A highly adaptable fracture dislocation reduction device

Abstract

This utility model discloses a highly adaptable fracture reduction device, comprising: an elastic ring assembly, which includes multiple rings connected end-to-end; a rotating handle; and a connecting part, one end of which is connected to the elastic ring assembly, and the other end of which is connected to the rotating handle. The elastic ring assembly passes through the normal bone and extends into the dislocated bone. The femur includes normal bone and dislocated bone, both of which have medullary canals. The fracture reduction device passes through the medullary canal of the normal bone and extends into the medullary canal of the dislocated bone to assist in the reduction of the dislocated bone. Preferably, the elastic ring assembly includes three rings connected end-to-end. The connecting part connects the two end rings to form a connection with the elastic ring assembly. When the rings extend into the medullary canal of the dislocated bone, they deform (deform towards a flattened direction) under the action of the inner wall of the medullary canal. Since the outer peripheral surface of the rings abuts against the dislocated bone at this time, rotating the handle can better drive the dislocated bone to reduce, ensuring that the dislocated bone can be reduced and aligned.

Description

Technical Field

[0001] This utility model relates to the field of fracture reduction technology, specifically a fracture misalignment reduction device with strong adaptability. Background Technology

[0002] Femoral fractures are mostly caused by powerful trauma, with some fractures resulting from indirect trauma. Direct external forces, such as car impacts, being crushed by heavy objects, or being run over, often result in significant fracture displacement. Fractures caused by indirect external forces, such as falls from heights, are often oblique. Currently, surgical reduction uses an arc-shaped reduction rod. However, the femur varies from person to person, with different medullary canal diameters, while the arc-shaped reduction rod has a fixed size. Therefore, the gap between the medullary canal and the reduction rod can vary, leading to misalignment and incomplete alignment during reduction. Utility Model Content

[0003] The technical problem to be solved by this utility model is: to provide a fracture misalignment reduction device with strong adaptability, so as to solve the problem that the gap between the medullary cavity and the reduction rod is of different sizes, which causes misalignment and cannot be completely aligned.

[0004] The technical solution adopted by this utility model to solve the technical problem is: a fracture misalignment reduction device with strong adaptability, comprising: an elastic ring assembly, the elastic ring assembly including multiple ring bodies connected end to end; a rotating handle; a connecting part, one end of the connecting part is connected to the elastic ring assembly, the other end of the connecting part is connected to the rotating handle, the elastic ring assembly passes through the normal bone and extends into the misaligned bone.

[0005] The beneficial effects of this invention are as follows: The femur includes normal bone and dislocated bone, both of which have medullary cavities. The fracture reduction device passes through the medullary cavity of the normal bone and extends into the medullary cavity of the dislocated bone to assist in the reduction of the dislocated bone. The elastic ring assembly preferably includes three rings connected end-to-end. A connecting portion connects the two end rings to form a connection with the elastic ring assembly. When the ring extends into the medullary cavity of the dislocated bone, it deforms (deforms towards a flattened direction) under the action of the inner wall of the medullary cavity. Since the outer circumferential surface of the ring abuts against the dislocated bone at this time, rotating the handle can better drive the dislocated bone to reduction, ensuring that the dislocated bone can be reduced and aligned.

[0006] Preferably, it further includes: A connection hole is provided on the rotating handle, and at least part of the connecting part extends into the connection hole.

[0007] Preferably, it further includes: Multiple protrusions are spaced apart on the outer circumferential surface of the ring.

[0008] Preferably, it further includes: Arc-shaped transition section: Arc-shaped transition sections are provided at both ends of the protrusion along the length direction.

[0009] Preferably, the outer surface of the rotating handle is provided with anti-slip texture.

[0010] Preferably, the rotary handle is provided with a through hole. Attached Figure Description

[0011] Figure 1 A schematic diagram illustrating the use of a highly adaptable fracture repositioning device; Figure 2 A schematic diagram of a three-dimensional structure of a fracture misalignment reduction device with strong adaptability; Figure 3 A cross-sectional view of a highly adaptable fracture reduction device; Figure 4 for Figure 3 A magnified view of a section at point A in the middle; Figure 5 A cross-sectional view of another type of fracture displacement reduction device with strong adaptability; Figure 6 for Figure 5 A magnified view of a section at point B in the middle.

[0012] In the diagram: 1. Displaced bone; 2. Normal bone; 3. Connecting part; 4. Rotating handle; 5. Ring body; 6. Protrusion; 61. Arc-shaped transition part; 7. Connecting hole; 8. Through hole. Detailed Implementation

[0013] 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.

