34 results about "Prosthesis use" patented technology

The invention discloses a self-adaptive bionic cancellous bone defect prosthesis and a design method thereof, and belongs to the technical field of medical prostheses, the prosthesis is composed of biological interface gradient microporous structure parts and a main body bionic truss supporting structure part, the biological interface gradient microporous structure parts are arranged at the two ends of the main body bionic truss supporting structure part, and the main body bionic truss supporting structure part is arranged on the main body bionic truss supporting structure part. The method is mainly used for reconstructing bone defects, bionically designing a truss part of a main body with consistent arrangement direction and form of human body bone trabecula through an established linear relation between CT gray value and bone density-elasticity modulus, adaptively matching mechanical conduction of a bone structure, reducing stress shielding effect, and improving bone defect reconstruction efficiency. Meanwhile, various complex mechanical working condition requirements of the prosthesis are met, the prosthesis failure risk is reduced, and the service life of the prosthesis is prolonged.

The present application is directed a Joint Revision Surgery Apparatus which includes a surgical knife blade guide block which has a plurality of rearward blade guide slots, a central cavity and a plurality of guide slots having a two-way adjustable L-shaped guide plate. The surgical knife blade guide block central cavity houses a stem trunnion securing member and is positioned over the trunnion end of the existing prosthesis to be removed and secured to the prothesis. The guide blade block is secured to the trunnion of the prosthesis to be extracted using a stem trunnion securing member housed within the guide block. Straight, curved and compound curved knife blades are guided by the blade guide slots to cut the prothesis free. The Joint Revision Surgery Apparatus facilitates rapid, efficient and complete removal of an existing prosthesis during joint revision surgery, and significantly increases positive medical outcomes for joint revision procedures.

The invention discloses an artificial temporomandibular joint replacement bone trimming device, and relates to the technical field of joint prostheses, the artificial temporomandibular joint replacement bone trimming device comprises a positioning plate similar to a temporomandibular joint in shape, a prosthesis used as an artificial temporomandibular joint replacement bone is arranged in the positioning plate, and an osteotomy guide plate assembly used for osteotomy and positioning of the prosthesis is arranged in the positioning plate; a prosthesis grinding assembly is further arranged on the positioning plate; the right-angle threaded rod structures are driven to be close to or far away from each other by rotating the adjusting rotary drum, so that osteotomy grooves among the articular fossa guide plate, the articular head guide plate and the connecting plate are adjusted, positioning screws penetrate through the guide plates and positioning holes in the prosthesis for positioning, and sick part excision and prosthesis implantation operation are performed. The rack is driven by the driving gear to rotate along the positioning plate, the edge of the prosthesis is ground through the bone file, and ground powder is sucked and recycled; the device has the advantages of being high in operation efficiency, good in safety, convenient to use and simple in structure.

The invention provides an artificial prosthesis assembly for an ankle joint replacement operation, and belongs to the technical field of ankle joint prostheses. Comprising a talus arc plate, an arc-shaped guide rail is installed at the top of the talus arc plate, rivets are installed in the talus arc plate, a joint soft plate is connected to the top of the arc-shaped guide rail in a sliding mode, and a tibia installation plate is installed above the joint soft plate; and a rivet fixing assembly is mounted at the top of the tibia mounting plate. By arranging the elastic adjusting assembly and the sliding lubricating assembly, the contact area with bone tissue can be remarkably increased, the initial stability of the prosthesis is enhanced, the separation risk of the prosthesis is reduced, and the elastic relaxation degree of the prosthesis is adjusted and controlled, so that the modulus of the prosthesis is dynamically matched with the bone elasticity of a patient, and the bone interface stress concentration risk of the prosthesis is reduced; meanwhile, the movement resistance of the prosthesis is reduced through ball lubrication, material fatigue and loss caused by dry friction between the prostheses are avoided, and the service life of the prosthesis is prolonged.

