CN201949111U - Percutaneous pedicle screw internal fixation device - Google Patents
Percutaneous pedicle screw internal fixation device Download PDFInfo
- Publication number
- CN201949111U CN201949111U CN2011200118490U CN201120011849U CN201949111U CN 201949111 U CN201949111 U CN 201949111U CN 2011200118490 U CN2011200118490 U CN 2011200118490U CN 201120011849 U CN201120011849 U CN 201120011849U CN 201949111 U CN201949111 U CN 201949111U
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- CN
- China
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- inserter
- pedicle screw
- hold
- down bars
- fixed bar
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Abstract
The utility model belongs to a percutaneous pedicle screw internal fixation device used in a medical clinical operation and particularly used in the percutaneous pedicle screw internal fixation of the columna vertebralis of a patient. The percutaneous pedicle screw internal fixation device is characterized in that a movable arm is mounted on an installation pillar through a connecting shaft, a fixed bar inserter is mounted at the right end of the movable arm, a T-shaped groove is processed at the lower end of the fixed bar inserter and is used for mounting and connecting a fixed bar, a small hole is processed on the T-shaped groove of the fixed bar inserter and used for mounting a thumbstall, a long hole is processed inside the fixed bar inserter and used for mounting a top bead, and a tightening bolt is mounted at the upper end of the fixed bar inserter. The percutaneous pedicle screw internal fixation device has simple use process, short operation time, overcomes the limitation that a universal bolt is difficult to straighten and reset better, and ensures that the fixed-angle pedicle screw with a screw seat has the advantages of strong straightening and resetting strength.
Description
Technical field:
This utility model belongs to the clinical medicine employed a kind of percutaneous cervical arc root screw inner fixing device of performing the operation, and specifically is applied to patient's spinal column percutaneous cervical arc root screw internal fixation.
Background technology:
At present for the orthopedic internal fixation of spinal column percutaneous cervical arc root screw, main adjustable by Universal-head screw nail seat angle, thus a nail seat side opening is arranged in be implemented in being installed on cover bucket on the nail seat that skin is outer to be installed in fixedly connected rod on the nail seat by sighting device.But because the restriction of universal screw itself, its be difficult to carry out good orthopedic with reset.And fixed angle nail seat pedicle screw has advantage orthopedic, that the strength that resets is strong, but behind the percutaneous pedicle screw, is difficult to percutaneous and inserts fixedly connected rod.
The utility model content:
The purpose of this utility model just is to overcome above-mentioned shortcoming, and a kind of percutaneous cervical arc root screw inner fixing device that provides.
This utility model is achieved in that a kind of percutaneous cervical arc root screw inner fixing device, by column is installed, lever arm, puller bolt, connecting axle, the hold-down bars inserter, nut, stricture of vagina tooth locking plate, fastener, being connected and fixed rod and spherical adjustable nail-plate angle pedicle screw forms, it is characterized in that: on the installation column, lever arm is installed by connecting axle, right-hand member at lever arm is equipped with the hold-down bars inserter, be processed with the T-shape groove in the lower end of hold-down bars inserter, this T-shape groove is used for installation and is connected and fixed rod, on the T-shape groove of hold-down bars inserter, be processed with aperture, be used to install thimble, inside at the hold-down bars inserter is processed with slotted hole, be used to install the decorative pearl on top of an official cap, puller bolt be installed in the upper end of hold-down bars inserter.
Sphere of the present utility model is adjustable, and nail-plate angle pedicle screw is mounted on the spinal vertebral of human body, on the pedicle screw of the adjustable nail-plate of sphere angle, fastener is installed, in fastener, be equipped with and be connected and fixed rod, stricture of vagina tooth locking plate is installed on fastener, upper end at the adjustable nail-plate of sphere angle pedicle screw is equipped with nut, the angle of spherical adjustable nail-plate angle pedicle screw in the hole of fastener is adjustable, angle mixes up the back and fixes by stricture of vagina tooth locking plate and nut, in the upper end of the adjustable nail-plate of a sphere angle pedicle screw installation column is installed.
Description of drawings:
Fig. 1 is a scheme of installation of the present utility model.
Fig. 2 is the C-C cutaway view of Fig. 1.
Fig. 3 is the B-B cutaway view of Fig. 1.
Fig. 4 is the D-D cutaway view of Fig. 1, and this cutaway view amplifies 2 times.
Fig. 5 is the A-A cutaway view of Fig. 1.
Fig. 6 is the signal of lever arm when work, and dotted line is original position figure.
Fig. 7 be lever arm be connected and fixed rod and fix after sketch map.
Fig. 8 is lever arm and the sketch map that is connected and fixed after rod enters first fastener.
Each label declaration is as follows among the figure:
1, column is installed, 2, lever arm, 3, puller bolt, 4, connecting axle, 5, the hold-down bars inserter, 6, the decorative pearl on top of an official cap, 7, thimble, 8 nuts, 9, stricture of vagina tooth locking plate, 10, fastener, 11, be connected and fixed rod, 12, spherical adjustable nail-plate angle pedicle screw, 13, baffle ring, 14, spinal column dorsal part skin, 15, the spinal vertebral of human body.
The specific embodiment:
Now describe embodiment of the present utility model in conjunction with the accompanying drawings in detail.
