1279results about How to "Reduce surgical risk" patented technology

The invention provides a staple cartridge assembly of a disposable intracavity cutting and edge incising anastomat. The staple cartridge assembly comprises a staple cartridge, a staple cartridge base and a staple butting plate, wherein the staple cartridge is arranged in the staple cartridge base, a cutting slot is formed in the middle of the staple cartridge, multiple rows of suturing staple slots are formed in two sides of the cutting slot in the staple cartridge, staple pushing piece groups corresponding to the suturing staple slots are arranged in the staple cartridge seat below the staple cartridge, tissue pressing block slots are further formed in the staple cartridge on one side of the cutting slot and are located on the staple cartridge between one row of suturing staple slots on the innermost layer and the cutting slot, tissue pressing structures are arranged on the staple pushing piece groups and / or staple butting plate corresponding to the tissue pressing block slots, and the tissue pressing structures are tissue pressing blocks at certain heights. With the adoption of the tissue pressing structures, pathological frozen sections after an operation can be made while complete tissue is reserved, the stability of the tissue during the operation can also be guaranteed, blood vessel breakage is reduced, and the operation risk is reduced.

The invention relates to a method for preparing a small intestinal submucosa (SIS) soft tissue repair patch, and the soft tissue repair patch prepared by the method. The invention also relates to application of the soft tissue repair path to tissue repair.

The invention discloses a microcirculation resistance index calculation method based on a radiography image and a hydrodynamics model. The method comprises steps of selecting coronary artery images oftwo positions to carry out segmentation so as to obtain a coronary artery center line and a diameter; generating a coronary artery three-dimensional mode; acquiring blood conduction time Tmn and thespeed; establishing a blood vessel three-dimensional network; based on the coronary artery center line and the diameter of the X-ray reconstruction, generating an axially symmetrical two-dimensional plane mode; then, establishing two-dimensional axially symmetrical grids; measuring aorta mean blood pressure Pa; based on the obtained blood flow speed and the generated blood vessel three-dimensionalnetwork, solving fundamental formula of incompressible flows, and calculating the pressure drop deltaPi of each point from the entrance to the downstream along with the blood vessel center line, wherein the coronary artery far-end artery pressure Pd=Pa-deltaPi; and calculating the microcirculation resistance index IMR=Pd*Tmn. According to the invention, there is no need to carry out measurement through pressure guide wires, so operation is simple; operation difficulty and risk are greatly reduced; and the method can be clinically promoted and applied in large scale.

The invention relates to a microscopic surgical operation navigation system based on augmented reality and a navigation method. The navigation system comprises a fixing frame, a graph mark, a camera, a controller and display equipment, wherein the fixing frame comprises a foundation, a connection member, a fixing rod and a supporting board. The navigation method comprises steps that, S1, the fixing frame is fixed on an ill body; S2, the fixing frame and the ill body are scanned through a CTA, and a three-dimensional model is reconstructed; S3, a three-dimensional coordinate of the three-dimensional model is adjusted through software 3ds MAX to make the graph mark be at the world coordinate center; and S4, the three-dimensional model is projected by ARToolkit software onto a right center of the graph mark, so the three-dimensional model and the ill body image are superposed and fused. The system and the method are advantaged in that, the augmented reality technology is utilized, so the real world information, namely the ill body, is superposed and fused with virtual world information, namely the three-dimensional model of blood vessel muscle bones, so entity information which is difficult to experience in the real world can be acquired by operation doctors.

The invention discloses an artificial cardiac valve and a valve bracket for the same. The valve bracket is an elastic bracket which can be axially contracted, and is hollowed. U-shaped openings are formed in a manner opposite to valve leaflets in the valve bracket. By the hollowed valve bracket with the U-shaped openings, integral metal structures of the cardiac valve are greatly reduced to facilitate the loading and recovery of intervention and implantation and reduce the repellence of a human body to an implantable appliance.