The application provides an artificial prosthesis assembly for ankle replacement surgery, and belongs to the technical field of ankle prosthesis. The artificial prosthesis assembly comprises a talus arc plate, a circular arc guide rail is arranged on the top of the talus arc plate, a rivet is arranged in the interior of the talus arc plate, a joint soft plate is slidably connected to the top of the circular arc guide rail, and a tibial mounting plate is arranged above the joint soft plate; a rivet fixing assembly is arranged on the top of the tibial mounting plate. The elastic adjusting assembly and the sliding lubricating assembly are arranged, so that the contact area with the bone tissue is significantly increased, the initial stability of the prosthesis is enhanced, the risk of prosthesis separation is reduced, the prosthesis modulus is dynamically matched with the bone elasticity of the patient through the regulation of the elastic relaxation degree of the prosthesis, the risk of stress concentration of the prosthesis bone interface is reduced, the success rate of bone integration is improved, meanwhile, the prosthesis activity resistance is reduced through the ball lubrication, material fatigue and loss caused by dry friction between the prostheses are avoided, and the service life of the prosthesis is prolonged.

Proposed is a dental composition. The dental composition includes 20 to 40 wt of dispersed phase zirconia solid solution and 60 to 80 wt of matrix phase zirconia solid solution.

1. The name of the product of this design: Prosthesis (pistol type). 2. Purpose of the product of this design: a prosthesis used for eyebrow arch filling surgery. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The object of the present invention is to provide a method for generating prosthetic devices using three-dimensional scan data. [Solution] A method for generating a prosthesis using 3D scan data includes the steps of: receiving encrypted oral data; receiving model information of an artificial intelligence neural network; determining metadata of the encrypted oral data; determining a calculated predicted value based on the model information and the metadata; and determining the size of a sub-calculation unit based on the calculated predicted value. The size of the sub-calculation unit is controlled based on the calculated predicted value.

The invention discloses a variable-diameter labor-saving humerus prosthesis for rotator cuff deficiency. The variable-diameter labor-saving humerus prosthesis comprises an outer-layer humerus head prosthesis and an inner-layer humerus head prosthesis, wherein the appearance of the outer humerus head prosthesis is of a partial spherical structure, and the diameter of the outer humerus head prosthesis is larger than that of a physiological humerus head of a patient; the appearance of the humerus head prosthesis connected with the inner layer of the humerus handle is of an over-hemisphere structure or a complete spherical structure; at least the part, exceeding the hemisphere, of the inner-layer humerus head prosthesis is embedded in the outer-layer humerus head prosthesis, and the inner-layer humerus head prosthesis can rotate in a universal mode in the outer-layer humerus head prosthesis; the sphere center of the inner humerus head prosthesis is deviated to the globe top side of the outer humerus head prosthesis relative to the sphere center of the outer humerus head prosthesis, so that the rotation center of the prosthesis moves inwards, the arm of force is increased, the labor-saving effect of the upward lifting action is achieved, and it is guaranteed that the tensioned deltoid muscle can complete the initial 30-degree upward lifting action; a middle buffer structure passing through a hemisphere can be arranged between the two layers of prostheses, so that the structural stability of the whole prosthesis in use is ensured on the basis of ensuring that the arm of force is increased to the maximum extent.

A self-adaptive bionic cancellous bone defect prosthesis and a design method thereof belong to the technical field of medical prostheses. The prosthesis consists of a bio-interface gradient microporous structure portion and a main bionic truss support structure portion. The bio-interface gradient microporous structure portion is arranged at both ends of the main bionic truss support structure portion and is mainly used to reconstruct bone defects. Through the established linear relationship between CT grayscale value and bone density-elastic modulus, the main truss portion is bionicly designed with the same arrangement direction and morphology as human trabeculae, adaptively matching the mechanical conduction of the bone structure, reducing the stress shielding effect, and simultaneously matching the prosthesis's various complex mechanical working conditions, reducing the risk of prosthesis failure, and extending the prosthesis's service life.

The application discloses a multiple controlled-release drug-loaded coating modified anti-heterotopic ossification artificial temporomandibular joint prosthesis and a preparation method thereof, and comprises the following steps: surface treatment of a biomimetic artificial temporomandibular joint prosthesis; dopamine assisted co-deposition is adopted to sequentially form a DF-HA self-assembled nanosphere coating and a meloxicam liposome drug-loaded coating on the surface of the biomimetic artificial temporomandibular joint porous titanium prosthesis; and RGD is grafted on the surface of the meloxicam liposome drug-loaded coating by chemical natural deposition, and the anti-heterotopic ossification artificial temporomandibular joint prosthesis is obtained. The artificial temporomandibular joint prosthesis is modified by active drug-loaded meloxicam liposomes on one hand, and the artificial temporomandibular joint prosthesis is modified by RGD-DF-HA layered drug loading on the other hand, long-term slow release and programmed release of drugs are realized, anti-inflammatory effects are achieved, the purpose of treating and preventing heterotopic ossification after artificial joint replacement is achieved, long-term stability of artificial joint replacement is beneficial, early prevention, intervention, service life of the artificial joint prosthesis is improved, and the life quality of patients is improved.

