CN104783934A - Tibial plateau assembly - Google Patents
Tibial plateau assembly Download PDFInfo
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- CN104783934A CN104783934A CN201510233996.5A CN201510233996A CN104783934A CN 104783934 A CN104783934 A CN 104783934A CN 201510233996 A CN201510233996 A CN 201510233996A CN 104783934 A CN104783934 A CN 104783934A
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- tibial plateau
- fixing head
- platform body
- main platform
- support portion
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Abstract
The invention provides a tibial plateau assembly. The tibial plateau assembly comprises a plateau body (10) and a supporting portion (20) arranged below the plateau body (10). The tibial plateau assembly further comprises a fixing plate (31) and a fastening piece for fixing an implanted bone block. The fixing plate (31) is connected to the peripheral side wall of the plateau body (10) and stretches in the axial direction of the plateau body (10). The fastening piece is arranged on the fixing plate (31) and thee supporting portion (20) in a penetrating mode. A space for containing and fixing the implanted bone block is formed between the fixing plate (31) and the supporting portion (20). By means of the technical scheme, the problem that in the prior art, a tibial plateau assembly cannot conduct repair on the uncontained bone defect independently is solved.
Description
Technical field
The present invention relates to technical field of medical instruments, in particular to a kind of tibial plateau assembly.
Background technology
Knee joint is one of important joint of human body lower limbs, and meanwhile, gonarthrosis is also common complaint among the elderly, frequently-occurring disease, and one of its concrete manifestation is that the wearing and tearing of articular cartilage or regression can cause arthralgia.
In the process for the treatment of gonarthrosis, the surface replacement art that the most frequently used is exactly in knee replacements.Particularly, the cartilage that kneed femur and tibia wear and tear and subchondral bone are reamed skim, form osteotomy surface, then the mode of the metal implanting prosthetic of vitallium by directly fixing mode or cement reaction is fixed on this osteotomy surface, thus substitutes the joint sclerotin of wearing and tearing.In above-mentioned implanting prosthetic, parts for alternative femur side seam matter are called condyle of femur, parts for alternative tibial side sclerotin are called tibial plateau, serve as a contrast with polyethylene pads between condyle of femur and tibial plateau, thus play the effect reducing friction, recover knee joint function.
At present, for knee joint Cranial defect, usually need to carry out artificial full knee joint transposing.In above-mentioned artificial full knee joint transposing process, particularly in overhaul technology, sometimes with bone loss to a certain degree.Knee joint Cranial defect is roughly divided into pardon and non-packet capacitive Cranial defect.Wherein, the surrounding of pardon Cranial defect still has complete cortical bone to hold, and fills when overhauling by particulate cancellous bone bone grafting or bone cement screw.But the cortical bone of the surrounding of non-packet capacitive Cranial defect is partly or entirely lost, and use of having to clinically is overhauled type prosthese and rebuild, more large-area sclerotin can be caused like this to remove, adverse influence is brought to overhauling of future simultaneously.Therefore, how processing the non-packet capacitive Cranial defect occurred in Primary replacement art is one of challenge faced by complete knee joint Primary replacement.
Summary of the invention
Main purpose of the present invention is to provide a kind of tibial plateau assembly, to solve the problem that tibial plateau assembly of the prior art cannot realize separately the reparation to non-packet capacitive Cranial defect.
To achieve these goals, the invention provides a kind of tibial plateau assembly, comprise main platform body and be arranged on the support portion below main platform body, tibial plateau assembly also comprises fixing head and the securing member for fixing implantable bone block, fixing head is connected in the circumferential side wall of main platform body, and fixing head extends along the axial direction of main platform body, securing member is located on fixing head and support portion, is formed for holding and the space of fixing implantable bone block between fixing head and support portion.
Further, fixing head is arranged adjustably along the circumferential position of main platform body.
Further, securing member is the first trip bolt, and support portion has the screwed hole matched with the first trip bolt.
Further, fixing head has the through hole for wearing the first trip bolt.
Further, be connected by the second trip bolt between fixing head and the sidewall of main platform body.
