3results about How to "Implant stability" patented technology

The application relates to the technical field of orthopedic artificial joint, in particular to an integrated unicompartmental prosthesis system and a preparation method of the integrated unicompartmental prosthesis system. The integrated unicompartmental prosthesis system comprises a femoral condyle prosthesis, a tibial plateau prosthesis and a tibial plateau pad prosthesis; the femoral condyle prosthesis and the tibial plateau prosthesis are both made of a zirconium niobium alloy 3D printing; the tibial plateau pad prosthesis is made of a zirconium niobium alloy 3D printing or a zirconium niobium alloy forging; the upper surface of the femoral condyle prosthesis is in contact with the tibial plateau pad prosthesis, and the upper surface of the tibial plateau prosthesis is in contact with the lower surface of the tibial plateau pad prosthesis. The bone integration interfaces of the integrated unicompartmental prosthesis system are all formed by zirconium niobium alloy trabecular structures, and the friction contact surfaces between the prostheses are all metal ceramic interfaces formed by zirconium niobium surface oxidation, so that the bone resection amount of the tibial plateau can be reduced, the wear resistance of the friction interface can be improved, the wear debris of the friction interface can be greatly reduced, and the stability of the prosthesis in the later period is improved.

The application provides a twice clamping valve repair device, which comprises a pushing catheter, a chuck assembly and a pre-clamping assembly. The chuck assembly comprises a chuck push rod movably arranged in the pushing catheter, a proximal chuck and a distal chuck which can be opened and closed relative to each other. The pre-clamping assembly comprises an upper clamping piece and a lower clamping piece. The upper clamping piece comprises an upper push rod and an upper clamping part arranged at the distal end of the upper push rod. The lower clamping piece comprises a lower push rod and a lower clamping part arranged at the distal end of the lower push rod. The valve repair device has a working state. In the working state, the upper clamping part has a first clamping surface, the lower clamping part has a second clamping surface, the first clamping surface and the second clamping surface cooperate to clamp the valve leaflet, and the proximal chuck and the distal chuck cooperate to clamp the valve leaflet again. The ratio of the area of the first clamping surface to the area of the valve leaflet and the ratio of the area of the second clamping surface to the area of the valve leaflet are both greater than or equal to 1 / 6 and less than 1, so that the valve leaflet can be prevented from being folded and the effect of the operation can be ensured.

The utility model discloses an electric intraocular lens implanting system which comprises an injector outer shell, an injector rear shell, a push needle, a power system and a power supply system, the injector outer shell and the injector rear shell play a role in protection, the push needle is used for pushing out an intraocular lens, the power system is used for providing power for the whole injection process, and the power supply system is used for providing energy for the power system. The power system and the power supply system are installed in the injector outer shell, the power system is connected with the power supply system, part of the power system and the whole power supply system are wrapped in the injector rear shell, the tail end of the injector rear shell is provided with a USB charging outer hole, and the USB charging outer hole is connected with an external wired charger. The speed in the injection process is uniform, stable and controllable, and the deformation of the artificial lens is controllable, so that scratching and tearing are reduced, the risk in the implantation process is reduced, the implantation success rate is improved, in addition, a large amount of training on doctors can be reduced, and the workload of the doctors can be reduced.