CN202288536U - Rotary hinge type artificial knee joint connecting mandrel - Google Patents
Rotary hinge type artificial knee joint connecting mandrel Download PDFInfo
- Publication number
- CN202288536U CN202288536U CN 201120225985 CN201120225985U CN202288536U CN 202288536 U CN202288536 U CN 202288536U CN 201120225985 CN201120225985 CN 201120225985 CN 201120225985 U CN201120225985 U CN 201120225985U CN 202288536 U CN202288536 U CN 202288536U
- Authority
- CN
- China
- Prior art keywords
- knee joint
- artificial knee
- rotary hinge
- prosthesis
- mandrel
- 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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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
- A61F2/38—Joints for elbows or knees
-
- 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)
- Physical Education & Sports Medicine (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 utility model relates to a rotary hinge type artificial knee joint connecting mandrel, which comprises a connecting body, a hinge hole and a cylinder body, and is suitable for being used for connecting a femoral condyle prosthesis, a femoral platform and a femoral gasket when a rotary hinge artificial knee joint prosthesis is assembled. The rotary hinge type artificial knee joint connecting mandrel adopts the crutch-shaped design, the bone reconstruction and the limb force line recovery are fully considered, the prosthesis-bone cement-bone tissue interface stress is reduced, a straight and square part of the connecting body can be assembled with the femoral gaskets with different thicknesses, and the applicability to the clinical surgery is enhanced.
Description
Technical field
The utility model relates to a kind of rotary gemel formula knee-joint prosthesis and connect mandrel, particularly a kind of when assembly rotary gemel knee-joint prosthesis, be used to assemble the coupling assembling of condyle of femur prosthese, tibial plateau and tibial insert.
Background technology
Knee joint is the predilection site of bone malignant tumour, mainly is to take amputation in the past.Along with extensively the carrying out of new adjuvant chemotherapy, most knee malignant tumor can be protected the limb treatment in recent years, and wherein the artificial prosthesis substitution becomes main guarantor's limb method.Be different from conventional total knee arthroplasty; For the knee joint malignant tumor; Must carry out soft tissue excision widely clinically, cause kneed stabilising arrangement such as disappearances such as both sides side para-ligament, front and back ligamentaum cruciatum, add that tumor section resected bone causes a large amount of bones damaged; Kneed stability is seriously lost, so the artificial prosthesis that requires to implant possesses strict self stability.The knee hinge joint prosthese need not soft tissue Stabilization is provided with its firm restrictive design, is applied at first in guarantor's limb technology of knee joint peripheral malignant bone tumor.But this type of articular prosthesis is only limited to the single plane activity, causes that very easily prosthese-bone cement-osseous tissue interface's stress abnormality concentrates, in, complication rates such as prosthetic loosening at a specified future date, infection are high.In recent years, on the knee hinge joint basis, design rotary gemel formula knee-joint prosthesis, increased axial rotation; Reduced the motion restriction; Can transmit pressure load through its hinge and polyethylene tibial plateau simultaneously, not only can improve the mechanics effect of extensor apparatus, and can reduce prosthese-bone cement-bone interface stress; The particulate generation that reduces wear reduces aseptic loosening.
Though rotary gemel formula artificial knee joint is the axial rotation of tolerable appropriateness more; Yet can a range of activity compare with natural knee joint institute and to also have certain gap; Therefore how can further improve the design of rotary gemel formula artificial knee joint prosthesis; Satisfy the clinical practice needs better, also become the central task of current researcher.
The utility model content
The purpose of this utility model provides a kind of forms of motion that guarantees assembly rotary gemel formula artificial knee joint prosthesis can be near normal motion of knee joint form, simultaneously can be according to clinical demand to adapt to the tibial insert of different-thickness.
For realizing above-mentioned purpose, this utility model is taked following design:
A kind of rotary gemel formula artificial knee joint connects mandrel, includes connector, pan and cylinder three parts; Wherein, the pan on the connector is connected through bearing pin with the condyle of femur prosthese, and the Nogata part matches with tibial insert; The corresponding connecting hole with tibial plateau of cylinder connects fixing, it is characterized in that the rotary gemel formula artificial knee joint after condyle of femur prosthese and tibial insert, the tibial plateau assembly can recover knee joint function to greatest extent.
The utility model has the advantages that:
1, this utility model rotary gemel formula artificial knee joint connects mandrel; After adopting above design, nodel line back upper place, hinge axis Pianguan County, rotating shaft and joint line are close; Having taken into full account the function of joint reconstruction and the limbs line of force recovers; Thereby can reduce prosthese-bone cement-bone interface stress effectively, the particulate generation that reduces wear reduces aseptic loosening rate.
2, this utility model rotary gemel formula artificial knee joint connects mandrel, and it turns the design of shape cuboid when guaranteeing prosthese motion and mechanical characteristic, can enlarge the excursion of tibial insert thickness, has strengthened the compatibility and the interchangeability of borrowed structure.
Below in conjunction with the accompanying drawing and the specific embodiment this utility model is explained further details, this embodiment only is this utility model preferred forms, is not the qualification to this utility model.
