CN104799978A - Femoral prosthesis - Google Patents
Femoral prosthesis Download PDFInfo
- Publication number
- CN104799978A CN104799978A CN201510268796.3A CN201510268796A CN104799978A CN 104799978 A CN104799978 A CN 104799978A CN 201510268796 A CN201510268796 A CN 201510268796A CN 104799978 A CN104799978 A CN 104799978A
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- China
- Prior art keywords
- base plate
- movable base
- convex arc
- arc block
- femoral prosthesis
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- 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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Links
- 210000000501 femur body Anatomy 0.000 claims description 7
- 210000002421 cell wall Anatomy 0.000 claims description 6
- 230000006978 adaptation Effects 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 210000000689 upper leg Anatomy 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 108010048734 sclerotin Proteins 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002639 bone cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000000629 knee joint Anatomy 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 230000000399 orthopedic effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
Landscapes
- Prostheses (AREA)
Abstract
The invention provides a femoral prosthesis, which comprises a femoral body, a movable base plate and a drive device, wherein the femoral body comprises a convex arc block; the movable base plate can be movably paved on the convex arc block; the drive device is in drive connection with the movable base plate so as to drive the movable base plate to move toward the periphery of the convex arc block. The femoral prosthesis can perfectly cover the anteroposterior diameter of an osteotomy face, and the service life of the femoral prosthesis in a human body can be prolonged.
Description
Technical field
The present invention relates to prosthese technical field, in particular to a kind of femoral prosthesis.
Background technology
Orthopedic technical aid is usually used to sclerotin and the tissue of repairing or change the damage in human body, and the quality of prosthetic designs directly affects the service life of prosthese, also determines the height of patient's loss economic cost.For knee joint, the coupling femur osteotomy surface that nowadays femoral prosthesis of many company designs all can not be good, this is just for later stage prosthetic loosening has buried hidden danger.
If prosthese can not cover osteotomy surface completely, that does not have chlamydate sclerotin would not be stressed, moves back theory according to entering to give up, and part sclerotin will loss by dissolution gradually, causes the intensity of sclerotin to reduce, finally will cause prosthetic loosening.
General when implanted femur prosthese, if want the perfect anteroposterior diameter covering osteotomy surface, that just must sacrifice the footpath, left and right of osteotomy surface, vice versa, almost do not have a prosthese can the simultaneously anteroposterior diameter of Perfect Matchings osteotomy surface and footpath, left and right, moreover the Osteotomy of patient is not on all four or proportional scaling, so want the prosthese designing excellent covering to be very difficult.
Therefore, in order to improve the prosthese life-span, reducing patient and replacing cost, be necessary to design the osteotomy surface that a combined prosthese carrys out satisfied every patient.
Summary of the invention
Main purpose of the present invention is to provide a kind of femoral prosthesis, to solve short problem in femoral prosthesis of the prior art service life.
To achieve these goals, the invention provides a kind of femoral prosthesis, comprising: femur body, femur body comprises convex arc block; Movable base plate, movable base plate is laid on convex arc block movingly; Driving device, driving device and movable base plate drive and are connected to drive movable base plate to move to the periphery of convex arc block.
Further, movable base plate is polylith, and polylith movable base plate is laid on convex arc block along the length direction of convex arc block successively, and movable base plate moves back and forth along the width of convex arc block under the driving of driving device.
Further, convex arc block has the first concave face, and movable base plate is laid on the first concave face.
Further, driving device comprises: executive item, and executive item to be arranged between convex arc block and movable base plate and to be threaded connection with movable base plate; Actuator, actuator moves for driving executive item.
Further, executive item is screw rod, convex arc block is established semicircle light groove, and the side of the close convex arc block of movable base plate is provided with the half slot mated with semicircle light groove, the cell wall of half slot is provided with thread segment, and semicircle light groove and half slot enclose the installing hole being formed and install screw rod.
Further, actuator is L shape drive rod, and the first end of L shape drive rod is prismatic structure, and the first end of screw rod is provided with the counterbore with prismatic structure adaptation.
Further, convex arc block is two pieces, has gap between two pieces of convex arc blocks, and movable base plate has the first state towards intermittent motion and the second state away from intermittent motion.
Further, one of convex arc block and movable base plate are provided with slide block, another are provided with the chute suitable with slide block, chute is dovetail groove.
Further, the cell wall of semicircle light groove is removably provided with stop block.
