CN103083073A - Fracture of tibial plateau internal fixing device - Google Patents
Fracture of tibial plateau internal fixing device Download PDFInfo
- Publication number
- CN103083073A CN103083073A CN 201110345930 CN201110345930A CN103083073A CN 103083073 A CN103083073 A CN 103083073A CN 201110345930 CN201110345930 CN 201110345930 CN 201110345930 A CN201110345930 A CN 201110345930A CN 103083073 A CN103083073 A CN 103083073A
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- assembly
- fracture
- screw thread
- tibial plateau
- fixing device
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Abstract
The invention discloses a fracture of tibial plateau internal fixing device which consists of a component (A) and a component (B). The component (A) consists of two sections of main screw threads. The fracture of tibial plateau internal fixing device is characterized in that the front end screw thread (1) is a taper screw thread. The thread pitch of the screw thread (1) is larger than that of a screw thread (2). The thread depth of the screw thread (1) is deeper than that of the screw thread (2). The rear end screw thread (2) is connected with the front end internal thread of the component (B) in a cooperation mode. The component (B) is an internal hollow cylindrical body. A tail end (7) is arranged on the tail of the component (B). A tightening structure (6) which matches with an outer sleeve of compound sleeves is arranged at the tail end (7). The tightening structure (6) communicates with the internal hollow portion of the component (B). According to bone mineral density of patient, pressure required by intra- articular fracture bone and torque required by tightening device is quantified so as to be beneficial to early recovery of patient.
Description
Technical field
The present invention relates to medical fracture fixture, relate in particular to the internal fixation system that is applied to fracture of the tibial plateau.
Background technology
The fracture of the tibial plateau that needs operation in treatment need to be realized resetting between sclerite by lag screw, pressurize and strong fixing.This Therapeutic Method and interior fixing biomechanical principle used are as follows: lag screw relies on the axial compression stress between pad or blade plate and cortical bone, forms pressor effect between sclerite, realizes resetting between sclerite, pressurizes and strong fixing; But at present lag screw realize resetting between sclerite pressurization and strongly can not quantize to be screwed into the required torsion of lag screw fixedly the time can not quantize the pressure between sclerite, does not have fixed effect biology, has the problem of initial solid failure.
So-called initial solid failure refers to: the required torsion of lag screw that is screwed into sclerite depends on patient's experience, usually by overtorquing, causes the damage of screw plastic deformation, fracture or bone and thread interface, makes interior solid failure.The required torsion of lag screw that is screwed into sclerite depends on patient's experience, and the accumulation of experience depends on the experience of failure, has the gradient of a learning curve, is unfavorable for the formation of the quantitative criteria of this technology.
So-called biology, fixed effect referred to: osseous tissue grow into internal fixation device surface, make between bone and internal fixation device more stablely, and fixing in reducing loosening probability occurs; This, fixed effect was even more important in the osteoporosis situation biology.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of fracture of the tibial plateau inner fixing device, during its fixed tibial Platform Fracture, can be according to bone mineral density, quantification is screwed into the required torsion of fracture of the tibial plateau piece with screw assemblies, quantize the required pressure of pressurization between the fracture of the tibial plateau piece, reset, effective protector screw thread and spongy bone interface in the pressure bone folded block, avoid interior fixing initial solid failure; Reduce at a specified future date in fixing loosening probability, this, fixed effect was even more important in the osteoporosis situation biology.
For solving the problems of the technologies described above, the invention provides following technical scheme: a kind of fracture of the tibial plateau inner fixing device, consisted of by assembly A and assembly B, wherein assembly A is comprised of two sections pin threads, wherein: front end screw thread 1 is tapered thread, its pitch and the depth of thread are larger than screw thread 2, rear end screw thread 2 is connected with the front end screw-internal thread fit of assembly B, assembly B is the cylinder of inner hollow, its afterbody is provided with end 7, in be provided with the screwing structure 6 that is complementary with the combined sleeve outer sleeve, screwing structure 6 is connected with assembly B inner hollow.
