CN108836577A - Acetabular component and artificial hip joint - Google Patents
Acetabular component and artificial hip joint Download PDFInfo
- Publication number
- CN108836577A CN108836577A CN201810817424.5A CN201810817424A CN108836577A CN 108836577 A CN108836577 A CN 108836577A CN 201810817424 A CN201810817424 A CN 201810817424A CN 108836577 A CN108836577 A CN 108836577A
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- Prior art keywords
- section
- mortar cup
- liner
- diameter
- guide section
- Prior art date
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- 210000004394 hip joint Anatomy 0.000 title claims abstract description 16
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 173
- 230000000903 blocking effect Effects 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 5
- 239000007769 metal material Substances 0.000 claims description 3
- 101100327917 Caenorhabditis elegans chup-1 gene Proteins 0.000 description 50
- 230000000694 effects Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 230000003044 adaptive effect Effects 0.000 description 3
- 210000001624 hip Anatomy 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- BVPWJMCABCPUQY-UHFFFAOYSA-N 4-amino-5-chloro-2-methoxy-N-[1-(phenylmethyl)-4-piperidinyl]benzamide Chemical compound COC1=CC(N)=C(Cl)C=C1C(=O)NC1CCN(CC=2C=CC=CC=2)CC1 BVPWJMCABCPUQY-UHFFFAOYSA-N 0.000 description 1
- 208000010392 Bone Fractures Diseases 0.000 description 1
- 206010017076 Fracture Diseases 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 229910000771 Vitallium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000000602 vitallium Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/34—Acetabular cups
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The present invention relates to the field of medical instrument technology more particularly to a kind of acetabular components and artificial hip joint.The acetabular component includes mortar cup and liner；The inner surface of mortar cup includes sequentially connected mortar cup guide section, stops section and locking trench segment；The outer surface of liner includes sequentially connected liner guide section, allowable strain slot section and locking projections section；Liner can be fastened with mortar cup, so that mortar cup guide section and liner guide section, blocking section and allowable strain slot section, locking trench segment and locking projections section cooperate；The diameter of locking projections section be less than locking trench segment diameter, greater than stop section diameter, no more than the diameter of mortar cup guide section.The artificial hip joint includes acetabular component.The purpose of the present invention is to provide acetabular component and artificial hip joints, are easy to deflect liner when solving operation existing in the prior art, feel perform the operation when squeezing into is unstable and raised the technical issues of cannot entering completely in the groove of mortar cup of liner.
Description
Technical field
The present invention relates to the field of medical instrument technology more particularly to a kind of acetabular components and artificial hip joint.
Background technique
For artificial hip prosthesis after being implanted to human body, service life depends on many aspects：Such as femoral head prosthesis
With lock in mortar cup of the friction and wear behavior of acetabular component, the fixed effect of femoral stem and acetabular bone, liner and effect etc..?
Under the stress condition of hip joint complexity, liner experienced certain historical development in the lock and design of mortar cup, latest generation it is interior
Lining and mortar cup have been all made of the mode of lock sum, such as the R3 of Xerox's brightness, victory Trilogy, the Trident etc. of Shi Saike advanced in years；More than
Although design theoretically with good clinical effectiveness is all obtained in actual effect, still have certain problem, example
Such as：
1, be easy to squeeze into when liner is deflected or performed the operation when performing the operation when feel occurs and arduously, when and easily not
Stable case, once there is such situation, less serious case cause liner in mortar cup it is in place not just, severe one will lead to liner and mortar
Locking effect between cup significantly reduces；If not timing in place is firmly squeezed into, may result in break at liner locking or
Severe plastic deformation occurs；
2, the protrusion of liner cannot enter position completely in the groove of mortar cup, cause locking effect to be deteriorated, in long-term use
Middle liner is easy abjection, or generate back clast etc..
Therefore, the present invention, aiming to the above problems, provides a kind of new acetabular component and artificial hip joint, in order to by liner
It correctly squeezes into mortar cup, the probability for deflecting liner is easy when reducing operation, and reduce ditch of the protrusion in mortar cup of liner
The probability of position cannot be entered in slot completely, while feel stability when operation is squeezed into can also be improved.
Summary of the invention
The purpose of the present invention is to provide acetabular components, are easy to beat liner when solving operation existing in the prior art
The technical issues of feel askew, that operation is when squeezing into is unstable and the protrusion of liner cannot enter completely in the groove of mortar cup.
