CN201492489U - Spine dynamic supporting and fixing system - Google Patents

Abstract

The utility model relates to a spine dynamic supporting and fixing system which is applied in reconstructing spine functions and simulating normal spine activity functions, can serve as a universal dynamic micro-increment supporting spine joint forming and fixing device, and is applicable in treating lumbar intervertebral disc protrusion, lumbar spinal stenosis and other diseases. The spine dynamic supporting and fixing system comprises a pressing nut (1), a screw cap ring (2), a fixed pressing block (3), a connector (4) and a dynamic ball screw (5), and is characterized in that the head of the dynamic ball screw (5) is a hexagonal hole, the upper half part thereof is spherical, and the lower half part thereof is a round table; the connector (4) is in a hollow structure, the upper part thereof is a U-shaped groove and partially provided with thread, and the lower part thereof is a step hole and a spherical surface; and a platform and a round table hole are connected below the spherical surface. First, the depth and the direction that the ball screw is implanted in are determined, a hole is drilled, and the ball screw is clamped and inlaid into the spine body; and an orthopedic rod and the screw cap ring (2) are put in, the orthopedic rod is pre-bent, and other screws are implanted, the nut is screwed in and presses to a locking position, so as to fix the system.

Description

Spinal column dynamic support fixed system

Technical field

This utility model relates to a kind of spinal column dynamic support fixed system, being applied in spinal function rebuilds, simulate normal spinal column movable function, can make the spinal joint shaping fixture that the dynamic little increment of universal type supports, be applicable to diseases such as treatment prolapse of lumbar intervertebral disc and lumbar spinal stenosis.

Background technology

Prolapse of lumbar intervertebral disc and lumbar spinal stenosis are commonly encountered diseases, frequently-occurring disease, and its symptom mainly comprises lumbago and lower limb radiating pain, the horse hair syndrome can occur when serious, have a strong impact on patient's work and social life ability.

In modern times operation property treatment, adopting way of escape amalgamation fixing operation, the target of operation when extracing outstanding intervertebral disc and enlarging narrow nerve root canal is fixing the fusion to reach stable.Along with to the deepening continuously of spinal column physiological function research, find the operation of prolapse of lumbar intervertebral disc and lumbar spinal stenosis go simultaneously spinal fusion fixing after, fraud is much larger than profit.Traditional tetanic formula is fixedly in the fusion, employed fixed system, and in its inner fixer, key is a pedicle screw, early stage pedicle nail is an integral body, in case after implanting, the orthopedic rod that is connected, also fixing thereupon, one-tenth is rigidly connected; And its improved pedicle screw, main component can be done the swing of certain angle by adapter and button, the person that can make the operation technique, behind pedicle screw, still can adjust to preferred angle, and after in a single day orthopedic rod being fixed, then can't adjust again orthopedic rod, still belong to straight formula and fix, can't guarantee the spinal column activity in the controlled range.

Reach stable after the spinal fixation, but the movable function of vertebra lost simultaneously also, this is again the common cause that causes lumbago and skelalgia.Therefore, clinically to traditional tetanic formula fixedly fusion make improvement very urgent requirement arranged always.At present domestic not createing as yet meets normal vertebra movable function, can make the spinal joint shaping fixture that the dynamic little increment of universal type supports.

Summary of the invention

This utility model under the prerequisite that keeps the prior art advantage, overcomes its drawback just, have structure rationally, simple operation, spinal rod fixing after, the nail body can be made the advantage that suitably swing realizes micro-universal type swing within the specific limits.

The technical solution of the utility model is as follows:

Spinal column dynamic support fixed system, by clamp nut (1), head of a nail circle (2), fixedly briquetting (3), adapter (4) and dynamically button (5) form, it is characterized in that: dynamically button (5) head is a hexagonal hole, and head the first half is a spheroid, and its latter half is round platform design (being commonly called as " elderly person for whom a birthday celebration is being held's head ") wide at the top and narrow at the bottom; Adapter (4) is a hollow structure, and interior top is a U type groove, and is screwed hole partly, and U type groove bottom is a dome shape, and sphere top is stepped hole, and the sphere bottom connects a platform and round platform hole, and adapter outer surface downside has two symmetrical apertures.

Dynamic button (5): head the first half is a spheroid, its the latter half is round platform design (being commonly called as " elderly person for whom a birthday celebration is being held's head ") wide at the top and narrow at the bottom, its round platform part cooperates with the Internal Spherical Surface and the sphere upper step hole of adapter bottom, and the different matched in clearance that it produces when different angles produces certain frictional force, under its active force, make it will control the certain angle of swing in the scope, for reaching the purpose of " dynamically universal ", load force F with the mathematic(al) mode of movable angle Ψ is:

∫ (F)=∫ (Ψ)=G+K _iΨ _iWhen Ψ=0～5 is spent, K=0; G=15N;

When Ψ=5～15 are spent, the K=constant;

When Ψ＞15 were spent, K=was enough big;

Dynamically button (5) can go out plurality of specifications according to its diameter, Design of length, selects for use during for operation.

