CN104905860A - Memory alloy vertebral plate distraction fixator and use method thereof - Google Patents
Memory alloy vertebral plate distraction fixator and use method thereof Download PDFInfo
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- CN104905860A CN104905860A CN201410739954.4A CN201410739954A CN104905860A CN 104905860 A CN104905860 A CN 104905860A CN 201410739954 A CN201410739954 A CN 201410739954A CN 104905860 A CN104905860 A CN 104905860A
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Abstract
The invention discloses a vertebral plate distraction fixator which is used for fixing the spine and composed of a streamline reversely arcuate body and two vertebral plate hooks at the two ends of the reversely arcuate body. The vertebral plate distraction fixator is of an integrated structure, and the vertebral plate hooks are of U-shaped structures with reversely outwards openings. The vertebral plate distraction fixator is made of medical memory alloy. When in use, the vertebral plate distraction fixator is at low temperature, the reversely arcuate body is bent to be arcuate, the distance between the two vertebral plate hooks is shortened, the vertebral plate hooks can be expanded and opened, and the vertebral plate hooks can be put into lesion intervertebral tissue and/or the vertebral plate upper edge of a lesion lower vertebra and the vertebral plate lower edge of an upper vertebra. Then, the vertebral plate distraction fixator can contract the vertebral plate hooks in water of 40 DEG C by means of the memory effect of shape memory alloy, and the vertebral plate hooks are effectively fixed to the vertebral plate upper edge of the lower vertebra and the vertebral plate lower edge of the upper vertebra. Meanwhile, the arcuate body contacts, recovers, and applies outward distraction force to the lesion intervertebral tissue and/or adjacent vertebra sections of the lesion vertebra, and therefore the purpose of fixing the lesion intervertebral tissue and/or distracting and fixing the adjacent vertebra sections of the lesion vertebra is achieved.
Description
Technical field: the technical field that the present invention relates to medical apparatus and instruments, particularly relates to the device for stabilizing spine vertebral member and using method
Background technology:
The damage of Thoracolumbar disk bone structure and disease cause the impaired major reason even lost of human body pain, function of nervous system and motor function.Spine arthrodesis is a kind of basic operative mode for the treatment of other structural damages of waist Thoracolumbar disk bone and disease at present.Its principle is centered by lesion; from between the upper normal vertebral body in disease damage district to the next normal vertebral body, do bone grafting be connected with the intersegmental generation bone of internal fixation envoy; make it to be fused on mechanics as a whole; thus reach treatment spinal column disease damage; eliminate pain; prevent deformity, reconstruction of stability and the spinoneural object of protection.And wherein pedicle internal fixators associating Invasive lumbar fusion device modus operandi is interbody fusion mode the most general at present, by the internal fixtion of pedicle screw to cone, interpyramidal relative motion is merged in restriction, can improve the success rate of spinal fusion.But pedicle internal fixators also result in stress shielding while providing enough support forces, easily cause the adverse consequencess such as bone dissolving, osteoporosis.And, owing to adding the fixing of pedicle nail, not only considerably increase the wound of operation process, add the probability of postoperative infection, nerve injury; Also considerably increase operating difficulty, extend operating time and intraoperative blood loss, and bring heavier financial burden to patient.In addition, owing to limiting the activity of lumbar vertebra, also easily cause stiff back of the body syndrome, or accelerate the regression of neighbouring section, significantly reduce patient, particularly the quality of life of young patient.
For the deficiency of existing pedicle internal fixators mode, the object of the invention is to be further improved existing fixed form, provide that a kind of risk is less, the device for spinal fixation vertebral member of more convenient operation, and its using method is provided.
Summary of the invention
The object of the present invention is to provide for strutting holder and using method thereof to pathological interspinal tissue (3) and/or sick vertebra (3 ') the memorial alloy vertebral plate that vertebrae is fixed up and down in spine arthrodesis.
