CN111437076A - A multi-piece combined artificial joint cup structure - Google Patents

Abstract

The invention discloses a multi-piece combined artificial joint acetabular cup structure, comprising: a limiting concave ring, the upper surface of the limiting concave ring is provided with an annular groove; The bottom end of the outer wall is inserted into the inner cavity of the annular groove on the upper surface of the limiting concave ring; through holes, two of the through holes are opened on the outer wall of the cup main body. In the multi-piece combined artificial joint cup structure, the main body of the cup can have good lubrication and wear resistance through the lubricating and wear-resistant layer, and the main body of the cup can have a certain antibacterial and anti-corrosion effect through the anti-bacterial anti-corrosion layer, so that not only artificial The joint cup has a good lubricating and wear-resistant effect, and has a certain antibacterial and anti-corrosion effect, which avoids premature failure of the artificial joint cup, delays the service life of the artificial joint cup, ensures the normal use of patients, and meets the needs of patients. , which is conducive to widespread promotion.

Description

A multi-piece combined artificial joint cup structure

technical field

The invention relates to the technical field of artificial joints, in particular to a multi-piece combined artificial joint cup structure.

Background technique

Generally, in the related fields of artificial joints, the patents on the structure of the artificial joint cup mostly focus on the improvement of the wear between the artificial joint cup and the artificial joint ball and related problems.

However, in the existing artificial joint cup structure, the structure is simple, the function is single, the lubrication and wear resistance effect is poor, and the long-term wear and use may easily lead to premature failure of the artificial joint cup and reduce the service life of the artificial joint cup. It affects the normal use of patients, cannot meet the needs of patients, and is not conducive to widespread promotion. Therefore, a multi-piece combined artificial joint cup structure is proposed.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a multi-piece combined artificial joint cup structure to solve the problem of poor lubrication and wear resistance in the prior art.

In order to achieve the above object, the present invention provides the following technical solutions: a multi-piece combined artificial joint cup structure, comprising:

a limit concave ring, an annular groove is formed on the circumference of the upper surface of the limit concave ring;

A cup main body, the bottom ends of the outer walls of the three cup main bodies are inserted into the inner cavity of the annular groove on the upper surface of the limiting concave ring;

Through holes, two of the through holes are opened on the outer wall of the cup main body.

Preferably, the cup bodies are arranged in an arc fan shape, three of the cup bodies form a hemisphere, and there is a slight gap between every two adjacent cup bodies.

Preferably, the main body of the cup includes: an inner cup, the inner cup is located in the middle of the main body of the cup; a lubricating and wear-resistant layer, the two lubricating and wear-resistant layers are respectively compounded on the inner and outer side walls of the inner cup; antibacterial The anti-corrosion layer is compounded on the outer side wall of the lubricating and wear-resistant layer.

Preferably, the inner cup is made of titanium alloy material.

Preferably, the lubricating and wear-resistant layer comprises: a carbon fiber reinforced polyetheretherketone layer, two carbon fiber reinforced polyetheretherketone layers are compounded on the inner and outer side walls of the inner cup; a polyvinyl alcohol hydrogel layer, the polyetheretherketone layer The vinyl alcohol hydrogel layer is compounded on the outer side wall of the carbon fiber reinforced polyether ether ketone layer.

Preferably, the antibacterial and anti-corrosion layer comprises: a modified polymethyl methacrylate layer, the modified polymethyl methacrylate layer is compounded on the outer sidewall surface of the lubricating and wear-resistant layer; an alumina ceramic layer, the alumina The ceramic layer is compounded on the outer sidewall of the modified polymethyl methacrylate layer.

