CN1161079C

CN1161079C - Externally fixing reductor for disclocated vertebral column

Info

Publication number: CN1161079C
Application number: CNB011271205A
Authority: CN
Inventors: 金正帅; 范卫民
Original assignee: Jiangsu Province Hospital
Current assignee: Jiangsu Province Hospital
Priority date: 2001-08-20
Filing date: 2001-08-20
Publication date: 2004-08-11
Anticipated expiration: 2021-08-20
Also published as: CN1348743A

Abstract

The present invention relates to an external fixation repositor used for treating the spondylolishesis of a human body, which is composed of an upper supporting mechanism, a lower supporting mechanism and a suspending mechanism between the upper supporting mechanism and the lower supporting mechanism; the upper supporting mechanismand the lower supporting mechanism has the same structure, which are respectively composed of a supporting plate and a pair of adjustable supporting column nails; the upper supporting plate of the upper supporting mechanism and the lower supporting plate of the lower supporting mechanism are connected together through three longitudinal long screw rods which are arranged in a triangle mode; the suspending mechanism is composed of a horizontal bar, a lifting and pulling bar and drawing nails, wherein the horizontal bar is connected with the lifting and pulling bar through a lifting and pulling rod; the lifting and pulling bar is provided with a pair of adjustable drawing nails; both ends of the horizontal bar are adjustably connected with the middle of the two long screw rods corresponding to both ends of the horizontal bar through a side frame seat; the middle of the horizontal bar is adjustably connected with a rear long screw rod through a hanging seat backward. The present invention has the advantages of small wound in treatment, high treatment success ratio, convenience for assembling and disassembling instruments, firmness, high stability, strong reduction force for sliding vertebra and obvious curative effect.

Description

Externally fixing reductor for disclocated vertebral column

Technical field

The present invention relates to a kind of orthopaedics therapy apparatus, the external fixation positor that the particularly a kind of human spine's of treatment slippage is used.

Background technology

At present, at the orthopaedics therapy spondylolishesis, all adopt inside fixing reset unit, it is made up of nail rod or nail-plate class formation, belongs to the short segment apparatus.Wound is bigger during the treatment of this internal fixation treatment device, the inconvenience of apparatus installing/dismounting, more stable and stronger is relatively poor, reset force a little less than.During its treatment is disposable resetting, and is difficult for sometimes successfully, also may cause nerve injury.Because inside fixing reset unit belongs to the short segment apparatus, its stressed mechanism is hung as cantilever, makes the stressed very big of its next screw, is prone to screw loosening, bending, fracture, even extracts, and does not reach the purpose of treatment again.In addition because human body the 4th, 5 pedicle of lumbar vertebral arch camber angles are bigger, when then treating with inside fixing reset unit, because of apparatus itself or operating field difficult exposure, often can not adapt to so big camber angle, make the screw camber angle of inside fixing reset unit reduce, vertebral body inner nail track length shortens, and finally causes the screw pull-out capacity to reduce, and influences therapeutic effect.In addition, during inside fixing reset unit treatment human body the 5th lumbar spondylolisthesis, its next nail can only be fixed in rumpbone, and rumpbone is a spongy bone, can not provide screw good set basis.

Summary of the invention

Purpose of the present invention is exactly in order to address the above problem, and wound was little when a kind of treatment was provided, and treated the success rate height, the apparatus easy installation and removal, and more stable and stronger is good, to the strong externally fixing reductor for disclocated vertebral column of slippage vertebra reset force.

Technical solution of the present invention:

A kind of externally fixing reductor for disclocated vertebral column, it is characterized in that it is by last, lower support mechanism and intermediary suspension gear are formed, on, the structure of lower support mechanism is identical, constitute by supporting plate and a pair of scalable pillar nail, on, in the lower support mechanism, vertical long bolt by three rounded projections arranged between the lower carriage plate links together, suspension gear is by horizontal stripe, pulling item and traction nail constitute, horizontal stripe links to each other with pulling item by lifting rod, pulling item is provided with a pair of scalable traction nail, the horizontal stripe two ends are connected with the middle scalable of two long bolts of opposite ends by the bogie side frame seat, are connected with a long bolt scalable at rear by flap seat backward in the middle of the horizontal stripe.

