CN211560544U

CN211560544U - Tibia structure

Info

Publication number: CN211560544U
Application number: CN201922375437.4U
Authority: CN
Inventors: 刘昆玺
Original assignee: Beijing AK Medical Co Ltd
Current assignee: Beijing AK Medical Co Ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-09-25
Anticipated expiration: 2029-12-25

Abstract

The utility model provides a tibial structure for knee joint operation, tibial structure includes: a tibial body; a prosthetic prosthesis for filling a defect site of the metaphysis of the tibial body, the prosthetic prosthesis comprising a first patch component and a second patch component, the first patch component being adjustably positionable relative to the second patch component to fill a contained defect site of the metaphysis of the knee joint by changing the relative positional relationship between the first patch component and the second patch component. The utility model discloses a tibial structure has solved the specification of filling the false body among the prior art and has been difficult to the adaptation problem with the defective position of shin bone.

Description

Tibia structure

Technical Field

The utility model relates to a medical prosthesis field particularly, relates to a tibial structure.

Background

With the increase of total knee replacement, the number of knee revision operations is also increasing year by year, and postoperative infection and prosthesis loosening are the main reasons for knee revision. Whether infection or prosthesis loosening can bring about bone defect, and the serious bone defect influences the stability of the prosthesis after installation, so that the bone defect needs to be filled in clinic, the stability of prosthesis installation is reconstructed, and the service life of the prosthesis is prolonged.

When the proximal tibia is subjected to containment defect, the stability of a tibial platform needs to be reconstructed through a filling block, most of the existing filling block prostheses provide prostheses with sizes from 4 to 5 specifications, the difference between every two specifications is 5mm to 10mm, and in clinical practical application, because the sizes of bone defects are different, perfect fit with a bone defect surface cannot be realized, bone cement needs to be used for filling, otherwise, the defective bone is cut off through a tool so as to fit with a filling block with a large specification, and larger bone defect is caused.

SUMMERY OF THE UTILITY MODEL

The main object of the utility model is to provide a tibia structure to the specification of the filling prosthesis among the solution prior art is difficult to the adaptation problem with the damaged position of shin bone.

In order to achieve the above object, according to one aspect of the present invention, there is provided a tibial structure for use in knee joint surgery, the tibial structure comprising: a tibial body; a prosthetic prosthesis for filling a defect site of the metaphysis of the tibial body, the prosthetic prosthesis comprising a first patch component and a second patch component, the first patch component being adjustably positionable relative to the second patch component to fill a contained defect site of the metaphysis of the knee joint by changing the relative positional relationship between the first patch component and the second patch component.

Further, the first and second patch assemblies are relatively movably disposed to move toward or away from each other.

Furthermore, a first sliding portion is arranged on the first patch assembly, a second sliding portion is arranged on the second patch assembly, and the first patch assembly moves relative to the second sliding portion through the first sliding portion.

Furthermore, first mend a subassembly and be equipped with first slip tooth group, be equipped with second slip tooth group on the second mend a subassembly, first mend a subassembly through first slip tooth group with second slip tooth group cooperation is connected.

Further, the first sliding tooth group comprises a first rack and a second rack, the second sliding tooth group comprises a third rack and a fourth rack, the first rack and the third rack are arranged oppositely, and the second rack and the fourth rack are arranged oppositely.

Further, the third rack and the fourth rack are relatively movably disposed to move toward or away from each other.

Further, the second sliding tooth group is made of elastic materials.

Furthermore, the first sliding tooth group and the first patch assembly are of an integrally formed structure, and the second sliding tooth group and the second patch assembly are of an integrally formed structure.

Furthermore, a connecting part is arranged on the prosthetic prosthesis and is used for being connected with the tibia body.

Furthermore, the connecting part comprises a first clamping groove and a second clamping groove, and the first clamping groove is arranged on the first patch component, so that the first patch component is fixed on the tibia body through the first clamping groove; the second clamping groove is formed in the second patch component, so that the second patch component is fixed to the tibia body through the second clamping groove.

