CN206424181U - The lumbar intervertebral fusion fixing device that automatic screw is fixed - Google Patents

Abstract

Fixing device is merged the utility model discloses the lumbar intervertebral that a kind of automatic screw is fixed, including：The fixture of the body of one PEEK materials and a titanium alloy material, the fixture is connected with the tail end of body, and the development part of a titanium alloy material is located on body, and at 1.0~1.5mm of front end away from body, to be used as structure tag development part in imaging process.The lumbar intervertebral fusion fixing device that automatic screw of the present utility model is fixed is inserted available for minimally invasive passage, including side approach Lumbar Fusion ligamentopexis (DLIF) and diagonally forward approach Lumbar Fusion ligamentopexis (OLIF), the lumbar intervertebral fusion fixing device that the automatic screw is fixed can connect body and fixture is inserted together, prevent unnecessary displacement, fixation, operating procedure can also be simplified by inserting together, shorten operating time, operating difficulty is reduced, reduces in the art of patient and damages.

Description

The lumbar intervertebral fusion fixing device that automatic screw is fixed

Technical field

The utility model belongs to technical field of medical instruments, and in particular to the lumbar intervertebral fusion that a kind of automatic screw is fixed Fixing device.

Background technology

Fusion is widely used in Lumbar Intervertebral Disc Degeneration disease, such as protrasion of the lumbar intervertebral disci, Lumbar Vertebral Canal between lumbar vertebra Stenosis, lumber spondylolisthesis and Lumbar Degenerative lateral bending etc..More traditional art formula includes Posterior lumbar interbody fusion (TLIF And PLIF) and anterior lumbar interbody fusion (ALIF).Although posterior fusion determined curative effect, fusion rate are higher, it is still Come with some shortcomings, muscle denervation and chronic back pain as caused by peeling off paraspinal muscle, around intra-and extraspinal and nerve root Tissue adhesion and cicatrization, and the smaller cause nucleus pulposus residual of discectomy scope, protrusion of lumber intervertebral disc recurrence etc..And it is preceding Merge also that risk is high because of the interference of belly various organs between the lumbar vertebra of road.Recently as the development of Minimally Invasive Surgery technology, warp The Lumbar Fusion ligamentopexis carried out under minimally invasive passage is becoming increasingly popular, including side approach Lumbar Fusion ligamentopexis (DLIF) With diagonally forward approach Lumbar Fusion ligamentopexis (OLIF).The serious unstability patient of part lumbar vertebrae, only inserts fusion device, its anti-rotation Mechanical property is poor, the displacement that can occur fusion device, it is often necessary to coordinate the nail rod or nail-plate of dypass to use.But using nail-plate or Person's nail rod auxiliary is fixed, and positioning difficulty is big, cumbersome, and lumbar nerve often crosses over implant surface, lumbar nerve can be stimulated to cause god Through infringement, and use in conjunction nail rod or pegboard systems patient generation fusion device displacement clinically still can be observed.

Utility model content

The purpose of this utility model is to provide the lumbar intervertebral fusion fixing device that a kind of automatic screw is fixed.

The technical solution of the utility model is as follows：

The lumbar intervertebral fusion fixing device that a kind of automatic screw is fixed, including：

One body, PEEK materials, length is consistent with the length on the coronal inclined-plane of human body lumbar vertebra, and width is human body lumbar vertebrae The 70~80% of the sagittal plane width of centrum；The adhered shape human dissection mechanism of its side wall, including side wall leading portion, side wall Stage casing and side wall back segment, the distance between the top edge and lower edge of the side wall leading portion are from back to front along the length direction of body Axis be gradually reduced, the top edge and lower edge in side wall stage casing are the low arc in middle high both sides, the top of side wall back segment The angle of edge and lower edge and the coronal horizontal plane of people's lumbar vertebrae is 10~30 degree；The upper top surface and bottom surface of body are equipped with the past The positioning tooth of continuously arranged triangle backward, the tooth depth of the positioning tooth is 0.8~1.0mm, the positioning tooth of above-mentioned triangle Anterior angle is 30 degree, and relief angle is 60 degree, and drift angle is 90 degree；Body have up/down perforation one before after aggregate filled cavity and one aggregate fill out Chamber is filled, the preceding aggregate filled cavity and rear aggregate filled cavity are separated by by a median wall, the two side of preceding aggregate filled cavity, which has, to be passed through Two logical planting in advance bone windows, the two side of rear aggregate filled cavity have insertion two after bone grafting window；The development part of one titanium alloy material On body, and at 1.0~1.5mm of front end away from body, to be used as structure tag in imaging process；