External fixation positor of the present invention belongs to the long segment apparatus, its stressed mechanism is as straddle truck, each pillar screw is stressed evenly, can not occur becoming flexible, phenomenon such as bending, fracture, its Therapeutic Method is to adopt the first phase externally slowly to reset, the second phase preceding road discectomy bone-graft fusion, treatment success rate height, the nerve injury complication is few.Wound was little when the present invention treated, the apparatus easy installation and removal, and more stable and stronger is good, and is strong to slippage vertebra reset force.The first phase of the present invention is served as the positor function when resetting, can serve as the external fixator function again behind the second phase preceding road bone grafting, need not internal fixation.When the present invention treated the 4th, 5 lumbar spondylolisthesis, camber angle was unrestricted substantially during its long handle pedicle nail percutaneous drift bolt, and nail road length is longer, and the screw pull-out capacity is big.It is when treatment the 5th lumbar spondylolisthesis, and its next long handle pedicle of vertebral arch pillar nail optionally is fixed in the other hard matter bone of sacroiliac joint, and good set basis can be provided, and can effectively guarantee therapeutic effect.

Description of drawings

Fig. 1 is a Facad structure sketch map of the present invention.

Fig. 2 is the backsight structural representation of Fig. 1.

Fig. 3 is the plan structure sketch map of Fig. 1.

Fig. 4 is the A-A cross-sectional view of Fig. 2.

Fig. 5 is the B-B cross-sectional view of Fig. 2.

The specific embodiment

As Fig. 1-5, externally fixing reductor for disclocated vertebral column of the present invention is by last, lower support mechanism 1,2 and intermediary suspension gear 3 form, on, lower support mechanism 1,2 structure is identical, constitute by supporting plate 4 and a pair of scalable pillar nail 5, on, lower support mechanism 1, on 2, vertical long bolt 6 by three rounded projections arranged between the lower carriage plate 4 links together, suspension gear 3 is by horizontal stripe 7, pulling item 8 and traction nail 9 constitute, horizontal stripe 7 links to each other with pulling item 8 by lifting rod 10, pulling item 8 is provided with a pair of scalable traction nail 9, horizontal stripe 7 two ends are connected with the middle scalable of two long bolts 6 of opposite ends by bogie side frame seat 11, are connected with long bolt 6 scalable at rear by flap seat 12 backward in the middle of the horizontal stripe 7.

On of the present invention, lower support mechanism 1, in 2, its supporting plate 4 can be the T template, the transverse slat both sides of this T template have double flute 13, all wear in the double flute 13 of both sides and be connected with securing member 14, all right one way or the other adjustable fixing nail 5 just with a corresponding side double flute 13 in securing member 14 connections, described securing member 14 can be by locking bar 15, packing ring 16 and nut 17 constitute, locking bar 15 is the step cylinder, have with the scalable pillar on its inner thick section bar and follow closely the through hole 18 that 5 external diameters match, and through hole 18 edges just in time are positioned at thin segment bar place, locking bar 15 outer end, the thin segment bar of locking bar 15 is a screw rod, it pass with its packing ring that matches 16 after obey again to pass with nut 17 in the frame plate 4 corresponding double flutes 13 and connect, after the through hole 18 of the locking bar 15 of two securing members 14 of scalable pillar nail 5 from supporting plate 4 corresponding side double flutes 13 passes, this scalable pillar is followed closely on the corresponding packing ring 16 that 5 correspondence position outer walls just are close to two securing members 14, tighten the nut 17 of two securing members, 14 locking bars 15, just by two packing rings, 16 locking scalable pillar nails 5.17 of loosen nut can move forward and backward adjusting to scalable pillar nail 5, if two securing members 14 move along the corresponding double flute 13 of corresponding supporting plate 4, the all right one way or the other adjustable fixing of scalable is followed closely the distance between 5 again, if two securing members 14 are along supporting plate 4 corresponding double flute 13 displacement differences, the all right one way or the other adjustable fixing of scalable is followed closely 5 angle of inclination again, to satisfy the needs of different human body spine structure.The transverse slat two ends of the T type supporting plate 4 in the upper and lower supporting mechanism 1,2 and riser rear end all connect by universal ball-and-socket joint 19 and three long bolts 6 corresponding end scalable, make upper and lower supporting mechanism 1, the 2 adjustable upper and lower ends that are connected three long bolts 6.