The invention provides a cardiovascular interventional virtual surgery simulation system based on force feedback. The cardiovascular interventional virtual surgery simulation system comprises a displacement collecting unit, a force feedback mechanism, a motor driver, a processor and a computer, wherein the displacement collecting unit comprises a guide wire displacement collecting unit, a balloon catheter displacement collecting unit and a guiding catheter displacement collecting unit; and the force feedback mechanism comprises a guide wire force feedback mechanism, a balloon catheter force feedback mechanism and a guiding catheter force feedback mechanism. The cardiovascular interventional virtual surgery simulation system is used for simulating the movement sense and the force sense in the process of inserting guide wires, catheters and the like in vascular intervention therapy. The surgery accuracy is high, the repeatability is good, the training cycle of doctors can be shortened, and the surgical risk is reduced.

The invention provides a robot-assisted system and method for controlling a flexible needle to puncture soft tissues in real time, belonging to the technical field of medical equipment for minimally invasion surgeries (MIS). The system comprises a flexible needle puncture device, a driving device, a mechanical sensor, a data acquisition card and a computer, wherein the computer comprises stepping motor movement control software, force signal processing software and a flexible needle control algorithm. The method is used for realizing needle puncture movement through the following steps: regarding puncture process as a quasi-static process and any needle section as a cantilever, wherein each needle section is described by vector and is regarded as a cantilever; computing the deflection and cross section rotating angle of the needle section according to the theory of cantilever; and computing the positions of the needle body and the needle point in real time by iteration. According to the invention, real-time adjustment of the position of the needle body in the process of puncture is realized, thus effectively keeping away from the barriers in the process of puncture and precisely hitting the target; and further the degree of fatigue of the doctors is reduced, pains of the patients are alleviated, and the surgery risks are reduced.

The invention discloses a navigation system and method of a minimally invasive surgery. The navigation system comprises a composite endoscope body, a spatial positioning device and a surgery navigation server. The method comprises the steps that preoperative diagnostic images are subjected to three-dimensional model reconstruction and preoperative planning before navigation is performed; during the navigation, three-dimensional optical image signals and two-dimensional ultrasonic image signals of intraoperative organs and tissue are simultaneously acquired and three-dimensional reconstruction is performed, a three-dimensional model of the preoperative diagnostic images with preoperative planning information is subjected to organ and tissue deformation correction, and a three-dimensional optical model and a dynamic preoperative registration model are subjected to registration and fusion, so that the functions of optical navigation and ultrasonic navigation are simultaneously achieved, the intraoperative optical navigation can be switched to the intraoperative ultrasonic navigation continuously in real time, and a key position point, an optimum surgical entry point and an internal travel path of the intraoperative organs and tissue are continuously achieved in all dimensions from surfaces of organs and tissue to inner structure of organs and tissue. The navigation system and method of the minimally invasive surgery overcomes the defect of relatively single and discontinuous functions existing in the prior art, and is capable of lowering surgical risks.

The invention is suitable for the technical field of virtual surgeries and provides a kidney virtual surgical method and system. The kidney virtual surgical method comprises the following steps of A, performing computerized tomography (CT) scanning on a patient at a preset position to obtain CT scanning data of the patient; B, respectively extracting a plurality of tissues and / or organs relevant to the kidney of the patient from the CT scanning data of the patient; C, performing three-dimensional geometrical model reconstruction on the plurality of tissues and / or organs and establishing a three-dimensional special relation among the plurality of tissues and / or organs; and D, according to the three-dimensional special relation, determining the puncture angle and depth on the skin of the patient to establish a channel from the skin of the patient to the kidney of the patient. Therefore, by means of the kidney virtual surgical method, the accurate channel at the waist of the patient from the skin to the kidney can be established, and a virtual surgery can be operated on the patient.

The invention relates to an intracranial puncture locating method based on mixed reality and belongs to the field of neural imaging navigation. The method includes the steps of firstly, collecting CTscanning data of a patient with a marker, and creating three-dimensional models of the head and intracranial lesions of the patient according to the CT data; determining puncture targets, a puncture direction and puncture depth on the basis of the three-dimensional models, and creating an intracranial puncture path; finally, through rigid registration, overlapping the three-dimensional model of the head and the puncture path on a surgical part of the patient through a mixed reality technology, so that a surgeon can conduct puncture surgery under the guidance of the virtual three-dimensional models and correct puncture operation in real time according to the puncture path. Since the virtual three-dimensional modules are totally matched with a real scene, the virtual puncture patch is highlymatched with an actual situation, and therefore by conducting the puncture operation along the virtual puncture path, deviations or faults existing in traditional empirical operation are effectivelyavoided so that the purpose of improving the intracranial puncture precision and puncture efficiency can be achieved.

The invention discloses a supervoxel sequence lung image 3D pulmonary nodule segmentation method based on multimodal data. The method comprises the following steps: A) extracting sequence lung parenchyma images through superpixel segmentation and self-generating neuronal forest clustering; B) registering the sequence lung parenchyma images through PET / CT multimodal data based on mutual information; C) marking and extracting an accurate sequence pulmonary nodule region through a multi-scale variable circular template matching algorithm; and D) carrying out three-dimensional reconstruction on the sequence pulmonary nodule images through a supervoxel 3D region growth algorithm to obtain a final three-dimensional shape of pulmonary nodules. The method forms a 3D reconstruction area of the pulmonary nodules through the supervoxel 3D region growth algorithm, and can reflect dynamic relation between pulmonary lesions and surrounding tissues, so that features of shape, size and appearance of the pulmonary nodules as well as adhesion conditions of the pulmonary nodules with surrounding pleura or blood vessels can be known visually.

The invention relates to a functionalized implantable flexible electrode and an application thereof. The functionalized implantable flexible electrode at least comprises a function layer capable of generating a current or voltage. In the invention, through adopting the function layer which can generate the current or the voltage via triggering, the flexible electrode does not need complex line connection and device packaging and the function of a nerve stimulation device can be realized so that an operation risk and the safety risk of long-term implantation are greatly reduced, and the application field of the nerve stimulation device is expanded. The invention also provides the applications of the above functionalized wide-width implantable electrode in manufacturing an implantable artificial retina, an implantable artificial cochlea, an implantable cardiac pacemaker, and an implantable deep brain stimulator.

The invention relates to a DTI (Diffusion Tensor Imaging)-based cranial nerve fiber bundle three-dimensional rebuilding method and a method of manufacturing a head three-dimensional model comprising nerve fiber bundles based on a 3D printing technology. The method comprises the following steps: magnetic resonance scanning is carried out on a target tissue area and surrounding nerve fiber bundles to acquire MRI image data for the target tissue area comprising the nerve fiber bundles; DTI processing and related processing are carried out on the acquired MRI image to acquire an MRI image with an identifiable nerve fiber bundle; calculation is carried out on X-axis information, Y-axis information and Z-axis information of the MRI image with the identifiable nerve fiber bundle, three-dimensional rebuilding is carried out via mimics software, and a three-dimensional mode comprising the cranial nerve fiber bundle is acquired. Through the three-dimensional model and the 3D printing three-dimensional solid model, the position relation among an anatomic structure, a brain function area and each tissue can be displayed clearly, a solid model is provided for an operation, and the method is used for operation approach design and operation simulation.

The invention relates to an individuation minimal invasive vertebral pedicle screw entering navigation template and a preparation method of the navigation template. The preparation method of the navigation template includes: reconstituting a three-dimensional model of a target vertebra based on a medical image; conducting the screw entering porous channel virtual analysis design on the three-dimensional model and defining a screw entering porous channel; taking feature points from the three-dimensional model, designing a vertebral pedicle screw entering navigation template prototype and obtaining a navigation template which fully fits for the vertebral body through the Boolean calculation; and manufacturing the navigation template through 3D printing and other processing methods. The individuation minimal invasive vertebral pedicle screw entering navigation template closely fits for the mastoid process and the lamina arcus vertebrae, is high in stability, ensures accurate implanting of the vertebral pedicle screw, avoids direct contact with the spinous process, reduces peeling of the muscle ligament, realizes minimal invasion, is applicable to various situations such as the vertebral distortion and slipping and the rupture of the vertebral pedicle, prevents slipping and distortion during screw entering due to the arrangement of a finger pressing board, and is convenient to operate and low in the requirement for doctors, degreases the operation risk, improves the operation efficiency and reduces the operation cost further.

