CN103598932B - A kind of combined type artificial femur stage casing prosthese - Google Patents
A kind of combined type artificial femur stage casing prosthese Download PDFInfo
- Publication number
- CN103598932B CN103598932B CN201310494076.XA CN201310494076A CN103598932B CN 103598932 B CN103598932 B CN 103598932B CN 201310494076 A CN201310494076 A CN 201310494076A CN 103598932 B CN103598932 B CN 103598932B
- Authority
- CN
- China
- Prior art keywords
- hole
- shank
- side plate
- prosthese
- stage casing
- 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.)
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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
- A61F2/28—Bones
-
- 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
- A61F2/28—Bones
- A61F2002/2825—Femur
-
- 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
Abstract
The present invention relates to a kind of combined type artificial femur stage casing prosthese, by a femoral shaft component, two the femoral stem components being assemblied in these femoral shaft component two ends, and the side plate on bolt femoral stem component is formed; Femoral stem component has coaxially establishes columned shank, and shank is formed with radially staggered first through hole, the second through hole and third through-hole successively by head to root; The part that side plate extends described second end is parallel to described shank, and and between corresponding shank, form a gap just can inserted for the wall of human femur under loading body; Side plate offers fourth hole, and this fourth hole is coaxially arranged with the third through-hole on corresponding shank, and a common assembling side plate screw.Its advantage is: this borrowed structure is reasonable in design, is convenient to preparation and operation technique, has good withdrawal resistance and anti-rotational force, and the risk of prosthetic loosening and sinking reduces, and is applicable to the reconstruction being applied to femur stage casing Cranial defect.
Description
Technical field
The invention discloses a kind of artificial femoral prosthesis for rebuilding femur stage casing Cranial defect, being specifically related to a kind of combined type artificial femur stage casing prosthese be made up of femoral shaft component, femoral stem component and side plate.
Background technology
Under normal circumstances, femur stage casing Cranial defect bone is all inserted by bone cement in smooth medullary cavity to obtain a smooth straight barrel as wanted implanting prosthetic, and stick to prosthese and medullary cavity inwall about relying on it, or the interlocking carrying out the far and near two ends of prosthese reaches fixing object.Analyze from cross section body, this straight barrel it can only complete X and Y both direction location adhere to, and the reliable detent force of interlocking neither one at the far and near two ends of prosthese, and the reliable detent force of inter-locking screw neither one at the far and near two ends of prosthese, the faying face of prosthesis handle and bone cement interface (prosthese both sides femur end) is caused to have obvious defect thus, withdrawal resistance and anti-rotation strength weak, easily cause between prosthesis handle and pulp cavity inwall and occur to loosen, thus cause prosthetic replacement to lose efficacy.And the fixing mode that first interlocking power will depend on prosthesis handle and prosthese both sides femur end will be obtained, adopt cement reaction can't ignore the shape (trend of bone cement) of contact surface when obtaining maximum contact face, current bone-cement type prosthese cannot make bone cement between medullary cavity and prosthese, form the three axis force of reliably X, Y, a Z to embody its strong withdrawal resistance and anti-rotational force.How to break through conventional means, how to adopt not only ideal but also reliably advanced way be used as Present clinical operation and become a urgent direction.
Summary of the invention
The object of the embodiment of the present invention is the shortcoming for prior art, a kind of combined type artificial femur stage casing prosthese is proposed, this borrowed structure is reasonable in design, be convenient to preparation and operation technique, there is good withdrawal resistance and anti-rotational force, the risk of prosthetic loosening and sinking reduces, and is applicable to the reconstruction being applied to femur stage casing Cranial defect.
In order to reach foregoing invention object, a kind of combined type artificial femur stage casing prosthese that the present invention proposes, is achieved through the following technical solutions:
A kind of combined type artificial femur stage casing prosthese, is characterized in that comprising:
A columned femoral shaft component, its both ends of the surface are respectively provided with a word groove, and the bottom of a described word groove is provided with coaxial blind hole;
Two femoral stem components, described femoral stem component has columned basilar part, and the first end of this basilar part forms the boss with a described word groove male-female engagement, and its second end coaxially establishes columned shank; The end face of described boss is coaxially provided with the cylinder inserted in described blind hole; Described shank is formed with radially staggered first through hole, the second through hole and third through-hole successively by head to root, in described first through hole and the second through hole, is equipped with shank screw; Third through-hole on two described femoral stem components parallels; On the side face of described basilar part, also indent is formed with open slot;
Two side plates, to be inlaid in respectively in described open slot and with basilar part bolt, the part that described side plate extends described second end is parallel to described shank, and and forms a gap that the wall of human femur under loading body just can be supplied to insert between corresponding shank; Described side plate offers fourth hole, and this fourth hole is coaxially arranged with the third through-hole on corresponding shank, and a common assembling side plate screw.