The vertebral plate fixing for vertebrae struts holder:
A, described vertebral plate vertebral plate strut holder (1) containing streamlined reverse arc shape main body (11), vertebral lamina hook (12);
B, described vertebral lamina hook (12) are positioned at the two ends of streamlined arciform main body (11), and outward opening is contrary;
C, described vertebral lamina hook (12) side are seen as U-shaped, and front is seen as E shape; Jointly U-shaped vertebral lamina hook is formed by two, both sides, 1 font positive stop strip (12-1) and a middle L shape hook (12-2);
D, described vertebral plate strut holder (1) and adopt medical marmem sheet material to make through cutting---molding---sizing, integrated overall structure;
E, described vertebral plate strut the lower edge (51-1) that holder (12) is placed in the upper limb (41-1) of the vertebral plate (41) of the next vertebral body (4) of disease vertebra (2) and/or pathological interspinal tissue (3) and the vertebral plate (51) of upper vertebral body (5).
F, described pathological interspinal tissue (3) refer to be damaged and/or after regression interspinal tissue as intervertebral disc, facet joint and pedicle isthmus.
G, described sick vertebra (3 ') are finger injuries and/or the vertebral body of pathological change have occurred because of a variety of causes.
Further, the outward opening of described vertebral lamina hook (12) is contrary.Because the opening of described vertebral lamina hook (12) takes outwards contrary design, therefore, when described vertebral lamina hook (12) is placed in lower edge (51-1) of the upper limb (41-1) of the vertebral plate (41) of pathological interspinal tissue (3) and/or the next vertebral body of sick vertebra (3 ') (4) and/or the upper vertebral body of pathological interspinal tissue (5) vertebral plate (51), utilize the restoring force of memorial alloy, tighten up described vertebral lamina hook (12) to make it to be fixed on vertebral plate, make the main body (11) bent restore simultaneously, just can apply outside distracting force to pathological interspinal tissue (3) and/or sick vertebra (3 '), realize strutting of the adjacent vertebral bodies of pathological interspinal tissue (3) and/or sick vertebra (3 ') fixing.
Described vertebral lamina hook (12) side is seen as U-shaped, and front is seen as E shape, jointly forms U-shaped vertebral lamina hook by two, both sides, 1 font positive stop strip (12-1) and a middle L shape hook (12-2); When described vertebral lamina hook (12) being inserted lower edge (51-1) of the upper limb (41-1) of vertebral plate (41) of pathological interspinal tissue (3) and/or the next vertebral body of sick vertebra (3 ') (4) and the vertebral plate (51) of upper vertebral body (5), 1 font positive stop strip (12-1) is positioned at the outside of the vertebral plate (41) of the next vertebral body (4) and the vertebral plate (51) of upper vertebral body (5), and a middle L shape hook (12-2) is positioned at the inner face of the vertebral plate (41) of the next vertebral body (4) and the vertebral plate (51) of upper vertebral body (5).
Described vertebral lamina hook (12) is U-shaped hook structure, is lath-shaped material excision forming, has smooth surface.Because described vertebral lamina hook (12) is U-shaped hook structure, therefore, when described vertebral lamina hook (12) being inserted lower edge (51-1) of the upper limb (41-1) of the vertebral plate (41) of pathological interspinal tissue (3) and/or the next vertebral body of sick vertebra (3 ') (4) and the vertebral plate (51) of upper vertebral body (5), the lower edge (51-1) of the upper limb (41-1) of the vertebral plate (41) of the next vertebral body (4) and the vertebral plate (51) of upper vertebral body (5) can be hooked easily.And, due to described vertebral lamina hook (12), there is smooth surface, therefore, when lower edge (51-1) of the vertebral plate (51) of the upper limb (41-1) and upper vertebral body (5) of inserting the next vertebral body (4) vertebral plate (41), efficiently avoid the unexpected injury because surface spikes causes tissue.
