CN203693723U - Mosaic screw-rod system for spinal internal fixation - Google Patents
Mosaic screw-rod system for spinal internal fixation Download PDFInfo
- Publication number
- CN203693723U CN203693723U CN201320595659.7U CN201320595659U CN203693723U CN 203693723 U CN203693723 U CN 203693723U CN 201320595659 U CN201320595659 U CN 201320595659U CN 203693723 U CN203693723 U CN 203693723U
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- CN
- China
- Prior art keywords
- screw
- internal fixation
- rod
- orthopedic rod
- orthopedic
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to the technical field of spinal internal fixation medical instruments, belongs to a screw-rod system for spinal internal fixation, and discloses a mosaic screw-rod system for spinal internal fixation. The system comprises an open screw (1), an orthopedic rod (2), a U-shaped ferrule (3) and a cross slot nut (4), wherein one side of the head of the open screw (1) is opened, so that the mosaic position of the orthopedic rod (2) can be conveniently checked; two ends of the open slot adopt ball-shaped arcs, so that the orthopedic rod (2) can axially rotate in the range of 0-15 degrees; and an inverted U-shaped opening is formed in each of two sides of the U-shaped ferrule (3), the sizes of the openings are matched with the size of the orthopedic rod (2), and the orthopedic rod (2) is sleeved with the U-shaped ferrule (3) according to the well-adjusted angle as required and then clamped and tightened by the cross slot nut (4). The screw-rod system is convenient to mount and adjustable in angle, can be easily matched with other screws for use and can be widely applied to various fixation and orthopedic operations of spine.
Description
Technical field
This utility model is a kind of inserted vertebral column internal fixation nail stick system, relates to internal fixation of spine technical field of medical instruments, is applicable to the fixing orthopedic inner fixing device of pedicle of vertebral arch.
Background technology
Spinal internal fixation system pattern is various at present, more common to follow closely the excellent structure connecting, but the time of these products before fixing is longer, connect more complicated, the adjusting of its angle always be unable to do without doctor's clinical experience and skill, human factors proportion is larger, in X perspective imaging quite ripe today, situation for spinal column patient can be very clear, for example, when causing between vertebral body, spinal fracture or slippage misplace, need to correct how many angles can reset, or according to the degree of scoliosis before operation, in judgement operation, can correct how many angles etc., can measure accurately by modern armarium.
Summary of the invention
The purpose of this utility model is to provide one and is easy to install, and orthopedic accurate, inserted vertebral column internal fixation nail stick system is easily prepared in operation.
This utility model is to be achieved through the following technical solutions:
This utility model is by opening screw (1), Orthopedic rod (2), U-shaped cutting ferrule (3), cross recess nut (4) composition, there is a side opening structure middle and upper part of its opening screw (1), be convenient to being connected of Orthopedic rod (2) and opening screw (1), select a suitable U-shaped cutting ferrule (3), guarantee to be after Orthopedic rod (2) and opening screw (1) are fixed the angle of certain needs, Orthopedic rod (2) is to be embedded in opening screw (1), there is a side open groove inlaying place, open slot interior shape is C shape arc, be convenient to the position of checking that Orthopedic rod (2) is inlayed, the two ends of open slot are bulb circular arc, can be by 0 °～15 ° of Orthopedic rod (2) axial-rotations, respectively there is an inverted U opening both sides of U-shaped cutting ferrule (3), the size of opening matches with Orthopedic rod (2), adjusting as required angle puts U-shaped cutting ferrule (3) and blocks Orthopedic rod (2) and tighten cross recess nut (4), cross recess nut (4) band female thread, top has a cross to twist alveolus.
Fixed effect of the present utility model can carry out rationally effectively preparing before operation, accomplishes to have a well-though-out plan, shoot the arrow at the target, and degree as orthopedic in needs, the angular adjustment of pitman and screw, can simulate fixing in the preoperative.Thereby make operation plan more rationally more accurate.
Brief description of the drawings
Fig. 1 is general assembly structural representation of the present utility model.
Fig. 2 is opening bolt structure schematic diagram of the present utility model.
Fig. 3 is U-shaped ferrule structure schematic diagram of the present utility model.
Fig. 4 is cross recess hatband structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
This utility model is by opening screw (1), Orthopedic rod (2), U-shaped cutting ferrule (3), cross recess nut (4) composition, first Orthopedic rod (2) is passed through in the opening of opening screw (1), after adjusting angle, overlap a U-shaped cutting ferrule (3) on the top of opening screw (1), the U-shaped size of guaranteeing the U-shaped cutting ferrule (3) of selecting is consistent with the overall dimensions of Orthopedic rod used, because, when human spine's sections is fixed, be fixed between opening screw (1) in pedicle of vertebral arch and Orthopedic rod (2) and need there is certain angle, this is because the normal spinal column of human body has certain physiological bending radian, and the physiological bending in different spinal vertebral stages is not identical yet, therefore can not be in vertical state between opening screw (1) and Orthopedic rod (2), so must select different U-shaped cutting ferrules according to different angles.
U-shaped cutting ferrule (3) is tightened cross recess nut (4) to fix each part after installing, if become the multistage to fix, can to be screwed in multistage pedicle of vertebral arch by fixing screw by first lock, pre-bending Orthopedic rod again, Orthopedic rod after curved is embedded in each opening screw, put rational U-shaped cutting ferrule (3) and tighten cross recess nut (4), this utility model also can use with lifting screw fit, for the fixed system of centrum olisthe.
Claims (3)
1. this utility model is a kind of inserted vertebral column internal fixation nail stick system, formed by opening screw (1), Orthopedic rod (2), U-shaped cutting ferrule (3), cross recess nut (4), it is characterized in that, Orthopedic rod (2) is to be embedded in opening screw, there is a side open groove inlaying place, open slot interior shape is C shape arc, is convenient to observe Orthopedic rod (2) angle and position.
2. according to the inserted vertebral column internal fixation nail stick system described in claims 1, it is characterized in that, respectively there is the arc port of an inverted U shape both sides of U-shaped cutting ferrule (3), and its size matches with Orthopedic rod (2) external diameter.
3. according to the inserted vertebral column internal fixation nail stick system described in claims 1, it is characterized in that, cross recess nut (4) band female thread, top has a cross to twist indent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320595659.7U CN203693723U (en) | 2013-09-26 | 2013-09-26 | Mosaic screw-rod system for spinal internal fixation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320595659.7U CN203693723U (en) | 2013-09-26 | 2013-09-26 | Mosaic screw-rod system for spinal internal fixation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203693723U true CN203693723U (en) | 2014-07-09 |
Family
ID=51044239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320595659.7U Expired - Fee Related CN203693723U (en) | 2013-09-26 | 2013-09-26 | Mosaic screw-rod system for spinal internal fixation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203693723U (en) |
-
2013
- 2013-09-26 CN CN201320595659.7U patent/CN203693723U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 065201 Tianshan Industrial Park, north of Hua Da Nan Road, Yanjiao Development Zone, Sanhe, Hebei 22 Co-patentee after: Zhang Jianting Patentee after: Hebei Bo Chuan Medical Equipment Co., Ltd. Address before: 065201 Tianshan Industrial Park, north of Hua Da Nan Road, Yanjiao Development Zone, Sanhe, Hebei 22 Co-patentee before: Zhang Jianting Patentee before: Sanhe City Mai Dike Medical Devices Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20200926 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |