CN201727574U

CN201727574U - Paraspinal universal dynamic auxiliary stabilizer

Info

Publication number: CN201727574U
Application number: CN2010202855849U
Authority: CN
Inventors: 李照文
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-07-31
Filing date: 2010-07-31
Publication date: 2011-02-02
Anticipated expiration: 2020-07-31

Abstract

The utility model relates to a paraspinal universal dynamic auxiliary stabilizer and belongs to the field of in-body implants of medical instruments. The stabilizer consists of a dual U-shaped spring leaf, a fixed positioning plate, a movable positioning plate, and a polyethylene linear, wherein one side of the dual U-shaped spring leaf is provided with the fixed positioning plate; and the other side is semi-spiral and provided with the movable positioning plate through a movable positioning plate chute. The dual U-shaped spring leaf is provided thereon with the polyethylene linear and a baffle; and a fixing hole is formed on the fixed positioning plate and the movable positioning plate respectively. Through the buffering function of the dual U-shaped spring leaf and the polyethylene linear as well as the rotation and left/right side bending of the U-shaped spring leaf of the semi-spiral section on a coronal position through the chute, solved are problems present in conventional paraspinal stabilizers that movements of a spine in all directions or elastic limit within a movement range cannot be kept, or paraspinal and supraspinal ligaments shall be sacrificed and the like. The paraspinal universal dynamic auxiliary stabilizer has the advantages of simple structure, small injury, convenient implantation, reliable fixation, strong metal fatigue resistance, quick postoperative recovery, and good effects.

Description

The other universal dynamically auxiliary regulator of sour jujube

Technical field:

This utility model relates to a kind of other universal dynamically auxiliary regulator of sour jujube of dual U-shaped band spiral, belongs to people's implants in vivo technical field of medical apparatus and instruments.

Technical background:

Along with the growth at people's age, lumbar vertebra can present natural regression in various degree, and the degenerated lumbar disease often has a strong impact on patient's daily life, have in addition lose self care ability, be the common disease of osteopathia section.Being reported in western countries according to foreign literature has 50% adult once to suffer from lumbago approximately, and wherein about half needs to go to a doctor; Need go annual 1 example of per approximately 1000 people of the degenerated lumbar disc disease patient of operative treatment in China.All the time, the Lumbar Fusion internal fixation is the main method of the serious degenerated lumbar disease of treatment by generally generally acknowledging, but there are many inevitable defectives in the converged fixed postoperative, can cause degeneration of adjacent seg-ments or aggravate already present spinal column degeneration.Some clinical observations and basic research have been found that internal fixation intensity is big more, and neighbouring section is prone to regression more.

Dynamically being implanted in of internal fixation system do not sacrificed under the stable at once prerequisite of spinal column its dynamic fixing, postoperative can disperse the load conduction of firm internal fixation, avoid stress shielding, the power of strutting that produces between sour jujube can produce relative back protruding at the operation sections, the ligamenta flava of invagination is oppositely opened to reduce its intrusion to canalis spinalis, increase vertebral canal volume, also can increase intervertebral foramina size, recover the load of disc height, unloading rear fibrous ring, reduce the little joint of corresponding sections load.Postoperative patient recovers rapidly, and relapse rate is low, and remissions such as pain are remarkable, but early ambulation, recovers daily life etc.Its indication is wider, comprises pathological changes such as degenerated spinal canal stenosis, intervertebral disc source property low back pain, facet syndrome, intervertebral disc prolapse and degeneration lumbar instability.

Dynamically vertebra joint internal fixation has at present: 1, displacement of anterior approach artificial intervertebral disk and artificial nucleus displacement; 2, way of escape non-fusion technology.Way of escape non-fusion technology is divided into again: internal fixation device for spreading between (1) spinous process; (2) the fixed dynamical stability device of pedicle; (3) zygapophysial joints replacement.Wherein the fixed dynamical stability device of anterior approach and pedicle, zygapophysial joints replacement all damage big, hemorrhage many, operation risk is high, comparatively speaking, the dynamic fixing wound is little between sour jujube, operation is simple relatively, so development is rapid; But the implantation of inside-fixture must remove or destroy one or more parts of lumbar vertebra rear ligament complex (PLC) between sour jujube, all systems must sacrifice interspinal ligaments, can weaken between sour jujube axially strutting the biological elasticity antagonism of power, biomechanics is caused certain adverse effect, also have the scholar to think that supraspinal ligament is the stable key structure of the special mechanics of dimension in (PLC), sacrifices supraspinal ligament and can cause more adverse influence to biomechanics; The other regulator of sour jujube is not then sacrificed on the sour jujube or interspinal ligaments, need not remove any soft tissue and osseous tissue, does not still have this approved product at present on the market.

