1935 results about "Prosthesis" patented technology

The invention discloses a digital dental implant bridge and false tooth and false tooth automatic adaptation and production system based on CBCT (cone beam computed tomography) and oral scanning data and a control method thereof, which are used for realizing automatic design, adaptation and production of a dental implant bridge and false teeth and false teeth and fusing the CBCT data and the oral scanning data to generate a three-dimensional oral cavity digital model. An automatic modeling technology based on deep learning is used for analyzing the occlusion relation, the adjacent tooth form and the implant angle of a patient, and an implant tooth bridge and false teeth are automatically designed to obtain a three-dimensional model of the prosthesis. A computer vision technology or a three-dimensional scanning technology is adopted to detect the consistency of the size and shape of a produced finished product and the three-dimensional model; and digital try-on is performed through an augmented reality (AR) technology, so that rapid adjustment of various parameters of the product is realized.

Methods are described for conducting minimally invasive medical interventions utilizing instruments and assemblies thereof to stabilize and / or fixate a dysfunctional sacroiliac (SI) joint. In one embodiment, a defect creation assembly is advanced from a posterior approach into the SI joint and configured to create pilot SI joint opening; portions of which being disposed in the sacrum and ilium bone structures. After the pilot SI joint opening is created, a prosthesis is press-fit into the pilot SI joint opening, wherein the pilot SI joint opening transitions to a larger post-prosthesis insertion SI joint opening and the prosthesis is securely engaged to the sacrum and ilium bone structures.

The invention provides an interbody fusion prosthesis and an interbody fusion prosthesis component, the interbody fusion prosthesis comprises an interbody fusion main body, the interbody fusion main body is provided with a bone grafting cavity, and the bone grafting cavity penetrates through the surface of the interbody fusion main body to form a first opening in the interbody fusion main body; and the first end plate is movably arranged at the first opening, and the first end plate is provided with a first avoiding position for avoiding the first opening and a first shielding position for covering the first opening. According to the technical scheme, the problem that in the related technology, the bone filling material in the bone grafting cavity has the falling risk is effectively solved.

The invention discloses a calculation method and system for the optimal placement orientation of an acetabular cup in a total hip joint operation, and belongs to the field of surgical instruments. The calculation method comprises the steps that CT data of a patient is obtained, a three-dimensional model is constructed, point locations in the three-dimensional model are recognized, a three-dimensional coordinate system is established according to a pelvis mark point and a femoral head rotation center point, and the optimal placement orientation of the acetabular cup is calculated; and determining the initial position of femoral motion according to the femoral head rotation center point and the femoral mark point. And drawing a space femoral neck movement range according to the femoral form and a preset hip joint movement range. The centroid of the curved surface is calculated based on the space femoral neck movement range, the rotation center point of the femoral head serves as the starting point and extends towards the centroid to form a ray, and the orientation of the ray in three-dimensional coordinates serves as the optimal placement orientation of the acetabular cup. According to the method, the individualized thighbone shape and the joint movement range of a patient are considered, the optimal acetabulum orientation is given according to different prostheses, and a definite operation target and guidance are given to an operator, so that the dislocation risk after hip replacement is reduced, and the acetabular cup placement reliability is greatly improved.

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.

An omni-abutment includes (i) an apical connection portion that mates / attaches with the receiving portion on a corresponding implant; and (ii) a coronal superstructure. The dental abutment provides features that are not currently found in abutments on the market, allowing the abutment to be used as a key foundation for scanning, impression taking, stability testing, and much more which ultimately would lead to an easier restorative process and fabrication of a dental prosthesis. The abutment could also be used for fabrication of a final prosthesis. The abutment may include alignment indents or protrusions in a platform thereof, internal grooves (e.g., square or rounded) as a tri-lobe or other configuration in the central axial hollow channel, recesses (e.g., divots, grooves) in the exterior periphery for increased adhesion to a gingival healing cuff, internal threading in the hollow channel, and a hex, NC or other connection at the apical connection portion.

The invention provides a knee joint prosthesis tibial plateau capable of enhancing fixation and a tool matched with the tibial plateau, the knee joint prosthesis tibial plateau specifically comprises a tibia support, the tibia support is of a hollow cylinder structure, and three convex bodies are fixedly arranged on the outer surface of the tibia support; a groove penetrating into the tibia support is formed in the abutment, and the abutment is fixedly arranged on the tibia support; the pushing device comprises extension rods arranged at the two ends of a worm, the worm with threads arranged on the outer surfaces of the two ends, turbines arranged on the two sides of the worm, upper supporting bodies arranged at the tops of the turbines and connected with the fixing device through first connecting bodies, and lower supporting bodies arranged at the bottoms of the turbines and connected with the fixing device. The fixing device is a hollow cone, a first spring is arranged in the fixing device, one end of the first spring is connected with the first connector, and the other end of the first spring is connected with a fixing block. According to the technical scheme, the technical problem that after the knee joint prosthesis is implanted into the tibia, the tibial plateau is unstable, the prosthesis is loosened and disengaged, and then bone fusion is affected is effectively solved.