Medical marmem manufacture is adopted because described vertebral plate struts holder (1), therefore, utilize the memory effect of marmem, during use, measure after special dilator struts lamina gap, get and strut holder (1) than vertebral plate described in the large 2-4mm of measured value, at low temperatures, described reverse arc shape main body (11) is bent into arciform, the distance of two vertebral lamina hooks can be shortened to install, described vertebral lamina hook (12) is expanded, open, described vertebral lamina hook (12) to be inserted the vertebral plate upper limb (41) of described pathological interspinal tissue (3) and/or the next vertebral body of sick vertebra (3 ') (4) and the vertebral plate upper limb (51-1) of the upper vertebral body of pathological interspinal tissue (5), and at high temperature, 40 DEG C of warm water are used in general use procedure, marmem can shrink, utilize the restoring force of marmem, the vertebral lamina hook (12) opened shrinks, described vertebral lamina hook (12) is fixed on effectively on vertebral plate (41) upper limb (41-1) and vertebral plate (51) lower edge (51-1), be bent into arciform described reverse arc shape main body (11) simultaneously and revert back to original state, outside distracting force is applied to pathological interspinal tissue (3) and/or sick vertebra (3 ') adjacent segment vertebral body (4) (5), thus reach and strut fixing object between described pathological interspinal tissue (3) and/or sick vertebra (3 ') adjacent segment vertebral body (4) (5).
The vertebral plate fixing for vertebra of the present invention struts holder (1) and is made up of streamlined reverse arc shape main body (11) and the vertebral lamina hook (12) that is respectively in reverse arc shape main body (11) two ends.The U-shaped structure that described vertebral lamina hook (12) is outward opening.Described vertebral plate struts holder (1) and is manufactured by medical marmem.At low temperatures, described reverse arc shape main body (11) is bent into arciform, shorten the distance of two vertebral lamina hooks, described vertebral lamina hook (12) can expand, open, and described vertebral lamina hook (12) can be inserted vertebral plate (41) upper limb (41-1) of pathological interspinal tissue (3) and/or the next vertebral body of sick vertebra (3 ') (4) and vertebral plate (51) lower edge (51-1) of upper vertebral body (5) easily.Under 40 degree of water temperatures, utilize the memory effect of marmem, described vertebral lamina hook (12) can be tightened up, described vertebral lamina hook (12) is fixed on effectively on vertebral plate (51) lower edge (51-1) of described the next vertebral body (4) vertebral plate (41) upper limb (41-1) and described upper vertebral body (5), described arciform main body (11) is shunk simultaneously, revert back to original state, outside distracting force is applied to pathological interspinal tissue (3) and/or sick vertebra (3 ') adjacent segment vertebral body (4) (5), thus reach and strut fixing object between described sick vertebra (2) and/or pathological interspinal tissue (3) adjacent segment vertebral body (4) (5).
Accompanying drawing explanation
Fig. 1 be under the vertebral plate fixed for lumbar vertebra of the present invention struts holder normality and high temperature time reply after three-dimensional structure diagram.
Fig. 1-1 is master (side) view of Fig. 1.
Fig. 1-2 is the left and right view of Fig. 1.
Fig. 1-3 is top views of Fig. 1.
The three-dimensional structure diagram when vertebral plate fixed for lumbar vertebra of the present invention struts that holder is softened to be expanded when Fig. 2 is low temperature.
Fig. 2-1 is master (side) view of Fig. 2.
Fig. 2-2 is left and right views of Fig. 2.
Fig. 2-3 is top views of Fig. 2.
Fig. 3 is the isomery three-dimensional structure diagram of the same race that the vertebral plate fixed for lumbar vertebra of the present invention struts holder.
Fig. 3-1 forms U-shaped vertebral lamina hook three-dimensional structure diagram jointly for a monolateral 1 font positive stop strip and another side L shape hook;
Fig. 3-2 forms U-shaped vertebral lamina hook three-dimensional structure diagram jointly by a middle 1 font positive stop strip and two, both sides L shape hook.