The activity that the normal condition lower lumbar spine can carry out have fore-and-aft direction anteflexion, after stretch the lateroflexion of left and right directions, the rotation on crown position and the sagittal plain, and the circumduction of effect formation simultaneously between the above-mentioned all directions.Use inside-fixture between various dynamic spinous process at present, what have fails preservation spinal movable on all directions or can not accurately regulate the scope that struts between sour jujube in art, or can not on all directions, give full play to the elasticity assosting effect and carry out the elastic limit of range of activity, or sacrificed shortcomings such as interspinal ligaments, supraspinal ligament, all be difficult to guarantee very low complication and good long-term effect.

Summary of the invention:

The purpose of this utility model is, providing a kind of is made of the spiral dual U-shaped shell fragment of an end band, a stationary positioned plate and a movable positioning plate, be fixed on the human body spinous process by the location-plate on it, by the double buffering of dual U-shaped shell fragment, realize spinal column stretching on sagittal plain, bend, rotation and left and right sides lateroflexion are come of age the active elastic limit of all directions such as shape position rotation.Has advantage simple in structure, that implantation is convenient, reliable, the anti-metal fatigue of fixation is strong, wearing and tearing are little.Having solved existing interbody stabilizer device can not the activity of preservation spinal on all directions, can not on all directions, give full play to the elasticity assosting effect and carry out the elastic limit of range of activity, can not in art, accurately regulate and strut distance between sour jujube, or sacrifice interspinal ligaments, supraspinal ligament, and adopt rope, bundling belt mode fixedly to be prone to the other universal dynamically auxiliary regulator of sour jujube of wearing and tearing, relaxation.

This utility model is to realize above-mentioned purpose by following technical solution:

The other universal dynamically auxiliary regulator of this sour jujube is made of dual U-shaped shell fragment, stationary positioned plate, movable positioning plate and polyethylene liner, it is characterized in that: a side of dual U-shaped shell fragment is manufactured with the stationary positioned plate, the opposite side of dual U-shaped shell fragment is manufactured with the movable positioning plate chute, the movable positioning plate that can slide in chute is installed in the movable positioning plate chute, on the middle connecting plate of dual U-shaped shell fragment polyethylene liner is installed, the middle connecting plate two ends of dual U-shaped shell fragment are manufactured with baffle plate, are manufactured with small front apron on the baffle plate; Be manufactured with fixing hole on described stationary positioned plate and the movable positioning plate, this U-shaped shell fragment that has the movable positioning plate chute in the dual U-shaped shell fragment is half-spiral.

This utility model beneficial effect compared with prior art is:

The other universal dynamically auxiliary regulator of this sour jujube by the dual U-shaped shell fragment elasticity and the dual U-shaped shell fragment on the cushioning effect and the slip of movable positioning plate in the movable positioning plate chute of polyethylene liner, realize stretching, bending and rotation on the sagittal plain, and spinal column left and right sides lateroflexion and rotation on crown position.Solved regulator between existing sour jujube can not preservation spinal movable on all directions or carry out the elastic limit of all directions range of activity, maybe to sacrifice the problem of interspinal ligaments, supraspinal ligament.Has advantage simple in structure, that implantation is convenient, reliable, the anti-metal fatigue of fixation is strong, wearing and tearing are little, the postoperative physical recovery is fast, effective.

Description of drawings:

Fig. 1 is the structural representation of the other universal dynamically auxiliary regulator of sour jujube;

Fig. 2 is the other universal structural representation of dynamically assisting after polyethylene liner and movable positioning plate are removed in the regulator of sour jujube;

Fig. 3 is the structural representation of movable positioning plate;

Fig. 4 is the structural representation of polyethylene liner;

Fig. 5 is the other universal structural representation of dynamically assisting after polyethylene liner is removed in the regulator of sour jujube.

Among the figure: 1, dual U-shaped shell fragment, 2, the stationary positioned plate, 3, movable positioning plate, 4, polyethylene liner, 5, fixing hole, 6, small front apron, 7, the movable positioning plate chute, 8, baffle plate, 9, fixing lug boss, 10, locating hole.