The object of the invention is also to provide artificial hip joints, and being easy when solving operation existing in the prior art will be interior
Lining deflects, feel perform the operation when squeezing into is unstable and the raised technology that cannot enter position completely in the groove of mortar cup of liner is asked
Topic.
Based on above-mentioned first purpose, acetabular component provided by the invention, including mortar cup and liner；
Along the axial direction of the mortar cup, the inner surface of the mortar cup includes sequentially connected mortar cup guide section, stops section and lock
Determine trench segment；Wherein, relative to the locking trench segment, rim of a cup of the mortar cup guide section close to the mortar cup；
Along the axial direction of the liner, the outer surface of the liner includes sequentially connected liner guide section, allowable strain slot
Section and locking projections section；
The liner can be fastened with the mortar cup, so that the mortar cup guide section and the liner guide section, the resistance
It keeps off section and the allowable strain slot section, the locking trench segment and the locking projections section cooperates；
The diameter of the diameter of the locking projections section and the liner guide section is respectively greater than the allowable strain slot section
Diameter；
The diameter of the locking projections section is less than the diameter of the locking trench segment, and the diameter of the locking projections section is greater than
The diameter for stopping section, the diameter of the locking projections section are not more than the diameter of the mortar cup guide section；
The diameter of the liner guide section is not more than the diameter of the mortar cup guide section；
The blocking section and the allowable strain slot section clearance fit.
Optional technical solution of the invention is that the inner surface of the mortar cup includes drawing inner conical surface section；The drawing inner cone
Face section is connect with the mortar cup guide section far from described one end for stopping section；Along the axial direction of the mortar cup, the drawing inner conical surface
The tapered diameter of section is to the mortar cup guide section；
The outer surface of the liner includes the drawing male cone (strobilus masculinus) section with the drawing inner conical surface section cooperation；The drawing outer cone
Face section is connect with the liner guide section far from one end of the allowable strain slot section.
Optional technical solution of the invention is the cone angle of the cone angle of the drawing inner conical surface section and the drawing male cone (strobilus masculinus) section
It is identical；
The drawing inner conical surface section and the drawing male cone (strobilus masculinus) section are interference fitted.
Optional technical solution of the invention is cone angle >=10 ° of the drawing inner conical surface section；
Magnitude of interference between the drawing inner conical surface section and the drawing male cone (strobilus masculinus) section is 0-0.1mm.
Optional technical solution of the invention is that the diameter of the locking projections section is equal to the diameter of the liner guide section；
The diameter of the locking projections section is less than the diameter of the mortar cup guide section；
The diameter of the liner guide section is less than the diameter of the mortar cup guide section.
Optional technical solution of the invention is, along the radial direction of the mortar cup, the locking projections section and the mortar cup are oriented to
Gap between section is 0.01mm-0.1mm；
Gap between the liner guide section and the mortar cup guide section is 0.01mm-0.1mm；
Along the radial direction of the mortar cup, the gap that locking projections section is greater than between the blocking section is 0.05mm-0.15mm；
Along the radial direction of the mortar cup, the area of section for stopping gap between section and the allowable strain slot section is not less than
0.2 square millimeter.
Optional technical solution of the invention is that the inner surface of the mortar cup includes anti-rotation groove section；The anti-rotation is recessed
The rim of a cup of the mortar cup is arranged in slot section；
The outer surface of the liner includes the anti-rotation raised section with anti-rotation groove section cooperation；
The diameter of the anti-rotation groove section is greater than the diameter of the mortar cup guide section.
Optional technical solution of the invention is, along the circumferential direction of the mortar cup, the inner surface of the mortar cup is arranged at intervals with more
A anti-rotation groove section；The quantity of the quantity of the anti-rotation raised section and the anti-rotation groove section corresponds；
The volume for the protrusion that the anti-rotation raised section is formed is not less than 20 cubic millimeters.
Optional technical solution of the invention is that the liner, which uses, has elastically-deformable medical plastic；The mortar cup is adopted
Use metal material；
The locking projections section has chamfering far from one end of the allowable strain slot section.
Based on above-mentioned second purpose, artificial hip joint provided by the invention, including the acetabular component.