Fig. 4 is the operating diagram when vertebral plate of the present invention inserts the vertebral plate lower edge of the vertebral plate upper limb of the next vertebral body of pathological interspinal tissue and upper vertebral body under low temperature under strutting holder case of bending.
Fig. 5 is the operating diagram when vertebral plate of the present invention struts the vertebral plate lower edge of vertebral plate upper limb and the upper vertebral body of to fix the next vertebral body of pathological interspinal tissue after holder tightens up under high temperature.
Fig. 6 is the operating diagram when vertebral plate of the present invention inserts the vertebral plate lower edge of the vertebral plate upper limb of the next vertebral body of disease vertebra and upper vertebral body under low temperature under strutting holder open configuration.
Fig. 7 is the operating diagram when vertebral plate of the present invention struts the vertebral plate lower edge of the vertebral plate upper limb of the next vertebral body of to fix the next vertebral body of disease vertebra after holder tightens up and upper vertebral body under high temperature.
In above-mentioned figure:
1 struts holder for the vertebral plate fixing for vertebra, and 2 is pathological interspinal tissue for vertebral plate during low temperature struts the softened expanded state 3 of holder, and 3 ' is sick vertebra, and 4 is the next vertebral body, and 5 is upper cone; 6 is intervertebral foramina.
(11) be streamlined arciform main body; (12) be vertebral lamina hook, (12-1) is 1 font positive stop strip, (12-2) L shape hook; (41) be the next vertebral body vertebral plate, (41-1) is its vertebral plate upper limb; (51) be upper vertebral body vertebral plate, (51-1) is vertebral plate lower edge.
Detailed description of the invention
Embodiment 1: the vertebral plate fixing for lumbar vertebra for the present invention of intervertebral disc degeneration struts holder
With reference to figure 4 to Fig. 5, strut holder (1) for the vertebral plate that vertebra is fixing and adopt Medical memory alloy manufacture.Containing arciform main body (11), vertebral lamina hook (12); Described vertebral lamina hook (12) is positioned at the two ends of arciform main body (11).The upper limb (41-1) of the vertebral plate (41) of pathological interspinal tissue (3) the next vertebral body (4) can be inserted in described vertebral lamina hook (12) one end, and described vertebral lamina hook (12) other end can insert the lower edge (51-1) of the vertebral plate (51) of pathological interspinal tissue (3) upper vertebral body (5).
Further, described vertebral lamina hook (12) has the radian matched with described vertebral plate (41,51) outer surface.Therefore, when described vertebral lamina hook (12) inserts lower edge (51-1) of the upper limb (41-1) of the vertebral plate (41) of the next vertebral body (4) of pathological interspinal tissue (3) and the vertebral plate (51) of upper vertebral body (5), can mate well with the surface of vertebral plate (41), (51), can better to pathological interspinal tissue adjacent vertebral bodies be fixed.
Described vertebral lamina hook (12) has the contrary U-shaped hook structure of outward opening.Opening due to described vertebral lamina hook (12) takes outwards contrary U-shaped hook structure design, therefore, when described vertebral lamina hook (12) is placed in the upper limb (41-1) of the vertebral plate (41) of the next vertebral body (4) of pathological interspinal tissue, when described vertebral lamina hook (12) other end inserts lower edge (51-1) of the vertebral plate (51) of pathological interspinal tissue (3) upper vertebral body (5), can hook easily, and the described vertebral lamina hook (12) of outward opening design can apply outside support force to the adjacent vertebral bodies of pathological interspinal tissue (3) (4) (5), realization is fixing to strutting of adjacent vertebral bodies (4) (5) of pathological interspinal tissue (3).
Described vertebral lamina hook (12) has smooth surface, therefore, when described vertebral lamina hook (12) one end is placed in the upper limb (41-1) of the vertebral plate (41) of the next vertebral body (4) of pathological interspinal tissue, when described vertebral lamina hook (12) other end inserts lower edge (51-1) of the vertebral plate (51) of pathological interspinal tissue (3) upper vertebral body (5), efficiently avoid the unexpected injury because surface spikes causes tissue.
