CN209464133U - Full acetabular component - Google Patents
Full acetabular component Download PDFInfo
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- CN209464133U CN209464133U CN201821529433.6U CN201821529433U CN209464133U CN 209464133 U CN209464133 U CN 209464133U CN 201821529433 U CN201821529433 U CN 201821529433U CN 209464133 U CN209464133 U CN 209464133U
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- inner lining
- metal inner
- acetabular component
- metal
- liner
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Abstract
The utility model relates to medical instruments fields, disclose a kind of full acetabular component.The full acetabular component includes liner, and liner includes hemispherical metal inner lining and the polyethylene liner that is set in metal inner lining.Wherein, at least one annular groove is offered on the outer peripheral surface of metal inner lining.The full acetabular component operation installation of the utility model is more convenient and is implanted into more stable, can effectively avoid the secondary revision procedure being implanted into full acetabular component.
Description
Technical field
The utility model relates to medical instruments fields, and in particular to a kind of full acetabular component.
Background technique
Full acetabular component is the surgical implant for replacing human hip acetabular bone part.It and femoral stem, bulb group
It closes and performs the operation using for hip joint whole coxa substitution.The structure of existing full acetabular component is to pass through taper by metal outer cup and liner
Connection is composed, and has many advantages, such as that easy to process, the development cycle is short.
However, existing full acetabular component is in actual use, there is also shortcomings in structure.For example, existing
Full acetabular component installs more difficulty in the course of surgery, and specifically, the metal outer cup and liner of existing full acetabular component are logical
It is often attached by tapered configuration, needs to apply biggish dynamics and liner could be squeezed into place in operation installation process, this
It is just easy to loosen the metal outer cup being installed in place originally because stress is excessive, so as to cause finally having to complete
Acetabular component carries out revision procedure；Further for example, existing full acetabular component in use easily dislocate by acetabular bone, abrasion loss compared with
Greatly, specifically, due in existing full acetabular component between metal outer cup and liner and not set certain anti-back structure,
In human body in long-term motion process, liner is easy to deviate from from metal outer cup, and acetabular bone is caused to dislocate, simultaneously as interior
Lining is usually made of polythene material, and hardness is smaller, and abrasion resistance properties are poor, is easy to produce that a large amount of polyethylene is broken to cause bone molten
The problems such as solution, prosthetic loosening；Further for example, existing full acetabular component fixed effect is not good enough, and specifically, existing full acetabular component
Outer surface is spherical designs, due to long-term stress in human body, acetabular bone is easily caused to move up, due to by hip during acetabular bone moves up
It is fixed can not to form secondary movement for blocking at the top of mortar, and the outer surface of acetabular component is blasting craft entirely, and surface is not thick enough
It is rough, it is unfavorable for Bone Ingrowth, the long-term loosening rate of prosthese can improve.
It can be seen that existing full acetabular component is in structure and use, however it remains certain defect and inconvenience.For
In place of the deficiencies in the prior art, it is more convenient and be implanted into more stable complete that those skilled in the art wishes to seek a kind of operation installation
Acetabular component, to avoid the secondary revision procedure being implanted into full acetabular component.
Utility model content
In order to avoid the secondary revision procedure being implanted into full acetabular component, the utility model proposes one kind in surgical procedure
Middle installation is more convenient and is implanted into more stable full acetabular component.
Full acetabular component according to the present utility model, including liner, liner include hemispherical metal inner lining and are set in
Polyethylene liner in metal inner lining, wherein at least one annular groove is offered on the outer peripheral surface of metal inner lining.
Further, the number of annular groove is multiple, and each annular groove is arranged at intervals on the outer peripheral surface of metal inner lining not
On same section circle.
Further, be also provided at least one linear grooves on the outer peripheral surface of metal inner lining, linear grooves and each annular groove it
Between be respectively formed angle.
Further, the angle formed between linear grooves and each annular groove is 90 °.
Further, the number of linear grooves is multiple, and each linear grooves are arranged at intervals on the outer peripheral surface of metal inner lining.
Further, the top of metal inner lining is formed with plane, plane be located at metal inner lining the top annular groove it
Between be formed with annular tag slot.
Further, cross recess is formed in plane.