By adopting the above technical scheme, beneficial effects of the present invention：
Acetabular component provided by the invention, including mortar cup and liner；Wherein, the inner surface of mortar cup includes sequentially connected mortar
Cup guide section stops section and locking trench segment, and the outer surface of liner includes sequentially connected liner guide section, allowable strain slot section
With locking projections section, the diameter of the mortar cup guide section of mortar cup is not more than by the diameter of the locking projections section of liner, so that mortar cup
Mortar cup guide section the locking projections section of liner can be guided to enter mortar cup, namely guidance liner enters mortar cup, can be realized
It is adaptive directed, so that operation feel stable and consistent, is easy the probability for deflecting liner when reducing operation；Pass through locking projections section
Diameter be greater than the diameter for stopping section, the diameter of locking projections section is less than the diameter of locking trench segment, locking projections section is beaten
After entering to lock in trench segment, locking trench segment and blocking section can firmly lock locking projections section, improve liner in mortar
Locking effect in cup；By mortar cup guide section, stop section, locking trench segment, liner guide section, allowable strain slot section and locking
The mutual cooperation of raised section cannot enter the probability of position to reduce liner in mortar cup completely, and being easy when reduction operation will be interior
The probability deflected is served as a contrast, the stable consistency of operation feel is improved, improves the locking effect of liner Yu mortar cup.
Artificial hip joint provided by the invention can correctly squeeze into liner in mortar cup, and being easy when reducing operation will be interior
The probability deflected is served as a contrast, and reduce the raised of liner to enter the probability of position completely in the groove of mortar cup, while can also mentioned
Feel stability when height operation is squeezed into.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the mortar cup for the acetabular component that the embodiment of the present invention one provides；
Fig. 2 is the structural schematic diagram of the liner for the acetabular component that the embodiment of the present invention one provides；
Fig. 3 is the mortar cup for the acetabular component that the embodiment of the present invention one provides and the first state figure of liner cooperation；
Fig. 4 is the mortar cup for the acetabular component that the embodiment of the present invention one provides and the second state diagram of liner cooperation；
Fig. 5 is the mortar cup for the acetabular component that the embodiment of the present invention one provides and the third state figure of liner cooperation；
Fig. 6 is the mortar cup for the acetabular component that the embodiment of the present invention one provides and the 4th state diagram of liner cooperation；
Fig. 7 is the explosive view for the acetabular component that the embodiment of the present invention one provides.
Icon：1- mortar cup；11- locks trench segment；12- stops section；13- mortar cup guide section；14- pulls inner conical surface section；15-
Anti-rotation groove section；2- liner；21- locking projections section；22- allowable strain slot section；23- liner guide section；24- pulls male cone (strobilus masculinus)
Section；25- anti-rotation raised section.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Embodiment one
Refer to figures 1-7, a kind of acetabular component is present embodiments provided；Fig. 1 is that acetabular bone provided in this embodiment is false
The structural schematic diagram of the mortar cup of body, Fig. 2 be acetabular component provided in this embodiment liner structural schematic diagram, wherein Fig. 1 and
Fig. 2 is that the cross-sectional view of mortar cup and liner does not show hatching to clearly show that structure；Fig. 3-Fig. 6 be the present embodiment provides
Acetabular component mortar cup and liner cooperation four kinds of state diagrams, wherein Fig. 3 show be liner with mortar cup not in contact with shape
State, Fig. 4 is the guiding state that liner is put into mortar cup, and at this time it is not necessary to be tapped, Fig. 5 leads for the extruding that liner is put into mortar cup
To state, to guarantee not deviate squeezing into process, Fig. 6 is liner situation in place in mortar cup, the space of allowable strain
Clearly；Fig. 7 is the explosive view of acetabular component provided in this embodiment.
Acetabular component provided in this embodiment is suitable for artificial hip prosthesis.
Refer to figures 1-7, the acetabular component, including mortar cup 1 and liner 2；
Along the axial direction of mortar cup 1, the inner surface of mortar cup 1 includes sequentially connected mortar cup guide section 13, stops section 12 and locking
Trench segment 11；Wherein, relative to locking trench segment 11, rim of a cup of the mortar cup guide section 13 close to mortar cup 1；
Along the axial direction of liner 2, the outer surface of liner 2 includes sequentially connected liner guide section 23, allowable strain slot section 22
With locking projections section 21；Optionally, when liner 2 and mortar cup 1 fasten, the axial direction of mortar cup 1 is axially coincident with liner 2.
