Long bone fracture dislocation reduction fixator

Abstract

The utility model discloses a long bone fracture dislocation reduction fixator which comprises an arc-shaped bottom provided with an arc surface, and the arc-shaped bottom supports a normal bone and a dislocation bone through the arc surface; the upper reduction forceps comprise an upper handheld end and an upper occlusion end; the lower reduction forceps and the upper reduction forceps are connected through a rotating shaft, the lower reduction forceps comprise a lower handheld end and a lower occlusion end, the upper occlusion end abuts against the arc-shaped bottom, and the lower occlusion end abuts against the malposed bone; the bone screw is arranged on a normal bone, and at least part of the bone screw extends into a dislocated bone. During reduction, the upper occlusion end abuts against the arc-shaped bottom, the lower occlusion end abuts against the malposed bone, the malposed bone is reduced to the normal position, the medullary cavity axis of the malposed bone coincides with the medullary cavity axis of the normal bone, at the moment, the malposed bone is fixed to the normal bone through the bone screw, reduction of the bone is achieved, and it is guaranteed that the fracture position does not deviate or distort any more.

Description

Technical Field

[0001] This utility model relates to the field of fracture misalignment reduction technology, specifically a long bone fracture misalignment reduction and fixation device. Background Technology

[0002] For the reduction of long bone fractures, the commonly used surgical methods are: First, direct reduction using point reduction forceps; second, reduction using a bone lever; and third, reduction using a retractor.

[0003] The first and second reduction methods are simple to perform, but if there is rotational or separation displacement in the fracture, it can lead to malunion or nonunion. The third reduction method is complex in structure, cumbersome to operate, and requires the use of multiple instruments. Utility Model Content

[0004] The technical problem to be solved by this utility model is: to provide a long bone fracture misalignment reduction and fixation device to solve the technical problems mentioned in the background art.

[0005] The technical solution adopted by this utility model to solve the technical problem of the device is: a long bone fracture dislocation reduction and fixation device, comprising: an arc-shaped base, the arc-shaped base having an arc surface, the arc-shaped base supporting the normal bone and the dislocated bone through the arc surface; an upper reduction clamp, the upper reduction clamp including an upper hand end and an upper biting end; a lower reduction clamp, the lower reduction clamp and the upper reduction clamp connected by a rotating shaft, the lower reduction clamp including a lower hand end and a lower biting end, the upper biting end abutting against the arc-shaped base, and the lower biting end abutting against the dislocated bone; and a bone screw, the bone screw being placed in the normal bone, the bone screw at least partially extending into the dislocated bone.

[0006] The beneficial effects of this invention are as follows: Before reduction, the arc surface of the arc-shaped bottom abuts against the normal bone, and the arc surface of the arc-shaped bottom extends to the normal position of the misaligned bone. During reduction, the upper occlusal end abuts against the arc-shaped bottom, and the lower occlusal end abuts against the misaligned bone, thereby reducing the misaligned bone to its normal position and aligning the medullary cavity axis of the misaligned bone with the medullary cavity axis of the normal bone. At this point, bone screws are used to fix the misaligned bone to the normal bone, thereby achieving bone reduction and ensuring that the fracture site no longer shifts or twists.

[0007] Preferably, it further includes:

[0008] The connecting part has an arc-shaped bottom.

[0009] Hand-held part, hand-held part connecting to connecting part.

[0010] Preferably, it further includes:

[0011] The screw is rotatably mounted on the lower hand end;

[0012] Through hole: The upper hand end is provided with a through hole for the screw to pass through;

[0013] The fastener is screwed onto the screw rod.

[0014] Preferably, the outer peripheral surface of the fastener is provided with anti-slip texture.

[0015] Preferably, the surfaces of the upper and lower occlusal ends opposite each other are provided with occlusal teeth.

[0016] Preferably, it further includes:

[0017] The screw-in groove is located at the end of the bone screw. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the normal bone, dislocated bone, and arc-shaped base before reduction.

[0019] Figure 2 This is a side view of the normal bone, dislocated bone, and curved base before reduction;

[0020] Figure 3 This is a three-dimensional structural diagram of a long bone fracture dislocation reduction and fixation device after reduction.

[0021] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0022] Figure 5 for Figure 3 A magnified view of a section at point B.

[0023] In the diagram: 1. Dislocated bone; 2. Handhold; 3. Connecting part; 4. Normal bone; 5. Arc-shaped base; 51. Arc surface; 6. Upper reduction clamp; 7. Screw; 8. Engaging teeth; 9. Lower reduction clamp; 10. Fixing component; 10. Anti-slip texture; 11. Through hole; 12. Rotating shaft; 13. Bone screw. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] In this document, terms such as "upper," "lower," "inner," and "outer" are established based on the positional relationships shown in the accompanying drawings. Depending on the drawings, the corresponding positional relationships may also change. Therefore, they should not be interpreted as an absolute limitation on the scope of protection. Moreover, relational terms such as "first" and "second" are only used to distinguish one component from another that has the same name, and do not necessarily require or imply any such actual relationship or order between these components.