Description of drawings
Fig. 1 is the structural representation that this utility model rotary gemel formula artificial knee joint connects mandrel
Fig. 2 is the embodiment sketch map 1 that this utility model rotary gemel formula artificial knee joint connects mandrel
Fig. 3 is the embodiment sketch map 2 that this utility model rotary gemel formula artificial knee joint connects mandrel
The specific embodiment
Below in conjunction with accompanying drawing and preferred embodiment, the rotary gemel formula artificial knee joint that proposes according to this utility model is connected mandrel, its specific embodiment, structure, characteristic and effect thereof, specify as after.
Consulting Fig. 1, shown in Figure 2, is this utility model structure and use illustration intention.A kind of rotary gemel formula artificial knee joint connects mandrel; Include a connector 1; This connector 1 is for turning the design of shape cuboid; Pan 2 is connected through bearing pin 5 with condyle of femur prosthese 4, and the Nogata part of connector 1 matches with tibial insert 6, and cylinder 3 is fixed on the tibial plateau 7 after assembling with lining 6; Wherein, the definite of pan 2 centers should satisfy cylinder 3 center of rotation and the corresponding to primary condition of the limbs line of force.
Consulting shown in Figure 3ly, is another example structure sketch map of this utility model.Second instance of this utility model is the tibial insert 6 of assembling different-thickness, and the excursion of the minimum thickness of tibial insert 6 is 8～20mm.For the tibial insert 6 of different-thickness, be connected the mandrel relative position with rotary gemel formula artificial knee joint and immobilize in its upper surface during articular prosthesis in assembling, the assembling of other assembly and a last embodiment are identical.
This utility model rotary gemel formula artificial knee joint connects mandrel; Has the design of the shape of turning cuboid on the described connector 1; When assembling, novel rotary gemel formula artificial knee joint connection mandrel and condyle of femur prosthese 4 are connected to form hinge through bearing pin 5, realize the flexion and extension of knee-joint prosthesis.Tibial insert 6 is fixed on the tibial plateau 7 be connected the mandrel assembling with rotary gemel formula artificial knee joint after; Be accompanied by the axial rotation of condyle of femur prosthese 4 around cylinder 3 central shafts, rotary gemel formula artificial knee joint connects mandrel and drives the interior outward turning campaign that tibial insert 6 is realized knee-joint prosthesis.
This utility model rotary gemel formula artificial knee joint connects mandrel; Has the design of the shape of turning cuboid on the described connector; Satisfying under the condition that cylinder 3 rotary middle spindles and the limbs line of force match, 2 centers, design of hinges hole can make nodel line rear, hinge axis Pianguan County; And rotating shaft is consistent with joint line, and the model of action ability that makes prosthese is near normal kneed model of action.
This utility model rotary gemel formula artificial knee joint connects mandrel; Has the design of the shape of turning cuboid on the described connector; With tibial insert 6 assemblings the time; Can require the tibial insert of design different-thickness according to actual clinical, and not change the biomechanics situation of borrowed structure, have good interchangeability.
Claims (2)
1. a rotary gemel formula artificial knee joint connects mandrel; It is characterized in that; It comprises connector (1), pan (2), cylinder (3); Pan (2) is connected with condyle of femur prosthese (4), connector (1) Nogata part and tibial insert (6) assembly, and cylinder (3) is fixed on the tibial plateau (7).
2. rotary gemel formula artificial knee joint according to claim 1 connects mandrel, it is characterized in that, connector adopts and turns the shape design, under according to cylinder (3) the center of rotation condition identical with the limbs line of force, and center, design of hinges hole (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120225985 CN202288536U (en) | 2011-06-30 | 2011-06-30 | Rotary hinge type artificial knee joint connecting mandrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120225985 CN202288536U (en) | 2011-06-30 | 2011-06-30 | Rotary hinge type artificial knee joint connecting mandrel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202288536U true CN202288536U (en) | 2012-07-04 |
Family
ID=46357535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120225985 Expired - Fee Related CN202288536U (en) | 2011-06-30 | 2011-06-30 | Rotary hinge type artificial knee joint connecting mandrel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202288536U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104287873A (en) * | 2013-07-15 | 2015-01-21 | 贺利氏医疗有限公司 | Knee spacer system with adjustable spacer |
| CN106794066A (en) * | 2014-09-23 | 2017-05-31 | 泰克里斯公司 | For kneed restricted type prosthese |
-
2011
- 2011-06-30 CN CN 201120225985 patent/CN202288536U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104287873A (en) * | 2013-07-15 | 2015-01-21 | 贺利氏医疗有限公司 | Knee spacer system with adjustable spacer |
| CN106794066A (en) * | 2014-09-23 | 2017-05-31 | 泰克里斯公司 | For kneed restricted type prosthese |
| CN106794066B (en) * | 2014-09-23 | 2019-03-08 | 泰克里斯公司 | For kneed restricted type prosthese |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20150630 |
|
| EXPY | Termination of patent right or utility model |