Apply technical scheme of the present invention, movable base plate is in the inner side of convex arc block when initial position, and when needing to regulate the coverage rate of femoral prosthesis, then driving device drives movable base plate to realize to the periphery motion of convex arc block.Can know when needs are at people's et al. Ke femoral prosthesis according to the structure of femoral prosthesis of the present invention, can be according to the actual requirements, driving device is utilized to drive movable base plate to move to the periphery of convex arc block, make femoral prosthesis ideally can cover the anteroposterior diameter of osteotomy surface, thus improve the service life of femoral prosthesis in human body.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 diagrammatically illustrates the decomposition view of femoral prosthesis of the present invention;
Fig. 2 diagrammatically illustrates the first three-dimensional structure diagram of femoral prosthesis of the present invention;
Fig. 3 diagrammatically illustrates the second three-dimensional structure diagram of femoral prosthesis of the present invention;
Fig. 4 diagrammatically illustrates the top view of femoral prosthesis of the present invention;
Fig. 5 diagrammatically illustrates the structure chart of the executive item solid in femoral prosthesis of the present invention;
Fig. 6 diagrammatically illustrates the three-dimensional structure diagram of the slide block in femoral prosthesis of the present invention; And
Fig. 7 schematically shows the side view of expecting femoral prosthesis of the present invention.
Wherein, above-mentioned accompanying drawing comprises the following drawings labelling:
10, femur body; 11, convex arc block; 12, the first concave face; 13, semicircle light groove; 20, movable base plate; 21, half slot; 30, driving device; 31, executive item; 311, counterbore; 32, actuator; 40, slide block; 50, chute.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
See shown in Fig. 1 to Fig. 7, according to embodiments of the invention, provide a kind of femoral prosthesis.
The femoral prosthesis of the present embodiment comprises femur body 10, movable base plate 20 and driving device 30.
Wherein, femur body 10 is provided with convex arc block 11, this convex arc block 11 forms the boss of femur; Movable base plate 20 is laid on convex arc block 11 movingly; Driving device 30 drives with movable base plate 20 and is connected, and moves to the periphery of convex arc block 11 for driving movable base plate 20.
In actual use, movable base plate 20 is in the inner side of convex arc block 11 when initial position, and when needing to regulate the coverage rate of femoral prosthesis, then driving device 30 drives movable base plate 20 to realize to the periphery motion of convex arc block 11.Can know when needs are at people's et al. Ke femoral prosthesis according to the structure of the femoral prosthesis of the present embodiment, can be according to the actual requirements, driving device 30 is utilized to drive movable base plate 20 to move to the periphery of convex arc block 11, make femoral prosthesis ideally can cover the anteroposterior diameter of osteotomy surface, thus improve the service life of femoral prosthesis in human body.In addition, the movable base plate 20 of the present embodiment can use in the human body with individual difference, effectively improves the versatility of femoral prosthesis.
The convex arc block 11 of femoral prosthesis is two pieces, between two pieces of convex arc blocks 11, there is gap, in the process of practical adjustments, movable base plate 20 has the first state towards above-mentioned intermittent motion and the second state away from intermittent motion, switched between a first state and a second state by movable base plate 20, the femoral prosthesis perfection of the present embodiment can be made to cover in the Osteotomy of patient, and then effectively improve the service life of femoral prosthesis in human body.
Shown in Figure 1, movable base plate 20 in the present embodiment is polylith, above-mentioned polylith movable base plate 20 is laid on convex arc block 11 along the length direction of convex arc block 11 successively, and movable base plate 20 moves back and forth along the width of convex arc block 11 under the driving of driving device 30.Namely the present invention only regulates the stress surface (femoral far end face and femoral-posterior condyles face) of femoral prosthesis, and non-stress face (femur preartis face) does not process, and improves the stability of femoral prosthesis, cuts down finished cost.
In the present embodiment, movable base plate 20 is set to polylith, in the process regulating movable base plate 20, can regulates separately according to the concrete property of different patient, be convenient to the versatility of the femoral prosthesis improving the present embodiment.
On the other hand, in the present embodiment, movable base plate 20 is arranged on as polylith, selectively can also avoids other obstacle parts on femoral prosthesis in the process of adjustment movable base plate 20, be convenient to expand to cover Osteotomy to the outward flange of femoral prosthesis.
Shown in composition graphs 1, the convex arc block 11 of the present embodiment has the first concave face 12, during installation, is laid on by movable base plate 20 on first concave face 12.In the present embodiment, movable base plate 20 is laid in the first concave face 12 of convex arc block 11, the structural stability of the femoral prosthesis of the present embodiment can be improved.
Certainly, in other embodiments of the invention, movable base plate 20 can also be laid in the plane of the projection of convex arc block 11.