Use the technical scheme of the utility model tibial structure mainly be applied to in the knee joint operation, in order to be used for restoreing the defective site of shin bone body metaphysis, this tibial structure includes shin bone body and prosthetic parts, prosthetic parts includes first filling block subassembly and second filling block subassembly, the removal that first filling block subassembly and second filling block subassembly can be close to relatively or keep away from is in order to change prosthetic parts's shape, in order to adapt to the size at defective site, thereby through adjusting prosthetic parts's shape so that prosthetic parts just in time are filled in defective site department to prosthetic parts, the specification of having solved the filling prosthetic parts among the prior art is difficult to the adaptation problem with the damaged site of shin bone.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic overall structural view of an embodiment of a tibial construct according to the present invention;

fig. 2 illustrates a first perspective view of a first patch assembly embodiment of the tibial construct of the present invention;

fig. 3 illustrates a second perspective view of a first patch assembly embodiment of the tibial construct of the present invention;

fig. 4 illustrates a first perspective view of a second patch assembly embodiment of the tibial construct of the present invention;

fig. 5 illustrates a second perspective view of a second patch assembly embodiment of the tibial construct of the present invention;

fig. 6 shows a schematic view of a first embodiment of a tibial construct prosthetic prosthesis of the present invention;

fig. 7 shows a schematic view of a second embodiment of the tibial construct prosthetic prosthesis of the present invention;

fig. 8 is a schematic view of a tibial body and a defect site of an embodiment of the tibial construct of the present invention.

Wherein the figures include the following reference numerals:

10. a first patch assembly; 11. a first sliding tooth set; 12. a first card slot; 20. a second patch assembly; 21. a second sliding tooth set; 22. a second card slot; 30. a defect site; 40. a tibial body.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The utility model provides a tibial structure for knee joint operation please refer to fig. 1 to 8, tibial structure includes: a tibial body 40; a prosthetic for filling a defect site 30 of the metaphysis of a tibial body 40, the prosthetic comprising a first patch component 10 and a second patch component 20, the first patch component 10 being positionally adjustable relative to the second patch component 20 to fill a contained defect site 30 of the metaphysis of the knee joint by changing the relative positional relationship between the first patch component 10 and the second patch component 20.

The utility model provides a tibial structure mainly is applied to in the knee joint operation, in order to be used for restoreing the defective site 30 of 40 metaphysis of shin bone end of shin bone, this tibial structure includes shin bone body 40 and prosthetic parts, prosthetic parts includes first filling block subassembly 10 and second filling block subassembly 20, the removal that first filling block subassembly 10 and second filling block subassembly 20 can be close to relatively or keep away from is in order to change the shape of prosthetic parts, in order to adapt to the size at defective site, thereby through adjusting prosthetic parts's shape so that prosthetic parts just in time are filled in defective site department to the messenger, the specification of the filling prosthetic parts among the prior art and the damaged site of shin bone are difficult to the adaptation problem have been solved.

The first and second patch assemblies 10 and 20 are relatively movably disposed to move toward or away from each other. The first patch assembly 10 is provided with a first sliding portion, the second patch assembly 20 is provided with a second sliding portion, and the first patch assembly 10 moves relative to the second sliding portion through the first sliding portion.

The first patch assembly 10 and the second patch assembly 20 in this embodiment are slidably disposed relative to each other.

Preferably, the tibial construct further comprises a locking assembly for locking the first and second patch assemblies 10, 20 together, wherein in use, the relative positions of the first and

second patch assemblies

10, 20 are moved, and after the relative positions are moved, the locking assembly secures the first and

second patch assemblies

10, 20 together for filling the defect site.

The first patch assembly 10 is provided with a first sliding tooth group 11, the second patch assembly 20 is provided with a second sliding tooth group 21, and the first patch assembly 10 is connected with the second sliding tooth group 21 through the first sliding tooth group 11 in a matching manner. The first sliding tooth group 11 includes a first rack and a second rack, the second sliding tooth group 21 includes a third rack and a fourth rack, the first rack is disposed opposite to the third rack, and the second rack is disposed opposite to the fourth rack.

The position adjustment relationship between the first patch assembly 10 and the second patch assembly 20 is realized by the rack in this embodiment.

The third and fourth racks are relatively movably disposed to move toward or away from each other.