The specific embodiment:

The other universal dynamically auxiliary regulator of this sour jujube is made of dual U-shaped shell fragment 1, stationary positioned plate 2, movable positioning plate 3 and polyethylene liner 4.One side of dual U-shaped shell fragment 1 is manufactured with stationary positioned plate 2, the opposite side of dual U-shaped shell fragment 1 is manufactured with movable positioning plate chute 7, be half-spiral at this a part of U-shaped shell fragment that has movable positioning plate chute 7 in the dual U-shaped shell fragment 1, the movable positioning plate 3 that can slide in chute is installed in the movable positioning plate chute 7, and movable positioning plate 3 can make half-spiral U-shaped shell fragment partly rotation and left and right sides lateroflexion on crown position by movable positioning plate chute 7.Be manufactured with locating hole 10 on the middle connecting plate of dual U-shaped shell fragment 1, be manufactured with the fixing lug boss 9 supporting on the polyethylene liner 4 with locating hole 10, one side of polyethylene liner 4 has opening, opening by polyethylene liner 4 is inserted on connecting plate, fixing by fixing lug boss 9 again, the middle connecting plate two ends of dual U-shaped shell fragment 1 are manufactured with baffle plate 8, prevent that polyethylene liner 4 is to the both sides slippage, be manufactured with small front apron 6 on the baffle plate 8 in addition, after polyethylene liner 4 installations are appropriate, small front apron 6 bendings are made it to be attached to the surface of polyethylene liner 4, further prevent polyethylene liner 4 slippages, polyethylene liner 4 can the both sides uniform thickness, and is also can a side thick, one side is thin, and the polyethylene liner 4 of passing through the different model that is equipped with in the art is to strut the closed scope of distance and shell fragment between the accuracy controlling sour jujube.Be manufactured with fixing hole 5 on stationary positioned plate 2 and the

movable positioning plate

3,1～3 of fixing hole 5 general making.The edge of above-mentioned dual U-shaped shell fragment 1, stationary positioned plate 2, movable positioning plate 3, polyethylene liner 4 and baffle plate 8 all is made into arc transition (referring to accompanying drawing 1～5).

When degenerated lumbar disease patient's human body is implanted in the other universal dynamically auxiliary regulator of this sour jujube, stationary positioned plate 2 and movable positioning plate 3 are fixed on the upper and lower spinous process by bolt, screw or the tinsel etc. of fixing hole 5 usefulness with material, make upper and lower spinous process realize that elasticity connects by dual U-shaped shell fragment 1.When the strength of the upper and lower intervertebral of patient acts on stationary positioned plate 2 and the movable positioning plate 3, by stretching, bending and rotation on the elasticity realization sagittal plain of dual U-shaped shell fragment 1; Movable positioning plate 3 can make half-spiral U-shaped shell fragment partly rotation and left and right sides lateroflexion on crown position by movable positioning plate chute 7.Can accurately control the closed scope that struts distance between sour jujube, regulates dual U-shaped shell fragment 1 by the polyethylene liner 4 that on the middle connecting plate of dual U-shaped shell fragment 1, is equipped with different model.

Polyethylene liner 4 can be made further buffering to dual U-shaped shell fragment 1, and can reduce intermetallic wearing and tearing, dwindles the closed scope of dual U-shaped shell fragment 1, thereby reduces the elastic fatigue of dual U-shaped shell fragment 1.This piece shell fragment that links to each other with the stationary positioned plate of shell fragment 1 under the interior original state of body is inserted in the other regulator of this dual U-shaped sour jujube and the lower end of movable positioning plate 3 can contact with the polyethylene liner 4 on the middle connecting plate, be dual U-shaped shell fragment 1 when elastic deformation does not take place downward range of activity can be made as 0mm, do not utilize shell fragment 1 just can remain the effect that struts between sour jujube to play, further reduced the elastic fatigue of dual U-shaped shell fragment 1 yet.The suitable types of patient in the art is determined in the other regulator of serial dual U-shaped sour jujube that can pass through the different model that is equipped with in the art.Need not cut interspinal ligaments or supraspinal ligament in the art.Need not remove any soft tissue and osseous tissue.The other universal dynamically auxiliary regulator of this sour jujube can be used for being used for bilateral after other one-sided or two combinations of sour jujube to be fixed, also can a plurality of combinations be used for multi-segmental and fix so as to protect on the sour jujube better, rear structure such as interspinal ligaments.

Claims

1. the other universal dynamically auxiliary regulator of a sour jujube, it is made of dual U-shaped shell fragment (1), stationary positioned plate (2), movable positioning plate (3) and polyethylene liner (4), it is characterized in that: a side of dual U-shaped shell fragment (1) is manufactured with stationary positioned plate (2), the opposite side of dual U-shaped shell fragment (1) is manufactured with movable positioning plate chute (7), and the movable positioning plate (3) that can slide in chute is installed in the movable positioning plate chute (7); Polyethylene liner (4) is installed on the middle connecting plate of dual U-shaped shell fragment (1), and the middle connecting plate two ends of dual U-shaped shell fragment (1) are manufactured with baffle plate (8), are manufactured with small front apron (6) on the baffle plate (8); Be manufactured with fixing hole (5) on described stationary positioned plate (2) and the movable positioning plate (3).