CN216876543U

CN216876543U - A locator for annular external fixation frame

Info

Publication number: CN216876543U
Application number: CN202120491076.4U
Authority: CN
Inventors: 程刚; 王伟世; 王全; 师富贵; 王志刚; 王宝福; 芦亮红; 孙军年; 尚建红; 龙兴旺
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-08
Filing date: 2021-03-08
Publication date: 2022-07-05
Anticipated expiration: 2031-03-08

Abstract

The utility model discloses a positioner for an annular external fixing frame, which comprises a fixing hook, a sliding hook, a spring plate, a screw, a spring and a positioning nut, wherein the fixing hook is fixedly connected with the sliding hook; the fixed hook is arranged at the left end of the screw rod, the spring plate is arranged on the fixed hook and located on the inner side of the screw rod, the positioning nut is arranged at the right end of the screw rod, the sliding hook and the spring sleeve are arranged on the screw rod, one end of the spring is connected to the positioning nut, and the other end of the spring is connected to the sliding hook. The annular external fixing frame is provided with the locators, the limbs are clamped by the spring plates on the locators, and the annular external fixing frame and the limbs are relatively accurate through the synergistic effect of the two sets of locators; the positioner has a fixing function, realizes the self-stabilization of the fixing frame outside the environment, frees the hands of an operator, and is more beneficial to operation; the non-invasive operation device has the characteristics of simple structure, convenience in disassembly and assembly and non-invasive use, and can effectively improve the operation efficiency.

Description

A locator for annular external fixation frame

Technical Field

The utility model relates to the technical field of medical auxiliary devices, in particular to a positioner for an annular external fixing frame.

Background

The Ilizarov annular external fixator system not only has the most basic function of fixing the fracture, but also can apply axial compression or tension stress to the limb, so the Ilizarov annular external fixator system has unique therapeutic value in the surgical treatment of orthopedic difficult injuries such as limb bone defect, bone infection, fracture nonunion, deformed limb orthopedics and the like, and is increasingly and widely popularized and used in recent years.

The Ilizarov annular external fixator system is used in a basic form of a unit, in the operation process, two annular racks and four fixing screws are pre-assembled into a cage-shaped combined body which is called as the unit, and the unit is connected and firmly fixed on a limb through a plurality of Kirschner wires and Schanz nails; then, the distance between two adjacent rings is adjusted by a screw and a nut between the units or inside the units, so that the aim of applying axial stress to the limbs is fulfilled.

When the Ilizarov annular external fixator achieves the purpose of applying axial stress to a limb, strict requirements are imposed on the relative position relationship of the unit and the limb in a three-dimensional space, the central axis of the unit and the central axis of the limb are required to be coaxial, and the two axes are required to be parallel and close to each other as far as possible even if the coaxial cannot be achieved; because the axis of the unit is a virtual line in a space, and the axis of the limb is also a virtual axis deep inside the limb, the relative position relationship between the unit and the limb cannot be adjusted by directly using the two axes as references in reality. In the actual operation using the Ilizarov annular external fixing frame, due to the limitation of instruments, the adjustment and maintenance of the position relationship of the Ilizarov annular external fixing frame and the Ilizarov annular external fixing frame mainly depend on the visual estimation and the bare-handed holding of an operator at present, the result is neither accurate nor stable, even experienced operators are often difficult to perform subsequent operation operations such as the insertion of a Kirschner wire and the like while maintaining the positions of the Ilizarov annular external fixing frame and the Ilizarov annular external fixing frame, and the successful implementation of subsequent treatment measures such as later stage pressurization or stretching is affected after the Kirschner wire is used for firmly fixing the unit and the limb, or two shafts form a certain included angle, or the two shafts are approximately parallel but are far away. The present invention provides a retainer for an annular external mount that solves the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a positioner for an annular external fixing frame, which realizes the accuracy of the relative position of the annular external fixing frame and limbs by placing the positioner.