Liner 2 can be fastened with mortar cup 1, so as to mortar cup guide section 13 and liner guide section 23, stop section 12 and allow to become
Shape slot section 22, locking trench segment 11 and locking projections section 21 cooperate；
The diameter of the locking projections section 21 of liner 2 and the diameter of liner guide section 23 are respectively greater than allowable strain slot section 22
Diameter；
The diameter of the locking projections section 21 of liner 2 is less than the diameter of locking trench segment 11, and the diameter of locking projections section 21 is big
In the diameter for stopping section 12；
The diameter of locking projections section 21 is not more than the diameter of mortar cup guide section 13, to provide liner 2 in being put into mortar cup 1
Guiding, to guarantee that liner 2 does not tilt in mortar cup 1.
The diameter of the liner guide section 23 of liner 2 is not more than the diameter of mortar cup guide section 13；So that mortar cup 1 and liner 2 are matched
After conjunction, the liner guide section 23 of liner 2 can be contained in mortar cup guide section 13；It ensure that and tapped in operation to a certain extent
During, liner 2 does not tilt in mortar cup 1, smoothly enters position.
Stop section 12 and 22 clearance fit of allowable strain slot section；Namely after liner 2 and mortar cup 1 fasten, stops section 12 and hold
Perhaps deforming has gap between slot section 22.
Acetabular component described in the present embodiment, including mortar cup 1 and liner 2；Wherein, the inner surface of mortar cup 1 includes successively connecting
Mortar cup guide section 13, blocking section 12 and the locking trench segment 11 connect, the outer surface of liner 2 includes sequentially connected liner guide section
23, allowable strain slot section 22 and locking projections section 21 are not more than the mortar of mortar cup 1 by the diameter of the locking projections section 21 of liner 2
The diameter of cup guide section 13, so that the mortar cup guide section 13 of mortar cup 1 can guide the locking projections section 21 of liner 2 to enter mortar cup 1,
Namely guidance liner 2 enters mortar cup 1, and it is adaptive directed can be realized, so that operation feel stable and consistent, holds when reducing operation
The probability that easily liner 2 is deflected；Be greater than the diameter for stopping section 12 by the diameter of locking projections section 21, locking projections section 21 it is straight
Diameter is less than the diameter of locking trench segment 11, after locking projections section 21 is squeezed into locking trench segment 11, locks 11 He of trench segment
Stop section 12 that can firmly lock locking projections section 21, improves locking effect of the liner 2 in mortar cup 1；Pass through mortar cup
Guide section 13, the phase for stopping section 12, locking trench segment 11, liner guide section 23, allowable strain slot section 22 and locking projections section 21
Mutually cooperation cannot enter the probability of position to reduce liner 2 in mortar cup 1 completely, and while reducing operation is easy to deflect liner 2
Probability improves the stable consistency of operation feel, improves the locking effect of liner 2 Yu mortar cup 1.
In the optinal plan of the present embodiment, the inner surface of mortar cup 1 includes drawing inner conical surface section 14；Pull inner conical surface section 14 with
Mortar cup guide section 13 is far from one end connection for stopping section 12；Along the axial direction of mortar cup 1, the tapered diameter of inner conical surface section 14 is pulled to mortar
Cup guide section 13；Namely diameter of the drawing inner conical surface section 14 close to one end of the rim of a cup of mortar cup 1 is greater than it close to mortar cup guide section
13 diameters far from the one end for stopping section 12.
The outer surface of liner 2 includes the drawing male cone (strobilus masculinus) section 24 cooperated with drawing inner conical surface section 14；Pull male cone (strobilus masculinus) section 24
It is connect with liner guide section 23 far from one end of allowable strain slot section 22.Along the axial direction of liner 2, the diameter of male cone (strobilus masculinus) section 24 is pulled
It is tapered to liner guide section 23；Namely diameter of the drawing male cone (strobilus masculinus) section 24 close to one end of the rim of a cup of mortar cup 1 is greater than it close to interior
Serve as a contrast the diameter of the one end of guide section 23 far from allowable strain slot section 22.By drawing inner conical surface section 14 and male cone (strobilus masculinus) section 24 is pulled,
To realize the preliminary guiding of liner 2 and the cooperation of mortar cup 1.