Shown in composition graphs 1 to Fig. 3 and Fig. 7, the driving device 30 in the present embodiment comprises executive item 31 and actuator 32, and wherein, executive item 31 is arranged between convex arc block 11 and movable base plate 20, and is threaded connection with movable base plate 20; Actuator 32 moves for driving executive item 31.When actuator 32 drives executive item 31 to move, executive item 31 drives movable base plate 20 to move by the effect of connecting thread between movable base plate 20 and executive item 31, and then makes movable base plate 20 to the peripheral expansion of convex arc block 11.
Preferably, executive item 31 in the present embodiment is screw rod, convex arc block 11 is established semicircle light groove 13, the side of the close convex arc block 11 of movable base plate 20 is provided with the half slot 21 mated with semicircle light groove 13, the cell wall of half slot 21 is provided with thread segment, and semicircle light groove 13 and half slot 21 enclose the installing hole being formed and install screw rod.When actuator 32 drives executive item 31 to move, screw rod rotates, and drive movable base plate 20 to move, structure is simple, is convenient to realize.
Preferably, actuator 32 is L shape drive rod, and the first end of L shape drive rod is prismatic structure, and the first end of screw rod is provided with the counterbore 311 with prismatic structure adaptation.When needing to regulate the position of movable base plate 20, the first end of L shape drive rod is only needed to be arranged in the counterbore 311 of screw rod first end, lever principle drive screw is utilized to rotate, the actuator 32 of the present embodiment is also convenient to drive screw rod in narrow space, simple to operation.
In the process driving movable base plate 20, screw rod only rotates in installing hole, and can stably drive movable base plate 20 to move when not being mounted opposite the axis direction motion in hole, therefore, the cell wall of the semicircle light groove 13 of the present embodiment is removably provided with stop block (not shown), by the effect of stop block, executive item 31 stably can be arranged in installing hole, effectively improve modification stability and the reliability of the present embodiment femoral prosthesis.
In order to stably be limited on convex arc block 11 by movable base plate 20, one of both the convex arc block 11 of the present embodiment and movable base plate 20 are provided with slide block 40, and another is provided with the chute 50 suitable with slide block 40, chute 50 is dovetail groove.By the effect of dovetail groove and slide block 40, movable base plate stably can be limited on convex arc block 11, effectively improve stability and the reliability of the femoral prosthesis of the present embodiment.When movable base plate 20 moves, can move along the length direction of dovetail groove and slide block 40, structure is simple and be convenient to realize.
Femoral prosthesis according to the present embodiment can be known, femoral prosthesis mainly drives movable base plate 20 to realize extension movement on the convex arc block 11 of femur by stud.In operation process, can regulate femoral prosthesis according to the real Osteotomy of patient, thus make prosthese obtain good covering.After movable base plate 20 has regulated, bone cement can be utilized to be blocked by the counterbore outside stud, movable base plate 20 can be made so locked.
Principle of the present invention drives movable base plate 20 pairs of femoral prosthesiss to regulate by stud.Under initial situation, the inner side being positioned at convex arc block 11 of movable base plate 20, and movable base plate 20 does not protrude from convex arc block 11.After patient's osteotomy completes, the propagation regulating femoral prosthesis according to Osteotomy can be needed.
Stud engaged with movable base plate 20 moment, in femoral prosthesis uses, is supported by stud, make to there is gap between the half slot 21 on itself and movable base plate 20, effectively reduce friction by semicircle light groove 13.
As can be seen from the above description, the above embodiments of the present invention achieve following technique effect:
(1) improve the coverage rate of femoral prosthesis to Osteotomy.
(2) patient can the osteotomy situation according to patient in art regulate femoral prosthesis.
(3) the present invention carries out electrodeless adjustment by the rotation of screw thread to the propagation of movable base plate, the propagation not having screens to limit it at every turn to regulate, adjustment more accurate.
(4) the present invention only regulates the stress surface (femoral far end face and femoral-posterior condyles face) of femoral prosthesis, and non-stress face (femur preartis face) does not process, and improves the stability of femoral prosthesis, cuts down finished cost.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a femoral prosthesis, is characterized in that, comprising:
Femur body (10), described femur body (10) comprises convex arc block (11);
Movable base plate (20), described movable base plate (20) is laid on described convex arc block (11) movingly;
Driving device (30), described driving device (30) and described movable base plate (20) drive and are connected to drive described movable base plate (20) to move to the periphery of described convex arc block (11).
2. femoral prosthesis according to claim 1, it is characterized in that, described movable base plate (20) is polylith, described polylith movable base plate (20) is laid on described convex arc block (11) along the length direction of described convex arc block (11) successively, and described movable base plate (20) moves back and forth along the width of described convex arc block (11) under the driving of described driving device (30).
3. femoral prosthesis according to claim 1, is characterized in that, described convex arc block (11) has the first concave face (12), and described movable base plate (20) is laid on described first concave face (12).
