CN1372869A - Equipment for fusing steel sheet before neck - Google Patents

Abstract

Translated fromChinese

本发明涉及医疗器械领域,特别是一种颈前路钢板融合器。它由上、下固定板和上、下钛网组成。上固定板与上钛网连成方管状,下固定板与下钛网连成方管状,后者可插入前者的方孔内。钛网的正、后、底端面有网孔,上固定板有腰形槽并配有固定螺栓和垫圈,下固定板有螺纹孔和腰形槽。在上、下固定板上各开有斜孔,螺钉经斜孔将本器固定于上下椎体。本发明优点:结构牢靠、手术简便和成本低廉,适用于椎体切除后的多节段融合固定手术。

The invention relates to the field of medical devices, in particular to an anterior cervical plate fusion device. It consists of upper and lower fixed plates and upper and lower titanium mesh. The upper fixing plate and the upper titanium net are connected to form a square tube, the lower fixing plate and the lower titanium net are connected to form a square tube, and the latter can be inserted into the square hole of the former. The front, rear and bottom end surfaces of the titanium mesh have mesh holes, the upper fixing plate has waist-shaped grooves and is equipped with fixing bolts and washers, and the lower fixing plate has threaded holes and waist-shaped grooves. There are oblique holes on the upper and lower fixing plates respectively, through which screws pass through the oblique holes to fix the device to the upper and lower vertebral bodies. The present invention has the advantages of firm structure, simple operation and low cost, and is suitable for multi-segment fusion and fixation after vertebral body resection.

Description

A kind of equipment for fusing steel sheet before neck

Technical field:

The present invention relates to medical instruments field, particularly a kind of equipment for fusing steel sheet before neck.

Background technology:

Behind the anterior cervical decompression there be bone-graft fusion internal fixation mode commonly used at present: 1, fusion device is implanted fusion, generally is only applicable to go merely intervertebral space decompression back bone-graft fusion; 2, plant bone mass adds the steel plate internal fixation, can both be applicable to that intervertebral space decompression back was fixing, also is applicable to the post-decompression internal fixation of vertebral resection, and its deficiency is to get the ilium bone grafting for need, and patient need drive a cutter in addition; 3, the titanium net adds throat road steel plate internal fixation, promptly adopts the fixing hypocentrum of going up of titanium alloy sheet, and supporting and to keep the height of intervertebral space, and the titanium net that will fill broken bone places between the hypocentrum, and the interior broken bone of titanium net can be merged mutually with vertebral body bone photo on every side.This technology is because broken bone is taken from the discarded bone that takes off when performing the operation, so can avoid ilium to get bone, but also there is following shortcoming: 1, anatomic form characteristics according to cervical vertebral body, the vertebral body lower edge has an inclination angle, thereby the contact surface of titanium net and top terminal plate of vertebral body should be the inclined-plane, promptly embedding the titanium net of going up relief groove between hypocentrum should be greater than the lateral surface near steel plate at the height near the canalis spinalis medial surface, but whole like this insertion is difficult to, thereby often the end face of titanium net is trimmed in actual applications and does not have the plane of inclined-plane, make the gap that is difficult to avoid leaving over a shortage spongy bone between titanium net and the terminal plate of vertebral body, influence bone and merge, also become the weak spot of conduction stress simultaneously; 2, titanium net shearing force is excessive easily is embedded in the vertebral body, highly loses thereby make between vertebral body; 3, steel plate and titanium net are two kinds of fixation devices, use inconvenience.

Summary of the invention:

The present invention is that the structure to above-mentioned the third inner fixer makes improvements, and makes fusion device and relief groove size coupling, to increase fixed degree, need not prune in operation.

The present invention includes: steel plate and titanium net, it is characterized in that: steel plate is by last, bottom plate is formed, the titanium net is by last, following titanium net is formed, the upper end of upper mounted plate and last titanium net fuses and is square tube type, the upper end of bottom plate and following titanium net fuses and is square tube type, bottom plate can insert in the square hole that is made of upper mounted plate and last titanium net with following titanium net, on, the positive end face of following titanium net, all have mesh on rear end face and the bottom face, on the upper surface of upper mounted plate, have kidney slot, have screwed hole and kidney slot in the upper surface of bottom plate, in the kidney slot of upper mounted plate, be furnished with set bolt and packing ring, set bolt is fastened in the screwed hole of bottom plate, make upper mounted plate, last titanium net and bottom plate, following titanium net fuses, on the degree of tightness set bolt scalable, the height that following titanium net struts, on upper mounted plate and bottom plate, respectively have two inclined holes, will go up to admit hold-down screw, bottom plate is fixed in hypocentrum, and the ultimate contact surface of last titanium net and top vertebral body is skewed.

For increasing mutual engagement force between the upper and lower fixing plate, on the contact surface between upper mounted plate and the bottom plate, have sawtooth.

For in operation, better holding the screw of dilator, on two top end faces of upper and lower fixing plate, have semicircle orifice.

For preventing to be fixed on the loosening of screw in the hypocentrum, respectively set up a lock-screw on two inclined hole limits of upper mounted plate and bottom plate, the cylindrical of lock-screw and the cylindrical of screw are tangent.

The present invention is owing to adopt said structure, on the one hand fixing head and titanium net are fused, increased the strong degree of fusion device, on the other hand whole fusion device is divided into two parts up and down, and adopts the structure of intussusception to be integrated, make fusion device make corresponding inclined plane shape by the oblique angle of soleplate under the body of cervical vertebra, when operation is implanted, its fit is compressed, strut again after waiting to insert the Cervical vertebrae pressure-reducing groove, and be fixed on the hypocentrum, insert the deficiency that difficulty causes because of integral body thereby solved original fusion device.In addition, the present invention also has advantage simple in structure, easy to use and with low cost.

The specific embodiment:

Provide embodiments of the invention and accompanying drawing below, and be described further:

Fig. 1, be main cut-away view of the present invention;

Fig. 2, for the diagrammatic sketch of overlooking of the present invention;

Fig. 3, left diagrammatic sketch of the present invention;

Fig. 4, the partial cutaway diagrammatic sketch of looking up of the present invention.

By shown in Figure 1, steel plate is made up of upper andlower fixing plate 1,2, and the titanium net is made up of upper and lower titanium net 3,4.Upper mountedplate 1 fuses with the upper end of last titanium net 3, andbottom plate 2 fuses with the upper end of following titanium net 4.All havemesh 5 on the positive end face of upper and lower titanium net 3,4, rear end face and the bottom face (see figure 4).On upper mountedplate 1, havekidney slot 6, onbottom plate 2, have screwed hole 7 andkidney slot 8, inkidney slot 6, be furnished with setbolt 9 andpacking ring 10, setbolt 9 is fastened in the screwed hole 7, upper mountedplate 1,last titanium net 3 are fused with bottom plate, following titanium net, unclamp the height that the upper andlower titanium net 3,4 of bolt scalable struts.Respectively have two inclined holes on upper mountedplate 1 andbottom plate 2, hold-downscrew 11 is fixed in hypocentrum with upper andlower fixing plate 1,2 to admit fixedly, andlast titanium net 3 is skewed with thecontact surface 12 of top terminal plate of vertebral body.On the contact surface between upper mountedplate 1 and thebottom plate 2, havesawtooth 16, to increase mutual engagement force between upper mountedplate 1 and thebottom plate 2.

By shown in Figure 2, on the upper surface of upper mountedplate 1, havekidney slot 6, have screwed hole 7 (see figure 1)s andkidney slot 8 in the upper surface of bottom plate 2.Be furnished withset bolt 9 and packing ring 10 (see figure 1)s in thekidney slot 6 of upper mountedplate 1, respectively have two inclined holes on upper mountedplate 1 andbottom plate 2, fixedly hold-downscrew 11 is fixed in hypocentrum by inclined hole.For in operation, better holding the supporting rod of dilator, on two top end faces of upper andlower fixing plate 1,2, havesemicircle orifice 14,15.For preventing to be fixed in the hypocentrum the loosening of fixing hold-downscrew 11, between two inclined holes of upper mountedplate 1 andbottom plate 2, respectively set up alocking screw 13 nails, the cylindrical of the lock-screw 13 and fixedly cylindrical of hold-down screw 11 is tangent.

By shown in Figure 3, the upper end of upper mountedplate 1 and last titanium net 3 fuses and is square tube type, and the upper end of bottom plate and following titanium net 4 fuses and is square tube type, and bottom plate can insert in the square hole that is made of upper mountedplate 1 andlast titanium net 3 with followingtitanium net 4.

Optimal parameter of the present invention is as follows:

The length of upper mountedplate 1 is 16--20mm, and width is 16--18mm, and thickness is 4mm; The length ofbottom plate 2 is 14--16mm, and width is 14--16mm, and thickness is 4mm; The diameter of hold-downscrew 11 is 4mm, outside and inside each 10 degree in angle of inclination; The diameter of lock-screw 13 is 4mm; The length ofkidney slot 6 is 10-14mm, and width is 6mm; The length ofkidney slot 8 is 6--10mmm, and width is 4mm; The length oflast titanium net 3 is 12--16mm, and width is 12--14mm, highly is 12--15mm, and wall thickness is 2mm,contact surface 12inclinations 8 degree, andperisporium mesh 5 numbers are 12--18; The length of followingtitanium net 4 is 10--12mm, and width is 9--11mm, highly is 10--12mm, and wall thickness is 2mm, andperisporium mesh 5 numbers are 12.

The present invention in use, operating procedure excision cervical vertebral body is implemented decompression at first routinely, and selects the steel plate fusion device of suitable types according to the vertebral body pressure relief ranges, the vertebral body of excision is cut into broken bone piece is packed in thekidney slot 6,8.Under the situation of not removing dilator, this fusion device is embedded in the relief groove, again with this device up and down two ones retract, the height that struts and relief groove are complementary after, tighten setbolt 9, be screwed into hold-down screw 11 one by one then, lock-screw 13 gets final product.The bone-graft fusion fixing operation became simple and easy to do after the present invention can make anterior cervical decompression, adapted to the physiological status of vertebral body, improved the operation quality, was applicable to that the multi-segmental converged fixed behind the vertebral resection is performed the operation.

