CN106580522A - Acetabulum filling prosthesis - Google Patents

Acetabulum filling prosthesis Download PDF

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Publication number
CN106580522A
CN106580522A CN201611090016.1A CN201611090016A CN106580522A CN 106580522 A CN106580522 A CN 106580522A CN 201611090016 A CN201611090016 A CN 201611090016A CN 106580522 A CN106580522 A CN 106580522A
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CN
China
Prior art keywords
connecting plate
acetabular bone
pelvis
internal face
filling
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.)
Granted
Application number
CN201611090016.1A
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Chinese (zh)
Other versions
CN106580522B (en
Inventor
殷庆丰
许奎雪
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Beijing AK Medical Co Ltd
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Beijing AK Medical Co Ltd
Priority date (The priority date 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 date listed.)
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Publication date
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Priority to CN201611090016.1A priority Critical patent/CN106580522B/en
Publication of CN106580522A publication Critical patent/CN106580522A/en
Application granted granted Critical
Publication of CN106580522B publication Critical patent/CN106580522B/en
Active legal-status Critical Current
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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
    • A61F2/34—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
    • A61F2/34—Acetabular cups
    • A61F2002/3401—Acetabular cups with radial apertures, e.g. radial bores for receiving fixation screws
    • A61F2002/3403—Polar aperture
    • 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
    • A61F2002/348—Additional features

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 invention provides an acetabulum filling prosthesis. The acetabulum filling prosthesis applying the technical scheme comprises a filling board structure. The filling board structure comprises a first connecting end which is connected with a pelvis and a second connecting end which is connected with an acetabulum cut from the pelvis. The filling board structure is used to fill in the gap between the pelvis and the acetabulum, so as to support and fix the cut acetabulum on a preset position of the pelvis. In an osteotomy, the gap between the cut acetabulum and the pelvis can be filled and supported. The acetabulum filling prosthesis solves problems in the prior art that no filling is performed in an osteotomy, or autologous bone filling is used, stress conducting effect is not good, and initial stability and early weight bearing are affected.

