13 results about "Abutment Screw" patented technology

The invention relates to the field of medical instruments, and provides a conicity-locked osseointegration prosthesis. The osseointegration prosthesis comprises an implantation prosthesis, a percutaneous device and an abutment screw, a plurality of fixing ridges are arranged on the periphery of the implantation prosthesis, intraosseous fixation is achieved in a press-fit mode, a taper locking structure is combined to prevent the implantation prosthesis from sinking, and it is ensured that the position of the implantation prosthesis is fixed after implantation; a flushing hole communicated with the internal flushing cavity is further formed in the periphery of the implant prosthesis, and the implant prosthesis can be used for injecting medicine into the medullary cavity, implanting bone materials and the like or used for follow-up flushing treatment for intramedullary infection possibly occurring in the later period. The percutaneous device and the implanted prosthesis are connected through the anti-rotation structure and the taper locking structure, the percutaneous section has the surface state formed through surface treatment, stimulation to surrounding soft tissue is reduced, the anti-infection capacity is improved, and the percutaneous sealing effect is improved. By optimizing the implantation structure and the percutaneous interface design, the intraoperative operation difficulty is reduced, the intraoperative time is shortened, meanwhile, the percutaneous stoma is reduced, and the infection risk is reduced.

The present invention relates to a dental implant structure for preventing the sinking of the dental implant superstructure and preventing the loosening of the abutment screw, and in particular, relates to a dental implant structure for preventing the sinking of the dental implant superstructure and preventing the loosening of the abutment screw that, by ensuring that the abutment and the connection screw section are fastened without a gap, prevents a distorting phenomenon of the abutment's interior, despite repeated chewing. In the present invention, since the abutment and the inside of the abutment are each formed in a tapered shape and the connection screw section is fastened to the abutment without a gap between the two when the connection screw section is fastened, the distorting phenomenon of the inside of the abutment can be prevented, even with repeated chewing. Moreover, since the abutment and the inside of the abutment are each formed in a tapered shape, the loosening phenomenon of the connection screw is minimized, even with repeated chewing.

Dental screwdriver (1) which is designed to connect an abutment screw (55) of a superstructure abutment to a dental implant, with a shaft (15) having a proximal end (10) and a distal end (20), wherein a handle (5) is located at the proximal end (10), characterized in that the shaft (15) is flexible.

A local coating jig of an abutment screw for oral implantation comprises a main body, a multi-stage screw rod and a limiting nut. The abutment screw comprises a rod part with a transition conical surface and a head part with a first threaded blind hole. The main body is provided with a second threaded blind hole with an upward opening. The multi-stage screw has an upper threaded rod portion, a middle threaded rod portion, and a lower threaded rod portion. The upper threaded rod part is used for being in threaded connection with a first threaded blind hole in the head of the abutment screw, and the lower threaded rod part is in threaded connection with a second threaded blind hole of the body. The limiting nut is provided with a central through hole, an inner threaded hole in threaded connection with the middle threaded rod portion of the multi-stage screw is formed in the lower portion of the central through hole, and a sealing conical surface consistent with the transition conical surface of the rod portion of the abutment screw in shape is formed in the upper portion of the central through hole. And the minimum inner diameter of the sealing conical surface is equal to the maximum outer diameter of the transition conical surface. The coating jig disclosed by the utility model can quickly and flexibly realize effective protection of local parts such as heads of various abutment screws.

For the purpose of increased flexibility and ease of use of a dental screwdriver (1) designed to connect an abutment screw (55) of a suprastructure abutment to a dental implant, and which has a shaft (15) having a proximal end (10) with a handle (5) and a distal end (20), the shaft (15) is designed to be flexible. A method for manufacturing a dental screwdriver (1) provides that its shank (15) is thermally and / or mechanically treated, and / or that its shank (15) is provided with at least one taper (30, 35), and / or that at least one section of the shank (15) located away from the proximal end (10) and / or the distal end (20) is subjected to mechanical treatment such that the strength of the section is greater than the strength of the shank (15) in the region of the proximal end (10) and / or the distal end (20).