In the optinal plan of the present embodiment, the cone angle for pulling inner conical surface section 14 is identical as the drawing cone angle of male cone (strobilus masculinus) section 24；
As shown in Figure 1, the cone angle of drawing inner conical surface section 14 is A；As shown in Fig. 2, the cone angle of drawing male cone (strobilus masculinus) section 24 is B.
It pulls inner conical surface section 14 and drawing male cone (strobilus masculinus) section 24 is interference fitted.By using interference fit, to further increase
Locking effect of the liner 2 in mortar cup 1.Specifically, enabling the locking projections section 21 of liner 2 by way of tapping in operation
It is exactly into the locking trench segment 11 of mortar cup 1, it can be free in order to reduce or avoid liner 2 to be in mortar cup 1
Unstable state that is mobile or shaking guarantees liner 2 and the good locking effect of mortar cup 1, drawing inner cone is used in the present embodiment
The cone angle of face section 14 is identical as the drawing cone angle of male cone (strobilus masculinus) section 24, drawing inner conical surface section 14 is matched with drawing 24 interference of male cone (strobilus masculinus) section
It closes, so that locking projections section 21 and locking trench segment 11 are constantly in tension state for a long time, i.e., there are internal stress for acetabular component.?
That is drawing inner conical surface section 14 and drawing male cone (strobilus masculinus) section 24 provides the internal stress.
Optionally, cone angle >=10 ° of inner conical surface section 14 are pulled；Optionally, cone angle and the drawing for pulling inner conical surface section 14 are outer
The cone angle of conical surface section 24 is identical, is all larger than equal to 10 °.The angle is to prevent from realizing self-locking, Wu Fashi between liner 2 and mortar cup 1
Now pull the effect of locking projections section 21.
Optionally, the magnitude of interference for pulling inner conical surface section 14 and pulling between male cone (strobilus masculinus) section 24 is 0-0.1mm.
In the optinal plan of the present embodiment, the diameter of locking projections section 21 is not more than the diameter of liner guide section 23；It is optional
Ground, the diameter of the locking projections section 21 of liner 2 are equal to the diameter of liner guide section 23；In order to the locking projections section 21 of liner 2
Enter mortar cup 1 into mortar cup 1, namely guidance liner 2, it is adaptive directed can be realized, so that operation feel stable and consistent.
Optionally, the diameter of the locking projections section 21 of liner 2 is less than the diameter of mortar cup guide section 13；Optionally, along mortar cup 1
Radial direction, gap between the locking projections section 21 and mortar cup guide section 13 of liner 2 is 0.01mm-0.1mm；That is, mortar cup is led
The half of the value of the diameter of locking projections section 21 is subtracted to the diameter of section 13 between 0.01mm-0.1mm.
Optionally, the diameter of the liner guide section 23 of liner 2 is less than the diameter of mortar cup guide section 13.Optionally, along mortar cup 1
Radial direction, gap between the liner guide section 23 and mortar cup guide section 13 of liner 2 is 0.01mm-0.1mm；That is, mortar cup is led
The half of the value of the diameter of liner guide section 23 is subtracted to the diameter of section 13 between 0.01mm-0.1mm.
Optionally, along the radial direction of mortar cup 1, the gap that the locking projections section 21 of liner 2 is greater than between blocking section 12 is
0.05mm-0.15mm；That is, the diameter of locking projections section 21 subtracts the half for the value of diameter for stopping section 12 in 0.05mm-
Between 0.15mm, to guarantee the locking effect after liner 2 is driven into mortar cup 1 under the premise of not causing operating difficulty excessively high.
Optionally, along the radial direction of mortar cup 1, the area of section in gap between section 12 and allowable strain slot section 22 is stopped to be not less than
0.2 square millimeter；It is driven into mortar cup 1 in liner 2, the meeting generating material deformation of locking projections section 21, deformed material needs
There is certain space to be accommodated, which is exactly the important space of receiving material deformation.
In the optinal plan of the present embodiment, the inner surface of mortar cup 1 includes anti-rotation groove section 15；Anti-rotation groove section 15 is set
Set the rim of a cup in mortar cup 1；Optionally, the one of the rim of a cup for pulling inner conical surface section 14 close to mortar cup 1 is arranged in anti-rotation groove section 15
End.
