960 results about "Prosthesis" patented technology

The embodiment of the invention relates to the technical field of brain-computer interfaces, in particular to a brain-computer interface module, a digital skull implant and an integration method and related application of the digital skull implant. The digital skull implant comprises a skull prosthesis and a brain-computer interface module, wherein the brain-computer interface module and the skull prosthesis are integrated; the brain-computer interface module comprises an ultrasonic transducer used for sending ultrasonic signals to the brain and collecting brain echo signals. The brain-computer interface module comprises an ultrasonic transducer used for sending ultrasonic signals to the brain and collecting brain echo signals. The brain-computer interface module is configured to be integrated with a skull or a skull prosthesis. In this way, the implantation structure integrating the brain-computer interface module in the skull form can have good mechanical strength and biocompatibility, complete implantation and wireless design can be achieved, and ultrasonic waves penetrate through the skull to conduct precise stimulation on the brain area.

The invention discloses an artificial heart valve near-physiological pulsation fluid external evaluation device and method, and relates to the technical field of heart valve testing.The artificial heart valve near-physiological pulsation fluid external evaluation device comprises a supporting frame, a driving unit, a tested valve installation unit and an artery and peripheral loop unit, the driving unit provides power for liquid flowing, and the tested valve installation unit is used for fixing an artificial heart valve; and a liquid volume assembly and a resistance assembly of the artery and peripheral loop unit can simulate the compliance and resistance of aorta blood vessels and peripheral artery blood vessels, so that the pressure waveform simulation of the systemic circulation loop is more accurate. On the basis of the air cavity, the elastic corrugated pipes with different frequency responses are arranged, the compliance and rebound resilience of the aorta are simulated, a device for rapidly replacing the tested valve is designed, and the mechanical property of the simulated human body aorta is adjusted by adjusting the parameters such as the output frequency and the vibration amplitude of the driving unit; real pressure and flow waveforms under different physiological / pathological conditions are simulated, and a more accurate and convenient detection environment is realized.

A prosthesis assembly includes a stent frame that is expandable and configured for being positioned in the ascending aorta, and a receiving socket positioned within a proximal end of the prosthesis assembly. The receiving socket defines a recess for allowing flowthrough of blood into the stent frame. The receiving socket is further configured for selectively receiving a heart valve assembly for replacing a native heart of a patient or maintaining a mode of operation where the socket is empty and blood flows through the socket into the stent frame.

A trial neck piece for a joint endoprosthesis is designed for temporary arrangement on a separate shaft body (60) that is insertable into a tubular bone (9). It comprises a fastening region (12) which can be plugged temporarily onto a head part (61) of the shaft body (60) by means of a plug connection (l l), and a neck region (IO) for receiving a joint element (19) of the joint endoprosthesis. The trial neck piece (I) is designed as a separate, plug-on attachment piece which, with its fastening region (12), can be plugged with form-fit engagement onto the head part (61) and locked. A latching device (2) is provided which comprises a plurality of latching stages for different height stages of the trial neck piece (I). The invention thus makes available an easily attachable trial neck piece which can be arranged in a defined manner in different height positions in order, on the one hand, to obtain a secure and defined arrangement and, on the other hand, to permit the setting of different heights. The invention further relates to an arrangement with a trial neck piece and with an excavating tool, in particular a reamer, and to an instrument set comprising a trial neck piece and an insertion instrument.

A 3-D honeycomb textile can include a textured yarn. The textile can exhibit a heat-shrinkage rate from about 10% to about 60%. The textile can be configured to reversibly change its dimensions under application of stress. Prosthetic valves can have the disclosed textiles as a sealing member. Additionally, prosthetic valves can the disclosed textiles as cushion materials. In addition, methods of making the disclosed textiles and prosthetic valves are described.

