CN204446067U - Modular support inner fixing device - Google Patents

Abstract

The utility model discloses a combined bracket internal fixing device, which comprises a fixing rod, a connecting hook, a top wire and a screw. It is characterized in that annular grooves or spiral grooves are evenly distributed on the surface of the fixing rod, and at least one locking hole or pressure hole is provided at both ends or the flat part of one end, and the connecting hook is a single-rod connecting hook or a double-rod connection. hook, the single-rod connecting hook is an open slot, and at least one locking hole and a top wire hole are provided on its main plane; the double-rod connecting hook is an open slot and a circular rod hole, and at least one A locking hole and a top screw. The connecting hook device of the utility model is an open hook groove, which facilitates the free assembly of screws, connecting hooks and fixing rods to form a stable bracket device, which is beneficial to reset and connect the fracture fragments to form a rigid bracket for fixation, and is suitable for human bones. The overall anatomical structure is conducive to fracture healing. The effect of reduction and fixation is enhanced, the indications are expanded and the occurrence of complications is reduced.

Description

Combined bracket internal fixation device

technical field

The utility model relates to the technical field of medical devices, in particular to an internal fixation device for a combined bracket suitable for bone correction in a fractured state.

Background technique

With the emergence of Pasteur physical disinfection method and the invention of chemical disinfectant by Joseph Lister in 1867, surgical aseptic technology has been greatly developed, creating basic conditions for the development of orthopedic internal fixation surgery. In the 1940s and 1950s, despite some brilliant inventors and technological innovations in the field of internal fixation of fractures, there was no standard formula for how to perform surgical treatment. Under such historical conditions, the AO group proposed the principle of fracture compression fixation and established systematic fracture internal fixation techniques and methods. On this basis, a large number of products have been developed and produced, various types of compression, locking, anatomical, etc., and Liss plates have been used clinically, and the series of pulp nails have also been widely used.

With the birth of various implant products, clinical symptoms have been solved, but as far as the market technology is mature, it has caused a lot of trouble to the operation. The wide variety of products first makes it difficult for doctors to choose during surgery. The important thing is that there are not a few surgical failures caused by wrong product selection. For this reason, the inventor of this technology has done a number of successful technical solutions and obtained remarkable clinical effects such as bridging combined fracture internal fixation device (patent application number is CN200510010654.3), snap-in combined internal fixation device (patent The application number is CN201020646799.9).

Aiming at the disadvantages of traditional products, the present invention provides a brand-new solution by continuing to use the above-mentioned bridging combined fracture internal fixation device and snap-in combined internal fixation device.

Contents of the invention

The purpose of the utility model is to overcome the bottleneck of the current technical level and provide a combined bracket internal fixation device. The above combined stent internal fixation device provides smooth fixation rods, annular groove fixation rods, and spiral groove fixation rods, and also provides one end or both ends flat and is provided with a pressure hole or a locking hole or a pressure hole and a locking hole , set a smooth fixation rod, an annular groove fixation rod, and a spiral groove fixation rod that can be freely combined with the connecting hook at the other end of the locking hole at one end. The above technical solutions can deal with various fracture types and fracture sites through free combination, and successfully simplify fractures. The surgical operation improves the chance of fracture healing in patients.

Description of drawings

Fig. 1 to Fig. 8 are the structural schematic diagrams of the fixing rod of the fixing device in the combined bracket of the present invention;

Fig. 9 to Fig. 11 are structural schematic diagrams of the connecting hook of the internal fixation device of the combined bracket of the present invention;

Fig. 12 to Fig. 15 are the cross-sectional views of the assembled bracket internal fixing device of the utility model;

Figure 16 to Figure 18 are combined schematic diagrams of the internal fixation device of the combined bracket of the present invention;

In the figure of the internal fixing device of the combined bracket of the utility model:

1. Ring groove (groove arc surface) fixing rod 2. Spiral groove fixing rod (groove arc surface)

3. Locking hole 4. Pressure hole 5. Card slot 6. Screw hole

7. Rod hole 8. Connecting hook 9. Fixing rod

10. Top screw 11. Screw

working principle

1. The utility model is characterized in that: the use of a fixed rod or a plurality of fixed rods (9) and a plurality of connecting hooks (8) and the corresponding screw (10) and screws (11) assembled into the inner Fixed brace system to accommodate different types of fractures.

2. The utility model is characterized in that: the locking holes (3) and pressurizing holes (4) at both ends or one end of the fixing rod (9) can obtain fracture end compression, anti-rotation, Anti-separation and anti-compression features.

