CN201847761U - Fixing device in upper thoracic spine anterior titanium plate - Google Patents
Fixing device in upper thoracic spine anterior titanium plate Download PDFInfo
- Publication number
- CN201847761U CN201847761U CN2010205455937U CN201020545593U CN201847761U CN 201847761 U CN201847761 U CN 201847761U CN 2010205455937 U CN2010205455937 U CN 2010205455937U CN 201020545593 U CN201020545593 U CN 201020545593U CN 201847761 U CN201847761 U CN 201847761U
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- titanium plate
- fixing device
- thoracic vertebra
- upper thoracic
- thoracic spine
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- Expired - Fee Related
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Abstract
The utility model discloses an fixing device in an upper thoracic spine anterior titanium plate, comprising a titanium plate with an approximate rectangle shape, and four corners of the titanium plate are arc-shaped; the titanium plate provided with longitudinal curvature and spine body transverse curvature radius which are fit with the anatomical characteristics of the upper thoracic spine of a human body; one end of the titanium plate in longitudinal direction is provided with two ball-shaped through holes used for installing locking screws; a locking piece is arranged between the two ball-shaped through holes; the locking piece is connected with the titanium plate through a pin shaft; and the other end of the titanium plate in longitudinal direction is provided with two long sliding grooves respectively used for installing a fixing bolt and a locking screw. The fixing device in the upper thoracic spine anterior titanium plate is simple in structure and convenient for operation, and can be correctly installed and fixed in a relatively narrow and deep field of an operation; and the fixing device in the upper thoracic spine anterior titanium plate has good fixing effect, is not easy to injure important tissues around and can better recover physiologic alignment of the upper thoracic spine.
Description
Technical field
This utility model relates to a kind of orthopedic fixation device tool, specifically is a kind of preceding road of thoracic vertebra titanium plate inner fixing device of going up.
Background technology
Being applied to the capable vertebral resection of thoracic vertebra pathological changes the place ahead anterior approach, spinal canal decompression, internal fixation at present rebuilds and selects throat road titanium panel assembly mostly for use.There is following shortcoming in this inner fixing device: 1. because the titanium plate is that vertical radian of titanium plate is opposite with the physiologic radian of last thoracic vertebra according to the design of the anatomical features of cervical vertebra, and the last thoracic vertebra of its chordwise curvature radius is big, the internal fixation applying is poor.Inverse bending titanium plate can influence its intensity.2. the screw that is used for throat road titanium plate is shorter, makes screw loosening with the anchor of the last thoracic vertebra Xiao Yi that makes a concerted effort, and is fixing firm inadequately.3, throat road titanium plate does not pressurize and struts function.4. because the vertebral body anatomical position is darker herein, operating field is narrow and small relatively, and throat road titanium plate has blocked a part of operating field, departs from a side when titanium plate is installed, easily the blood vessel around the damage, esophagus etc.5. cervical vertebra titanium plate is too thin, and enough intensity can not be provided, thereby may cause that internal fixation fractures makes operative failure.
The utility model content
The technical problems to be solved in the utility model provides a kind of inner fixing device that is fit to go up the preceding road of thoracic vertebra anatomical features, to fill up the blank of this regional internal fixation shortage both at home and abroad.
This utility model solves the problems of the technologies described above with following technology: the preceding road of thoracic vertebra titanium plate inner fixing device comprises that profile is similar to rectangular titanium plate on this utility model, four corners of titanium plate are the circular arc angle, the titanium plate have with human body on suitable vertical curvature of thoracic vertebra anatomical features and vertebral body chordwise curvature radius, a titanium plate end longitudinally has two spherical through holes that are used to install lock screw, between two spherical through holes locking plate is installed, locking plate is connected with the titanium plate through bearing pin, and the titanium plate other end longitudinally has two and is respectively applied for the microscler chute that installs and fixes bolt and lock screw.
The above-mentioned ailhead slightly larger in diameter of the lock screw in the microscler chute that places is in the short slotted eye of microscler chute.
As required, can offer the bone screw chute that is used to install bone screw at the middle part of titanium plate.
The preceding road of thoracic vertebra titanium plate inner fixing device is according to the anatomical features research design of last thoracic vertebra on this utility model, the titanium plate has and suitable vertical curvature of last thoracic vertebra anatomical features and vertebral body chordwise curvature radius, need not inverse bending, more meet the physiological characteristics of thoracic vertebra.The utlity model has simple in structure, easy to operate, can narrow and small relatively deeply operating field in internal fixation accurately is installed, good fixing effect, vital tissue around the easy damaged not, and by pressurization with strut the physiology sequence that function just can better be recovered thoracic vertebra.
Description of drawings
Fig. 1 is the structural representation of the preceding road of thoracic vertebra titanium plate inner fixing device on this utility model.
Fig. 2 is the A-A profile of Fig. 1.
Fig. 3 is the B-B profile of Fig. 1.
Among the figure: 1. lock screw, 2. locking plate, 3. titanium plate, 4. bone screw chute, 5. locking nut, 6. microscler chute, 7. set bolt, 8. bearing pin.
The specific embodiment
As shown in drawings, the preceding road of thoracic vertebra titanium plate inner fixing device mainly is made of titanium plate 3 and 4-5 screw on this utility model, the profile of titanium plate 3 is similar to rectangle, four corners of titanium plate 3 are the circular arc angle, titanium plate 3 have with human body on suitable vertical curvature of thoracic vertebra anatomical features and vertebral body chordwise curvature radius, titanium plate vertically upper end has two spherical through holes that are used to install lock screw 1, between two spherical through holes locking plate 2 is installed, the top of locking plate 2 is provided with the counterbore that stretches into for bottle opener, the bottom of locking plate 2 is provided with the bearing pin 8 that passes titanium plate 3, by bearing pin 8 locking plate 2 is turned an angle to fix the lock screw of its both sides on the titanium plate, the vertical lower end of titanium plate has two and is respectively applied for the microscler chute 6 that installs and fixes bolt 7 and lock screw 1, and the ailhead slightly larger in diameter that wherein places the lock screw 1 in the microscler chute 6 is in the short slotted eye of microscler chute 6.
