17 results about "Surface replacement" patented technology

The invention relates to the technical field of medical instruments, in particular to a hip joint thighbone prosthesis and a hip joint thighbone prosthesis manufacturing method. The hip joint femoral prosthesis comprises a spherical prosthesis main body and a connecting part, the spherical prosthesis main body is provided with an opening, one end of the connecting part extends into the spherical prosthesis main body and is connected with the spherical prosthesis main body, and the other end of the connecting part extends out of the opening; wherein the inner wall of the spherical prosthesis main body is provided with a functional gradient porous structure, and the porosity and the pore diameter of the functional gradient porous structure are gradually increased from the inner wall of the spherical prosthesis main body to the center direction of the spherical prosthesis main body in the preset direction. According to the hip joint thighbone prosthesis, the service life of a surface replacement type hip joint thighbone prosthesis can be prolonged, the problem that an existing biological fixation type prosthesis is loosened and loses efficacy due to stress shielding is solved, and the risk that a porous structure is prone to falling off from a base body in a long-term load environment is reduced.

The invention provides a femoral head surface replacement prosthesis assembly. The femoral head surface replacement prosthesis assembly comprises a joint part, the joint part comprises a spherical main body and a base, the base comprises a side wall and a bottom wall, the bottom of the spherical main body is connected with the side wall of the base, the spherical main body and the base jointly define an inner cavity of the joint part, and at least two first through holes communicated with the inner cavity are formed in the side wall of the base. According to the technical scheme, the femoral head surface replacement prosthesis assembly can solve the problems that due to the fact that an existing femoral head surface replacement prosthesis is too heavy, a patient feels obvious foreign body sensation after an operation, and the use comfort of the patient is poor.

The present disclosure provides an implant, a corresponding method of implantation, and a method of using the same that can be used in orthopaedic joint replacement arthroplasty or hemiarthroplasty and / or an orthopaedic joint resurfacing arthroplasty or hemiarthroplasty. The implant can include a fin portion for receipt in a corresponding slot formed in bone, and the fin portion can support an articulation portion that can be used in resurfacing and replacing portions of articulation surfaces of a joint.

The present disclosure provides an implant, a corresponding method of implantation, and a method of using the same that can be used in orthopaedic joint replacement arthroplasty or hemiarthroplasty and / or an orthopaedic joint resurfacing arthroplasty or hemiarthroplasty. The implant can include a first fin portion and a second fin portion for receipt in a first slot and a second slot, respectively formed in bone, and the first fin portion and the second fin portion can support an articulation portion that can be used in resurfacing and replacing portions of articulation surfaces of a joint.

The utility model discloses a rainwater mold surface layer replaceable structure which comprises a main body unit which comprises a rainwater shallow storage layer, and six side face pressure-resistant plates are evenly and fixedly arranged on the inner walls of the left end and the right end of the rainwater shallow storage layer. The replacing unit comprises a plurality of fixing panels fixedly connected to the inner wall of the top end of the rainwater shallow storage layer, and two fixing plates are fixedly arranged on the bottom faces of the two fixing panels. By starting the motor, the rotating rod drives the connecting frame to conduct angle deflection, the connecting plate B drives the movable panel to move up and down through the hinging effect of the connecting frame, the connecting plate A and the connecting plate B and the limiting effect of the limiting assembly, the rainwater mold surface layer main body is jacked up when disassembled and replaced, and the rainwater mold surface layer main body is disassembled and replaced. And a new rainwater mold surface layer main body can be quickly disassembled and replaced, so that the problems that the replacement is troublesome and the inner wall of the old rainwater mold surface layer main body is blocked to influence rainwater drainage during long-term use are solved.

The utility model belongs to the technical field of bolt jigs, and particularly relates to a bolt chamfering positioning jig which comprises a base and a support. The annular frame and the toothed ring frame are located at the left end and the right end of the base, a support is circumferentially installed in the space between the annular frame and the toothed ring frame, and an electric rotating part is arranged on the inner side of the lower end of the toothed ring frame to drive the toothed ring frame to rotate, so that the support is driven to rotate to replace bolts before and after machining in batches; a positioning sleeve is installed in the support and used for installing bolts in batches for machining. And the positioning shaft is located at the axis of the adjacent supports, and a top plate is installed above the positioning shaft through an electric expansion piece and used for controlling the bolt installation height. The bolt chamfering device can be used for continuously chamfering bolts in batches, the effects of angle inclination, direction adjustment and machining surface replacement are realized during batch machining, the operation is simple, and the overall machining time consumption is shortened at the same time.