As a kind of preferred version of fracture of the tibial plateau inner fixing device of the present invention, wherein: the wall thickness that described assembly A and the wall thickness of the connecting portion of assembly B are connected with cortical bone less than assembly B afterbody.
As a kind of preferred version of fracture of the tibial plateau inner fixing device of the present invention, wherein: the wall thickness 4-4.8mm of the connecting portion of described assembly A and assembly B, the wall thickness that described assembly B afterbody is connected with cortical bone is 5mm.
As a kind of preferred version of fracture of the tibial plateau inner fixing device of the present invention, wherein: the wall thickness 4.5mm of the connecting portion of described assembly A and assembly B, the wall thickness that described assembly B afterbody is connected with cortical bone is 4.8mm.
Adopt device of the present invention to have following useful technique effect: by assembly A and the assembly B move toward one another at the fracture of the tibial plateau interblock, eliminate the gap between sclerite, the help sclerite resets, realize pressurization between sclerite strong effective protector surrounding bone interface fixing the time preventing initial solid failure; Assembly B has further improved the stability at bone-screw assemblies interface, reduce at a specified future date in fixing loosening probability, this, fixed effect was even more important in the osteoporosis situation biology.
Description of drawings
Fig. 1 is the schematic diagram that assembly A is combined with assembly B.
Fig. 2 is described device user mode schematic diagram.
The specific embodiment
The present invention is further detailed explanation below in conjunction with accompanying drawing.
As Fig. 1, Fig. 2, the fracture of the tibial plateau inner fixing device that is applied to of the present invention is divided into two parts: assembly A, assembly B.Assembly A is by screw thread 1, and screw thread 2 forms, and afterbody is the hollow prismatic structure, and for example hexagonal prismoid or other shapes, be positioned in screw thread 2 axle cores.The screw thread 2 that assembly B one end is provided with screw thread 5 and assembly A is complementary, and screw thread 5 is the parts that realize pressor effect between sclerite, and the assembly B other end is provided with end 7, contains prism-shaped hole 6, and prism-shaped hole 6 is connected by excessive section 3 with screw thread 5.Assembly B surface is processed through sandblast, porous and hydroxyapatite coating layer and is formed microporous layers surface 4.Front end screw thread 1 is tapered thread, its pitch and the depth of thread are larger than screw thread 2, rear end screw thread 2 is connected with the front end screw-internal thread fit of assembly B, assembly B is the cylinder of inner hollow, its afterbody is provided with end 7, in be provided with the screwing structure 6 that is complementary with the combined sleeve outer sleeve, screwing structure 6 is connected with assembly B inner hollow.
As a kind of preferred version of fracture of the tibial plateau inner fixing device of the present invention, wherein: the wall thickness that described assembly A and the wall thickness of the connecting portion of assembly B are connected with cortical bone less than assembly B afterbody.
As a kind of preferred version of fracture of the tibial plateau inner fixing device of the present invention, wherein: the wall thickness 4-4.8mm of the connecting portion of described assembly A and assembly B, the wall thickness that described assembly B afterbody is connected with cortical bone is 5mm.
As a kind of preferred version of fracture of the tibial plateau inner fixing device of the present invention, wherein: the wall thickness 4.5mm of the connecting portion of described assembly A and assembly B, the wall thickness that described assembly B afterbody is connected with cortical bone is 4.8mm.