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 large forward slot having an adjustable knife blade guide pressure 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 a multi-mode visual tactile sensor and a sensing method thereof. The sensor is composed of a sensing cover and an imaging box body, the sensing cover is fixed on the imaging box body, the sensing cover is provided with a flexible sensing layer, an embedded mark point array combining inert ink and thermochromic ink is arranged in the sensing layer, during tactile sensing, a light source is provided through the imaging box body, and multi-mode sensing data is obtained. Therefore, displacement tracking and temperature sensing are realized at the same time. According to the invention, multi-mode sensing of five modes of a two-dimensional texture pattern, a three-dimensional texture image, a three-dimensional displacement field, a three-dimensional force field and a two-dimensional temperature field can be realized under a single optical frame, real-time co-registration measurement can be realized, and a high-integration-level solution is provided for a robot touch system. The problems that an existing visual tactile sensor cannot sense multi-mode information synchronously, force field reconstruction calculation is complex, and temperature sensing capacity is lacked are solved, and the visual tactile sensor is suitable for application scenes such as robot tactile sensing, man-machine interaction, intelligent artificial limbs and industrial detection.

The invention discloses a hip replacement lower limb equal-length control system and method based on individualized three-dimensional modeling. The hip replacement lower limb equal-length control system comprises a data preprocessing module, a medical image processing module, a dynamic implantation simulation module, a biomechanical analysis module, a guide plate generation module and a postoperative evaluation module. The method comprises the following steps: acquiring bilateral lower limb CT data and carrying out multi-modal registration; segmenting a skeleton structure by using a deep learning model, and constructing a three-dimensional model; reconstructing a complete sphere through affected side femoral head multi-plane fitting, and determining a target femoral head center in combination with uninjured side mirror image data; dynamically adjusting the space posture of the prosthesis to enable the center of the prosthesis head to coincide with the center of the target; performing finite element analysis to optimize stress distribution; and generating a 3D printing file of the individualized osteotomy guide plate and the positioning pointer. According to the method, preoperative accurate planning, intraoperative real-time control and postoperative quantitative evaluation are achieved, the operation precision is effectively improved, and complications of unequal lengths of lower limbs are avoided.

The invention discloses a visual prosthesis control method and system and a storage medium, and relates to the field of medical instruments, and the method comprises the steps: extracting at least one initial target image based on a target object selection result fed back by a user, carrying out the region-of-interest extraction of the initial target image, and obtaining a target object contour image, grouping each contour pixel point based on the brightness values of the contour pixel points in the target object contour map to obtain a plurality of data groups and a stimulation sequence thereof, mapping a stimulation current matrix of each data group based on the stimulation current value and the space coordinate of each contour pixel point, and obtaining a stimulation current matrix of each data group based on the stimulation sequence; and controlling the release of the stimulation current in the electrode array based on each stimulation current matrix in sequence. Redundant information is reduced based on user feedback and region-of-interest extraction, the stimulation sequence based on the average brightness value of each data set is configured, the stimulation current is controlled to be released in the electrode array based on each stimulation current matrix in sequence, and the perception quality of the brain to the target object is improved.

The invention provides a tibial plateau prosthesis and a preparation method, and belongs to the technical field of medical instruments. The tibial plateau prosthesis comprises a tibial plateau plate and an installation assembly, the tibial plateau plate comprises a plateau plate, a connecting sheet layer and a porous structure layer, the connecting sheet layer is arranged on the upper end face of the plateau plate, and the porous structure layer is arranged on the upper end face of the connecting sheet layer through a connecting structure; a solid surrounding edge is arranged on the outer edge of the porous structure layer, a mounting groove for mounting a tibial plateau liner is formed in the lower end face of the plateau plate, and the mounting assembly is arranged on the upper end face of the connecting sheet layer and is suitable for being implanted into a tibial marrow cavity. The invention provides a preparation method of a tibial plateau prosthesis. The preparation method comprises the operation steps of material preparation, 3D printing, semi-finished product disassembly, heat treatment, machining, polishing, cleaning, packaging and the like. The connection structure enhances the stability of connection between the porous structure layer and the connection sheet layer, and reduces the probability of falling of the porous structure.