During use, measure after special dilator struts lamina gap; get and strut holder (1) than vertebral plate described in the large 2-4mm of measured value; described vertebral plate is strutted holder (1) and insert lower than in 4 degree of frozen water; described reverse arc shape main body (11) is bent into arciform; vertebral lamina hook (12) is opened, described vertebral lamina hook (12) is inserted respectively the vertebral plate upper limb (41-1) of pathological interspinal tissue (3) the next vertebral body (4) and the vertebral plate lower edge (51-1) (with reference to figure 4) of upper vertebral body (5).The restoring force of memorial alloy is utilized after intensification, tighten up described vertebral lamina hook (12) to make it to be fixed on vertebral plate, make the main body bent restore and produce support force simultaneously, complete between pathological interspinal tissue (3) adjacent segment vertebral body (4) (5) strut fixing.Reach the object (with reference to figure 5) of intervertebral disc reset spinal canal decompression.
Embodiment 2: the vertebral plate for the present invention of lumbar vertebra compression fracture and vertebra degenerated pathological changes struts holder
With reference to figure 6 and Fig. 7, the present embodiment is from the different of embodiment 1, and in the present embodiment, the vertebral plate of the present invention struts in the fixed object of holder is the vertebral plate upper limb (41-1) of the next vertebral body (4) of sick vertebra (3 ') and the vertebral plate lower edge (51-1) of upper vertebral body (5).
During use, measure after special dilator struts the vertebral plate upper limb (41-1) of the adjacent the next vertebral body (4) of disease vertebra and the vertebral plate lower edge (51-1) of upper vertebral body (5), get and strut holder (1) than vertebral plate described in the large 4-6mm of measured value, described vertebral plate being strutted holder (1) inserts lower than in 4 degree of frozen water, described reverse arc shape main body (11) is bent into arciform, vertebral lamina hook (12) is opened, described vertebral lamina hook (12) is inserted respectively the vertebral plate upper limb (41-1) of the next vertebral body of disease vertebra (3 ') (4) and the vertebral plate lower edge (51-1) (with reference to figure 6) of upper vertebral body (5).The restoring force of memorial alloy is utilized after intensification, tighten up described vertebral lamina hook (12) to make it to be fixed on vertebral plate, make the main body bent restore and produce support force simultaneously, complete and strut fixing between lumbar spondylosis vertebra (3 ') adjacent segment vertebral body (4) (5), reach the object (with reference to figure 7) of disease vertebra reset spinal canal decompression.
It should be noted that the open structure with illustrating can replace by the structure that other effect is identical, has the isoform of effect same as described in Figure 3 herein.The embodiment that the present invention simultaneously introduces not realizes exclusive architecture of the present invention.Although preferred embodiments of the present invention is introduced in this article and is illustrated; but those skilled in the art know and know that these embodiments are only illustrate; those skilled in the art can make countless changes, improvement and replacement; and the present invention can not be departed from; therefore, protection scope of the present invention should be limited according to the spirit and scope of appending claims of the present invention.
Claims (6)
1. strut holder for the vertebral plate that vertebra is fixing, it is characterized in that:
A, described vertebral plate strut holder (1) containing streamlined reverse arc shape main body (11), vertebral lamina hook (12);
B, described vertebral lamina hook (12) are positioned at the two ends of arciform main body (11), and outward opening is contrary;
C, described vertebral lamina hook (12) side are seen as U-shaped, and front is seen as E shape; Jointly U-shaped vertebral lamina hook is formed by two, both sides, 1 font positive stop strip (12-1) and a middle L shape hook (12-2);
D, described vertebral lamina hook (12) side are seen as U-shaped, and front is seen and be can be U-shaped; Jointly U-shaped vertebral lamina hook can be formed by a monolateral 1 font positive stop strip (12-1) and another side L shape hook (12-2);
E, described vertebral lamina hook (12) side are seen as U-shaped, and front is seen as E shape; Jointly U-shaped vertebral lamina hook is formed by a middle 1 font positive stop strip (12-1) and two, both sides L shape hook (12-2);
F, described vertebral plate strut holder (1) and adopt medical marmem sheet material to make through cutting---molding---sizing, integrated overall structure;
G, described vertebral plate strut the lower edge (51-1) that holder (1) is placed in the upper limb (41-1) of the vertebral plate (41) of the next vertebral body (4) of pathological interspinal tissue (3) and/or sick vertebra (3 ') and the vertebral plate (51) of upper vertebral body (5).