This utility model is installed column 1 and is selected the rustless steel processing and manufacturing for use, it is mounted in the top of spherical adjustable nail-plate angle pedicle screw 12 and fixing with nut 8, spherical adjustable nail-plate angle pedicle screw 12 is to insert earlier on the spinal vertebral of human body, on installation column 1, connecting axle 4 is installed, connecting axle 4 is selected the rustless steel processing and manufacturing for use and is riveted on column 1 is installed, lever arm 2 is selected the rustless steel processing and manufacturing for use, rotate around connecting axle 4 during its work, hold-down bars inserter 5 is selected the rustless steel processing and manufacturing for use, see that in profile it is curved, cross section on arcual top is square, and be welded on the right-hand member of lever arm 2, cross section in arcual bottom is rounded, circular hole is processed in inside at hold-down bars inserter 5, be used to install the decorative pearl on top of an official cap 6, upper end at hold-down bars inserter 5 is processed with screw thread, be used to install puller bolt 3, be processed with the T-shape groove in the lower end of hold-down bars inserter 5, be used for installing and be connected and fixed excellent 11, be connected and fixed rod 11 and select the titanium alloy processing and manufacturing for use, it is the effect that connects and fix the spinal vertebral of two human bodies, porose in the processing of the top of T-shape groove, be used to install thimble 7, spherical adjustable nail-plate angle pedicle screw 12, select the titanium alloy processing and manufacturing for use, on the adjustable nail-plate of sphere angle pedicle screw 12, fastener 10 is installed, stricture of vagina tooth locking plate 9 is installed on fastener 10, fastener 10 and stricture of vagina tooth locking plate 9 are all selected the titanium alloy processing and manufacturing for use, baffle ring 13 is selected the rustless steel processing and manufacturing for use, it is installed on the connecting axle 4, and its effect is to guarantee that lever arm 2 does not come off when connecting axle 4 work.
An existing routine needs of patients is done spine corrective operation, be installed in the T-shape groove of hold-down bars inserter 5 being connected and fixed rod 11 earlier, and screw puller bolt 3, again the adjustable nail-plate of sphere angle pedicle screw 12 is inserted respectively on the adjacent vertebral body of spinal column in patient's body, respectively fastener 10, stricture of vagina tooth locking plate 9 and nut 8 are installed on the spherical adjustable nail-plate angle pedicle screw 12, and make nut 8 and stricture of vagina tooth locking plate 9 will keep about 2-4 mm clearance, mainly be to guarantee that fastener 10 and stricture of vagina tooth locking plate 9 are movable adjustable, being installed, column 1 is installed on any one spherical adjustable nail-plate angle pedicle screw 12 again, and it is fixing by nut 8, again lever arm 2 is installed on the connecting axle 4, and baffle ring 13 is installed on the connecting axle 4, this moment, hold-down bars inserter 5 (see figure 7)s began to rotate around connecting axle 4, and by spinal column dorsal part skin 14, insert (see figure 8) in first fastener 10 being connected and fixed rod 11, because the fastener 10 of this moment and stricture of vagina tooth locking plate 9 are movable adjustable, so can enter very smoothly, and continue to move forward into (see figure 6) in second fastener, this moment is earlier fastening the nut on second fastener, the opposite spin puller bolt 3 again, again baffle ring 13 is taken out, take off lever arm 2 and hold-down bars inserter 5, take off again column 1 is installed, and the nut on fastening another fastener fastening 8. is sewed up the edge of a knife again and got final product.Certainly described above only is how to come simple description process from the angle of installing, and it is complicated in detail that the process of concrete operation is also wanted.
This utility model is applicable to that percutaneous cervical arc root screw internal fixation pedicle screw-rod is orthopedic, spinal fixation bone, deformity or degenerative disease etc.
In sum, this utility model uses technology simple, and operating time is short, has promptly overcome universal screw and has been difficult to carry out the good orthopedic and restriction that resets, and guarantees that again a fixed angle nail seat pedicle screw has advantage orthopedic, that the strength that resets is strong.
Claims (4)
1. percutaneous cervical arc root screw inner fixing device, by column is installed, lever arm, puller bolt, connecting axle, the hold-down bars inserter, nut, stricture of vagina tooth locking plate, fastener, being connected and fixed rod and spherical adjustable nail-plate angle pedicle screw forms, it is characterized in that: on the installation column, lever arm is installed by connecting axle, right-hand member at lever arm is equipped with the hold-down bars inserter, be processed with the T-shape groove in the lower end of hold-down bars inserter, on the T-shape groove of hold-down bars inserter, be processed with aperture, thimble is installed in aperture, inside at the hold-down bars inserter is processed with slotted hole, and the decorative pearl on top of an official cap is installed in slotted hole.
2. a kind of percutaneous cervical arc root screw inner fixing device according to claim 1 is characterized in that: the top of the right-hand member of lever arm and hold-down bars inserter is welding.
3. a kind of percutaneous cervical arc root screw inner fixing device according to claim 1 and 2, it is characterized in that: the upper end at the hold-down bars inserter is equipped with puller bolt.
4. a kind of percutaneous cervical arc root screw inner fixing device according to claim 1 and 2 is characterized in that: baffle ring is installed on connecting axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200118490U CN201949111U (en) | 2011-01-17 | 2011-01-17 | Percutaneous pedicle screw internal fixation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200118490U CN201949111U (en) | 2011-01-17 | 2011-01-17 | Percutaneous pedicle screw internal fixation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201949111U true CN201949111U (en) | 2011-08-31 |
Family
ID=44493242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200118490U Expired - Fee Related CN201949111U (en) | 2011-01-17 | 2011-01-17 | Percutaneous pedicle screw internal fixation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201949111U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106361413A (en) * | 2015-07-24 | 2017-02-01 | 镱钛科技股份有限公司 | Puncture guiding apparatus |
-
2011
- 2011-01-17 CN CN2011200118490U patent/CN201949111U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106361413A (en) * | 2015-07-24 | 2017-02-01 | 镱钛科技股份有限公司 | Puncture guiding apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110831 Termination date: 20120117 |