Further, under the initial engagement state of metal inner lining and polyethylene liner, the lowermost end of metal inner lining is higher than
The numberical range of the height of the lowermost end of polyethylene liner is located at the section circle of the lowermost end of metal inner lining between 6-10mm
Diameter and positioned at polyethylene liner lowermost end section diameter of a circle ratio range between 1.1-1.5.
Further, metal inner lining is made of vitallium, and polyethylene liner is by superhigh molecular weight polyethylene material system
At.
Further, full acetabular component further includes the metal outer cup being set in outside liner, wherein the metal inner lining of liner with
Pass through cement reaction between metal outer cup.
Compared with full acetabular component in the prior art, the outer surface of the metal inner lining of the full acetabular component of the utility model
Due to being formed with annular groove and linear grooves, so that the opposite resisting pull out forces and anti-rotational force with metal outer cup of metal inner lining increase greatly
Add, to effectively improve the stability of the fixation of metal inner lining and metal outer cup.Meanwhile the full acetabular bone of the utility model is false
Body is higher than the height of the lowermost end of polyethylene liner, and the lowermost end positioned at metal inner lining by the lowermost end to metal inner lining
Section diameter of a circle and be located at the ratio of section diameter of a circle of lowermost end of polyethylene liner and be designed, can effectively increase
The freedom degree that polyethylene liner rotates in metal inner lining, so that polyethylene liner relative to metal inner lining during rotating
It is not easy, do not fall out metal inner lining completely even.In addition, the full acetabular component of the utility model passes through on the top of metal inner lining
Plane is formed, on the one hand can guarantee has press-fitting effect well, another party between the port outer rim and metal inner lining of metal outer cup
Face additionally aids the stability for further increasing that metal inner lining and metal outer cup are fixed.The full acetabular component of the utility model is performed the operation
Installation is more convenient and is implanted into more stable, can effectively be avoided in Primary replacement operation using the full acetabular component of the utility model
To the secondary revision procedure of full acetabular component implant surgery.Simultaneously as the metal inner lining of the full acetabular component of the utility model
It can be matched with existing metal outer cup, therefore secondary overhaul also is more suitable for using the full acetabular component of the utility model
In operation, can effectively save operating time, and save the production and cost of manufacture of full acetabular component, be conducive to be widely popularized
With use.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described.In all the appended drawings, similar
Element or part are generally identified by similar appended drawing reference.In attached drawing, each element or part might not be according to actual ratios
It draws.
Fig. 1 is the structural schematic diagram according to the full acetabular component of the utility model；
Fig. 2 is the main view of the structure of metal inner lining shown in FIG. 1；
Fig. 3 is the top view of the structure of metal inner lining shown in FIG. 1；
Fig. 4 is the structural schematic diagram of polyethylene liner shown in FIG. 1；
Fig. 5 is the cooperation schematic diagram of the structure of metal inner lining shown in FIG. 1 and polyethylene liner.
Specific embodiment
It is described in detail below in conjunction with embodiment of the attached drawing to technical solutions of the utility model.Following embodiment is only
For clearly illustrating the technical solution of the utility model, therefore it is only used as example, and it is originally practical to cannot be used as a limitation limitation
Novel protection scope.
Fig. 1 shows the structural schematic diagram of full acetabular component 100 according to the present utility model.As shown in Figure 1, the full acetabular bone
Prosthese 100 includes liner, and liner includes hemispherical metal inner lining 1 and the polyethylene liner 2 being set in metal inner lining 1.Its
In, at least one annular groove 11 is offered on the outer peripheral surface of metal inner lining 1.
It, can be first by metal outer cup 3 and the fixed company of human body acetabular bone when using the full acetabular component 100 of the utility model
It connects, metal inner lining 1 is then passed through into cement reaction in metal outer cup 3.Metal outer cup 3 is fixed in metal inner lining 1
In interior process, due to being provided at least one annular groove 11 on the outer peripheral surface of metal inner lining 1, so that the appearance of metal inner lining 1
Face includes the outer surface of arc and the channel profile of indent, and when being fixed using bone cement, bone cement is distributed in gold simultaneously
Belong between the inner peripheral surface of outer cup 3 and the outer surface of the arc of metal inner lining 1 and in the channel profile (i.e. annular groove 11) of indent, when
When being distributed in the bone cement solidification in each region, on the one hand bone cement has tightly cemented in the inner peripheral surface and metal of metal outer cup 3
Between the outer surface of the arc of liner 1, metal outer cup 3 and the level-one of metal inner lining 1 are fixed to realize；On the other hand tight
It has tightly cemented in the channel profile (i.e. annular groove 11) of the indent of metal inner lining 1, the bone cement in the channel profile of indent
The structure similar to " claw " is formd, which tightly blocks metal inner lining 1, so that metal inner lining 1 is not easy longitudinal direction and (schemes
Up and down direction shown in 1) abjection metal outer cup 3, metal outer cup 3 and the second level of metal inner lining 1 are fixed to realize.Upper
It states under the fixed collective effect of two-stage, the stability of the fixation of metal inner lining 1 and metal outer cup 3 is greatly improved, to make
The implantation for obtaining full acetabular component 100 is more stable, that is, efficiently avoids the secondary revision procedure being implanted into full acetabular component.
