CN107485436A - One kind can strut spinous process fusion Interal fixation system - Google Patents
One kind can strut spinous process fusion Interal fixation system Download PDFInfo
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- CN107485436A CN107485436A CN201710796041.XA CN201710796041A CN107485436A CN 107485436 A CN107485436 A CN 107485436A CN 201710796041 A CN201710796041 A CN 201710796041A CN 107485436 A CN107485436 A CN 107485436A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8061—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates specially adapted for particular bones
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7044—Screws or hooks combined with longitudinal elements which do not contact vertebrae also having plates, staples or washers bearing on the vertebrae
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7059—Cortical plates
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7062—Devices acting on, attached to, or simulating the effect of, vertebral processes, vertebral facets or ribs ; Tools for such devices
- A61B17/7067—Devices bearing against one or more spinous processes and also attached to another part of the spine; Tools therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
- A61B17/8004—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with means for distracting or compressing the bone or bones
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/564—Methods for bone or joint treatment
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Neurology (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
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- Prostheses (AREA)
- Surgical Instruments (AREA)
Abstract
The present invention relates to medicine equipment manufacture technology field,Specifically one kind can strut spinous process fusion Interal fixation system,It is characterized in that the system is by left spinous process fixed plate,Right spinous process fixed plate and gradual change spreading mechanism composition,Left guiding square hole is provided with the middle part of left spinous process fixed plate,Left spinous process fixed plate on the outside of left guiding square hole is provided with location-plate,The middle part of location-plate is provided with locking hole,The middle part of right spinous process fixed plate is provided with right guiding square hole,The side of right spinous process fixed plate is provided with locking screw holes,Clamping screw is provided with locking screw holes,Described gradual change spreading mechanism is by upper fagging,Lower fagging,A left side struts block,The right side struts block and rotary screw composition,By rotation it is left to strut block and right strut block while move the strutting to realize strutting between spinous process gap of fagging and lower fagging in realization laterally in the presence of the rotary screw reverse thread,With simple in construction,It is easy to use,Continuous distance between expanding intervertebral foramen spinous process,Therapeutic effect is good,The advantages that mitigating patient suffering.
Description
Technical field
The present invention relates to medicine equipment manufacture technology field, specifically a kind of expansion simple in construction, easy to use, continuous
Distance, therapeutic effect are good between big intervertebral foramen spinous process, mitigate patient suffering strut spinous process fusion Interal fixation system.
Background technology
It is well known that the protrasion of the lumbar intervertebral disci is the common disease and frequently-occurring disease of orthopaedics, and clinically pain in waist and lower extremities is most common
One of the reason for.The protrasion of the lumbar intervertebral disci protrudes mainly due to degeneration of intervertebral disc, Anular disruption and nucleus pulposus, compressing
With a series of clinical symptoms and sign caused by stimulation nerve root, cauda equina nerve, the lighter can cause the limbs radiation of patient side
Property pain, numbness and muscular strength change, severe one can cause the limb motion of patient's irreversibility, sensory disturbance, or even cause big
Urine and sex dysfunction, it drastically influence quality of life and the existence life-span of patient.
At present, in order to solve the problems, such as backbone, metal dilator between the spinous process of clinical practice or experiment, its design concept is all
It is required that a certain degree of mobility is kept between Interspinalis spring and upper and lower spinous process, although this design can increase lumbar vertebrae
Mobility, but due to stress between lumbar spinous process and internal fixation device and metallic in-laid thing and host bone modulus of elasticity not
Match somebody with somebody, particularly the patient to those aged osteoporosises, fracture of spinous process can be caused, or even cause rare fracture of articular process, cause
Make operative failure, internal fixation device need to perform the operation taking-up between spinous process, finally make it is non-fused be changed to fusion, particularly by dilator
Be implanted into interspinal process, fusion device is the specific structure for strutting size, by fusion device implantation with regard to need strut distance be more than melt
Fusion device is put into by the structure of clutch size to be supported again, is so possible to cause secondary injury to backbone, particularly, installation
The distance between posterior spinous process just strut specific size, it is impossible to be adjusted according to actual conditions.