The utility model relates to the technical field of screw joint testing, in particular to a screw joint pull-off clamp suitable for shearing performance testing, which comprises a joint main body and two groups of clamping seats distributed in bilateral symmetry, end part clamping tables are fixed on the side walls of the clamping seats, and internal thread seats are arranged at the tops of the clamping seats. According to the utility model, the clamping seat is arranged on a clamping jaw arm on shearing performance testing equipment, then the two ends of the joint main body are respectively inserted into the outer sides of the expansion clamps, and at the moment, the forward and reverse motor is started to drive the bidirectional screw rod to rotate, so that the expansion clamps are connected with the clamping seat; the two groups of bidirectional screw rod threads with opposite threads drive the two groups of screw rod sliding sleeves to move reversely until the two groups of expansion clamps completely support the joint main body from the inside, so that the whole structure ensures that the screw joint is firmly grasped, the joint is prevented from shifting or falling off in the testing process, the accurate application of shearing force in the testing process is ensured, and the testing efficiency is improved. And the test error caused by the movement of the joint is avoided.

An oral cavity bone column retention screw comprises a fixing part for increasing the contact area with the bone column to fix it, and a screw body for fixing to the bone structure inside the oral cavity. The fixing part is connected to the top end of the screw body; the surface of the screw body is provided with self-tapping threads; the screw body is connected to the edge of the fixing part. The screw body is provided with a screw head and a threaded rod, the screw head being integrally connected to the top end of the threaded rod; the fixing part is fixedly connected to the top end of the threaded rod; the fixed connection is fused or welded; the screw head is fixedly embedded in the upper surface of the fixing part. This oral cavity bone column retention screw can increase the locking area with the bone column, disperse the stress on the bone column, avoid secondary damage to the bone column during operation, and can also adapt to complex bone surface morphologies.

The invention relates to a device for the cortical fixation of a dental implant, which can increase primary stability and allows a freely selectable rotational position of the superstructure independent of the longitudinal rotation of the implant. The assembly consists of a coronal part 1, which can be firmly connected to a superstructure, for example, an osteosynthesis plate 3 and / or a dental crown 10, and an apical part 2, which forms the implant connection and can be connected to the coronal part 1 via a conical connection 4. An abutment screw 6 is rotatably and positively retained in the coronal part 1, extends through the apical part 2, and can be screwed into the implant 9 via a thread.This allows rotation of the coronal part 1 and thus precise positioning of the osteosynthesis plate 3 on the jawbone 8 until the abutment screw 6 is tightened, generating an apically directed force and enabling a form-fit and force-fit fixation in the area of ​​the conical connection 4. The osteosynthesis plate 3 can then be fixed to the jawbone 8 to improve primary stability during the healing phase of immediately loaded implants.

The utility model provides an infusion support combined assembly. The infusion support combination assembly comprises a sleeve, a telescopic rod and a plurality of infusion hooks, the telescopic rod is slidably installed in the sleeve, the infusion hooks are fixedly installed at the top end of the telescopic rod, the infusion support combination assembly further comprises an N-shaped sleeve, a fixed insertion barrel is arranged on the N-shaped sleeve, the sleeve is located in the fixed insertion barrel, a plurality of abutting screws are installed on the outer wall of one side of the N-shaped sleeve in a threaded mode, and the abutting screws are connected with the N-shaped sleeve. One end of each abutting screw rod extends into the corresponding N-shaped sleeve, a fastening screw rod is installed on the outer wall of the fixed insertion barrel in a threaded mode, and one end of the fastening screw rod extends into the fixed insertion barrel and makes contact with the corresponding sleeve. The infusion support combination assembly has the advantages that the infusion support combination assembly can be combined with a common seat in a hospital corridor to conduct infusion on a weak patient, the problem that a bed and a special infusion seat are insufficient when the number of persons to be infused is large is solved, use is reliable, and operation is easy.