Methods, systems, and techniques for collecting data for use in designing a personalized dental prosthesis for a patient. At least one camera is used to obtain a series of two-dimensional photos or a three-dimensional model of a head and face of the patient. At least one machine learning model is used to determine facial or oral landmarks and a central incisal edge of the prosthesis from the photos or model. Dimensions for the dental prosthesis are determined form the landmarks and central incisal edge. The dimensions include a labial border of the prosthesis, distal borders of the prosthesis, a superior border of the prosthesis, an inferior border of the prosthesis, a lingual border of the prosthesis, and buccal borders of the prosthesis. The dimensions are output to an output file for use in manufacturing the prosthesis.

The invention discloses a dental restoration customization system combining 3D printing with digital modeling, and particularly relates to the technical field of digital modeling, the dental restoration customization system comprises an oral cavity scanning module, a data fusion module, an occlusion mechanical analysis module, a restoration optimization module, a 3D printing module and a feedback monitoring module, the digital model is generated and transmitted to the data fusion module, the data fusion module integrates oral cavity scanning, medical records and dental data to form a personalized oral cavity digital model, and the occlusion mechanical analysis module collects occlusion data, analyzes stress distribution and feeds back the stress distribution to the prosthesis optimization module. The dental restoration optimization module adjusts the design of the restoration according to the oral cavity structure and the occlusion relationship of the patient, the 3D printing module performs high-precision printing according to the optimization design to generate a personalized dental restoration, and the feedback monitoring module monitors the comfort of the restoration through a pressure sensor and feeds back a result to the restoration optimization module for real-time adjustment. And the optimal performance and comfort of the prosthesis are ensured.

An implantable prosthetic device can include a radially expandable and compressible frame including an inflow end portion and an outflow end portion. The frame can include an expansion and locking mechanism comprising a member having a first set of lateral extensions disposed adjacent an outflow end and a second set of lateral extensions axially spaced from the first set, each lateral extension comprising a bore extending into the lateral extension. The frame can further comprise a commissure attachment member having a first set of arms each extending into a respective inner bore of the first set of lateral extensions and a second set of arms each extending into a respective inner bore of the second set of lateral extensions such that the commissure attachment member is restrained from movement relative to the expansion and locking mechanism in the radial and axial directions.

Systems and methods for synthesis of covers for valvular prosthetics are described. Generally, covers can be synthesized via depositing, submersion, and / or printing. Covers can be synthesized directly onto a valvular frame or synthesized on a temporary substrate and transferred onto the valvular frame. Covers can be synthesized having one or more layers. The covers and the various layers can be synthesized or treated to obtain beneficial properties.

The invention relates to a method and a system for improving oral cavity digital data fitting accuracy by using a noninvasive 3D modeling marking module. The method comprises the following steps: designing and obtaining a standardized marking module with a plurality of digital marking points on the surface through 3D modeling; non-invasively and reversibly adhering to the surface of an abutment which is used as an auxiliary reference system; the method comprises the following steps: acquiring oral cavity digital model data with a marking module after different intervention processing or in different data acquisition modes, detecting point-line-surface features of the marking module and preferentially matching, and default that corresponding data are overlapped and established in the same three-dimensional coordinate reference system to finish optimal fitting alignment; therefore, the digital data fitting accuracy of the oral cavity is improved; the marking module-assisted fitting method can be used for 1) comparing the accuracy of different digital data acquisition modes; 2) multi-unit temporary tooth data transfer errors are reduced; and (3) the acquisition error of the missing occlusion data of multiple teeth is reduced, so that the precise design of the target prosthesis is assisted.

An expandable prosthetic device used as a prosthesis during surgery. The expandable prosthetic device is configured for use in the extremities of a body such as, but not limited to, use in the expansion of the lateral or medial column of a foot. The expandable prosthetic device includes a drive block, a linkage block, a drive screw, a first endplate, a second endplate, and first and sets of linkages. Rotation of the drive screw causes movement of the linkage block relative to the drive block and / or movement of the first endplate relative to the second endplate.