A BTE prosthetic device for use in a medical system or prosthesis comprises a connector configured to mechanically attach an auxiliary device of the system to the BTE prosthetic device. The connector is electrically connected to a transceiver of the BTE prosthetic device. The connector operates as an electromagnetic antenna for transmitting and / or receiving signals between the BTE prosthetic and other components of the medical system.

Disclosed is an actuator for hip replacement, which is configured to prepare a space for installing a prosthesis on a bone and implanting the prosthesis. The actuator includes a first actuator and a second actuator. The first actuator is configured to connect a cutting tool to process an acetabulum and / or a medullary cavity, and the first actuator has a first connector and a second connector. The second actuator is configured to connect to the second connector of the first actuator during an operation of implantation of the prosthesis is performed, and connect the prosthesis and receive impact produced during installing the prosthesis. The actuator for the hip replacement is configured to be installed to a robotic arm via the first connector. During the hip joint surgery, when the acetabulum and the medullary cavity are prepared, the robotic arm is connected to the first actuator. When it is necessary to install the prosthesis, the second actuator is connected to the first actuator. By the above configuration, the operation of actuator replacement is capable to be reduced, thereby facilitating completing the hip replacement surgery.

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.

Disclosed are prosthesis systems and methods that provide porous fixation rings by which the articulating surfaces of the implant can be exchanged such that the anatomic surfaces can be converted to reverse surfaces, while not exchanging the fixation components. Also disclosed herein are methods by which the surgeon can implant an inset anatomic articulating glenoid implant whereby at a later date, can remove the anatomic articulating surface and replace it with a reverse articulating surface such that the primary means of fixation remains well fixed in the glenoid fossa at the moment of articular exchange.

Disclosed is a dental implant abutment having a function of buffering occlusal force transmitted through a prosthesis and configured to be elastically coupled to the prosthesis without using an adhesive. A prosthesis fastening protrusion protrudes outward from an outer surface of an upper portion thereof on which a prosthesis is mounted. The diameter of the prosthesis fastening protrusion being greater than the diameter of a portion located directly therebelow. Indentations divide the upper portion of the abutment into a plurality of sections. The indentations continuously extend downward a predetermined length from a top end surface of the abutment. A predetermined lengthwise portion of each of the indentations has a spiral or oblique shape.

The utility model provides a memory prosthesis assembly and electronic equipment, and relates to the technical field of electronic equipment, and the memory prosthesis assembly comprises a memory prosthesis which is used for being inserted into one of a plurality of vacant memory slots arranged along a first direction, the part, exposed out of the memory slot, of the memory prosthesis is provided with a first connecting part on the air inlet side; the mounting bracket extends along the first direction and is provided with a second connecting part which is detachably connected with the first connecting part, and one side, deviating from the memory prosthesis, of the mounting bracket is provided with at least one slot which is not corresponding to the memory prosthesis along the first direction; and the at least one air blocking piece is inserted into the slot along a third direction, and the at least one air blocking piece is used for blocking at least one remaining vacant memory slot position from the air inlet side.

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 embodiment of the invention is suitable for the technical field of computer-aided medical treatment and surgical planning, and provides a single-condyle surgical prosthesis planning method and device and computer device.The method comprises the steps that parameter information of a prosthesis to be planned is obtained, and the parameter information comprises the osteotomy amount; according to the parameter information, determining a placement position of the prosthesis in a pre-constructed three-dimensional model; calculating a coverage rate between a prosthesis section and a corresponding bone section in the three-dimensional model when the prosthesis is located at the placement position; according to the coverage rate, a target prosthesis is determined from the multiple to-be-planned prostheses, and preoperative planning of the unicompartmental condyle operation is carried out based on the target prosthesis. By the adoption of the method, the posture of the prosthesis can be automatically planned according to the osteotomy amount of the prosthesis, then the optimal prosthesis is selected for preoperative planning through calculation of the coverage rate of the section of the prosthesis, and the precision and safety of single-condyle surgery prosthesis planning are guaranteed.

A system including a prosthetic heart valve and a delivery device. The prosthesis includes a stent frame supporting a valve structure. The stent frame is transitionable between compressed and expanded conditions. The delivery device includes outer and inner shaft assemblies. The outer shaft assembly includes a capsule extending distally from an outer shaft. The inner shaft assembly is coaxially received within the outer shaft assembly, and includes an inner shaft, a valve retainer, and a tip unit. A proximal section of the tip unit extends from, and has an outer diameter greater than, the inner shaft. In a delivery state, the prosthesis is contained in the compressed condition over the inner shaft assembly by the capsule, a first region of the stent frame is connected to the valve retainer, and at least a portion of a second region of the stent frame contacts the proximal section of the tip unit.

A bite registration device and method for creating a dental prosthesis, the bite registration device comprising a fixed housing having a bottom surface and a top surface that defines a cavity that houses a yoke assembly and a rotational control assembly. A base plate connected to the bottom surface of the fixed housing, and a lower impression tray to hold a first amount of removable impression putty, attached to the bottom surface of the fixed housing, wherein the rotational control assembly controls the movement of the lower impression tray. An upper impression tray to hold a second amount of removable impression putty, attached to the top surface of the fixed housing, wherein the yoke assembly controls the movement of the lower impression tray. A bite registration device controller for regulating alignment of the upper impression tray and the lower impression tray.

