CN2730337Y - Intervertebral fixation device - Google Patents
Intervertebral fixation device Download PDFInfo
- Publication number
- CN2730337Y CN2730337Y CNU2004201048052U CN200420104805U CN2730337Y CN 2730337 Y CN2730337 Y CN 2730337Y CN U2004201048052 U CNU2004201048052 U CN U2004201048052U CN 200420104805 U CN200420104805 U CN 200420104805U CN 2730337 Y CN2730337 Y CN 2730337Y
- Authority
- CN
- China
- Prior art keywords
- fixation device
- intervertebral
- hole
- intervertebral fixation
- bullet
- 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 - Fee Related
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
Abstract
The utility model relates to an intervertebral fixing device which is used for implanting an intervertebral disk of a human body vertebra. The intervertebral fixing device is a cone-shaped body containing a hollow cavity inside; each of the upper, the lower, the left and the right walls of the hollow cavity is provided with a through hole; a supporting column is arranged in the middle of the through hole of each of the left and the right walls. The upper and the lower ends of the cone-shaped body are in a tooth-shaped fixed structure; a tooth peak of the fixed structure forms a triangular tip shape; the tooth valley of the fixed structure forms a circular arc shape. Each of the front and the back walls of the cone-shaped body is provided with a screw hole; each of the front and the back outer walls of the cone-shaped body is provided with a sliver-shaped groove.
Description
Technical field
This utility model relates to a kind of intervertebral fixation device, and particularly relevant for being applied to the common intervertebral fixation device of spinal surgery.
Background technology
Bullet and intervertebral disc disorder and damage are the common cases of operation on vertebra, and pressuring nerve causes long-term pain (as: chronic low back pain) owing to intervertebral disc deformations, moisture content loss or disc degeneration.At bullet and intervertebral disc case, operation on vertebra still rests on the stage that bone merges (Arthrodesis) at present, and internal fixation and the later stage effective fusion (Fusion) that the initial stage is firm depended in successful operation.The intervertebral fixation device is the device that is applied to the common intervertebral fusion device of spinal surgery.
The profile of intervertebral fixation device and member, be to cooperate human vertebra intervertebral disc (Spinal Disc) structure and design, the position of its implantation is the position of vertebra intervertebral disc, so be called vertebra intervertebral fixation device (Spinal Cage), because the human vertebra rear side has spinal nerves and other nerve, the surgical operation difficulty is higher, in order to improve the being perfectly safe property of operation, consider that simultaneously the doctor is when operation, the shortening operation time dwindles with simplification operating procedure, the size of device design as far as possible, to avoid injuring vertebra organ on every side, and, make the still enough intensity of tool of fixture with design optimization.
The mode of existing intervertebral fixation device design is had nothing in common with each other, but it is lower or shortcoming such as can only unidirectionally implant mostly to bear load.Therefore, a kind of intervertebral fixation device that can bear high capacity and two-way implantation, real is the essential condition of successful operation on vertebra.
Summary of the invention
The purpose of this utility model provides a kind of intervertebral fixation device, in order to the intervertebral disc of implant into body vertebra, and the postoperative vertebra of fixing surgical.
According to above-mentioned purpose of the present utility model, a kind of intervertebral fixation device is proposed, be used for the intervertebral disc of implant into body vertebra, this intervertebral fixation device is that a bullet includes hollow chamber, the upper and lower, left and right wall of hollow chamber respectively has a through hole, and respectively has a pillar in the middle of in the through hole of left and right wall; The upper and lower side of bullet is the thread form fixed structure, and the tooth peak of this fixed structure is that triangle is pointed, and tooth paddy is circular arc; The front and back walls of bullet respectively has screw hole, and respectively has a strip groove on the forward and backward outer wall.
From the above, application the utlity model has following advantage:
One, the tooth form fixed structure of upper and lower, the tooth peak is that triangle is pointed, tool fixed effect behind the implantation toper body; Tooth paddy is circular arc, can reduce the stress concentration phenomenon, improves service life.