The invention provides an intervertebral prosthesis and an intervertebral prosthesis assembly. The intervertebral prosthesis comprises an upper end plate and a lower end plate, the first end of the upper end plate is hinged to the first end of the lower end plate, and the upper end plate and the lower end plate can swing relatively; the floating supporting piece is arranged between the upper end plate and the lower end plate, the floating supporting piece comprises a first supporting plate, a second supporting plate and an elastic piece, the first end of the first supporting plate is hinged to the first end of the second supporting plate, and the first supporting plate and the second supporting plate can swing relatively; the first end of the first supporting plate and the first end of the second supporting plate are located between the first end of the upper end plate and the first end of the lower end plate, and the elastic piece is arranged between the first supporting plate and the second supporting plate and exerts elastic force so that the first supporting plate can abut against the upper end plate, and the second supporting plate can abut against the lower end plate. According to the technical scheme, the problem that the stability after implantation is poor due to the fact that the angle between the upper end plate and the lower end plate of the intervertebral prosthesis is fixed in the prior art is effectively solved.

A method for generating a prosthesis by using three-dimensional scan data comprises the steps of: receiving encrypted oral data; receiving model information of an artificial intelligence neural network; determining metadata of the encrypted oral data; determining an operation prediction value on the basis of the model information and the metadata; and determining the size of a sub-operation unit on the basis of the operation prediction value. The size of the sub-operation unit is controlled on the basis of the operation prediction value.

The application discloses a preparation method of a customized porous TMJ prosthesis deposited with europium-doped black phosphorus nanosheets, and comprises the following steps: S1, CBCT is used to shoot medical image data, which is imported into Mimics software to reconstruct a model, the reconstructed model is imported into Geomagic software to simulate bone cutting, and a craniofacial model STL file is obtained; S2, TMJ prosthesis customization design is performed on the craniofacial model STL file; S3, SLM printing technology is adopted to perform 3D printing on the customized TMJ prosthesis model, and a prosthesis entity is obtained; and S4, a polydopamine europium-doped black phosphorus nanosheet surface coating is constructed on the porous region of the prosthesis entity model. The application realizes product customization by adopting computer-aided design and three-dimensional printing technology; the europium-doped black phosphorus nanosheet coating is constructed on the porous region of the prosthesis, the mandibular stump and the buccal region are promoted to grow into bone, the traditional "two-dimensional fixation" is changed into "three-dimensional fixation", and the limitation of screw loosening, falling off and bone resorption is got rid of.

A control method for an arthroplasty surgical robot includes: capturing a bone image, transmitting the image to a computer system, and acquiring image data of a bone; selecting a suitable prosthesis model and placing it on a diseased joint for matching, wherein the overlapping part between the model and the bone is the part that needs to be removed and replaced; mounting signal sources; capturing a bone image again, including the signal sources and the joint part; establishing a coordinate system using the signal sources as the origin, and calculating and memorizing an interface between the model and the bone overlapping part and the coordinates of the interface in the coordinate system; and receiving the coordinates by a surgical robot, and obtaining the positional coordinates by the surgical robot of a part of the diseased joint that needs to be removed, and performing a surgical operation by the surgical robot.

The invention relates to the technical field of scientific demonstration teaching aids, in particular to a urethral catheterization complication simulation and emergency treatment training robot which comprises a dummy body and further comprises an elastic body and a water tank, the elastic body is arranged on one side of the interior of the dummy body, and a through hole is formed in the side wall of the dummy body and the face, attached to the elastic body, of the dummy body in a penetrating mode; the water tank is arranged on one side in the dummy body and is distributed front and back with the elastic body; a plurality of telescopic cavities are formed in the elastic body, the telescopic cavities are expanded by injecting water into the telescopic cavities so as to extrude the simulation prosthesis and the urethra, the diseases of urethra lumen distortion and walking deviation caused by bladder pressure increase can be simulated, and therefore the emergency treatment capacity of an operator for coping with the conditions can be trained.

