CN103690275B - Bamboo-structure-simulated hollow-hole bone-integrated artificial hip joint femoral component - Google Patents

Bamboo-structure-simulated hollow-hole bone-integrated artificial hip joint femoral component Download PDF

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Publication number
CN103690275B
CN103690275B CN201310747561.3A CN201310747561A CN103690275B CN 103690275 B CN103690275 B CN 103690275B CN 201310747561 A CN201310747561 A CN 201310747561A CN 103690275 B CN103690275 B CN 103690275B
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CN
China
Prior art keywords
handle body
perforate
body portion
hip joint
artificial hip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
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CN201310747561.3A
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Chinese (zh)
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CN103690275A (en
Inventor
刘泗岩
卢光明
廖文和
刘浩
周长圣
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Nanjing University of Aeronautics and Astronautics
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Nanjing University of Aeronautics and Astronautics
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Priority to CN201310747561.3A priority Critical patent/CN103690275B/en
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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
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • 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

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  • 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

A bamboo-structure-simulated hollow-hole bone-integrated artificial hip joint femoral component is characterized by comprising a solid head and neck part (10) and a hollow body part (20). One end, close to the head and neck part, of the body part is provided with a threaded hole (21). By the threaded hole (21), loading and taking out of the femoral component is facilitated, and loading biological activity bone filler into an inner cavity is facilitated. A plurality of holes (23) communicated with the inner cavity of the body part are formed in the body part. A plurality of transverse rib plates (24) are disposed in the inner cavity of the body part. The transverse rib plates separate the body part into a plurality of chambers (26) and allows the body part to form a bamboo joint structure so as to reduce the difference between the femoral component and femoral elasticity modulus, and the space allowing a thighbone to grow into the femoral component is provided. Rib plate holes (25) communicating adjacent chambers are formed in the transverse rib plates. The bamboo-structure-simulated hollow-hole bone-integrated artificial hip joint femoral component is high in bone integration level, low in femoral component and femoral elasticity modulus difference, low in manufacturing cost, and the like.