This invention provides a prosthesis with an identification marking section containing various information, which is superior to conventional designs in terms of hygiene, safety, visibility, adhesion, and comfort, as well as a method and system for verifying the user and the prosthesis using the same. [Solution] A prosthesis with an information display section, characterized by having a component made of metal (gold, silver, palladium, or an alloy containing these) or resin (polyamide resin, polyester resin, polycarbonate resin, polypropylene resin, or acrylic resin, etc.), and including an information display section engraved on the surface of the component, as well as a verification method and system utilizing the same.

The invention relates to an improved method for manufacturing a prosthesis (1') from a positive mould (110), for fitting to a residual limb of an amputee. The method comprises 3D modelling of the inner surface of an existing socket (2) comprising a 3D model (44) of the surface in a spatial reference system (10) and automatic modification of the 3D model (44) in order to optimize the arrangement of an artificial limb (3) in the socket (2') to be manufactured. The method further comprises determining a position of a fastener (116) in the spatial reference system (10) with the aid of a guide (112) for placement of the fastener (116). The invention also relates to a manufacturing aid assembly (100) configured to aid in the manufacture of a socket according to the method of the invention and comprising a positive mould (110) and the placement guide (112).

This invention relates to the field of veterinary medical device technology, and more particularly to a high-performance orthopedic implant for veterinary use and its preparation method. The method includes: preparing a solid external structure using additive manufacturing technology with a matrix material, and preparing a three-dimensional porous structure for the bone contact area on the solid external structure; preparing a micromaterial layer on the three-dimensional porous structure for the bone contact area using PVD technology, thereby obtaining the high-performance orthopedic implant for veterinary use. The preparation method of this invention combines additive manufacturing with technologies such as spraying, PVD, and laser sintering, employing cold spraying combined with laser sintering to overcome the non-metallurgical bonding defects of pure cold spray coatings, improving bonding strength and implant lifespan. The prepared implant possesses high mechanical strength, precise three-dimensional porosity, suitable elastic modulus, and good biocompatibility and osteoinductive properties. Through the synergistic effect achieved by the microporous structure and multi-material composite, excellent bone ingrowth can still be achieved even in cases of bone cell infarction.

The utility model belongs to the technical field of medical apparatus and instruments, and particularly relates to a positioning measuring scale for an ossicular replacement prosthesis, which is mainly used in an ossicular replacement prosthesis operation and mainly comprises a base with a top end face; the measuring rod is arranged on the top end face of the base, the axis of the measuring rod is perpendicular to the top end face, and the measuring rod is provided with an identification structure; the method mainly solves the problem that the length of the ossicular is improperly selected due to the fact that the selected ossicular prosthesis depends on experience and naked eyes when the artificial ossicular is selected in the middle ear microsurgery. The device has the effects of measuring the distance between the tympanic membrane and the hammer bone of a patient and the stapes base plate / the distance between the tympanic membrane and the stapes so as to select an ossicular prosthesis with a proper length for implantation in an operation, ensuring the stability of the ossicular prosthesis after being placed, improving the sound transmission effect and reducing complications.

The present application relates to the technical field of medical devices, and discloses a knee joint prosthesis, which comprises a trabecular bone type, one side of the trabecular bone type is provided with a front condyle side, the other side of the trabecular bone type is provided with a notch, both ends of the trabecular bone type notch are provided with distal end sides, the upper surface of the distal end side is provided with a trabecular column, one side of the distal end side is provided with a rear condyle side, the side wall of the trabecular bone type is provided with a femoral condyle body, the inside of the trabecular column is provided with a column, one side of the rear condyle side is provided with a femoral component surface, and the outer wall of the femoral component surface is provided with. The femoral side prosthesis realizes better fusion of the femoral side prosthesis and bone tissue, promotes bone ingrowth, and achieves the effect of long-term stable fixation. The problems of poor long-term stability, easy loosening and easy wear of the friction interface of the traditional femoral side prosthesis are solved, and the service life of the prosthesis and the life quality of the patient are improved.