Furthermore it is noted that the metal outer cup 3 of the full acetabular component 100 in the utility model can use it is existing
Any type of metal outer cup in technology, therefore, the full acetabular component 100 of the utility model during design and producing,
Can be without considering that the structure of metal outer cup 3 is redesigned and produced, this is just saved greatly production cost, while
Be conducive to Rapid Popularization use.
In preferred embodiment as shown in Figure 2, the number of annular groove 11 can be multiple, and each annular groove 11 is spaced
It is arranged on the different section circles of the outer peripheral surface of metal inner lining 1.By the setting, the bone water in annular groove 11 can be improved
Mud is formed by " claw " structure to the clamping force of metal inner lining 1, and bone cement is fixed more in large area and clamping is golden
Belong to liner 1, to effectively improve the stability of the fixation of metal inner lining 1 and metal outer cup 3.Preferably, in order to further
The stability for improving the fixation of metal inner lining 1 and metal outer cup 3, can be arranged at equal intervals metal inner lining 1 for each annular groove 11
On the different section circles of outer peripheral surface.
Further, it in such as Fig. 2 and preferred embodiment as shown in Figure 3, is also opened up on the outer peripheral surface of metal inner lining 1
There is at least one linear grooves 12, angle α (as shown in Figure 3) is respectively formed between linear grooves 12 and each annular groove 11.By the setting,
When through cement reaction metal inner lining 1 and metal outer cup 3, bone cement has also been distributed in linear grooves 12 simultaneously, Dang Gushui
When mud solidifies, bone cement has tightly been cemented in linear grooves 12, and the bone cement in linear grooves 12, which also forms, to be similar to
The structure of " claw ", the structure tightly block metal inner lining 1, so that metal inner lining 1 is not easy to revolve relative to metal outer cup 3
Turn, to further improve the stability of the fixation of metal inner lining 1 and metal outer cup 3.
Preferably, the numberical range of the angle α formed between linear grooves 12 and each annular groove 11 is between 45 ° to 90 °.?
Under the angular range, the fixed effect between metal inner lining 1 and metal outer cup 3 is more stable.It is further preferred that linear grooves 12
The angle α formed between each annular groove 11 is 90 °.Fixed effect under the angle, between metal inner lining 1 and metal outer cup 3
Fruit is the most stable.
It is further preferred that the number of linear grooves 12 may be multiple, and each linear grooves 12 are arranged at intervals on metal inner lining
On outer peripheral surface.By the setting, the bone cement in linear grooves 12 is formed by " claw " structure and can further improve to gold
The clamping force for belonging to liner 1, to effectively prevent rotation of the metal inner lining 1 relative to metal outer cup 3, and then effectively ensures that
The stability of the fixation of metal inner lining 1 and metal outer cup 3.Preferably, in order to further increase metal inner lining 1 and metal outer cup
The stability of 3 fixation linear grooves 12 can be arranged at equal intervals on the outer peripheral surface of metal inner lining 1.
It is further preferred that in order to reduce cost of manufacture and improve the aesthetics of metal inner lining 1, it can be by annular groove 11 and line
The number of shape slot 12 is disposed as 6.
According to the utility model, in conjunction with shown in Fig. 1 to 3, the top of metal inner lining 1 is formed with plane 13, plane 13 and position
The tag slot 14 of annular is formed between the annular groove 11 of 1 the top of metal inner lining.By being formed on the top of metal inner lining 1
On the one hand plane 13 makes the top of metal inner lining 1 will not barrier metal outer cup 3, it is ensured that 3 port outer rim of metal outer cup and gold
Belonging to liner 1 has press-fitting effect well；On the other hand make the top on the top of metal inner lining 1 and the inner peripheral surface of metal outer cup 3
Between be formed with gap, which can be used for the distribution of bone cement, to make outer surface and the metal outer cup 3 of metal inner lining 1
Each region between inner surface is distributed with bone cement, in favor of improving the stability that metal inner lining 1 and metal outer cup 3 are fixed.
