CN204318853U - A kind of joint of vertebral column is dashed forward special osteotome - Google Patents
A kind of joint of vertebral column is dashed forward special osteotome Download PDFInfo
- Publication number
- CN204318853U CN204318853U CN201420742600.0U CN201420742600U CN204318853U CN 204318853 U CN204318853 U CN 204318853U CN 201420742600 U CN201420742600 U CN 201420742600U CN 204318853 U CN204318853 U CN 204318853U
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- China
- Prior art keywords
- articular process
- joint
- cutting edge
- vertebral column
- cutter head
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Abstract
This utility model relates to a kind of joint of vertebral column and to dash forward special osteotome, comprises handle of a knife, and one end of handle of a knife connects cutter hub, and the other end is fixed with and knocks block; Cutter hub comprises blade and cutter head, and in the angle of 120 ° ~ 140 ° between blade and cutter head; The front end of cutter head offers V-type groove, and V-type groove both sides are one side cutting edge.Be posted by upper and lower articular process faying face lower end with V-shaped one side cutting edge during use, horizontal direction cuts articular process cartilage surface from bottom to top, and cutting edge slopes inwardly, and so just can prevent from wearing articular process by mistake, injure nerve root.Sufficient removal articular surface cartilage, remains articular process sclerotin again to greatest extent.Thus had an effect downwards by past conventional vertical and change horizontal applied force into, both meet and effectively cut articular process cartilage surface, have and can effectively evade the risk penetrating articular process injured nerve root.Reduce the risk of patient, improve cure rate, avoid causing secondary injury to patient.
Description
Technical field
This utility model belongs to medical apparatus and instruments articles for use field, is specifically related to a kind of joint of vertebral column and dashes forward special osteotome.
Background technology
In the middle of posterial spinal fusion operation, often need adopt bone graft fusion between articular process and vertebral plate, wherein, zygapophysial joint face cuts the precondition for carrying out bone-graft fusion, particularly case is merged for the long segment such as idiopathic scoliosis, degenerative scoliosis, because Fusion levels is long, self bone amount is limited.Both needed fully to remove articular surface cartilage, and needed again to retain articular process sclerotin as far as possible.Adopted traditional "-" font osteotome to operate in the past, when cutting, patient has an effect direction almost close to 90 ° downwards, and below articular process, be nerve root place, as having an effect, too small to cut articular cartilage face very few, is difficult to reach the effect in bone-graft fusion, has an effect excessive, may cause and penetrate articular process, damage below nerve root, causes serious consequence.Need conversion to hold cutter hands direction when cutting, and below direction articular process of having an effect, should not cut the degree of depth by accurate assurance, mistake is dark may injure dark facial root, there is certain risk in spinal surgical procedure.Cut and wasted self articular process sclerotin at most, affected bone-graft fusion effect.
Utility model content
The purpose of this utility model is to overcome the shortcoming existed in above-mentioned prior art, provides a kind of joint of vertebral column to dash forward special osteotome, has the advantage effectively can evading the risk penetrating articular process injured nerve root.
For achieving the above object, this utility model by the following technical solutions: comprise handle of a knife, one end of handle of a knife connects cutter hub, and the other end is fixed with and knocks block;
Described cutter hub comprises blade and cutter head, and in the angle of 120 ° ~ 140 ° between blade and cutter head; The front end of cutter head offers V-type groove, and V-type groove both sides are one side cutting edge.
Angle between described V-type groove both sides one side cutting edge is 25 ° ~ 45 °.
Angle between described V-type groove both sides one side cutting edge is 30 °.
The height of described one side cutting edge is 0.8 ~ 1.2cm.
Described handle of a knife is bakelite handle, and length is 25 ~ 35mm.
The length of described blade is 200 ~ 220mm.
The described cross section ovalize knocking block, major axis is 33 ~ 35mm.
The length of described cutter head is 13 ~ 17mm.
This utility model has following beneficial effect: prior art of comparing, and this utility model is due to the angle in 120 ° ~ 140 ° between blade and cutter head; And the front end of cutter head offers V-type groove, and V-type groove both sides are one side cutting edge.Be posted by upper and lower articular process faying face lower end with V-shaped one side cutting edge during use, horizontal direction cuts articular process cartilage surface from bottom to top, and cutting edge slopes inwardly, and so just can prevent from wearing articular process by mistake, injure nerve root.Sufficient removal articular surface cartilage, remains articular process sclerotin again to greatest extent.Thus had an effect downwards by past conventional vertical and change horizontal applied force into, both meet and effectively cut articular process cartilage surface, have and can effectively evade the risk penetrating articular process injured nerve root.Reduce the risk of patient, improve cure rate, avoid causing secondary injury to patient.This device is applicable to spread and extensive use.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation;
Fig. 2 is cutter head front cross-sectional view.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in further detail.
