CN208145051U - A kind of pressurization connection structure of pedicle screw - Google Patents
A kind of pressurization connection structure of pedicle screw Download PDFInfo
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- CN208145051U CN208145051U CN201720739430.4U CN201720739430U CN208145051U CN 208145051 U CN208145051 U CN 208145051U CN 201720739430 U CN201720739430 U CN 201720739430U CN 208145051 U CN208145051 U CN 208145051U
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Abstract
The utility model belongs to medical instruments field, more particularly to a kind of pressurization connection structure of pedicle screw, including two pedicle screws, each pedicle of vertebral arch screw, which nails on, is equipped with U-shaped through slot, U-shaped through slot internal screw thread is connected with jackscrew, and jackscrew presses U-shaped link block in U-shaped through slot, and two U-shaped link blocks are linked into an integrated entity by the straight-bar that pressurizes, the straight-bar that pressurizes is equipped with light bar segment and thread segment, and light bar segment is threaded through in the U-shaped link block that one is located between flange and positioning pin；Thread segment is threaded in another U-shaped link block.The utility model has the beneficial effects that：It can intuitively and accurately be adjusted by the thread and strut the distance between two vertebra sections, be convenient for surgical procedure, such as bone grafting；Thread segment is rotated in the forward direction, keeps a U-shaped link block mobile to another U-shaped link block, is integrated conducive to adjacent two vertebra section bone uptakes healing, pressing closely can greatly shorten the patients ' recovery period, and surgical result is good.
Description
Technical field
The utility model belongs to medical instruments field, and in particular to a kind of pressurization connection structure of pedicle screw.
Background technique
The protrasion of the lumbar intervertebral disci is relatively conventional one of illness, is primarily due to lumber ertebral disc each section (nucleus pulposus, fiber
Ring and cartilage plate), especially nucleus pulposus, after having different degrees of degenerative change, under the action of external force factor, the fibre of interverbebral disc
Ring breakage is tieed up, nucleus pulposus in rear or intraspinal tube, causes adjacent spinal nerve root to be pierced from rupture place prominent (or abjection)
Swash or oppresses, so that flank pain is generated, a series of clinical symptoms such as side lower limb or double lower limb numbness, pain.Lumber ertebral disc
Herniation accounts for about 95% with waist 4~5,1 disease incidence highest of waist 5- sacrum.
Currently, the case where for more serious protrusion of lumber intervertebral disc, doctor often takes operation to take out lumbar vertebrae outstanding
Disk, and strut at the vacant locations of the lumber ertebral disc taken out originally to plug some physiology fillers (other portions of body
Position bone, metal with physiological compatibility etc.), final two adjacent vertebra energy conservations are carried out healing by way of bone uptake and are
One.Wherein, for strutting gap at the vacant locations of the lumber ertebral disc taken out originally, doctor is not easy to hold scale, hand
Art is complicated for operation；In addition, after plugging filler, if the insufficient or adjacent two vertebra sections pressing of filler is not tight,
It is difficult progress bone uptake healing to be integrated, to influence the patients ' recovery period, or even operative treatment must also be carried out again.
Summary of the invention
The purpose of the utility model is to overcome defects of the existing technology, and screw thread can intuitively and accurately be passed through by providing one kind
Adjusting struts the distance between two vertebra sections, is convenient for surgical procedure, such as bone grafting；Thread segment is rotated in the forward direction, so as to by two
The pressing of vertebra section is close, is integrated conducive to adjacent two vertebra section bone uptakes healing, pressing closely can greatly shorten patients ' recovery
Period, the pressurization connection structure of the good pedicle screw of surgical result.
Technical solution adopted by the utility model to solve its technical problems is：A kind of pressurization connection knot of pedicle screw
Structure comprising two pedicle screws are equipped with U-shaped through slot, equal screw thread in each U-shaped through slot in the nail seat of each pedicle screw
It is connected with jackscrew, thread center's line of jackscrew is overlapped with the central axis of pedicle screw, and jackscrew presses U-shaped link block in U
In type through slot, two U-shaped link blocks are linked into an integrated entity by the straight-bar that pressurizes, and pressurization straight-bar is equipped with light bar segment and thread segment, light
The flange being fixed between two U-shaped link blocks in rod segment is also threaded with positioning pin in light bar segment, and light bar segment is worn
It is located in the U-shaped link block between flange and positioning pin at one；Thread segment is threaded in another U-shaped link block.