Two, have pillar in the middle of in the through hole of left and right wall, improve intensity.Bridge pier quantity as bridge is directly proportional with bridge structure, especially the stressed maximum in this product middle part.
Three, this intervertebral fixation device all has groove and screw because of front and back ends, can implant or remove in the side before or after human body.
Description of drawings
For above-mentioned and other purpose, feature and advantage of the present utility model can be become apparent, a preferred embodiment cited below particularly, and cooperate appended graphicly, be described in detail below:
Fig. 1 is the axonometric chart of the intervertebral fixation device of this utility model one preferred embodiment; And
Fig. 2 A, 2B, 2C are respectively vertical view, right view, the front views of the intervertebral fixation device of this utility model one preferred embodiment.
Each assembly conventional letter and being simply described as follows:
12: the through hole of going up lower wall;
14: the through hole of front and rear wall;
15: the tooth peak of tooth form fixed structure;
16: through hole 14 intermediary pillars;
17: the tooth paddy of tooth form fixed structure;
18: the tooth form fixed structure;
19: groove;
20: screw hole.
The specific embodiment
Intervertebral fixation device mode of operation of the present utility model is the retrograde affection that human vertebra is subjected to wound, deformity or lumbar vertebra, after surgical treatment, implant this device with fixing unsettled vertebra, whole piece or partial vertebra are reached recover original profile and angle, make firmly, not loosening, and then make whole holder and bullet form one, reach fixed effect fully.This device belongs to hollow structure, after the implantation, also can insert the benefit bone material, promotes bone growth, and (Bone Graft) success rate of mending bone is improved greatly.
Please refer to Fig. 1, it illustrates the axonometric chart according to a kind of intervertebral fixation device of this utility model one preferred embodiment.Intervertebral fixation device of the present utility model is to utilize a bullet Design and Machining to become desired shape, and the main design focal point of product is as follows:
1. this utility model upper and lower is the tooth form fixed structure, tool fixed effect behind the implantation toper body.The tooth peak 15 of this tooth form fixed structure is that triangle is pointed, can effectively bite vertebra up and down.Tooth paddy 17 is circular arc, or does the processing of lead angle, can reduce the stress concentration phenomenon and prevent the generation of fatigue rupture.
2. the hollow structure 12 of bullet can be inserted the benefit bone material, and the upper and lower, left and right sidewall of hollow structure respectively has a through hole, and respectively has a pillar 16 in the middle of in the through hole 14 of left and right sidewall, to improve the intensity of whole bullet.
3. this device is through the mechanical analysis design optimization, overall dimensions with highly not only reduce and enough intensity and the tired patience of tool.
4. this device all has groove 19 and screw 20 because of front and back ends, can implant or remove in the side before or after human body.
Please refer to Fig. 2 A, 2B, 2C, it illustrates vertical view, right view, front view according to a kind of intervertebral fixation device of this utility model one preferred embodiment respectively.Through hole 12 in the drawings and through hole 14, based on the consideration on the mechanics, the inner edge of through hole all can be designed to circular arc type or do lead angle and handle, to reduce the stress concentration phenomenon and to prevent the generation of fatigue rupture.Pillar 16 is positioned at the centre of left and right sidewall through hole, strengthens the place of whole bullet structure most fragile.Emphasize the tooth form fixed structure 18 of intervertebral fixation device upper and lower once more, tooth peak 15 is that triangle is pointed, can effectively bite up and down vertebra, and tooth paddy 17 is circular arc, or does the processing of lead angle, can reduce the stress concentration phenomenon and prevent the generation of fatigue rupture.The rear and front end of intervertebral fixation device has screw hole 20 and groove 19 respectively, and screw hole 20 is used for the implanting instrument that locks, and 19 of grooves and implanting instrument engaging prevent when implant surgery, the displacement that rotates of implanting instrument and intervertebral fixation device.
By above-mentioned this utility model preferred embodiment as can be known, application the utlity model has following advantage:
One, the tooth form fixed structure of upper and lower, the tooth peak is that triangle is pointed, tool fixed effect behind the implantation toper body; Tooth paddy is circular arc, can reduce the stress concentration phenomenon, improves service life.
