CN112618112B - Surface hip joint prosthesis for hip joint dysplasia - Google Patents
Surface hip joint prosthesis for hip joint dysplasia Download PDFInfo
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- CN112618112B CN112618112B CN202011355997.4A CN202011355997A CN112618112B CN 112618112 B CN112618112 B CN 112618112B CN 202011355997 A CN202011355997 A CN 202011355997A CN 112618112 B CN112618112 B CN 112618112B
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- prosthesis
- rotation
- acetabular
- hip joint
- ball head
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Classifications
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- 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
- 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
- A61F2002/30518—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements with possibility of relative movement between the prosthetic parts
- A61F2002/30528—Means for limiting said movement
-
- 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
- A61F2002/3483—Additional features having a convex shape, e.g. hemispherical heads
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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
The application relates to a surface hip joint prosthesis for hip joint dysplasia, which comprises an acetabular outer cup prosthesis and a femoral head prosthesis, wherein the acetabular outer cup is: the outer wall of the acetabular outer cup prosthesis is provided with a plurality of anti-rotation ridges, and the anti-rotation ridges are at least positioned at positions corresponding to ischium or pubis after the acetabular outer cup prosthesis is installed; femoral head prosthesis: comprises a handle post and a ball head; stem: the side wall is provided with a plurality of rotation stopping grooves, and the side wall of the handle post protrudes outwards or is concave inwards regularly or irregularly; ball head: one end of the handle column is connected to the center of the inner wall of the ball head, a plurality of anti-rotation grooves are formed in the inner wall of the ball head, and the inner part of the ball head protrudes outwards or inwards regularly. The application has the effect of reducing the rotation of the acetabular cup prosthesis.
Description
Technical Field
The application relates to the field of medical instruments, in particular to a surface hip joint prosthesis for hip joint dysplasia.
Background
A surface hip prosthesis is a surgical implant that is used to replace a diseased portion of a human hip joint. Is used for hip joint surface replacement surgery. The surface hip joint prosthesis mainly comprises an acetabular outer cup prosthesis and a femoral head prosthesis sleeved on the femoral head of a human body. The surface hip replacement compared with the traditional total hip replacement can effectively reduce complications and repair rate after the hip replacement operation, reserves a large amount of bone for the total hip surface replacement operation, and provides a large amount of bone stock for later repair.
With respect to the related art, the inventor considers that the existing surface hip joint acetabular cup prosthesis and the contact part of the femoral head prosthesis and bones are easy to rotate, and the prior fixation is unstable.
Disclosure of Invention
In order to be able to reduce the rotation of the prosthesis in the stage where the human skeleton is not tightly connected to the prosthesis, the application provides a surface hip joint prosthesis for hip joint dysplasia.
The application provides a surface hip joint prosthesis for hip joint dysplasia, which adopts the following technical scheme:
a surface hip joint prosthesis for hip dysplasia, comprising an acetabular cup prosthesis and a femoral head prosthesis, the acetabular cup: the outer wall of the acetabular outer cup prosthesis is provided with a plurality of anti-rotation ridges, and the anti-rotation ridges are at least positioned at positions corresponding to ischium or pubis after the acetabular outer cup prosthesis is installed; femoral head prosthesis: comprises a handle post and a ball head; stem: the side wall is provided with a plurality of rotation stopping grooves, and the side wall of the handle post protrudes outwards or is concave inwards regularly or irregularly; ball head: one end of the handle column is connected to the center of the inner wall of the ball head, a plurality of anti-rotation grooves are formed in the inner wall of the ball head, and the inner part of the ball head protrudes outwards or inwards regularly.
By adopting the technical scheme, when the acetabular cup prosthesis is used, the acetabular cup prosthesis is connected to the ischial and pubic bone positions, the ball head is positioned in the acetabular cup prosthesis to replace the femoral head, and the stem is inserted into the femur to connect the ball head with the femur of a human body; after the whole prosthesis is just replaced by a patient, the foreign body sensation is inevitably generated, the self adjusting action is more, the whole prosthesis just installed is easy to rotate or displace, meanwhile, the bones of the human body are not fully covered on the surface of the prosthesis to realize a better connection relationship, the anti-rotation ridge can be clamped in the bone of the ischium or pubis, the possibility that the acetabular cup rotates can be reduced immediately, the rotation stopping groove on the stem can enable the femoral head prosthesis to be connected with the femur of the human body more stably, the femoral head is stably connected to the femur by matching with the rotation preventing groove formed in the inner wall of the ball head, the possibility that the femoral head prosthesis rotates is reduced, and the possibility that the femoral head prosthesis or the acetabular cup prosthesis rotates after any rotation is reduced, the given relative motion relationship between the femoral head prosthesis and the acetabular cup changes to cause serious abrasion and loosening or even failure of the femoral head prosthesis is reduced.