The technical scheme adopted by the utility model for solving the technical problems is as follows:

a locator for an annular external fixing frame comprises a fixing hook, a sliding hook, a spring plate, a screw, a spring and a locating nut; the fixed hook is arranged at the left end of the screw rod, the spring plate is arranged on the fixed hook and located on the inner side of the screw rod, the positioning nut is arranged at the right end of the screw rod, the sliding hook and the spring sleeve are arranged on the screw rod, one end of the spring is connected to the positioning nut, and the other end of the spring is connected to the sliding hook.

Further, the fixed hook comprises a connecting block and a hook, the connecting block is connected to the screw rod through threads, and the hook is arranged on the connecting block and located on the front side of the connecting block.

Further, the slide hook comprises a slide cylinder, a trigger and a hook, the slide cylinder is sleeved on the screw rod, the trigger is arranged at the top of the slide cylinder, and the hook is arranged at the bottom of the slide cylinder.

Furthermore, the hook of the sliding hook is opposite to the fixed hook of the fixed hook, is positioned on the same horizontal plane, and is staggered on the vertical plane.

Further, the hook comprises a connecting section and a hook body, the connecting section is horizontally connected to the connecting block and the sliding cylinder, and the hook body is arranged at the outer end of the connecting section.

Further, the upper end fixed connection of spring board is on the couple of fixed hook, the bottom of spring board is in free state, and is the arc.

Furthermore, the bottom end of the spring plate is provided with two wing plates which are located on two sides of the bottom end of the spring plate and protrude upwards.

Preferably, the length and width of the spring plate are 120 x 10mm, and the distance between the two wing plates is 10 mm.

Furthermore, a threaded hole is formed in the connecting block, the screw rod is located in the threaded hole, and the external thread of the screw rod is matched with the internal thread of the threaded hole.

The utility model has the following beneficial effects:

the annular external fixing frame is provided with the locators, the limbs are clamped by the spring plates on the locators, and the annular external fixing frame and the limbs are relatively accurate through the synergistic effect of the two sets of locators;

the positioner has a fixing function, realizes the self-stabilization of the fixing frame outside the environment, frees the hands of an operator, and is more beneficial to operation;

the spring plate of the positioner is elastically fixed, so that flexible adjustment can be realized, and the positions of the annular fixing frame and the limbs can be adjusted in any state, so that the surgical operation can be better met;

the utility model has the characteristics of simple structure, convenient disassembly and assembly and noninvasive use, and can effectively improve the operation efficiency.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a front view of the present invention mounting hook;

FIG. 3 is a front view of the slide hook of the present invention;

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

FIG. 5 is a schematic view of a single component arrangement of the present invention;

FIG. 6 is a schematic view of the assembled state of the present invention;

FIG. 7 is a schematic view of the present invention in a fixed use state;

fig. 8 is a schematic view of the surgical situation of the present invention.

Reference numerals: 1-fixed hook, 11-connecting block, 12-hook, 2-sliding hook, 21-sliding cylinder, 22-trigger, 3-spring plate, 31-wing plate, 4-screw, 5-spring and 6-positioning nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the specification, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

As shown in fig. 1 and 5, a locator for an annular external fixing frame comprises a fixing hook 1, a sliding hook 2, a spring plate 3, a screw rod 4, a spring 5 and a locating nut 6; the fixed hook 1 is arranged at the left end of the screw rod 4, the spring plate 3 is arranged on the fixed hook 1 and located on the inner side of the screw rod 4, the positioning nut 6 is arranged at the right end of the screw rod 4, the sliding hook 2 and the spring 5 are sleeved on the screw rod 4, one end of the spring 5 is connected to the positioning nut 6, and the other end of the spring is connected to the sliding hook 2.

The utility model is clamped and fixed on the annular external fixing frame under the action of the thrust of the spring 5 through the fixing hook 1 and the sliding hook 2 which are oppositely arranged, and elastic constraint is formed by utilizing the elastic spring plate 3, so that the center of the annular external fixing frame is concentric with the center of the limb, and a stable state is kept, thereby facilitating the operation.