Two, have pillar in the middle of in the through hole of left and right wall, improve intensity.Bridge pier quantity as bridge is directly proportional with bridge structure, especially the stressed maximum in this product middle part.
Three, this intervertebral fixation device all has groove and screw because of front and back ends, can implant or remove in the side before or after human body.
As known by the technical knowledge, this utility model can be realized by other the embodiment that does not break away from its spirit or essential feature.Therefore, above-mentioned disclosed embodiment with regard to each side, all just illustrates, and is not only.All in this utility model scope or the change that is being equal in the scope of the present utility model all be included in the utility model.
Claims (3)
1, a kind of intervertebral fixation device is used for the intervertebral disc of implant into body vertebra, and it is characterized in that: this intervertebral fixation device comprises at least:
One bullet which is provided with a hollow chamber, and the upper and lower, left and right wall of this hollow chamber respectively has a through hole, and respectively has a pillar in the middle of this through hole of left and right wall;
Two thread form fixed structures lay respectively at the upper and lower side tabular surface of this bullet, and the tooth peak of this fixed structure is that triangle is pointed, and tooth paddy is circular arc; And
Screw hole lays respectively at this hollow chamber's front and back walls, and on the forward and backward outer wall of this hollow chamber, respectively has a strip groove, and wherein above-mentioned different shape and feature all are formed on this bullet, makes this bullet become a kind of intervertebral fixation device.
2, intervertebral fixation device according to claim 1 is characterized in that, the inner edge of this through hole is for circular arc type or does lead angle and handle.
3, intervertebral fixation device according to claim 1 is characterized in that, this screw hole only is located at the preceding outer wall or the back outer wall of this hollow chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004201048052U CN2730337Y (en) | 2004-09-17 | 2004-09-17 | Intervertebral fixation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004201048052U CN2730337Y (en) | 2004-09-17 | 2004-09-17 | Intervertebral fixation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2730337Y true CN2730337Y (en) | 2005-10-05 |
Family
ID=35050682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2004201048052U Expired - Fee Related CN2730337Y (en) | 2004-09-17 | 2004-09-17 | Intervertebral fixation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2730337Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102028532A (en) * | 2010-12-29 | 2011-04-27 | 四川国纳科技有限公司 | Nanocomposite intervertebral fusion cage and preparation method thereof |
| CN110114036A (en) * | 2016-10-25 | 2019-08-09 | 肌肉骨骼科学教育研究所有限公司 | Spinal fusion implant |
| US11246716B2 (en) | 2016-10-18 | 2022-02-15 | Institute for Musculoskeletal Science and Education, Ltd. | Implant with deployable blades |
| US11872143B2 (en) | 2016-10-25 | 2024-01-16 | Camber Spine Technologies, LLC | Spinal fusion implant |
-
2004
- 2004-09-17 CN CNU2004201048052U patent/CN2730337Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102028532A (en) * | 2010-12-29 | 2011-04-27 | 四川国纳科技有限公司 | Nanocomposite intervertebral fusion cage and preparation method thereof |
| CN102028532B (en) * | 2010-12-29 | 2013-04-03 | 四川国纳科技有限公司 | Nanocomposite intervertebral fusion cage and preparation method thereof |
| US11246716B2 (en) | 2016-10-18 | 2022-02-15 | Institute for Musculoskeletal Science and Education, Ltd. | Implant with deployable blades |
| CN110114036A (en) * | 2016-10-25 | 2019-08-09 | 肌肉骨骼科学教育研究所有限公司 | Spinal fusion implant |
| US11413157B2 (en) | 2016-10-25 | 2022-08-16 | Institute for Musculoskeletal Science and Education, Ltd. | Spinal fusion implant |
| US11872143B2 (en) | 2016-10-25 | 2024-01-16 | Camber Spine Technologies, LLC | Spinal fusion implant |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051005 Termination date: 20100917 |