Description

Imitative bamboo structure hollow perforate Integrated implant type artificial hip joint femoral shaft
Technical field
The present invention relates to a kind of medical apparatus and instruments, especially a kind of artificial joint, specifically a kind of imitative bamboo structure hollow perforate Integrated implant type artificial hip joint femoral shaft.
Background technology
At present, the artificial hip joint femoral shaft on market is mostly solid construction, although after adopting surface spraying biomaterial, can improve the integration with osseous tissue, degree of integration is still limited.On the other hand, the femoral stem of solid construction is because its elastic modelling quantity is much larger than osseous tissue, the load causing the osseous tissue around femoral stem to bear is too small and cause bone resorption (" stress shielding " effect), and then cause the aseptic loosening of femoral stem, need to carry out revision procedure, add misery and the financial burden of patient.Ideally, femoral stem has similar bone trabecular organizational structure, makes the elastic modelling quantity of femoral stem close with osseous tissue, thus avoids " stress shielding " effect, and femoral stem and femur are integrated.Although there is " bone trabecula " type femoral stem abroad, manufacturing technology has not been public domain.Also have in published document and relate to hollow type femoral stem, but also there is complex structure, shortcoming that manufacturing cost is high.
Summary of the invention
The object of the invention is for elastic modulus difference large, the Integrated implant degree low problem of existing solid construction femoral stem existence with femur, and the shortcoming such as hollow-core construction femoral stem disclosed in existing the document intensity low, complex structure, the manufacturing cost that exist be high, a kind of imitative bamboo structure of design, hollow perforate, Integrated implant type artificial hip joint femoral shaft, the advantages such as Integrated implant degree is high, little with the elastic modulus difference of femur, low cost of manufacture that it has.
Technical scheme of the present invention is:
A kind of imitative bamboo structure hollow perforate Integrated implant type artificial hip joint femoral shaft, it is characterized in that it is made up of solid incidence 10 and hollow handle body portion 20, described incidence 10 is connected with handle body portion 20 entirety, described handle body portion 20 is provided with near one end of incidence 10 to be convenient to load and take out femoral stem, and the screwed hole 21 of biological activity bone filler 27 is installed additional to the internal cavities of femoral stem, described handle body portion 20 offers multiple handle body perforate 23 connected with its inner chamber, some horizontal gussets 24 are provided with in the inner chamber in handle body portion 20, handle body portion 20 is separated into several chambers 26 and makes handle body portion 20 form class bamboo joint structure by this horizontal gusset 24, to improve the intensity/mass ratio in handle body portion, reduce the elastic modulus difference of handle body portion and femur, thus alleviate " stress shielding " effect, and to grow into femoral stem providing space inside for osseous tissue.Described horizontal gusset 24 offers the gusset perforate 25 being communicated with adjacent chamber 26, thus makes whole handle body portion intracavity inter-connection.
Biological activity bone filler 27 is all filled with in described chamber 26, handle body perforate 23 and gusset perforate 25.
Described biological activity bone filler 27 is autologous bone, allograph bone or the biomaterial with osteogenic induction effect.
The described biomaterial with osteogenic induction effect is bone morphogenetic protein-carrier complexes.
The all or part of region of the outer surface in described handle body portion 20 is coated with bioactivity coatings.
Described subregion is one section near incidence 10 in handle body portion 20.
Described bioactivity coatings is hydroxyapatite coating layer or titanium coating.
The incidence 10 that described entirety is connected and handle body portion 20 are the metal material hot investment casting profiled member of biocompatibility.
Described horizontal gusset 24 is at least 3, and the quantity of the chamber 26 formed is at least 4, and the quantity of gusset perforate 25 on the horizontal gusset of incidence 10 is greater than the quantity away from the gusset perforate 25 on the horizontal gusset of incidence 10.
Beneficial effect of the present invention:
Femoral stem of the present invention is by the structural design of " imitative bamboo structure is communicated with perforate ", not only substantially increase intensity/mass ratio, reduce the difference of femoral stem and bone formation elastic modelling quantity, thus alleviate " stress shielding " effect, and make bone formation deep enoughly to grow in femoral stem, greatly improve Integrated implant degree.In addition, it is simple that the present invention also has structure, the advantage of low cost of manufacture.
Accompanying drawing explanation
Fig. 1 is population structure schematic diagram of the present invention, and left figure is profile axonometric chart, and the right is sectional view (outer cinclides 23 has been hidden a part).
Fig. 2 is contour structures schematic diagram of the present invention, and left figure is front view, and right figure is left view.
