Wrist joint fixation device

Abstract

The utility model discloses a wrist joint fixing device relates to the technical field of wrist joint external fixation medical instrument, the wrist joint fixing device includes main rod department, first clamping groove subassembly, slave pole part, second clamping groove subassembly and single universal ball head, and the front end of main rod department is provided with the joint subassembly, first clamping groove subassembly sets up on main rod department, and first clamping groove subassembly is used for fixing traction bone needle, the end of slave pole part is provided with mounting hole and the fastening bolt that communicates with mounting hole, second clamping groove subassembly sets up on slave pole part, and second clamping groove subassembly is used for fixing traction bone needle, the ball head end of single universal ball head sets up in the joint subassembly, and the axle end of single universal ball head sets up in mounting hole, and the joint subassembly can clamp the ball head end, and the fastening bolt can compress the axle end.

Description

Technical Field

[0001] This utility model relates to the technical field of external fixation medical devices for the wrist joint, specifically to a wrist joint fixation device. Background Technology

[0002] Clinically, wrist fractures are treated in two ways: non-surgical and surgical. Non-surgical treatment has the disadvantages of easy displacement of the fracture site and slow recovery. Currently, more and more patients are choosing surgical treatment.

[0003] In existing technologies, traction pins are fixed by wrist joint fixation devices during surgery. However, existing fixation devices have complex structures and often use bidirectional universal ball joint rods for angle adjustment. The tightening method after adjustment is time-consuming and laborious. Utility Model Content

[0004] The purpose of this invention is to provide a wrist joint fixation device to solve the problem that existing wrist joint fixation devices are time-consuming and laborious to use.

[0005] Therefore, embodiments of this utility model propose a wrist joint fixation device.

[0006] The wrist joint fixation device according to an embodiment of the present invention includes a main rod, a first slot assembly, a secondary rod, a second slot assembly, and a single universal ball joint. A locking assembly is provided at the front end of the main rod. The first slot assembly is disposed on the main rod and is used to fix a traction bone pin. An installation hole and a fastening bolt communicating with the installation hole are provided at the end of the secondary rod. The second slot assembly is disposed on the secondary rod and is used to fix the traction bone pin. The ball end of the single universal ball joint is disposed within the locking assembly, and the shaft end of the single universal ball joint is disposed within the installation hole. A fastening hole is provided on the shaft end of the single universal ball joint. The locking assembly can clamp the ball end, and the fastening bolt can press against the shaft end, with the front end of the fastening bolt extending into the fastening hole.

[0007] In some embodiments, the first slot assembly includes a first slot and a second slot; the first slot is disposed on the main rod portion, and the first slot is provided with a plurality of first arc-shaped slots and a first threaded hole; the second slot is provided with a plurality of second arc-shaped slots and a second threaded hole, and the second slot can be fixed on the first slot by a threaded fastener to clamp the traction bone needle.

[0008] In some embodiments, the first groove has a cylindrical portion, and the first groove is sleeved on the main rod portion through the cylindrical portion.

[0009] In some embodiments, the main rod portion is provided with a strip groove.

[0010] In some embodiments, the second slot assembly includes a third slot portion, which is provided with a plurality of third arc-shaped grooves and third threaded holes, and the trailing rod portion is provided with a plurality of fourth arc-shaped grooves and fourth threaded holes; the third slot portion can be fixed to the trailing rod portion by a threaded fastener to clamp the traction bone needle.

[0011] In some embodiments, the first slot assembly is used to clamp a traction bone pin with a diameter of 1.5mm-2.5mm.

[0012] In some embodiments, the second slot assembly is used to clamp a traction bone pin with a diameter of 1.25mm-2.0mm.

[0013] In some embodiments, the snap-fit ​​assembly includes a housing, a spherical abutment, and a tightening member; the housing is connected to the front end of the main rod, the spherical abutment is disposed inside the housing, and the tightening member is disposed on the housing and abuts against the spherical abutment; a through hole is provided on the side of the housing, the single universal ball joint passes through the through hole, the single universal ball joint can abut against the spherical abutment, and the spherical abutment can be fixed by tightening the tightening member, so that the single universal ball joint and the spherical abutment are tightly fitted and do not move.

[0014] In some embodiments, scale lines are formed on the surfaces of the main rod and the slave rod, respectively.

[0015] In some embodiments, the main rod and the slave rod are made of any one of polyetheretherketone, stainless steel and carbon fiber.