The content of the invention
Present invention aim to address above-mentioned the deficiencies in the prior art, there is provided a kind of simple in construction, easy to use, continuous expansion
Distance, therapeutic effect are good between big intervertebral foramen spinous process, mitigate patient suffering strut spinous process fusion Interal fixation system.
The technical solution adopted for the present invention to solve the technical problems is：
One kind can strut spinous process fusion Interal fixation system, it is characterised in that the system is fixed by left spinous process fixed plate, right spinous process
Plate and gradual change spreading mechanism composition, described left spinous process fixed plate middle part are provided with left guiding square hole, the left left side being oriented on the outside of square hole
Spinous process fixed plate is provided with location-plate, and the middle part of location-plate is provided with locking hole, and the both ends of left spinous process fixed plate are respectively equipped with draw point,
The middle part of described right spinous process fixed plate supplies gradual change spreading mechanism provided with corresponding with the left guiding square hole in left spinous process fixed plate
The right guiding square hole passed through, the side of right spinous process fixed plate are provided with locking screw holes, locking gradual change are provided with locking screw holes and is strutted
The clamping screw of mechanism, the both ends of described right spinous process fixed plate are respectively equipped with draw point, and described gradual change spreading mechanism is by upper support
Plate, lower fagging, a left side struts block, the right side struts block and rotary screw composition, is arranged with the inside of described upper fagging and lower fagging
Groove is strutted, the described both ends for strutting groove are respectively equipped with by the centroclinal guiding wedge surface in both ends, and described upper fagging is with
The inner side both ends of the surface of fagging are respectively equipped with the rotary screw being connected with strutting groove and pass through groove, in described upper fagging and lower fagging
The both ends for strutting groove in portion are respectively equipped with that a left side struts block and the right side struts block, and the left side struts block and the right top and bottom for strutting block
The slip wedge surface for being oriented to wedge surface with strutting groove both ends and being engaged is respectively equipped with, the left side struts block and the right side struts to be provided with the middle part of block and supplied
The screwed hole that rotary screw passes through, screwed hole is interior to be provided with rotary screw, and one end of rotary screw is passed through in left spinous process fixed plate
Locking hole in the middle part of location-plate is simultaneously connected with locking nut, and the rotary screw that the other end of rotary screw sequentially passes through left side is worn
Cross groove, it is left strut block, it is right strut block, the rotary screw on right side through groove and be provided with swivel head, described rotary screw both sides are set
Have make it is left strut block and it is right strut block and meanwhile laterally or medial movement mutually opposing screw thread, in rotary screw reverse thread
In the presence of by rotation be it is left strut block and it is right strut block and meanwhile move laterally realize above fagging and lower fagging strut into
And strutting between realizing spinous process gap.
The front and back sides of upper fagging of the present invention are respectively equipped with guiding concave-board, and the one end for being oriented to concave-board is stretched out
Fagging, the other end is concordant with the end face of upper fagging, and the front and back sides on described lower fagging are provided with to match with being oriented to concave-board
Lower fagging is stretched out in the guide plate of conjunction, one end of described guide plate, and the other end is connected with lower fagging, and guide plate is with being oriented to groove
Plate, which coordinates to slide to play a part of being oriented to, to be strutted.
The outside of the present invention for being oriented to concave-board is provided with dovetail chute, and the inner side of guide plate is provided with matches somebody with somebody with dovetail chute
The dovetail boss of conjunction, dovetail groove extend to the bottom of lower fagging inner support fluting, ensure to make while guiding struts fagging and
Lower fagging is realized and is stably connected with.
Upper fagging of the present invention and lower fagging are provided with plant hole, ensure after the completion of operation struts out of plant hole
Bony union material is implanted into, increases the stability of total.
