CN208710174U - Acetabular component - Google Patents

Abstract

The utility model provides a kind of acetabular component, comprising: bulb；Liner, interior lining are provided with the recessed receiving portion with bulb shape adaptation, and bulb is rotatably arranged in recessed receiving portion, and the first groove is provided on the inner surface of recessed receiving portion.The technical solution of the utility model effectively solves occur to touch firmly and the problem of dry friction in the prior art between bulb and liner.

Description

Acetabular component

Technical field

The utility model relates to artificial prosthesis fields, in particular to a kind of acetabular component.

Background technique

Acetabular component mainly has cement mo(u)ld, bion and ambipolar prosthese, most of these prostheses all to pass through at present Outer cup, liner, bulb and femoral stem are used cooperatively.The lock of acetabular outer cup and liner is also mainly paid attention in the design of acetabular component Match and fixation problem on, design has the structures such as the conical surface and anti-spin slot to solve acetabular outer cup and liner or bone on acetabular outer cup Connectivity problem between bone.

But be easy to happen between the bulb and liner of current acetabular component and touch and dry friction firmly, on the one hand aggravate ball On the other hand the abrasion of head and inner lining surface, the service life for influencing acetabular component can also issue different when patient makes movement It rings, influences the normal life of patient.

Utility model content

The utility model is intended to provide a kind of acetabular component, to solve to occur between bulb and liner in the prior art to touch firmly And the problem of dry friction.

To achieve the goals above, the utility model provides a kind of acetabular component, comprising: bulb；Liner, interior lining are set Be equipped with the recessed receiving portion with bulb shape adaptation, bulb is rotatably arranged in recessed receiving portion, recessed receiving portion it is interior The first groove is provided on surface.

Further, the second groove is provided on the outer surface of bulb.

Further, the first groove and the second groove are multiple, and the distance between two neighboring first groove L1 meets: 100 μm≤L1≤200 μm, the distance between two neighboring second groove L2 meets: 100 μm≤L2≤200 μm.

Further, on the radial inner surface for being arranged in recessed receiving portion of multiple first grooves, multiple second grooves It is radial to be arranged on the outer surface of bulb.

Further, the width D 1 of the first groove meets: 50 μm≤D1≤200 μm, the width D 2 of the second groove meets: 50 μm≤D2≤200μm。

Further, the depth H 1 of the first groove meets: 30 μm≤H1≤100 μm, the depth H 2 of the second groove meets: 30 μm≤H2≤100μm。

Further, the first groove and/or the second groove are strip.

Further, the first groove is formed in by laser femtosecond processing technology or electric spark-ultrasonic compound process technology Interior lining, the second groove are formed on bulb by laser femtosecond processing technology or electric spark-ultrasonic compound process technology.

Further, the material of bulb is metal or ceramics, and the material of liner is metal or ceramics.

Further, acetabular component further includes the outer cup and femoral stem being arranged in subjects bones, and liner is arranged in outer cup In, one end of femoral stem is arranged in bulb.

Using the technical solution of the utility model, body fluid can be accommodated and stored in the first groove, when bulb is in liner Body fluid can be attached to bulb surface, and then the inner surface in bulb outer surface and recessed receiving portion when rotating in recessed receiving portion Between form liquid film, lubricating action is played to the friction of bulb and liner.The abrasion for reducing bulb and liner, extends acetabular bone The service life of prosthese, the case where improving current acetabular component dry friction, while solving dry friction between bulb and liner When there is the problem of abnormal sound.

Detailed description of the invention

The accompanying drawings constituting a part of this application is used to provide a further understanding of the present invention, this is practical Novel illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model. In the accompanying drawings:

Fig. 1 shows the perspective structure schematic diagram of the embodiment of acetabular component according to the present utility model；

Fig. 2 shows the structural schematic diagrams of the liner of the acetabular component of Fig. 1；

Fig. 3 shows the present invention looks up structural representation of the liner of two Fig. 2；

Fig. 4 shows the A-A of the liner of Fig. 3 to schematic cross-sectional view；

Fig. 5 shows partial enlargement diagram at the B of the liner of Fig. 4；

Fig. 6 shows the structural schematic diagram of the bulb of the acetabular component of Fig. 1；

Fig. 7 shows the positive structure diagram of the bulb of Fig. 6；

Fig. 8 shows partial enlargement diagram at the C of the bulb of Fig. 7；And

Fig. 9 a to 9d shows the structural schematic diagram of first four kinds of embodiments of groove of the utility model.

