Ankle joint osteotomy positioning assembly

Abstract

The utility model relates to an ankle joint osteotomy positioning assembly which comprises a base, an osteotomy plate fixing piece and a limiting piece, the base comprises a first main body, and the first main body is provided with a sliding hole channel; the osteotomy plate fixing piece comprises a second main body, the second main body is located in the sliding hole channel in a sliding mode, and the second main body is further provided with an osteotomy plate fixing part used for being fixedly connected with an ankle joint osteotomy plate; the limiting piece is designed to be capable of locking and unlocking the position of the osteotomy plate fixing piece relative to the base; the ankle joint osteotomy positioning assembly has the advantages of being high in positioning precision and convenient to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to an ankle osteotomy positioning component. Background Art

[0002] Total ankle replacement surgery has become the primary treatment for end-stage joint disease. It involves osteotomy followed by the installation of an artificial joint implant to restore joint motion, significantly improving patients' quality of life. The success of total ankle replacement surgery depends on proper positioning of the ankle joint, proper clearance, and proper soft tissue balance, all of which rely on accurate placement of the prosthesis.

[0003] During ankle replacement surgery, the doctor needs to rely on his or her own experience to install the proximal tibial osteotome on the patient's proximal tibia, and then install the tibial force line inspection device on the proximal tibial osteotome to verify the tibial mechanical axis to confirm whether the installation position of the proximal tibial osteotome is appropriate. Then, the doctor adjusts the proximal tibial osteotome to the appropriate position to guide the doctor to complete the proximal tibial osteotomy operation, ensuring that the lower limb after the proximal tibial osteotomy operation is completed can restore normal joint movement of the ankle joint after the artificial joint prosthesis is assembled. In order to improve the accuracy of the osteotomy operation, a positioning device is usually used to position the osteotomy plate. However, the existing ankle osteotomy positioning device still has problems such as cumbersome operation and inaccurate positioning. In response to this, the utility model proposes an ankle osteotomy positioning component with high positioning accuracy and convenient operation. Utility Model Content

[0004] The utility model aims to provide an ankle joint osteotomy positioning component with high positioning accuracy and convenient operation.

[0005] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0006] An ankle osteotomy positioning assembly, comprising:

[0007] A base, the base comprising a first body, the first body having a sliding channel extending along a first direction and penetrating the first body along a second direction, the first direction and the second direction being perpendicular to each other;

[0008] An osteotomy plate fixing member, the osteotomy plate fixing member comprising a second body, the second body being slidably located within the sliding channel and being slidable in the sliding channel along the first direction and the second direction, the second body further being provided with an osteotomy plate fixing portion for fixing the ankle joint osteotomy plate;

[0009] A limiting member is designed to lock and unlock the position of the osteotomy plate fixing member relative to the base.

[0010] In one embodiment, a first rack is provided on one of the inner wall surfaces of the sliding channel, the first rack extends along a first direction, and a second rack matching the first rack is provided on the back side of the second body opposite to the first rack; the tooth widths of the first rack and the rack extend along the second direction.

[0011] In one embodiment, a tooth width of the second rack is greater than a width of the sliding channel.

[0012] In one embodiment, a tooth width of the first rack is the same as a width of the first body in the second direction, and a tooth width of the second rack is the same as a length of the second body in the second direction.

[0013] In one embodiment, the limiting member is a ball plunger, and a plurality of first limiting holes are provided on the other wall surface of the sliding channel opposite to the wall surface on which the first rack is provided, and a plurality of second limiting holes are provided on the front surface of the second main body. The column of the ball plunger is fixedly connected to the second limiting hole, and the ball head of the ball plunger is matched with the first limiting hole.

[0014] In one embodiment, the plurality of second limiting holes are divided into pairs of two, and the two second limiting holes in the same pair are arranged side by side in the first direction, and the second limiting holes in different pairs are arranged at intervals in the second direction.

[0015] In one embodiment, the column of the ball plunger is fixedly connected to the second limiting hole by threads.

[0016] In one embodiment, the osteotomy plate fixing portion is a second fixing hole provided at both ends of the second body in the second direction.

[0017] In one embodiment, the first body is provided with first fixing holes at both ends in the first direction.

[0018] In one embodiment, a first scale line and a second scale line are respectively provided on the front of the first body and the front of the second body, wherein the first scale line indicates scale in a first direction and the second scale line indicates scale in a second direction.