Optionally, the outer surface of liner 2 includes the anti-rotation raised section 25 cooperated with anti-rotation groove section 15；People is moving
When, it will lead between liner 2 and mortar cup 1 that there are torques；Cooperated by anti-rotation groove section 15 and anti-rotation raised section 25, to prevent
Only mortar cup 1 is rotated relative to liner 2.
The diameter of anti-rotation groove section 15 is greater than the diameter of mortar cup guide section 13.Optionally, anti-rotation groove section 15 is straight
Diameter is greater than the diameter of drawing inner conical surface section 14.
Optionally, along the circumferential direction of mortar cup 1, the inner surface of mortar cup 1 is arranged at intervals with multiple anti-rotation groove sections 15；Anti-rotation
The quantity of raised section 25 and the quantity of anti-rotation groove section 15 correspond；By the way that multiple anti-rotation groove sections 15 and anti-rotation is arranged
Turn raised section 25, to improve the anti-rotation performance between mortar cup 1 and liner 2, reduction occurs in process or use process
The risk of fracture.
Optionally, the quantity of anti-rotation groove section 15 is 3-6；Namely the quantity of anti-rotation raised section 25 is 3-6
It is a.
Optionally, the volume for the protrusion that anti-rotation raised section 25 is formed is not less than 20 cubic millimeters；Optionally, anti-rotation is recessed
The volume for the groove that slot section 15 is formed is not less than 20 cubic millimeters.In order to anti-rotation groove section 15 and anti-rotation raised section 25
Processing reduces the burr in production.
In the optinal plan of the present embodiment, liner 2 is using with elastically-deformable medical plastic；Mortar cup 1 uses metal material
Matter；For example, mortar cup 1 uses titanium alloy, vitallium or stainless steel etc. meet the material of the requirement of biological safety.
In the optinal plan of the present embodiment, the locking projections section 21 of liner 2 has far from one end of allowable strain slot section 22
Chamfering；In order to which locking projections section 21 enters mortar cup 1.
Embodiment two
Embodiment two provides a kind of artificial hip joint, which includes acetabular component described in embodiment one, implements
The technical characteristic of acetabular component disclosed in example one is also applied for the embodiment, the technology of the published acetabular component of embodiment one
Feature is not repeated to describe.
Artificial hip joint provided in this embodiment, including acetabular component；It further include femoral head prosthesis；Femoral head prosthesis and hip
The liner of mortar prosthese cooperates.The artificial hip joint can correctly squeeze into liner in mortar cup, and being easy when reducing operation will be interior
The probability deflected is served as a contrast, and reduce the raised of liner to enter the probability of position completely in the groove of mortar cup, while can also mentioned
Feel stability when height operation is squeezed into.
Artificial hip joint described in the present embodiment has the advantages that acetabular component described in embodiment one, disclosed in embodiment one
The acetabular component the advantages of be not repeated to describe herein.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, those skilled in the art should understand that：Its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other implementations
Certain features rather than other feature included by example, but the combination of the feature of different embodiments means in the present invention
Within the scope of and form different embodiments.For example, in claims above, embodiment claimed
It is one of any can in any combination mode come using.The information disclosed in the background technology section is intended only to deepen pair
The understanding of general background technology of the invention, and be not construed as recognizing or implying in any form that information composition has been this
The prior art well known to the technical staff of field.
Claims (10)
1. a kind of acetabular component, which is characterized in that including mortar cup and liner；
Along the axial direction of the mortar cup, the inner surface of the mortar cup includes sequentially connected mortar cup guide section, stops section and locking ditch
Slot section；Wherein, relative to the locking trench segment, rim of a cup of the mortar cup guide section close to the mortar cup；
Along the axial direction of the liner, the outer surface of the liner include sequentially connected liner guide section, allowable strain slot section and
Locking projections section；
The liner can be fastened with the mortar cup, so that the mortar cup guide section and the liner guide section, the blocking section
Cooperate with the allowable strain slot section, the locking trench segment and the locking projections section；
The diameter of the diameter of the locking projections section and the liner guide section is respectively greater than the diameter of the allowable strain slot section；
The diameter of the locking projections section is less than the diameter of the locking trench segment, and the diameter of the locking projections section is greater than described
Stop the diameter of section, the diameter of the locking projections section is not more than the diameter of the mortar cup guide section；
The diameter of the liner guide section is not more than the diameter of the mortar cup guide section；
The blocking section and the allowable strain slot section clearance fit.
