7results about How to "Implant stability" patented technology

The application provides a valve repair system. A pre-clamping device in the valve repair system comprises a delivery shaft and a clamping assembly. The delivery shaft is provided with an axial delivery cavity and a receiving cavity. The delivery cavity penetrates through opposite ends of the delivery shaft, and the receiving cavity penetrates through the distal end of the delivery shaft. The delivery cavity is used to movably install a suture implant device. The clamping assembly comprises an upper clamping member and a lower clamping member. The upper clamping member comprises an upper clamping push rod movably installed in the receiving cavity and an upper clamping portion arranged at the distal end of the upper clamping push rod. The lower clamping member comprises a lower clamping push rod movably installed in the receiving cavity and a lower clamping portion arranged at the distal end of the lower clamping push rod. The pre-clamping device has a working state. In the working state, the upper clamping portion and the lower clamping portion are located outside the receiving cavity. The upper clamping portion has a first clamping surface, and the lower clamping portion has a second clamping surface. The first clamping surface cooperates with the second clamping surface to clamp a valve leaflet. The area ratio of the first clamping surface and the second clamping surface to the valve leaflet is greater than or equal to 1 / 6 and less than 1.

The present application discloses a method, device, electronic device and storage medium for video advertisement implantation, wherein the method for video advertisement implantation comprises: obtaining corresponding video frames according to a video stream to be played; selecting a target area for implanting advertisements from the video frames; implanting the advertisement frames corresponding to the advertisements to be implanted into the target area of ​​the video frames according to the playback order, and obtaining video frames after the advertisements are implanted; and obtaining a video stream containing advertisements according to the video frames after the advertisements are implanted. The above scheme can improve the exposure rate and acceptance of advertisements.

The utility model discloses a bead planting mechanism of a friction-free negative pressure structure, which comprises a gas distribution disc and a bead planting disc, the gas distribution disc is of a cylindrical structure, the bead planting disc is of a cylindrical structure with one closed end, the bead planting disc can be sleeved on the gas distribution disc, a negative pressure cavity is arranged on the outer ring side wall of the gas distribution disc, and the negative pressure cavity is communicated with the gas distribution disc. A negative pressure opening communicated with the negative pressure cavity is formed in the end face of the end, back on to the bead planting disc, of the air distribution disc, a positive pressure channel is further formed in the air distribution disc, the blasting beads are adsorbed through the adsorption channel in the edge of the bead planting disc, the negative pressure is far larger than the centrifugal force of operation of the negative pressure, and it is guaranteed that the blasting beads can be stably adsorbed to the edge of the bead planting disc; and when the adsorption channel rotates to right face the positive pressure channel, the adsorption force disappears, and the blasting beads are driven to be implanted into the tows. The bead implanting mechanism of the friction-free negative pressure structure has the effect of stably implanting the blasting beads into the tows.

The utility model relates to the technical field of brain-computer interfaces, discloses an electrode for an implantable brain-computer interface and a device thereof, and aims to optimize the contact with the cerebral cortex so as to efficiently and safely capture nerve electrical activity. The electrode design comprises an elastic polymerization layer, a first coating, a metal layer and a second coating, and two morphological structures with different mechanical properties are formed. The first form provides the required mechanical strength through the combination of the metal layer and the first coating, and is suitable for stable implantation; and in the second form, through the configuration of the elastic polymerization layer and the second coating, the softness is enhanced, and the damage to brain tissues is reduced. Due to the unique bimorphic design, the signal transmission efficiency of the electrode can be ensured, meanwhile, the invasion to brain tissues can be minimized, and a new possibility is developed for the application of a brain-computer interface 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.