Description

Acetabular bone filling prosthesis
Technical field
The present invention relates to area of medical devices, in particular to a kind of acetabular bone filling prosthesis.
Background technology
Ganz osteotomies are the Periacetabular osteotomies that nineteen eighty-three is started by the Ganz doctor of Bern, SUI hospital.Ganz Osteotomy changes the direction of acetabular bone covering, increased hip joint to capital area coverage so that young acetabular development Bad patient delays or even avoids prosthetic replacement significantly.
To ensure acetabular bone center, can not can only be moved according to sclerotin situation around acetabular bone central rotation after acetabular bone osteotomy Dynamic, this is resulted in above acetabular bone and rear side formation Cranial defect, and the position that the two positions exactly mechanics is carried, conventional method is not Filling is filled using autologous bone, and stress conducting effect is not good, affects the initial stage stable and early loading；If generation bone grafting is inhaled Receive, it will affect long-term acetabular bone to stablize, and bone grafting size and shape are required in art being determined according to doctors experience, operating time Extend.
The content of the invention
Present invention is primarily targeted at provide a kind of acetabular bone filling prosthesis, to solve prior art in carry out bone-culting operation When be not filled with or filled using autologous bone, stress conducting effect is good, affects the initial stage stable and early loading problem.
To achieve these goals, a kind of content of the invention, there is provided acetabular bone filling prosthesis, including：Filling plate Body structure, fill plate body structure have the first connection end for being connected with pelvis and with the be connected by the acetabular bone cut down on pelvis Two connection ends, filling plate body structure is used to be filled in the gap between pelvis and acetabular bone, and the acetabular bone for cutting down is supported and consolidated It is scheduled on the precalculated position of pelvis.
Further, filling plate body structure includes：First connecting plate, is fixedly connected with the tangent plane of pelvis；Second connecting plate, It is fixedly connected with the tangent plane of acetabular bone；Gripper shoe, is arranged between the first connecting plate and the second connecting plate, and the first connecting plate is by propping up Fagging is connected to support and be fixed on the precalculated position of pelvis by the acetabular bone for cutting down with the second connecting plate.
Further, the first connecting plate, the second connecting plate and gripper shoe are integrally formed.
Further, the first connecting plate, the second connecting plate and gripper shoe constitute the plate body structure of bending.
Further, the first connecting plate has the first composition surface for being connected with the tangent plane of pelvis, the second connecting plate tool There is the second composition surface being connected for the tangent plane with acetabular bone, the first grid knot is provided with the first composition surface and the second composition surface Structure.
Further, the first connecting plate has the first internal face mutually deviated from the first composition surface, has on the second connecting plate There is the second internal face mutually deviated from the second composition surface, have adjacent with the first internal face and the second internal face the in gripper shoe Three internal faces；Wherein, the first internal face and the second internal face are relative, on the first internal face, the second internal face and the 3rd internal face It is provided with the second network.
Further, it is provided with plate body reinforcement on the first internal face, the second internal face and the 3rd internal face.
Further, it is provided with the first connecting plate and the second connecting plate and multiple puts nail, the first internal face and second It is provided with internal face around the nail reinforcement for putting nail.
Further, plate body reinforcement and nail reinforcement are connected with each other and are integrally formed.
Further, be provided with the first connecting plate and the second connecting plate it is multiple put nail for what is passed through for screw, Screw is located in puts in nail that the first connecting plate is fixedly connected or by the second connecting plate and acetabular bone with the tangent plane of pelvis Tangent plane is fixedly connected.
Further, the mating shapes of the shape of the first connecting plate and pelvis tangent plane, the shape and hip of the second connecting plate The mating shapes of the tangent plane of mortar.
Using the acetabular bone filling prosthesis of technical solution of the present invention, including：Filling plate body structure, filling plate body structure have with Pelvis connection the first connection end and with the second connection end be connected by the acetabular bone cut down on pelvis, fill plate body structure be used for It is filled in the gap between pelvis and acetabular bone, the acetabular bone for cutting down is supported and be fixed on the precalculated position of pelvis.Carry out The gap between the acetabular bone for cutting down and pelvis can be filled and be supported during osteotomy, be solved carried out in prior art and cut It is not filled with during bone art or is filled using autologous bone, stress conducting effect is not good, affects the initial stage stable and early loading problem.
Description of the drawings
The Figure of description for constituting the part of the application is used for providing a further understanding of the present invention, and the present invention's shows Meaning property embodiment and its illustrated for explaining the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is optional a kind of structural representation of acetabular bone filling prosthesis according to embodiments of the present invention；
Fig. 2 is optional mounting structure of a kind of acetabular bone filling prosthesis between pelvis and acetabular bone according to embodiments of the present invention Schematic diagram；And
Fig. 3 is the structural representation in the gap untied between midpelvis according to embodiments of the present invention and acetabular bone.
Wherein, above-mentioned accompanying drawing is marked including the following drawings：
10th, the first connecting plate；20th, the second connecting plate；30th, gripper shoe；40th, plate body reinforcement；50th, nail is put；60th, nail Reinforcement；70th, pelvis；80th, acetabular bone；90th, screw hole.
Specific embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase Mutually combination.Below with reference to the accompanying drawings and in conjunction with the embodiments describing the present invention in detail.
Acetabular bone filling prosthesis according to embodiments of the present invention, as depicted in figs. 1 and 2, including：Filling plate body structure, filling Plate body structure has the first connection end being connected with pelvis 70 and connects with second be connected by the acetabular bone 80 cut down on pelvis 70 End is connect, filling plate body structure is used to be filled in the gap between pelvis 70 and acetabular bone 80, the acetabular bone 80 for cutting down is supported simultaneously It is fixed on the precalculated position of pelvis 70.
Using a kind of acetabular bone filling prosthesis of technical solution of the present invention, including：Filling plate body structure, filling plate body structure tool Have the first connection end being connected with pelvis 70 and with the second connection end being connected by the acetabular bone 80 cut down on pelvis 70, fill plate Body structure is used to be filled in the gap between pelvis 70 and acetabular bone 80, and by the acetabular bone 80 for cutting down pelvis 70 is supported and be fixed on Precalculated position.The gap between the acetabular bone 80 for cutting down and pelvis 70 can be filled and be supported when osteotomy is carried out, Solving and be not filled with when carry out in prior art osteotomy or filled using autologous bone, stress conducting effect is not good, affect just Phase stable and early loading problem.
When being embodied as, as depicted in figs. 1 and 2, filling plate body structure includes：First connecting plate 10, the second connecting plate 20 With gripper shoe 30, the first connecting plate 10 is fixedly connected with the tangent plane of pelvis 70；Second connecting plate 20 is fixed with the tangent plane of acetabular bone 80 Connection；Gripper shoe 30 is arranged between the first connecting plate 10 and the second connecting plate 20, the first connecting plate 10 by gripper shoe 30 with Second connecting plate 20 connects to support and be fixed on the precalculated position of pelvis 70 by the acetabular bone for cutting down 80.
In order that the first connecting plate 10 is more consolidated with being connected with pelvis 70, and the second connecting plate 20 is set to connect with acetabular bone 80 Ground connection more consolidates, and alternatively, the shape of the first connecting plate 10 is identical with the shape and size of the tangent plane of pelvis 70, the second connecting plate 20 shape is identical with the shape and size of the tangent plane of acetabular bone 80, serves the effect of guide plate, has both been avoided that the first connecting plate 10 Or extend out in the excessive gap between pelvis 70 and acetabular bone 80 of the second connecting plate 20, meanwhile, it is capable to make the first connecting plate There is maximum bonding area, so that pelvis 70 and acetabular bone 80 between 10 and the connecting plate 20 of pelvis 70 and second and acetabular bone 80 Between it is more stable.
In order that filling plate body structure has preferable structural strength, the first connecting plate 10, the second connecting plate 20 and support Plate 30 is integrally machined shaping using titanium alloy.Specifically, can be made using 3D printing technique, three constitutes the plate body of bending Structure, wherein, gripper shoe 30 has certain radian, while preferable structural strength is ensured, reduces titanium alloy material Use.
First connecting plate 10 has the first composition surface for being connected with the tangent plane of pelvis 70, and the second connecting plate 20 has to be used In the second composition surface being connected with the tangent plane of acetabular bone 80, the first composition surface is the lateral surface of the first connecting plate 10, the second composition surface That is the lateral surface of the second connecting plate 20, tangent plane of the angle between the first composition surface and the second composition surface according to the acetabular bone 80 for cutting down It is determined with the angle of the tangent plane of pelvis 70, when filling plate body structure is filled in the gap between pelvis 70 and acetabular bone 80, Ensure that the first composition surface is effectively fitted with the tangent plane of pelvis 70, the second composition surface is effectively fitted with the tangent plane of acetabular bone 80.