[0019] The present invention adopts the above technical solution, which has the beneficial effect that the ankle osteotomy positioning assembly provided by the present invention realizes the adjustment of the position of the osteotomy plate through the cooperation between the racks, which can ensure the accuracy and facilitate the adjustment of the position of the osteotomy plate during the operation, thereby facilitating the operation during the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic perspective view of the base is shown.

[0021] Figure 2 A schematic diagram showing the side of the base is shown.

[0022] Figure 3 A schematic diagram showing the front side of the base is shown.

[0023] Figure 4 A three-dimensional schematic diagram of an osteotomy plate fixation component is shown.

[0024] Figure 5 A schematic diagram showing the front view of an osteotomy plate fixation device.

[0025] Figure 6 A schematic diagram of a limiting member is shown.

[0026] Figure 7 A schematic diagram showing the side of an ankle osteotomy positioning assembly. DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying drawings to describe in detail the preferred embodiments of the present invention so that the purpose, features and advantages of the present invention can be more clearly understood. It should be understood that the embodiments shown in the accompanying drawings are not intended to limit the scope of the present invention, but are only intended to illustrate the essential spirit of the technical solution of the present invention.

[0028] In the following description, for the purpose of illustrating the various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the relevant art will recognize that the embodiments may be practiced without one or more of these specific details. In other cases, well-known devices, structures, and techniques associated with this application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0029] Unless the context requires otherwise, throughout the specification and claims, the word "comprise" and variations such as "include" and "have" should be construed in an open, inclusive sense, that is, should be interpreted to mean "including, but not limited to."

[0030] Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any manner in one or more embodiments.

[0031] As used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally employed in its sense including "and / or" unless the context clearly dictates otherwise.

[0032] In the following description, in order to clearly demonstrate the structure and working mode of the present invention, many directional words will be used for description, but words such as "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", and "down" should be understood as convenient terms and should not be understood as restrictive terms.

[0033] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0034] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0035] like Figure 1-Figure 7 As shown, this embodiment provides an ankle osteotomy positioning assembly, which includes a base 1, an osteotomy plate fixing member 2, and a limiting member 3. The base 1 includes a rectangular first body 10, which has a sliding channel 11 extending along a first direction and penetrating the first body 10 along a second direction. The first direction herein refers to the length direction of the first body 10, and the second direction refers to the width direction of the first body 10.

[0036] The two inner walls of the sliding channel 11 extending along the length of the first body 10 are defined as a first wall 101 and a second wall 102, respectively. The first wall 101 is provided with a first rack 12 extending along the length of the first body 10. The first rack 12 is composed of a plurality of first gear teeth arranged along the length of the first body 10. The second wall 102 is provided with a plurality of first limiting holes 13 arranged in a multi-row array, wherein the tooth groove of each gear tooth of the first rack 12 is arranged corresponding to a row of the plurality of first limiting holes 13. A first fixing hole 14 is also provided at each end of the length of the first body 10, through which the base 1 can be secured to the patient's body during surgery.

[0037] The osteotomy plate fixture 2 includes a generally rectangular second body 20, which is slidably disposed within the sliding channel 11. A second rack 21 is disposed on the back surface of the second body 20, opposite the first wall 101 of the sliding channel 11. The second rack 21 comprises a plurality of second gear teeth arranged along the length of the first body 10. The second gear teeth of the second rack 21 cooperate with the first gear teeth of the first rack 12, allowing the second gear teeth to mesh with the first gear teeth. The engagement between the second rack 21 and the first rack 12 allows the osteotomy plate fixture 2 to move within the sliding channel 11 along the length of the first body 10. Furthermore, the tooth width of the first gear teeth corresponds to the width of the first body 10, while the tooth width of the second gear teeth corresponds to the length of the second body 20. When the second gear teeth mesh with the first gear teeth, the second body 20 can also move along the width of the first body 10.

[0038] A second fixing hole 22 is also provided at both ends of the second main body 20 in the longitudinal direction. The osteotomy plate fixing member 2 is fixedly connected to the osteotomy plate by a fixing bolt passing through the second fixing hole 22, so that the osteotomy plate can move synchronously with the movement of the osteotomy plate fixing member 2 relative to the base 1, thereby adjusting the position of the osteotomy plate.