[0016] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Other features and aspects of this disclosure will become clearer from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a wrist joint fixation device according to an embodiment of the present utility model.

[0019] Figure label:

[0020] Wrist joint fixation device 100, main rod 10, strip groove 11, snap-fit ​​assembly 20, housing 21, spherical abutment 22, tightening member 23, first snap-fit ​​assembly 30, first groove 31, first arc groove 311, first threaded hole 312, second groove 32, second arc groove 321, second threaded hole 322, cylindrical part 33, secondary rod 40, mounting hole 41, fastening bolt 42, fourth arc groove 43, fourth threaded hole 44, second snap-fit ​​assembly 50, third groove 51, third arc groove 511, third threaded hole 512, single universal ball joint 60, threaded fastener 70. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to specific implementation schemes. However, those skilled in the art should understand that the implementation schemes described below are only for illustrating this utility model and should not be regarded as limiting the scope of this utility model. Based on the implementation schemes in this utility model, all other implementation schemes obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] like Figure 1 As shown, the wrist joint fixation device 100 according to an embodiment of the present invention includes a main rod 10, a first slot assembly 30, a secondary rod 40, a second slot assembly 50, and a single universal ball joint 60.

[0023] The front end of the main rod 10 is provided with a snap-fit ​​assembly 20, and a first snap-fit ​​assembly 30 is provided on the main rod 10. The first snap-fit ​​assembly 30 is used to fix the traction bone pin (not shown).

[0024] The end of the rod portion 40 is provided with a mounting hole 41 and a fastening bolt 42 communicating with the mounting hole 41. The second slot assembly 50 is provided on the rod portion 40 and is used to fix the traction bone pin.

[0025] The ball end of the single universal ball joint 60 is located in the snap-fit ​​assembly 20, and the shaft end of the single universal ball joint 60 is located in the mounting hole 41. The shaft end of the single universal ball joint 60 is provided with a fastening hole (not shown). The snap-fit ​​assembly 20 can clamp the ball end, the fastening bolt 42 can press the shaft end, and the front end of the fastening bolt 42 can extend into the fastening hole.

[0026] Compared with the prior art, the present invention uses a single universal ball head 60, which can achieve 360° axial rotation between the single universal ball head 60 and the main rod 10, and can promptly correct various fracture displacements. The rod 40 rotates with the single universal ball head 60, so after adjustment, only tightening the snap-fit ​​component 20 is needed to quickly complete the fixation.

[0027] In some embodiments, such as Figure 1 As shown, the first slot assembly 30 includes a first slot 31 and a second slot 32. The first slot 31 is disposed on the main rod 10 and has a plurality of first arc-shaped slots 311 and first threaded holes 312. The second slot 32 has a plurality of second arc-shaped slots 321 and second threaded holes 322. The second slot 32 can be fixed on the first slot 31 by the threaded fastener 70 to clamp the traction bone needle.

[0028] In some embodiments, such as Figure 1 As shown, the first groove 31 has a cylindrical part 33, and the first groove 31 is sleeved on the main rod 10 through the cylindrical part 33.

[0029] In some embodiments, such as Figure 1 As shown, a strip groove 11 is provided on the main rod 10.

[0030] In some embodiments, such as Figure 1 As shown, the second slot assembly 50 includes a third slot portion 51, which is provided with a plurality of third arc-shaped slots 511 and third threaded holes 512. The rod portion 40 is provided with a plurality of fourth arc-shaped slots 43 and fourth threaded holes 44. The third slot portion can be fixed to the rod portion 40 by the threaded fastener 70 to clamp the traction bone needle.

[0031] In some embodiments, such as Figure 1 As shown, the first slot assembly 30 is used to clamp traction bone pins with a diameter of 1.5mm-2.5mm.

[0032] In some embodiments, such as Figure 1 As shown, the second slot assembly 50 is used to clamp traction bone pins with a diameter of 1.25mm-2.0mm.

[0033] Understandably, the traction bone pin clamped by the first slot assembly 30 is used to fix the arm bone, and its diameter is usually between 1.5mm and 2.5mm. The traction bone pin clamped by the second slot assembly 50 is used to fix the palm bone, and its diameter is usually between 1.25mm and 2.0mm.