The application discloses a prosthesis capable of fixing a proximal femur in hip joint revision surgery and relates to the technical field of medical devices.The prosthesis comprises a femoral stem body and a dynamic auxiliary structure.The dynamic auxiliary structure comprises a side groove, a counterweight and a limiting seat.The side groove is provided through the wide side of the femoral stem body.The two side ports of the side groove are provided with elastic plates, and the side groove is provided with a guide rod.The counterweight is movably sleeved on the guide rod.A traction spring is arranged between the top of the counterweight and the end of the side groove.The two sides of the counterweight are embedded with protrusions.The limiting seat is arranged on the inner wall of the side groove and located on the two sides of the counterweight.A guide column is slidably arranged through the limiting seat, and the end of the guide column close to the counterweight is provided with a transmission seat corresponding to the protrusions.The prosthesis can reduce the micromotion of the prosthesis and the femoral medullary cavity, promote bone ingrowth, reduce the incidence of long-term loosening, activate osteoblast activity, inhibit osteoclast proliferation, maintain the bone mass around the prosthesis, and prolong the service life of the prosthesis.

A scan posts system with scan posts is presented. Each scan post includes a scan post core and a scan post body surrounding the core and resting in the shoulder of the core. At least part of the scan post body is intended to be in contact with healing tissue. Each scan post body belongs to a group of scan post bodies including at least a combination of two different shapes with three different sizes and at least one height. Each scan post body includes at least one scan mark suitable for providing information about the shape, size and height of the scan post to a scanning device, this information being useful for designing a dental implant prosthesis. A method of manufacturing a dental implant prosthesis using such a system is also presented.

The application discloses a mitral valve replacement prosthesis and an outer support thereof, and belongs to the field of heart valve replacement prostheses. The outer support comprises, from top to bottom, an atrial fixation section located in an atrium, a mitral valve annulus blocking section and a mitral valve replacement prosthesis inner support connecting section located in a ventricle. The upper edge of the atrial fixation section and the lower edge of the inner support connecting section are circular or quasi-circular. The cross section of the mitral valve annulus blocking section is a wavy D-shaped structure. The connecting rods in the inner support connecting section comprise at least one wavy connecting rod. At least two identical or two different mark points are arranged on the petal structure of the atrial fixation section. The wavy D-shaped structure and the wavy rectangular structure are arranged, so that the circumferential rotation and the up-and-down displacement are effectively prevented, and the service life of the prosthesis is improved. The elastic wavy connecting rod is arranged, so that the production and processing success rate is improved and the service life is prolonged. The mark points are increased, so that the prosthesis is more easily identified during surgery, and the surgery efficiency and success rate are improved.

The invention discloses an anti-ectopic ossification artificial temporomandibular joint prosthesis modified by multiple controlled-release drug-loaded coatings and a preparation method thereof. The preparation method comprises the following steps: carrying out surface treatment on a bionic artificial temporomandibular joint prosthesis; dopamine is adopted to assist co-deposition on the surface of the bionic artificial temporomandibular joint porous titanium prosthesis to sequentially form a DF-HA self-assembled nanosphere coating and a meloxicam liposome drug-loaded coating; and grafting RGD on the surface of the meloxicam liposome drug-loading coating by adopting chemical natural deposition to obtain the meloxicam liposome drug-loading coating. On one hand, the active drug-loading meloxicam liposome is used for modifying the artificial temporomandibular joint prosthesis, and on the other hand, the RGD-DF-HA layered drug-loading is used for modifying the artificial temporomandibular joint prosthesis, so that long-term slow release and programmed release of drugs are realized, synergistic anti-inflammation is realized, and the purpose of treating and preventing ectopic ossification after artificial joint replacement is realized; long-term stability and early prevention and intervention of artificial joint replacement are facilitated, the service life of the artificial joint prosthesis is prolonged, and the life quality of a patient is improved.