In this embodiment, when the second patch assembly is inserted into the first patch assembly, the third rack and the fourth rack are moved close to each other, and then placed between the first rack and the second rack, and the third rack and the fourth rack are moved apart from each other, so that the third rack is engaged with the first rack, and the second rack is engaged with the fourth rack, thereby positioning the positional relationship between the first patch assembly 10 and the second patch assembly 20.

Preferably, the second sliding tooth group 21 is made of an elastic material. Therefore, when the pressing device is used, the third rack and the fourth rack can be pressed firstly and then placed between the first rack and the second rack.

The first sliding tooth set 11 and the first patch assembly 10 are integrally formed, and the second sliding tooth set 21 and the second patch assembly 20 are integrally formed.

The prosthesis is provided with a connection portion for connection with the tibial body 40. The connecting part comprises a first clamping groove 12 and a second clamping groove 22, the first clamping groove 12 is arranged on the first patch component 10, so that the first patch component 10 is fixed on the tibia body 40 through the first clamping groove 12; the second slot 22 is disposed on the second patch assembly 20 such that the second patch assembly 20 is secured to the tibial body 40 via the second slot 22.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

the utility model relates to a tibial structure, this tibial structure have the defective prosthetic devices of adjustable matched stack type shin bone, this prosthetic devices is formed by the combination of first patch subassembly 10 and second patch subassembly 20, and first patch subassembly 10 and second patch subassembly 20 mesh the matched stack through a plurality of teeth and use to can realize the adjustment distance of minimum 1mm gradient, furthest's reduction is to the destruction of defective sclerotin, implant tibial plateau false body subassembly after adjusting to suitable position.

The first patch component 10 and the second patch component 20 are made of biological medical materials, and the surfaces of the first patch component and the second patch component are mostly made of porous structures or are subjected to surface roughening treatment through a coating technology.

The prosthetic prosthesis described above has a height adjustment range of between 10mm and 50 mm.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and 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 interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A tibial construct for use in knee surgery, the tibial construct comprising:

a tibial body (40);

a prosthetic prosthesis for filling a defect site (30) of the metaphysis of the tibial body (40), the prosthetic prosthesis comprising a first patch component (10) and a second patch component (20), the first patch component (10) being positionally adjustable relative to the second patch component (20) to fill a inclusive defect site (30) of the metaphysis of the knee joint by changing the relative positional relationship between the first patch component (10) and the second patch component (20).

2. The tibial construct of claim 1, wherein said first and second patch assemblies (10, 20) are relatively movably disposed to move toward or away from each other.

3. The tibial construct of claim 2, wherein said first patch assembly (10) has a first sliding portion and said second patch assembly (20) has a second sliding portion, said first patch assembly (10) being movable relative to said second sliding portion by said first sliding portion.

4. The tibial structure of claim 2, wherein said first patch assembly (10) is provided with a first set of sliding teeth (11), said second patch assembly (20) is provided with a second set of sliding teeth (21), said first patch assembly (10) being cooperatively connected to said second set of sliding teeth (21) through said first set of sliding teeth (11).

5. The tibial structure of claim 4, wherein said first sliding set of teeth (11) comprises a first rack and a second rack, said second sliding set of teeth (21) comprises a third rack and a fourth rack, said first rack being disposed opposite said third rack, said second rack being disposed opposite said fourth rack.

6. The tibial construct of claim 5, wherein said third and fourth racks are relatively movably disposed to move toward or away from each other.

7. Tibial structure according to claim 4, characterized in that said second sliding tooth group (21) is made of an elastic material.

8. The tibial structure of claim 4, wherein said first sliding set of teeth (11) is of integral construction with said first patch component (10) and said second sliding set of teeth (21) is of integral construction with said second patch component (20).

9. Tibial structure according to claim 1, characterized in that said prosthesis is provided with a connection portion for connection with said tibial body (40).

10. The tibial construct of claim 9, wherein said connecting portion comprises a first slot (12) and a second slot (22), said first slot (12) being disposed on said first patch assembly (10) such that said first patch assembly (10) is secured to said tibial body (40) by said first slot (12); the second clamping groove (22) is formed in the second patch assembly (20), so that the second patch assembly (20) is fixed to the tibia body (40) through the second clamping groove (22).