CN211862938U

CN211862938U - Elastic internal fixing device implantation instrument

Info

Publication number: CN211862938U
Application number: CN201922135575.5U
Authority: CN
Inventors: 张海宁; 冷萍
Original assignee: Affiliated Hospital of University of Qingdao
Current assignee: SHANGHAI LONGHUI MEDICAL TECHNOLOGY Co.,Ltd.
Priority date: 2019-12-03
Filing date: 2019-12-03
Publication date: 2020-11-06
Anticipated expiration: 2029-12-03

Abstract

The utility model provides an elasticity internal fixation device implants apparatus, implant apparatus including the kink ware, hit into ware, depth-limiting drill, utilize above-mentioned structural grouping, implant the sclerotin with ball kink formula elasticity internal fixation device. The handle of the twister is in a hollow hexagonal prism shape, and two longitudinal wire grooves are formed in two sides of the twister. One end of the handle is connected with 2 knotting rods, and the middle part of the handle is outwards convexly bent. The handle and the head of the impactor are assembled and connected by threads, and one end of the head is bifurcated. The depth-limiting drill is provided with a bulge extending towards two sides at a certain distance from the tip end of the drill bit. The apparatus can be used for conveniently and effectively installing, screwing and implanting the ball-twisting type elastic internal fixing device.

Description

Elastic internal fixing device implantation instrument

Technical Field

The utility model belongs to the technical field of it is fixed to have certain elasticity and intensity to two relative bone ends concurrently, especially a special apparatus with ball hank knot formula elasticity internal fixation device implantation and application method thereof.

Background

For fixation of two adjacent parts of bone, for example, the superior tibiofibular joint, the inferior tibiofibular joint, the distal ulnar joint, the sternoclavicular joint, the coracoid clavicle, etc., most of the fixation is now rigid fixation, such as screw-through fixation, etc. Rigid fixation needs to be realized by pulling out the fixture in advance so as to avoid the problems of joint stiffness, screw fracture and the like. When a secondary operation is needed, various problems caused by rigid fixation can be caused. Therefore, the exploration of elastic fixation for fixing the special parts is expected to solve the problems, and the fixation with enough strength for fixing two bone ends is required, and meanwhile, the elastic micromotion in a certain range is allowed, the healing of surrounding soft tissues is improved, and a sufficient mechanical environment is provided. The removal of the internal fixation is avoided, the requirement of early part load is met, and the occurrence of complications is reduced.

The utility model aims to provide an apparatus and a using method which are convenient for implanting the ball-twisting elastic internal fixation device.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an apparatus for implanting ball-twisting type elastic internal fixation device, which is capable of generating fixation with certain elasticity and strength to two bones after fixing two bones which need to be dynamically pressurized.

In order to solve the technical problem, the utility model discloses a following technical scheme realizes:

an implantation instrument for an elastic internal fixing device comprises a twister, a driver and a depth limiting drill, and the ball twister type elastic internal fixing device is implanted into a bone by utilizing the structural combination.

The implantation instrument of the elastic internal fixing device is made of metal or alloy and consists of a twister, a driver and a depth limiting drill. The twister is divided into a handle and a twisting rod, the handle is hexagonal prism-shaped, the middle part of the handle is provided with a cylindrical hollow part, and two longitudinal wire grooves are arranged on two sides of the handle. One end of the handle is connected with 2 knotting rods which are in a shape of a slender metal rod, one end of each knotting rod is a tip, and the middle parts of the knotting rods are outwards convexly bent. The impactor 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, and one end of the head is cylindrical and internally threaded and can be matched with the external threads of the rod; the other end of the head part is in a fork shape. One end of the depth-limiting drill is a cylindrical drill bit, and the certain distance from the tip of the drill bit is a bulge extending towards two sides.

The elastic internal fixation device implanting instrument has the advantages that the handle of the twister is hexagonal prism-shaped, and the middle part of the twister is provided with a cylindrical hollow part.

The elastic internal fixing device implantation instrument is characterized in that two longitudinal wire grooves are formed in two sides of the handle of the twister.

According to the implantation instrument for the elastic internal fixation device, one end of the knotting rod is a pointed end, and the middle part of the knotting rod is convexly bent outwards.

