Leg bone positioning and measuring fixing ring

Abstract

The utility model discloses a leg bone positioning and measuring fixing ring which comprises a first fixing ring, a second fixing ring is arranged on one side of the first fixing ring, and a measuring mechanism is arranged on the outer surface of the first fixing ring and the outer surface of the second fixing ring. The parallel and displacement states between the first fixing ring and the second fixing ring are detected by measuring the relative distance between the first fixing ring and the second fixing ring. According to the fixing ring for positioning and measuring the leg bone, the relative position difference between the first fixing ring and the second fixing ring between different point positions is measured by reading the position deviation of the two opposite measuring plates on the first fixing ring and the second fixing ring relative to the sliding seat after the connecting rope is tightened; therefore, the parallelism and displacement between the first fixing ring and the second fixing ring are detected, and the detection precision can be improved by increasing point positions during use through the detachable installation design of the measuring plate, the first fixing ring and the second fixing ring.

Description

Technical Field

[0001] The utility model relates to the technical field of orthopedics, in particular to a leg bone positioning, measuring and fixing ring. Background Art

[0002] External fixator fixation refers to a method of drilling bone pins or screws into the two ends of the fracture and then fixing them on the external fixator outside the skin, using physical adjustment to make the two ends of the fracture achieve good alignment and fixation. It is also called external fixator fixation. Its main types include unilateral frame, half ring, full ring and triangular external fixator, balanced fixation traction frame, etc. Among them, the unilateral frame refers to a set of steel pins inserted at the upper and lower ends of one side of the fracture, passing through the bone cortex on both sides, but not through the soft tissue on the opposite side. For an ideal unilateral bone external fixator, the frame should be light and strong, easy to load and unload, and firmly fixed. There should be pressure and traction design at both ends. The diameter and length of the fixing pins should be suitable and adjustable. After drilling into the bone, they have strong bite force, are integrated with the frame, have strong fixing force, and have good resistance to rotation and flexion and extension shear force. Half ring, full ring and triangular external fixators are all multi-plane external fixators, which are multi-plane pin insertions and are a relatively stable type. They will not cause rotation and angular deformity, but the structure It is complex, cumbersome to install, and large in size. Because of the large number of connecting rods and pins, the fixation is too firm, which produces excessive stress shielding effect and may affect fracture healing. The balanced fixed traction frame is a single-pin bilateral external fixator, which passes a single Steinmann pin through the femoral condyle, puts a fixing ring on the thigh root, and connects the telescopic rod inside and outside to treat femoral shaft fractures. It is characterized by poor stability and often requires small splint fixation. Therefore, when choosing a fixation method, it is necessary to choose it in combination with the actual situation of the patient. Among them, in order to ensure good results during installation of the full-ring external fixator, it is required that the rings must be parallel to each other to avoid bone dislocation caused by misalignment between the rings and reduce the pain of the patient caused by subsequent repeated disassembly and assembly of the fixator. However, in the process of measuring whether it is parallel, the relative position between the rings is easily changed further when using hard tools for measurement, which leads to inaccurate measurement results. Utility Model Content

[0003] The utility model aims to provide a leg bone positioning measurement fixing ring to solve the problem of poor measurement methods proposed in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a leg bone positioning and measuring fixing ring, comprising a first fixing ring, a second fixing ring is arranged on one side of the first fixing ring, and mounting holes are evenly provided on the outer surfaces of the first fixing ring and the second fixing ring, and a measuring mechanism is arranged on the outer surfaces of the first fixing ring and the second fixing ring, and the parallel state between the first fixing ring and the second fixing ring is detected by measuring the relative distance between the first fixing ring and the second fixing ring.

[0005] Preferably, the measuring mechanism comprises: a measuring plate, a plug-in frame is arranged in one end of the measuring plate, and the outer surface of the plug-in frame is penetrated by fixing bolts, a clearance groove is opened on the outer surface of the measuring plate, and scale grooves are opened on the upper surface of the measuring plate on both sides of the clearance groove, a sliding sliding seat is installed on the outer surface of the measuring plate, and a sliding groove is opened on the side surface of the measuring plate, and a sliding frame is fixedly arranged on the side surface of the sliding seat.