[0034] In some embodiments, such as Figure 1 As shown, the snap-fit ​​assembly 20 includes a housing 21, a spherical abutment part 22, and a tightening member 23. The housing 21 is connected to the front end of the main rod part 10. The spherical abutment part 22 is disposed inside the housing 21. The tightening member 23 is disposed on the housing 21 and abuts against the spherical abutment part 22. A through hole is provided on the side of the housing 21. A single universal ball head 60 passes through the through hole and abuts against the spherical abutment part 22. By tightening the tightening member 23, the spherical abutment part 22 can be fixed, so that the single universal ball head 60 and the spherical abutment part 22 are tightly fitted and do not move.

[0035] In some embodiments, such as Figure 1 As shown, scale lines are formed on the surfaces of the main rod 10 and the secondary rod 40, respectively.

[0036] In some embodiments, such as Figure 1 As shown, the main rod 10 and the secondary rod 40 are made of any one of polyetheretherketone, stainless steel and carbon fiber.

[0037] Understandably, the main components are made of polyetheretherketone (PEEK) material, which has low visibility and is light-transmitting, greatly facilitating surgical operations and increasing efficiency and effectiveness. The overall equipment is lightweight, reducing needle tract pressure during surgery and minimizing patient discomfort.

[0038] Understandably, stainless steel is used for the main components, which is more robust, while carbon fiber is used for the main components, which is lighter while maintaining robustness, but is relatively more expensive.

[0039] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0044] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A wrist joint fixation device, characterized in that, include: The main rod portion, wherein a snap-fit ​​assembly is provided at the front end of the main rod portion; A first slot assembly is disposed on the main rod portion and is used to fix the traction bone pin. From the rod portion, the end of the rod portion is provided with a mounting hole and a fastening bolt communicating with the mounting hole; The second slot assembly is disposed on the rod portion and is used to fix the traction bone pin. A single universal ball joint, wherein the ball end of the single universal ball joint is disposed within the snap-fit ​​assembly, the shaft end of the single universal ball joint is disposed within the mounting hole, and a fastening hole is provided on the shaft end of the single universal ball joint, the snap-fit ​​assembly can clamp the ball end, the fastening bolt can press the shaft end, and the front end of the fastening bolt can extend into the fastening hole.

2. The wrist joint fixation device according to claim 1, characterized in that, The first card slot assembly includes a first slot and a second slot; The first groove is provided on the main rod, and the first groove is provided with a plurality of first arc-shaped grooves and first threaded holes; The second groove is provided with a plurality of second arc-shaped grooves and second threaded holes. The second groove can be fixed to the first groove by a threaded fastener to clamp the traction bone needle.

3. The wrist joint fixation device according to claim 2, characterized in that, The first groove has a cylindrical portion, and the first groove is sleeved on the main rod portion through the cylindrical portion.

4. The wrist joint fixation device according to claim 1, characterized in that, The main rod section is provided with a strip groove.

5. The wrist joint fixation device according to claim 1, characterized in that, The second slot assembly includes a third slot portion, on which multiple third arc-shaped slots and third threaded holes are provided, and on the rod portion, multiple fourth arc-shaped slots and fourth threaded holes are provided; The third groove can be fixed to the trailing rod by a threaded fastener to clamp the traction bone needle.

6. The wrist joint fixation device according to claim 1, characterized in that, The first slot assembly is used to clamp traction bone pins with a diameter of 1.5mm-2.5mm.

7. The wrist joint fixation device according to claim 1, characterized in that, The second slot assembly is used to clamp traction bone pins with a diameter of 1.25mm-2.0mm.

8. The wrist joint fixation device according to claim 1, characterized in that, The snap-fit ​​assembly includes a housing, a spherical abutment portion, and a tightening component; The housing is connected to the front end of the main rod, the spherical abutment is disposed inside the housing, and the tightening member is disposed on the housing and abuts against the spherical abutment. The housing has a through hole on its side, and the single universal ball joint passes through the through hole. The single universal ball joint can abut against the spherical abutment part. By tightening the tightening member, the spherical abutment part can be fixed, so that the single universal ball joint and the spherical abutment part fit tightly together and do not move.

9. The wrist joint fixation device according to claim 1, characterized in that, The surfaces of the main rod and the slave rod are respectively formed with scale lines.

10. The wrist joint fixation device according to claim 1, characterized in that, The main rod and the slave rod are made of any one of polyetheretherketone, stainless steel and carbon fiber.

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