Additionally, being provided with the first network on the first composition surface and the second composition surface, the first network is and people The consistent class bone trabecula grid of body bone trabecula, thickness is 2 to 3mm, can meet bone trabecula and grow into, and reaches filling prosthesis structure Effect steady in a long-term.
As shown in figure 1, the first connecting plate 10 has the first internal face mutually deviated from the first composition surface, the second connecting plate 20 It is upper that there is the second internal face mutually deviated from the second composition surface, have and the first internal face and the second internal face phase in gripper shoe 30 The 3rd adjacent internal face；First internal face, the second internal face and the 3rd internal face are the medial surface of filling prosthesis structure, in first Wall and the second internal face are relative.
In order to the metal for ensureing Cranial defect position is covered and while make the weight saving of filling prosthesis structure, alternatively, the It is provided with the second network on one internal face, the second internal face and the 3rd internal face, second network each grid Size can effectively play structure more than the size of each network in the first network by arranging the second network Loss of weight and be conducive to subsequently filling metal filled in the space between the first internal face, the second internal face and the 3rd internal face Thing, it is to avoid the complete cavity in the range of filling occur after mounting in acetabular bone filling prosthesis, it is ensured that acetabular bone filling prosthesis structural integrity And mechanics is carried.
In order to further enhance the overall construction intensity of filling prosthesis structure, as shown in figure 1, the first internal face, in second Plate body reinforcement 40 is provided with wall and the 3rd internal face, by arranging plate body reinforcement 40 filling prosthesis structure can be made Overall construction intensity effectively strengthen, improve its bending resistance.
In order that filling prosthesis structure can be firm and stably fixes with the tangent plane of the tangent plane of pelvis 70 and acetabular bone 80 and connect Connect, alternatively, as shown in figure 1, be provided with the first connecting plate 10 and the second connecting plate 20 it is multiple put nail 50, put nail 50 On be provided with screw thread, put in nail 50 so that the first connecting plate 10 to be fixedly connected with the tangent plane of pelvis 70 by the way that screw is located in Or be fixedly connected the second connecting plate 20 with the tangent plane of acetabular bone 80.
Structural strength at nail 50 is put in order to strengthen, as shown in figure 1, being all provided with the first internal face and the second internal face Be equipped with around putting the nail reinforcement 60 of nail 50, nail reinforcement 60 be connected with each other with plate body reinforcement 40 and be integrally formed from And make to put nail 50 and its structural strength of surrounding is greatly enhanced, it is to avoid cause cracking damage during screw force, more added with Beneficial to the short-term stability of acetabular bone filling prosthesis described in this patent.
In concrete surgical procedure, as shown in figure 3, after pelvis 70 and acetabular bone 80 are sectioned, the relative pelvis 70 of acetabular bone 80 Rotate a certain angle, so as to increase hip joint to capital area coverage, after acetabular bone 80 rotates, in acetabular bone 80 and pelvis 70 Otch between form gap, then filling prosthesis structure is inserted in gap make the tangent plane of the first connecting plate 10 and pelvis 70 by Correspond to according to boundary dimensions, then by put nail guide plate by the screw of predetermined length from the different azimuth of pelvis 70 respectively along screw hole 90 insert putting in nail 50 on first connecting plate 10；Subsequently, by the tangent plane of the second connecting plate 20 and acetabular bone according to boundary dimensions Correspond to, then the screw of predetermined length is respectively implanted into second from the different azimuth of acetabular bone 80 along screw hole 90 by putting nail guide plate The fixation that a filling prosthesis structure is completed in nail 50 is put on connecting plate 20.Finally, in the same manner by others Filling prosthesis structure is sequentially arranged in the gap between pelvis 70 and acetabular bone 80 and completes Ganz osteotomies.
Carrying out Ganz osteotomies using the filling prosthesis structure of the embodiment of the present invention can reach following technique effect：
1st, optimize postoperative mechanotransduction, enhance the medium-term and long-term intensity of postoperative acetabular bone, preferably ensure that stablizing for acetabular bone Property；
2nd, class bone trabecula grid promotes acetabular bone part spongiosa Bone Ingrowth prosthese, reaches good postoperative longer period
3rd, filling prosthesis structure serves the effect of guide plate, significantly simplify operation, shortens operating time, reduces The risk of infection.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for the skill of this area For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair Change, equivalent, improvement etc., should be included within the scope of the present invention.