The elastic internal fixation device implantation instrument is characterized in that one end of the impactor rod is externally threaded.

The implantation instrument of the elastic internal fixation device has the advantages that one end of the impactor head is cylindrical and is internally provided with threads.

The implantation instrument of the elastic internal fixation device is characterized in that the other end of the impactor head is bifurcated.

The elastic internal fixation device implanting instrument is characterized in that the depth stop drill is provided with a bulge extending towards two sides at a certain distance from the tip end of the drill bit.

The elastic internal fixation device implanting instrument as described above, which is made of metal or alloy.

By utilizing the structure, the ball-twisting elastic internal fixing device can be conveniently implanted.

Compared with the prior art, the utility model discloses an advantage is with positive effect:

the utility model discloses elasticity internal fixation device implants apparatus can utilize unique kinking ware of design and drive ware can conveniently control, screw and implant ball kinking formula elasticity internal fixation device. The tip of the knotting rod is inserted into 2 knotting holes of the knotting bead, the rotation of the knotting rod can be effectively controlled, and the rotating handle is used for tightly twisting the fixing wire to generate larger torque so as to facilitate the tight twisting of the fixing wire. The middle part of the twisted rod is outwards convexly bent, so that a larger operation space is provided. The assembled design of the driver rod and the head is more beneficial to holding and driving the ball riding nail. The utility model discloses elasticity internal fixation device implants apparatus and uses more conveniently, easy operation, and novel in design is reasonable.

Other features and advantages of the present invention will become more apparent from the following detailed description of embodiments of the invention, which is to be read in connection with the accompanying drawings.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

FIG. 1 is a front view of an embodiment of an implanting apparatus for an internal elastic fixation device according to the present invention;

FIG. 2 is a schematic side view of an embodiment of the flexible internal fixation device implantation apparatus of the present invention;

FIG. 3 is a perspective view of an embodiment of the implantation device of the internal elastic fixation device according to the present invention;

FIG. 4 is a front view of the twister of the present invention;

FIG. 5 is a side view of the twister of the present invention;

fig. 6 is a schematic perspective view of the first knotter of the present invention;

fig. 7 is a schematic perspective view of the second embodiment of the knotter of the present invention;

FIG. 8 is a front view of the impactor head of the invention;

FIG. 9 is a schematic perspective view of the driver head of the present invention;

FIG. 10 is an assembled front view of the handle portion and shaft portion of the impactor of the present invention;

fig. 11 is a schematic diagram of the explosive structure of the impactor of the present invention;

fig. 12 is a front view of the depth stop drill of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the embodiments described herein are merely for the purpose of illustrating the invention and are not intended to limit the invention.

Currently, the international mainstream of fixation of two adjacent bone parts belongs to the category of rigid fixation, such as an upper tibiofibular joint, a lower tibiofibular joint, a distal ulnar joint, a sternoclavicular joint, a coracoid clavicle and the like, but many problems such as joint stiffness, pain, screw fracture and the like can be caused. Therefore, it is important to explore elastic fixation for such specific site fixation. The novel fixing mode can be used for fixing two bone ends which need to be dynamically pressurized, and fixing two positions of bones with certain elasticity and strength can be achieved, and the fixing strength can be adjusted, so that the occurrence probability of complications is reduced. The utility model provides an apparatus which can conveniently and effectively implant the ball-twisting elastic internal fixation device and a specific using method thereof.

The following description will specifically explain the implementation of the present invention by way of specific embodiments with reference to the accompanying drawings:

referring to fig. 1-3, there is shown a schematic diagram of a specific application structure of an embodiment of an implantation instrument for an elastic internal fixation device according to the present invention, the implantation instrument includes a twister 10, an impactor 20, and a depth-limiting drill 30, and the ball-twisting type elastic internal fixation device is implanted into a bone by using the above structural combination.

As shown in fig. 4-7, the knotter 10 includes a handle 11 and a knotting rod 12, the handle 11 is hexagonal prism shaped, a cylindrical through hole 13 is formed in the middle of the handle 11, and two longitudinal wire grooves 14 are formed in two sides of the handle 11. The knotting rod 12 comprises two knotting rods which are connected to one end of the handle 11, the knotting rod 12 is in a shape of a long and thin metal rod, one end of the knotting rod is a tip, and the middle of the knotting rod 12 is in a structure which is convex outwards and bent.