The present invention belongs to the field of biomedical information analysis technology, and specifically relates to an integrated device for duodenal mucosal surface replacement and electrotransfection and a method for operation based on parameter feedback. The present invention first provides an integrated device for duodenal mucosal surface replacement and electrotransfection, which includes an endoscopic guidance module, a radiofrequency ablation module, an electrotransfection module, and an intelligent terminal control module. The present invention also provides a method for operating a DMR-EP integrated device based on tissue parameter feedback. The present invention proposes for the first time the realization of individualized strategy generation and data-driven treatment path selection in local gene therapy after DMR surgery, which significantly improves the safety, effectiveness, and breadth of indications of the treatment.

The application discloses a shoulder peak-humerus head joint surface replacement prosthesis, which comprises a shoulder peak side prosthesis and a humerus head side prosthesis. The shoulder peak side prosthesis is suitable for being inserted into a shoulder peak under gap and has a fixing wing which is suitable for being inserted into the upper part of a distal end of a clavicle through a sternoclavicular joint and fixedly connected with the clavicle. The humerus head side prosthesis is configured to adapt to the arc shape of the top of a humerus to correspond to the shoulder peak fixed on the top of the humerus head. The upper surface of the humerus head side prosthesis is in abutment with the lower surface of the shoulder peak side prosthesis to replace the contact between the shoulder peak under bone surface and the top of the humerus head. The shoulder peak side prosthesis and the humerus head side prosthesis are used to realize surface joint replacement, replace the use of RSA in patients with huge unreparable rotator cuff injury and Hamada greater than or equal to 3, solve the problem of heavy deltoid load caused by RSA, retain the bone mass of the glenoid and the humerus head due to the surface replacement mode, retain the space for RSA revision in subsequent treatment, and are suitable for young (less than 65 years old) patients.

The utility model belongs to the technical field of sports shoes net surface replacement, and disclose a kind of replaceable net surface sports shoes, recess is set in the inside of the front end surface of the sports shoes body, the inside of the recess is attached and is equipped with net surface, the left and right sides of the net surface are fixedly provided with fixed block, the lower end surface of the fixed block is fixedly provided with magic tape one, the left and right sides of the recess are equipped with vertical groove in the middle, the inside upper side of the vertical groove is fixedly provided with magic tape two, and magic tape one and magic tape two are mutually pasted and fixed, the inside middle of the vertical groove is equipped with magnetic attraction groove, by magic tape, fixed block and magnetic attraction column, magnetic attraction groove, using them can realize the quick connection and separation of net surface, it is convenient according to different scene, requirement or preference, quickly replace the net surface of sports shoes, and they have better durability, wear resistance, not easy to be deformed or broken, can withstand multiple use and repeatedly open and close, extend the overall service life of shoes.

The invention discloses a TPMS-based bone scaffold topological structure for treating femoral head necrosis and an implantation method thereof, and relates to the field of bone scaffold topological structures. The stent comprises a stent main body structure, and the stent main body structure sequentially comprises a first stent cortical bone area, a stent cancellous bone area, a second stent cortical bone area and a stent'double cortical bone fixation 'femoral shaft penetrating area from top to bottom. The first stent cortical bone area, the stent cancellous bone area and the second stent cortical bone area are all subjected to structural topological optimization by utilizing TPMS. The invention provides a novel implantation mode by combining a three-period minimal curved surface (TPMS) topology optimization bone scaffold structure and fusing surface replacement and medullary core decompression, and solves the problems of insufficient mechanical support, poor structure biomimetic property, low implantation stability and the like of the existing bone scaffold. More accurate mechanical adaptation, better osseointegration effect and longer implant service life are achieved, so that caput femoris collapse is effectively delayed or avoided, and the requirement for artificial joint replacement is reduced.

The application relates to a removal method of a vane disc plasma impact absorption layer, which comprises the following steps: step 1, clamping the vane disc part; step 2, light output setting; step 3, adjusting the spatial position of the vane disc; step 4, setting process parameters, the laser cleaning process parameters including power, frequency, spot diameter and scanning speed; step 5, vane disc rotation feeding; step 6, laser cleaning; step 7, surface replacement cleaning; step 8, flow channel cleaning; step 9, supplementary cleaning; and step 10, part cleaning. The method greatly improves the removal efficiency, reduces the labor intensity of workers and improves the one-time qualified rate of the vane disc absorption layer removal.