Meanwhile tag slot 14 is used for the type information of coding metal liner 1, since the tag slot 14 is located at around plane 13,
Type information above it can be observed more easily by operator.
Preferably, as shown in figure 3, may also be formed with cross recess 131 in plane 13.By the setting, when passing through bone water
When the fixed metal inner lining 1 of mud is with metal outer cup 3, bone cement has also been distributed in cross recess 131 simultaneously, when bone cement solidifies
When, bone cement has tightly cemented in cross recess 131, and the bone cement in cross recess 131, which also forms, to be similar to
The structure of " claw ", the structure tightly block metal inner lining 1, and metal inner lining 1 can be further prevented to send out relative to metal outer cup 3
Raw rotation, to further improve the stability of the fixation of metal inner lining 1 and metal outer cup 3.
According to the utility model, in conjunction with shown in Fig. 4 and Fig. 5, in the initial engagement shape of metal inner lining 1 and polyethylene liner 2
Under state, the lowermost end of metal inner lining 1 is higher than the numberical range of the height H of the lowermost end of polyethylene liner 2 between 6-10mm, and
Positioned at section of the section diameter of a circle R1 (as shown in Figure 2) and the lowermost end for being located at polyethylene liner 2 of the lowermost end of metal inner lining 1
The ratio range of face diameter of a circle R2 is between 1.1-1.5.By the setting, polyethylene liner 2 can be increased in metal inner lining 1
The freedom degree of rotation, so that polyethylene liner 2 is not easy metal inner lining 1 during rotating relative to metal inner lining 1.It is excellent
Selection of land, the height H that the lowermost end of metal inner lining 1 is higher than the lowermost end of polyethylene liner 2 is 7-9mm, further preferably 8mm,
And it is located at the section diameter of a circle R1 (as shown in Figure 2) of the lowermost end of metal inner lining 1 and is located at the lowermost end of polyethylene liner 2
The ratio of section diameter of a circle R2 be 1.2-1.4, further preferably 1.3.By the setting, so that polyethylene liner 2 is in phase
Metal inner lining 1 is not fallen out always during rotating for metal inner lining 1.
In addition, the metal inner lining 1 of the full acetabular component 100 of the utility model can be made of vitallium, it is wear-resisting
Property is more preferable；Polyethylene liner 2 can be made of superhigh molecular weight polyethylene material, be biocompatible materials, can reinforce vacation
Every physicochemical property of body material, while the antioxygen rate for improving prosthetic material can be conducive in conjunction with free radical, extend false
The late result of body material.
According to the utility model, full acetabular component 100 may also include the metal outer cup 3 being set in outside liner, outside the metal
Cup 3 can use existing metal outer cup as above-mentioned, can also carry out otherwise designed to the structure of metal outer cup 3.It is excellent at one
In selection of land embodiment, the annular groove and line on the outer surface similar to metal inner lining 1 may also set up on the inner peripheral surface of metal outer cup 3
Shape slot structure further increases metal inner lining 1 to further increase bone cement to the cement strength and clamping force of metal outer cup 3
Relative to the resisting pull out forces and anti-rotational force of metal outer cup 3, to further enhance consolidating for metal inner lining 1 and metal outer cup 3
Fixed stability.