Further, fixing head has limited step on the inner surface of main platform body, and the step surface of limited step matches with the lower surface of main platform body.
Further, support portion comprises support column and is arranged on the support bar below support column, and screwed hole is positioned in the circumferential side wall of support column.
Further, support column has container cavity, the circumferential side wall of support column has the fusion through hole communicated with container cavity.
Further, support column is tapered, and support column is along extending with shrinking gradually away from the direction of main platform body.
Further, the outer surface of support portion and fixing head all has biological coating on the inner surface of support portion.
Apply technical scheme of the present invention, main platform body is fixedly installed fixing head, and wear securing member on fixing head and support portion.When repairing non-packet capacitive Cranial defect, the space implantable bone block between fixing head and support portion, and by securing member, this bone block is fixed.Then, tibial plateau assembly is placed in patient's proximal tibia, thus realizes the reparation to non-packet capacitive Cranial defect, avoid use to overhaul type prosthese and rebuild, the reservation of patient's sclerotin is played a positive role.
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 shows the structural representation of the embodiment according to tibial plateau assembly of the present invention;
Fig. 2 shows the structural representation of another angle of the tibial plateau assembly of Fig. 1;
Fig. 3 shows the main platform body of tibial plateau assembly and the structural representation of support portion of Fig. 1;
Fig. 4 shows the structural representation of the main platform body of Fig. 3 and another angle of support portion;
Fig. 5 shows the structural representation towards main platform body side of the fixing head of the tibial plateau assembly of Fig. 1;
Fig. 6 shows the structural representation of the side of main platform body dorsad of the fixing head of Fig. 5; And
Fig. 7 shows the structural representation of another angle of the fixing head of Fig. 5.
Wherein, above-mentioned accompanying drawing comprises the following drawings labelling:
10, main platform body; 20, support portion; 21, screwed hole; 22, support column; 23, support bar; 24, through hole is merged; 31, fixing head; 311, through hole; 312, limited step; 32, the first trip bolt; 33, the second trip bolt.
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.
As depicted in figs. 1 and 2, the support portion 20 that the tibial plateau assembly in the present embodiment comprises main platform body 10 and is arranged on below main platform body 10.Tibial plateau assembly also comprises fixing head 31 and the securing member for fixing implantable bone block.Wherein, fixing head 31 is connected in the circumferential side wall of main platform body 10, and fixing head 31 extends along the axial direction of main platform body 10.Securing member is located in fixing head 31 with on support portion 20.Formed between fixing head 31 and support portion 20 for holding and the space of fixing implantable bone block.
The tibial plateau assembly of application the present embodiment, main platform body 10 is fixedly installed fixing head 31, and wears securing member on fixing head 31 with support portion 20.When repairing non-packet capacitive Cranial defect, the space implantable bone block between fixing head 31 and support portion 20, and by securing member, this bone block is fixed.Then, tibial plateau assembly is placed in patient's proximal tibia, thus realizes the reparation to non-packet capacitive Cranial defect, avoid use to overhaul type prosthese and rebuild, the reservation of patient's sclerotin is played a positive role.
It should be noted that, in the present embodiment, implantable bone block is fixed between fixing head 31 and support portion 20 by the first trip bolt 32.Above-mentioned bone block is located in (not shown) on the first trip bolt 32.When repairing Cranial defect, first bone block is placed between fixing head 31 and support portion 20, again by the first trip bolt 32 through after the through hole 311 on fixing head 31 and bone block, be threaded onto in the screwed hole 21 of support portion 20, thus realize fixedly securing bone block.Certainly, the cooperation position of bone block and the first trip bolt 32 is not limited thereto, and in other embodiments, can use multiple first trip bolt 32 by the clamping of bone block to realize fixing bone block.
In the present embodiment, fixing head 31 is arranged adjustably along the circumferential position of main platform body 10.The defect concrete according to patient, can adjust the position of fixing head 31 relative to support portion 20, thus makes the implantable bone block between fixing head 31 and support portion 20 more be adapted to defect, makes repairing effect better.
As shown in Figures 1 to 7, in the tibial plateau assembly of the present embodiment, securing member is the first trip bolt 32, and support portion 20 has the screwed hole 21 matched with the first trip bolt 32.The structure of the first trip bolt 32 is simple, be easy to realize, and the first trip bolt 32 can produce pulling force to fixing head 31 and support portion 20, effectively to prevent tibial plateau assembly from rotating in patient body, thus enhance the stability of implanting prosthetic in patient body.In the present embodiment, the quantity of the first trip bolt 32 is four, it should be noted that, the quantity of the first trip bolt 32 can adjust according to and the position of fixing head 31 fast to implantable bone and the specific requirement of quantity.Certainly, the form of securing member is not limited thereto, and in unshowned in the drawings embodiment, securing member can be other forms of fastening structure, as standing screw, steady pin etc.
As shown in Figure 1, Figure 2 and shown in Fig. 5 to Fig. 7, in the tibial plateau assembly of the present embodiment, fixing head 31 has the through hole 311 for wearing the first trip bolt 32.Through hole 311 on fixing head 31 and screwed hole 21 one_to_one corresponding on support portion 20.Fixing head 31 and the first trip bolt 32 are set to Split type structure, use more flexible.Certainly, the structure of fixing head 31 and the first trip bolt 32 is not limited thereto, and in unshowned in the drawings embodiment, fixing head 31 and the first trip bolt 32 also can be structure as a whole.
In the present embodiment, the material of fixing head 31 is pure titanium material, thus fixing head 31 appropriateness in operation can be made bending with the skeleton of the patient that fits as much as possible.Certainly, the material of fixing head 31 is not limited thereto, and in other embodiments, fixing head 31 can be other materials.
As depicted in figs. 1 and 2, in the tibial plateau assembly of the present embodiment, be fixedly connected with by the second trip bolt 33 between fixing head 31 and the sidewall of main platform body 10.The sidewall of main platform body 10 has the multiple screw holes that arrange corresponding to the second trip bolt 33, fixing head 31 is fixed on the sidewall of main platform body 10 by the second trip bolt 33.In addition, the screw hole that the second trip bolt 33 is different from main platform body 10 coordinates, and can adjust the particular location of fixing head 31.
As shown in Figure 1, Figure 2, shown in Fig. 5 and Fig. 7, in the tibial plateau assembly of the present embodiment, fixing head 31 has limited step 312 on the inner surface of main platform body 10, and the step surface of limited step 312 matches with the lower surface of main platform body 10.Said structure plays the effect of location to main platform body 10.In the present embodiment, fixing head 31 with limited step 312 for border is divided into top fixed edge and the lower tie plate wing, top fixed edge is fixedly connected with the sidewall of main platform body 10 by the second trip bolt 33, the lower tie plate wing has the through hole 311 for wearing the first trip bolt 32.When repairing Cranial defect, the step surface of the limited step 312 of fixing head 31 and the lower surface of main platform body 10 being fitted, and with the second trip bolt 33, fixing head 31 is fixed on the sidewall of main platform body 10.
As shown in Figures 1 to 4, in the tibial plateau assembly of the present embodiment, the support bar 23 that support portion 20 comprises support column 22 and is arranged on below support column 22, screwed hole 21 is positioned in the circumferential side wall of support column 22.Support portion 20 is inserted in human tibia pulp cavity to play the effect to tibial plateau assembly supplemental support.In the present embodiment, in support column 22, there is container cavity, and there is the fusion through hole 24 communicated with container cavity in the circumferential side wall of support column 22.Optionally can be implanted into fused bone block at container cavity, this fused bone block can by merge osseous tissue intact around through hole 24 and support portion 20 or and the bone block implanted between fixing head 31 and support portion 20 merge well, the form farthest adapting to defect sclerotin can be realized, improve the repairing quality to Cranial defect.
As shown in Figures 1 to 4, in the tibial plateau assembly of the present embodiment, support column 22 is tapered, and support column 22 extends gradually along on the direction away from main platform body 10 with shrinking.Said structure can make the implantation of support portion 20 be more prone to operation.Certainly, the shape of support column 22 is not limited thereto, and in unshowned in the drawings embodiment, support column 22 also can be other shapes.
In the prior art, most knee joint implanting prosthetic adopts between cement reaction mode and skeleton and is fixed.Such as, but there are some defects in bone cement itself, can produce some complication, bone cement chip can cause prosthetic loosening.In actual therapeutic, for young, the good patient of sclerotin, also can adopt biological fixation mode, but biological fixation mode is for inapplicable older, that sclerotin is bad patient.
In the present embodiment, the bottom of main platform body 10 has bone cement groove.The upper surface of main platform body 10 matches with tibial insert, and the bone cement groove of bottom is used for hold bone cement, and main platform body 10 passes through this cement reaction with the osteotomy surface at tibial prosthesis place.
As shown in Figures 1 to 7, in the tibial plateau assembly of the present embodiment, the outer surface of support portion 20 and fixing head 31 on the inner surface of support portion 20, all there is biological coating.This biological coating can be hydroxyl apatite bioceramic coating or pure titanium valve coating.In the present embodiment, support portion 20 is inserted in human tibia pulp cavity, and support portion 20 and the bone marrow in pulp cavity can merge by above-mentioned biological coating arrange better, realize biological fixation.In addition, fixing head 31 also can merge with the bone block implanted well towards the biological coating on the inner surface of main platform body 10.It should be noted that, biological coating is not limited to hydroxyl apatite bioceramic coating and pure titanium valve coating, and in other embodiments unshowned in the drawings, biological coating also can be other forms of biological coating.
Said structure can realize the compound fixed form of cement reaction and biological fixation, and the advantage of comprehensive two kinds of fixed forms, all there is good therapeutic effect to the patient of all ages and classes, different sclerotin.
From above description, can find out, the above embodiments of the present invention achieve following technique effect: the tibial plateau assembly of the application can realize the reparation to non-packet capacitive Cranial defect, avoid use to overhaul type prosthese and rebuild, play a positive role to the reservation of patient's sclerotin.In addition, the tibial plateau assembly of the application have employed cement reaction technology, biological coating technology and bone integration technology simultaneously, can the initial stage of implanting prosthetic and later stage stable fixing in there is good effect.
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 (10)
1. a tibial plateau assembly, comprise main platform body (10) and be arranged on the support portion (20) below described main platform body (10), it is characterized in that, described tibial plateau assembly also comprises fixing head (31) and the securing member for fixing implantable bone block, described fixing head (31) is connected in the circumferential side wall of described main platform body (10), and described fixing head (31) extends along the axial direction of described main platform body (10), described securing member is located in described fixing head (31) with on described support portion (20), the space for holding and fix described implantable bone block is formed between described fixing head (31) and described support portion (20).
2. tibial plateau assembly according to claim 1, is characterized in that, described fixing head (31) is arranged adjustably along the circumferential position of described main platform body (10).
3. tibial plateau assembly according to claim 1, it is characterized in that, described securing member is the first trip bolt (32), and described support portion (20) have the screwed hole (21) matched with described first trip bolt (32).
4. tibial plateau assembly according to claim 3, is characterized in that, described fixing head (31) has the through hole (311) for wearing described first trip bolt (32).
5. tibial plateau assembly according to claim 1, is characterized in that, is connected between described fixing head (31) and the sidewall of described main platform body (10) by the second trip bolt (33).
6. tibial plateau assembly according to claim 1, it is characterized in that, described fixing head (31) has limited step (312) on the inner surface of described main platform body (10), and the step surface of described limited step (312) matches with the lower surface of described main platform body (10).
7. tibial plateau assembly according to claim 3, it is characterized in that, described support portion (20) comprises support column (22) and is arranged on the support bar (23) of described support column (22) below, and described screwed hole (21) is positioned in the circumferential side wall of described support column (22).
8. tibial plateau assembly according to claim 7, is characterized in that, described support column (22) has container cavity, the circumferential side wall of described support column (22) has the fusion through hole (24) communicated with described container cavity.
9. tibial plateau assembly according to claim 8, is characterized in that, described support column (22) is tapered, and described support column (22) extends along away from the direction of described main platform body (10) being shunk gradually ground.
10. tibial plateau assembly according to claim 1, is characterized in that, the outer surface of described support portion (20) and described fixing head (31) on the inner surface of described support portion (20), all there is biological coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510233996.5A CN104783934B (en) | 2015-05-08 | 2015-05-08 | Tibial plateau assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510233996.5A CN104783934B (en) | 2015-05-08 | 2015-05-08 | Tibial plateau assembly |
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| Publication Number | Publication Date |
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| CN104783934A true CN104783934A (en) | 2015-07-22 |
| CN104783934B CN104783934B (en) | 2017-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510233996.5A Active CN104783934B (en) | 2015-05-08 | 2015-05-08 | Tibial plateau assembly |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1628273A1 (en) * | 1989-07-04 | 1994-11-15 | И.И. Юрченко | Endoprosthesis of knee joint |
| US5733290A (en) * | 1995-12-21 | 1998-03-31 | Johnson & Johnson Professional, Inc. | Quick-release tibial alignment handle |
| US20040006393A1 (en) * | 2002-07-03 | 2004-01-08 | Brian Burkinshaw | Implantable prosthetic knee for lateral compartment |
| FR2960417A1 (en) * | 2010-05-25 | 2011-12-02 | Sem Sa | Prosthetic assembly for knee articulation of tibia during orthopedic surgery, has base plate whose peripheral edge includes material ridge for passage of nozzle of insert during installation time of insert by sliding in receiving zone |
| CN103260552A (en) * | 2010-10-14 | 2013-08-21 | 德普伊新特斯产品有限责任公司 | Prosthesis with surfaces having different textures and method of making the prosthesis |
| US20130218284A1 (en) * | 2012-02-16 | 2013-08-22 | Mobius Medical LLC | Tibial baseplate assembly for knee joint prosthesis |
| CN103598934A (en) * | 2013-10-30 | 2014-02-26 | 嘉思特华剑医疗器材(天津)有限公司 | Knee joint prosthesis filling pad |
| CN204636619U (en) * | 2015-05-08 | 2015-09-16 | 北京爱康宜诚医疗器材股份有限公司 | Tibial plateau assembly |
-
2015
- 2015-05-08 CN CN201510233996.5A patent/CN104783934B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1628273A1 (en) * | 1989-07-04 | 1994-11-15 | И.И. Юрченко | Endoprosthesis of knee joint |
| US5733290A (en) * | 1995-12-21 | 1998-03-31 | Johnson & Johnson Professional, Inc. | Quick-release tibial alignment handle |
| US20040006393A1 (en) * | 2002-07-03 | 2004-01-08 | Brian Burkinshaw | Implantable prosthetic knee for lateral compartment |
| FR2960417A1 (en) * | 2010-05-25 | 2011-12-02 | Sem Sa | Prosthetic assembly for knee articulation of tibia during orthopedic surgery, has base plate whose peripheral edge includes material ridge for passage of nozzle of insert during installation time of insert by sliding in receiving zone |
| CN103260552A (en) * | 2010-10-14 | 2013-08-21 | 德普伊新特斯产品有限责任公司 | Prosthesis with surfaces having different textures and method of making the prosthesis |
| US20130218284A1 (en) * | 2012-02-16 | 2013-08-22 | Mobius Medical LLC | Tibial baseplate assembly for knee joint prosthesis |
| CN103598934A (en) * | 2013-10-30 | 2014-02-26 | 嘉思特华剑医疗器材(天津)有限公司 | Knee joint prosthesis filling pad |
| CN204636619U (en) * | 2015-05-08 | 2015-09-16 | 北京爱康宜诚医疗器材股份有限公司 | Tibial plateau assembly |
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| CN104783934B (en) | 2017-01-25 |
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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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