Multi-segment spine reduction external fixator

Abstract

The utility model provides a multi-segment spine reduction external fixator, which relates to the field of spine reshaping, and comprises fixing plates which are symmetrically arranged up and down, the two fixing plates are fixedly connected through inserting plates on two sides, two sides of the fixing plates are rotatably connected with telescopic sleeves, and the other ends of the telescopic sleeves are fixedly provided with limiting sleeves; the telescopic sleeve is divided into a fixed end and a free end, and a hinge shaft is fixedly installed on the contact face of the telescopic sleeve and the fixing plate. Through rotation and stretching of a limiting sleeve, after connection is completed, curing glue is injected into a cavity formed by a sealing ring, a telescopic sleeve and a positioning hole, meanwhile, curing glue is injected into a cavity formed by a sliding groove, a baffle and a positioning groove and a fixing sleeve, and therefore the device can be rigidly connected; through the arrangement, after the limiting sleeve can be adjusted at will, the device is rigidly connected, and therefore the problem that when the position of an existing device is fixed, the hole opening position needs to be precisely limited can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of spine plastic surgery, concretely is multi -segmental spinal column whole external fixator. BACKGROUND

[0002] At present, after the spinal column fracture or spinal column deformity reduction and fixation treatment, generally adopts the incision reduction internal fixation treatment of operation. The incision reduction internal fixation treatment of operation still needs the second internal fixation removal operation after fracture healing, due to the internal fixation in the body time is too long, easily causes internal fixation broken nail and fixed vertebral body's adjacent intervertebral disc degeneration complication, corresponding appears high medical expense, also brings the treatment of the tedious and complex of doctor, the long time of patient bed, is not favorable to the functional rehabilitation exercise of fracture postoperative, brings the pain of patient.

[0003] A multi-segmental spinal column whole external fixator disclosed in Chinese patent application publication CN200948163Y comprises four percutaneous threaded pins with sleeves and nuts, four connectors and two connecting rods, the percutaneous threaded pins are fixed on the connectors through screws, and the connectors are fixed on the connecting rods through screws. The two connecting rods are fixed and connected together through a connecting device. At least two groups of connectors for spinal deformity treatment are further provided on the connecting rods, each group of connectors for spinal deformity treatment comprises two connectors, which are respectively arranged on the connecting rods and fixed through screws. A percutaneous threaded pin with a sleeve and a nut is arranged in the strip-shaped through hole of each connector for spinal deformity treatment.

[0004] The multi-segmental spinal column whole external fixator provided by the technical scheme can not only adjust and externally fix the spinal column fracture, but also adjust and externally fix the spinal deformity. However, the positions of the sleeves and the connectors are relatively fixed, and a plurality of screws need to be arranged on the spinal column during the connection, the existing device cannot adjust the positions, and the device cannot be connected when the positions of the screws are deviated. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides a multi-segmental spinal column whole external fixator, which solves the problem that the positioning requirement of the existing device for the screws is high in the background art.

[0006] TECHNICAL SCHEME

[0007] The utility model discloses a multi-segment spine reduction external fixator which comprises upper and lower symmetrically arranged fixing plates, two fixing plates are fixedly connected through both sides of the inserted plate, both sides of the fixing plate are rotatably connected with telescopic sleeves, the other end of the telescopic sleeve is fixedly installed with a limiting sleeve, the telescopic sleeve is divided into a fixed end and a free end, a hinge shaft is fixedly installed on the contact surface of the telescopic sleeve and the fixing plate, the hinge shaft is rotatably connected with the fixing plate, the outer surface of the fixed end of the telescopic sleeve is provided with a convex, the outer surface of the fixed end of the telescopic sleeve is fixedly installed with a sealing ring, a positioning hole is formed in the inner ring of the sealing ring on the outer surface of the fixing plate, curing glue is injected into the cavity formed by the sealing ring, the fixed end of the telescopic sleeve and the positioning hole, a positioning groove is formed on the upper surface of the fixed end of the telescopic sleeve close to the free end, a sliding groove is formed on the upper surface of the free end of the telescopic sleeve, a baffle is arranged in the sliding groove, a fixing sleeve is fixedly installed on the upper surface of the baffle, the fixing sleeve is sleeved on the outer surface of the positioning groove, the fixing sleeve is fixedly connected with the fixed end of the telescopic sleeve, and curing glue is injected into the cavity formed by the fixing sleeve, the baffle and the sliding groove.

[0008] Further, the diameter of the bottom end of the positioning hole is greater than the diameter of the top end, and the cross-sectional shape of the sliding groove is a "middle" character shape.

[0009] Further, the both ends of the inserted plate are threadedly connected with screws, and the screws are threadedly connected with the fixing plate.

[0010] Further, the both fixing plates are fixedly connected through hinges, the number of the hinges is two, and the two hinges are symmetrically arranged.