3. The utility model is characterized in that: when the slot (5) of the single rod connecting hook (8) is snapped into the fixed rod, the top wire (10) is screwed in, so that the top end of the top wire (10) is squeezed at a set angle Fix the arc surface of the groove (1, 2) of the rod to obtain the effect of preventing the rod from sliding and controlling the rotation of the rod. At the same time, after the locking screw is placed, it forms a bracket structure that is locked and connected with the rod hook nail.

4. The utility model is characterized in that: the rod hole at one end of the double-rod connecting hook penetrates into the fixing rod, the other end is inserted into the other fixing rod, and the top screw is tightened to lock the rod, and the fixing rod at the end of the rod hole passes through the locking screw The nail cap squeezes the fixed rod or the groove part of the fixed rod at the intersection of the screw hole and the rod hole to lock the rod. The double-rod connecting hook, the double-rod and the locking screw form a locked-connected support structure.

5. The utility model is characterized in that: when a single rod is used for fixing, locking screws or ordinary screws are placed in the pressure holes or locking holes at both ends of the fixing rod, and a plurality of single rod connecting hooks are inserted into the rod body, and the top wire is tightened. And after screwing in locking screws or ordinary screws, the internal fixation bracket of the single-rod system is completed.

6. The feature of the utility model patent is: when using multiple rods for fixing, the two ends or one end of the fixing rods are inserted into the pressure holes or locking holes with locking screws or ordinary screws, and then the double rods are connected (at least 2) to the rod holes of the hook Insert another fixing rod, snap the card slot into the fixing rod with the screw, tighten the top screw and insert the locking screw or ordinary screw to realize the internal fixing bracket of the multi-rod system.

The specific embodiments described above are only for the purpose of explaining the technical solution, and are not used to limit the utility model. Any equivalent embodiment that uses the technical content disclosed above to make some changes or modify equivalent changes still belongs to within the scope of the technical solutions of the present invention.

Claims (7)

1. A combined bracket internal fixation device, comprising a connecting hook, a fixing rod and a screw, is characterized in that: at least one fixing rod and a connecting hook are arranged on the main plane of the bracket device, perpendicular to the main plane at least A screw hole and a top screw hole are provided, the curved surface of the connecting hook groove or the circular rod hole curved surface of the connecting hook is matched with the curved surface of the fixing rod, and the screw cap and the front end of the jacking wire are matched with the groove or surface on the surface of the fixing rod . 2. The combined internal fixation bracket device according to claim 1, characterized in that: the connecting hook is a single-rod connecting hook and a double-rod connecting hook, and screw holes and top screw holes are arranged on the vertical plane, and the screw holes Internal threads are provided in the screw hole and the jacking screw hole, and are respectively matched with the locking thread of the locking screw and the jacking screw thread; the screw hole is perpendicular to the main plane; the jacking screw hole and the main plane have at least one angle change. 3. The combined stent internal fixation device as claimed in claim 2, characterized in that: the single rod connecting hook is perpendicular to the main plane and at least one screw hole is arranged, which is an opening slot, and the arc surface of the hook groove is in line with the arc surface of the fixing rod. Coordination; at least one screw hole is arranged perpendicular to the main plane of the double-rod connecting hook. Cross, when the screw is screwed into the screw hole, the screw cap squeezes the fixing rod; the fixing rod penetrates into the closed circular rod hole and cooperates with it. 4. The combined stent internal fixation device as claimed in claim 2, characterized in that: the jackscrew hole which is perpendicular to the main plane of the single rod connecting hook has a radial opening groove and has a certain angle, and the jackscrew is screwed in, and its front end is in line with the The surfaces of the fixed rods are in contact with each other; the top wire holes are radially open grooves perpendicular to the main plane of the double-rod connecting hook, and the top wires are screwed in, and the front ends thereof are in contact with the surface of the fixed rods. 5. The combined internal fixation device according to claim 2 or 4, characterized in that: the locking screw is composed of a nail cap, locking thread and inserting thread; The top wire hole is matched, and its end squeezes the surface of the fixed rod when screwed in. 6. The combined bracket internal fixation device as claimed in claim 2, characterized in that: said screw and the top screw cap end are a plum blossom groove and a plum blossom screwdriver head. 7. The combined bracket internal fixation device according to claim 1, characterized in that: at least one end of the fixing rod of the bracket device is flat and at least one locking hole or pressure hole is provided, and the locking hole has an internal thread to cooperate with the locking screw thread , the pressure hole is an oblong hole to match the ordinary screw cap; the surface of the fixing rod is evenly distributed with annular grooves or spiral grooves, which match with the working surface under the screw cap to prevent the screw from sliding on the main plane; the section of the ring groove fixing rod It is a closed circle, and the section of the spiral fixed rod is an open circle.