Wherein, two U-shaped link blocks of the utility model are linked into an integrated entity by the straight-bar that pressurizes, and light bar segment is threaded through one
It is located in the U-shaped link block between flange and positioning pin；Thread segment is threaded in another U-shaped link block；The structure
Pre-assembled can be carried out in the production phase.In operation, according to the spacing of two vertebra sections, doctor is positive in another U-shaped link block
Or thread segment is reversely rotated, it is adjusted and suitably hammers into spacing.Then, it is hammered into from pedicle of vertebral arch to vertebra in two pedicle screws
After body leading edge, the connection structure of preassembled U-shaped link block and pressurization straight-bar is percutaneously penetrated into two U-shaped through slots.Then,
Jackscrew is screwed, thread segment is reversely rotated；Since flange and positioning pin fix U-shaped link block, where the U-shaped link block
Pedicle screw is fixed, so that its vertebra section hammered into is also fixed；Opposite, another adjacent vertebra section is with screw thread
It reversely rotates far from fixed vertebra section, is strutted between two vertebra sections so that doctor can intuitively and accurately be adjusted by the thread
Distance, be convenient for surgical procedure, such as bone grafting.Finally, rotating in the forward direction thread segment after plugging sufficient physiology filler, making
One U-shaped link block is mobile to another U-shaped link block, is integrated conducive to adjacent two vertebra section bone uptakes healing, pressing is tight
Close greatly to shorten the patients ' recovery period, surgical result is good.
Specifically, it is equipped with allen wrench hole at the top of two jackscrews, convenient for carrying out rotational fastener, behaviour by die nut
Facilitate, is not easy to loosen after fastening.
Similarly, thread segment is equipped with allen wrench hole far from the outer end face of light bar segment.
Specifically, pressurization straight-bar is tubular, hollow bar, and positioning pin is threaded in the screw thread on the tube wall of light bar segment
In blind hole.In advance, the U of the nail seat to two pedicle screws percutaneously can be successively penetrated using thinner seal wire or guide pin as auxiliary
In type through slot, then the pore for the straight-bar that pressurizes is set on seal wire or guide pin, and carries out blind wear to two vertebras along seal wire or guide pin
In the nail seat of pedicle screw, to realize the pre-connection of two pedicle screws.When the edge of U-shaped link block is touched to U-shaped through slot
Cell wall outside when, can the position of appropriate adjustment seal wire or guide pin in U-shaped through slot, to smoothly penetrating U-shaped link block to U-shaped
In through slot, realize that each pedicle screw is attached fixation.The utility model can carry out two U of guiding by seal wire or guide pin
The integral structure of type link block avoids U-shaped link block from misdrawing leakage and wears pedicle screw, and disposable wearing is set as function, improves operation
Efficiency reduces the injury to injected organism tissue.
Further, each U-shaped link block is the gradual shrinkage barred body matched with U-shaped through slot, and two U-shaped connections
The large end face of block is provided opposite to.I.e. U-shaped link block leading portion is standard U-shaped structure, and back segment can be according to human spine physiological curve
It is made into a radian processing.The structure can match with the crooked radian between two adjacent vertebra sections, be conducive to postoperative rehabilitation.
Further, the contact surface of jackscrew and U-shaped link block is the plane with the central axis upright of pedicle screw,
Contact surface is bigger, and press effect is good.
A kind of beneficial effect of the pressurization connection structure of pedicle screw of the utility model is：
1. doctor can intuitively and accurately be adjusted by the thread and strut the distance between two vertebra sections, it is convenient for surgical procedure, such as
Bone grafting etc.；
2. thread segment is rotated in the forward direction after plugging sufficient physiology filler, so as to close, the benefit by two vertebra section pressings
It is integrated in adjacent two vertebra section bone uptakes healing, pressing closely can greatly shorten the patients ' recovery period, operative treatment effect
Fruit is good.
Detailed description of the invention
Utility model will be further described in detail below with reference to the attached drawings and specific embodiments.
Fig. 1 is a kind of tomograph one of the pressurization connection structure of pedicle screw of the utility model；
Fig. 2 is the partial enlarged view of part A in Fig. 1；
Fig. 3 is a kind of left view of the pressurization connection structure of pedicle screw of the utility model；
Fig. 4 is a kind of tomograph two of the pressurization connection structure of pedicle screw of the utility model.
Wherein:1. pedicle screw, 101.U type through slot；2. jackscrew；3.U type link block；4. pressurize straight-bar, 401. polished rods
Section, 402. thread segments, 403. flanges；5. positioning pin.
Specific embodiment
The utility model is described in further detail presently in connection with attached drawing.These attached drawings are simplified schematic diagram,
Only illustrate the basic structure of the utility model in a schematic way, therefore it only shows composition related with the utility model.
A kind of specific embodiment of the pressurization connection structure of the pedicle screw of the utility model as Figure 1-Figure 4,
It includes two pedicle screws 1, is equipped with U-shaped through slot 101 in the nail seat of each pedicle screw 1, in each U-shaped through slot 101
It is threaded with jackscrew 2, thread center's line of jackscrew 2 is overlapped with the central axis of pedicle screw 1, and jackscrew 2 is by U-shaped connection
Block 3 presses in U-shaped through slot 101, and two U-shaped link blocks 3 are linked into an integrated entity by the straight-bar 4 that pressurizes, and pressurization straight-bar 4 is equipped with light
Rod segment 401 and thread segment 402, the flange 403 being fixed in light bar segment 401 between two U-shaped link blocks 3, light bar segment 401
On be also threaded with positioning pin 5, light bar segment 401 is threaded through the U-shaped connection being located between flange 403 and positioning pin 5
In block 3；Thread segment 402 is threaded in another U-shaped link block 3.
Wherein, two of the present embodiment U-shaped link blocks 3 are linked into an integrated entity by the straight-bar 4 that pressurizes, and light bar segment 401 is threaded through
In one U-shaped link block 3 being located between flange 403 and positioning pin 5；Thread segment 402 is threaded in another U-shaped connection
In block 3；The structure can carry out pre-assembled in the production phase.In operation, according to the spacing of two vertebra sections, doctor is U-shaped at another
Thread segment 402 is rotated in link block 3 forward or backwards, is adjusted and suitably hammers into spacing.Then, in two pedicle screws
1 hammers into from pedicle of vertebral arch to anterior margin of vertebral body, by the connection structure of preassembled U-shaped link block 3 and pressurization straight-bar 4 percutaneously penetrate to
In two U-shaped through slots 101.Then, jackscrew 2 is screwed, thread segment 402 is reversely rotated；Since flange 403 and positioning pin 5 are by U-shaped company
It connects block 3 to fix, therefore the pedicle screw 1 where the U-shaped link block 3 is fixed, so that its vertebra section hammered into is also fixed
's；Opposite, another adjacent vertebra section is with the reverse rotation of screw thread and far from fixed vertebra section, so that doctor can be intuitive
It is accurately adjusted by the thread and struts the distance between two vertebra sections, be convenient for surgical procedure, such as bone grafting.Finally, being filled when plugging
After the physiology filler of foot, thread segment 402 is rotated in the forward direction, keeps a U-shaped link block 3 mobile to another U-shaped link block 3, benefit
It is integrated in adjacent two vertebra section bone uptakes healing, pressing closely can greatly shorten the patients ' recovery period, operative treatment effect
Fruit is good.
Specifically, it is equipped with allen wrench hole at the top of two jackscrews 2, convenient for carrying out rotational fastener by die nut,
It is easy to operate, it is not easy to loosen after fastening.
Similarly, thread segment 402 is equipped with allen wrench hole far from the outer end face of light bar segment 401.
Specifically, pressurization straight-bar 4 is tubular, hollow bar, and positioning pin 5 is threaded on the tube wall of light bar segment 401
In tapped blind hole.In advance, it percutaneously can successively be penetrated to the nail of two pedicle screws 1 using thinner seal wire or guide pin as auxiliary
In the U-shaped through slot 101 of seat, then the pore for the straight-bar 4 that pressurizes is set on seal wire or guide pin, and carries out blind wear along seal wire or guide pin
Into the nail seat of two pedicle screws 1, to realize the pre-connection of two pedicle screws 1.When the edge of U-shaped link block 3
When touching to outside the cell wall of U-shaped through slot 101, can the position of appropriate adjustment seal wire or guide pin in U-shaped through slot 101, thus by U-shaped company
It connects block 3 smoothly to penetrate into U-shaped through slot 101, realizes that each pedicle screw 1 is attached fixation.The utility model can pass through
Seal wire or guide pin carry out the integral structure of two U-shaped link blocks 3 of guiding, avoid U-shaped link block 3 from misdrawing leakage and wear pedicle screw 1,
Disposable wearing is set as function, improves procedure efficiency, reduces the injury to injected organism tissue.
Further, each U-shaped link block 3 is the gradual shrinkage barred body matched with U-shaped through slot 101, and two U-shaped
The large end face of link block 3 is provided opposite to.I.e. U-shaped 3 leading portion of link block is standard U-shaped structure, and back segment can be raw according to human spine
Reason curve is made into a radian processing.The structure can match with the crooked radian between two adjacent vertebra sections, be conducive to postoperative
Rehabilitation.
Further, the contact surface of jackscrew 2 and U-shaped link block 3 is flat with the central axis upright of pedicle screw 1
Face, contact surface is bigger, and press effect is good.
It should be appreciated that specific embodiment described above is only used for explaining the utility model, it is not used to limit this reality
With novel.By the utility model the obvious changes or variations extended out of spirit still in the utility model protection
Among range.
Claims (2)
1. a kind of pressurization connection structure of pedicle screw, it is characterised in that：Including two pedicle screws (1), each pedicle of vertebral arch
It is equipped in the nail seat of screw (1) U-shaped through slot (101), is threaded with jackscrew (2) in each U-shaped through slot (101), it is described
Thread center's line of jackscrew (2) is overlapped with the central axis of pedicle screw (1), and the jackscrew (2) pushes up U-shaped link block (3)
It is pressed in U-shaped through slot (101), two U-shaped link blocks (3) are linked into an integrated entity by pressurization straight-bar (4), the pressurization straight-bar (4)
Be equipped with light bar segment (401) and thread segment (402), be fixed on the light bar segment (401) positioned at two U-shaped link blocks (3) it
Between flange (403), be also threaded with positioning pin (5) on the light bar segment (401), the light bar segment (401) is threaded through one
In a U-shaped link block (3) being located between flange (403) and positioning pin (5)；The thread segment (402) is threaded in separately
In one U-shaped link block (3)；
The thread segment (402) is equipped with allen wrench hole far from the outer end face of light bar segment (401).
2. a kind of pressurization connection structure of pedicle screw according to claim 1, it is characterised in that：The pressurization straight-bar
It (4) is tubular, hollow bar, and the positioning pin (5) is threaded in the tapped blind hole on the tube wall of light bar segment (401).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720739430.4U CN208145051U (en) | 2017-06-22 | 2017-06-22 | A kind of pressurization connection structure of pedicle screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720739430.4U CN208145051U (en) | 2017-06-22 | 2017-06-22 | A kind of pressurization connection structure of pedicle screw |
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| Publication Number | Publication Date |
|---|---|
| CN208145051U true CN208145051U (en) | 2018-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720739430.4U Active CN208145051U (en) | 2017-06-22 | 2017-06-22 | A kind of pressurization connection structure of pedicle screw |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111728683A (en) * | 2020-07-15 | 2020-10-02 | 四川大学华西医院 | Centrum embedded fixing device |
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2017
- 2017-06-22 CN CN201720739430.4U patent/CN208145051U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111728683A (en) * | 2020-07-15 | 2020-10-02 | 四川大学华西医院 | Centrum embedded fixing device |
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