Preferably, along the axis of described basilar part, bottom described open slot, be provided with at least two screws; On described side plate, corresponding described screw offers through hole, and by side plate screw and described basilar part bolt.
Preferably, the axial line distance of described first through hole, the second through hole and third through-hole is between 1-1.5 centimetre.
Preferably, the spacing between described shank and side plate is no more than 0.5 centimetre.
Preferably, the shape of described blind hole is Rotary-table shape, described cylinder with described blind hole shape adaptation; The head of described shank is hemisphere shape.
Preferably, the diameter of described shank is 50mm.
Preferably, the length of a described word groove is 16mm, and width is 8mm.
Preferably, described side plate thickness is 2.5mm, and length is 47mm.
Preferably, the diameter of described side plate screw and shank screw is 4.5mm.
Preferably, described first through hole, the second through hole and third through-hole are equipped with female thread.
Compared with prior art, the present invention, owing to have employed technique scheme, has the following advantages:
1. this Combined thigh bone stage casing prosthese is primarily of femoral shaft component, femoral stem component and side plate composition composition, and structure is simple, and cost is low.
2. this Combined thigh bone stage casing prosthese, the data of CT scan can be rebuild according to operation in patients front three dimension, select side plate screw and the femoral prosthesis shank screw of the femoral prosthesis handle member of corresponding size, cadre's component and corresponding length, reach individuation customization, and simple to operate.
3. fixing by shank open slot and side plate of this Combined thigh bone stage casing prosthese, for the implantation of the far and near two end side panels screw of prosthese and femoral prosthesis shank screw provides reference, raising procedure efficiency.
4. this Combined thigh bone stage casing prosthese is cementless, and the three-dimensional inter-locking screw in far and near many pieces, the two ends of prosthese then obviously can strengthen fixing of prosthesis handle and prosthese both sides femur end, and the ability of anti-prosthetic loosening and sinking is improved.
Accompanying drawing explanation
By the description carried out its exemplary embodiment below in conjunction with accompanying drawing, the above-mentioned feature and advantage of the present invention will become apparent and easy understand.
Fig. 1 is the overall structure schematic diagram of embodiment of the present invention Combined thigh bone stage casing prosthese;
Fig. 2 is embodiment of the present invention femoral shaft element structure schematic diagram;
Fig. 3 is embodiment of the present invention femoral stem element structure schematic diagram;
Fig. 4 is embodiment of the present invention lateral plate structure schematic diagram; .
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail, so that the understanding of technical staff of the same trade:
As Figure 1-4, label represents respectively:
Femoral shaft component 1, blind hole 11, word groove 12, femoral stem component 2, basilar part 21, open slot 211, screw 2111, boss 22, cylinder 221, shank 23, first through hole 231, second through hole 232, third through-hole 233, side plate 3, pedestal 31, screw 311, plate body 32, fourth hole 321, side plate screw 5, shank screw 6.
Total inventive concept of the present invention is, on the basis of existing femur stage casing prosthese, increases prosthese side baffle, thus arrival prosthesis handle and the firm of prosthese both sides femur end are fixed.Concrete technical scheme, Combined thigh bone stage casing prosthese is formed primarily of with lower member:
Femoral shaft component
Femoral shaft component 1 quantity is one, and it is roughly in cylindrical shape.The section configuration its both ends of the surface being respectively provided with word groove 12, word groove 12 is rectangle.The bottom of this word groove 12 is provided with blind hole 11, the Rotary-table shape of blind hole 11 in wealthy mouth, and coaxial with femoral shaft component 1.
Femoral stem component
The quantity of femoral stem component 2 is two.Femoral stem component 2 has columned basilar part 21.One end of this basilar part 21 forms the boss 22 with word groove 12 male-female engagement, and be simplified characterization, the one end with boss 22 be referred to as the first end of basilar part 21 herein, the other end of boss 22 is then referred to as the second end of basilar part 21 relatively.Boss 22 can be considered it is that the outer peripheral face of basilar part 21 first end symmetry is cut two parallel planes, makes it can embed in a word groove 12.On the end face of boss 22, be provided with a round table-like cylinder 221, this cylinder 221 and blind hole 11 shape adaptation, and coaxially arrange with basilar part 21, the object that cylinder 221 is set to cylindrical shape is that it is easy to operate to be convenient to when performing the operation, improves procedure efficiency.When assembling, the boss correspondence of two femoral stem components 2 is inserted in a word groove 12 at femoral shaft component 1 two ends, and cylinder 221 inserts in blind hole 11, gets final product complete operation.Ensure that the coordinating of cylinder 221 and blind hole 11 that femoral stem component 2 and femoral shaft component 1 can not relative tilts, the male-female engagement of a word groove 12 and boss 22 then ensure that femoral stem component 2 and femoral shaft component 1 can not relatively rotate.