One fixture, titanium alloy material, it is inside downwards with a upper tapping screw thread through hole being upwardly and inwardly inclined and one Inclined lower tapping screw thread through hole, on this angle of tapping screw thread through hole and lower tapping screw thread through hole and horizontal plane be 30 ± 10 °, the angle with sagittal plane is 10 ± 2.5 °；

Above-mentioned fixing piece is connected with the tail end of body.

In a preferred embodiment of the present utility model, two sides at the upper top surface of the body and the rear portion of bottom surface The distance between edge is gradually reduced along the axis of the length direction of body from front to back.

In a preferred embodiment of the present utility model, the length of the body is 30~45mm, width is 10~ 15mm.It is further preferred that the Breadth Maximum in the side wall stage casing is 10 to 15mm, and minimum widith is less than 10mm and is more than etc. In 7mm.

In a preferred embodiment of the present utility model, the length of the planting in advance bone window is 4~5mm, and width is 3 ~4mm.The length of the rear bone grafting window is 4~5mm, and width is 3~4mm.

In a preferred embodiment of the present utility model, on the upper tapping screw thread through hole and lower tapping screw thread through hole It is equipped with an elastic spacing one.

In a preferred embodiment of the present utility model, the fixture is provided with the upper tapping screw thread through hole of an adaptation Upper limit catch, in embedded upper centrum.

In a preferred embodiment of the present utility model, the fixture is provided with the lower tapping screw thread through hole of an adaptation Lower limit catch, in embedded hypocentrum.

In a preferred embodiment of the present utility model, card of the middle part provided with adaptation instrument of the fixture Groove.

The beneficial effects of the utility model：

1st, the lumbar intervertebral fusion fixing device that automatic screw of the present utility model is fixed is inserted available for minimally invasive passage, should The lumbar intervertebral fusion fixing device that automatic screw is fixed can connect body and fixture is inserted together, and it is unnecessary to prevent Displacement, fixation, operating procedure can also be simplified together by inserting, and shorten operating time, reduce operating difficulty, reduce the art of patient Middle damage.

2nd, flexible locating part on tapping screw thread through hole up and down of the present utility model, can be pushed back when inserting screw, And ejected again after screw is completely screwed into, the head end outer rim of screw is may be stuck in, prevents screw from exiting, the secondary hand of patient is reduced The risk of art.

3rd, neck of the middle part of the fixture provided with adaptation instrument, can be combined with aid is inserted, side Just it is built into the utility model in minimally invasive passage.

4th, the upper top surface and bottom surface of body of the present utility model are equipped with determining for continuously arranged triangle from front to back Position tooth, the anterior angle of the positioning tooth of above-mentioned triangle is 30 degree, and relief angle is 60 degree, and drift angle is 90 degree, is so easy to reduce fusion device The resistance inserted, initial stability can be provided again, prevent fusion device from deviating from.

5th, fixture and body of the present utility model are integrally inserted in intervertenral space, then are aided with tapping screw and are fixed, it is to avoid The fixation of nail-plate, nail-stick system is carried out outside centrum, zero incisura can be accomplished, juxta-articular activity is faced in neither influence, also will not Tissue internal organs around damaging.

6th, the utility model can be inserted by dypass or Xie Qian roads under Minimally Invasive Surgery, can be most relative to traditional operation Limits retain Facet joint, spinous process, interspinal ligaments, posterior longitudinal ligament, it is not necessary to peel off low back muscle on a large scale, wherein before tiltedly Road, which is inserted, need not peel off greater psoas muscle, it is not necessary to Electrophysiology monitoring is carried out in art, maintain lumbar vertebrae physiology and mechanics is stable, Patient's post-operative recovery is fast, and spinal stabilization is good.