Optionally, the handle post is the tapering setting, and the end that the handle post connects the bulb is thicker than the other end.
By adopting the technical scheme, the handle column with the taper can reduce the possibility of sinking of the femoral head prosthesis relative to the acetabular cup prosthesis after the femoral head prosthesis is used for a period of time, so that the femoral head prosthesis and the acetabular cup prosthesis can be stably connected, and the possibility of overall failure of the prosthesis is reduced.
Optionally, the anti-rotation ridges are two groups, each group comprising two groups, the two groups being located at positions corresponding to the ischium and the pubis after the acetabular outer cup prosthesis is installed.
Through adopting above-mentioned technical scheme, two components locate the anti-rotation ridge of ischial and pubic department can provide more anti-rotation effect, simultaneously with the skeleton make full use of acetabular cup prosthesis mounted position department, promoted acetabular cup prosthesis's stability in use.
Optionally, the anti-rotation ridge extends along the sidewall from an end face of the acetabular cup prosthesis and the height of the anti-rotation ridge gradually decreases.
Through adopting above-mentioned technical scheme, when installing the outer cup prosthesis of acetabulum, need cut the recess that holds anti-rotation ridge in advance on human skeleton, because the sphere lateral wall part of outer cup of acetabulum is to face inside the human body, so if the everywhere highly uniform of anti-rotation ridge, the operation operator just needs to spend more operating portion and carry out the skeleton in the position department that human ischium and pubis are deeper and repair, the operation is inconvenient and error appears more easily, and the scheme of description in this scheme can realize anti-rotation effect already, the recess that the required anti-rotation ridge of while gradually reducing height also more easily adapts to the recess that the operation operator formed after cutting normally on human skeleton.
Optionally, a connection platform is arranged on the acetabular cup prosthesis, a plurality of primary tightening screws are arranged on the connection platform, and the primary tightening screws extend back to the end face direction of the acetabular cup prosthesis.
By adopting the technical scheme, for patients with hip dysplasia, the acetabulum structure of the patients may be abnormal, the prior stable fixation of the acetabulum side cannot be carried out when the surface hip joint replacement operation is carried out, the use requirement cannot be met by the existing surface hip joint prosthesis, and the connecting platform and the initial tightening screw can play a good initial fixation role for the patients with the hip dysplasia.
Optionally, the primary screw is located at a position corresponding to an acetabular rim portion or a condylar bone wing portion after installation of the acetabular outer cup prosthesis.
By adopting the technical scheme, the connection platform is connected with the bones of the human body by adopting the initial tightening screw, so that the connection platform is not suitable for the positions where the nerves such as ischium and pubis are densely distributed or the important nerves are more, the initial tightening screw is used for auxiliary fixation of the acetabular cup prosthesis in the early stage, and meanwhile, the upper edge part of the acetabulum or the condylar bone wing part of the acetabulum can be reserved for patients with the dysplasia of the hip joint, so that the connection between the upper edge part of the acetabulum or the condylar bone wing part is enough to meet the requirement of the connection strength.
Optionally, the head parts of the three primary tightening screws are distributed in a triangular vertex shape.
By adopting the technical scheme, the primary tightening screws distributed at the three tips of the triangle can provide more stable supporting and limiting effects, and the possibility of rotation or displacement of the acetabular cup prosthesis is reduced.
Optionally, the sidewall of the stem has a surface roughness greater than ra1.6.
Through adopting above-mentioned technical scheme, can increase roughness through spouting coarse sand on the surface of handle post, the initial stability after the handle post implantation of being convenient for.
Optionally, the number of the rotation stopping grooves is two, and the rotation stopping grooves are symmetrically distributed on the side wall of the handle post.
Through above-mentioned technical scheme, after using a period, human skeleton can grow to fill up inside two rotation stopping grooves, and two rotation stopping grooves of symmetry setting can provide more stable effectual rotation stopping effect.
Optionally, the acetabular cup prosthesis is made of cobalt-chromium-molybdenum alloy, the surface of the acetabular cup prosthesis is coated with a titanium alloy coating, the titanium alloy coating is externally coated with a hydroxyapatite double coating, and the surface of the acetabular cup prosthesis is of a micropore structure; the surface roughness of the inner wall of the acetabular outer cup prosthesis and the outer wall of the ball head is less than Ra0.1.
