CN108938148B - Bone block is filled to pestle and mortar joint - Google Patents

Abstract

The invention provides a pestle and mortar joint filling bone block, which comprises the following components: a filling structure for filling in bone; the cup structure is replaceably connected to the filling structure, and has a concave articular surface for mating with the pestle-type joint. Wherein, the filling structure is used for filling in the skeleton in order to realize connecting, and the articular surface of mortar type structure is used for matcing with the pestle type joint, because the mortar type structure is interchangeably connected with the filling structure, can select the mortar type structure of shape adaptation according to patient's specific bone defect condition like this to can realize accurate filling and can resume good articular surface effect. Therefore, according to the technical scheme, the matching effect of the pestle-and-socket joint filling bone block and the applicability of the pestle-and-socket joint filling bone block can be improved.

Description

Ball and socket joint filler

technical field

The invention relates to the technical field of medical devices, in particular to a ball and socket joint filling bone block.

Background technique

The pestle-and-socket joint is a type of human joint, mainly including the shoulder joint, hip joint and other small joints. This physiological structure can realize the universal movement of the limbs. When the club-and-socket joint is damaged or traumatized and a bone defect is formed, it can be repaired by joint replacement. During the operation, it is necessary to accurately fill the defect and reconstruct the spherical articular surface in order to fix the acetabular prosthesis well and restore joint function. However, the forms of bone defects are different, and there is no fixed shape. The existing club-and-socket joint filling bone block is an integrated structure, which cannot simultaneously take into account the effect of precise filling and restoration of the articular surface, and cannot be well matched with the patient's own club-and-socket joint.

Contents of the invention

The invention provides a method to solve the problem of inaccurate measurement results in the prior art.

In order to solve the above problems, the present invention provides a ball and socket joint filling bone block, including: a filling structure, used to fill in the bone; a socket structure, replaceably connected with the filling structure, the socket structure has a concave articular surface, The articular surface is designed to match the club joint.

Further, the socket structure includes a plurality of bone sub-blocks, each of which can be selectively connected with the filling structure.

Further, the bone sub-block has a contact surface, and the contact surfaces of multiple bone sub-blocks form an articular surface.

Further, the filling bone block for the ball-and-socket joint further includes: a first locking part, which is used for detachably connecting the socket structure and the filling structure.

Further, the first locking part includes: a first locking rod, which passes through the socket structure, and the first locking rod is detachably connected to the filling structure; a lock cap is arranged at one end of the first locking rod, and the socket structure is located Between the cap and the filling structure, the locking cap is used to compress the socket structure.

Further, the first locking rod has an external thread, the filling structure has an internal thread matched with the external thread, the articular surface has a first groove, and the lock cap is located in the first groove.

Further, there are multiple first locking parts, and the multiple first locking parts are set in one-to-one correspondence with the multiple bone sub-blocks.

Further, the angle of the socket structure is adjustable on the filling structure.

Further, the filling structure has a first connecting surface, the socket-shaped structure has a second connecting surface, the second connecting surface and the articular surface are respectively located on both sides of the socket-shaped structure, the second connecting surface abuts against the first connecting surface, and the second connecting surface The connection surface can rotate relative to the first connection surface.

Further, the bone block filling the ball-and-socket joint further includes: a second locking part, which is used to limit the rotational position of the socket-shaped structure on the filling structure.

Applying the technical solution of the present invention, the ball-and-socket joint filling bone block is set as a split structure including a filling structure and a socket-shaped structure, wherein the filling structure is used to fill in the bone to realize connection, and the articular surface of the socket-shaped structure is used to connect with The club-shaped joint is matched, because the socket-shaped structure is replaceably connected with the filling structure, so that the shape-fitting socket-shaped structure can be selected according to the specific bone defect of the patient, so that accurate filling can be achieved and a good articular surface effect can be restored. Therefore, the technical solution of the present invention can improve the matching effect of the club-joint filler bone block and the club-shaped joint and the applicability of the ball-and-socket joint filler bone block.

Description of drawings

The accompanying drawings constituting a part of the present application are used to provide a further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the attached picture:

Fig. 1 shows a schematic structural view of a ball-and-socket joint filling bone block provided by an embodiment of the present invention;

Fig. 2 shows the bottom view of Fig. 1;

FIG. 3 shows a schematic structural diagram of the first locking part in FIG. 1 .

Wherein, the above-mentioned accompanying drawings include the following reference signs:

10. Filling structure; 20. Acetabular structure; 21. Articular surface; 22. Bone fragment; 23. Contact surface; 30. The first locking part.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

As shown in Figures 1 to 3, the embodiment of the present invention provides a ball and socket joint filling bone block, including: a filling structure 10, used to fill in the bone; a socket-shaped structure 20, replaceably connected with the filling structure 10 , the socket-shaped structure 20 has a concave articular surface 21, and the articular surface 21 is used to match with the club-shaped joint.