Above-mentioned and the contacted spherical through hole of screw or microscler chute are equipped with the sphere shrinkage pool.
It is 2.5mm that this utility model adopts the thickness of titanium plate, and the length of titanium plate is 25-65mm, and every 5mm increases progressively, and the width of titanium plate is 18mm; The length of lock screw is 16-22mm, and every 2mm increases progressively, and the diameter of lock screw has two kinds of 4.0mm and 4.25mm; The length of set bolt is 16-22mm, and every 2mm increases progressively, and diameter is 5.0mm.
When using this utility model device to go up the thoracic vertebra internal fixation, boring earlier in operation process, depth measurement, be screwed into set bolt 7 (cohesion 8 degree of set bolt) after the tapping, then titanium plate 3 is inserted in the upper end of set bolt 7, two spherical through hole borings (cohesion 8 degree during boring at the titanium plate other end, to head 15 degree that incline) be screwed into lock screw 1 after the depth measurement tapping, after carrying out and pressurize, tightens by the apparatus that reuse is special the locking nut 5 of set bolt 7, in the boring of microscler chute 6 places on set bolt 7 next doors, depth measurement, be screwed into lock screw 1 (cohesion 8 degree of lock screw) after the tapping, last rotation lock stator 2, make locking plate 2 withhold the lock screw of its both sides, thereby prevent that these two pieces of lock screw from getting loose good fixing effect.
As required, this utility model can also be offered bone screw chute 4 at the middle part of titanium plate 3, and this chute is so that be screwed into bone screw where necessary.
All parts of the present utility model all adopt medical titanium alloy to make.
Titanium plate of the present utility model has and suitable vertical curvature of last thoracic vertebra anatomical features and vertebral body chordwise curvature radius, need not inverse bending during installation, does not influence the intensity of internal fixation, and is more firm.The supporting screw of the relative cervical vertebra titanium of the screw plate that this utility model adopts is longer and thicker, because the pull-out strength of screw is relevant with the length and the diameter of screw, the length that screw is implanted vertebral body is long more, and the anchor of screw and vertebral body is made a concerted effort big more, constant intensity is good more, thereby is difficult for loosening.This utility model can narrow and small relatively deeply operating field in internal fixation accurately is installed, good fixing effect, vital tissue around the easy damaged not, and by pressurization with strut the physiology sequence that function just can better be recovered thoracic vertebra.
Claims (4)
1. go up the preceding road of thoracic vertebra titanium plate inner fixing device, comprise that profile is similar to rectangular titanium plate, it is characterized in that: four corners of titanium plate are the circular arc angle, the titanium plate have with human body on suitable vertical curvature of thoracic vertebra anatomical features and vertebral body chordwise curvature radius, a titanium plate end longitudinally has two spherical through holes that are used to install lock screw, between two spherical through holes locking plate is installed, locking plate is connected with the titanium plate through bearing pin, and the titanium plate other end longitudinally has two and is respectively applied for the microscler chute that installs and fixes bolt and lock screw.
2. the preceding road of the thoracic vertebra titanium plate inner fixing device of going up according to claim 1, it is characterized in that: the ailhead slightly larger in diameter that places the lock screw in the microscler chute is in the short slotted eye of microscler chute.
3. the preceding road of the thoracic vertebra titanium plate inner fixing device of going up according to claim 1 and 2, it is characterized in that: the middle part of titanium plate has the bone screw chute that is used to install bone screw.
4. according to the described preceding road of the thoracic vertebra titanium plate inner fixing device of going up of claim 1, it is characterized in that: the thickness of titanium plate is 2.5mm, and length is 25-65mm, and width is 18mm; The length of lock screw is 16-22mm, and diameter is 4.0mm or 4.25mm; The length of set bolt is 16-22mm, and diameter is 5.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205455937U CN201847761U (en) | 2010-09-28 | 2010-09-28 | Fixing device in upper thoracic spine anterior titanium plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205455937U CN201847761U (en) | 2010-09-28 | 2010-09-28 | Fixing device in upper thoracic spine anterior titanium plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201847761U true CN201847761U (en) | 2011-06-01 |
Family
ID=44090180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205455937U Expired - Fee Related CN201847761U (en) | 2010-09-28 | 2010-09-28 | Fixing device in upper thoracic spine anterior titanium plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201847761U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103340682A (en) * | 2013-07-22 | 2013-10-09 | 胡亚兰 | Posterior cervical vertebra side block screw fixing guide device and screw fixing method |
| USD779065S1 (en) | 2014-10-08 | 2017-02-14 | Nuvasive, Inc. | Anterior cervical bone plate |
-
2010
- 2010-09-28 CN CN2010205455937U patent/CN201847761U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103340682A (en) * | 2013-07-22 | 2013-10-09 | 胡亚兰 | Posterior cervical vertebra side block screw fixing guide device and screw fixing method |
| USD779065S1 (en) | 2014-10-08 | 2017-02-14 | Nuvasive, Inc. | Anterior cervical bone plate |
| USD798455S1 (en) | 2014-10-08 | 2017-09-26 | Nuvasive, Inc. | Anterior cervical bone plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110601 Termination date: 20170928 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |