CN208274609U - A kind of variable diameter spinous process fusion Interal fixation system - Google Patents
A kind of variable diameter spinous process fusion Interal fixation system Download PDFInfo
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- CN208274609U CN208274609U CN201721136453.2U CN201721136453U CN208274609U CN 208274609 U CN208274609 U CN 208274609U CN 201721136453 U CN201721136453 U CN 201721136453U CN 208274609 U CN208274609 U CN 208274609U
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Abstract
The utility model relates to medical instrument manufacture technology fields, specifically a kind of variable diameter spinous process merges 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, cyclic annular ratchet slot is equipped in the middle part of the left spinous process fixed plate, left spinous process fixed plate in the middle part of cyclic annular ratchet slot is equipped with connecting screw hole, it is equipped with gradual change spreading mechanism in the middle part of right spinous process fixed plate and passes through hole, right spinous process fixed plate side is equipped with locking hole, clamping screw is equipped in locking hole, gradual change spreading mechanism is by taper block, taper block adjusting rod, connecting screw composition, it is simple with structure, it is easy to use, it is continuous to expand distance between intervertebral foramen spinous process, therapeutic effect is good, the advantages that mitigating patient suffering.
Description
Technical field
The present invention relates to medical instrument manufacture technology field, specifically a kind of simple, easy to use, continuous expansion of structure
Distance, therapeutic effect are good between big intervertebral foramen spinous process, mitigate the variable diameter spinous process of patient suffering merges Interal fixation system.
Background technique
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 of.The protrasion of the lumbar intervertebral disci is mainly due to degeneration of intervertebral disc, and Anular disruption and nucleus pulposus are prominent, compressing
With a series of clinical symptoms and sign caused by stimulation nerve root, cauda equina nerve, less serious case can cause patient side limbs to radiate
Property pain, numbness and muscular strength change, severe one can lead to the limb motion of patient's irreversibility, sensory disturbance, or even cause big
Urine and sex dysfunction drastically influence quality of life and the existence service life of patient.
Currently, metal dilator between the spinous process of clinical application or test, design concept is all in order to solve the problems, such as backbone
It is required that a degree of mobility is kept between Interspinalis spring and upper and lower spinous process, although this design can increase lumbar vertebrae
Mobility, but not due to stress between lumbar spinous process and internal fixation device and metallic in-laid object and host bone elasticity modulus
Match, especially the patient to those aged osteoporosises, can lead to fracture of spinous process, 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, especially by dilator
It is implanted into interspinal process, fusion device is the specific structure for strutting size, and fusion device implantation is greater than with regard to needing to strut distance and is melted
Fusion device is put by the structure of clutch size to be supported again, is possible to cause secondary injury to backbone in this way, in particular, installation
The distance between posterior spinous process just strut specific size, cannot be adjusted according to the actual situation.
Summary of the invention
Present invention aim to address above-mentioned the deficiencies in the prior art, provide a kind of structure simple, easy to use, continuous expansion
Distance, therapeutic effect are good between big intervertebral foramen spinous process, mitigate the variable diameter spinous process of patient suffering merges Interal fixation system.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of variable diameter 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, are equipped with cyclic annular ratchet slot in the middle part of the left spinous process fixed plate, in the middle part of cyclic annular ratchet slot
Left spinous process fixed plate is equipped with connecting screw hole, is equipped with steel nail, the right spinous process fixed plate on the inside of the both ends of left spinous process fixed plate
Middle part is equipped with gradual change spreading mechanism and passes through hole, and right spinous process fixed plate side, which is equipped with, passes through the lock that hole is connected with gradual change spreading mechanism
The both ends inside of tieholen, the interior clamping screw being equipped with for locking gradual change spreading mechanism of locking hole, right spinous process fixed plate is equipped with steel
Nail, the gradual change spreading mechanism are made of taper block, taper block adjusting rod, connecting screw, and the section of the taper block is in
Ellipse, one end of the taper block adjusting rod pass through taper block and are equipped with the annular ratchets being equipped with left spinous process fixed plate
The ratchet that slot matches, the other end of taper block pass through the gradual change spreading mechanism that right spinous process fixed plate is equipped with and pass through the right side Kong Bingjing
The clamping screw that spinous process fixed plate is equipped with is locked, and the taper block adjusting rod is set as middle part and is equipped with the logical of both ends open
Hole, the through-hole is interior to be equipped with connecting screw, and one end of the connecting screw, which is equipped with, connect spiral shell in the middle part of left spinous process fixed plate
The external screw thread that hole matches, the other end of connecting screw are equipped with swivel head, and one end of the connecting screw is solid by left spinous process
Connecting screw hole on fixed board is connected with left spinous process fixed plate, and the other end passes through the through-hole inside taper block adjusting rod and realizes left spine
Prominent fixed plate is connected with gradual change spreading mechanism.
The end for the swivel head that connecting screw of the present invention is equipped with is equipped with interior hexagonal swivel head, is rotated by outside
Mechanism is rotated, and structure is simple, facilitates operation.
The lateral surface of clamping screw of the present invention is equipped with interior hexagonal swivelling chute, and structure is simple, facilitates operation.
At least six steel nails are respectively equipped on the inside of the both ends of left spinous process fixed plate of the present invention and right spinous process fixed plate,
Every 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,
Guarantee the stability that left spinous process fixed plate is connect with right spinous process fixed plate with spinous process.
The present invention is due to using the above structure, having many advantages, such as.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Fig. 2 is the cross-sectional view of Fig. 1.
Fig. 3 is left spinous process fixed plate structure schematic diagram in the present invention.
Fig. 4 is right spinous process fixed plate structure schematic diagram in the present invention.
Fig. 5 is the structural schematic diagram of taper block adjusting rod in the present invention.
Fig. 6 is the structural schematic diagram of connecting screw in the present invention.
Specific embodiment
The following further describes the present invention with reference to the drawings:
As shown in the picture, a kind of variable diameter spinous process merges Interal fixation system, it is characterised in that the system is fixed by left spinous process
Plate 1, right spinous process fixed plate 2 and gradual change spreading mechanism form, and it is uniformly distributed that annular array is equipped in the middle part of the left spinous process fixed plate 1
Ratchet slot 3, the left spinous process fixed plate 1 at cyclic annular 3 middle part of ratchet slot are equipped with connecting screw hole 4, the both ends inside of left spinous process fixed plate 1
Gradual change spreading mechanism is equipped with equipped with steel nail 5, in the middle part of the right spinous process fixed plate 2 and passes through hole 6, and right 2 side of spinous process fixed plate is set
Have and pass through the locking hole 7 that hole 6 is connected with gradual change spreading mechanism, the lock for locking gradual change spreading mechanism is equipped in locking hole 7
The both ends inside of tight bolt 8, right spinous process fixed plate 2 is equipped with steel nail 5, and the gradual change spreading mechanism is by taper block 9, taper block tune
Pole 10, connecting screw 11 form, the ellipsoidal cross section of the taper block 9, one end of the taper block adjusting rod 10
Across taper block 9 and be equipped with the ratchet 12 that matches with the annular ratchets slot 3 that left spinous process fixed plate 1 is equipped with, taper block 9 it is another
One end passes through the locking that the gradual change spreading mechanism that right spinous process fixed plate 2 is equipped with passes through hole 6 and is equipped with through right spinous process fixed plate 2
Bolt 8 is locked, and the taper block adjusting rod 10 is set as the through-hole 13 that middle part is equipped with both ends open, in the through-hole 13
Equipped with connecting screw 11, one end of the connecting screw 11 is equipped with to be matched with left 1 middle part connecting screw hole 4 of spinous process fixed plate
The other end of external screw thread, connecting screw 11 is equipped with swivel head 14, and one end of the connecting screw 11 passes through left spinous process fixed plate 1
On connecting screw hole 4 be connected with left spinous process fixed plate 1, the other end pass through taper block adjusting rod 10 inside through-hole 13 realize a left side
Spinous process fixed plate 1 is connected with gradual change spreading mechanism, and the end for the swivel head 14 that the connecting screw 11 is equipped with is equipped with interior
Hexagonal swivel head is rotated by external rotating mechanism, and structure is simple, facilitates operation, the lateral surface of the clamping screw 8
It is equipped with interior hexagonal swivelling chute, structure is simple, facilitates operation, the both ends of the left spinous process fixed plate 1 and right spinous process fixed plate 2
Inside is respectively equipped at least six steel nails 5, and every end of left spinous process fixed plate 1 and right spinous process fixed plate 2 is at least provided with three steel nails
5, three steel nails 5 do not arrange on the same line, and it is steady to guarantee that left spinous process fixed plate 1 is connect with right spinous process fixed plate 2 with spinous process
It is qualitative.
