CN203790020U - Locking device with long-tail U-shaped vertebral pedicle - Google Patents
Locking device with long-tail U-shaped vertebral pedicle Download PDFInfo
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- CN203790020U CN203790020U CN201420188051.7U CN201420188051U CN203790020U CN 203790020 U CN203790020 U CN 203790020U CN 201420188051 U CN201420188051 U CN 201420188051U CN 203790020 U CN203790020 U CN 203790020U
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- shaped
- grooves
- tail
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- 230000000694 effects Effects 0.000 abstract description 2
- 238000009826 distribution Methods 0.000 abstract 1
- 238000009966 trimming Methods 0.000 abstract 1
- 206010017076 Fracture Diseases 0.000 description 14
- 210000000988 bone and bone Anatomy 0.000 description 5
- 230000035807 sensation Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 230000002980 postoperative effect Effects 0.000 description 2
- 208000020339 Spinal injury Diseases 0.000 description 1
- 208000031294 Upper limb fractures Diseases 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
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Abstract
The utility model discloses a locking device with a long-tail U-shaped vertebral pedicle. The locking device is characterized in that a connecting rod hole is formed in the two sides of the outer wall of each U-shaped groove respectively, internal threads which are the same as nuts are formed on the inner walls of the U-shaped grooves, spiral breaking grooves with the same directions and axial lines as the internal threads are formed in the two sides of the outer walls of the U-shaped grooves, the U-shaped grooves are divided into sections by the spiral breaking grooves, and the spiral breaking grooves formed in the two sides of the same section are the same in the heights of starting points and terminal points. According to the utility model, the direction distributions of the spiral breaking grooves are the same as the internal threads and the spiral breaking grooves and the internal threads are coaxial, so that the stress concentrating positions during breakage, namely, the fracture surface thickness of breaking positions, are uniform and consistent when the spiral breaking grooves are broken off, the fracture surfaces can be guaranteed to be tidy after breaking operation without foreign matters such as threads trimming, therefore, the locking safety can be increased; two sections of breaking grooves are the same in the heights of the starting point positions and the terminal point positions, so that the height variations of the two sections of U-shaped grooves are not obvious, and that incisura is increased can't be felt obviously; the locking device has the advantages of simplicity for operation, safety for utilization, reliability for connecting, good treatment effect and the like.
Description
Technical field
The present invention relates to spinal injury or lopsided technology, specifically a kind of for internal fixation of spine be U-shaped, with lock nut be the U-shaped pedicle of vertebral arch locking device of band long-tail of thread lock mode.
Background technology
As everyone knows, at spinal operation, implants being placed into reason in vertebra has manyly, comprising: (a) correct the gryposis of spinal column; (b) maintain suitable vertebra gap, and provide support for fracture or the vertebra of other damage; (c) in spinal column, carry out other treatment.Typical spinal internal fixation system is used pedicle screw, bar, nut as supporting and retaining element.In such system, a series of two or more bone securing member is implanted in two or more vertebras by corresponding devices work operation, then bar or other fixture are placed in the head of bone securing member, or be attached to the head of bone securing member, or be placed in the connector that connects described bar and described bone fastener head.Then the connection being fixed up between these a plurality of parts, needs specific retaining element redundance to remove after fixedly completing, thus in spinal column with the fixing support member of a plurality of degree.Current, the U-shaped pedicle screw of long-tail in the U-shaped pedicle of vertebral arch locking device of long-tail, the long-tail of the U-shaped pedicle of vertebral arch Universal screw nail of long-tail and the U-shaped pedicle of vertebral arch hook of long-tail etc. fractures to design to be along U-shaped arm outside increases by a horizontal snap slot, because having screw thread, endoporus distributes, this will certainly cause the nail arm variable thickness of snap slot position to cause, and snap slot has been determined stress concentration point when long-tail nail arm fractures conventionally, effort not only fractures, in the time of also can making to fracture, section inequality causes screw thread overlap, screw thread overlap has increased the postoperative stimulation to patient, also having some designs is to the U-shaped pedicle screw of short-tail by instrument, the U-shaped pedicle of vertebral arch Universal screw nail of long-tail and the U-shaped pedicle of vertebral arch hook of long-tail etc. operate, to realize the function of the U-shaped pedicle of vertebral arch of long-tail, its deficiency is inconvenient operation, therapeutic effect is poor.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of simple to operate, use safety, by retaining element, bone securing member and Connection Element solid and reliable linking together in spinal column, long-tail U groove section and incisura answer minimum degree ground Give brought by user to stimulate and the U-shaped pedicle of vertebral arch locking device of long-tail of foreign body sensation.