Upper fagging of the present invention and the guiding wedge surface at lower fagging inner support fluting both ends are provided with dovetail groove, described
A left side struts block and the right slip wedge surface strutted on block is provided with the dovetail boss being engaged with dovetail groove, while ensureing to slide
The stability of connection.
At least six steel nails are respectively equipped with the inside of the both ends of left spinous process fixed plate of the present invention and right spinous process fixed plate,
The often end of left spinous process fixed plate and right spinous process fixed plate does not arrange on the same line at least provided with three steel nails, three steel nails,
Ensure the stability that left spinous process fixed plate and right spinous process fixed plate are connected with spinous process.
The present invention is due to using said structure, having the advantages that.
Brief description of the drawings
Fig. 1 is the non-expanding structure schematic diagram of fixed system of the present invention.
Fig. 2 is fixed system expanding structure schematic diagram of the present invention.
Fig. 3 is the structural representation of left spinous process fixed plate in the present invention.
Fig. 4 is the structural representation of right spinous process fixed plate in the present invention.
Fig. 5 is gradual change spreading mechanism minimum spacing structural representation in the present invention.
Fig. 6 is gradual change spreading mechanism maximum pitch structure schematic diagram in the present invention.
Fig. 7 is upper fagging structural representation in Fig. 6
Fig. 8 is the left structural representation for strutting block in Fig. 6.
Fig. 9 is the right structural representation for strutting block in Fig. 6.
Figure 10 is the structural representation of rotary screw in Fig. 6.
Figure 11 is lower fagging structural representation in Fig. 6.
Embodiment
The present invention is further described below in conjunction with the accompanying drawings：
As shown in drawings, one kind can strut spinous process fusion Interal fixation system, it is characterised in that the system is by left spinous process fixed plate
1st, right spinous process fixed plate 2 and gradual change spreading mechanism composition, the described middle part of left spinous process fixed plate 1 are provided with left guiding square hole 3, and a left side is led
Left spinous process fixed plate to the outside of square hole 3 is provided with location-plate 4, and the middle part of location-plate 4 is provided with locking hole 5, left spinous process fixed plate 1
Both ends be respectively equipped with draw point 6, the middle part of described right spinous process fixed plate 2 is provided with and the left guiding side in left spinous process fixed plate 1
The right guiding square hole 7 passed through corresponding to hole 3 for gradual change spreading mechanism, the side of right spinous process fixed plate 2 are provided with locking screw holes 8,
The clamping screw 9 of locking gradual change spreading mechanism is provided with locking screw holes 8, the both ends of described right spinous process fixed plate 2 are respectively equipped with
Draw point 6, described gradual change spreading mechanism is by upper fagging 10, lower fagging 11, a left side struts block 12, the right side struts block 13 and rotary screw 14
The inner side of composition, described upper fagging 10 and lower fagging 11, which is arranged with, struts groove 15, the described both ends for strutting groove 15 difference
Provided with wedge surface 16 is oriented to by both ends are centroclinal, the inner side both ends of the surface of described upper fagging 10 and lower fagging 11 are respectively equipped with
The rotary screw being connected with strutting groove 15 passes through groove 17, and strut groove 15 two inside described upper fagging 10 and lower fagging 11
End is respectively equipped with that a left side struts block 12 and the right side struts block 13, and the left side struts block 12 and the right top and bottom for strutting block 13 are set respectively
There is the slip wedge surface 18 for being oriented to wedge surface 16 with strutting the both ends of groove 15 and being engaged, the left side struts block 12 and the right side struts the middle part of block 13 and set
There is the screwed hole 19 passed through for rotary screw, be provided with rotary screw 14 in screwed hole 19, one end of rotary screw 14 passes through left spine