The invention relates to a device for the cortical fixation of a dental implant, which can increase primary stability and allows a freely selectable rotational position of the superstructure independent of the longitudinal rotation of the implant. The assembly consists of a coronal part 1, which can be firmly connected to a superstructure, for example, an osteosynthesis plate 3 and / or a dental crown 10, and an apical part 2, which forms the implant connection and can be connected to the coronal part 1 via a conical connection 4. An abutment screw 6 is rotatably and positively retained in the coronal part 1, extends through the apical part 2, and can be screwed into the implant 9 via a thread.This allows rotation of the coronal part 1 and thus precise positioning of the osteosynthesis plate 3 on the jawbone 8 until the abutment screw 6 is tightened, generating an apically directed force and enabling a form-fit and force-fit fixation in the area of ​​the conical connection 4. The osteosynthesis plate 3 can then be fixed to the jawbone 8 to improve primary stability during the healing phase of immediately loaded implants.

The utility model provides a cavity for a titanium sponge crusher, which comprises a frame body, a crushing shaft is arranged in the frame body, and a feeding frame is fixedly mounted at the top of the frame body; the mounting assembly is arranged on one side of the frame body, the mounting assembly comprises a fixing plate, and the fixing plate is arranged on one side of the frame body. According to the cavity for the titanium sponge crusher, through mutual cooperation of the mounting assembly, the moving assembly, the fixed cutter and other structures, when the fixed cutter is disassembled and replaced, only the abutting screw needs to be rotated, so that one end of the abutting screw is far away from the fixed plate, and the fixed cutter can be disassembled and replaced; and then the fixing plate is moved towards the side away from the frame body, so that the fixed cutter is moved out of the inner side face of the frame body, then the bottom of the locking screw is in threaded connection with the interior of the top of the fixing base, the fixed cutter can be moved out of the inner side face of the mounting groove, the fixed cutter is detached and replaced, and operation is convenient and fast.

The utility model relates to the technical field of automatic torsiometers, and discloses an automatic torsiometer for a dental abutment screw, which comprises a base, the top of the base is fixedly connected with a support frame, the top of the base is fixedly connected with a guide post, the inside of the base is electrically connected with a control switch, the inside of the support frame is rotatably connected with a threaded post, and the threaded post is fixedly connected with the guide post. A hand wheel is fixedly connected to the top end of the threaded column, a testing assembly is arranged on the outer wall of the guide column and used for testing the torsion of the screw, and a fixing assembly is arranged on the top of the base and used for fixing the screw. According to the utility model, the hand wheel and the threaded column drive the testing head to move, and the motor drives the testing head to test the screw, so that the effect of automatically testing screws with different lengths is realized, and the problems that the consistency of the testing position and angle each time is difficult to ensure when the torsion of the screw of the dental abutment is manually tested are solved. And the torsion test result has a large deviation.

The invention relates to the technical field of medical instruments, and discloses an abutment screw channel filling material preparation process, which comprises: mixing polytetrafluoroethylene resin, an extrusion auxiliary agent and a functional pore-foaming agent to obtain a pasty mixture; sequentially performing pre-forming, extrusion forming and stretching orientation on the pasty mixture to obtain thin strips; carrying out high-temperature sintering and shaping on the thin strips to obtain expanded polytetrafluoroethylene thin strips containing the functional pore-foaming agent; cleaning the expanded polytetrafluoroethylene thin strips by adopting a solvent so as to selectively remove the functional pore-foaming agent; and finally drying to obtain the filling material. According to the method, a specific pore structure is formed in the final material, so that the prepared filling material has high compression resilience performance and physical sealing performance, can be tightly and physically attached to the inner wall of a screw channel of an abutment and effectively hinders liquid permeation, and the material has low substance precipitation rate and ensures the application stability of the material.