2. acetabular component according to claim 1, which is characterized in that the inner surface of the mortar cup includes drawing inner conical surface
Section；The drawing inner conical surface section is connect with the mortar cup guide section far from described one end for stopping section；Along the axial direction of the mortar cup,
The tapered diameter of the drawing inner conical surface section is to the mortar cup guide section；
The outer surface of the liner includes the drawing male cone (strobilus masculinus) section with the drawing inner conical surface section cooperation；The drawing male cone (strobilus masculinus) section
It is connect with the liner guide section far from one end of the allowable strain slot section.
3. acetabular component according to claim 2, which is characterized in that the cone angle of the drawing inner conical surface section and the drawing
The cone angle of male cone (strobilus masculinus) section is identical；
The drawing inner conical surface section and the drawing male cone (strobilus masculinus) section are interference fitted.
4. acetabular component according to claim 3, which is characterized in that cone angle >=10 ° of the drawing inner conical surface section；
Magnitude of interference between the drawing inner conical surface section and the drawing male cone (strobilus masculinus) section is 0-0.1mm.
5. acetabular component according to claim 1, which is characterized in that the diameter of the locking projections section is equal to the liner
The diameter of guide section；
The diameter of the locking projections section is less than the diameter of the mortar cup guide section；
The diameter of the liner guide section is less than the diameter of the mortar cup guide section.
6. acetabular component according to claim 5, which is characterized in that along the radial direction of the mortar cup, the locking projections section
Gap between the mortar cup guide section is 0.01mm-0.1mm；
Gap between the liner guide section and the mortar cup guide section is 0.01mm-0.1mm；
Along the radial direction of the mortar cup, the gap that locking projections section is greater than between the blocking section is 0.05mm-0.15mm；
Along the radial direction of the mortar cup, the area of section for stopping gap between section and the allowable strain slot section is not less than 0.2
Square millimeter.
7. acetabular component according to claim 1, which is characterized in that the inner surface of the mortar cup includes anti-rotation groove
Section；The rim of a cup of the mortar cup is arranged in the anti-rotation groove section；
The outer surface of the liner includes the anti-rotation raised section with anti-rotation groove section cooperation；
The diameter of the anti-rotation groove section is greater than the diameter of the mortar cup guide section.
8. acetabular component according to claim 7, which is characterized in that along the circumferential direction of the mortar cup, the interior table of the mortar cup
Face interval is provided with multiple anti-rotation groove sections；The number of the quantity of the anti-rotation raised section and the anti-rotation groove section
Amount corresponds；
The volume for the protrusion that the anti-rotation raised section is formed is not less than 20 cubic millimeters.
9. acetabular component according to claim 1, which is characterized in that the liner, which uses, has elastically-deformable medical plastic
Material；The mortar cup uses metal material；
The locking projections section has chamfering far from one end of the allowable strain slot section.
10. a kind of artificial hip joint, which is characterized in that including the described in any item acetabular components of claim 1-9.
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|---|---|---|---|
| CN201810817424.5A CN108836577B (en) | 2018-07-24 | 2018-07-24 | Acetabular prosthesis and artificial hip joint |
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|---|---|---|---|
| CN201810817424.5A CN108836577B (en) | 2018-07-24 | 2018-07-24 | Acetabular prosthesis and artificial hip joint |
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| CN108836577A true CN108836577A (en) | 2018-11-20 |
| CN108836577B CN108836577B (en) | 2024-01-09 |
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| CN110833471A (en) * | 2019-11-26 | 2020-02-25 | 北京安颂科技有限公司 | Acetabulum prosthesis and artificial hip joint prosthesis |
| WO2020155376A1 (en) * | 2019-02-01 | 2020-08-06 | 北京爱康宜诚医疗器材有限公司 | Glenoid fossa prosthesis and joint prosthesis having same |
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| CN115462935A (en) * | 2022-08-12 | 2022-12-13 | 广州市威马兽医科技服务有限公司 | Double-layer acetabular cup prosthesis and preparation method thereof |
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