Above-mentioned universal ball-and-socket joint 19 can be made of multi-directional ball 20 and tightening cover 21, be provided with the screw that matches with long bolt 6 in the multi-directional ball 20, and the outer end integral body of multi-directional ball 20 is connected with the square toes 22 with identical inner bolt hole, their inner bolt hole is connected together, correspondingly, the inner surface of supporting plate 4 corresponding end surfaces and tightening cover 21 is equipped with the ball-and-socket face that matches with multi-directional ball 20, the inner bolt hole rotation set of multi-directional ball 20 is behind an end of corresponding long bolt 6, its ball surface is just in time lived by the ball-and-socket bread of supporting plate 4 corresponding end ball-and-socket faces and corresponding tightening cover 21, and tightening cover 21 is connected by trip bolt 23 and supporting plate 4 corresponding end, constitutes universal ball-and-socket joint 19.

In the suspension gear 3 of the present invention, its horizontal stripe 7 has the elongated slot 24 that runs through fore-and-aft direction, the bogie side frame seat 11 at horizontal stripe 7 two ends is made of the pedestal 26 that universal ball-and-socket joint 25 (its structure is identical with the structure of aforementioned universal ball-and-socket joint 19) is connected with one forward, the universal ball-and-socket joint 25 of both sides stand 11 just is connected with horizontal stripe 7 two ends scalable, the pedestal 26 of both sides stand 11 just is sleeved on the middle part of two ends long bolt 6, and by last, following screw rod nut 27 lockings, horizontal stripe 7 intermediary flap seats 12 can and hang 29 by suspension rod 28 and constitute, suspension rod 28 passes in the middle of the elongated slot 24 of horizontal stripe 7 and by nut 30 tightenings, suspension rod 28 rear ends are with to hang 29 hinged, hang 29 by on it, the through hole that following direction connects is sleeved in the middle of the long bolt 6 at rear, and also by 27 lockings of screw rod nut.Have two elongated slots 31 of upper and lower perforation on the pulling item 8 of suspension gear 3, both sides in this pair elongated slot 31 are equipped with two pairs of securing members 32, the structure of the securing member 14 in their structure and the upper and lower supporting mechanism 1,2 is identical, wherein a pair of securing member 32 connects with a corresponding lifting rod 10 front end scalable, lifting rod 10 rear ends pass horizontal stripe 7 elongated slots 24 and by lifting rod nut 33 location, another connects with corresponding traction nail 9 scalable securing member 32 in two elongated slots 31 of pulling item 8.

When the present invention works, earlier the nail of the pair of posts in the upper support mechanism 15 is fixed in patient's the breast 12 or waist 1 pedicle of vertebral arch, pair of posts in the lower support mechanism 2 nail 5 is fixed in the patient's waist 5 or the auricular plane of sacral bone outside, and the securing member 14 by them is locked then.A pair of traction nail 9 in the suspension gear 3 is fixed in the pedicle of vertebral arch of patient's waist 4 or waist 5 slippage vertebras, also the securing member 32 by them is fixed again.At this moment, by rotating the universal ball-and-socket joint 19 that upper and lower supporting plate 4 is connected with three long bolts 6 in the upper and lower supporting mechanism 1,2, it is the distance between the adjustable big upper and lower supporting plate 4, make on patient's the slippage vertebra and carry, again by screwing lifting rod nut 33, just make pulling item 8 drive a pair of traction nail 9 and move backward, the patient is moved behind the vertebral body of slippage forward reset, reach the purpose of treatment spondylolysis.