This application provides a self-adaptive trabecular bone knee joint prosthesis and its design and fabrication method. The electronic device acquires a bone-cut model of the knee joint and a prosthesis model that adapts to the osteotomy surface of the bone-cut model; assembles the bone-cut model and the current prosthesis model into an assembly; performs mechanical simulation using the assembly to obtain the stress and strain distribution at the contact surface between the prosthesis model and the bone-cut model; if the strain distribution does not meet the ideal strain range requirement, the structure of the contact interface is adjusted according to the strain distribution to obtain a new prosthesis model; this process continues until the strain distribution at the contact interface meets the ideal strain range requirement. Thus, instead of relying on experience or a uniform template, a fitting scheme is dynamically generated based on each patient's actual anatomy and mechanical response, thereby solving the current problem of not being able to adapt to individual patient differences, improving the long-term bonding stability of the prosthesis and bone, and extending the prosthesis's lifespan.

The invention discloses a bionic muscle device which comprises a bionic muscle prosthesis, the bionic muscle prosthesis is of an elastic columnar structure, and the end face of the bionic muscle prosthesis is sunken to form a containing cavity; the permanent magnet is arranged in the cavity wall of the accommodating cavity; the electromagnet piece is arranged in the accommodating cavity; the power supply module is electrically connected to the electromagnet, and the electromagnet is magnetized to attract or repel the permanent magnet under the power-on condition so as to drive the bionic muscle prosthesis to generate elastic deformation. It can be understood that the technical scheme solves the problems that when an existing bionic muscle prosthesis is used, noise is large, and the shape cannot be changed.

The invention discloses a digital design and manufacturing method and system for a knee joint tibial prosthesis, and the method comprises the steps: collecting the stress distribution and motion trail of a knee joint in different motion states according to the gait analysis data and dynamic mechanical sensor data of a patient, and obtaining a dynamic mechanical feature set of the knee joint; inputting the dynamic mechanical feature set into a geometric design model based on a generative adversarial network, generating an initial tibial prosthesis geometric shape, and obtaining a preliminarily optimized tibial prosthesis geometric model; according to the tibial prosthesis geometric model, designing an internal porous structure of the prosthesis by using a material microstructure optimization algorithm based on deep reinforcement learning to obtain a material and tibial prosthesis design scheme; and inputting the tibial prosthesis design scheme into multi-axis additive manufacturing equipment to obtain a final knee joint tibial prosthesis. By utilizing the embodiment of the invention, the precision and consistency of prosthesis manufacturing can be ensured, and the overall quality of the prosthesis is further improved.

The invention relates to the technical field of medical instruments, and discloses a knee joint prosthesis which comprises a bone trabecula inner model, one side of the bone trabecula inner model is provided with an anterior condyle side, the other side of the bone trabecula inner model is provided with a notch, the two ends of the notch of the bone trabecula inner model are provided with far-end sides, the upper surfaces of the far-end sides are provided with bone trabecula stand columns, and the upper surfaces of the far-end sides are provided with bone trabecula vertical columns. A posterior condyle side is arranged on one side of the far end side, a femoral condyle body is arranged on the side wall of the bone trabecula inner model, a stand column is arranged in the bone trabecula stand column, a femoral component surface is arranged on one side of the posterior condyle side, and a femoral component surface is arranged on the outer wall of the femoral component surface. By means of the thighbone side prosthesis, better fusion of the thighbone side prosthesis and bone tissue is achieved, bone ingrowth is promoted, and the long-term stable fixing effect is achieved. The problems that a traditional thighbone side prosthesis is poor in long-term stability and prone to loosening, and a friction interface is prone to abrasion are solved, the service life of the prosthesis is prolonged, and the life quality of a patient is improved.

The utility model belongs to an auxiliary tool for manufacturing specimens, and provides a mold for manufacturing prostheses by stripping specimens of a pheasant type, which comprises a first shell and a second shell which are mutually inserted, a cavity is formed inside the first shell and the second shell after the first shell and the second shell are inserted, and the whole body of the first shell and the second shell after the first shell and the second shell are inserted has the shape similar to the trunk of the pheasant type. And an injection hole communicated with the cavity is formed in the front end of the first shell. According to the utility model, the general appearance of a pheasant is simulated by utilizing the cavity formed by the first shell and the second shell which are mutually inserted, and the foaming model of the trunk of the pheasant stripped specimen is formed after the polyurethane foaming agent is injected into the cavity and cured; and in the later stage, trimming is performed according to the actual measurement size of the pheasant type peeled specimen, and the pheasant type peeled specimen prosthesis can be obtained. The inserting distance between the first shell and the second shell can be flexibly adjusted according to the size of the trunk of a pheasant, later-stage trimming is facilitated, the procedure for manufacturing a prosthesis through the mold is simpler and more convenient, and the manufacturing efficiency is high.