The application provides a knee joint prosthesis tibial plateau capable of enhancing fixation and a matching tool, and specifically comprises: a tibial tray, which is a hollow cylindrical structure and is externally provided with three convex bodies; a base, which is provided with a groove penetrating into the tibial tray and is fixed on the tibial tray; a pushing device, which comprises: an extension rod arranged at both ends of a worm, a worm with threads arranged on the outer surface of both ends, a turbine arranged at both sides of the worm, an upper support body arranged on the top of the turbine and connected with a fixing device through a first connecting body, and a lower support body arranged at the bottom of the turbine and connected with the fixing device; and the fixing device is a hollow cone, which is internally provided with a first spring, one end of the first spring is connected with the first connecting body, and the other end is connected with a fixing block. The technical scheme of the application effectively solves the technical problem that after the knee joint prosthesis is implanted into the tibia, the tibial plateau is not stable, the prosthesis is loose and comes off, and bone fusion is affected.

The utility model discloses a straight base station for precision positioning of dental implant prosthesis, concretely relates to straight base station technical field, including middle base station, upper base station and lower base station, and upper base station and lower base station are located at the top and bottom of middle base station respectively, the inside movable setting of middle base station has connecting column, and the top of connecting column passes through middle base station and is fixedly connected with upper base station, is provided with adjusting assembly on connecting column, and adjusting assembly includes second screw rod, two limit rods and handle. The utility model discloses can drive second screw rod rotation through rotating handle, and second screw rod can drive connecting column to move upwards, thereby drive upper base station to move upwards, and two limit boards can limit the distance of upper base station and move upwards, and the handle can drive upper base station to move downwards in the same way, and the distance between middle base station and upper base station is adjusted according to demand, and the operation is simple, the height of upper base station is conveniently adjusted, and the use effect is good.

The invention relates to the technical field of cooling dies, in particular to a composite conformal cooling die for silica gel breast rollover, which comprises a stamping shell internally provided with a driving unit, the inner top wall of the stamping shell is provided with an upper die mechanism, and the inner bottom wall of the stamping shell is provided with a lower die mechanism; the upper die mechanism comprises a main channel, branch channels arranged in an annular array with the main channel as the circle center, a flow increasing pipe, a mounting plate with the surface sprayed with a metal coating, cooling fins and a temperature control assembly. The temperature sensors are used for monitoring the temperature of different parts of the silica gel breast in real time, a driving motor is started according to the temperature change, a pushing plate extrudes a corresponding connecting plate, an abutting block and an abutting ring extrude a branch channel, the diameter of the branch channel is changed, and therefore the flow of an area with the low temperature is reduced, and the working efficiency is improved. And the area cooling effect of the area with the low temperature is reduced, so that the overall cooling speed of the silica gel prosthesis is similar, and the cooling uniformity in the silica gel prosthesis mold turning production process is improved.

The invention relates to a system for monitoring a person's physical condition in a domestic setting, e.g., in home care, and / or for fitness recording applications. The system comprises an implant (100) for implantation into a person, e.g., an endoprosthesis. A sensor device (10) is integrated into the implant (100). The sensor device is configured to acquire and transmit data (13) that is indicative of the person's current condition. For this purpose, the sensor device may include at least one motion sensor (11) for detecting movement and / or position of the person and / or at least one biomedical sensor (12) for acquiring a biological parameter or physiological measurement of the person. The system further comprises several receiver modules (200), each configured to receive data (13) transmitted by the sensor device (10).Furthermore, the system comprises an evaluation device (300) configured to receive data (13) from the sensor device (10) from the receiver modules (200) and to initiate an action based on an evaluation of the received data (13). The system can optionally be equipped with several additional modules. Advantageously, a system is provided that enables reliable monitoring of a person's physical condition in a domestic setting and / or for fitness recording applications.