[0039] A plurality of second limiting holes 23 are provided on the front surface of the second body 20 that faces the second wall 102 of the sliding channel 11. In this embodiment, the plurality of second limiting holes 23 are divided into pairs, with the two second limiting holes 23 in a pair being arranged side by side in the longitudinal direction of the first body 10, and the second limiting holes 23 in different pairs being spaced apart in the width direction of the first body 10.

[0040] The limiting member 3 is used to limit the position of the osteotomy plate fixing member 2 relative to the base 1. The limiting member 3 used in this embodiment is a ball plunger. A ball plunger is fixedly installed in each second limiting hole 23. The cylindrical body of the ball plunger is threadedly connected to the second limiting hole 23. The ball head of the ball plunger cooperates with the first limiting hole 13 to fix the osteotomy plate fixing member 2 relative to the base 1. When a certain force is applied, the osteotomy plate fixing member 2 can be moved relative to the base 1, thereby achieving the purpose of adjusting the position of the osteotomy plate.

[0041] See also Figure 3 and Figure 5 A first scale line 15 and a second scale line 24 are respectively provided on the front of the first body 10 and the front of the second body 20. The first scale line 15 is used to reflect the position of the osteotomy plate fixture 2 in the length direction of the first body 10, and the second scale line 24 is used to reflect the position of the osteotomy plate fixture 2 in the width direction of the first body 10, so as to facilitate more precise adjustment of the position of the osteotomy plate during surgery.

[0042] While the preferred embodiments of the present invention have been described in detail above, it should be understood that, after reading the above teachings of the present invention, those skilled in the art may make various changes or modifications to the present invention. Such equivalents also fall within the scope of the claims appended hereto.

Claims

1. An ankle osteotomy positioning assembly, characterized in that: include: A base, the base comprising a first body, the first body having a sliding channel extending along a first direction and penetrating the first body along a second direction, the first direction and the second direction being perpendicular to each other; An osteotomy plate fixing member, the osteotomy plate fixing member comprising a second body, the second body being slidably located within the sliding channel and being slidable in the sliding channel along the first direction and the second direction, the second body further being provided with an osteotomy plate fixing portion for fixing the ankle joint osteotomy plate; A limiting member is designed to lock and unlock the position of the osteotomy plate fixing member relative to the base.

2. The ankle osteotomy positioning assembly according to claim 1, wherein: A first rack is provided on one of the inner wall surfaces of the sliding channel, and the first rack extends along the first direction. A second rack matching the first rack is provided on the back side of the second body opposite to the first rack; the tooth widths of the first rack and the rack extend along the second direction.

3. The ankle osteotomy positioning assembly according to claim 2, wherein: The tooth width of the second rack is greater than the width of the sliding channel.

4. The ankle osteotomy positioning assembly according to claim 3, wherein: The tooth width of the first rack is the same as the width of the first body in the second direction, and the tooth width of the second rack is the same as the length of the second body in the second direction.

5. The ankle osteotomy positioning assembly according to claim 2, wherein: The limiting member is a ball plunger, and a plurality of first limiting holes are provided on the other wall of the sliding channel opposite to the wall on which the first rack is provided, and a plurality of second limiting holes are provided on the front of the second main body. The column of the ball plunger is fixedly connected to the second limiting hole, and the ball head of the ball plunger is matched with the first limiting hole.

6. The ankle osteotomy positioning assembly according to claim 5, wherein: The plurality of second limiting holes are divided into pairs of two, and the two second limiting holes in the same pair are arranged side by side in the first direction, and the second limiting holes in different pairs are arranged at intervals in the second direction.

7. The ankle osteotomy positioning assembly according to claim 5, wherein: The column of the ball plunger is threadedly connected and fixed to the second limiting hole.

8. The ankle osteotomy positioning assembly according to claim 1, wherein: The osteotomy plate fixing portion is a second fixing hole provided at two ends of the second body in the second direction.

9. The ankle osteotomy positioning assembly according to claim 1, wherein: The first body is provided with first fixing holes at both ends in the first direction.

10. The ankle osteotomy positioning assembly according to claim 1, wherein: A first scale line and a second scale line are respectively provided on the front of the first body and the front of the second body. The first scale line indicates scale in a first direction, and the second scale line indicates scale in a second direction.

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