[0006] By adopting the above technical solution, the sliding seat can slide on the surface of the measuring plate through the clearance groove through the engagement of the sliding frame and the sliding groove to achieve the purpose of pulling the connecting rope.

[0007] Preferably, the measuring mechanism also includes: a mounting column, which is fixedly arranged on the upper surface of the sliding seat, and the inner surface of the mounting column is connected to the lower end of the extrusion ring, and a sliding clamping block is installed on the upper end of the sliding seat, and a connecting rope is clamped between the two clamping blocks.

[0008] By adopting the above technical solution, when the connecting rope is pulled, the clamping block can drive another sliding seat below to slide.

[0009] Preferably, the plug-in frame is fixedly mounted to the first fixing ring and the second fixing ring by fixing bolts, and the plug-in frame is designed as a C-shaped opening, and the fixing bolts pass through the mounting holes.

[0010] By adopting the above technical solution, the measuring board can be installed at the corresponding positions on the outer surfaces of the first fixing ring and the second fixing ring through the plug-in frame.

[0011] Preferably, the lower surface of the sliding seat fits with the upper surface of the measuring plate, one end of the sliding frame is located inside the sliding groove, and the outer surface of one end of the sliding frame fits with the outer surface of the measuring plate with the scale groove.

[0012] By adopting the above technical solution, the sliding frame can detect the relative position between two sliding seats facing each other vertically by blocking the scale groove.

[0013] Preferably, the mounting column and the extrusion ring are threadedly connected, and the mounting column, the extrusion ring, the clamping block and the sliding seat are all concentrically arranged.

[0014] By adopting the above technical solution, the clamping block can slide when under pressure and clamp and center the connecting rope.

[0015] Preferably, the clamping block is designed as a truncated cone with a larger upper portion and a smaller lower portion, a spring is connected between the clamping block and the sliding seat, a gap is left between the two clamping blocks, and the lower end side surface of the clamping block fits with the upper end inner surface of the extrusion ring.

[0016] By adopting the above technical solution, the extrusion ring can gradually squeeze the clamping blocks by rotating and sliding so that the two clamping blocks are close to each other to clamp the connecting rope.

[0017] Compared with the prior art, the utility model has the following beneficial effects: the leg bone positioning and measuring fixing ring:

[0018] 1. By reading the position deviation of the two measuring plates on the first fixing ring and the second fixing ring relative to the sliding seat after the connecting rope is tightened, the relative position difference between the first fixing ring and the second fixing ring at different points can be measured, thereby realizing the detection of the parallelism and displacement between the first fixing ring and the second fixing ring;

[0019] 2. Furthermore, by means of the detachable installation design of the measuring plate and the first fixing ring and the second fixing ring, the detection accuracy can be improved by increasing the number of points during use, so that the parallelism and displacement of the first fixing ring and the second fixing ring can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of the plug-in frame and the fixing bolts connected to the utility model;

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of the overall cutaway surface of the utility model;

[0023] Figure 4 This is a schematic diagram of the three-dimensional structure of the connection between the sliding seat and the sliding frame of the utility model;

[0024] Figure 5 This is a schematic diagram of the three-dimensional structure of the connection between the measuring plate and the scale groove of the utility model;

[0025] Figure 6 For this utility model Figure 3 The enlarged structural diagram at A in the middle;

[0026] Figure 7 For this utility model Figure 5 Enlarged structural diagram at B in the middle.

[0027] In the figure: 1. first fixing ring; 2. second fixing ring; 3. mounting hole; 4. measuring plate; 5. plug-in frame; 6. fixing bolt; 7. clearance groove; 8. scale groove; 9. sliding seat; 10. sliding groove; 11. sliding frame; 12. mounting column; 13. extrusion ring; 14. clamping block; 15. connecting rope. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-7 The utility model provides a technical solution: a leg bone positioning and measuring fixing ring, comprising: a first fixing ring 1, a second fixing ring 2 is arranged on one side of the first fixing ring 1, and mounting holes 3 are evenly opened on the outer surfaces of the first fixing ring 1 and the second fixing ring 2, and a measuring mechanism is arranged on the outer surfaces of the first fixing ring 1 and the second fixing ring 2, and the parallel state between the first fixing ring 1 and the second fixing ring 2 is detected by measuring the relative distance between the first fixing ring 1 and the second fixing ring 2.