The invention discloses a body model thermal manikin system. The system is a test system which can simulate thermal response of a human body at a high temperature, can simulate the processes of heat absorption of the human body, heat conduction among different tissues, heat production, heat regulation, blood heat convection, body surface thermal radiation and sweating, and is used for medical assessment, aviation, performance analysis for a fire hazard and a high temperature environment, human comfort, fabric assessment and environmental measurement. The system comprises the human body thermal body model and a multi-branch blood circulation simulation system, wherein the human body thermal body model has a layered and sectioned body model structure; each layer and each section adopt materials which are similar to human biological tissue thermal characteristics corresponding to the layer; each layer and each section have different thermal physical property parameters; and the multi-branch blood circulation simulation system comprises a power source and a circulation line which is provided with flowing liquid; and the circulation line comprises a multi-caliber arterial system, a multi-caliber venous system, a control valve and a three-way or multi-way pipe for connection.

The invention relates to a double-layer titanium mesh for cranioplasty, which is characterized by comprising an inner-layer titanium mesh and an outer-layer titanium mesh, wherein the outer-layer titanium mesh coincides with the defective edge on the outer surface of the cranial bone; the curvature of the outer-layer titanium mesh conforms to the appearance of the head; the gap between the inner-layer titanium mesh and the outer-layer titanium mesh is filled with autologous bone granules or artificial bone granules; the outer-layer titanium mesh comprises a scalp contact surface and fixed-end grooves; the curvature of the outer-layer titanium mesh conforms to the outer surface of the skull; the edge of the outer-layer titanium mesh coincides with the defective edge on the outer surface of the cranial bone; the outer-layer titanium mesh is fixed on the defective position on the outer surface by screws, so that the outer surface of the cranial bone can be closed; and the outer-layer titanium mesh is provided with holes. The titanium mesh can simultaneously repair the inner surface and the outer surface of the cranial bone, thereby realizing full anatomical and functional recovery and avoiding the brain tissue damage caused by inner surface defects.

The invention discloses a real-time evaluation and correction method in a spine posterior approach operation. Each segment of the spine is divided by an X ray photo and is matched with each corresponding segment of a 3D model which is constructed by CT (Computed Tomography), rigid body transformation is estimated, and thus a rectification result can be obtained; on the basis, the whole spine is spliced, a real-time three-dimensional spine form of a patient on an operating table is reconstructed, an operation effect is estimated in real time, the orientation for placing a nail is corrected in time, the incorrect nail placement in an operation is remedied, the operation risk is reduced, and the success rate of the operation is improved. According to the method, the spine segments belong to rigid bodies, the whole spine belongs to a non-rigid body, and 2D / 3D images of a non-rigid body joint target are subjected to registration; the 3D positions of a pedicle screw is estimated by 2D images, and the 3D form of the spine of the patient after operation nail placement is reconstructed; the problems that visual real-time monitoring and correction lacks in the existing spine posterior approach operation, and the danger existing in the operation is not remedied in time are solved.

The invention belongs to the technical field of surgical auxiliary tools, and particularly discloses a surgical auxiliary support frame for ophthalmologists. By the aid of the surgical auxiliary support frame, the problem of easiness in shaking due to the sense of fear of patients in eye surgery can be solved. The scheme includes that the surgical auxiliary support frame comprises a bottom plate;a headrest is connected with the center of the top of the bottom plate by bolts, side plates are vertically arranged at two ends of the bottom plate, fixing plates are welded at two ends of the bottoms of certain sides of the two side plates, the certain sides of the two side plates are far away from each other, and electric push rods which are horizontally arranged are connected with the centersof the tops of the two side plates by bolts. The surgical auxiliary support frame has the advantages that the heads of patients can be fixedly clamped by the two electric push rods by the aid of memory sponge mats and can be prevented from shaking in surgery procedures; music can be played by a music player in the surgery procedures, accordingly, nervous mental states of the patients can be eased,and the surgical auxiliary support frame is beneficial to smoothly carrying out surgery on the patients; the eyes of the patients can be illuminated by supplement light by the aid of illumination lamps, accordingly, the surgery can be conveniently smoothly carried out by the ophthalmologists, and eye surgery risks of the ophthalmologists can be reduced.