Fig. 3 by Fig. 2 the corresponding everywhere sectional drawing of mark.
Fig. 4 is outer wall pore size distribution schematic diagram in handle body portion 20 of the present invention, and middle figure is front view, and left figure is right view, and right figure is left view.
Fig. 5 is the structural representation (concealing outer cinclides) of horizontal gusset of the present invention.
Fig. 6 is the sectional view at A-A place in Fig. 5.
Fig. 7 is the generalized section after the cavity interior loading bioactive bone implant of handle body.
Fig. 8 is the sectional drawing at A-A place in Fig. 7.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further illustrated.
As shown in figures 1-8.
A kind of imitative bamboo structure hollow perforate Integrated implant type artificial hip joint femoral shaft, it is made up of solid incidence 10 and hollow handle body portion 20, described incidence 10 and handle body portion 20 adopt the metal material hot investment casting global formation of biocompatibility, as shown in Figure 1, described handle body portion 20 is provided with near one end of incidence 10 to be convenient to load and take out femoral stem, and internally cavity installs the screwed hole 21 of biological activity bone filler 27 additional, as Fig. 1, described handle body portion 20 offers multiple handle body perforate 23 connected with its inner chamber, as Fig. 4, 3 pieces of horizontal gussets 24 are at least provided with in the inner chamber in handle body portion 20, 4 horizontal gussets 24 are provided with in Fig. 5 of the present embodiment, it is 5 chambers 26 that handle body portion 20 is separated in the accompanying drawing of this enforcement of at least 4 chamber 26(by this horizontal gusset 24) and make handle body portion 20 form class bamboo joint structure, thus greatly improve the intensity/mass ratio of femoral stem, reduce the difference of handle body portion and femur elastic modelling quantity, described horizontal gusset 24 offers the gusset perforate 25 being communicated with adjacent chamber 26, the quantity of the gusset perforate 25 wherein on the horizontal gusset of incidence 10 is greater than the quantity (only having a gusset through hole 25 see in Fig. 5, Fig. 5 on incidence horizontal gusset 24 farthest) away from the gusset perforate 25 on the horizontal gusset of incidence 10.Biological activity bone filler 27 is all filled with in chamber 26 described in during concrete enforcement, handle body perforate 23 and gusset perforate 25, as Figure 7-8, described biological activity bone filler 27 is autologous bone, allograph bone or the biomaterial with osteogenic induction effect, and the biomaterial with osteogenic induction effect in tool can adopt bone morphogenetic protein-carrier complexes.For the ease of merging with femur, also can at all or part of region sprayed biological active coating of the outer surface in described handle body portion 20 during concrete enforcement.Described subregion is one section near incidence 10 in handle body portion 20.
Details are as follows:
As shown in Figure 1, femoral stem of the present invention comprises solid incidence 10 and hollow handle body portion 20, and the top in handle body portion 20 is provided with craft thread hole 21.The material of femoral stem can be Ti6Al4V alloy, adopts model casting molding.Longitudinal profile of femoral stem as shown in Figure 2, nearly section inside handle body portion 20 and stage casing have employed Curve Design, make itself and femoral bone cavitas medullaris profile substantially identical, nearly section outside handle body portion 20 is Curve Design, stage casing and section far away are straight line, the section far away in handle body portion 20 is cylindrical structural, and end is bullet-headed.The side, front and back in handle body portion 20 is wedge shape in nearly section and stage casing.Handle body portion 20 characteristic cross-section shape everywhere as shown in Figure 3.In handle body portion 20, the distribution of handle body perforate 23 as shown in Figure 4.Handle body perforate 23 can cast time molding, also can shape by methods such as machine cut, laser, electrochemistry after casting.The structure of the horizontal gusset 24 of inside, handle body portion 20 (conceals outer cinclides) as shown in Figure 5, and in Fig. 5, the sectional view at A-A place as shown in Figure 6.The nearly section in handle body portion 20, nearly section and stage casing or all surfaces spraying hydroxyapatite coating, this coating can adopt the methods such as plasma spraying, laser spraying or electrochemical deposition to manufacture.
After the mechanical part of femoral stem completes, do the process such as high temperature sterilize, then package spare.During operation, be implanted into biological activity bone filler 27 at the chamber 26 of femoral stem, the spongy bone block obtained when cutting femoral head neck and process near end of thighbone pulp cavity when this biological activity bone filler 27 can be operation or bone bits.As another embodiment of the invention, this biological activity bone filler 27 also can be the collagen protein sponge being loaded with bone morphogenetic protein (rhBMP-2).Femoral stem section after implantable bioartificial active bone implant 27 as illustrated in figs. 7 and 8.
The part that the present invention does not relate to prior art that maybe can adopt all same as the prior art is realized.