The present invention can be achieved by the following scheme.
The U-shaped pedicle of vertebral arch locking device of a kind of long-tail, comprise the ailhead being formed by nut and the U-shaped groove of at least two joints, nut is connected as a single entity with the U-shaped groove of first joint, it is characterized in that the U-shaped groove outer wall of every joint both sides are respectively equipped with pitman hole, U-shaped groove inwall is provided with the female thread identical with nut, U-shaped groove outer wall both sides are respectively equipped with spiral snap slot equidirectional with female thread, coaxial line, and spiral snap slot is by U-shaped groove merogenesis, identical with terminal height with the starting point of joint both sides spiral snap slot.
The disconnected cross section of spiral snap slot of the present invention is V-type, and pattern is simply effective, is easy to processing and fractures.
The present invention has guaranteed the safe and reliable of fixing system, easy and simple to handle, spiral snap slot direction distributes identical with inner hole thread and coaxial, the section thickness of stress concentration position broken positions when this makes to fracture is uniformity, fracture operation after can guarantee that section is neat, without foreign bodies such as screw thread overlaps, and increased the safety of locking result, in addition, the starting point of two sections of snap slots is identical with final position height, make the height change of two sections of U-shaped arms not obvious, also can not be significantly increased the sensation of incisura, this snap slot cross section pattern is V-type, pattern is simply effective, be easy to fractureing of processing.
Accompanying drawing explanation
A kind of structural representation of Fig. 1 is that the present invention is applied to universal (multiaxis) pedicle screw.
Fig. 2 is a kind of schematic diagram that the present invention is applied to the U-shaped nail of retaining element long-tail (multiaxis).
Fig. 3 is the schematic diagram that the present invention is applied to the U-shaped groove U-shaped nail of 8 long-tail (single shaft).
Fig. 4, Fig. 5, Fig. 6 are the schematic diagrams of three different directions of the general U-shaped groove U-shaped nail of 8 long-tail of the present invention (single shaft).
Fig. 4 is front view.
Fig. 5 is left view.
Fig. 6 is right view.
Fig. 7, Fig. 8, Fig. 9 are the design sketchs after the U-shaped nail of general U-shaped flute length tail (single shaft) long-tail partly fractures.
The front view that Fig. 7 is.
Fig. 8 is left view.
Fig. 9 is right view.
The specific embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
The U-shaped pedicle of vertebral arch locking device of a kind of long-tail, comprise the ailhead being formed by nut and the U-shaped groove of at least two joints, nut is connected as a single entity with the U-shaped groove of first joint, the structure of above-mentioned each ingredient and the interconnected relationship between them are same as the prior art, this does not repeat, the invention is characterized in that U-shaped groove is that opposite ends in a cylindrical body is respectively equipped with U-shaped groove, U-shaped groove inwall is provided with the female thread identical with nut technical parameter, U-shaped groove outer wall both sides are respectively equipped with female thread equidirectional, the snap slot that is spiral dress of coaxial line, spiral snap slot carries out merogenesis by a long U-shaped groove, the U-shaped groove outer wall of every joint both sides are respectively equipped with pitman hole, to be connected with rod, the starting point of described same joint both sides spiral snap slot is identical with terminal height, make the height change of two sections of U-shaped arms not obvious, also can not be significantly increased the sensation of incisura, in addition, the disconnected cross section of spiral snap slot of the present invention is V-type, pattern is simply effective, be easy to processing and fracture.
asfig. 1 is the design sketch after universal (multiaxis) pedicle screw in general restoring backbone internal fixation system, rod and nut locking, and this is according to an aspect of the present invention.Self threading pin 2 screws in along the inner hole thread passage of ailhead 1 head, and rod 3 and self threading pin 1 are locked the most at last.The a series of similar element that is locked has formed spinal fixation system.
Fig. 2 is the U-shaped nail of general retaining element long-tail (multiaxis), generally parts such as 4 ailheads (nail seat) and 6 self threading pins, consists of.Self threading pin, ailhead and rod complete after locking, long-tail part need be fractureed along snap slot 7.From figure, easily find out, snap slot 7 is the hand of spiral, and identical with screw thread 5 directions in ailhead 4 holes.This is according to an aspect of the present invention.