The invention relates to a 3D printing-based personalized cranial particle implantation guide system, including a head-fixed vacuum pad, particle implantation planning software, a personalized skull perforation template, a personalized particle implantation puncture template, template making and Printing software, 3D printer. The skull perforation template of the present invention is used in conjunction with the particle implantation puncture template, so that the intersection point of each particle implantation needle body is at the perforation of the skull, and the puncture needle passes through the skull smoothly, and the particle implantation needle column of the template can accurately guide the puncture needle. The puncture direction avoids blood vessels and important central nerves, accurately punctures to the lesion, reduces the difficulty of the operation, shortens the operation time, and reduces the risk of the operation.

The present invention relates to aortic arch three collateral support blood vessels comprising an aorta support vascular that comprises an aorta ascenden section, an aortic arch section and an aorta section; the aorta support vascular also comprises three collateral artery support vasculars which are fixed respectively on an aortic arch section arc surface of the aorta support vascular and are formed into an five-way type. The three collateral artery support vasculars are corresponding respectively to an arteria anonyma, a left common carotid artery and a left subclavian artery. The invention is capable of greatly simplifying an operation process and greatly shortens the time of a deep hypothermia and a circulation arrest, which is characterized by not only omitting an inosculation between an artificial vascular graft and three branches of the aortic arch but also reducing bleeding rate and operation risk. In an operation, the invention changes an operation method from a partial blood vessel replacement plus partial endovascular repair to a complete endovascular repair.

The invention provides an atlantoaxial pedicle screw guide and a preparation method therefor. The method is that a hospital PACS (picture archiving and communication system) system obtains atlantoaxial fracture data or CT (computed tomography) scan data of cervical dislocation of a patient; based on the data, and a 3D design and print work platform of digital visualized orthopedics is used for designing and preparing the atlantoaxial pedicle screw guide. The atlantoaxial pedicle screw guide and the preparation method therefor has the advantages of being high in accuracy, easy to operate and low in cost. Furthermore, the atlantoaxial pedicle screw guide and the preparation method therefor is capable of making complex and high-risk atlantoaxial fixation surgery accurate, safe and easy to operate under the accurate guide of the guide, surgery accuracy is greatly improved, and the risk of the surgery is reduced.

The invention discloses a preparation method of medical porous titanium or titanium alloy materials coated with tantalum coatings on surfaces, which includes the following steps: firstly, preparing aporous titanium frame or a porous titanium alloy frame by adopting the 3D printing method; next etching the porous titanium frame or the porous titanium alloy frame, and cleaning and drying; then totally embedding the porous titanium frame or the porous titanium alloy frame in ultrafine tantalum powder in metal canning, vacuum sealing and diffusion sintering in low temperature; lastly taking out the frame, removing the powder and obtaining the medical porous titanium or titanium alloy materials coated with the tantalum coatings on surfaces. The preparation method of the medical porous titaniumor titanium alloy materials coated with the tantalum coatings on surfaces has the advantages that through embedding in powder and diffusion sintering in low temperature, tantalum coats the surfaces of the porous titanium frame or the porous titanium alloy frame, and metallurgical bonding is formed, thereby greatly enhancing the bonding force between tantalum and the surface of the porous titaniumframe or the porous titanium alloy frame, solving the difficulty of poor bonding force between the tantalum coatings and matrix, and overcoming the disadvantages of high cost and complicated processof the prior preparation method.