Claims

1, a kind of externally fixing reductor for disclocated vertebral column, it is characterized in that it is by last, lower support mechanism and intermediary suspension gear are formed, on, the structure of lower support mechanism is identical, constitute by supporting plate and a pair of scalable pillar nail, on, in the lower support mechanism, vertical long bolt by three rounded projections arranged between the lower carriage plate links together, suspension gear is by horizontal stripe, pulling item and traction nail constitute, horizontal stripe links to each other with pulling item by lifting rod, pulling item is provided with a pair of scalable traction nail, the horizontal stripe two ends are connected with the middle scalable of two long bolts of opposite ends by the bogie side frame seat, are connected with a long bolt scalable at rear by flap seat backward in the middle of the horizontal stripe.

2, by the described externally fixing reductor for disclocated vertebral column of claim 1, it is characterized in that on described, in the lower support mechanism, its supporting plate is the T template, the transverse slat both sides of this T template have double flute, all wear in the double flute of both sides and be connected with securing member, all right one way or the other adjustable fixing nail just with a corresponding side double flute in the securing member connection, described securing member is by locking bar, packing ring and nut constitute, locking bar is the step cylinder, have the through hole that matches with scalable pillar nail external diameter on its inner thick section bar, and the through hole edge just in time is positioned at thin segment bar place, locking bar outer end, the thin segment bar of locking bar is a screw rod, passes with nut behind the packing ring that it passes with it matches to connect from the corresponding double flute of supporting plate again.

3,, it is characterized in that the transverse slat two ends of the T type supporting plate in the upper and lower supporting mechanism and riser rear end all connect with three corresponding end scalable of long bolt by universal ball-and-socket joint by the described externally fixing reductor for disclocated vertebral column of claim 2.

4, by the described externally fixing reductor for disclocated vertebral column of claim 3, it is characterized in that described universal ball-and-socket joint is made of multi-directional ball and tightening cover, be provided with the screw that matches with long bolt in the multi-directional ball, and the outer end integral body of multi-directional ball is connected with the square toes with identical inner bolt hole, their inner bolt hole is connected together, correspondingly, the inner surface of supporting plate corresponding end surface and tightening cover is equipped with the ball-and-socket face that matches with multi-directional ball, the inner bolt hole rotation set of multi-directional ball is behind an end of corresponding long bolt, its ball surface is just in time lived by the ball-and-socket bread of supporting plate corresponding end ball-and-socket face and corresponding tightening cover, and tightening cover is connected by trip bolt and supporting plate corresponding end, constitutes universal ball-and-socket joint.

5, by the described externally fixing reductor for disclocated vertebral column of claim 1, it is characterized in that in the described suspension gear, its horizontal stripe has the elongated slot that runs through fore-and-aft direction, the bogie side frame seat at horizontal stripe two ends is made of the pedestal that universal ball-and-socket joint is connected with one forward, the universal ball-and-socket joint of both sides stand just is connected with horizontal stripe two ends scalable, the pedestal of both sides stand just is sleeved on the middle part of two ends long bolt, and by last, following screw rod nut locking, the intermediary flap seat of horizontal stripe by suspension rod and hang the head constitute, suspension rod passes in the middle of the elongated slot of horizontal stripe and by the nut tightening, the suspension rod rear end with hang hinged, hang head by on it, the through hole that following direction connects is sleeved in the middle of the long bolt at rear, and is also locked by the screw rod nut; Have two elongated slots of upper and lower perforation on the pulling item of suspension gear, both sides in this pair elongated slot are equipped with two pairs of securing members, the structure of the securing member in their structure and the upper and lower supporting mechanism is identical, wherein a pair of securing member connects with a corresponding lifting rod front end scalable, the lifting rod rear end passes the horizontal stripe elongated slot and by lifting rod nut location, another connects with a corresponding traction nail scalable securing member in two elongated slots of pulling item.