[0011] Further, the fixing plate is a left-right symmetric two blocks, and the both fixing plates are connected through the adjusting mechanism with equidistant length on both sides.

[0012] Further, the limiting sleeve corresponding to the upper end fixing plate is located above the symmetric limiting sleeve of the lower end fixing plate, and the thicknesses of the upper and lower limiting sleeves are the same.

[0013] The utility model has the advantages that:

[0014] 1. The multi-segment spinal column reduction external fixator, through the setting of the limiting sleeve rotation and expansion, is aligned with the threaded hole opened in the spine and connected with the screw through the limiting sleeve and the threaded hole, after the connection, the cavity composed of the sealing ring, the expansion sleeve and the positioning hole is injected with curing glue, and the cavity composed of the sliding groove, the baffle, the positioning groove and the fixing sleeve is injected with curing glue, the expansion sleeve after curing cannot rotate relative to the fixed plate, and the free end after curing cannot slide relative to the fixed end, so that the device can be rigidly connected, through such setting, the limiting sleeve can be adjusted arbitrarily, and then the device is rigidly connected, so that the problem that the position of the existing device is fixed and the opening position needs to be accurately defined can be avoided.

[0015] 2. The multi-segment spinal column reduction external fixator, through the setting that the diameter of the bottom end of the positioning hole is greater than the diameter of the top end, and the cross-sectional shape of the sliding groove is "middle" shape, through such setting, the two adjacent devices can be tightly attached together after the glue is cured. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the utility model;

[0017] Figure 2 It is a fixed plate and expansion sleeve connection schematic view of the utility model;

[0018] Figure 3 It is an expansion sleeve fixed end half-section schematic view of the utility model;

[0019] Figure 4 It is an expansion sleeve free end half-section schematic view of the utility model;

[0020] Figure 5 It is a fixed plate half-section schematic view of the utility model.

[0021] Among them, 1, fixed plate; 2, plug-in plate; 3, expansion sleeve; 4, limiting sleeve; 31, fixed end; 32, free end; 5, hinged shaft; 6, protrusion; 7, sealing ring; 8, positioning hole; 9, positioning groove; 10, sliding groove; 11, baffle; 12, fixing sleeve; 13, screw; 14, hinge; 15, adjusting mechanism. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0023] ReferenceFigures 1-5 The multi-segment spinal rectification external fixator comprises upper and lower symmetrically arranged fixing plates 1, the two fixing plates 1 are fixedly connected through the two side plug-in plates 2, the two sides of the fixing plate 1 are rotatably connected with telescopic sleeves 3, the other end of the telescopic sleeve 3 is fixedly installed with a limiting sleeve 4, the telescopic sleeve 3 is divided into a fixed end 31 and a free end 32, the telescopic sleeve 3 is fixedly installed with a hinge shaft 5 on the contact surface with the fixing plate 1, the hinge shaft 5 is rotatably connected with the fixing plate 1, the outer surface of the fixed end 31 of the telescopic sleeve 3 is provided with a protrusion 6, the outer surface of the fixed end 31 of the telescopic sleeve 3 is fixedly installed with a sealing ring 7, the outer surface of the fixing plate 1 is provided with a positioning hole 8 in the inner ring of the sealing ring 7, the cavity formed by the sealing ring 7, the fixed end 31 of the telescopic sleeve 3 and the positioning hole 8 is injected with solidified glue, the upper surface of the fixed end 31 of the telescopic sleeve 3 is provided with a positioning groove 9 close to the free end 32, the upper surface of the free end 32 of the telescopic sleeve 3 is provided with a sliding groove 10, the inside of the sliding groove 10 is provided with a baffle 11, the upper surface of the baffle 11 is fixedly installed with a fixing sleeve 12, the fixing sleeve 12 is sleeved on the outer surface of the positioning groove 9, the fixing sleeve 12 is fixedly connected with the fixed end 31 of the telescopic sleeve 3, and the cavity formed by the fixing sleeve 12, the baffle 11 and the sliding groove 10 is injected with solidified glue.

[0024] The bottom end diameter of the positioning hole 8 is greater than the top end diameter, and the cross-sectional shape of the sliding groove 10 is a "middle" shape, so that the adjacent two devices can be tightly attached together after the glue is solidified.

[0025] The two ends of the plug-in plate 2 are threadedly connected with screws 13, and the screws 13 are threadedly connected between the plug-in plate 2 and the fixing plate 1, so that stable connection between the plug-in plate 2 and the fixing plate 1 can be formed, and the plug-in plate 2 can be removed.

[0026] The two fixing plates 1 are fixedly connected through a hinge 14, the number of the hinge 14 is two, and the two hinges 14 are symmetrically arranged, so that when the plug-in plate 2 is removed, the two fixing plates 1 can be relatively bent, but the horizontal displacement of the two fixing plates 1 can be limited due to the arrangement of the hinge 14, so as to avoid misplacement of the connected two segments of the spine.