Wherein, the above drawings include the following reference numerals:

10, bulb；11, the second groove；20, liner；21, the first groove.

Specific embodiment

Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.Below Description only actually at least one exemplary embodiment be it is illustrative, never as to the application and its application or making Any restrictions.Based on the embodiment in the application, those of ordinary skill in the art are not making creative work premise Under every other embodiment obtained, shall fall in the protection scope of this application.

It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.

Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments Up to the unlimited scope of the present application processed of formula and numerical value.Simultaneously, it should be appreciated that for ease of description, each portion shown in attached drawing The size divided not is to draw according to actual proportionate relationship.For technology, side known to person of ordinary skill in the relevant Method and equipment may be not discussed in detail, but in the appropriate case, and the technology, method and apparatus should be considered as authorizing explanation A part of book.In shown here and discussion all examples, any occurrence should be construed as merely illustratively, and Not by way of limitation.Therefore, the other examples of exemplary embodiment can have different values.It should also be noted that similar label Similar terms are indicated in following attached drawing with letter, therefore, once it is defined in a certain Xiang Yi attached drawing, then subsequent attached It does not need that it is further discussed in figure.

As shown in Figures 1 to 5, the acetabular component of the present embodiment includes bulb 10 and liner 20.Wherein, it is arranged on liner 20 There is the recessed receiving portion with 10 shape adaptation of bulb, bulb 10 is rotatably arranged in recessed receiving portion, recessed receiving portion The first groove 21 is provided on inner surface.

Using the technical solution of the present embodiment, body fluid can be accommodated and store in the first groove 21, when bulb 10 is in liner Body fluid can be attached to bulb surface when rotating in 20 recessed receiving portion, and then in 10 outer surface of bulb and recessed receiving portion Liquid film is formed between inner surface, and lubricating action is played to the friction of bulb 10 and liner 20.Reduce bulb 10 and liner 20 Abrasion, the case where extending the service life of acetabular component, improve current acetabular component dry friction, while solving bulb 10 There is the problem of abnormal sound when dry friction between liner 20.

Further, as shown in Figure 6 to 8, the second groove 11 is provided on the outer surface of the bulb 10 of the present embodiment.The Body fluid can be also stored in two grooves 11, when bulb 10 rotates in recessed receiving portion, the first groove 21 and the second groove 11 Body fluid can be mutually coated in the surface of bulb 10 and liner 20, keep liquid film more evenly complete.

Preferably, as shown in Figures 1 to 8, first groove 21 of the present embodiment and the second groove 11 are multiple, Duo Ge One groove 21 and the second groove 11 are distributed in the surface of recessed receiving portion and the surface of bulb 10.When bulb 10 rotates, liner Each first groove 21 on 20 can form footprint on bulb 10, and multiple footprints overlapping of multiple first grooves 21 is covered Friction surface between lid or splicing covering bulb 10 and liner 20.Similarly, each second groove 11 on bulb 10 also can be Footprint is formed on liner 20, multiple footprints can cover friction surface, so that liquid film can be completely evenly coated with Between bulb 10 and liner 20, above-mentioned lubricant effect is improved.

For easy to process and expression, as shown in Figures 2 to 4, the radial arrangement of multiple first grooves 21 of the present embodiment On the inner surface of recessed receiving portion, on multiple radial outer surfaces for being arranged in bulb 10 of second groove 11.Radial point The groove (the first groove 21 and the second groove 11) of cloth can store more in the position that bulb 10 and 20 stress of liner are more concentrated Body fluid supplements lubricating liquid film more in time.Radial central point is located at 10 center line of bulb in bulb in the present embodiment On the intersection point on 10 surfaces and the center line of liner 20 is on the intersection point on recessed receiving portion surface, in other figs. unshowned reality It applies in example, the central point of groove can adaptively be adjusted according to the actual distribution of force of acetabular component.

