Ball-hinged elastic internal fixing device implantation instrumentTechnical Field
The invention belongs to the technical field of fixing two opposite bone ends with certain elasticity and strength, and particularly relates to a special instrument for implanting a ball-and-socket elastic internal fixing device and a use method thereof.
Background
For fixation of bone in two adjacent locations, such as fixation of the superior tibiofibular joint, inferior tibiofibular joint, distal ulnar joint, sternoclavicular joint, coracoid collarbone, etc., most of the fixation is currently rigid, such as screw through fixation, etc. Rigid fixation requires the early removal of the fixation to avoid problems such as joint stiffness, screw fracture, etc. There are various problems caused by the rigid fixation while requiring the secondary operation. Therefore, searching for elastic fixation for fixing such special parts is expected to solve such problems, and it is necessary to obtain fixation of sufficient strength for fixing two bone ends, and at the same time, elastic micro-motion within a certain range can be allowed, so as to improve healing of surrounding soft tissues and provide sufficient mechanical environment. Avoiding the extraction of internal fixation, allowing the requirement of early part load and reducing the occurrence of complications.
The invention aims to provide an instrument for conveniently implanting a ball-hinged elastic internal fixing device and a use method thereof.
Disclosure of Invention
The invention aims to provide an instrument for implanting a ball-and-socket elastic internal fixing device, which can fix two bone ends which need to be dynamically pressurized and then fix two bones with certain elasticity and strength.
In order to solve the technical problems, the invention is realized by adopting the following technical scheme:
The implanting instrument comprises a kinking device, a driving device and a depth limiting drill, and the ball-and-ball-kinking elastic internal fixing device is implanted into bone by utilizing the structural combination.
The implanting instrument of the ball-and-bead twisted elastic internal fixing device is made of metal or alloy and consists of a twister, a driver and a depth-limiting drill. The kink device is divided into a handle and a kink rod, the handle is in a hexagonal prism shape, a cylindrical hollow part is arranged in the middle of the handle, and two longitudinal wire slots are arranged at two sides of the handle. One end of the handle is connected with 2 kinking rods which are in a slender metal rod shape, one end of the handle is a tip, and the middle part of each kinking rod is outwards convexly curved. The driving device consists of a handle, a rod and a head, wherein the handle is a disc-shaped expansion part, the rod is connected with the middle part of the handle, one end of the rod is externally threaded, one end of the head is cylindrical, and the head is internally threaded and can be matched with the external thread of the rod; the other end of the head is bifurcated. One end of the depth limiting drill is a cylindrical drill bit, and a certain distance from the tip of the drill bit is provided with bulges extending to two sides.
The ball-and-bead-twisted elastic internal fixing device is implanted into an instrument, the handle of the twister is in a hexagonal prism shape, and the middle part of the handle is provided with a cylindrical hollow part.
The ball-and-bead-twisted elastic internal fixing device is implanted into the instrument, and two longitudinal wire grooves are formed on two sides of the handle of the twister.
The ball-point twisted elastic internal fixing device is implanted into the instrument, one end of the twisted rod is a tip, and the middle part of the twisted rod is outwards convexly curved.
The ball-and-socket elastic internal fixation device described above is implanted in an instrument, with one end of the driver rod being externally threaded.
The ball-hinged elastic internal fixing device is implanted into an instrument, and one end of the head of the driver is cylindrical and provided with internal threads.
The ball-and-socket elastic internal fixation device described above is implanted in a device, and the other end of the driver head is bifurcated.
The ball-and-socket elastic internal fixation device described above is implanted in a device in which the depth-limiting drill has protrusions extending to both sides at a distance from the drill tip.
The ball-hinged elastic internal fixation device implantation instrument described above is made of metal or alloy.
With the structure, the ball-and-bead hinge type elastic internal fixing device can be conveniently implanted.
Compared with the prior art, the invention has the advantages and positive effects that:
the implanting instrument of the ball-hinged elastic internal fixing device can conveniently hold, screw and implant the ball-hinged elastic internal fixing device by using a special-designed twister and a special-designed driving device. The tip of the twisting rod is inserted into 2 twisting holes of the twisting beads, so that the rotation of the twisting rod can be effectively controlled, and a large moment can be generated when the handle is rotated to twist the fixing wire, thereby facilitating the twisting of the fixing wire. The middle part of the kink rod is outwards convexly curved, so that a larger operation space is provided. The driver rod and head combined design is more advantageous for holding and driving in the bead riding nail. The ball-hinged elastic internal fixing device is convenient to use, simple to operate and novel and reasonable in design.