4. femoral prosthesis according to claim 1, is characterized in that, described driving device (30) comprising:
Executive item (31), described executive item (31) to be arranged between described convex arc block (11) and described movable base plate (20) and to be threaded connection with described movable base plate (20);
Actuator (32), described actuator (32) moves for driving described executive item (31).
5. femoral prosthesis according to claim 4, it is characterized in that, described executive item (31) is screw rod, described convex arc block (11) establishes semicircle light groove (13), the side of the close described convex arc block (11) of described movable base plate (20) is provided with the half slot (21) mated with described semicircle light groove (13), the cell wall of described half slot (21) is provided with thread segment, and described semicircle light groove (13) and half slot (21) enclose the installing hole being formed and install described screw rod.
6. femoral prosthesis according to claim 5, it is characterized in that, described actuator (32) is L shape drive rod, and the first end of described L shape drive rod is prismatic structure, and the first end of described screw rod is provided with and the counterbore of prismatic structure adaptation (311).
7. femoral prosthesis according to claim 1, it is characterized in that, described convex arc block (11) is two pieces, have gap between described two pieces of convex arc blocks (11), described movable base plate (20) has the first state towards described intermittent motion and the second state away from described intermittent motion.
8. femoral prosthesis according to claim 1, it is characterized in that, described convex arc block (11) and described movable base plate (20) both one of on be provided with slide block (40), another is provided with the chute (50) suitable with described slide block (40), described chute (50) is dovetail groove.
9. femoral prosthesis according to claim 5, is characterized in that, the cell wall of described semicircle light groove (13) is removably provided with stop block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510268796.3A CN104799978B (en) | 2015-05-22 | 2015-05-22 | femoral prosthesis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510268796.3A CN104799978B (en) | 2015-05-22 | 2015-05-22 | femoral prosthesis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104799978A true CN104799978A (en) | 2015-07-29 |
| CN104799978B CN104799978B (en) | 2017-01-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510268796.3A Active CN104799978B (en) | 2015-05-22 | 2015-05-22 | femoral prosthesis |
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| Country | Link |
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| CN (1) | CN104799978B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110840625A (en) * | 2019-12-04 | 2020-02-28 | 北京爱康宜诚医疗器材有限公司 | Bone filling prosthesis |
| CN111035480A (en) * | 2019-12-25 | 2020-04-21 | 北京爱康宜诚医疗器材有限公司 | Tibia structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6364911B1 (en) * | 1997-04-22 | 2002-04-02 | Plus Endoprothetik Ag | Femoral sled prosthesis |
| WO2012024323A2 (en) * | 2010-08-16 | 2012-02-23 | Smith & Nephew, Inc. | Femoral cutting guide |
| US20120078263A1 (en) * | 2010-09-10 | 2012-03-29 | Zimmer, Inc. | Bone preserving intraoperative downsizing system for orthopaedic implants |
| CN103070739A (en) * | 2013-01-10 | 2013-05-01 | 上海晟实医疗器械科技有限公司 | Artificial knee-joint thighbone |
| CN204683844U (en) * | 2015-05-22 | 2015-10-07 | 北京爱康宜诚医疗器材股份有限公司 | Femoral prosthesis |
-
2015
- 2015-05-22 CN CN201510268796.3A patent/CN104799978B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6364911B1 (en) * | 1997-04-22 | 2002-04-02 | Plus Endoprothetik Ag | Femoral sled prosthesis |
| WO2012024323A2 (en) * | 2010-08-16 | 2012-02-23 | Smith & Nephew, Inc. | Femoral cutting guide |
| US20120078263A1 (en) * | 2010-09-10 | 2012-03-29 | Zimmer, Inc. | Bone preserving intraoperative downsizing system for orthopaedic implants |
| CN103070739A (en) * | 2013-01-10 | 2013-05-01 | 上海晟实医疗器械科技有限公司 | Artificial knee-joint thighbone |
| CN204683844U (en) * | 2015-05-22 | 2015-10-07 | 北京爱康宜诚医疗器材股份有限公司 | Femoral prosthesis |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110840625A (en) * | 2019-12-04 | 2020-02-28 | 北京爱康宜诚医疗器材有限公司 | Bone filling prosthesis |
| CN111035480A (en) * | 2019-12-25 | 2020-04-21 | 北京爱康宜诚医疗器材有限公司 | Tibia structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104799978B (en) | 2017-01-11 |
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Address after: 102200 Beijing science and Technology Park of Changping District Bai Fu Road 10 Patentee after: Beijing Aikang Yicheng Medical Equipment Co., Ltd. Address before: 102200 Beijing science and Technology Park of Changping District Bai Fu Road 10 Patentee before: Beijing AKEC Medical Co.,Ltd. |
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