The locking hole 5 at the middle part of location-plate 4 in prominent fixed plate 1 is simultaneously connected with locking nut 24, and the other end of rotary screw 14 is successively
Through the rotary screw in left side through groove 17, a left side strut block 12, the right side struts block 13, the rotary screw on right side through groove 17 and is provided with
Swivel head 20, the described both sides of rotary screw 14, which are provided with, makes that a left side struts block 12 and the right side struts block 13 while laterally or medial movement
Mutually opposing screw thread, in the presence of the reverse thread of rotary screw 14 by rotation be that a left side struts block 12 and the right side struts block 13
Move laterally simultaneously and realize strutting and then realizing strutting between spinous process gap for upper fagging 10 and lower fagging 11, described is upper
The front and back sides of fagging 10, which are respectively equipped with, is oriented to concave-board 21, and upper fagging 10 is stretched out in the one end for being oriented to concave-board 21, the other end with
The end face of upper fagging 10 is concordant, and the front and back sides on described lower fagging 11 are provided with the guiding being engaged with being oriented to concave-board 21
Lower fagging 11 is stretched out in plate 22, one end of described guide plate 22, and the other end is connected with lower fagging 11, and guide plate 22 is recessed with being oriented to
Frid 21, which coordinates to slide to play a part of being oriented to, to be strutted, and the outside of described guiding concave-board 21 is provided with dovetail chute, guide plate
22 inner side is provided with the dovetail boss coordinated with dovetail chute, and dovetail groove extends to the bottom of the lower inner support of fagging 11 fluting, ensured
Fagging 10 and lower fagging 11 is realized and is stably connected with while guiding struts, set on described upper fagging 10 and lower fagging 11
There is plant hole 23, ensure to be implanted into Bony union material from plant hole 23 after the completion of operation struts, increase the steady of total
Qualitative, the guiding wedge surface 16 at described upper fagging 10 and the lower inner support of fagging 11 fluting both ends is provided with dovetail groove, a described left side
Strut block 12 and the right slip wedge surface 18 strutted on block 13 is provided with the dovetail boss being engaged with dovetail groove, ensure what is slided
At least six are respectively equipped with the inside of the both ends of the stability of connection simultaneously, described left spinous process fixed plate 1 and right spinous process fixed plate 2
The often end of steel nail 6, left spinous process fixed plate 1 and right spinous process fixed plate 2 is at least provided with three steel nails 6, and three steel nails 6 are not the same as always
Arranged on line, ensure the stability that left spinous process fixed plate 1 and right spinous process fixed plate 2 are connected with spinous process.
In the use of the present invention, left spinous process fixed plate 1 and gradual change spreading mechanism are placed on to the spinous process for needing to strut first
Between gap, then somewhat rotating the locking nut 24 of the left left end of spinous process fixed plate 1 makes rotary screw in gradual change spreading mechanism
14 can rotate, and then rotate rotary screw 14, make that the left side in gradual change spreading mechanism struts block 12 and the right side struts 13 outside sidesway of block
Move and then strut fagging 10 and lower fagging 11, and then two adjacent spinous process are strutted, after the completion of strutting, to locking screw
Mother 24 is locked, and then fixed gradual change spreading mechanism, and right spinous process fixed plate 2 then is packed into gradual change spreading mechanism by right side again
On, then pressurization fixation carried out to left spinous process fixed plate 1 and right spinous process fixed plate 2 by the machinery that pressurizes, passing through after the completion of fixed
Right spinous process fixed plate 2 is locked on gradual change spreading mechanism by the clamping screw 9 in right spinous process fixed plate 2 in locking screw holes 8, then is led to
Cross plant hole 23 and be implanted into Bony union material to inner side, and then that completes whole spinous process struts process.
