CN2528400Y

CN2528400Y - Bar-interlink articular orthotast

Info

Publication number: CN2528400Y
Application number: CN 01222785
Authority: CN
Inventors: 阎德强
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-05-16
Filing date: 2001-05-16
Publication date: 2003-01-01
Anticipated expiration: 2011-05-16

Abstract

The utility model relates to a bar-interlink articular orthotast which is a technological breakthrough for an internal fixing instrument for spine reshaping. The bar-interlink articular orthotast provides a novel operative method for the clinical treatment of the scoliosis, the fracture and the dislocation of the spine, and is especially used for unaffecting the growth and development of the spine after the diorthosis of growing scoliosis. The utility model is formed by the mutual matching and connection of anti-rotary screws for the pedicle of vertebral arch, end nail sleeves, side nail sleeves, an axial bar, a sleeve type articulation, a bar type articulation and a cross link device. The utility model is characterized in that the internal fixing device can extend along an axial direction following the growing of the articulation. The utility model has the advantages of simple structure, easy manufacturing, convenient mounting, etc.; the utility model also has the advantages that in that the axial bar has scale marks, so an operator can directly view the scale and exactly grasp the adjusting strength of opening along the axial direction, the operative time can be shortened, and the operation can be finished safely and rapidly.

Description

Rod set joint straightener

This utility model belongs to medical category, exactly is a kind of internal fixation device that is used for Rachiocampis correction, the reduction of the fracture, and its name is called Rod set joint straightener.

In the prior art, no matter be scoliosis correcting, still in the reduction of the fracture fixed system, cause all still lacks the yardstick sign, and the intuitively distance between screw, range estimation by rule of thumb often up and down, so be difficult to accurately grasp height and the balance that the spinal column lateral symmetry struts, adjust down by imaging monitor, not only bother time-consumingly, suffer the hardship of X line between the doctors and patients unavoidably.In scoliotic rectification, especially for the treatment of growth property scoliosis, very long and postoperative can not prolong again again by the fixed sections of excellent hook, so hinder the growth of spinal column, but the whole up and down vertebra that is then strutted breaks off relations because of growth, causes operative failure.For the disadvantage in the inferior above-mentioned orthopaedics therapy becomes the difficult problem that clinical expectation is researched and solved.

The purpose of this utility model is to avoid the weak point of existing internal fixation device, and provide a kind of Rod set joint straightener, can effectively correct lateral bending, again can be and axially-extending thereupon the growth of spinal column, designed appliance meets biomechanical principle, simple in structure, fitting operation is convenient, most critical be the bar-interlink structure, mandrel rod has the yardstick sign, not only makes things convenient for the patient to select combination according to the operation needs, more importantly be to realize protruding rectification of pipe nipple side and the protruding rectification in back, belong to the intuitively mandrel rod yardstick that screw-type is connected and fixed and accurately adjust, prevent from excessively to strut and deficiency, non-threaded type is connected and fixed can be after surgery thereupon spinal growth and axially-extending.

This utility model adopts following measure to realize to achieve these goals: Rod set joint straightener is by the anti-pedicle screw that revolves, end nail cover, side nail cover, mandrel rod, the shell type joint, the bar type joint, the supporting protruding appliance of side that connects to form of cross-connecting apparatus, the two ends in the shell type joint mandrel rod that is linked in sequence, end nail cover, side nail cover, the anti-pedicle screw that revolves is formed the protruding appliance of meropodium side, the two ends in bar type joint are link nail cover respectively, side nail cover, the anti-pedicle screw that revolves is formed the protruding appliance of pipe nipple side, when Rachiocampis correction, in the pedicle of vertebral arch on whole up and down vertebra of skoliosis and protruding top, insert screw in advance, bar type joint or shell type joint are installed on the screw on protruding top, end nail cover, after side is followed closely cover and screw is connected up and down, pass the pedicle screw of joint supreme to the midline, in, following 3 when vertical, same again jack panel, side is protruding is promptly corrected.

This utility model can also adopt following measure to realize to achieve these goals: form the protruding appliance in back by mandrel rod, end nail cover and side nail cover, the anti-pedicle screw that revolves.One type of described mandrel rod is middle hexagon, two ends are positive and negative screwed plug, on the groove plane of its thread segment, also be shaped on the yardstick sign, be the yardstick mandrel rod, fixedly the time, intuitively yardstick realizes that by the rotation mandrel rod symmetry of both sides struts in order to the reduction of the fracture, the centre that the another kind of type of mandrel rod is a mandrel rod is the circle rectangle, its center is circle square hole, and this hole can connect cross-connecting apparatus and offside constitutes frame structure, can settle pedicle screw by this hole again.