And as shown in Figures 2 to 4, the recessed receiving portion of the present embodiment is hemispherical, and multiple first grooves 21 are in hemisphere Multiple concentric circles are formed on face, the spacing between two neighboring concentric circles differs.Specifically, between the concentric circles of pericenter Away from smaller, the spacing of the concentric circles far from central point is larger, increases the flute density near stress centrostigma from another point of view.Together Reason, the arrangement of the second groove 11 is identical as the first groove 21, repeats no more.

When acetabular component is implanted into human body or other receptor bodies, liner 20 is relatively stationary part, and bulb 10 is phase To the part of movement.As shown in Figure 1 and Figure 7, second groove of part 11 of the present embodiment can enter or move when bulb 10 rotates Recessed receiving portion out, this second groove of part 11 can be from the receptor tissue around acetabular component when removing recessed receiving portion Body fluid is stored, and body fluid is transmitted and is stored in the first groove 21 when entering recessed receiving portion, to avoid bulb 10 and interior Body fluid between lining 20, which is extruded, completely leads to the case where dry friction is formed between bulb 10 and liner 20.

Preferably, in order to guarantee above-mentioned lubricant effect while guarantee the basic function of acetabular component, in the present embodiment, such as Shown in Fig. 5 and Fig. 8, the distance between two neighboring first groove 21 L1 meets: 100 μm≤L1≤200 μm, two neighboring second The distance between groove 11 L2 meets: 100 μm≤L2≤200 μm.When distance is too long between groove, it is likely to occur between groove The region not covered causes body fluid that cannot fill in time, and then causes to wear between bulb 10 and liner 20.When groove it Between distance it is too short when, groove will lead to recessed receiving portion roughness and increase, and leads to serious wear, on the other hand will lead to recessed appearance Receive portion holding power it is insufficient.

Further, as shown in Figure 5 and Figure 8, in the present embodiment, the width D 1 of the first groove 21 meets: 50 μm≤D1 ≤ 200 μm, the width D 2 of the second groove 11 meets: 50 μm≤D2≤200 μm.The depth H 1 of first groove 21 meets: 30 μm≤ The depth H 2 of H1≤100 μm, the second groove 11 meets: 30 μm≤H2≤100 μm.It is further preferred that the width of the first groove 21 The width D 2 that D1 is greater than the second groove 11 is spent, the depth H 1 of the first groove 21 is greater than the depth H 2 of the second groove 11, so that first More body fluid can be accommodated in groove 21, be further ensured that groove can in time supplement liquid film.

Optionally, as shown in Fig. 9 a to Fig. 9 d, the shape of the first groove can be in spherical pit, diamond shape pit, fish scale-shaped Pit or long striped groove etc..Similarly, the concrete shape of the second groove can be identical as the first groove, can also be with first Groove is different.When the shape of groove (the first groove and the second groove) is round, above-mentioned width D (D1 and D2) is the straight of circle Diameter.Specifically, the groove of the present embodiment is spherical pit, has the advantages that stable structure, easy to process.When groove is strip When groove, above-mentioned width D is the width direction of elongated slot, and extending direction is length direction, can accelerate body fluid in a groove Flowing makes the presence of lubrication body fluid between bulb 10 and liner 20 always, improves above-mentioned lubricant effect.

Preferably, the material of the bulb 10 of the present embodiment is metal or ceramics, and the material of liner 20 is metal or ceramics.Gold Category is chosen as the metal strong with receptor affinity such as titanium or cobalt chrome-nickel.

Further, first groove 21 of the present embodiment is added by laser femtosecond processing technology or electric spark-ULTRASONIC COMPLEX Work technology is formed on liner 20, and the second groove 11 passes through laser femtosecond processing technology or electric spark-ultrasonic compound process technology It is formed on bulb 10.Laser femtosecond processing technology and electric spark-ultrasonic compound process technology can be processed accurately and quickly Metal or ceramic material are stated, is conducive to improve production efficiency.