Applying the technical solution of this embodiment, the ball-and-socket joint filling bone block is set as a split structure including a filling structure 10 and a socket-shaped structure 20, wherein the filling structure 10 is used to fill in the bone to realize connection with the bone, and the socket-shaped structure 20 The articular surface 21 of the structure 20 is used to match the club-shaped joint. Since the socket-shaped structure 20 is replaceably connected with the filling structure 10, the shape-adapted socket-shaped structure 20 can be selected according to the specific bone defect of the patient, thereby realizing Accurate filling and can restore good joint surface effect. Therefore, the technical solution of this embodiment can improve the matching effect of the club-and-piston joint filler bone and the applicability of the club-and-socket joint filler bone. During manufacture, one filling structure 10 or multiple filling structures 10 of the same shape and multiple socket structures 20 of different shapes can be set in a set of ball and socket joint filling bone blocks. In this way, an appropriate socket structure 20 can be selected to be connected with the filling structure 10 according to needs during use.

In this embodiment, the socket-shaped structure 20 includes a plurality of bone sub-blocks 22 , and each of the bone sub-blocks 22 can be selectively connected with the filling structure 10 . In this way, an appropriate number of sub-bone blocks 22 can be selected for matching according to the specific bone defect of the patient, so as to achieve accurate filling and restore a good articular surface effect. The application range, versatility and flexibility of the ball-and-socket joint filling bone blocks can be further improved through the above settings. In Fig. 2, socket type structure 20 is made up of four sub-bone blocks 22, and each sub-bone block 22 all has two planes and an arc surface, and wherein, the plane of sub-bone block 22 is used for other sub-bone blocks 22 plane fit.

In this embodiment, the bone sub-block 22 has a contact surface 23 , and the contact surfaces 23 of a plurality of bone sub-blocks 22 form an articular surface 21 . In this way, the contact surface 23 of the bone sub-block 22 can be in contact with the club-and-socket joint to ensure a good articular surface effect. In this embodiment, the periphery of the articular surface 21 may be in the shape of a circle, an ellipse, or the like.

In this embodiment, the filling bone block for the ball-and-socket joint further includes: a first locking part 30 for detachably connecting the socket structure 20 and the filling structure 10 . The reliable connection between the socket structure 20 and the filling structure 10 can be realized through the first locking portion 30 . When in use, first select a suitable socket-shaped structure 20 or select a suitable number of bone blocks 22 in the socket-shaped structure 20 , and then fix the socket-shaped structure 20 on the filling structure 10 through the first locking part 30 .

As shown in FIG. 3 , the first locking part 30 includes: a first locking bar, which passes through the socket structure 20, and is detachably connected to the filling structure 10; a locking cap, which is arranged at one end of the first locking bar. , the socket structure 20 is located between the lock cap and the filling structure 10 , and the lock cap is used to compress the socket structure 20 . In this way, the reliable connection between the socket structure 20 and the filling structure 10 can be realized through the cooperation of the first locking rod and the locking cap.

In this embodiment, the first locking rod has an external thread, the filling structure 10 has an internal thread matched with the external thread, the articular surface 21 has a first groove, and the lock cap is located in the first groove. In this way, the connection between the first locking rod and the filling structure 10 can be realized through screw fit, which is convenient to operate and reliable to connect. Interference between the lock cap and the club joint can be avoided by providing the first groove.

In this embodiment, there are multiple first locking portions 30 , and the multiple first locking portions 30 are provided in one-to-one correspondence with the multiple bone blocks 22 . This facilitates connecting the required bone sub-blocks 22 to the filling structure 10 .

In this embodiment, the socket-shaped structure 20 is arranged on the filling structure 10 in an angle-adjustable manner. In this way, the relative angle between the socket structure 20 and the filling structure 10 can be adjusted according to the specific bone defect of the patient, thereby further improving the accuracy of filling and restoring a good articular surface effect. Through the above arrangement, the versatility of filling bone blocks in the club-and-socket joint can be improved, and the manufacturing cost can be reduced.

Specifically, the filling structure 10 has a first connecting surface, and the socket-shaped structure 20 has a second connecting surface, the second connecting surface and the articular surface are respectively located on both sides of the socket-shaped structure 20, and the second connecting surface abuts against the first connecting surface. , the second connecting surface can rotate relative to the first connecting surface. In this way, the relative angle between the socket structure 20 and the filling structure 10 can be adjusted by rotating the second connection surface relative to the first connection surface. In this embodiment, the first connecting surface can be set as a spherical surface or a conical surface, and correspondingly, the second connecting surface can also be set as a spherical surface or a conical surface.