The invention relates to a penile prosthesis for the female genital organ, comprising: - a phallic-shaped body (1) made of selected material; - a contact module (3) disposed at one end of the body (1), having a contact surface (31) configured to cover the pubic surface and allow the prosthesis to be locked in its position of use; - a clitoral stimulation module (4), configured to perform an action enabling stimulation of the wearer's clitoris; characterized in that the prosthesis further comprises: - means for detecting the movement (40) of said prosthesis in use, connected to the clitoral stimulation module (4), and configured to detect the movements observed by the prosthesis according to selected parameters; and - processing means (50), configured to vary the intensity of clitoral stimulation proportionally according to the frequency of movement detected by the prosthesis. Fig 2

The utility model relates to the technical field of subcutaneous implants in medical cosmetic plastic surgery, in particular to a porous prosthesis. The utility model discloses a porous prosthesis which comprises at least one prosthesis main body, and the prosthesis main body is of a three-dimensional structure with a plurality of open pores in the surface. The prosthesis main body is provided with a first component and a second component which are integrally processed and formed, each of the first component and the second component is provided with a supporting leg end extending outwards, and an included angle between the central axis of the supporting leg end of the first component and the central axis of the supporting leg end of the second component is an obtuse angle. The shape of the prosthesis is obtained from the contour foldover of the shape of the prosthesis engraved in a plurality of clinical operations, the model universality of the prosthesis used in the orbital surface filling operation is improved, meanwhile, the abundant opening structures can induce tissue cells to grow in, and fusion of the tissue cells and the prosthesis body is achieved.

Exemplary embodiments provide methods and systems for delivering a prosthesis to a target location in a lumenal system of a patient. At least one tether is secured proximate the target location to serve as a rail, and a prosthesis is advanced along the rail to the target location and secured in place. Exemplary methods and systems provide for repair of the mitral and tricuspid valves, as well as abdominal aortic aneurysms, stomach valves, fallopian tubes and the pulmonary system, among others. Also disclosed are various prostheses suitable for use with the disclosed methods and systems.

The invention relates to an improved method for manufacturing a prosthesis (1') from a positive mold (110) for fitting a residual limb of an amputee. The method comprises 3D modeling of the inner surface of an existing socket (2), including a 3D model (44) of said surface in a spatial reference frame (10), and automatic modification of said 3D model (44) to optimize the arrangement of an artificial limb (3) within the socket (2') to be manufactured. The method further comprises determining the position of a fastener (116) in said spatial reference frame (10) using a positioning guide (112) for the fastener (116). The invention also relates to a manufacturing aid assembly (100) configured to operate a manufacturing aid for a socket according to the process of the invention and comprising a positive mold (110) and the placement guide (112). Fig. 9

The present invention relates to a method for manufacturing a prosthesis for a dental implant using a digital library including three-dimensional shape information of a prefabricated abutment with respect to prefabricated abutments having a plurality of specifications, according to an embodiment of the present invention, when designing the digital library including the three-dimensional shape information of the prefabricated abutment, the digital library including the three-dimensional shape information of the prefabricated abutment, and the digital library including the three-dimensional shape information of the prefabricated abutment. The present invention relates to a method for manufacturing prostheses by a dental technician, said method comprising the steps of: providing a prefabricated abutment comprising a root pile forming a cutting surface and / or a cutting groove on the outer circumference, disseminating the cutting surface and / or the cutting groove, and designing a digital library comprising three-dimensional profile information of the abutment, whereby the dental technician can manufacture the prostheses even if errors occur in the process of manufacturing the prostheses by the dental technician. Early contact between the cutting surface and / or the periphery of the cutting groove between the prosthesis and the root pile of the abutment can also be prevented.