[0030] The measuring mechanism comprises: a measuring plate 4, a plug-in frame 5 is arranged in one end of the measuring plate 4, and the outer surface of the plug-in frame 5 is penetrated by a fixing bolt 6, a clearance groove 7 is opened on the outer surface of the measuring plate 4, and scale grooves 8 are opened on the upper surface of the measuring plate 4 on both sides of the clearance groove 7, a sliding seat 9 is installed on the outer surface of the measuring plate 4, and a sliding groove 10 is opened on the side surface of the measuring plate 4, and a sliding frame 11 is fixedly arranged on the side surface of the sliding seat 9;

[0031] The plug-in frame 5 is fixedly installed with the first fixing ring 1 and the second fixing ring 2 by means of fixing bolts 6, and the plug-in frame 5 is designed with a C-shaped opening, and the fixing bolts 6 pass through the mounting holes 3. The lower surface of the sliding seat 9 fits with the upper surface of the measuring plate 4, and one end of the sliding frame 11 is located inside the sliding groove 10, and the outer surface of one end of the sliding frame 11 fits with the outer surface of the measuring plate 4 with the scale groove 8. The measuring plate 4 measures the parallelism of the first fixing ring 1 and the second fixing ring 2 by means of the plug-in frame 5 being plugged into the surfaces of the first fixing ring 1 and the second fixing ring 2.

[0032] The measuring mechanism further includes: a mounting column 12, which is fixedly arranged on the upper surface of the sliding seat 9, and the lower end of the extrusion ring 13 is connected to the inner surface of the mounting column 12, and a sliding clamping block 14 is installed on the upper end of the sliding seat 9, and a connecting rope 15 is clamped between the two clamping blocks 14;

[0033] The mounting column 12 is threadedly connected to the extrusion ring 13, and the mounting column 12, the extrusion ring 13, the clamping block 14 and the sliding seat 9 are all concentrically arranged. The clamping block 14 is a truncated cone design with a larger upper portion and a smaller lower portion. A spring is connected between the clamping block 14 and the sliding seat 9, and a gap is left between the two clamping blocks 14. The lower end side surface of the clamping block 14 is in contact with the upper inner surface of the extrusion ring 13. The relative position between the first fixing ring 1 and the second fixing ring 2 is measured by tensioning the connecting rope 15.

[0034] Working principle: When using the measuring fixing ring for leg bone positioning, firstly, the first fixing ring 1 and the second fixing ring 2 are respectively installed on the leg bones to be fixed by a steel needle but are not finally fixed. At this time, the measuring plate 4 is plugged into the surfaces of the first fixing ring 1 and the second fixing ring 2 through the plug-in frame 5, and the plug-in frame 5 is fixed to the surfaces of the first fixing ring 1 and the second fixing ring 2 by means of fixing bolts 6 passing through the mounting holes 3. At this time, the sliding seat 9 on the first fixing ring 1 is slid until the sliding seat 9 connected to the lower end of the connecting rope 15 is driven and pulled to slide in the make way groove 7, and at the same time, the sliding frame 11 is driven to slide in the sliding groove 10. At this time, observe that the scale value of the scale groove 8 on the side surface of the sliding seat 9 on the first fixing ring 1 is opposite to the scale value of the sliding frame 11 on the side surface of the sliding seat 9 on the second fixing ring 2. The difference in scale values ​​and the actual tilt direction of the connecting rope 15 are repeated until all the connecting ropes 15 between the mutually opposite measuring plates 4 are pulled against the wall and the reading calculation is completed. At this time, when the relative tilt directions of the connecting ropes 15 between all the two opposite sliding seats 9 and the difference in scale values ​​are the same, it means that the first fixing ring 1 and the second fixing ring 2 are completely parallel but not concentric. When the connecting ropes 15 between all the two opposite sliding seats 9 are straightened and the difference in scale values ​​is zero, it means that the first fixing ring 1 and the second fixing ring 2 are completely parallel and concentric. When the relative tilt directions of the connecting ropes 15 between all the two opposite sliding seats 9 are not completely the same and the difference in scale values ​​are not completely the same, it means that the first fixing ring 1 and the second fixing ring 2 are not parallel.