In this embodiment, the filling bone block for the ball-and-socket joint further includes: a second locking portion, which is used to limit the rotational position of the socket-shaped structure 20 on the filling structure 10 . The reliability of the connection between the socket structure 20 and the filling structure 10 can be improved by providing the second locking part, so as to avoid the relative position changes between the two during use.

Applying the technical solution of the present invention, the ball-and-socket joint filling bone block is set as a split structure including a filling structure 10 and a socket-shaped structure 20, wherein the filling structure 10 is used to fill in the bone to realize connection with the bone, and the socket-shaped structure The articular surface 21 of 20 is used to match the club-shaped joint. Since the socket-shaped structure 20 is replaceably connected with the filling structure 10, the shape-adapted socket-shaped structure 20 can be selected according to the specific bone defect of the patient, so that accurate Filling and able to restore good articular surface effect. Therefore, the technical solution of the present invention can improve the matching effect of the club-joint filler bone block and the club-shaped joint and the applicability of the ball-and-socket joint filler bone block. The technical solution is an adjustable filling bone block. The socket-shaped structure 20 can be accurately filled according to the defect form of the patient. By selecting a suitable socket-shaped structure 20 and connecting with the filling structure 10, the physiological structure of the articular surface can be perfectly restored to achieve good results. The purpose of fixing the socket prosthesis.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and/or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and/or combinations thereof.

The relative arrangements of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. At the same time, it should be understood that, for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the Authorized Specification. In all examples shown and discussed herein, any specific values should be construed as illustrative only, and not as limiting. Therefore, other examples of the exemplary embodiment may have different values. It should be noted that like numbers and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further discussion in subsequent figures.

In the description of the present invention, it should be understood that orientation words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" etc. indicate the orientation Or positional relationship is generally based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description. In the absence of a contrary statement, these orientation words do not indicate or imply the device or element referred to. It must have a specific orientation or be constructed and operated in a specific orientation, so it should not be construed as limiting the protection scope of the present invention; the orientation words "inner and outer" refer to the inner and outer relative to the outline of each component itself.

For the convenience of description, spatially relative terms may be used here, such as "on ...", "over ...", "on the surface of ...", "above", etc., to describe The spatial positional relationship between one device or feature shown and other devices or features. 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 the device in the figures is turned over, devices described as "above" or "above" other devices or configurations would then be oriented "beneath" or "above" the other devices or configurations. under other devices or configurations". Thus, the exemplary term "above" can encompass both an orientation of "above" and "beneath". The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptions used herein interpreted accordingly.

In addition, it should be noted that the use of words such as "first" and "second" to define components is only for the convenience of distinguishing corresponding components. To limit the protection scope of the present invention.

Claims (7)

1. A pestle and socket joint filling bone block comprising:

-a filling structure (10) for filling in bone;

-a socket-type structure (20) interchangeably connected to the filling structure (10), the socket-type structure (20) having a concave articular surface (21), the articular surface (21) being intended to mate with a pestle-type joint;

the mortar-type structure (20) comprises a plurality of bone segments (22), each bone segment (22) being selectively connectable with the filling structure (10);

the bone segments (22) are provided with contact surfaces (23), and the joint surfaces (21) are formed by the contact surfaces (23) of a plurality of the bone segments (22);

the first locking part (30) is used for detachably connecting the mortar structure (20) and the filling structure (10).

2. The acetabular joint filled bone block of claim 1, wherein the first locking portion (30) comprises:

the first lock rod penetrates through the mortar structure (20) and is detachably connected with the filling structure (10);

the lock cap is arranged at one end of the first lock rod, the mortar structure (20) is positioned between the lock cap and the filling structure (10), and the lock cap is used for pressing the mortar structure (20).

3. The acetabular joint filling bone block of claim 2, wherein the first locking bar has external threads, the filling structure (10) has internal threads that mate with the external threads, the articular surface (21) has a first groove thereon, and the locking cap is positioned within the first groove.

4. The acetabular joint filling bone block of claim 1, wherein the first locking portions (30) are a plurality of, the plurality of first locking portions (30) being disposed in one-to-one correspondence with the plurality of split bone blocks (22).

5. The acetabular joint filled bone block of claim 1, wherein the acetabular structure (20) is angularly adjustable disposed on the filling structure (10).

6. The bone block as recited in claim 5, wherein the filling structure (10) has a first connection surface, the socket structure (20) has a second connection surface, the second connection surface and the joint surface are located on two sides of the socket structure (20), respectively, the second connection surface is in contact with the first connection surface, and the second connection surface is rotatable relative to the first connection surface.

7. The acetabular joint filled bone block of claim 6, further comprising:

and the second locking part is used for limiting the rotation position of the mortar-type structure (20) on the filling structure (10).