Claims (11)

1. a kind of acetabular bone filling prosthesis, it is characterised in that include：Filling plate body structure, the filling plate body structure has and bone Basin (70) connection the first connection end and with the second connection end being connected by the acetabular bone (80) cut down on the pelvis (70), institute Stating filling plate body structure is used to be filled in the gap between the pelvis (70) and the acetabular bone (80), described in cutting down Acetabular bone (80) supports and is fixed on the precalculated position of the pelvis (70).
2. acetabular bone filling prosthesis according to claim 1, it is characterised in that the filling plate body structure includes：
First connecting plate (10), is fixedly connected with the tangent plane of the pelvis (70)；
Second connecting plate (20), is fixedly connected with the tangent plane of the acetabular bone (80)；
Gripper shoe (30), is arranged between first connecting plate (10) and second connecting plate (20), first connection Plate (10) is supported simultaneously by the acetabular bone (80) that the gripper shoe (30) is connected cutting down with second connecting plate (20) It is fixed on the precalculated position of the pelvis (70).
3. acetabular bone filling prosthesis according to claim 2, it is characterised in that first connecting plate (10), described second Connecting plate (20) and the gripper shoe (30) are integrally formed.
4. acetabular bone filling prosthesis according to claim 2, it is characterised in that first connecting plate (10), described second Connecting plate (20) and the gripper shoe (30) constitute the plate body structure of bending.
5. acetabular bone filling prosthesis according to claim 2, it is characterised in that first connecting plate (10) with for The pelvis (70) tangent plane connection the first composition surface, second connecting plate (20) with for and the acetabular bone (80) Second composition surface of tangent plane connection, on first composition surface and second composition surface the first network is provided with.
6. acetabular bone filling prosthesis according to claim 5, it is characterised in that first connecting plate (10) with it is described The first internal face that first composition surface mutually deviates from, has on second connecting plate (20) and mutually deviates from second composition surface Second internal face, has threeth inwall adjacent with first internal face and second internal face on the gripper shoe (30) Face；
Wherein, first internal face and second internal face are relative, first internal face, second internal face and institute State and be provided with the second network on the 3rd internal face.
7. acetabular bone filling prosthesis according to claim 6, it is characterised in that first internal face, second inwall Plate body reinforcement (40) is provided with face and the 3rd internal face.
8. acetabular bone filling prosthesis according to claim 7, it is characterised in that first connecting plate (10) and described second Be provided with connecting plate (20) it is multiple put nail (50), be provided with ring on first internal face and second internal face Around the nail reinforcement (60) for putting nail (50).
9. acetabular bone filling prosthesis according to claim 8, it is characterised in that the plate body reinforcement (40) and the nail Reinforcement (60) is connected with each other and is integrally formed.
10. acetabular bone filling prosthesis according to claim 2, it is characterised in that first connecting plate (10) and described Be provided with two connecting plates (20) it is multiple put nail (50) for what is passed through for screw, the screw is located in described puts nail (50) so that first connecting plate (10) to be fixedly connected or by second connecting plate with the tangent plane of the pelvis (70) in (20) it is fixedly connected with the tangent plane of the acetabular bone (80).
11. acetabular bone filling prosthesis according to claim 2, it is characterised in that the shape of first connecting plate (10) with The mating shapes of pelvis (70) tangent plane, the shape of second connecting plate (20) and the shape of the tangent plane of the acetabular bone (80) Shape matches.
CN201611090016.1A 2016-11-30 2016-11-30 Acetabular bone filling prosthesis Active CN106580522B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108904104A (en) * 2018-07-17 2018-11-30 河南医工智能科技有限公司 It is a kind of based on 3D printing personalization acetabular bone and bone inner support prosthese and the surgical guide being used cooperatively with supporting prostheses and preparation method
CN112245074A (en) * 2020-09-10 2021-01-22 上海交通大学医学院附属第九人民医院 Jaw bone transplantation in-place guide plate
IT202100009176A1 (en) * 2021-04-13 2022-10-13 Adler Ortho S P A CUP WITH DIFFERENT FLEXIBILITY.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2710577Y (en) * 2004-07-29 2005-07-20 徐万鹏 Artificial pelvis
CN105326583A (en) * 2015-12-01 2016-02-17 北京大学人民医院 Ilium defect reconstructive prosthesis
CN206560487U (en) * 2016-11-30 2017-10-17 北京爱康宜诚医疗器材有限公司 Acetabular bone filling prosthesis

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2710577Y (en) * 2004-07-29 2005-07-20 徐万鹏 Artificial pelvis
CN105326583A (en) * 2015-12-01 2016-02-17 北京大学人民医院 Ilium defect reconstructive prosthesis
CN206560487U (en) * 2016-11-30 2017-10-17 北京爱康宜诚医疗器材有限公司 Acetabular bone filling prosthesis

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108904104A (en) * 2018-07-17 2018-11-30 河南医工智能科技有限公司 It is a kind of based on 3D printing personalization acetabular bone and bone inner support prosthese and the surgical guide being used cooperatively with supporting prostheses and preparation method
CN112245074A (en) * 2020-09-10 2021-01-22 上海交通大学医学院附属第九人民医院 Jaw bone transplantation in-place guide plate
IT202100009176A1 (en) * 2021-04-13 2022-10-13 Adler Ortho S P A CUP WITH DIFFERENT FLEXIBILITY.
WO2022218564A1 (en) * 2021-04-13 2022-10-20 Adler Ortho S.P.A. Acetabular cup with regions of differing flexibility

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