field of oral and maxillofacial surgical medical instruments, and particularly discloses a maxillary bone total resection bone reconstruction operation synchronous implantation navigation implantation structure which comprises an implantation support, a navigation positioning hole, a navigation positioning hole, a navigation positioning hole, a navigation positioning hole and a navigation positioning hole. The guiding stent is matched with the implanting stent, and a tissue supporting space is formed between the guiding stent and the implanting stent; and the positioning target nail is matched with the navigation positioning hole and is used for providing a positioning base point. According to the scheme, the neck position of the positioning target nail is selected on three-dimensional modeling to serve as a mark point, the position relation during navigation is established through a space registration algorithm, planting site deviation caused by fibula implant fixing deviation is reduced, and drill point reaming and stent implantation are guided in real time under high precision in the maxilla total resection bone reconstruction operation; the 3D printed PEEK material implantation stent is adopted to replace the cut maxillary bone and part of the cheekbone, and the guide stent is used for providing support for fixation of the fibula implant, so that not only is the stability of the reconstruction structure ensured, but also the surgical operation and the postoperative recovery strategy are optimized.

1. The name of the design product: auxiliary device for cruciate ligament reconstruction rehabilitation. 2. The use of the design product: medical equipment designed for patients after cruciate ligament reconstruction surgery of the knee joint, helping patients stabilize the knee joint during rehabilitation, reduce pain, and promote the recovery of joint mobility and muscle strength. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.