CN111035479A

CN111035479A - Prosthetic prosthesis and femur structure with same

Info

Publication number: CN111035479A
Application number: CN201911358733.1A
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: 2020-04-21

Abstract

The invention provides a prosthetic prosthesis and a femoral structure with the same, wherein the prosthetic prosthesis is used for knee joint surgery and comprises: a first patch assembly and a second patch assembly, the first patch assembly being positionally adjustable relative to the second patch assembly to fill a contained defect site at the metaphysis of the knee joint by changing the relative positional relationship between the first patch assembly and the second patch assembly. The prosthesis solves the problem that the specification of the filling prosthesis is difficult to be matched with the femoral defect part in the prior art.

Description

Prosthetic prosthesis and femur structure with same

Technical Field

The invention relates to the technical field of medical treatment, in particular to a prosthetic prosthesis and a femoral structure with the prosthetic prosthesis.

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 femoral condyle metaphysis is subjected to inclusive defect, the stability of the femoral condyle needs to be reconstructed through a filling block, at present, 4 to 5 prostheses with different specifications are provided for most of the existing filling block prostheses, 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 is difficult to realize, if the filling block is small, bone cement is needed to fill, if the filling block is large, the defective bone is needed to be cut through a tool to realize fit with the filling block with the large specification, but larger bone defects can be caused.

Disclosure of Invention

The invention mainly aims to provide a prosthetic prosthesis and a femoral structure with the same, so as to solve the problem that the specification of a filling prosthesis in the prior art is difficult to adapt to a femoral defect part.

In order to achieve the above object, according to one aspect of the present invention, there is provided a prosthesis for knee joint surgery, the prosthesis comprising: a first patch assembly and a second patch assembly, the first patch assembly being positionally adjustable relative to the second patch assembly to fill a contained defect site at the metaphysis of the knee joint by changing the relative positional relationship between the first patch assembly and the second patch assembly.

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 and be connected through first slip tooth group and the cooperation of second slip tooth group.

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.

Further, a connecting portion is provided on the first and/or second patch components for connection with the metaphysis of the knee joint.

Further, the first patch member is provided with a first coupling hole so that a screw can pass through the first coupling hole to fix the first patch member to one side of the inclusive defect site of the metaphysis of the knee joint, and the second patch member is provided with a second coupling hole so that the screw can pass through the first coupling hole to fix the second patch member to the other side of the inclusive defect site of the metaphysis of the knee joint.

According to another aspect of the invention, there is provided a femoral structure comprising a femoral body and a prosthetic prosthesis, the prosthetic prosthesis being as described above.

The repair prosthesis applying the technical scheme of the invention is used for filling the defect part of a joint or a bone, and comprises two patch components, each patch component can also be provided with a plurality of filling blocks, the plurality of filling blocks form the shape matched with the defect part, and the first patch component and the second patch component can relatively move close to or away from each other to change the shape of the repair prosthesis so as to adapt to the size of the defect part, so that the repair prosthesis can be just filled in the defect part by adjusting the shape of the repair prosthesis, and the problem that the specification of the repair prosthesis in the prior art is difficult to be matched with the defect part of the tibia is solved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, 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 structure of an embodiment of a femoral construct according to the present invention;

FIG. 2 illustrates a first perspective view of a first patch assembly embodiment of the prosthetic prosthesis of the present invention;

FIG. 3 illustrates a schematic view from a second perspective of a first patch assembly embodiment of the prosthetic prosthesis of the present invention;

FIG. 4 illustrates a schematic view from a first perspective of a second patch assembly embodiment of the prosthetic prosthesis of the present invention;

FIG. 5 illustrates a second perspective view of a second patch assembly embodiment of the prosthetic prosthesis of the present invention;

FIG. 6 shows a schematic view from a first perspective of a first embodiment of the prosthetic prosthesis of the invention;

FIG. 7 shows a schematic view from a second perspective of a first embodiment of the prosthetic prosthesis of the invention;

FIG. 8 shows a schematic view from a first perspective of a second embodiment of the prosthetic prosthesis of the invention;

FIG. 9 shows a second perspective view of a second embodiment of the prosthetic prosthesis of the invention;

figure 10 illustrates a schematic view of a femoral body and defect site of a femoral construct embodiment 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 connection hole; 20. a second patch assembly; 21. a second sliding tooth set; 22. a second connection hole; 30. a defect site; 40. a femoral bone body; 50. and (4) screws.