By adopting the technical scheme, the surface coating microporous structure is beneficial to the rapid bone ingrowth, so that the human skeleton can be stably connected with the acetabular cup prosthesis as soon as possible; the highly polished surface with roughness less than Ra0.1 facilitates relative movement between the acetabular cup prosthesis and the femoral head prosthesis and reduces wear therebetween.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when the acetabular outer cup prosthesis is used, the acetabular outer cup prosthesis is connected to the ischial and pubic bone positions, the ball head is positioned in the acetabular outer cup prosthesis to replace the femoral head, and the stem is inserted into the femur to connect the ball head with the femur of a human body; after the whole prosthesis is replaced by a patient, the patient is difficult to avoid foreign body sensation, the self adjusting action is more, the whole prosthesis which is just installed is easy to rotate or displace, meanwhile, the bones of the human body are not fully covered on the surface of the prosthesis to realize a better connection relationship, the anti-rotation ridge can be clamped in the bones of the ischium or pubis, the possibility of rotation of the acetabular cup can be reduced immediately, the rotation stopping groove on the stem can enable the femoral head prosthesis to be connected with the femur of the human body more stably, the femoral head is stably connected to the femur by matching with the rotation preventing groove formed on the inner wall of the ball head, the possibility of rotation of the femoral head prosthesis is reduced, and the possibility of serious abrasion, looseness and failure of the femoral head prosthesis or the acetabular cup prosthesis caused by the change of a set relative motion relationship between the femoral head prosthesis and the acetabular cup after any rotation is reduced;
2. in patients with dysplasia of the hip joint, the acetabular structure of the patient may be abnormal, the prior stable fixation of the acetabular side cannot be performed when the surface hip joint replacement operation is performed, and the existing surface hip joint prosthesis cannot meet the use requirement, so that the connecting platform and the initial tightening screw can play a good initial fixing role for the patients with dysplasia of the acetabulum;
3. the handle column with the taper can reduce the possibility of sinking of the femoral head prosthesis relative to the acetabular cup prosthesis after the femoral head prosthesis is used for a period of time, so that the femoral head prosthesis and the acetabular cup prosthesis can be stably connected, and the possibility of overall failure of the prosthesis is reduced.
Drawings
Fig. 1 is an isometric view of an embodiment.
Reference numerals illustrate: 1. a femoral head prosthesis; 11. a stem; 111. a rotation stopping groove; 12. ball head; 2. an acetabular cup prosthesis; 21. an anti-rotation ridge; 22. an anti-rotation groove; 3. a connecting platform; 31. and (5) initially tightening the screw.
Detailed Description
The present application will be described in further detail with reference to the accompanying drawings.
The embodiment of the application discloses a surface hip joint prosthesis for hip joint dysplasia. Referring to fig. 1, comprising an acetabular cup prosthesis 2, a femoral head prosthesis 1 and a connecting platform 3. The acetabular cup prosthesis 2 is umbrella-shaped, the femoral head prosthesis 1 comprises a ball head 12 and a handle column 11, the ball head 12 is positioned inside the acetabular cup prosthesis 2 and can rotate freely when the acetabular cup prosthesis is used, the ball head 12 is umbrella-shaped, one end of the handle column 11 is fixedly arranged at the center of the inner wall of the ball head 12, and the other end of the handle column extends out of the ball head 12.
The inner wall of the ball head 12 is provided with a plurality of anti-rotation grooves 22, the inner wall of each anti-rotation groove 22 is in a cambered surface shape, the inner wall of each ball head 12 extends from the end face of the ball head 12 to the inside of the ball head 12, the inner wall of the ball head 12 between two adjacent anti-rotation grooves 22 is in a plane shape, the joint of the femur of a human body is realized through the inside of the uneven ball head 12, the possibility that the ball head 12 rotates when the femoral head prosthesis 1 is just installed on the femur of the human body is provided, and after the internal space of the ball head 12 is fully grown after a period of use, a more stable rotation stopping effect is obtained.
The stem 11 is tapered, the thicker end of the stem 11 in this embodiment is connected inside the ball head 12, and the taper of the stem 11 is 2 ° (may be an angle required by other patients such as 1 °, 3 °). Two rotation stopping grooves 111 are formed in the side wall of the handle post 11, and the two rotation stopping grooves 111 are symmetrically distributed on the handle post 11. The rotation stopping groove 111 extends from the end of the stem 11 connected to the ball 12 to the other end, and since the stem 11 is tapered, the groove width of the rotation stopping groove 111 is gradually reduced.