Fig. 3 is the general U-shaped groove U-shaped nail of 8 long-tail (single shaft), and locking mode is identical with self threading pin, and its long-tail part 9 need to fracture at the tailing edge snap slot 7 that has been locked equally.This is according to an aspect of the present invention.
Fig. 4, Fig. 5, Fig. 6 are the views of three different directions of the general U-shaped groove U-shaped nail of 8 long-tail (single shaft), from figure, obviously can see, on two U-shaped arms of U-shaped nail, all have the spiral snap slot after optimal design.The height dimension of the starting point of snap slot on two U-shaped arms (10He position, position 13) and terminal (11He position, position 12) is all identical.This is according to an aspect of the present invention.
Fig. 7, Fig. 8, Fig. 9 are the effects 14 after the general U-shaped groove U-shaped nail of 8 long-tail (single shaft) long-tail part 9 fractures, and can form a neat end face 15 in the position of snap slot.This is according to an aspect of the present invention.
Be illustrated as the view of three directions after the general U-shaped groove U-shaped nail of 8 long-tail (single shaft) long-tail part 9 fractures.Because the starting point (10He position, position 13) of snap slot on two U-shaped arms is all identical with the height dimension of terminal (11He position, position 12), so can not cause obvious incisura to increase after fractureing, and both ends of the surface are neat section 15, farthest guaranteed that safe and reliable and postoperative reduction of apparatus stimulates patient.
The present invention has guaranteed the safe and reliable of fixing system, easy and simple to handle, spiral snap slot direction distributes identical with inner hole thread and coaxial, the section thickness of stress concentration position broken positions when this makes to fracture is uniformity, fracture operation after can guarantee that section is neat, without foreign bodies such as screw thread overlaps, and increased the safety of locking result, in addition, the starting point of two sections of snap slots is identical with final position height, make the height change of two sections of U-shaped arms not obvious, also can not be significantly increased the sensation of incisura, this snap slot cross section pattern is V-type, pattern is simply effective, be easy to fractureing of processing.
Although explain and described preferred embodiment herein, but the those of ordinary skill of correlative technology field will be understood apparently, can make various modifications, interpolation and replacement, only otherwise deviate from its essence, so these are considered within the scope of the following claims.
Claims (2)
1. the U-shaped pedicle of vertebral arch locking device of long-tail, comprise the ailhead being formed by nut and the U-shaped groove of at least two joints, nut is connected as a single entity with the U-shaped groove of first joint, it is characterized in that the U-shaped groove outer wall of every joint both sides are respectively equipped with pitman hole, U-shaped groove inwall is provided with the female thread identical with nut, U-shaped groove outer wall both sides are respectively equipped with spiral snap slot equidirectional with female thread, coaxial line, and spiral snap slot is by U-shaped groove merogenesis, identical with terminal height with the starting point of joint both sides spiral snap slot.
2. the U-shaped pedicle of vertebral arch locking device of a kind of long-tail according to claim 1, the disconnected cross section that it is characterized in that spiral snap slot is V-type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420188051.7U CN203790020U (en) | 2014-04-18 | 2014-04-18 | Locking device with long-tail U-shaped vertebral pedicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420188051.7U CN203790020U (en) | 2014-04-18 | 2014-04-18 | Locking device with long-tail U-shaped vertebral pedicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203790020U true CN203790020U (en) | 2014-08-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420188051.7U Expired - Lifetime CN203790020U (en) | 2014-04-18 | 2014-04-18 | Locking device with long-tail U-shaped vertebral pedicle |
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| Country | Link |
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| CN (1) | CN203790020U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103919603A (en) * | 2014-04-18 | 2014-07-16 | 北京市奥斯比利克新技术开发有限公司 | Long-tail U-type vertebral pedicle locking device |
-
2014
- 2014-04-18 CN CN201420188051.7U patent/CN203790020U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103919603A (en) * | 2014-04-18 | 2014-07-16 | 北京市奥斯比利克新技术开发有限公司 | Long-tail U-type vertebral pedicle locking device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 100000, No. 11, Poplar Road, 1 good villages, Fangshan District, Beijing Patentee after: BONOVO ORTHOPEDICS, Inc. Address before: 100069 Beijing Haidian District Zizhuyuan Road No. 31, room 1618, China and Macao Center Jiahui yuan Patentee before: Beijing Orthopedic Innovation Inc. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140827 |