2. vertebral plate struts holder according to claim 1, it is characterized in that: the outward opening of described vertebral lamina hook (12) is contrary.
3. vertebral plate struts holder (1) according to claim 1, it is characterized in that described vertebral lamina hook (12) is for U-shaped hook structure, and side is seen as U-shaped, and front is seen as E font.
4. vertebral plate struts holder (1) according to claim 1, it is characterized in that: described vertebral lamina hook (12) is U-shaped hook structure, has smooth surface.
5. vertebral plate struts holder (1) according to claim 1, it is characterized in that: described vertebral lamina hook (12) U-shaped hook structure, for the integral structure of lath-shaped material cutting aftershaping, can bilateral excision forming be E font, jointly form U-shaped vertebral lamina hook (12) (with reference to figure 1) by two, both sides, 1 font positive stop strip (12-1) and a middle L shape hook (12-2); Also can monolateral excision forming be the U-shaped vertebral lamina hook (12) (with reference to figure 3-1) of a 1 font positive stop strip (12-1); Also jointly can form U-shaped vertebral lamina hook (12) (with reference to figure 3-2) by a middle 1 font positive stop strip (12-1) and two, both sides L shape hook (12-2); Be the isoform with effect same.
6. vertebral plate according to claim 1 struts holder (1), it is characterized in that: during use, described vertebral plate is strutted in the frozen water that holder (1) inserts lower than 4 degree, reverse arc shape main body (11) is bent into arciform, vertebral lamina hook (12) is opened, described vertebral lamina hook (12) is inserted respectively vertebral plate (41) upper limb (41-1) and upper vertebral body vertebral plate (51) lower edge (51-1) of pathological interspinal tissue (3) and/or the next vertebral body of sick vertebra (3 ') (4), after heating up, marmem can shrink, utilize the restoring force of marmem, the vertebral lamina hook (12) opened shrinks, described vertebral lamina hook (12) is fixed on effectively on vertebral plate (41) lower edge (41-1) and vertebral plate (51) upper limb (51-1), be bent into arciform described reverse arc shape main body (11) simultaneously and revert back to original state, outside distracting force is applied to pathological interspinal tissue (3) and/or sick vertebra (3 ') adjacent segment vertebral body (4) (5), thus reach and strut fixing object between described pathological interspinal tissue (3) and/or sick vertebra (3 ') adjacent segment vertebral body (4) (5).
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CN201410739954.4A CN104905860A (en) | 2014-12-04 | 2014-12-04 | Memory alloy vertebral plate distraction fixator and use method thereof |
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CN201410739954.4A CN104905860A (en) | 2014-12-04 | 2014-12-04 | Memory alloy vertebral plate distraction fixator and use method thereof |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109142036A (en) * | 2018-10-19 | 2019-01-04 | 浙江德康医疗器械有限公司 | A kind of vertebral plate fixed plate static system bending compression test method |
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2014
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109142036A (en) * | 2018-10-19 | 2019-01-04 | 浙江德康医疗器械有限公司 | A kind of vertebral plate fixed plate static system bending compression test method |
CN109142036B (en) * | 2018-10-19 | 2020-11-06 | 浙江德康医疗器械有限公司 | Static compression bending test method for vertebral plate fixing plate system |
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