In the use of the present invention, left spinous process fixed plate 1 and gradual change spreading mechanism are put at the gap between spinous process first,
Then connecting screw 11 is slightly unscrewed, and then taper block adjusting rod 10 can rotate, taper block adjusting rod 10 is rotated, in ratchet
12 and ratchet slot 3 under the action of can only single direction rotation, with taper block adjusting rod 10 rotation drive taper block 9 rotation, gradually
Become block 9 and gradually strut interspinal interstice, slowly reach required width, then rotates connecting screw 11, pass through connecting screw 11
Gradual change spreading mechanism is fixed in left spinous process fixed plate 1, then again by 2 sets of right spinous process fixed plate in taper block adjusting rod 10
On, by the way that left spinous process fixed plate 1 and right spinous process fixed plate 2 to be fixed on to the two sides of spinous process after pressurization, finally clamping screw 8 is revolved
Turn, right spinous process fixed plate 2 is locked on taper block adjusting rod 10, completes the fixation of entire spinous process fusion steel plate system, this hair
The connection structure of the bright ratchet slot and ratchet is exactly ratchet mechanism, in order to make taper block of the invention only towards a side
It to rotation, and cannot turn round, the mechanism that the purpose can be equally reached by other replaces.
Left spinous process fixed plate 1 and right spinous process fixed plate 2 are connection structure in spinous process fixed system of the present invention, and left spinous process is fixed
Each there are six steel needle 5 respectively on plate 1 and right spinous process fixed plate 2, these steel needles 5 are to hammer into bottom at left and right sides of spinous process to play rigidity
The effect of adjacent spinous is supported, the entity of 10 its own variable diameter of taper block adjusting rod is inserted into the space under two interspinous ligaments
Interior, the size by taper block 9 itself withstands spinous process, is formed together taking care of yourself for dual support with spinous process fixed plate, left spinous process is fixed
Plate 1 and connecting screw 11 pass through the mutual cooperation of ratchet and ratchet slot on its contact surface, when rotating taper block adjusting rod 10,
The relative angle of its variable-diameter block 9 and left spinous process fixed plate 1 cooperates ratchet to play the role of monodirectional locking with variation, can be with
Variable-diameter block 9 is allowed to stop at any time to adapt to the demand of different support sizes, connecting screw 11 passes through among taper block adjusting rod 10
Through-hole 13 be connected with the connecting screw hole 4 in left spinous process fixed plate 1, the end of the other side of connecting screw 11 is pressed in taper block
The end of adjusting rod 10 when rotating taper block adjusting rod 10 needs connecting screw 11 to unscrew, to allow taper block adjusting rod 10
Ratchet with left spinous process fixed plate 1 can be with gear motion, when rotating to suitable position, and connecting screw 11 rotates the locked guarantor of screw thread
Card taper block adjusting rod will not unclamp, and have gradual change spreading mechanism to pass through hole 6 among right spinous process fixed plate 2, be inserted into one locked
In the left spinous process fixed plate 1 and taper block adjusting rod 10 of body, the steel needle of two plates of left and right is forcibly inserted into two by pressurization instrument
Locking hole 7 is arranged at the prominent bottom of gemmule, the top of right spinous process fixed plate 2, and clamping screw 8 is directly pressed onto taper block by locking hole 7
On the cylindrical body of adjusting rod 10, the work of locking is had reached, by dual locking, the entire strong fixed spinous process of fixed system, surely
Surely spinous process is supported.
Fixed system of the invention is a kind of interspinal non-pedicle screw auxiliary fusion fixator of invasive methods implantation
Tool, it passes through the small notch at posterial spinal fusion segment position, and side is attached to backbone spine for Interal fixation is merged between spinous process
Minimum to the characteristic of stock institutional framework destruction of backbone on prominent, bleeding is few, extremely low to spinal cord and neural tissue injury's danger, operates skill
Art is safe and simple, is easy to overhaul, and the bone grafting between merging steel plate is merged in the usual art of this kind of device of steel plate between spinous process, is merged between spinous process
Steel plate is normally only used for the backbone of the non-cervical vertebra section of single segmental, and with the maturation and diffusion of technology, clinical indication is also continuous
Expansion, have many multi-segmentals superposition installation clinical use cases, usual this system is melted with anterior lumbar spinal fusing art, lumbar vertebral posterior
It closes art, intervertebral foramen of lumbar vertebra approach fusion and lumbar vertebrae dypass fusion to be used in combination, it fully and partially replaces the vertebral arch of the way of escape
The interior fixation of root screw, for the system in action principle other than playing the role of merging fixed spinous process, itself substantially can be
Playing the role of one persistently struts fixator in vivo, expands intervertebral foramen so as to reach, mitigates disc herniation and alleviates nerve
The purpose of root compressing, come in also to have it is many fusion steel plate is used alone between spinous process treat degeneration spinal lesion, spinal canal stenosis,
The report of disc herniation obtains fabulous pain relief and clinical effectiveness that function improves, regarded in art the state of an illness needs and
For the judgment of patient also in combination with titanium rete and Minor articulus figure fusion is implemented, clinic is mainly used for intervertebral disk retrogression disease
Change, lumber spondylolisthesis, spinal canal stenosis and wound etc..
