A kind of modular necks for orthopaedic devicesTechnical field
The present invention relates to technical field of medical instruments, more particularly to a kind of modular necks for orthopaedic devices.
Background technology
In some cases, after implant is inserted in the spinal canal of bone, implant may be than estimated riding positionIt is higher or lower.For example, in arthroplasty of hip, the femur diaphyseal portion of hip prosthesis is being inserted into the stock for preparingAfter in pipe, may near-end projectedly dispose, or may be positioned to more distal end than expected on the contrary.The problem mayThe leg of patient can be caused too short or long.
If femur diaphyseal portion is laid excessively to protrude in near-end, then it can be drawn off, and can be with largerReamer to spinal canal carry out again reaming with allow by backbone be positioned to more distal end.If hip prosthesis in femoral canalDistal end disposes too far, then can be drawn off and larger prosthese making space is thought in reaming again.Because precious boneCortex, which is removed, thinks prosthese vacating space, so this can increase the risk of fracture and to invade degree higher.
The content of the invention
It is simple in construction the invention provides a kind of modular necks for orthopaedic devices, it is easy to use, neck will be implanted intoModularized design is carried out, the adjustment for realizing height, offset and torsion angle that can be independent, so as to solve in existing operationThe device of regulation implant height needs to compromise to the structural intergrity of the implant, improve operation efficiency and intoPower.
In order to solve the above technical problems, the invention provides a kind of modular necks for orthopaedic devices, including neckKey and neck section, described neck backbone are connected with neck section, and described neck root section is different provided with not according to the size of user's boneSame model, each described neck section include the near-end for realizing connection key with neck and fixed with the realization of other bonesDistal end, the center line of described near-end realizes and connects that it is key that described neck section can surround neck with the key center line of neckRealize any one of height, offset and torsion angle.
As the preferable technical scheme of the present invention, described neck skeletal internal is drilled with the brill of suitable dimensionHole, drilling in be provided with implant cavity, described implant cavity is made of biomaterial, implant cavity have high intensity, no conflict reactThe features such as.
As the preferable technical scheme of the present invention, implant, described implant are provided with described implant cavityTo be spherical, implant is made using titanium alloy etc materials.
As the preferable technical scheme of the present invention, described implant cavity both sides are provided with adjustable track, adjustable trackIt is fixed by titanium nail, described implant both ends are welded with fix bar.
As the preferable technical scheme of the present invention, described fix bar is located in adjustable track and can be along regulationTrack carries out height adjustment, and described fix bar cannot carry out height regulation after being fixed in a certain position of adjustable track, canTo carry out offset adjusted.
As the preferable technical scheme of the present invention, it is filled with the space between described implant cavity and implantLubricating fluid.
As the preferable technical scheme of the present invention, the key neck section length that is provided between neck section of described neck is adjustedEngagement positions, described neck section length adjuster include base, regulating sleeve and adjustable plate, and described adjustable plate can be along regulationMove in sleeve height direction.
As the preferable technical scheme of the present invention, secondary spring is provided between described base and adjustable plate.
As the preferable technical scheme of the present invention, described secondary spring, to be fixedly connected, aids in bullet with baseWith adjustable plate to be flexibly connected, adjustable plate can be rotated spring in regulating sleeve.
The one or more technical schemes provided in the embodiment of the present application, have at least the following technical effects or advantages：
It is simple in construction, it is easy to use, will implantation neck carry out modularized design, can be independent realization height, offsetWith the adjustment of torsion angle, the device of implant height is adjusted in existing operation need to the knot of the implant so as to solveStructure integrality is compromised, and improves the efficiency and success rate of operation.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existingThere is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this hairsSome bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be withOther accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation that the application is implemented；
In Fig. 1,1, neck it is key, 2, neck section, 3, near-end, 4, distal end, 5, implant cavity, 6, implant, 7, adjustable track, 8,Titanium is followed closely, and 9, fix bar, 10, lubricating fluid, 11, base, 12, regulating sleeve, 13, adjustable plate, 14, secondary spring.
Embodiment
It is simple in construction the invention provides a kind of modular necks for orthopaedic devices, it is easy to use, neck will be implanted intoModularized design is carried out, the adjustment for realizing height, offset and torsion angle that can be independent, so as to solve in existing operationThe device of regulation implant height needs to compromise to the structural intergrity of the implant, improve operation efficiency and intoPower.
In order to be better understood from above-mentioned technical proposal, below in conjunction with Figure of description and specific embodiment to upperTechnical scheme is stated to be described in detail.
As shown in figure 1, a kind of modular necks for orthopaedic devices described in the present embodiment, including key 1 He of neckNeck section 2, described neck backbone 1 are connected with neck section 2, and described neck section 2 is different provided with difference according to the size of user's boneModel, each described neck section 2 includes realizing the near-end 3 of connection with neck backbone 1 and realized with other bones solidFixed distal end 4, the center line of described near-end 3 realize and connected that described neck section 2 can surround neck with the center line of neck backbone 1Bone backbone 1 realizes any one of height, offset and torsion angle.
Wherein, in actual applications, key 1 inner part drilling of described neck is provided with the drilling of suitable dimension, is provided with drillingImplant cavity 5, described implant cavity 5 are made of biomaterial, and implant cavity 5 has the characteristics that high intensity, no conflict reaction.
Wherein, in actual applications, implant 6 is provided with described implant cavity 5, described implant 6 is spherical, implantationBody 6 is made using titanium alloy etc materials.
Wherein, in actual applications, the described both sides of implant cavity 5 are provided with adjustable track 7, and adjustable track 7 is entered by titanium nail 8Row is fixed, and the described both ends of implant 6 are welded with fix bar 9.
Wherein, in actual applications, described fix bar 9 is located in adjustable track 7 and can carry out height along adjustable track 7Degree adjustment, described fix bar 9 cannot carry out height regulation after being fixed in a certain position of adjustable track 7, can carry out partiallyTransposition section.
Wherein, in actual applications, lubricating fluid 10 is filled with the space between described implant cavity 5 and implant 6.
Wherein, in actual applications, neck section length adjuster is provided between described neck backbone 1 and neck section 2, it is describedNeck section length adjuster include base 11, regulating sleeve 12 and adjustable plate 13, described adjustable plate 13 can be along adjusting setCylinder 12 short transverses motion.
Wherein, in actual applications, secondary spring 14 is provided between described base 11 and adjustable plate 13.
Wherein, in actual applications, described secondary spring 14 is with base 11 to be fixedly connected, and secondary spring 14 is with adjustingTo be flexibly connected, adjustable plate 13 can be rotated plate 13 in regulating sleeve 12.
The above described is only a preferred embodiment of the present invention, any formal limitation not is made to the present invention, thoughSo the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any to be familiar with this professional technology peopleMember, without departing from the scope of the present invention, when the technology contents using the disclosure above make a little change or modificationFor the equivalent embodiment of equivalent variations, as long as being the content without departing from technical solution of the present invention, the technical spirit according to the present inventionAny simple modification, equivalent change and modification made to above example, in the range of still falling within technical solution of the present invention.