Spinous process posterior plate of the present invention point or so two parts, left spinous process fixed plate 1 and the gradual change in centre position are supportted
Opening mechanism is connected, the initial position being easy in intervention operation, by location-plate 4 in rotary screw 14 and left spinous process fixed plate 1
Locking hole 5 position coordinate ensure gradual change spreading mechanism and the position of left spinous process fixed plate 1 it is relative constant, it is ensured that to rotate spiral shell
The consecutive variations of developed dimension centered on the center line of bar 14；Gradual change spreading mechanism can realize continuous adjustment size and secure support
Interspinous space position, its both sides spinous process fixed plate have sharp draw point 6, by can firmly be hammered into after pressurization spinous process bottom with
The displacement of its sagittal plane is fixed, middle gradual change spreading mechanism realizes the consecutive variations branch of height under the rotation of rotary screw 14
Support spinous process simultaneously merges, and right spinous process fixed plate 2 and the left almost symmetry of spinous process fixed plate 1, machine is strutted with left spinous process fixed plate 1 and gradual change
The separated state of entirety of structure, coordinated by gradual change spreading mechanism through hole in surgical procedure and symmetrically put with left spinous process fixed plate 1
Put, rotate the rotary screw 14 of centre, the left side coordinated with it struts block 12 and the right side struts block 13 and distinguished in the presence of left-hand thread
Translated to both sides, a left side struts block 12 and the right side struts block 13 and contacted with strutting groove 15 for wedge surface, and a left side struts block 12 and the right side struts block 13
The planar contact pair for promoting fagging 10 and lower fagging 11 to be worked in coordination along it by contact surface while motion moves up and down,
So that the rotary motion of rotary screw 14 is converted to the up and down motion of plane, while the auto-lock function of screw thread makes fagging 10
It can play a part of firmly supporting with lower fagging 11, the steel plate pressurization of both sides is fixed on spinous process by stand-by instrument, most rear right spine
Prominent fixed plate is tightened with clamping screw makes both sides spinous process fixed plate locked mutually, stable to support spinous process.
This fixed system is a kind of interspinal non-fixed apparatus of pedicle screw auxiliary fusion of invasive methods implantation, and it is logical
The small otch at posterial spinal fusion section position is crossed, side is attached to Interal fixation is merged on spinous process between spinous process, right
The characteristic of stock institutional framework destruction of backbone is minimum, and bleeding is few, extremely low to spinal cord and neural tissue injury's danger, operating technology safety letter
It is single, easily overhaul, the bone grafting between steel plate merge is merged in the usual art of this kind of device of steel plate between spinous process, fusion steel plate is general between spinous process
The backbone of the non-cervical vertebra section of single segmental is served only for, is also constantly expanding, is having with the maturation and diffusion, clinical indication of technology
Many multi-segmentals superposition installation Clinical practice cases, this usual fixed system and anterior lumbar spinal fusing art, lumbar vertebra posterior-path fusion art,
Intervertebral foramen of lumbar vertebra approach fusion and lumbar vertebrae dypass fusion are used in combination, and it fully and partially substitutes the pedicle screw of the way of escape
Interior fixation, for this fixed system in action principle in addition to playing the role of the fixed spinous process of fusion, itself substantially can be in body
Inside play one and persistently strut fixator effect, expand intervertebral foramen so as to reach, mitigate disc herniation and alleviate nerve root
The purpose of compressing, this fixed system is used alone to treat the report of degeneration spinal lesion, spinal canal stenosis, disc herniation,
The clinical effectiveness of fabulous pain relief and function improvement is obtained, can also be tied depending on the needs of the state of an illness and the judgment of patient in art
Close execution titanium rete and Minor articulus figure fusion, clinic are mainly used in intervertebral disk retrogression lesion, lumber spondylolisthesis, spinal canal stenosis
With wound etc..
Claims (6)
1. one kind can strut spinous process fusion Interal fixation system, it is characterised in that the system is consolidated by left spinous process fixed plate, right spinous process
Fixed board and gradual change spreading mechanism composition, described left spinous process fixed plate middle part is provided with left guiding square hole, left to be oriented on the outside of square hole
Left spinous process fixed plate is provided with location-plate, and the middle part of location-plate is provided with locking hole, and the both ends of left spinous process fixed plate are respectively equipped with steel
Pin, the middle part of described right spinous process fixed plate strut machine provided with corresponding with the left guiding square hole in left spinous process fixed plate for gradual change
The right guiding square hole that structure passes through, the side of right spinous process fixed plate are provided with locking screw holes, locking gradual change support are provided with locking screw holes
The clamping screw of opening mechanism, the both ends of described right spinous process fixed plate are respectively equipped with draw point, and described gradual change spreading mechanism is by upper
Fagging, lower fagging, a left side struts block, the right side struts block and rotary screw composition, and the inner side of described upper fagging and lower fagging is symmetrically set
Strut groove, the described both ends for strutting groove are respectively equipped with by the centroclinal guiding wedge surface in both ends, described upper fagging and
The inner side both ends of the surface of lower fagging are respectively equipped with the rotary screw being connected with strutting groove and pass through groove, described upper fagging and lower fagging
The internal both ends for strutting groove are respectively equipped with that a left side struts block and the right side struts block, the left side strut block and the right upper end for strutting block and under
End is respectively equipped with the slip wedge surface for being oriented to wedge surface with strutting groove both ends and being engaged, and the left side struts block and the right side struts and is provided with the middle part of block
The screwed hole passed through for rotary screw, screwed hole is interior to be provided with rotary screw, and one end of rotary screw is passed through in left spinous process fixed plate
Location-plate in the middle part of locking hole and be connected with locking nut, the other end of rotary screw sequentially passes through the rotary screw in left side
Through groove, a left side strut block, the right side struts block, the rotary screw on right side through groove and is provided with swivel head, described rotary screw both sides
Provided with make it is left strut block and it is right strut block and meanwhile laterally or medial movement mutually opposing screw thread, in the reverse spiral shell of rotary screw
In the presence of line by rotation be it is left strut block and it is right strut block while move laterally realize strutting for above fagging and lower fagging
And then realize strutting between spinous process gap.
2. one kind according to claim 1 can strut spinous process fusion Interal fixation system, it is characterised in that described upper support
The front and back sides of plate are respectively equipped with guiding concave-board, and upper fagging, the end of the other end and upper fagging are stretched out in the one end for being oriented to concave-board
Face is concordant, and the front and back sides on described lower fagging are provided with the guide plate being engaged with being oriented to concave-board, described guide plate
One end stretch out lower fagging, the other end is connected with lower fagging, and guide plate plays guiding with guiding concave-board cooperation slip and strutted
Effect.
3. one kind according to claim 2 can strut spinous process fusion Interal fixation system, it is characterised in that described guiding
The outside of concave-board is provided with dovetail chute, and the inner side of guide plate is provided with the dovetail boss coordinated with dovetail chute, dovetail groove extension
To the bottom of lower fagging inner support fluting, ensure to make fagging and lower fagging realize and be stably connected with while guiding struts.
4. one kind according to claim 1 can strut spinous process fusion Interal fixation system, it is characterised in that described upper support
Plate and lower fagging are provided with plant hole, ensure to be implanted into Bony union material from plant hole after the completion of operation struts, increase is whole
The stability of individual structure.
5. one kind according to claim 1 can strut spinous process fusion Interal fixation system, it is characterised in that described upper support
Plate and the guiding wedge surface at lower fagging inner support fluting both ends are provided with dovetail groove, and a described left side struts block and the right cunning strutted on block
Dynamic wedge surface is provided with the dovetail boss being engaged with dovetail groove, ensures the stability connected while slip.
A kind of 6. reducing spinous process fusion Interal fixation system according to claim 1, it is characterised in that described left spinous process
At least six steel nails, left spinous process fixed plate and right spinous process fixed plate are respectively equipped with the inside of the both ends of fixed plate and right spinous process fixed plate
Often end do not arranged on the same line at least provided with three steel nails, three steel nails.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710796041.XA CN107485436B (en) | 2017-09-06 | 2017-09-06 | Spinous process fusion steel plate fixing system capable of being opened |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710796041.XA CN107485436B (en) | 2017-09-06 | 2017-09-06 | Spinous process fusion steel plate fixing system capable of being opened |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109009381A (en) * | 2018-07-17 | 2018-12-18 | 常州集硕医疗器械有限公司 | Fusing device is fixed between spinous process |
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| CN107485436B (en) | 2023-07-21 |
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