As shown in fig. 8 to 11, the impactor 20 includes a handle 21, a shaft 22 and a head 23, the handle 21 is a disk-shaped enlarged portion, the shaft 22 is connected to the center of the handle 21, one end of the shaft 22 has an external thread 24, one end of the head 23 is cylindrical and has an internal thread 25 matching the external thread 24 at one end of the shaft 22, and the other end of the head 23 is bifurcated.

As shown in fig. 12, the depth stop drill 30 has a cylindrical drill 31 at one end thereof and a protrusion 32 extending from both sides at a predetermined distance from the tip of the drill.

The ball-twisting elastic internal fixing device can be conveniently and effectively implanted by utilizing the embodiment.

In application, referring to fig. 1-3, two bones needing to be fixed, such as a distal ulnar joint, a tibiofibular joint, a clavicular coracoid process and the like, are exposed and temporarily restored to a relatively ideal anatomical position. (Here, the hinged ball 40 and the ball riding nail 50 in FIGS. 1-3 are the structural parts of the ball hinged elastic internal fixation device, i.e. the structural parts to be implanted by the implantation instrument of the present invention) on the bone on one side, a bone hole is drilled by a depth-limiting drill 30, the depth of which is similar to the height of the hinged ball 40, and the hinged ball 40 is placed in the thick hole, so that the bottom plane faces inwards. Two fixing threads with certain elasticity in the thread grooves on the sides of the twisting beads 40 are placed in the thread grooves 14 of the handle of the twister 10, and are temporarily knotted and fixed at the bottom of the handle 11. 2 tips at one end of the knotting rod 12 are respectively inserted into the knotting holes at the top of the knotting bead 40, and the handle 11 is rotated clockwise until the fixing thread is screwed down to reach the expected fixing strength. The head part 23 of the impactor is forked and inserted into two sides of the bead riding nail 50, the bead riding nail 50 is held, the bead riding nail 50 is placed above the knotting bead 40, two tips of the bead riding nail 50 are positioned on bone surfaces at two sides of a bone hole, and the direction of the two tips is vertical to 2 tips of the knotting device 10. The rod part 22 of the impactor is inserted into the cylindrical through hole 13 in the middle of the twister 10, and the external thread 24 at one end of the rod part is screwed into the internal thread 25 at one end of the impactor head part 23, so that the impactor and the head part are connected. The driver handle portion 21 is struck to drive the ball riding nail 50 into the bone to a suitable depth, and the square protrusion below the crossbar of the ball riding nail 50 is inserted into the square fixing hole at the top of the hinged ball 40. And then the fixing wire is knotted and fixed in the grooves at the side and above the cross arm of the bead riding nail to finish the fixation.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. An elastic internal fixation device implantation instrument, characterized in that: the implanting instrument comprises a twister, a driver and a depth limiting drill, and the ball twister type elastic internal fixing device is implanted into a bone by utilizing the structural combination;

the twister comprises a handle and a twisting rod, wherein the handle is in a hexagonal prism shape, and a cylindrical through hole is formed in the middle of the handle; the two twisting rods are connected to one end of the handle, the twisting rods are in a long and thin metal rod shape, one end of each twisting rod is a tip end, and the middle parts of the twisting rods are in outwards protruding bending structures;

the impactor comprises a handle part, a rod part and a head part, wherein the handle part is a disc-shaped expansion part, the rod part is connected with the center of the handle part, and one end of the rod part is externally threaded; one end of the head part is cylindrical and is provided with internal threads, the head part is matched with the external threads at one end of the rod part, and the other end of the head part is of a forked structure;

one end of the depth limiting drill is a cylindrical drill bit, and the certain distance from the tip end of the drill bit is a bulge extending towards two sides.

2. The elastic internal fixation device implantation instrument of claim 1, wherein: two longitudinal wire grooves are formed in two sides of the handle.

3. The elastic internal fixation device implantation instrument of claim 1, wherein: the elastic internal fixation device implantation instrument is made of metal or alloy.