This utility model can also adopt following measure to realize to achieve these goals: the solid nail piece of above-described end nail cover is positioned at the head end that connects cover, the same nail piece of side nail cover is positioned at the side that connects cover, it is a bodily form, it has from 0 ° ~ 30 ° top rake with nail piece and the longitudinal axis that connects cover, for following closely angle admittedly, in order to recover the physiology lordosis of spinal column, admittedly follow closely the hole for circular, the circle rectangle, the cover that connects of end nail cover is the tubular blind pipe, and the cover that connects of side nail cover is tubulose, and profile is circular, hexagon, its endoporus has the branch of round hole type and screw, and be complementary with the coupling part profile at mandrel rod two ends, connect and put a gong hole, just can be fixed together with mandrel rod by a screw.

This utility model can also adopt following measure to realize to achieve these goals: the joint arm in above-described shell type joint is a tubular blind pipe shape, its endoporus has the branch of round hole type and screw, the joint arm in bar type joint is a cylinder, ball and socket joint is circular, the center is a circular hole, its articular surface is zigzag, channel shaped and two one high and one low stairstepping semicircles, and the articular surface of two couplings is corresponding, can fix on together together with a nut by the anti-pedicle screw polyphone that revolves.

This utility model can also adopt following measure to realize to achieve these goals: the above-described anti-pedicle screw that revolves, one end is a set terminal, the other end is solid nail end, tool is followed closely on the clamping platform of end admittedly two semicircles in the initial part both sides of its bolt, the anti-projection of revolving of square, slope shape, and pedicle screw no longer rotated after the solid nail hole that puts with end nail cover and side nail was connected and fixed.

Below in conjunction with drawings and Examples this utility model is described further.

Accompanying drawing 1 is the structural representation of first embodiment of this utility model, the articular surface (11 of two of the shell type joint couplings in the drawings, 12) corresponding interlock and pedicle screw, nut is clamped and connected, the joint arm (10 in shell type joint, 13) with mandrel rod (8,14) tighten together by a nut (9) again, the middle circle square hole of mandrel rod connects cross-connecting apparatus (7), the other end is connected with end nail cover (4), it is with nail piece (2) and prevent that revolving pedicle screw (1) is clamped and connected, other end mandrel rod overlaps (17) socket with the side nail again, admittedly follow closely piece (18) and prevent that revolving pedicle screw is clamped and connected, the centre of mandrel rod (15) circle square hole connects a pedicle screw.

Accompanying drawing 2 is the structural representation of second embodiment of this utility model, the centre of mandrel rod is circle rectangle (23) among the figure, two ends are positive and negative screwed plug (22,24), one end is connected with the cover (20) that connects of end nail cover, admittedly follow closely piece and prevent that revolving pedicle screw is connected, the other end connects side nail cover (26) and the anti-pedicle screw that revolves, connect and put a raised platforms (21,25), be fixedly gong hole (46), can be fixed together by a screw and mandrel rod.

Accompanying drawing 3 is the structural representation of the 3rd embodiment of this utility model, and the centre of mandrel rod is hexagon (31) among the figure, and two ends are positive and negative screwed plug, and its two ends connect one respectively the anti-end nail cover (29) that revolves pedicle screw is installed.

Accompanying drawing 4 is the structural representation of the 4th embodiment of this utility model, bar type joint (33 among the figure, 36) two ends are an end nail cover of socket (4) and a side nail cover (17) respectively, the same nail piece of end nail cover (2) side nail cover (18) again respectively with prevent that revolving pedicle screw is connected.

Accompanying drawing 5 is the contour structures sketch map of this utility model mandrel rod, and the mid portion of mandrel rod is a kind of to be hexagon (31), and the centre of another kind of mandrel rod is the circle rectangle, and its center is circle square hole (23).Two ends are positive and negative screwed plug, are shaped on yardstick sign (30,32) on the groove plane (37) of its thread segment.

Accompanying drawing 6 is the contour structures sketch map in this utility model bar type joint and shell type joint, the joint arm in shell type joint (10) is a blind pipe shape nipple, the joint arm joint arm (33) in bar type joint is a cylinder, both ball and socket joints are circle (34,11), the center is a circular hole, its articular surface is dentate groove (39,41) and two one high and one low stairstepping semicircles (38,40).