Claims (9)

1. an imitative bamboo structure hollow perforate Integrated implant type artificial hip joint femoral shaft, it is characterized in that it is made up of solid incidence (10) and hollow handle body portion (20), described incidence (10) is connected with handle body portion (20) entirety, described handle body portion (20) is provided with near one end of incidence (10) to be convenient to load and take out femoral stem, and internally cavity installs the screwed hole (21) of biological activity bone filler (27) additional, described handle body portion (20) offers multiple handle body perforate (23) connected with its inner chamber, some horizontal gussets (24) are provided with in the inner chamber in handle body portion (20), handle body portion (20) is separated into several chambers (26) and makes handle body portion (20) form the structure of similar ring by this horizontal gusset (24), to reduce the difference of femoral stem and femur elastic modelling quantity, and to grow into femoral stem providing space inside for osseous tissue, described horizontal gusset (24) offers the gusset perforate (25) being communicated with adjacent chamber (26), thus make the intracavity inter-connection in whole handle body portion.
2. imitative bamboo structure according to claim 1 hollow perforate Integrated implant type artificial hip joint femoral shaft, is characterized in that all being filled with biological activity bone filler (27) in described chamber (26), handle body perforate (23) and gusset perforate (25).
3. imitative bamboo structure according to claim 1 and 2 hollow perforate Integrated implant type artificial hip joint femoral shaft, is characterized in that described biological activity bone filler (27) is for having the biomaterial of osteogenic induction effect.
4. imitative bamboo structure according to claim 3 hollow perforate Integrated implant type artificial hip joint femoral shaft, is characterized in that the described biomaterial with osteogenic induction effect is bone morphogenetic protein-carrier complexes.
5. imitative bamboo structure according to claim 1 hollow perforate Integrated implant type artificial hip joint femoral shaft, is characterized in that all or part of region of the outer surface in described handle body portion (20) is coated with bioactivity coatings.
6. imitative bamboo structure according to claim 5 hollow perforate Integrated implant type artificial hip joint femoral shaft, is characterized in that described subregion is one section of the upper close incidence (10) in handle body portion (20).
7. imitative bamboo structure according to claim 5 hollow perforate Integrated implant type artificial hip joint femoral shaft, is characterized in that described bioactivity coatings is hydroxyapatite coating layer or titanium coating.
8. imitative bamboo structure according to claim 1 hollow perforate Integrated implant type artificial hip joint femoral shaft, is characterized in that the incidence (10) that described entirety is connected and the metal material hot investment casting profiled member that handle body portion (20) is biocompatibility.
9. imitative bamboo structure according to claim 1 hollow perforate Integrated implant type artificial hip joint femoral shaft, it is characterized in that described horizontal gusset (24) is at least 3, the quantity of the chamber (26) formed is at least 4, and the quantity of gusset perforate (25) on the horizontal gusset of incidence (10) is greater than the quantity away from the gusset perforate (25) on the horizontal gusset of incidence (10).
CN201310747561.3A 2013-12-31 2013-12-31 Bamboo-structure-simulated hollow-hole bone-integrated artificial hip joint femoral component Expired - Fee Related CN103690275B (en)

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103876863A (en) * 2014-04-20 2014-06-25 赵全明 Biological type artificial joint prosthesis
CN104784760B (en) * 2015-03-25 2017-05-17 华南协同创新研究院 Low-elastic-modulus integrated titanium-based femoral handle and preparation method thereof
US10278823B1 (en) * 2018-04-18 2019-05-07 ZSFab, Inc. Lightweight femoral stem for hip implants
CN112155798B (en) * 2020-10-30 2024-04-09 嘉思特华剑医疗器材(天津)有限公司 Titanium alloy partitioned bone small Liang Gugu handle and preparation method thereof
CN115252229B (en) * 2022-06-28 2024-03-19 香港中文大学 Intra-osseous plant

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4292695A (en) * 1980-06-25 1981-10-06 Lord Corporation Prosthesis stem
CN203074930U (en) * 2012-12-14 2013-07-24 山东省文登市整骨科技开发有限公司 Hollow implant hip joint stem
CN203074931U (en) * 2012-12-14 2013-07-24 山东省文登市整骨科技开发有限公司 Physiological type implant hip joint stem
CN203677320U (en) * 2013-12-31 2014-07-02 南京航空航天大学 Hollow opening osseous-integration artificial-hip-joint femoral shaft in bamboo-like structure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4292695A (en) * 1980-06-25 1981-10-06 Lord Corporation Prosthesis stem
CN203074930U (en) * 2012-12-14 2013-07-24 山东省文登市整骨科技开发有限公司 Hollow implant hip joint stem
CN203074931U (en) * 2012-12-14 2013-07-24 山东省文登市整骨科技开发有限公司 Physiological type implant hip joint stem
CN203677320U (en) * 2013-12-31 2014-07-02 南京航空航天大学 Hollow opening osseous-integration artificial-hip-joint femoral shaft in bamboo-like structure

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