Further, the acetabular component of the present embodiment further includes the outer cup and femoral stem being arranged in subjects bones, liner It is arranged in outer cup, one end of femoral stem is arranged in bulb.Outer cup is arranged in the hipbone of receptor, the femur of femoral stem and receptor It is connected.

It can be seen from the above description that the above embodiments of the utility model achieve the following technical effects:

Body fluid can be accommodated and stored in first groove, and when bulb rotates in the recessed receiving portion of liner, body fluid can It is attached to bulb surface, and then forms liquid film between bulb outer surface and the inner surface of recessed receiving portion, to bulb and liner Friction play lubricating action.The abrasion for reducing bulb and liner extends the service life of acetabular component, improves at present The case where acetabular component dry friction, while solving the problems, such as abnormal sound occur when dry friction between bulb and liner.

In the description of the present application, it is to be understood that the noun of locality such as " front, rear, top, and bottom, left and right ", " laterally, vertical, Vertically, orientation or positional relationship indicated by level " and " top, bottom " etc. is normally based on orientation or position shown in the drawings and closes System is merely for convenience of description the application and simplifies description, and in the absence of explanation to the contrary, these nouns of locality do not indicate that It must have a particular orientation or be constructed and operated in a specific orientation with the device or element for implying signified, therefore cannot manage Solution is the limitation to the application protection scope；The noun of locality " inside and outside " refers to inside and outside the profile relative to each component itself.

For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ", " ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction " Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and " in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and And respective explanations are made to the opposite description in space used herein above.

In addition, it should be noted that, limiting components using the words such as " first ", " second ", it is only for be convenient for Corresponding components are distinguished, do not have Stated otherwise such as, there is no particular meanings for above-mentioned word, therefore should not be understood as to this Apply for the limitation of protection scope.

The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.

Claims (10)

1. a kind of acetabular component characterized by comprising

Bulb (10)；

Liner (20) is provided with the recessed receiving portion with the bulb (10) shape adaptation, the bulb on the liner (20) (10) it is rotatably arranged in the female receiving portion, the first groove is provided on the inner surface of the female receiving portion (21)。

2. acetabular component according to claim 1, which is characterized in that be provided with second on the outer surface of the bulb (10) Groove (11).

3. acetabular component according to claim 2, which is characterized in that first groove (21) and second groove (11) it is multiple, the distance between two neighboring described first groove (21) L1 satisfaction: 100 μm≤L1≤200 μm, adjacent two The distance between a second groove (11) L2 meets: 100 μm≤L2≤200 μm.

4. acetabular component according to claim 3, which is characterized in that the radial arrangement of multiple first grooves (21) On the inner surface of the female receiving portion, multiple second grooves (11) are radial to be arranged in the outer of the bulb (10) On surface.

5. acetabular component according to claim 2, which is characterized in that the width D 1 of first groove (21) meets: 50 μ The width D 2 of m≤D1≤200 μm, second groove (11) meets: 50 μm≤D2≤200 μm.

6. acetabular component according to claim 2, which is characterized in that the depth H 1 of first groove (21) meets: 30 μ The depth H 2 of m≤H1≤100 μm, second groove (11) meets: 30 μm≤H2≤100 μm.

7. acetabular component according to claim 2, which is characterized in that first groove (21) and/or described second recessed Slot (11) is strip.

8. acetabular component according to claim 2, which is characterized in that first groove (21) is processed by laser femtosecond Technology or electric spark-ultrasonic compound process technology are formed on the liner (20), and second groove (11) is flown by laser Second processing technology or electric spark-ultrasonic compound process technology are formed on the bulb (10).

9. acetabular component according to claim 1, which is characterized in that the material of the bulb (10) be metal or ceramics, The material of the liner (20) is metal or ceramics.

10. acetabular component according to claim 1, which is characterized in that the acetabular component further includes being arranged in patient bone Outer cup and femoral stem in bone, the liner (20) are arranged in the outer cup, and the bulb (10) is arranged in the femoral stem One end.