As shown in fig. 2, further, the fixing hook 1 includes a connecting block 11 and a hook 12, the connecting block 11 is connected to the screw rod 4 through a thread, and the hook 12 is provided on the connecting block 11 at the front side of the connecting block 11.

Preferably, the hook 12 is formed by bending a metal plate with the length of 20mm, the width of 10mm and the plate thickness of 2mm, the arc-shaped outer diameter of the bent hook 12 is 12mm, the inner diameter of the bent hook is 8mm, and the length of the reverse bending part of the hook end is 8 mm; the connecting block 11 is a directional metal block with the size of 10 × 6 mm. The hook 12 is connected with the connecting block 11 in a welding mode.

As shown in fig. 1 and 3, further, the slide hook 2 includes a slide cylinder 21, a trigger 22 and a hook 12, the slide cylinder 21 is sleeved on the screw rod 4, the trigger 22 is arranged at the top of the slide cylinder 21, and the hook 12 is arranged at the bottom of the slide cylinder 21.

Preferably, the slide cylinder 21 has an outer diameter of 8mm, an inner diameter of 6.1mm and a length of 30mm, the trigger 22 has a bottom side of 5mm, a height of 20mm and a thickness of 2mm, the body is slightly arc-shaped, the body gradually narrows to about 3mm upwards along the bottom side, and the top is arc-shaped.

Furthermore, the hook 12 of the slide hook 2 is arranged opposite to the fixed hook 1 of the fixed hook 1, is positioned on the same horizontal plane, and is staggered on the vertical plane.

Further, the hook 12 comprises a connecting section and a hook body, the connecting section is horizontally connected to the connecting block 11 and the sliding cylinder 21, and the hook body is arranged at the outer end of the connecting section.

Further, the upper end of the spring plate 3 is fixedly connected to the hook 12 of the fixing hook 1, and the bottom end of the spring plate 3 is in a free state and is arc-shaped.

As shown in fig. 1 and 4, the bottom end of the spring plate 3 is further provided with two wings 31, and the two wings 31 are located on two sides of the bottom end of the spring plate 3 and protrude upward.

Preferably, the length and width of the spring plate 3 are 120 × 10mm, and the distance between the two wings 31 is 10mm and protrudes 2mm above the upper surface of the spring plate 3.

Furthermore, a threaded hole is formed in the connecting block 11, the screw rod 4 is located in the threaded hole, and the external thread of the screw rod 4 is matched with the internal thread of the threaded hole.

Preferably, in actual use, the elasticity of the spring plate 3 is ensured to be moderate by adjusting the position of the positioning nut 6 and adjusting the elasticity of the spring 5.

Preferably, the screw rod 4 is an external thread cylinder with the diameter of 6mm and the length set according to the actual situation; spring 5 is cylindrical spring, length 45mm, external diameter 9mm, internal diameter 7mm, set nut 6 is outer hexagon nut, external diameter 10mm, internal diameter 6mm, thick 6 mm.

As shown in fig. 6, 7 and 8, in the embodiment of the present invention, two sets of positioning devices are respectively disposed on the annular external fixing frame to form a fixing structure of the annular external fixing frame; the annular external fixing frame comprises annular frames and fixing screws, the two annular frames are connected into a whole through the four fixing screws, two groups of positioners are respectively arranged at the outer sides of the annular external fixing frame, and each group of positioners consists of four positioners which are in mutual contact end to end; the four fixing screws are sequentially a fixing screw I, a fixing screw II, a fixing screw III and a fixing screw IV, and the four positioners are sequentially a positioner I, a positioner II, a positioner III and a positioner IV; the fixing hook 1 of the first positioner is hooked on the first fixing screw rod, the sliding hook 2 of the first positioner is hooked on the second fixing screw rod, the fixing hook 1 of the second positioner is hooked on the second fixing screw rod and is in contact with the sliding hook 2 of the first positioner, the sliding hook 2 of the second positioner is hooked on the third fixing screw rod, four positioners are connected end to end according to the connection mode to form a closed connecting ring, the spring plates 3 of the four positioners are sequentially connected, and the adjacent spring plates 3 are clamped and fixed through the wing plates 31 to form an elastic ring which is clamped and fixed on the periphery of the limb.