The invention discloses an artificial chordae implantation system provided with a detection device. The artificial chordae implantation system comprises a clamping device, a puncture device, a push device and a detection device, wherein the push device comprises a push catheter; the clamping device comprises a clamping push rod in which an artificial chordae is accommodated as well as a distal clamping head and a proximal clamping head which are cooperated for clamping a valve leaflet; the detection device comprises at least one probe; the probe is movably inserted into the push catheter; a detection outlet is kept in the clamping surface of the proximal clamping head or the distal clamping head, and correspondingly, a probe accommodating cavity, which is opposite to the probe outlet, is kept in the clamping surface of the distal clamping head or the proximal clamping head; and the distal end of the probe is accommodated in the probe accommodating cavity from the probe outlet when thedistal clamping head and the proximal clamping head are closed. According to the artificial chordae implantation system provided by the invention, it can rapidly and accurately detect whether the valve leaflet is clamped between the distal clamping head and the proximal clamping head or not via the detection device of a mechanical structure; the system is simple in structure, simple and convenientto operate and low in surgical risk; and the system can reduce production cost of apparatuses and reduce economic burdens of patients.

The present invention relates to a microwave radiation antenna capable of making percutaneous puncture to cure tumor of several regions of human body. Said invention is formed from antenna connector, hard coaxial line, ceramic tube, water inlet tube, water outlet tube, temperature-measuring system, stainless steel sleeve and handle. Its output power can be up to above 100w, and is therapeutic effect is reliable and safe.

The invention belongs to the field of bone surgery osteotomy orthotics devices, and particularly relates to a computer-aided design orthopedics department osteotomy, orthotics and immobilization integrated guide plate and a manufacturing method. The manufacturing method comprises the following steps: collecting bilateral bone data, and establishing a bilateral bone three-dimensional model; if a patient has an uninjured side limb, taking an uninjured side mirror model as a reference to determine an osteotomy angle and an osteotomy position, and performing orthotics and immobilization on an affected side; if a patient has no uninjured side limb for reference, performing osteotomy and orthotics on the affected side according to a normal structure and functional parameters, thus obtaining an angle needing to be corrected and a corresponding osteotomy angle, and achieving orthotics and immobilization; manufacturing the guide plate according to the osteotomy position, a position of an implanted steel plate and the like. The computer-aided design orthopedics department osteotomy, orthotics and immobilization integrated guide plate has the beneficial effects that by applying the guide plate, osteotomy, orthotics and immobilization are achieved in one step, immediate correction is realized, fluoroscopy during operation is not needed, operation time is shortened while radiation injury to the patient and doctors is reduced, risks such as bleeding and anesthetic accidents are reduced, the operation of orthopedics department osteotomy and orthotics is simplified, and operation accuracy is improved.

The invention discloses a sheath-core for conveying an interventional device and a conveying system with the sheath-core. The sheath-core comprises a core tube, wherein a guiding tip and an interventional device fixing tip are fixed at the far end of the core tube, a mounting section for accommodating a device to be implanted is arranged on the core tube between the guiding tip and the implanting device fixing tip; a tube wall thickening layer is arranged on the periphery of the mounting section. The conveying system comprises a sheath tube, and the sheath-core which is arranged in the sheath tube and used for conveying the interventional device. The sheath-core for an interventional operation can be used for preventing the conveying system from bending in the forwarding process, and is high in safety. According to the conveying system, the bending direction controllability of the far end of the sheath tube can be improved, and a doctor can conveniently bend the far end of the sheath tube and move the far end of the sheath tube to a target direction or site through a traction wire, so that the operation difficulty can be lowered.

