CN201768026U - Long-tail pedicle orthopedic screw - Google Patents
Long-tail pedicle orthopedic screw Download PDFInfo
- Publication number
- CN201768026U CN201768026U CN2010202556584U CN201020255658U CN201768026U CN 201768026 U CN201768026 U CN 201768026U CN 2010202556584 U CN2010202556584 U CN 2010202556584U CN 201020255658 U CN201020255658 U CN 201020255658U CN 201768026 U CN201768026 U CN 201768026U
- Authority
- CN
- China
- Prior art keywords
- long
- orthopedic
- tail
- screw head
- screw
- Prior art date
- 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 - Lifetime
Links
- 230000000399 orthopedic effect Effects 0.000 title claims abstract description 44
- 238000010079 rubber tapping Methods 0.000 claims abstract description 5
- 239000012634 fragment Substances 0.000 claims description 4
- 230000006378 damage Effects 0.000 abstract description 5
- 210000000080 chela (arthropods) Anatomy 0.000 description 6
- 208000014674 injury Diseases 0.000 description 5
- 208000027418 Wounds and injury Diseases 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 210000000693 hamate bone Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 208000015122 neurodegenerative disease Diseases 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
Images
Classifications
-
- 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
- A61B17/7083—Tools for guidance or insertion of tethers, rod-to-anchor connectors, rod-to-rod connectors, or longitudinal elements
- A61B17/7085—Tools for guidance or insertion of tethers, rod-to-anchor connectors, rod-to-rod connectors, or longitudinal elements for insertion of a longitudinal element down one or more hollow screw or hook extensions, i.e. at least a part of the element within an extension has a component of movement parallel to the extension's axis
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Neurology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The utility model discloses a long-tail pedicle orthopedic screw, which relates to medical instruments, and comprises a tapping screw and a screw head, wherein the screw head is provided with a slot hole which is provided with an orthopedic rod, an inner thread is arranged in the slot hole, the screw head is provided with a long tail guiding sleeve, a connecting position of the long tail guiding sleeve and the screw head is provided with a cutting slot, a guiding through slot is arranged in the long tail guiding sleeve, the guiding through slot is communicated with the slot hole, outer portion of the guiding sleeve is provided with a pressing rod cylinder in sliding, and the front end of the pressing rod cylinder is provided with a pressing rod slot port. The long coccygeal vertebra arch root orthopedic screw is planted in a pedicle in use, the orthopedic rod is inserted in the guiding through slot, and the orthopedic rod is steadily pressed in the slot hole of the screw head through downwardly sliding the pressing rod cylinder. The long-tail pedicle orthopedic screw is simple in structure, convenient in operation, and uniform in force of the orthopedic rod, thereby preventing form causing secondary damage to spine, and being suitable for orthopedic position of the spine.
Description
Technical field
The present invention relates to medical apparatus and instruments, say it is the orthopedic nail of a kind of long-tail pedicle of vertebral arch in detail.
Background technology
We know that at present to the disease of spinal trauma, slippage, degenerative disease and other spinal instability, to adopt vertebra fixer to carry out orthopedic, fixing more.Existing spinal fixing device kind is more, and Ha Shi rod commonly used, Shandong Ge Shi rod etc. are installed composition by the orthopedic nail of pedicle of vertebral arch, hamulus of hamate bone etc.The orthopedic nail of existing pedicle of vertebral arch comprises tapping screw and screw head, and screw head offers the slotted eye that orthopedic rod is installed, and is provided with female thread in the slotted eye.During use, screw is implanted in the pedicle of vertebral arch, in the slotted eye of screw head, be pressed into orthopedic rod, be screwed into the plug screw that matches then and push down orthopedic rod with the pressure bar pincers.Since use the pressure bar pincers in the slotted eye of screw head, to be pressed into orthopedic rod, inconvenient operation, the dynamics that the pressure bar pincers are pushed downwards is difficult for controlling, and orthopedic excellent unbalance stress causes the secondary injury to vertebra easily.
Summary of the invention
The technical problem that the present invention solves is, solving the orthopedic nail of existing pedicle of vertebral arch need use the pressure bar pincers to be pressed into orthopedic rod in the slotted eye of screw head, inconvenient operation, the dynamics that the pressure bar pincers are pushed downwards is difficult for controlling, orthopedic excellent unbalance stress, the problem that causes secondary to injure to vertebra easily, providing a kind of is pressed into orthopedic rod and does not use pressure bar pincers in the slotted eye of screw head, simple in structure, easy to operate, orthopedic rod is stressed evenly, avoids vertebra is caused the orthopedic nail of long-tail pedicle of vertebral arch of secondary injury.
Technical scheme of the present invention is, the orthopedic nail of a kind of long-tail pedicle of vertebral arch comprises tapping screw and screw head, and screw head offers the slotted eye that orthopedic rod is installed, be provided with female thread in the slotted eye, the primary structure characteristics are, screw head is provided with the long-tail guide pin bushing, and long-tail guide pin bushing and screw head junction are provided with the cut-out groove, be provided with guide groove in the long-tail guide pin bushing, guide groove is communicated with slotted eye, and outer slip of guide pin bushing is provided with the pressure bar tube, and pressure bar tube front end is provided with the pressure bar notch.