The invention discloses a surgical tool for hip joint surface replacement, and relates to the technical field of surgical instruments, the surgical tool comprises a 3D-printed Scrib needle guider based on a preoperative CT model, a Scrib needle, a sleeve milling cutter, a first running stop ring, a second running stop ring, a plane milling cutter, a connecting piece and a bone drill, the Scrib needle guider is printed according to the specificity of a patient, the center of the femoral head can be accurately positioned, the first running stop ring is used for limiting the milling depth of the sleeve milling cutter, the second running stop ring is used for limiting the cutting depth of the plane milling cutter, and the bone drill is provided with the third running stop ring and scales, so that the drilling depth can be accurately controlled; according to the femoral head surface replacement device and method, accurate and safe operation of femoral head surface replacement is achieved, the bone mass of a patient is reserved, the prosthesis adaptation degree and fixing stability are improved, and reliable tool support is provided for the whole process of an operation.

The application relates to the technical field of spraying equipment, and particularly discloses a full-automatic aircraft part paint spraying production line, which comprises a base, a spraying structure, a carrying structure, a clamping structure and a hoisting structure; the base is H-shaped, the spraying structure is fixedly arranged on the rear end of the base, the carrying structure is fixedly arranged on the middle part of the base, the clamping structure is fixedly arranged on the carrying structure, and the hoisting structure is fixedly arranged on the front end of the base and corresponds to the clamping structure, so that the spoiler moving on the conveying belt body can be clamped and fixed through two mounting claws, and the spoiler can be turned over for surface spraying on the side with the mounting claws after spraying, without manual intervention for surface replacement; and after spraying, the spoiler is automatically placed on the hoisting structure through turning over of the spoiler, the hoisting assembly is driven to reciprocatingly rotate by the conveying belt in the hoisting structure, and the suspender is inserted into the mounting claw through hole of the spoiler for hanging.

The application provides a single ankle joint clinical operation surface replacement system and belongs to the field of medical instruments. The single ankle joint clinical operation surface replacement system comprises a lateral tibial tray, an intermediate pad and a lateral talus top. The top of the lateral tibial tray is provided with the intermediate pad. The side, away from the lateral tibial tray, of the intermediate pad is provided with the lateral talus top. The side wall, close to the lateral talus top, of the intermediate pad is concave. The surface of the lateral tibial tray is provided with connecting grooves on both sides. The end, close to the lateral tibial tray, of the intermediate pad is arranged with a connecting strip. The connecting strip is matched with the connecting grooves. The connecting strip is embedded in the connecting grooves. The inner wall edges of the connecting grooves are arranged with limiting grooves. The limiting grooves are embedded with a first shape memory polymer. After the fixed connection of the lateral tibial tray and the intermediate pad, the first shape memory polymer is expanded to fill the gap between the connecting strip and the connecting grooves to form a rigid connection, thereby improving the stability of the connection.

The utility model discloses a milling machine for metal flange plate processing, include: milling machine main part, the surface installation of milling machine main part has the lifting seat, and the upside of lifting seat is provided with milling cutter, the side of milling machine main part is provided with controller. The utility model discloses through placing metal flange plate on the surface of tray, then through the clamping unit and makes mobile seat to drive rotating rod to carry out the clamping fixed of metal flange plate, then through milling cutter to the corresponding bolt hole of metal flange plate surface processing, then through the rotation unit drive metal flange plate rotation, make the thread hole rotation of metal flange plate surface replacement, convenient milling cutter to the adjacent bolt hole processing, accelerate the processing speed.

This invention provides a femoral head surface replacement prosthesis assembly. The assembly includes an articular portion comprising a spherical body and a base. The base includes sidewalls and a bottom wall. The bottom of the spherical body is connected to the sidewalls of the base. The spherical body and the base together form an inner cavity of the articular portion. At least two first through holes communicating with the inner cavity are provided on the sidewalls of the base. This invention's femoral head surface replacement prosthesis assembly solves the problem of existing femoral head surface replacement prostheses being too heavy, causing patients to experience a significant foreign body sensation post-surgery and resulting in poor patient comfort.

The utility model discloses an interphalangeal joint surface replacement prosthesis which comprises a near-end phalanx surface prosthesis, and a near-end phalanx fixing part is arranged on the side portion of the near-end phalanx surface prosthesis and used for being fixed to the radial back side bone surface or the ulnar back side bone surface of the near-end phalanx metaphysis. A far-end phalanx fixing part is arranged on the side part of the far-end phalanx surface prosthesis and is used for being fixed on the median bone surface of the back side of the far-end phalanx metaphysis; the far-end end face of the near-end phalanx surface prosthesis and the near-end end face of the far-end phalanx surface prosthesis are each provided with a curved surface part, so that the far-end phalanx surface prosthesis can rotate relative to the near-end phalanx surface prosthesis, and the prosthesis and the side portion of the phalanx are connected and fixed through the near-end phalanx fixing part and the far-end phalanx fixing part. The mode of fixing through the intramedullary cavity is avoided, fixing can be conducted without bone cement, and serious complications such as deep medullary cavity infection are avoided.