The multi-piece combined artificial joint acetabular cup structure proposed by the invention has the beneficial effects that the position of the acetabular cup body can be limited by the limiting concave ring, so as to ensure more stability between the three acetabular cup bodies, and the through holes can facilitate the The screw passes through its inner cavity to fix the cup body on the patient's cavity. The cup body can have good lubrication and wear resistance through the lubricating and wear-resistant layer. The anti-corrosion effect can not only make the artificial joint cup have a good lubricating and wear-resistant effect, but also have a certain antibacterial and anti-corrosion effect, avoid premature failure of the artificial joint cup, delay the service life of the artificial joint cup, and ensure the patient's safety. Normal use, to meet the needs of patients, is conducive to widespread promotion.

Description of drawings

Fig. 1 is the top view structure schematic diagram of the present invention;

Fig. 2 is a top view partial cross-sectional structural schematic diagram of the limiting concave ring in Fig. 1 of the present invention;

Fig. 3 is the top view partial cross-sectional structural schematic diagram of the cup main body in Fig. 2 of the present invention;

Fig. 4 is the top view partial cross-sectional structural schematic diagram of the lubricating and wear-resistant layer in Fig. 3 of the present invention;

FIG. 5 is a schematic partial cross-sectional structural schematic view of the antibacterial and anti-corrosion layer shown in FIG. 3 in a top view of the present invention.

In the picture: 1. Limiting concave ring, 2. Main body of mortar cup, 3. Inner cup, 4. Lubrication and wear-resistant layer, 41. Carbon fiber reinforced polyetheretherketone layer, 42. Polyvinyl alcohol hydrogel layer, 5. Antibacterial and anti-corrosion layer, 51, modified polymethyl methacrylate layer, 52, alumina ceramic layer, 6, through hole.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

1-5, the present invention provides a technical solution: a multi-piece combined artificial joint cup structure, comprising: a limiting concave ring 1, a cup main body 2 and a through hole 6, the limiting concave ring The circumference of the upper surface of 1 is provided with an annular groove; the bottom ends of the outer walls of the three cup bodies 2 are inserted into the inner cavity of the annular groove on the upper surface of the limiting concave ring 1, and the acetabulum can be aligned by the limiting concave ring 1. The cup body 2 is limited to ensure more stability between the three cup bodies 2. The cup bodies 2 are arranged in an arc fan shape, and the three cup bodies 2 form a hemisphere, and every two cup bodies 2 are adjacent to each other. There is a slight gap between the cup main bodies 2; the cup main body 2 includes: an inner cup 3, a lubricating and wear-resistant layer 4 and an antibacterial and anti-corrosion layer 5, and the inner cup 3 is located in the middle of the cup main body 2, so The inner cup 3 is made of titanium alloy material; the two lubricating and wear-resistant layers 4 are respectively compounded on the inner and outer side walls of the inner cup 3; the lubricating and wear-resistant layers 4 include: a carbon fiber reinforced polyetheretherketone layer 41 and a poly The vinyl alcohol hydrogel layer 42 and the two carbon fiber reinforced polyetheretherketone layers 41 are compounded on the inner and outer side walls of the inner cup 3. The carbon fiber reinforced polyetheretherketone layer 41 can make the cup body 2 have good mechanical properties. performance, corrosion resistance and wear resistance; the polyvinyl alcohol hydrogel layer 42 is compounded on the outer side wall surface of the carbon fiber reinforced polyether ether ketone layer 41, and the polyvinyl alcohol hydrogel layer 42 can make the cup body 2 have Good lubricity and good biocompatibility; the antibacterial and anti-corrosion layer 5 is compounded on the outer side wall of the lubricating and wear-resistant layer 4; the antibacterial anti-corrosion layer 5 includes: a modified polymethyl methacrylate layer 51 and The alumina ceramic layer 52, the modified polymethyl methacrylate layer 51 is compounded on the outer side wall surface of the lubricating and wear-resistant layer 4, and by modifying the polymethyl methacrylate layer 51, the cup body 2 can have a good quality. Antibacterial effect, strong flexibility; the alumina ceramic layer 52 is compounded on the outer side wall surface of the modified polymethyl methacrylate layer 51, and the corrosion resistance effect of the cup body 2 can be improved through the alumina ceramic layer 52; two The through hole 6 is opened on the outer wall of the acetabular cup main body 2, and the through hole 6 can facilitate the screw to pass through the inner cavity of the acetabular cup main body 2 to fix the acetabular cup main body 2 on the patient's acetabular cavity.