Brief description of the drawings

Fig. 1 dimensional structure diagrams of the present utility model.

Fig. 2 is side view of the present utility model.

Fig. 3 is top view of the present utility model.

Embodiment

The technical solution of the utility model is further detailed below by way of embodiment combination accompanying drawing and Description.

As shown in figure 1, the lumbar intervertebral fusion fixing device that a kind of automatic screw is fixed, including a PEEK (polyether-ether-ketone) The fixture 2 of the titanium alloy material of body 1 and one of material, the fixture 2 is connected with the tail end of body 1, and development part specifically should Fixture 2 is connected by notch with the tail end of body 1.

As shown in Figure 1 to Figure 3, body 1 have up/down perforation one before aggregate filled cavity 12 after aggregate filled cavity 11 and one, The preceding aggregate filled cavity 11 and rear aggregate filled cavity 12 are separated by by a median wall 13, and the two side of preceding aggregate filled cavity 11 has Two planting in advance bone windows 110 of insertion, the two side of rear aggregate filled cavity 12 have insertion two after bone grafting window 120, planting in advance bone window 110 Shape with rear bone grafting window 120 is class ellipse (middle part lower edges is parallel, and two ends are connected by semicircle), and length is 4~5mm, width is 3~4mm, can provide nutrition and blood supply for the sclerotin in the utility model, is that bone melts Close and good physiological condition is provided；The development part 3 of one titanium alloy material is located on body 1, and the front end 1.0 away from body 1~ 1.5mm place, to be used as structure tag in imaging process；

The length of body 1 is consistent with the length on the coronal inclined-plane of human body lumbar vertebra, and preferably 30~45mm, width is human body The sagittal plane width of lumbar vertebra 70~80% and adapt to the width size that minimally invasive passage can be accommodated as far as possible, preferably 10~ 15mm；

As shown in Fig. 2 the adhered shape human dissection mechanism of the side wall of body 1, including in side wall leading portion 14, side wall Section 15 and side wall back segment 16, the distance between the top edge and lower edge of the side wall leading portion 14 are from back to front along the length of body 1 The axis in degree direction is gradually reduced, and the top edge and lower edge in side wall stage casing 15 are that the low arc in middle high both sides is (maximum wide Spend for 10 to 15mm, minimum widith is less than 10mm and more than or equal to 7mm), top edge and the lower edge and people's waist of side wall back segment 16 The angle of the coronal horizontal plane of vertebra is 10~30 degree, and main body can be facilitated to be implanted into joint of lumbar vertebra gap, and resistance is small, it is easy to be implanted into；

As shown in Figure 1 to Figure 3, the upper top surface and bottom surface of body 1 are equipped with continuously arranged triangle from front to back Positioning tooth 17, the tooth depth of the positioning tooth 17 is 0.8~1.0mm, and the anterior angle of the positioning tooth 17 of above-mentioned triangle is 30 degree, and relief angle is 60 degree, drift angle is 90 degree；And the upper top surface of body 1 and the distance between two edges at rear portion of bottom surface are from front to back along body The axis of 1 length direction is gradually reduced, and can also reduce the resistance of implantation, can also avoid damage to the histoorgan of surrounding；

As shown in figure 1, fixture 2 has a upper tapping screw thread through hole 21 and one being upwardly and inwardly inclined inwardly downward Lower tapping screw thread through hole 22, angle of tapping screw thread through hole 21 and lower tapping screw thread through hole 22 and horizontal plane is 30 on this ± 10 °, the angle with sagittal plane is 10 ± 2.5 °, meanwhile, fixture 2 is provided with the upper tapping screw thread through hole 21 of an adaptation The lower limit catch 24 of the lower tapping screw thread through hole 22 of the adaptation of upper limit catch 23 and one, during the utility model is implanted into, The upper limit catch 23 and lower limit catch 24 can be embedded in upper hypocentrum, on the one hand prevent the utility model is too deep to squeeze into vertebra Body, on the one hand can increase anti-rotation stability of the present utility model；The upper tapping screw thread through hole 21 and lower tapping screw thread lead to An elastic spacing one 25 is equipped with hole 22, the elastic spacing one 25 is extruded resigning when inserting tapping screw, and in screw Resetted after being completely screwed into, may be stuck in the head end outer rim of tapping screw, prevent tapping screw from exiting, it is preferred that tapping screw phase For the adjustable angle of titanium alloy fixed plate；In addition the middle part of the fixture 2 is also preferably equipped with being adapted to the neck of instrument 26, it can be combined with corresponding aid, facilitate the utility model to be inserted through minimally invasive passage.Preferred straight of above-mentioned tapping screw Footpath 4mm, 30~40mm of length, its head of a nail are in arc surface.

It is described above, preferred embodiment only of the present utility model, therefore the utility model implementation can not be limited according to this Scope, i.e., the equivalent changes and modifications made according to the utility model the scope of the claims and description all should still belong to this practicality It is new cover in the range of.

Claims (6)

1. the lumbar intervertebral fusion fixing device that automatic screw is fixed, it is characterised in that：Including：

The body of one PEEK materials, length is consistent with the length on the coronal inclined-plane of human body lumbar vertebra, and width is human body lumbar vertebrae vertebra The 70~80% of the sagittal plane width of body；The adhered shape human dissection mechanism of its side wall, including in side wall leading portion, side wall Section and side wall back segment, the distance between the top edge and lower edge of the side wall leading portion are from back to front along the length direction of body Axis is gradually reduced, and the top edge and lower edge in side wall stage casing are the low arc in middle high both sides, the top edge of side wall back segment Angle with lower edge and the coronal horizontal plane of people's lumbar vertebrae is 10~30 degree；The upper top surface and bottom surface of body are equipped with from going to The positioning tooth of continuously arranged triangle afterwards, before the tooth depth of the positioning tooth is 0.8~1.0mm, the positioning tooth of above-mentioned triangle Angle is 30 degree, and relief angle is 60 degree, and drift angle is 90 degree；Body have up/down perforation one before after aggregate filled cavity and one aggregate fill Chamber, the preceding aggregate filled cavity and rear aggregate filled cavity are separated by by a median wall, and the two side of preceding aggregate filled cavity has insertion Two planting in advance bone windows, the two side of rear aggregate filled cavity have insertion two after bone grafting window；The development part of one titanium alloy material is set At 1.0~1.5mm of front end on body, and away from body, to be used as structure tag in imaging process；

The fixture of one titanium alloy material, it is inwardly downward with a upper tapping screw thread through hole being upwardly and inwardly inclined and one Lower tapping screw thread through hole, angle of tapping screw thread through hole and lower tapping screw thread through hole and horizontal plane is 30 ± 10 ° on this, with The angle of sagittal plane is 10 ± 2.5 °；

Above-mentioned fixing piece is connected with the tail end of body.

2. the lumbar intervertebral fusion fixing device that automatic screw as claimed in claim 1 is fixed, it is characterised in that：The body Upper top surface and the distance between two edges at rear portion of bottom surface gradually contracted along the axis of the length direction of body from front to back It is small.

3. the lumbar intervertebral fusion fixing device that automatic screw as claimed in claim 1 is fixed, it is characterised in that：On described certainly An elastic spacing one is equipped with tapping through hole and lower tapping screw thread through hole.

4. the lumbar intervertebral fusion fixing device that automatic screw as claimed in claim 1 is fixed, it is characterised in that：The fixation Upper limit catch of the part provided with the upper tapping screw thread through hole of an adaptation, in embedded upper centrum.

5. the lumbar intervertebral fusion fixing device that automatic screw as claimed in claim 1 is fixed, it is characterised in that：The fixation Lower limit catch of the part provided with the lower tapping screw thread through hole of an adaptation, in embedded hypocentrum.

6. the lumbar intervertebral fusion fixing device that automatic screw as claimed in claim 1 is fixed, it is characterised in that：The fixation Neck of the middle part of part provided with adaptation instrument.