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 embodiments with reference to the attached drawings.

The present invention provides a prosthesis for use in knee joint surgery, and with reference to fig. 1 to 10, the prosthesis comprises: 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 cosmetic 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 invention provides a repair prosthesis which is used for filling a defect part of a joint or a bone and comprises two patch components, wherein each patch component can be also provided with a plurality of filling blocks, the plurality of filling blocks form a shape matched with the defect part, and a first patch component 10 and a second patch component 20 can move relatively close to or away from each other to change the shape of the repair prosthesis so as to adapt to the size of the defect part, so that the repair prosthesis is just filled in the defect part by adjusting the shape of the repair prosthesis, and the problem that the specification of the repair prosthesis in the prior art is difficult to be matched with the defect part of a tibia is 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.

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.

A coupling portion is provided on the first and/or

second patch assemblies

10, 20 for coupling with the metaphysis of the knee joint.

A first coupling aperture 12 is provided in the first patch member 10 to allow a screw to pass through the first coupling aperture 12 to secure the first patch member 10 to one side of the knee metaphyseal containment defect site 30, and a second coupling aperture 22 is provided in the second patch member 20 to allow a screw to pass through the first coupling aperture 12 to secure the second patch member 20 to the other side of the knee metaphyseal containment defect site 30.

The invention also provides a femoral structure, which comprises a femoral body 40 and the repair prosthesis, wherein the repair prosthesis is the repair prosthesis.

The prosthetic prosthesis of the present invention is used to fill a missing defect site on a femoral body.

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

the invention relates to a repair prosthesis and a femur structure, the femur structure is provided with an adjustable assembly type tibia bone defect repair prosthesis, the repair prosthesis is formed by combining a first patch component 10 and a second patch component 20, the first patch component 10 and the second patch component 20 are engaged and assembled through a plurality of teeth, so that the minimum adjustment distance of 1mm gradient can be realized, the damage to defective bone can be reduced to the maximum extent, after the prosthesis is adjusted to a proper position, bone grafting screws 50 are respectively used for fixing filling blocks on femur condyles through auxiliary connecting holes of the filling blocks, and finally the femur condylar prosthesis is implanted.

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.

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 unless specifically stated otherwise. 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 is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, 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 simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered 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 the terms have no special meanings unless otherwise stated, 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 prosthetic prosthesis for use in knee joint surgery, 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 cosmetic 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 prosthesis according to claim 1, characterized in that said first (10) and second (20) patch assemblies are relatively movably arranged to move towards or away from each other.

3. Prosthesis according to claim 2, characterized in that said first patch assembly (10) is provided with a first sliding portion and said second patch assembly (20) is provided with a second sliding portion, said first patch assembly (10) being movable with respect to said second sliding portion by means of said first sliding portion.

4. Prosthesis according to claim 2, characterized in that said first patch assembly (10) is provided with a first set of sliding teeth (11) and said second patch assembly (20) is provided with a second set of sliding teeth (21), said first patch assembly (10) being coupled in cooperation with said second set of sliding teeth (21) through said first set of sliding teeth (11).

5. Prosthesis according to claim 4, characterized in that said first set of sliding teeth (11) comprises a first rack and a second rack, said second set of sliding teeth (21) comprises a third rack and a fourth rack, said first rack being arranged opposite said third rack and said second rack being arranged opposite said fourth rack.

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

7. Prosthesis according to claim 4, characterized in that said second sliding set of teeth (21) is made of elastic material.

8. Prosthesis according to claim 4, characterized in that said first set of sliding teeth (11) is of integral structure with said first patch element (10) and said second set of sliding teeth (21) is of integral structure with said second patch element (20).

9. Prosthesis according to claim 1, characterized in that said first (10) and/or second (20) patch assembly is provided with a connection portion for connection with the metaphysis of the knee joint.

10. Prosthesis according to claim 9, characterized in that said first patch element (10) is provided with a first coupling hole (12) to allow a screw to pass through said first coupling hole (12) to fix said first patch element (10) on one side of the knee metaphyseal containment defect (30), and said second patch element (20) is provided with a second coupling hole (22) to allow a screw to pass through said first coupling hole (12) to fix said second patch element (20) on the other side of the knee metaphyseal containment defect (30).

11. A femoral structure comprising a femoral body (40) and a prosthetic prosthesis, characterized in that said prosthetic prosthesis is a prosthetic prosthesis according to any one of claims 1 to 10.