Compared with full acetabular component in the prior art, outside the metal inner lining 1 of the full acetabular component 100 of the utility model
Surface is due to being formed with annular groove 11 and linear grooves 12, so that the opposite resisting pull out forces with metal outer cup 3 of metal inner lining 1 and anti-rotation
Turn power to greatly increase, to effectively improve the stability of the fixation of metal inner lining 1 and metal outer cup 3.Meanwhile this is practical new
The full acetabular component 100 of type is higher than the height H, Yi Jiwei of the lowermost end of polyethylene liner 2 by the lowermost end to metal inner lining 1
In the section diameter of a circle R2 of the section diameter of a circle R1 and the lowermost end for being located at polyethylene liner 2 of the lowermost end of metal inner lining 1
Ratio be designed, the freedom degree that polyethylene liner 2 rotates in metal inner lining 1 can be effectively increased, so that polyethylene liner 2
It is not easy during being rotated relative to metal inner lining 1, do not fall out metal inner lining 1 completely even.In addition, the utility model
On the one hand full acetabular component 100 can guarantee the port outer rim of metal outer cup 3 by forming plane 13 on the top of metal inner lining 1
There is press-fitting effect well between metal inner lining 1, on the other hand additionally aids and further increase metal inner lining 1 and metal outer cup
3 fixed stability.The operation installation of full acetabular component 100 of the utility model it is more convenient and be implanted into it is more stable, in Primary replacement
It can effectively avoid overhauling complete the secondary of acetabular component implant surgery using the full acetabular component 100 of the utility model in operation
Operation.Simultaneously as the metal inner lining 1 of the full acetabular component 100 of the utility model can be with the progress of existing metal outer cup
Match, therefore is also more suitable in secondary revision procedure using the full acetabular component 100 of the utility model, it being capable of effectively save hand
The art time, and the production and cost of manufacture of full acetabular component 100 are saved, be conducive to be widely popularized and use.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type, should all cover in the claim of the utility model and the range of specification.
Especially, as long as structural conflict is not present, items technical characteristic mentioned in the various embodiments can combine in any way
Get up.The utility model is not limited to specific embodiment disclosed herein, but including falling within the scope of the appended claims
All technical solutions.
Claims (10)
1. a kind of full acetabular component, which is characterized in that including liner, the liner includes hemispherical metal inner lining and is set in
Polyethylene liner in the metal inner lining, wherein at least one annular groove is offered on the outer peripheral surface of the metal inner lining.
2. full acetabular component according to claim 1, which is characterized in that the number of the annular groove is multiple, and each institute
On the different section circles for stating the outer peripheral surface that annular groove is arranged at intervals on the metal inner lining.
3. full acetabular component according to claim 1 or 2, which is characterized in that also opened on the outer peripheral surface of the metal inner lining
Equipped at least one linear grooves, angle is respectively formed between the linear grooves and each annular groove.
4. full acetabular component according to claim 3, which is characterized in that shape between the linear grooves and each annular groove
At angle be 90 °.
5. full acetabular component according to claim 4, which is characterized in that the number of the linear grooves is multiple, and each institute
Linear grooves are stated to be arranged at intervals on the outer peripheral surface of the metal inner lining.
6. full acetabular component according to claim 1 or 2, which is characterized in that the top of the metal inner lining is formed with flat
Face, the plane and the tag slot that annular is formed between the annular groove of the metal inner lining the top.
7. full acetabular component according to claim 6, which is characterized in that be formed with cross recess in the plane.
8. full acetabular component according to claim 1 or 2, which is characterized in that in the metal inner lining and the polyethylene
Under the initial engagement state of liner, the lowermost end of the metal inner lining is higher than the number of the height of the lowermost end of the polyethylene liner
It is worth range between 6-10mm, and is located at the section diameter of a circle of the lowermost end of the metal inner lining and is located in the polyethylene
The ratio range of the section diameter of a circle of the lowermost end of lining is between 1.1-1.5.
9. full acetabular component according to claim 1 or 2, which is characterized in that the metal inner lining is by vitallium system
At the polyethylene liner is made of superhigh molecular weight polyethylene material.
10. full acetabular component according to claim 1 or 2, which is characterized in that the full acetabular component further includes being set in
Metal outer cup outside the liner, wherein pass through cement reaction between the metal inner lining of the liner and the metal outer cup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821529433.6U CN209464133U (en) | 2018-09-19 | 2018-09-19 | Full acetabular component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821529433.6U CN209464133U (en) | 2018-09-19 | 2018-09-19 | Full acetabular component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209464133U true CN209464133U (en) | 2019-10-08 |
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ID=68085752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821529433.6U Active CN209464133U (en) | 2018-09-19 | 2018-09-19 | Full acetabular component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209464133U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109259901A (en) * | 2018-09-19 | 2019-01-25 | 北京市春立正达医疗器械股份有限公司 | Full acetabular component |
-
2018
- 2018-09-19 CN CN201821529433.6U patent/CN209464133U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109259901A (en) * | 2018-09-19 | 2019-01-25 | 北京市春立正达医疗器械股份有限公司 | Full acetabular component |
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