Accompanying drawing 7 is the anti-contour structures sketch map that revolves pedicle screw of this utility model, anti-ly revolves pedicle screw to follow closely admittedly that the clamping platform (3) of end goes up in the initial part both sides of its bolt be the anti-projection (42,43) of revolving of two semicircles, square, slope shape.

Accompanying drawing 8 is the contour structures sketch map of this utility model end nail cover and side nail cover, the solid nail piece (28 of end nail cover, 19) be positioned at the head end that connects cover, the solid nail piece (18 of side nail cover, 27) be positioned at and connect the distolateral of cover, admittedly follow closely piece and the longitudinal axis that connects cover forward leaning angle (47,48) from 0 ° ~ 30 ° is arranged, admittedly the solid nail hole of following closely on the piece is circular (45), circle rectangle (44,50,51), the cover that connects of end nail cover is the tubular blind pipe, and the cover profile that connects of side nail cover is circle, hexagon, its endoporus has the branch of round hole and screw, and be connected with the mandrel rod two ends and be complementary, connecing the circular hole (46,52) that puts is fixed screw holes.

The enforcement of Rod set joint straightener, it is a big technical breakthrough of orthopedic tool, it will be the clinical treatment scoliosis, fracture, dislocation provides a kind of novel internal fixation operation method, especially to the scoliotic rectification of growth property, postoperative does not influence the growth promoter of spinal column, the great advantage of this inner fixing device is axially to stretch thereupon growing, this utility model also has simple in structure, easy to manufacture, advantage such as easy for installation, key is that its mandrel rod has the yardstick sign, thereby can make patient's yardstick directly perceived accurately hold adjustment axially to strut dynamics, shorten operating time, safety, finish surgical tasks fast.

Claims

1, a kind of Rod set joint straightener, be to revolve pedicle screw, end nail cover, side nail cover, mandrel rod, shell type joint, bar type joint and cross-connecting apparatus is supporting connects to form by anti-, it is characterized in that: mandrel rod of the supporting successively respectively connection in two ends, a shell type joint, end nail cover, side nail cover and the anti-pedicle screw that revolves are formed the protruding appliance of meropodium side; The two ends in a bar type joint supporting respectively link nail cover, side nail cover and the anti-pedicle screw that revolves are formed the protruding appliance of pipe nipple side; The two ends of a mandrel rod supporting respectively link nail cover or side nail cover and the anti-pedicle screw that revolves are formed the protruding appliance in back.

2, according to the described Rod set joint straightener of claim 1, it is characterized in that: on the anti-clamping plane (3) of revolving the solid nail end of pedicle screw (1), the anti-projection (31,33) of revolving of two semicircles, square or slope shape is arranged in the initial part both sides of bolt promptly.

3, according to the described Rod set joint straightener of claim 1, it is characterized in that: the centre of mandrel rod (21) is a hexagon, two ends are positive and negative screwed plug (26), on the groove plane (41) of its thread segment, be shaped on yardstick sign (26), the centre of another kind of mandrel rod is circle rectangle (18), and its center is circle square hole (19).

4, according to the described Rod set joint straightener of claim 1, it is characterized in that: the solid nail piece (2) of end nail cover (4) is positioned at the head end that connects cover, the solid nail piece (13) of side nail cover (14) is positioned at and connects the distolateral of cover, admittedly following closely piece has from the forward leaning angle of 0 ° ~ 30 ° of scopes with the longitudinal axis that connects cover, connect on the tube wall of cover a raised platforms (21 is arranged, 25), the platform center is a screw hole (46,52), admittedly the solid nail hole of following closely on the piece is circular (34) or circle rectangle (40), the cover that connects of end nail cover is tubular blind pipe shape, the cover that connects of side nail cover is circle or hexagon, its endoporus has the branch of circular hole and screwed hole, and is connected with mandrel rod and is complementary.

5, according to the described Rod set joint straightener of claim 1, it is characterized in that: the joint arm (8 in shell type joint, 11), be tubular blind pipe shape, the joint arm (22 in bar type joint, 25) be cylinder, ball and socket joint is circular, and the center is the circular knothole that closes, and its articular surface is zigzag (28), channel shaped, stairstepping semicircle (27), two coupling articular surfaces are involutory together, and pedicle screw connects and composes strong buttknuckle by closing knothole.

6,, it is characterized in that used material is nontoxic stainless steel material and titanium material according to the described bar-interlink orthopedic system of claim 1.