The lateral wall of the acetabular cup prosthesis 2 is fixedly connected with a connecting platform 3, the connecting platform 3 is in threaded connection with three primary tightening screws 31, the heads of the three primary tightening screws 31 are distributed in a triangular shape in a three-pointed shape, and the primary tightening screws 31 extend towards the port direction of the acetabular cup prosthesis 2 back to be connected with the upper edge part or the condylar bone wing part of the acetabulum to realize the fixation of the acetabular cup prosthesis 2.
Four anti-rotation ridges 21 are integrally formed on the acetabular cup prosthesis 2, the four anti-rotation ridges 21 are located on the opposite sides of the connecting platform 3, one group of two anti-rotation ridges 21 are located on two sides of the connecting platform 3, and the two groups of anti-rotation ridges 21 are respectively used for being clamped on ischium and pubis to provide an anti-rotation effect for the acetabular cup prosthesis 2. The anti-rotation ridge 21 extends from the port of the acetabular cup, along the outer wall curved profile of the acetabular cup, towards the center of the outer wall of the acetabular cup, the height of the anti-rotation ridge 21 gradually decreasing and eventually becoming 0 on the outer wall of the acetabular cup prosthesis 2.
The embodiment of the application provides a surface hip joint prosthesis for hip joint dysplasia, which is implemented according to the following principle: when the acetabular cup prosthesis is used, the acetabular cup prosthesis 2 is connected to the positions of ischium and pubis, the ball head 12 is positioned in the acetabular cup prosthesis 2 to replace a femoral head, and the stem 11 is inserted into the femur to connect the ball head 12 with the femur of a human body; after the whole prosthesis is just replaced by a patient, the patient can not avoid foreign body feeling, the self adjusting action is more, the whole prosthesis just installed is easy to rotate or displace, meanwhile, the bones of the human body are not fully covered on the surface of the prosthesis to realize better connection, the anti-rotation ridge 21 can be clamped in the bone of the ischium or pubis, the possibility of rotation of the acetabular cup can be reduced even if the bone is replaced, and the handle can also provide effective limiting function by the initial tightening screw 31. The rotation-stopping groove 111 on the post can enable the femoral head prosthesis 1 to be connected with the femur of a human body more stably, and the rotation-preventing groove 22 formed on the inner wall of the ball head 12 is matched with the femoral head prosthesis, so that the femoral head prosthesis 1 can be connected to the femur stably, the possibility of rotation of the femoral head prosthesis 1 is reduced, and the possibility of serious abrasion, looseness and even failure of the femoral head prosthesis 1 or the acetabular cup prosthesis 2 caused by the change of a set relative motion relation between the femoral head prosthesis 1 and the acetabular cup prosthesis 2 after any rotation is reduced.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (9)
1. A surface hip joint prosthesis for hip dysplasia comprising an acetabular cup prosthesis (2) and a femoral head prosthesis (1), characterized in that:
acetabular cup: the outer wall of the acetabular outer cup prosthesis (2) is provided with a plurality of anti-rotation ridges (21), and the anti-rotation ridges (21) are at least positioned at positions corresponding to ischium or pubis after the acetabular outer cup prosthesis (2) is installed;
femoral head prosthesis (1): comprises a handle column (11) and a ball head (12);
stem (11): a plurality of rotation stopping grooves (111) are formed in the side wall, and the side wall of the handle column (11) protrudes outwards or inwards regularly or irregularly;
ball head (12): one end of the handle column (11) is connected to the center of the inner wall of the ball head (12), a plurality of anti-rotation grooves (22) are formed in the inner wall of the ball head (12), and the inner part of the ball head (12) protrudes outwards or inwards in a regular or irregular manner;
the acetabular cup prosthesis (2) is provided with a connecting platform (3), the connecting platform (3) is provided with a plurality of primary tightening screws (31), and the primary tightening screws (31) extend back to the end face direction of the acetabular cup prosthesis (2).
2. The surface hip joint prosthesis for hip dysplasia according to claim 1, characterized in that: the handle column (11) is arranged in a taper manner, and the end part of the handle column (11) connected with the ball head (12) is thicker than the other end.
3. The surface hip joint prosthesis for hip dysplasia according to claim 1, characterized in that: the anti-rotation ridges (21) are arranged in two groups, each group comprises two groups, and the two groups are respectively positioned at positions corresponding to ischium and pubis after the acetabular outer cup prosthesis (2) is installed.
4. The surface hip joint prosthesis for hip dysplasia according to claim 1, characterized in that: the anti-rotation ridge (21) extends along the sidewall from the end face of the acetabular cup prosthesis (2) and the height of the anti-rotation ridge (21) gradually decreases.