The invention relates to a six-degree-of-freedom cervical-vertebra grinding parallel robot which relates to a grinding parallel robot. The invention aims to solve the problems of insufficient precision, overmuch radiation and large doctor working strength of a traditional manual cervical intervertebral-disc replacement operation. A fixed platform and a movable platform are connected through three pairs of branched chains, a spherical hinge mechanism is arranged at the upper end of a ball-screw linear driving mechanism, a hooker hinge mechanism is arranged at the lower end of the ball-screw linear driving mechanism, the spherical hinge mechanism is connected with the movable platform, the hooker hinge mechanism is connected with the fixed platform, an abrasive-drilling motor penetrates the movable platform, the abrasive-drilling motor is fixedly connected with an abrasive-drilling motor connecting body, the abrasive-drilling motor connecting body is fixedly connected with the movable platform, an abrasive-drilling body is fixedly installed on the abrasive-drilling motor connecting body, an abrasive-drilling jackscrew hole is arranged on the abrasive-drilling body, an abrasive-drilling jackscrew hole cover is installed on the abrasive-drilling jackscrew hole, an abrasive-drilling shaft is connected with the abrasive-drilling motor through a shaft coupler, and a cutting head is connected with the abrasive-drilling shaft through a tightening nut. The invention is applicable to the grinding of cervical vertebra.

The invention provides a method for preparing a porous tantalum medical implant material based on an electron beam selective melting technology. The method comprises the steps that firstly, software is utilized for reconstructing a two-dimensional medical CT image or MRI data, and a three-dimensional model of the porous tantalum medical implant material is obtained after structure optimization andsupporting addition processing are conducted on a three-dimensional rough model; and secondly, selective melting is conducted on tantalum powder by adopting electron beams according to shearing-layerdata of the three-dimensional model of the porous tantalum medical implant material, and then the porous tantalum medical implant material is obtained. According to the method for preparing the porous tantalum medical implant material based on the electron beam selective melting technology, the tantalum powder is melted and formed under the vacuum condition, and no additive is contained in the tantalum powder, so that the oxidation phenomenon after heating of tantalum is avoided, contamination of impurity elements such as carbon and oxygen is reduced, the requirement of the customized poroustantalum medical implant material is met, and meanwhile biological stability and biological compatibility of the porous tantalum medical implant material are improved. Post-processing processes such as sintering and annealing do not need to be conducted on the obtained porous tantalum medical implant material, and the method is convenient and efficient.

The invention discloses a surgical navigation system, which comprises a space positioning and marking element on a surgical instrument, a tracer on a skeleton structure, a binocular camera and a computer, wherein the tracer is provided with a navigation tracing surface; the space positioning and marking element comprises navigation surfaces; and the binocular camera is connected with the computerand transmits collected information of the tracer and the space positioning and marking element to the computer. Computer programs are separately stored into the computer and a computer-readable storage medium. A surgical navigation method is performed and comprises the steps of generating a three-dimensional model of a skeleton and a three-dimensional model of the surgical instrument and obtaining tracer registration information and calibration information of the space positioning and marking element; receiving real-time information, collected by the binocular camera, of the tracer and the space positioning and marking element; and calculating space position information of the skeleton and the surgical instrument, and carrying out real-time fusion on the space position information and thethree-dimensional models to obtain a dynamic image of a real-time position relationship between the skeleton and the surgical instrument. According to the surgical navigation system, surgical navigation is achieved and intraoperative registration is not needed, so that the surgical process is simplified and the surgical accuracy is improved.

A universal vertebral body reduction device for orthopedic vertebral column surgery comprises a first reduction bar and a second reduction bar. The first reduction bar and the second reduction bar are connected via a connecting device, a first universal joint is fixedly welded or sleeved on the first reduction bar, and a second universal joint is fixedly welded or sleeved on the second reduction bar; one end of the connecting device is fixedly welded or inserted in the first universal joint, and the other end of the connecting device is adjustably connected into the second universal joint via a fastening device; and bottom ends of the first reduction bar and the second reduction bar are respectively fixedly connected with a first clamping device and a second clamping device which are used for being connected with an orthopedic internal fixing apparatus. The universal vertebral body reduction device is a surgical instrument which is simple and labor-saving in operation, fast and reliable in temporary fixation, and sophisticated and accurate in surgical reduction, and can meet orthopedic clinical requirements of temporary fixation and surgical reduction between bone fracture sections.