[0035] When the length of the connecting rope 15 needs to be replaced, the extrusion ring 13 is rotated. The extrusion ring 13 moves downward through the threaded connection with the mounting column 12 to release the extrusion on the outer inclined surface of the clamping block 14. At this time, the clamping block 14 slides under the support of the spring between the sliding seat 9 to release the limit on the end of the connecting rope 15, so as to facilitate the extraction of the connecting rope 15 for replacement.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A leg bone positioning and measuring fixing ring, comprising a first fixing ring (1), a second fixing ring (2) being arranged on one side of the first fixing ring (1), and mounting holes (3) being evenly formed on the outer surfaces of the first fixing ring (1) and the second fixing ring (2), characterized in that: The outer surfaces of the first fixing ring (1) and the second fixing ring (2) are provided with measuring mechanisms, and the parallel state between the first fixing ring (1) and the second fixing ring (2) is detected by measuring the relative distance between the first fixing ring (1) and the second fixing ring (2).

2. A leg bone positioning and measuring fixing ring according to claim 1, characterized in that: The measuring mechanism comprises: a measuring plate (4), a plug-in frame (5) is arranged at one end of the measuring plate (4), and the outer surface of the plug-in frame (5) is penetrated by a fixing bolt (6), a clearance groove (7) is opened on the outer surface of the measuring plate (4), and scale grooves (8) are opened on the upper surface of the measuring plate (4) on both sides of the clearance groove (7), a sliding seat (9) is installed on the outer surface of the measuring plate (4), and a sliding groove (10) is opened on the side surface of the measuring plate (4), and a sliding frame (11) is fixedly arranged on the side surface of the sliding seat (9).

3. A leg bone positioning and measuring fixing ring according to claim 2, characterized in that: The measuring mechanism further comprises: a mounting column (12), the mounting column (12) being fixedly arranged on the upper surface of the sliding seat (9), and the inner surface of the mounting column (12) being connected to the lower end of the extrusion ring (13), and a sliding clamping block (14) being mounted on the upper end of the sliding seat (9), and a connecting rope (15) being clamped between two of the clamping blocks (14).

4. A leg bone positioning and measuring fixing ring according to claim 2, characterized in that: The plug-in frame (5) is fixedly mounted to the first fixing ring (1) and the second fixing ring (2) via fixing bolts (6), and the plug-in frame (5) is designed as a C-shaped opening, and the fixing bolts (6) penetrate the mounting holes (3).

5. A leg bone positioning and measuring fixing ring according to claim 2, characterized in that: The lower surface of the sliding seat (9) is in contact with the upper surface of the measuring plate (4), one end of the sliding frame (11) is located inside the sliding groove (10), and the outer surface of one end of the sliding frame (11) is in contact with the outer surface of the measuring plate (4) having the scale groove (8).

6. A leg bone positioning and measuring fixing ring according to claim 3, characterized in that: The mounting column (12) and the extrusion ring (13) are threadedly connected, and the mounting column (12), the extrusion ring (13), the clamping block (14) and the sliding seat (9) are all concentrically arranged.

7. A leg bone positioning and measuring fixing ring according to claim 3, characterized in that: The clamping block (14) is designed to be truncated cone-shaped with a larger top and a smaller bottom. A spring is connected between the clamping block (14) and the sliding seat (9). A gap is left between the two clamping blocks (14). The lower end side surface of the clamping block (14) is in contact with the upper inner side surface of the extrusion ring (13).

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