Other features and advantages of the present invention will become more apparent from the following detailed description of embodiments of the present invention, which is to be read in connection with the accompanying drawings.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic front view of an embodiment of an implantation instrument for a ball-and-socket elastic internal fixation device according to the present invention;
FIG. 2 is a schematic side view of an embodiment of an implantation instrument for a ball-and-socket elastic internal fixation device according to the present invention;
FIG. 3 is a schematic perspective view of an embodiment of an implantation instrument for a ball-and-socket elastic internal fixation device according to the present invention;
Fig. 4 is a front view of the hinge of the present invention;
figure 5 is a side view of the hinge of the present invention;
Fig. 6 is a schematic perspective view of a hinge according to the present invention;
FIG. 7 is a schematic diagram showing a second perspective structure of the hinge device according to the present invention;
FIG. 8 is a front view of the head of the impactor of the invention;
FIG. 9 is a schematic perspective view of the driver head of the present invention;
FIG. 10 is a front view of the handle portion and shaft portion of the impactor of the invention assembled;
FIG. 11 is a schematic view of an explosive structure of the impactor according to the invention;
fig. 12 is a front view of the depth-limiting drill of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.
Currently, the fixation of bone in two adjacent parts, which is the mainstream in the world, belongs to the category of rigid fixation, such as the upper tibiofibular joint, the lower tibiofibular joint, the distal ulnar joint, the sternoclavicular joint, the coracoid collarbone, and the like, but can cause various problems such as joint stiffness, pain, screw fracture, and the like. Therefore, it is important to explore elastic fixation for such special site fixation. The novel fixing mode can fix two bone ends which need to be dynamically pressurized, so that fixing with certain elasticity and strength on two bones is generated, and the fixing strength can be adjusted, so that the occurrence probability of complications is reduced. The invention provides a device for conveniently and effectively implanting the ball-hinged elastic internal fixing device and a specific using method thereof.
The implementation mode of the invention is specifically described below by way of specific embodiments with reference to the accompanying drawings:
Referring to fig. 1-3, there is shown a schematic view of an embodiment of an implanting apparatus for a ball-and-socket elastic internal fixation device according to the present invention, the implanting apparatus comprises a twister 10, a driver 20, and a depth drill 30, and the ball-and-socket elastic internal fixation device is implanted into bone using the above-mentioned structural combination.
As shown in fig. 4-7, the kink device 10 comprises a handle 11 and a kink rod 12, the handle 11 is in a hexagonal prism shape, a cylindrical through hole 13 is arranged in the middle, and two longitudinal wire slots 14 are arranged on two sides of the handle 11. The twisted rod 12 comprises two twisted rods, which are connected to one end of the handle 11, the twisted rod 12 is in a slender metal rod shape, one end is a tip, and the middle part of the twisted rod 12 is in an outwards convex curved structure.
As shown in fig. 8-11, the driver 20 includes a handle portion 21, a shaft portion 22 and a head portion 23, wherein the handle portion 21 is a disc-shaped enlarged portion, the shaft portion 22 is centrally connected with the handle portion 21, one end of the shaft portion 22 is provided with external threads 24, one end of the head portion 23 is cylindrical, one end of the head portion 23 is provided with internal threads 25, the head portion is matched with the external threads 24 at one end of the shaft portion 22, and the other end of the head portion 23 is in a bifurcated structure.
As shown in fig. 12, the depth limiting drill 30 has a cylindrical drill 31 at one end thereof, and a protrusion 32 extending to both sides at a distance from the drill tip.
The ball-and-bead hinge type elastic internal fixing device can be conveniently and effectively implanted by utilizing the embodiment.
In use, as shown with reference to fig. 1-3, two bones to be secured, such as the distal ulnar joint, tibiofibular joint, clavicle coracoid process, etc., are exposed and temporarily repositioned to a relatively desired anatomical location. (the embodiment illustrated here, wherein the hinge beads 40 and the riding nails 50 of FIGS. 1-3 are structural parts of a bead hinge type elastic internal fixation device, that is, the structural parts to be implanted using the implantation apparatus of the present invention), bone holes are drilled in bone on one side by a depth limiting drill 30, the depth of which is similar to the height of the hinge beads 40, and the hinge beads 40 are placed in the rough holes so that the bottom planes thereof are inward. Two fixed wires with certain elasticity in the lateral wire grooves at the side of the kinking bead 40 are placed into the wire groove 14 of the handle of the kinking device 10, and are temporarily knotted and fixed at the bottom of the handle 11. The 2 tips of one end of the hinge rod 12 are inserted into the hinge holes at the top of the hinge beads 40, respectively, and the handle 11 is rotated clockwise until the fixing wire is tightened to a desired fixing strength. The impactor head 23 was bifurcated and inserted on either side of the beaded nail 50, the beaded nail 50 was held, and the beaded nail 50 was placed over the hinge bead 40 with the two tips of the beaded nail 50 on the bone surfaces on either side of the bone hole in a direction perpendicular to the 2 tips of the hinge 10. The rod 22 of the impactor is inserted into the cylindrical through hole 13 in the middle of the kink device 10, and the external thread 24 at one end of the rod is screwed into the internal thread 25 at one end of the impactor head 23, so that the rod is connected. The striker handle portion 21 is struck to bring the bead riding nail 50 into bone to a proper depth, with the square boss below the lateral arm of the bead riding nail 50 inserted into the square fixing hole at the top of the hinge bead 40. And then knotting and fixing the fixing wire in the grooves on the lateral side and the upper side of the cross arm of the bead riding nail to finish the fixing.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.