5. The surface hip joint prosthesis for hip dysplasia according to claim 1, characterized in that: the initial tightening screw (31) is positioned at a position corresponding to the upper edge part of the acetabulum or the wing part of the condylar bone after the acetabular outer cup prosthesis (2) is installed.
6. The surface hip prosthesis for hip dysplasia according to claim 1 or 5, characterized in that: the number of the initial tightening screws (31) is three, and the heads of the three initial tightening screws (31) are distributed in a triangular vertex shape.
7. The surface hip joint prosthesis for hip dysplasia according to claim 1, characterized in that: the surface roughness of the side wall of the handle post (11) is greater than Ra1.6.
8. The surface hip joint prosthesis for hip dysplasia according to claim 1, characterized in that: the number of the rotation stopping grooves (111) is two, and the rotation stopping grooves are symmetrically distributed on the side wall of the handle post (11).
9. The surface hip joint prosthesis for hip dysplasia according to claim 1, characterized in that: the acetabulum outer cup prosthesis (2) is made of cobalt-chromium-molybdenum alloy, the surface of the acetabulum outer cup prosthesis is coated with a titanium alloy coating, the titanium alloy coating is externally coated with a hydroxyapatite double coating, and the surface of a micropore structure is formed; the surface roughness of the inner wall of the acetabular outer cup prosthesis (2) and the outer wall of the ball head (12) is less than Ra0.1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011355997.4A CN112618112B (en) | 2020-11-27 | 2020-11-27 | Surface hip joint prosthesis for hip joint dysplasia |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011355997.4A CN112618112B (en) | 2020-11-27 | 2020-11-27 | Surface hip joint prosthesis for hip joint dysplasia |
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| Publication Number | Publication Date |
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| CN112618112A CN112618112A (en) | 2021-04-09 |
| CN112618112B true CN112618112B (en) | 2023-09-19 |
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| CN202011355997.4A Active CN112618112B (en) | 2020-11-27 | 2020-11-27 | Surface hip joint prosthesis for hip joint dysplasia |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202096312U (en) * | 2011-03-18 | 2012-01-04 | 北京百慕航材高科技股份有限公司 | Femur proximal-end hip joint prosthesis |
| CN203280542U (en) * | 2013-04-26 | 2013-11-13 | 北京力达康科技有限公司 | Ionic-spray micropore tantalum coating hip joint prostheses |
| CN103705317A (en) * | 2013-12-27 | 2014-04-09 | 北京爱康宜诚医疗器材股份有限公司 | Matched stack type acetabulum prosthesis |
| CN204600802U (en) * | 2015-05-07 | 2015-09-02 | 浙江科惠医疗器械股份有限公司 | A kind of acetabular cup being shaped with convex ridge fixed structure |
| WO2019171138A1 (en) * | 2018-03-07 | 2019-09-12 | Cossington Limited | Acetabular spacer device comprising a pharmaceutical substance |
| CN110393611A (en) * | 2019-07-11 | 2019-11-01 | 北京市春立正达医疗器械股份有限公司 | Surface hip joint prosthese |
| CN211658429U (en) * | 2020-01-14 | 2020-10-13 | 上海科太迈迪医疗器械有限公司 | Acetabular cup test mold with anti-rotation fixing wings |
-
2020
- 2020-11-27 CN CN202011355997.4A patent/CN112618112B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202096312U (en) * | 2011-03-18 | 2012-01-04 | 北京百慕航材高科技股份有限公司 | Femur proximal-end hip joint prosthesis |
| CN203280542U (en) * | 2013-04-26 | 2013-11-13 | 北京力达康科技有限公司 | Ionic-spray micropore tantalum coating hip joint prostheses |
| CN103705317A (en) * | 2013-12-27 | 2014-04-09 | 北京爱康宜诚医疗器材股份有限公司 | Matched stack type acetabulum prosthesis |
| CN204600802U (en) * | 2015-05-07 | 2015-09-02 | 浙江科惠医疗器械股份有限公司 | A kind of acetabular cup being shaped with convex ridge fixed structure |
| WO2019171138A1 (en) * | 2018-03-07 | 2019-09-12 | Cossington Limited | Acetabular spacer device comprising a pharmaceutical substance |
| CN110393611A (en) * | 2019-07-11 | 2019-11-01 | 北京市春立正达医疗器械股份有限公司 | Surface hip joint prosthese |
| CN211658429U (en) * | 2020-01-14 | 2020-10-13 | 上海科太迈迪医疗器械有限公司 | Acetabular cup test mold with anti-rotation fixing wings |
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| CN112618112A (en) | 2021-04-09 |
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