[0014] 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.

[0015] Example like Figure 1 , 2 As shown, a highly adaptable fracture misalignment reduction device includes: an elastic ring assembly, which includes multiple rings 5 ​​connected end to end; a rotating handle 4; and a connecting part 3, one end of which is connected to the elastic ring assembly and the other end of which is connected to the rotating handle 4. The elastic ring assembly passes through the normal bone 2 and extends into the misaligned bone 1.

[0016] Specifically, the femur includes a normal bone 2 and a dislocated bone 1. Both the normal bone 2 and the dislocated bone 1 have medullary canals. The fracture reduction device passes through the medullary canal of the normal bone 2 and extends into the medullary canal of the dislocated bone 1 to assist in the reduction of the dislocated bone 1. The elastic ring assembly preferably includes three ring bodies 5 connected end to end. The connecting part 3 connects the two ends of the ring body 5 to form a connection with the elastic ring assembly. When the ring body 5 extends into the medullary canal of the dislocated bone 1, it deforms (deforms in a flattening direction) under the action of the inner wall of the medullary canal. Since the outer peripheral surface of the ring body 5 abuts against the dislocated bone 1 at this time, it can better drive the dislocated bone 1 to be reduced when the handle 4 is rotated, ensuring that the dislocated bone 1 can be reduced and aligned.

[0017] Preferably, the ring 5 is made of spring steel, and the connecting part 3 is integrally formed with either of the two end rings 5.

[0018] like Figure 5 , 6 As shown, it further includes a connecting hole 7, which is disposed in the rotary handle 4, and the connecting part 3 extends at least partially into the connecting hole 7. Connecting the connecting part 3 and the rotary handle 4 via the connecting hole 7 reduces production difficulty and thus lowers production costs. Preferably, the end of the connecting part 3 facing the rotary handle 4 has a cylindrical end, the outer circumferential surface of which has an external thread, and the connecting hole 7 has a matching internal thread; the cylindrical end is connected to the connecting hole 7 via thread engagement.

[0019] like Figure 3 , 4 As shown, it further includes: multiple protrusions 6, which are spaced apart on the outer peripheral surface of the ring body 5. The protrusions 6 are used to increase the friction between the ring body 5 and the inner wall of the medullary canal of the dislocated bone 1, thereby better driving the dislocated bone 1 to reposition. The protrusions 6 are located on the upper and lower sides of the ring body 5, and are located in the middle part of the ring body 5, which is in frequent contact with the inner wall of the medullary canal of the dislocated bone 1.

[0020] Furthermore, it also includes: an arc-shaped transition portion 61, with arc-shaped transition portions 61 provided at both ends of the protrusion 6 along its length. In order to avoid the protrusion 6 affecting the insertion of the ring body 5 into the medullary cavity of the misaligned bone 1, the arc-shaped transition portion 61 is specially provided to reduce the resistance encountered by the ring body 5 when it is inserted into the medullary cavity of the misaligned bone 1.

[0021] Furthermore, the outer surface of the rotary handle 4 is provided with anti-slip texture. The anti-slip texture is used to increase friction and improve the operator's operability.

[0022] like Figure 5 , 6 As shown, the rotary handle 4 is further provided with a through hole 8. The through hole 8 is used to reduce the cost of using the rotary handle 4.

[0023] 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 highly adaptable fracture reduction device, characterized in that, include: An elastic ring assembly, the elastic ring assembly comprising a plurality of rings connected end to end (5); Rotate the handle (4); The connecting part (3) is connected at one end to the elastic ring assembly and at the other end to the rotating handle (4). The elastic ring assembly passes through the normal bone (2) and extends into the misaligned bone (1).

2. The fracture dislocation reduction device with strong adaptability according to claim 1, characterized in that, Also includes: A connecting hole (7) is provided on the rotating handle (4), and the connecting part (3) extends at least partially into the connecting hole (7).

3. The fracture dislocation reduction device with strong adaptability according to claim 1, characterized in that, Also includes: Multiple protrusions (6) are spaced apart on the outer peripheral surface of the ring body (5).

4. The fracture dislocation reduction device with strong adaptability according to claim 3, characterized in that, Also includes: Arc-shaped transition portion (61), the arc-shaped transition portion (61) is provided at both ends of the protrusion (6) along the length direction.

5. A fracture dislocation reduction device with strong adaptability according to claim 1, characterized in that, The outer surface of the rotating handle (4) is provided with anti-slip texture.

6. A fracture dislocation reduction device with strong adaptability according to claim 1, characterized in that, The rotating handle (4) is provided with a through hole (8).

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