Adapter (4): the outer surface downside has two symmetrical holes, and is corresponding with the briquetting outside two apertures, and briquetting is fixed in the adapter, and is convenient to nail holding device and holds and get; U type groove bottom is a dome shape, sphere top is stepped hole, the bottom connects a platform and round platform hole, and it cooperates with button, makes its orthopedic relatively rod, certain transitional gap is arranged, within the specific limits, when orthopedic rod is subjected to a certain active force, can suitably swing, required active force during swing increases with the increase of angle; The internal whorl hole cooperates with clamp nut (1), puts into orthopedic rod, puts into head of a nail circle (2), is screwed into clamp nut (1), makes dynamic button (5) under the active force of orthopedic rod, realizes angle swinging in the certain limit, realizes the function of micro-universal type swing.

By diagnosis such as CT or X-ray vertebra disease before the art, implement way of escape amalgamation fixing operation: the intervertebral disc and the vertebral body sections of excision or cleaning damage, determine that according to patient main suit and diagnostic result institute's fixed-segment, used implant comprise the size and the quantity of dynamic button (5).At first determine the degree of depth and orientation that dynamic button (5) is implanted, on vertebral body, implement boring, follow closely spanner and hold and get, orthopedic rod is put into the briquetting groove, put into head of a nail circle (2), the orthopedic rod of pre-bending with holding; Use the same method and implant other several pieces, treat whole pretensions after, be screwed into clamp nut (1) successively, be pressed to final locked position, realize the fixing of system.

Lumbago even lower limb pain are relevant to the unusual transmission of load with regression lumbar intervertebral disc and spinal joint.Thereby set up a normal lumbar vertebra load transfer mode, and can obtain encouraging result, reach the purpose of the spinal joint shaping fixture of the dynamic little increment support of universal type.It both can protect the lumbar intervertebral disc of regression and the normal activity of spinal joint; lumbar intervertebral disc and the spinal joint activity that is subjected to operation wound can be controlled in normal movement locus and the range of movement again; eliminated the abnormal movement of pathological changes spinal segments; protection and biography have been replaced the load of lumbar intervertebral disc and spinal joint; change the load pattern of sections in the spinal column activity, thereby reached therapeutic purposes.

Spinal column dynamic support fixed system is when diseases such as treatment prolapse of lumbar intervertebral disc and lumbar spinal stenosis, and simple operation practicality, damage are little, are suitable for the orthopaedics clinical application.

Description of drawings

Fig. 1 is a population structure sketch map of the present utility model;

Fig. 2 is clamp nut of the present utility model (a 1) structure chart;

Fig. 3 is head of a nail circle of the present utility model (a 2) structure chart;

Fig. 4 is fixedly briquetting of the present utility model (a 3) structure chart;

Fig. 5 is adapter of the present utility model (a 4) structure chart;

Fig. 6 is dynamic button (5) structure chart of utility model.

The specific embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

Spinal column dynamic support fixed system, by clamp nut (1), head of a nail circle (2), fixedly briquetting (3), adapter (4) and dynamically button (5) form, it is characterized in that: dynamically button (5) head is a hexagonal hole, head the first half is a spheroid, and its latter half is round platform design (being commonly called as " elderly person for whom a birthday celebration is being held's head ") wide at the top and narrow at the bottom; Adapter (4) is a hollow structure, and interior top is a U type groove, and inside is the part screwed hole, and U type groove bottom is a dome shape, and sphere top is stepped hole, and the bottom connects a platform and round platform hole, and adapter outer surface downside has two symmetrical apertures.At first determine the degree of depth and orientation that dynamic button (5) is implanted, on vertebral body, hole, hold and get, make in its embedding vertebral body with holding the nail spanner; Orthopedic rod is put into the briquetting groove, put into head of a nail circle (2), the orthopedic rod of pre-bending; Use the same method and implant other several pieces, treat whole pretensions after, be screwed into clamp nut (1) successively, be pressed to final locked position, realize the fixing of system.

Claims (1)

1. spinal column dynamic support fixed system, by clamp nut (1), head of a nail circle (2), fixedly briquetting (3), adapter (4) and dynamically button (5) form, it is characterized in that: dynamically button (5) head is a hexagonal hole, head the first half is a spheroid, its the latter half is round platform design wide at the top and narrow at the bottom, is commonly called as " elderly person for whom a birthday celebration is being held's head "; Adapter (4) is a hollow structure, and interior top is a U type groove, and is screw thread partly, and U type groove bottom is a dome shape, and sphere top is stepped hole, connects a platform and round platform hole under the sphere, and adapter outer surface downside has two symmetrical apertures.

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