[0027] The fixing plate 1 is left-right symmetrically arranged, the two fixing plates 1 are connected through the two side equidistant length adjusting mechanisms 15, the adjusting mechanism 15 can be a double-headed reverse threaded column, the two sides are provided with limiting rods, and the double-headed reverse threaded column can be rotated to simultaneously move the two fixing plates 1 on the horizontal two sides to the same distance in the same direction or in the opposite direction. Through such arrangement, the distance between the two fixing plates 1 can be adjusted in a large range.

[0028] The limiting sleeve 4 corresponding to the upper end fixing plate 1 is located above the symmetric limiting sleeve 4 of the lower end fixing plate 1, and the thicknesses of the upper and lower limiting sleeves 4 are the same, so that a plurality of spine bones can be continuously fixed.

[0029] In use, by rotating and stretching, the limiting sleeve 4 is aligned with the threaded hole of the spine, and the threaded nail is connected through the limiting sleeve 4 and the threaded hole. After the connection is completed, the cavity formed by the sealing ring 7, the telescopic sleeve 3 and the positioning hole 8 is injected with curing glue, and the cavity formed by the sliding groove 10, the baffle 11, the positioning groove 9 and the fixed sleeve 12 is injected with curing glue. The cured telescopic sleeve 3 cannot rotate relative to the fixed plate 1, and the free end 32 after curing cannot slide relative to the fixed end 31, so that the device can be rigidly connected. Through such a setting, the limiting sleeve 4 can be adjusted arbitrarily, and then the device is rigidly connected, thereby avoiding the problem that the existing device position fixed needs to be accurately defined.

[0030] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions.

[0031] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A multi-segment spinal reduction external fixator, comprising fixation plates (1) arranged symmetrically above and below, characterized in that: The two fixing plates (1) are fixedly connected through the plug-in plates (2) on both sides. The two sides of the fixing plate (1) are rotatably connected with telescopic sleeves (3), and the other ends of the telescopic sleeves (3) are fixedly installed with limiting sleeves (4); The telescopic sleeve (3) is divided into a fixed end (31) and a free end (32); On the contact surface between the telescopic sleeve (3) and the fixing plate (1), a hinge shaft (5) is fixedly installed. The hinge shaft (5) is rotatably connected with the fixing plate (1). A protrusion (6) is arranged on the outer surface of the fixed end (31) of the telescopic sleeve (3). A sealing ring (7) is fixedly installed on the outer surface of the fixed end (31) of the telescopic sleeve (3). A positioning hole (8) is opened on the outer surface of the fixing plate (1) within the inner ring of the sealing ring (7). Curable glue is injected into the cavity formed by the sealing ring (7), the fixed end (31) of the telescopic sleeve (3), and the positioning hole (8); On the upper surface of the fixed end (31) of the telescopic sleeve (3) near the free end (32), a positioning groove (9) is opened. On the upper surface of the free end (32) of the telescopic sleeve (3), a sliding groove (10) is opened. A baffle (11) is arranged inside the sliding groove (10). A fixed sleeve (12) is fixedly installed on the upper surface of the baffle (11). The fixed sleeve (12) is sleeved on the outer surface of the positioning groove (9). The fixed sleeve (12) is fixedly connected with the fixed end (31) of the telescopic sleeve (3). Curable glue is injected into the cavity formed by the fixed sleeve (12), the baffle (11), and the sliding groove (10).

2. The multi-segment spinal reduction external fixator according to claim 1, characterized in that: The bottom diameter of the positioning hole (8) is larger than the top diameter, and the cross-sectional shape of the sliding groove (10) is "middle" shaped.

3. The multi-segment spinal reduction external fixator according to claim 2, characterized in that: Both ends of the plug-in plate (2) are threadedly connected with screws (13), and the screws (13) are threadedly connected with the fixing plate (1).

4. The multi-segment spinal reduction external fixator according to claim 3, characterized in that: The two fixing plates (1) are fixedly connected through hinges (14). The number of hinges (14) is two, and the two hinges (14) are symmetrically arranged.

5. The multi-segment spinal reduction external fixator according to any one of claims 1-4, characterized in that: The fixing plate (1) consists of two symmetrically arranged parts on the left and right. The two fixing plates (1) are connected through an adjusting mechanism (15) with an adjustable length at equal intervals on both sides.

6. The multi-segment spinal reduction external fixator according to claim 5, characterized in that: The limiting sleeve (4) corresponding to the upper fixing plate (1) is located above the limiting sleeve (4) symmetrically arranged on the lower fixing plate (1), and the upper and lower limiting sleeves (4) have the same thickness.

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