The guide pin bushing of the present invention outside is provided with serrated face, and corresponding pressure bar tube with serrated face is provided with shell fragment.
The invention has the beneficial effects as follows, because screw head is provided with the long-tail guide pin bushing, be provided with guide groove in the long-tail guide pin bushing, guide groove is communicated with slotted eye, the outer slip of guide pin bushing is provided with the pressure bar tube, pressure bar tube front end is provided with the pressure bar notch, during use, screw is implanted in the pedicle of vertebral arch, orthopedic rod is inserted guide groove, to lower slider pressure bar tube, orthopedic rod is pressed into stably in the slotted eye of screw head, simple in structure, easy to operate, orthopedic rod is subjected to evenly, avoid vertebra is caused the orthopedic nail of pedicle of vertebral arch of secondary injury, be applicable to the orthopedic location of vertebra.
Description of drawings
Fig. 1, Fig. 2, Fig. 3 are a kind of structural representations of the present invention, also are the sketch maps of a kind of embodiment; Fig. 1 is a front view, and Fig. 2 is the vertical view of long-tail screw among Fig. 1, and Fig. 3 is the vertical view of pressure bar tube among Fig. 1.
The specific embodiment
As Fig. 1, Fig. 2, the orthopedic nail of a kind of long-tail pedicle of vertebral arch shown in Figure 3, comprise tapping screw 1 and screw head 2, screw head 2 offers the slotted eye 8 that orthopedic rod is installed, be provided with female thread in the slotted eye 8, screw head 2 is provided with long-tail guide pin bushing 4, and long-tail guide pin bushing 4 is provided with screw head 2 junctions and cuts off groove 3, be provided with guide groove 9 in the long-tail guide pin bushing 4, guide groove 9 is communicated with slotted eye 8, and long-tail guide pin bushing 4 outer slips are provided with pressure bar tube 7, and pressure bar tube 7 front ends are provided with pressure bar notch 10.During use, screw is implanted in the pedicle of vertebral arch, orthopedic rod is inserted in the guide groove 9, to lower slider pressure bar tube 7, the pressure bar notch 10 of pressure bar tube 7 front ends sticks orthopedic rod and moves down, and orthopedic rod is pressed into stably in the slotted eye 8 of screw head 2, and is simple in structure, easy to operate, orthopedic rod is subjected to evenly, avoids vertebra is caused the orthopedic nail of pedicle of vertebral arch of secondary injury; Use the plug screw that matches with slotted eye 8 female threads orthopedic rod to be fastened in the slotted eye 8 of screw head 2 then, cutting off groove 3 places, take out long-tail guide pin bushing 4 and pressure bar tube 7 at last long-tail guide pin bushing 4 and screw head 2 cut-outs.Long-tail guide pin bushing 4 outsides are provided with serrated face 6 among the present invention, are provided with shell fragment 5 with serrated face 6 corresponding pressure bar tubes 7, and serrated face 6 matches with shell fragment 5 can realize pressure bar tube 7 admissions, prevent orthopedic rod press down after perk once more, make the pressure bar process more stable.
Claims (2)
1. orthopedic nail of long-tail pedicle of vertebral arch, comprise tapping screw and screw head, screw head offers the slotted eye that orthopedic rod is installed, be provided with female thread in the slotted eye, it is characterized in that: screw head is provided with the long-tail guide pin bushing, and long-tail guide pin bushing and screw head junction are provided with the cut-out groove, be provided with guide groove in the long-tail guide pin bushing, guide groove is communicated with slotted eye, and outer slip of guide pin bushing is provided with the pressure bar tube, and pressure bar tube front end is provided with the pressure bar notch.
2. the orthopedic nail of long-tail pedicle of vertebral arch according to claim 1 is characterized in that: the said guide pin bushing outside is provided with serrated face, and corresponding pressure bar tube with serrated face is provided with shell fragment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202556584U CN201768026U (en) | 2010-07-13 | 2010-07-13 | Long-tail pedicle orthopedic screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202556584U CN201768026U (en) | 2010-07-13 | 2010-07-13 | Long-tail pedicle orthopedic screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201768026U true CN201768026U (en) | 2011-03-23 |
Family
ID=43747853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202556584U Expired - Lifetime CN201768026U (en) | 2010-07-13 | 2010-07-13 | Long-tail pedicle orthopedic screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201768026U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102525637A (en) * | 2012-02-21 | 2012-07-04 | 上海拓腾医疗器械有限公司 | Pedicle screw component |
| CN102813547A (en) * | 2011-06-09 | 2012-12-12 | 克里斯特尔·帕罗特 | Surgical instrument |
-
2010
- 2010-07-13 CN CN2010202556584U patent/CN201768026U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102813547A (en) * | 2011-06-09 | 2012-12-12 | 克里斯特尔·帕罗特 | Surgical instrument |
| CN102813547B (en) * | 2011-06-09 | 2016-08-10 | 克里斯特尔·帕罗特 | Surgical instrument |
| CN102525637A (en) * | 2012-02-21 | 2012-07-04 | 上海拓腾医疗器械有限公司 | Pedicle screw component |
| CN102525637B (en) * | 2012-02-21 | 2014-11-12 | 上海三友医疗器械有限公司 | Pedicle screw component |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110323 |
|
| CX01 | Expiry of patent term |