Claims (4)
1. a kind of variable diameter spinous process merges 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, the left spinous process fixed plate middle part are equipped with cyclic annular ratchet slot, the left side in the middle part of cyclic annular ratchet slot
Spinous process fixed plate is equipped with connecting screw hole, is equipped with steel nail on the inside of the both ends of left spinous process fixed plate, in the right spinous process fixed plate
Portion is equipped with gradual change spreading mechanism and passes through hole, and right spinous process fixed plate side, which is equipped with, passes through the locking that hole is connected with gradual change spreading mechanism
The both ends inside in hole, the interior clamping screw being equipped with for locking gradual change spreading mechanism of locking hole, right spinous process fixed plate is equipped with steel nail,
The gradual change spreading mechanism is made of taper block, taper block adjusting rod, connecting screw, and the section of the taper block is in ellipse
Shape, one end of the taper block adjusting rod pass through taper block and are equipped with the annular ratchets slot phase being equipped with left spinous process fixed plate
The ratchet of cooperation, the other end of taper block pass through the gradual change spreading mechanism that right spinous process fixed plate is equipped with and pass through the right spinous process of Kong Bingjing
The clamping screw that fixed plate is equipped with is locked, and the taper block adjusting rod is set as the through-hole that middle part is equipped with both ends open,
Connecting screw is equipped in the through-hole, one end of the connecting screw is equipped with and connecting screw hole phase in the middle part of left spinous process fixed plate
The other end of the external screw thread of cooperation, connecting screw is equipped with swivel head, and one end of the connecting screw passes through left spinous process fixed plate
On connecting screw hole be connected with left spinous process fixed plate, the other end passes through the through-hole inside taper block adjusting rod and realizes that left spinous process is solid
Fixed board is connected with gradual change spreading mechanism.
2. a kind of variable diameter spinous process according to claim 1 merges Interal fixation system, it is characterised in that the connection spiral shell
The end for the swivel head that bar is equipped with is equipped with interior hexagonal swivel head.
3. a kind of variable diameter spinous process according to claim 1 merges Interal fixation system, it is characterised in that the locking screw
The lateral surface of bolt is equipped with interior hexagonal swivelling chute.
4. a kind of variable diameter spinous process according to claim 1 merges Interal fixation system, it is characterised in that the left spinous process
At least six steel nails, left spinous process fixed plate and right spinous process fixed plate are respectively equipped on the inside of the both ends of fixed plate and right spinous process fixed plate
Every end at least provided with three steel nails, three steel nails do not arrange on the same line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721136453.2U CN208274609U (en) | 2017-09-06 | 2017-09-06 | A kind of variable diameter spinous process fusion Interal fixation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721136453.2U CN208274609U (en) | 2017-09-06 | 2017-09-06 | A kind of variable diameter spinous process fusion Interal fixation system |
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| CN208274609U true CN208274609U (en) | 2018-12-25 |
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| CN201721136453.2U Active CN208274609U (en) | 2017-09-06 | 2017-09-06 | A kind of variable diameter spinous process fusion Interal fixation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107374716A (en) * | 2017-09-06 | 2017-11-24 | 博能华医疗器械（北京）有限公司 | A kind of reducing spinous process merges Interal fixation system |
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2017
- 2017-09-06 CN CN201721136453.2U patent/CN208274609U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107374716A (en) * | 2017-09-06 | 2017-11-24 | 博能华医疗器械（北京）有限公司 | A kind of reducing spinous process merges Interal fixation system |
| CN107374716B (en) * | 2017-09-06 | 2023-07-25 | 博能华医疗器械（北京）有限公司 | Reducing spinous process fusion steel plate fixing system |
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