The operation using method: by the standard procedures flow process, sterilization paving is single and expose the femoral-posterior condyles sclerite by the standard procedures approach, resets and utilizes Kirschner wire and the temporary fixed fracture of the tibial plateau of point-type reset forceps, perspective to confirm that the reduction of the fracture is good; Be screwed into assembly A, turn in proper site punching and tapping with electro-medical, and measure and follow closely hole depth, according to the scale of the nail hole depth that records in conjunction with interior sub-surface, screw thread 1 part of assembly A is screwed into the suitable degree of depth, make screw thread 1 part of assembly A enter the Contralateral fracture piece fully, this moment assembly A and anchoring of offside fracture of the tibial plateau piece, its effect is similar to the screw thread of cancellous bone screw in the anchoring of offside fracture of the tibial plateau piece.Fixation kit A, the outer bottle opener of rotation composite screwdriver makes between assembly B and assembly A and constantly screws.At the outer bottle opener that utilizes composite screwdriver, assembly B is screwed in sclerite in this process, because assembly A is fixed by the interior bottle opener of composite screwdriver, therefore assembly B is to assembly A move toward one another, when seamless between the end 7 of assembly B and sclerite cortex, assembly B forms pressor effect to the further move toward one another of assembly A to sclerite, what this pressor effect was conducive to the fracture of the tibial plateau piece resets, eliminates gap between sclerite, forms pressor effect between sclerite.
According to the operation needs, continue to be screwed into this device and other inside-fixtures at suitable position by identical flow process, until reach the expection therapeutic effect.
The perspective confirmation reduction of the fracture and interior fixed position are good again, rinse wound surface and definitely are seamed to successively skin after hemostasis.
It should be noted that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to preferred embodiment, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not breaking away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (4)
1. fracture of the tibial plateau inner fixing device, consisted of by assembly (A) and assembly (B), wherein assembly (A) is comprised of two sections pin threads, it is characterized in that: front end screw thread (1) is tapered thread, its pitch and the depth of thread are larger than screw thread (2), rear end screw thread (2) is connected with the front end screw-internal thread fit of assembly (B), assembly (B) is the cylinder of inner hollow, its afterbody is provided with end (7), in be provided with the screwing structure (6) that is complementary with the combined sleeve outer sleeve, screwing structure (6) is connected with assembly B inner hollow.
2. fracture of the tibial plateau inner fixing device according to claim 1 is characterized in that: the wall thickness that described assembly (A) and the wall thickness of the connecting portion of assembly (B) are connected with cortical bone less than assembly (B) afterbody.
3. fracture of the tibial plateau inner fixing device according to claim 1 is characterized in that: the wall thickness 4-4.8mm of described assembly (A) and the connecting portion of assembly (B), the wall thickness that described assembly (B) afterbody is connected with cortical bone is 5mm.
4. fracture of the tibial plateau inner fixing device according to claim 3 is characterized in that: the wall thickness 4.5mm of described assembly (A) and the connecting portion of assembly (B), the wall thickness that described assembly (B) afterbody is connected with cortical bone is 4.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110345930 CN103083073A (en) | 2011-11-04 | 2011-11-04 | Fracture of tibial plateau internal fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110345930 CN103083073A (en) | 2011-11-04 | 2011-11-04 | Fracture of tibial plateau internal fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103083073A true CN103083073A (en) | 2013-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110345930 Pending CN103083073A (en) | 2011-11-04 | 2011-11-04 | Fracture of tibial plateau internal fixing device |
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|---|---|
| CN (1) | CN103083073A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107137135A (en) * | 2017-05-31 | 2017-09-08 | 南方医科大学南方医院 | A kind of combined type orthopaedic screw |
| CN110200727A (en) * | 2019-07-01 | 2019-09-06 | 中国人民解放军第四军医大学 | A kind of 3D printing tubular porous titanium prosthesis and preparation method thereof for four limbs large segmental bone defect |
| CN110680485A (en) * | 2019-09-11 | 2020-01-14 | 杨惠林 | Locking combined compression screw |
-
2011
- 2011-11-04 CN CN 201110345930 patent/CN103083073A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107137135A (en) * | 2017-05-31 | 2017-09-08 | 南方医科大学南方医院 | A kind of combined type orthopaedic screw |
| CN110200727A (en) * | 2019-07-01 | 2019-09-06 | 中国人民解放军第四军医大学 | A kind of 3D printing tubular porous titanium prosthesis and preparation method thereof for four limbs large segmental bone defect |
| CN110680485A (en) * | 2019-09-11 | 2020-01-14 | 杨惠林 | Locking combined compression screw |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130508 |