[0026] Example

[0027] like Figure 1-5As shown, a long bone fracture dislocation reduction and fixation device includes: an arc-shaped base 5, the arc-shaped base 5 having an arc surface 51, the arc-shaped base 5 supporting the normal bone 4 and the dislocated bone 1 through the arc surface 51; an upper reduction clamp 6, the upper reduction clamp 6 including an upper hand end and an upper occlusal end; a lower reduction clamp 9, the lower reduction clamp 9 and the upper reduction clamp 6 connected by a pivot 12, the lower reduction clamp 9 including a lower hand end and a lower occlusal end, the upper occlusal end abutting against the arc-shaped base 5, and the lower occlusal end abutting against the dislocated bone 1; and a bone screw 13, the bone screw 13 being disposed in the normal bone 4, the bone screw 13 at least partially extending into the dislocated bone 1.

[0028] Specifically, before reduction, the arc surface 51 of the arc-shaped base 5 is used to abut against the normal bone 4, and part of the arc surface 51 of the arc-shaped base 5 extends to the normal position of the dislocated bone 1. During reduction, the upper occlusal end abuts against the arc-shaped base 5, and the lower occlusal end abuts against the dislocated bone 1, reducing the dislocated bone 1 to the normal position and making the medullary cavity axis of the dislocated bone 1 coincide with the medullary cavity axis of the normal bone 4. At this time, the bone screw 13 is used to fix the dislocated bone 1 to the normal bone 4, thereby achieving bone reduction and ensuring that the fracture site no longer shifts or twists.

[0029] Furthermore, it also includes: a connecting part 3, which connects to the arc-shaped base 5; and a handle part 2, which connects to the connecting part 3. The connection part 3 and the handle part 2 facilitate fixing the position of the arc-shaped base 5.

[0030] Furthermore, it also includes: a screw 7, which is rotatably disposed at the lower hand end; a through hole 11, which is provided at the upper hand end for the screw 7 to pass through; and a fixing member 10, which is screwed to the screw 7. When the dislocated bone 1 is repositioned to its normal position using the upper repositioning forceps 6 and the lower repositioning forceps 9, the fixing member 10 is screwed on so that it abuts against the upper hand end, thereby fixing the relative position of the upper repositioning forceps 6 and the lower repositioning forceps 9, that is, fixing the dislocated bone 1 to its normal position. At this time, the dislocated bone 1 is then fixed by the bone screw 13.

[0031] Furthermore, the outer peripheral surface of the fastener 10 is provided with anti-slip texture 101. The anti-slip texture 101 makes it easier for the operator to tighten or loosen the fastener 10.

[0032] Furthermore, occlusal teeth 8 are provided on the opposing surfaces of the upper and lower occlusal ends. The opposing surfaces of the upper and lower occlusal ends are their respective occlusal surfaces. The upper occlusal end abuts against the arc-shaped base 5 through the occlusal surface, and the lower occlusal end abuts against the misaligned bone 1 through the occlusal surface. By providing occlusal teeth 8, the friction coefficient of the occlusal surfaces is increased, thus preventing slippage.

[0033] Furthermore, it also includes a screw-in groove, which is provided at the end of the bone screw 13. The screw-in groove is connected to an external tool so that the bone screw 13 can be screwed into the normal bone 4 and extend into the dislocated bone 1.

[0034] The technical features described above can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A long bone fracture malreduction fixator, characterized by, include: The arc-shaped bottom (5) has an arc surface (51) and the arc-shaped bottom (5) supports the normal bone (4) and the misaligned bone (1) through the arc surface (51). Upper reset clamp (6), the upper reset clamp (6) includes an upper hand gripping end and an upper engagement end; The lower reduction clamp (9) and the upper reduction clamp (6) are connected by a rotating shaft (12). The lower reduction clamp (9) includes a lower hand-held end and a lower occlusal end. The upper occlusal end abuts against the arc-shaped base (5), and the lower occlusal end abuts against the dislocated bone (1). A bone screw (13) is disposed on the normal bone (4) and the bone screw (13) extends at least partially into the dislocated bone (1).

2. The long bone fracture malunion reduction fixator of claim 1, wherein, Also includes: Connecting part (3), the connecting part (3) is connected to the arc-shaped bottom (5); Handheld part (2), the handheld part (2) is connected to the connecting part (3).

3. The long bone fracture malunion reduction fixator of Claim 1, wherein, Also includes: Screw (7), which is rotatably disposed at the lower hand end; Through hole (11), the upper hand end is provided with through hole (11) for the screw (7) to pass through. The fastener (10) is screwed to the screw (7).

4. The long bone fracture malunion fixator of Claim 3, wherein, The outer peripheral surface of the fastener (10) is provided with anti-slip texture (101).

5. The long bone fracture malunion reduction fixator of Claim 1, wherein, The upper occlusal end and the lower occlusal end are provided with occlusal teeth (8) on their opposite surfaces.

6. The long bone fracture malunion fixator of Claim 2, wherein, Also includes: A screw-in groove is provided at the end of the bone screw (13).

Images