Claims (3)

Translated fromChinese

1、一种颈前路钢板融合器，它包括：钢板和钛网，其特征在于：钢板由上、下固定板1、2组成，钛网由上、下钛网3、4组成，上固定板1与上钛网3的上端连成一体呈方管状，下固定板2与下钛网4的上端连成一体呈方管状，下固定板2与下钛网4可插入由上固定板1与上钛网3构成的方孔内，上、下钛网3、4的正端面、后端面及底端面上均开有网孔5，在上固定板1的上端面上开有腰形槽6，在下固定板2的上端面开有螺纹孔7和腰形槽8，在上固定板1的腰形槽6中配有固定螺栓9和垫圈10，固定螺栓9紧固在下固定板2的螺纹孔7内，在上固定板1和下固定板2上各开有两个斜孔，固定螺钉11通过斜孔固定于上下椎体，上钛网3与上方椎体终板的接触面12呈倾斜状。1, a kind of anterior cervical fusion device, it comprises: steel plate and titanium mesh, it is characterized in that: steel plate is made up of upper and lower fixing plate 1,2, and titanium mesh is made up of upper and lower titanium mesh 3,4, and upper fixing The upper end of the plate 1 and the upper titanium mesh 3 are connected to form a square tube, and the upper end of the lower fixing plate 2 and the lower titanium mesh 4 are connected to form a square tube. The lower fixing plate 2 and the lower titanium mesh 4 can be inserted by the upper fixing plate 1 In the square hole formed with the upper titanium mesh 3, there are mesh holes 5 on the front, rear and bottom surfaces of the upper and lower titanium meshes 3 and 4, and waist-shaped grooves are opened on the upper surface of the upper fixing plate 1. 6. There are threaded holes 7 and waist-shaped grooves 8 on the upper end surface of the lower fixing plate 2. Fixing bolts 9 and washers 10 are arranged in the waist-shaped groove 6 of the upper fixing plate 1. The fixing bolts 9 are fastened to the bottom of the lower fixing plate 2. In the threaded hole 7, two oblique holes are respectively opened on the upper fixing plate 1 and the lower fixing plate 2, and the fixing screws 11 are fixed on the upper and lower vertebral bodies through the oblique holes, and the contact surface 12 between the upper titanium mesh 3 and the upper vertebral body endplate It is inclined.2、据权利要求1所述的一种颈前路钢板融合器，其特征在于：在上固定板1与下固定板2之间的接触面上开有锯齿16，在上、下固定板1、2的两顶端面上开有半圆孔14、15，在上固定板1和下固定板2的两个斜孔之间各有一个锁紧螺钉13，锁紧螺钉13的外圆与固定螺钉11的外圆相切。2. An anterior cervical fusion cage according to claim 1, characterized in that: there are serrations 16 on the contact surface between the upper fixing plate 1 and the lower fixing plate 2, and the upper and lower fixing plates 1 , Two top ends of 2 have semicircular holes 14,15, a locking screw 13 is respectively arranged between the two oblique holes of the upper fixing plate 1 and the lower fixing plate 2, and the outer circle of the locking screw 13 is in line with the fixing screw 11 is tangent to the outer circle.3、据权利要求1、2所述的一种颈前路钢板融合器，其特征在于：上固定板1的长度为16--20mm，宽度为16--18mm，厚度为4mm；下固定板2的长度为14--16mm，宽度为14--16mm，厚度为4mm；固定螺钉11的直径为4mm，倾斜角度向外和向内各10度；锁紧螺钉13的直径为4mm；腰形槽6的长度为10--14mm，宽度为6mm；腰形槽8的长度为6--10mmm，宽度为4mm；上钛网3的长度为12--16mm，宽度为12--14mm，高度为12--15mm，壁厚为2mm，接触面12倾斜8度，周壁网孔5数为12--18个；下钛网4的长度为10--12mm，宽度为9--11mm，高度为10--12mm，壁厚为2mm，周壁网孔5数为12个。3. An anterior cervical fusion cage according to claims 1 and 2, characterized in that: the upper fixed plate 1 has a length of 16--20 mm, a width of 16--18 mm, and a thickness of 4 mm; the lower fixed plate 1 2 has a length of 14--16mm, a width of 14--16mm, and a thickness of 4mm; the diameter of the fixing screw 11 is 4mm, and the inclination angle is 10 degrees outward and inward; the diameter of the locking screw 13 is 4mm; The length of the groove 6 is 10--14mm, and the width is 6mm; the length of the waist-shaped groove 8 is 6--10mm, and the width is 4mm; 12--15mm, the wall thickness is 2mm, the contact surface 12 is inclined at 8 degrees, and the number of 5 surrounding wall meshes is 12--18; the length of the lower titanium mesh 4 is 10--12mm, the width is 9--11mm, and the height It is 10--12mm, the wall thickness is 2mm, and the number of 5 meshes on the surrounding wall is 12.

Images