Second end of basilar part 21 is convexly equipped with a shank 23, shank 23 roughly in basilar part 21 coaxial arrange cylindric, its head (i.e. end) is hemisphere shape.Shank 23 is formed three through holes, by its head, it is followed successively by the first through hole 231, second through hole 232 and third through-hole 233 to root.First through hole 231, second through hole 232 and third through-hole 233 equal diameters, the radial direction all along shank 23 is arranged, and the arrangement that three is interlaced.When femoral stem component 2 and femoral shaft component 1 assemble complete, two third through-holes 233 on two femoral stem components 2 are parallel to each other.First through hole 231, second through hole 232 and third through-hole 233 are screw, and the axial line distance of three is between 1-1.5 centimetre.
In addition, on the side face of basilar part 21, also indent is formed with open slot 211, and the length direction of open slot 211 is the axis of basilar part 21, and open slot 211 has opening on the second end of basilar part 21.The bottom of open slot 211 is provided with two screws 2111, and these two screws 2111 are along the axis of basilar part 21.
Side plate
The quantity of side plate 3 is similarly two, and side plate 3 is made up of pedestal 31 and plate body 32, and pedestal 31 and plate body 32 are structure as a whole.Pedestal 31 correspondence is inlaid in described open slot 211, and on it, the screw 2111 of corresponding open slot 211 offers two screws 311, and by side plate screw 5 and basilar part 21 bolt.Plate body 32 extends the second end of pedestal 31, and its bearing of trend is the axis of basilar part 21, that is to say that being parallel to shank 23 is arranged.A gap just can inserted for the wall of human femur under loading body is formed between the shank 23 of plate body 32 and correspondence.Preferably, the spacing between shank 23 and plate body 32 is no more than 0.5 centimetre.
Plate body 32 offers fourth hole 321, this fourth hole 321 is coaxially arranged with the third through-hole 233 on corresponding shank, and a common assembling side plate screw 5.
In clinical practice, because the size of patient femur there are differences, need the data of rebuilding CT scan according to operation in patients front three dimension, select side plate screw 5 and the shank screw 6 of the femoral shaft component 1 of corresponding size, femoral stem component 2 and corresponding length.Therefore, for realizing modularized design, the size of the connecting interface of femoral shaft component 1, femoral stem component is unified, and side plate 3 size simultaneously outside bone is unified, and in a preferred embodiment, the size Selection of these interfaces is as follows:
The length of one word groove 12 is 16mm, and width is 8mm.
Side plate 3 thickness is 2.5mm, and length is 47mm.
Side plate screw 5 diameter is 4.5mm, and designs different length with for subsequent use.
Shank screw 6 diameter is 4.5mm, and designs different length with for subsequent use.
Adopt the combined type artificial femoral prosthesis of this structure that stress distribution can be made more to disperse, distribution is more reasonable, more close to physiological status, reduce artificial prosthesis local stress too high, and life-time service causes the risk of fracture, extend the service life of artificial prosthesis, postpone and overhaul the time; Can also prevent femoral prosthesis shank assembly from rotating simultaneously, effectively prevent artificial prosthesis from loosening and sink.
By embodiment, invention intention of the present invention and embodiment are described in detail above; but one of ordinary skill in the art of the present invention are appreciated that; the above embodiment of the present invention is only one of the preferred embodiments of the present invention; for length restriction; here can not all embodiments of particularize; any enforcement that can embody the claims in the present invention technical scheme, all in protection scope of the present invention.
It should be noted that; above content is in conjunction with concrete embodiment further description made for the present invention; can not assert that the specific embodiment of the present invention is only limitted to this; under the guidance of above-described embodiment; those skilled in the art can carry out various improvement and distortion on the basis of above-described embodiment, and these improve or distortion drops in protection scope of the present invention.