The detailed connection means are known in the art. The following mainly introduces the working principle and process, and the specific work is as follows.

When in use, the bone cement is filled in the gaps between the main cup bodies 2 for connection, and then filled between the cup main body 2 and the limiting concave ring 1. Under the action of the limiting concave ring 1, the three The two cup bodies 2 are more stable. Through the through holes 6, it is convenient to pass the screw from its inner cavity through the cup body 2 and fix it on the patient's acetabular cavity. Under the action of the alumina ceramic layer 52, the cup can be raised. The anti-corrosion effect of the main body 2, under the action of the modified polymethyl methacrylate layer 51, can make the cup main body 2 have a good antibacterial effect, strong flexibility, under the action of the polyvinyl alcohol hydrogel layer 42 , the cup body 2 can have good lubricity and good biocompatibility. Under the action of the carbon fiber reinforced polyetheretherketone layer 41, the cup body 2 can have good mechanical properties, corrosion resistance and good biocompatibility. Wear-resisting effect, the device has a compact structure and a reasonable design, which not only enables the artificial joint cup to have a good lubricating and wear-resisting effect, but also has a certain antibacterial and anti-corrosion effect to meet the needs of patients.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (6)

1. The utility model provides a multi-disc combination formula artificial joint mortar cup structure which characterized in that: the method comprises the following steps:

the upper surface circumference of the limiting concave ring (1) is provided with an annular groove;

the mortar cup comprises mortar cup bodies (2), wherein the bottom ends of the outer walls of the three mortar cup bodies (2) are inserted into the inner cavity of an annular groove on the upper surface of a limiting concave ring (1);

the through holes (6) are formed in the outer wall of the mortar cup body (2).

2. The multi-piece combination type artificial joint cup structure according to claim 1, wherein: the mortar cup main bodies (2) are arranged in a cambered sector shape, the mortar cup main bodies (2) form a hemisphere shape, and a slight gap exists between every two adjacent mortar cup main bodies (2).

3. The multi-piece combination type artificial joint cup structure according to claim 1, wherein: the cup body (2) comprises:

the inner cup (3) is positioned in the middle of the mortar cup body (2);

the two lubricating wear-resistant layers (4) are respectively compounded on the inner side wall surface and the outer side wall surface of the inner cup (3);

the anti-bacterial anti-corrosion layer (5) is compounded on the outer side wall surface of the lubricating wear-resistant layer (4).

4. The multi-piece combination type artificial joint cup structure according to claim 3, wherein: the inner cup (3) is made of a titanium alloy material.

5. The multi-piece combination type artificial joint cup structure according to claim 3, wherein: the lubricating and wear-resistant layer (4) comprises:

the carbon fiber reinforced polyether-ether-ketone layer (41), the two carbon fiber reinforced polyether-ether-ketone layers (41) are compounded on the inner side wall surface and the outer side wall surface of the inner cup (3);

and the polyvinyl alcohol hydrogel layer (42) is compounded on the outer side wall surface of the carbon fiber reinforced polyether-ether-ketone layer (41).

6. The multi-piece combination type artificial joint cup structure according to claim 3, wherein: the antibacterial and anticorrosive layer (5) comprises:

the modified polymethyl methacrylate layer (51), the modified polymethyl methacrylate layer (51) is compounded on the outer side wall surface of the lubricating wear-resistant layer (4);

and an alumina ceramic layer (52), wherein the alumina ceramic layer (52) is compounded on the outer side wall surface of the modified polymethyl methacrylate layer (51).

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