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 an olfactory reconstruction electrical stimulation regulation and control system for a nerve prosthesis, and the system comprises a sensor, an electrode array, a control unit, a signal processing module, a wireless transmission module, an electrode driving module, and a feedback collection module. The olfactory bulb, the olfactory epithelium or the olfactory cortex are electrically stimulated through the array electrode, and the smell sensing process is simulated. According to the invention, olfaction signal transmission is reconstructed by accurately regulating and controlling electrical stimulation parameters, and a patient with olfaction loss is helped to recover perception of surrounding environment smell. The system has the advantages of high precision, controllability, personalized adaptation and the like, and an innovative technical scheme is provided for perception recovery of olfactory deficiency patients.

A prosthesis includes a frame and a skirt coupled to a surface of the frame. The skirt extends over at least one side opening of a plurality of side openings of the frame. The prosthesis also includes a skirt-reinforcement member that spans the at least one side opening from a first crown or strut edge defining the at least one side opening to a second crown or strut edge defining the at least one side opening. The skirt-reinforcement member has a first end, a second end, and a length therebetween. The first end of the skirt-reinforcement member is attached to the first crown or strut edge and the second end of the skirt-reinforcement member is attached to the second crown or strut edge. The skirt-reinforcement member is attached to the skirt along an unsupported portion of the skirt that spans the at least one side opening.

Multi-unit abutments aligning dental implants and a prosthesis with copings have a base for implant attachment with a ball and swivel shell at least partially surrounding the ball. The swivel shell is preferentially inelastically deformed to make contact at or above and below the equator of the ball. The forming process restricts motion to swiveling action when a predetermined torque threshold is exceeded. A tool passing through the lock screw may drive the post of the base into the implant with the multi-unit assembly in a linear configuration. The swivel shell is then positioned and fixed at desired tilt and azimuthal angles. In some embodiments, a lock screw remains accessible through an aperture in the prosthesis when positioned on the implant abutment. Copings may be attached with screws or snap-on features. Methods for improving passive alignment of the prosthesis and implants are described.

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 discloses a bone filling device and belongs to the technical field of medical instruments.The bone filling device comprises a main body module, a vibration module, a mixing module and a discharging module, the main body module comprises a mounting frame, a vibration tank is fixedly connected to the bottom of the inner wall of the mounting frame, and a filling pipe is connected to the bottom of the vibration tank; a lifting groove is formed in the front end face of the mounting frame, a piston rod is slidably connected into the lifting groove, and the bottom end of the piston rod extends into the vibration tank and is fixedly connected with a pressing plate. By means of the structure, internal vibration and external knocking can be conducted on bone cement, so that the bone cement can be loosened to enable bubbles to float upwards, it is avoided that the bubbles are moved and injected to affect the strength of subsequent prostheses, the bone cement injection quality is improved, and the subsequent fracture risk is reduced.

A titanium-zinc mixed structure type degradable jaw bone restoration comprises a titanium alloy force bearing part and a zinc alloy planting part which are printed in a 3D mode, and the titanium alloy force bearing part and the zinc alloy planting part are connected through a connecting part located on the titanium alloy force bearing part and / or the zinc alloy planting part. The titanium alloy part serving as the base is mainly used for bearing force, it is guaranteed that the prosthesis cannot be broken in the using process, the zinc alloy of the upper half part is absorbed in the osteogenesis regulating and controlling process, then bony repair is completed, and planting can be conducted. And the height of the preferable zinc alloy planting part is enough for planting, and meanwhile, the titanium alloy at the lower half part does not influence final planting and can ensure the overall stability.

A computer-implemented method of determining fixation of a prosthesis in bone matter based on bone anatomy and density information comprises generating a three-dimensional model of a bone of a patient for output in a video display unit, adding three-dimensional bone density information for the bone matter to the three-dimensional model, simulating a. preparation of the bone to produce a bone surface on the three-dimensional model, simulating placement of the prosthesis in the bone surface, estimating a fixation strength of the prosthesis to the bone matter using the bone density information at the prosthesis, and outputting indicia on the video display unit that indicates risk factors for displacement, of the prosthesis from the bone matter.

The present dental prosthesis has a palatal implant configured to be implanted subperiosteally and attached to the palatal process by a plurality of fixation screws. The implant has a spine retaining implant magnetic components therealong and having holes for the fixation screws. The prosthesis also has a maxilla denture having a palatal base plate and an alveolar ridge engaging periphery having false teeth installed thereon. The denture is configured to be placed in a mouth to engage a maxilla wherein the alveolar ridge engaging periphery engages an alveolar ridge of the maxilla. The denture comprises a plurality of denture magnetic components configured to align with the implant magnetic components so that the denture is magnetically retained in the mouth by magnetic attraction force between the implant magnetic components and the denture magnetic components.