Claims (6)
1. a combined type artificial femur stage casing prosthese, is characterized in that comprising:
A columned femoral shaft component, its both ends of the surface are respectively provided with a word groove, and the bottom of a described word groove is provided with the blind hole with femoral shaft component coaxial;
Two femoral stem components, described femoral stem component has columned basilar part, and the first end of this basilar part forms the boss with a described word groove male-female engagement, and this basilar part second end coaxially establishes columned shank; The end face of described boss is coaxially provided with basilar part the cylinder inserted in described blind hole; Described shank is formed with radially staggered first through hole, the second through hole and third through-hole successively by head to root, the axial line distance of described first through hole, the second through hole and third through-hole, between 1-1.5 centimetre, is equipped with shank screw in described first through hole and the second through hole; Third through-hole on two described femoral stem components parallels; On the side face of described basilar part, also indent is formed with open slot;
Two side plates, to be inlaid in respectively in described open slot and with basilar part bolt, the part that described side plate extends described second end is parallel to described shank, and and forms a gap that the wall of human femur under loading body just can be supplied to insert between corresponding shank; Described side plate offers fourth hole, and this fourth hole is coaxially arranged with the third through-hole on corresponding shank, and a common assembling respective side plate bolt;
Along the axis of described basilar part, bottom described open slot, be provided with at least two screws; On described side plate, corresponding described screw offers through hole, and by respective side plate bolt and described basilar part bolt;
Spacing between described shank and side plate is no more than 0.5 centimetre;
The shape of described blind hole is Rotary-table shape, described cylinder with described blind hole shape adaptation; The head of described shank is hemisphere shape.
2. a kind of combined type artificial femur stage casing according to claim 1 prosthese, is characterized in that: the diameter of described shank is 50mm.
3. a kind of combined type artificial femur stage casing prosthese according to claim 1-2 any one, is characterized in that: the length of a described word groove is 16mm, and width is 8mm.
4. a kind of combined type artificial femur stage casing according to claim 3 prosthese, it is characterized in that: described side plate thickness is 2.5mm, length is 47mm.
5. a kind of combined type artificial femur stage casing according to claim 4 prosthese, is characterized in that: the diameter of described side plate screw and shank screw is 4.5mm.
6. a kind of combined type artificial femur stage casing according to claim 5 prosthese, is characterized in that: described first through hole, the second through hole and third through-hole are equipped with female thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310494076.XA CN103598932B (en) | 2013-10-21 | 2013-10-21 | A kind of combined type artificial femur stage casing prosthese |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310494076.XA CN103598932B (en) | 2013-10-21 | 2013-10-21 | A kind of combined type artificial femur stage casing prosthese |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103598932A CN103598932A (en) | 2014-02-26 |
| CN103598932B true CN103598932B (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310494076.XA Expired - Fee Related CN103598932B (en) | 2013-10-21 | 2013-10-21 | A kind of combined type artificial femur stage casing prosthese |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106137465A (en) * | 2016-07-21 | 2016-11-23 | 北京爱康宜诚医疗器材有限公司 | Borrowed structure |
| EP3381410A1 (en) * | 2017-03-31 | 2018-10-03 | Waldemar Link GmbH & Co. KG | Connection sleeve for two anchoring shafts of two side-to-side prostheses |
| CN109938881B (en) * | 2017-12-20 | 2023-08-01 | 山东威高骨科材料股份有限公司 | Artificial bone mounting mechanism |
| CN113616389B (en) * | 2021-09-08 | 2024-03-26 | 河北春立航诺新材料科技有限公司 | Compression type prestress femur prosthesis |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2389639Y (en) * | 1999-09-30 | 2000-08-02 | 李岩 | Femoral stalk with locking screw for artificial hip joint |
| US6454810B1 (en) * | 1996-08-16 | 2002-09-24 | Guenter Lob | Endoprosthesis |
| CN102846410A (en) * | 2012-08-27 | 2013-01-02 | 上海晟实医疗器械科技有限公司 | Segmental prosthesis for human body long bone diaphysis position |
| CN102908215A (en) * | 2012-11-05 | 2013-02-06 | 胡永成 | Backbone assembled prosthesis |
| CN203564383U (en) * | 2013-10-21 | 2014-04-30 | 上海市第十人民医院 | Artificial middle femoral prosthesis |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7125423B2 (en) * | 2003-03-31 | 2006-10-24 | Depuy Products, Inc. | Intercalary prosthesis, kit and method |
-
2013
- 2013-10-21 CN CN201310494076.XA patent/CN103598932B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6454810B1 (en) * | 1996-08-16 | 2002-09-24 | Guenter Lob | Endoprosthesis |
| CN2389639Y (en) * | 1999-09-30 | 2000-08-02 | 李岩 | Femoral stalk with locking screw for artificial hip joint |
| CN102846410A (en) * | 2012-08-27 | 2013-01-02 | 上海晟实医疗器械科技有限公司 | Segmental prosthesis for human body long bone diaphysis position |
| CN102908215A (en) * | 2012-11-05 | 2013-02-06 | 胡永成 | Backbone assembled prosthesis |
| CN203564383U (en) * | 2013-10-21 | 2014-04-30 | 上海市第十人民医院 | Artificial middle femoral prosthesis |
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| Publication number | Publication date |
|---|---|
| CN103598932A (en) | 2014-02-26 |
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