As shown in fig. 5, 6, 7 and 8, the method of use of the present invention is as follows:

firstly, sleeving the annular external fixing frame unit on the limb of a patient;

secondly, a group of four positioners is sequentially installed, and after the two groups of positioners are installed, an operator adjusts the positions of the two groups of positioners and the position and tightness of the spring plate 3 in each group of positioners to adjust the position of the annular external fixing frame;

thirdly, after the position is adjusted, the whole limb including the skeleton is tightly attached to the ring surface, the Kirschner wire penetrates through the whole limb, the Kirschner wire is connected with the fixing screw, and finally the annular external fixing frame unit is firmly connected with the limb by the Kirschner wire.

In the second step, the installation method of the positioner is as follows: firstly, a fixed hook 1 is hooked on a positioning screw rod, then an operator pulls a trigger 22 to compress a spring 5 to drive a sliding hook 2 to move backwards, the sliding hook 2 is hooked on an adjacent positioning screw rod to complete the installation of one positioner, and then the installation of a group of four positioners is completed in sequence.

After the four positioners are installed, the spring plates 3 of the four positioners are sequentially contacted with each other and deformed to form an elastic ring, the limbs of a patient are positioned in the elastic ring, the centers of the sections of the two annular frames are basically concentric with the center of the ring, so that the subsequent needle threading operation is facilitated, and the stability and accuracy of the operation are ensured.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not to be construed as limiting the claims.

Claims

1. A positioner for an annular external fixing frame is characterized by comprising a fixing hook (1), a sliding hook (2), a spring plate (3), a screw rod (4), a spring (5) and a positioning nut (6); establish the left end at screw rod (4) fixed hook (1), establish on fixed hook (1) spring board (3), be located the inboard of screw rod (4), set nut (6) establish the right-hand member at screw rod (4), slip hook (2) and spring (5) cover are established on screw rod (4), the one end of spring (5) is connected on set nut (6), and the other end is connected on slip hook (2).

2. The retainer for the annular external fixator of claim 1, wherein: fixed hook (1) includes connecting block (11) and couple (12), connecting block (11) are through threaded connection on screw rod (4), establish on connecting block (11) couple (12), are located the front side of connecting block (11).

3. A retainer for an annular external fixator according to claim 2 wherein: slip hook (2) are including slide cartridge (21), trigger (22) and couple (12), slide cartridge (21) cover is established on screw rod (4), trigger (22) are established at slide cartridge (21) top, couple (12) are established in slide cartridge (21) bottom.

4. A retainer for an annular external fixator according to claim 3 wherein: the hook (12) of the sliding hook (2) is opposite to the fixed hook (1) of the fixed hook (1), is positioned on the same horizontal plane, and is staggered on the vertical plane.

5. A retainer for an annular external fixator according to claim 3 wherein: the hook (12) comprises a connecting section and a hook body, the connecting section is horizontally connected to the connecting block (11) and the sliding cylinder (21), and the hook body is arranged at the outer end of the connecting section.

6. A retainer for an annular external fixator according to claim 2 wherein: the upper end fixed connection of spring board (3) is on couple (12) of fixed hook (1), the bottom of spring board (3) is in free state, and is the arc.

7. The retainer for the annular external fixator of claim 6 wherein: the bottom of spring plate (3) is equipped with pterygoid lamina (31), pterygoid lamina (31) set up two, are located the both sides of the bottom of spring plate (3) to upwards the protrusion.

8. The retainer for the annular external fixator of claim 7 wherein: the length and width of the spring plate (3) are 120 x 10mm, and the distance between the two wing plates (31) is 10 mm.

9. A retainer for an annular external fixator according to claim 2 wherein: the connecting block (11) is provided with a threaded hole, the screw rod (4) is positioned in the threaded hole, and the external thread of the screw rod (4) is matched with the internal thread of the threaded hole.