The present invention provides a method for using prostheses, such as replacement heart valves, to be delivered and / or controlled to a desired location within the body. [Solution] A foldable and expandable frame comprising rows of cells may include a plurality of axial connecting portions extending between the top and bottom ends of the cells, each axial connecting portion being shaped to bend to accommodate transient changes in cell height during uneven compression of the replacement heart valve. The frame is advantageous when advancing the replacement heart valve through a funnel-shaped compression tool. The axial connecting portions are sufficiently flexible to accommodate changes in the frame shape during compression, while also being sufficiently resilient to reinforce the structural integrity of the frame in the fully deployed state. The replacement heart valve is preferably a double-frame heart valve, where the axial connecting portions form part of the inner frame, and the outer frame is provided to engage with tissue and form a seal.

A dual mobility prosthetic bearing comprises: an outer femoral head component (9020) having a part-spherical outer bearing surface (9022) and a head recess (9024) comprising a proximal portion (9026) defined by a part-spherical inner bearing surface and a distal portion (9028) defined by a generally tubular inner bearing surface, the proximal portion having a maximum diameter that is greater than a maximum diameter of the distal portion; an inner femoral head component (9030) having a neck recess (9032) for receipt of a femoral neck component (9004), and a part-spherical outer bearing surface (9034) configured to be received within the proximal portion of the head recess; wherein the part-spherical outer bearing surface of the outer femoral head component and the part-spherical outer bearing surface of the inner femoral head component have a coincident centre of rotation; and wherein the inner femoral head component comprises a generally tubular skirt (9036) configured for receipt within the distal portion of the head recess.

This invention relates to the field of implant bridging technology, specifically to a bridging-type implant superstructure restoration. It includes a support layer structure, which is fixed to the jawbone by a plurality of implant screws rotatably mounted below it. A plurality of crowns are mounted above the support layer structure, with the support layer structure positioned between the crowns and the jawbone. The support layer structure absorbs part of the occlusal impact force generated by the crowns from top to bottom. Fixing components are disposed inside the crowns, securing them above the support layer structure. The fixing components are coaxially arranged with the implant screws. The support layer structure, through the fixing components, restricts the installation orientation of the crowns, ensuring that the crown axis remains parallel to the jawbone surface. The lower and upper clamps of this invention are fixedly connected by two staggered support rods. When the lower and upper clamps approach each other, they compress the two support rods, causing lateral deformation and absorbing the occlusal impact force.

The invention provides a 3D printing winged acetabular cup and a preparation method thereof.The 3D printing winged acetabular cup specifically comprises an acetabular cup body which is a hollow hemisphere and a guide rail groove, the guide rail groove is an annular groove and is formed in the bottom of the acetabular cup body, and the guide rail groove is provided with an outer side sliding rail and an inner side groove; a second screw hole is formed in the wing plate, and an expansion component is arranged at the front part of the wing plate; the connecting device comprises a connecting rod, and the connecting rod is arranged between the sliding ball and the wing plate; the sliding ball is a hollow ball body with an opening in the surface and is arranged on the outer side sliding rail; a limiting ball is further arranged on the left side in the sliding ball, and pushing rods are arranged in the right side of the sliding ball, are symmetrically arranged up and down and are hinged to the connecting rod; a fixing device is further arranged in the sliding ball. According to the technical scheme, the problems that after the winged acetabular cup is implanted into the human body, the wing plate cannot deal with the complex bone defect condition, and the stability of the prosthesis is insufficient are effectively solved.

The present application relates to the field of dental prosthesis manufacturing, and particularly relates to a 3D printing device and method for customized design of dental prosthesis. The device comprises a printing box, a 3D printing device, a cleaning assembly, a printing base, a donor membrane assembly, an accumulator, a deposition assembly and a prosthesis assembly assembly. The 3D printing device is arranged on the top of the printing chamber; the cleaning assembly is arranged on one side of the 3D printing device; the printing base is arranged at the bottom of the printing chamber and is configured to be reversibly movable; the donor membrane assembly is arranged on the other side of the cleaning assembly; the deposition assembly is arranged in the ring-shaped structure of the membrane; and the prosthesis assembly assembly is arranged through the installation chamber. The present application solves the industry problem of easy collapse of the thin-walled metal base of the dental prosthesis by means of integrated design and laser deposition innovative process, while realizing full-process automatic production, significantly improving efficiency and precision.