See Fig. 1 and 2, this utility model comprises handle of a knife 1, and one end of handle of a knife 1 connects cutter hub 2, and the other end is fixed with and knocks block 6; Cutter hub 2 comprises blade 3 and cutter head 4, and in the angle of 120 ° ~ 140 ° between blade 3 and cutter head 4; The front end of cutter head 4 offers V-type groove, and V-type groove both sides are one side cutting edge 5.Angle between V-type groove both sides one side cutting edge 5 is 25 ° ~ 45 °, and optimum is 30 °.The height of one side cutting edge 5 is 0.8 ~ 1.2cm.Handle of a knife 1 is bakelite handle, and length is 25 ~ 35mm.The length of blade 3 is 200 ~ 220mm.Knock the cross section ovalize of block 6, major axis is 33 ~ 35mm.The length of cutter head 4 is 13 ~ 17mm.
When spinal surgery needs to carry out bone-graft fusion between articular process, preparation bone grafting face, this device can be utilized, upper and lower articular process faying face lower end is posted by with V-shaped one side cutting edge 5, horizontal direction cuts articular process cartilage surface from bottom to top, because V-shaped one side cutting edge height 5 is 0.8 ~ 1.2cm, cutting edge slopes inwardly, and so just can prevent from wearing articular process by mistake, injure nerve root.Sufficient removal articular surface cartilage, remains articular process sclerotin again to greatest extent.
Thus had an effect downwards by past conventional vertical and change horizontal applied force into, both meet and effectively cut articular process cartilage surface, have and can effectively evade the risk penetrating articular process injured nerve root.Reduce the risk of patient, improve cure rate, avoid causing secondary injury to patient.This device is applicable to spread and extensive use.And this device uses simple, easy to operate.
Claims (8)
1. joint of vertebral column is dashed forward a special osteotome, it is characterized in that: comprise handle of a knife (1), and one end of handle of a knife (1) connects cutter hub (2), and the other end is fixed with and knocks block (6);
Described cutter hub (2) comprises blade (3) and cutter head (4), and in the angle of 120 ° ~ 140 ° between blade (3) and cutter head (4); The front end of cutter head (4) offers V-type groove, and V-type groove both sides are one side cutting edge (5).
2. a kind of joint of vertebral column according to claim 1 is dashed forward special osteotome, it is characterized in that: the angle between described V-type groove both sides one side cutting edge (5) is 25 ° ~ 45 °.
3. a kind of joint of vertebral column according to claim 2 is dashed forward special osteotome, it is characterized in that: the angle between described V-type groove both sides one side cutting edge (5) is 30 °.
4. a kind of joint of vertebral column according to claim 1 is dashed forward special osteotome, it is characterized in that: the height of described one side cutting edge (5) is 0.8 ~ 1.2cm.
5. a kind of joint of vertebral column according to claim 1 is dashed forward special osteotome, it is characterized in that: described handle of a knife (1) is bakelite handle, and length is 25 ~ 35mm.
6. a kind of joint of vertebral column according to claim 1 is dashed forward special osteotome, it is characterized in that: the length of described blade (3) is 200 ~ 220mm.
7. a kind of joint of vertebral column according to claim 1 is dashed forward special osteotome, it is characterized in that: the described cross section ovalize knocking block (6), major axis is 33 ~ 35mm.
8. a kind of joint of vertebral column according to claim 1 is dashed forward special osteotome, it is characterized in that: the length of described cutter head (4) is 13 ~ 17mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420742600.0U CN204318853U (en) | 2014-11-28 | 2014-11-28 | A kind of joint of vertebral column is dashed forward special osteotome |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420742600.0U CN204318853U (en) | 2014-11-28 | 2014-11-28 | A kind of joint of vertebral column is dashed forward special osteotome |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204318853U true CN204318853U (en) | 2015-05-13 |
Family
ID=53155266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420742600.0U Expired - Fee Related CN204318853U (en) | 2014-11-28 | 2014-11-28 | A kind of joint of vertebral column is dashed forward special osteotome |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204318853U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106691546A (en) * | 2017-01-11 | 2017-05-24 | 刘波 | Costal cartilage joint cutting peeler |
-
2014
- 2014-11-28 CN CN201420742600.0U patent/CN204318853U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106691546A (en) * | 2017-01-11 | 2017-05-24 | 刘波 | Costal cartilage joint cutting peeler |
| CN106691546B (en) * | 2017-01-11 | 2020-08-07 | 刘波 | Dissector for cutting costal cartilage junction |
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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: 20150513 Termination date: 20171128 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |