CN203693842U - High cervical vertebra interbody fusion cage - Google Patents
High cervical vertebra interbody fusion cage Download PDFInfo
- Publication number
- CN203693842U CN203693842U CN201420026080.3U CN201420026080U CN203693842U CN 203693842 U CN203693842 U CN 203693842U CN 201420026080 U CN201420026080 U CN 201420026080U CN 203693842 U CN203693842 U CN 203693842U
- Authority
- CN
- China
- Prior art keywords
- screw hole
- fusion cage
- supportive body
- upper screw
- supporting body
- 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
-
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Neurology (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The utility model discloses a high cervical vertebra interbody fusion cage. The high cervical vertebra interbody fusion cage comprises a supporting body and a fastening screw. The front end of the supporting body extends forwards to form a sharp end, wherein the cross section of the sharp end becomes smaller gradually, and the surface of the sharp end is smooth. The back end of the supporting body is provided with a pressing plate extending downwards. The back end face of the supporting body is provided with an upper screw hole inclining upwards. The pressing plate is provided with a lower screw hole. The fastening screw comprises an upper screw penetrating through the upper screw hole and extending out of the upper end face of the supporting body and a lower screw penetrating through the lower screw hole and extending to the position below the supporting body. When the high cervical vertebra interbody fusion cage is used, the supporting body is punched into the intervertebral space, drilling is carried out in the set direction of the upper screw hole, and after depth is measured, the upper screw is screwed into the upper screw hole; the part of the lower screw hole is drilled, and the lower screw is screwed into the drilled part. According to the high cervical vertebra interbody fusion cage, the upper screw is arranged obliquely upwards, shielding of the lower jawbone before the high cervical vertebra when the upper screw is screwed into the upper screw hole is avoided, and therefore the operation can be carried out conveniently, and the quickness and safety of the operation are greatly improved.
Description
Technical field
This utility model, for medical instruments field, particularly relates to a kind of high-order cervical fusion cage.
Background technology
Anterior cervical decompression operation usually needs row cervical intervertebral disk to extract and intervertebral bone graft merges and steel plate is fixed.Traditional modus operandi is to get block ilium, implants pathological interspinal gap after being trimmed to suitable size, then fixes with steel plate.Because this modus operandi need to separately be got otch in patient's ilium portion, increased operation wound, and it is more to get the complication of bony site.So this modus operandi is replaced by Invasive lumbar fusion device gradually.So-called Invasive lumbar fusion device is a hollow rectangular structure of making of titanium alloy or other macromolecular materials.Broken bone, allograph bone or the artificial bone etc. that in operation, take off can be filled in its hollow part.Invasive lumbar fusion device can substitute the effect of iliac, supports and maintain disc height, and the function of performance induction bone fusion.For clinical product, comprise single Invasive lumbar fusion device product at present, also have the integrated device of fusion device and steel plate, can provide selection for operative doctor.
For low level cervical operation, Invasive lumbar fusion device adds the fixing mode of steel plate and uses more convenient.But when the high-order cervical vertebra for neck more than 3 is implemented operation, because patient's mandibular bone position is lower, stop the nail of putting of top screw through meeting, to such an extent as to cannot be to the even normal screw of placing of cervical vertebra 3 of neck 2.
Utility model content
For addressing the above problem, this utility model provides one effectively to avoid mandibular bone to plant nail to high-order cervical vertebra and blocks, and facilitates the high-order cervical fusion cage of operation technique.
This utility model solves the technical scheme that its technical problem adopts: a kind of high-order cervical fusion cage, comprise supportive body and trip bolt, the front end of supportive body extends forward and Formation cross-section shrinks gradually, ganoid tip, the rear end of supportive body is provided with the pressing plate leaning out downwards, the rear end face of supportive body is provided with the upper screw hole of oblique top, pressing plate is provided with the next screw hole, trip bolt comprises through described upper screw hole the upper screw that leant out by supportive body upper surface, and pass the next screw hole and visit to the next screw of supportive body below.
Be further used as the improvement of technical solutions of the utility model, the angle of upper screw and supportive body upper surface is 30 °～40 °.
Be further used as the improvement of technical solutions of the utility model, the rear end face of pressing plate is provided with in the outer of the next screw hole can be visited to the next screw hole port and compress the rotation briquetting of the next screw.
Be further used as the improvement of technical solutions of the utility model, be provided with bone window through upper and lower end face and/or the left and right side of supportive body.
Be further used as the improvement of technical solutions of the utility model, upper screw hole and the next screw hole include two that are arranged side by side.
Be further used as the improvement of technical solutions of the utility model, the upper and lower end face of supportive body is equipped with dentation.
The beneficial effects of the utility model: in this high-order cervical fusion cage, at the rear end face of supportive body, the upper screw hole above oblique is set, when use, supportive body is squeezed into intervertebral space, the direction boring of setting along upper screw, after fathoming, is screwed into upper screw; Then in the boring of the position of the next screw hole, after fathoming, be screwed into the next screw.In this utility model, because upper screw adopts being obliquely installed obliquely, while having avoided upper screw to insert, be positioned at blocking of high-order cervical vertebra mandibular bone, when facilitating operation technique, greatly improved agility and the safety of operation.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Fig. 1 is this utility model example structure axonometric drawing;
Fig. 2 is this utility model example structure front view;
Fig. 3 is that this utility model embodiment squeezes into intervertebral space structural representation.
The specific embodiment
With reference to Fig. 1, Fig. 2, this utility model provides a kind of high-order cervical fusion cage, comprise supportive body 1 and trip bolt, upper and lower end face and/or left and right side through supportive body 1 are provided with bone window 10, the upper and lower end face of supportive body 1 is equipped with dentation 11, to prevent that supportive body 1 from exiting.The front end of supportive body 1 extends forward and Formation cross-section shrinks gradually, ganoid most advanced and sophisticated 12, the rear end of supportive body 1 is provided with the pressing plate 13 leaning out downwards, pressing plate 13 and supportive body 1 adopt integrated design, have simplified operation technique.The rear end face of supportive body 1 is provided with two upper screw holes of oblique top, pressing plate 13 is provided with two the next screw holes, trip bolt comprises the upper screw 21 leaning out through upper screw hole and by supportive body 1 upper surface, and through the next screw hole visiting to the next screw 22 of supportive body 1 below, the rear end face of pressing plate 13 is provided with in the outer of the next screw hole can be visited to the next screw hole port and compress the rotation briquetting 14 of the next screw 22.
As shown in Figure 3, in this high-order cervical fusion cage, at the rear end face of supportive body 1, the upper screw hole above oblique is set, when use, selects the supportive body 1 of suitable dimension, allograph bone or artificial bone or autologous bone are inserted to bone window 10 compactings.Again supportive body 1 is squeezed into intervertebral space, until pressing plate 13 fits tightly with the next vertebral body, the direction boring of setting along upper screw, after fathoming, is screwed into upper screw 21; Then in the boring of the position of the next screw hole, after fathoming, be screwed into the next screw 22.Finally turn rotation briquetting 14, by stuck the next screw 22, locking, complete operation.In this utility model, because upper screw 21 adopts being obliquely installed obliquely, while having avoided upper screw 21 to insert, be positioned at blocking of high-order cervical vertebra mandibular bone 3, when facilitating operation technique, greatly improved agility and the safety of operation.Certainly, this high-order cervical fusion cage not only can be used for high-order cervical operation, also can be used for low level cervical operation, and indication is wide.
As this utility model preferred embodiment, upper screw 21 is 30 °～40 ° with the angle of supportive body 1 upper surface, and supportive body 1 adopts the implantable material of titanium alloy or PEEK or other to make.
Certainly, the invention is not limited to above-mentioned embodiment, those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite without prejudice to this utility model spirit, and the modification that these are equal to or replacement are all included in the application's claim limited range.
Claims (6)
1. a high-order cervical fusion cage, it is characterized in that: comprise supportive body and trip bolt, the front end of described supportive body extends forward and Formation cross-section shrinks gradually, ganoid tip, the rear end of described supportive body is provided with the pressing plate leaning out downwards, the rear end face of described supportive body is provided with the upper screw hole of oblique top, described pressing plate is provided with the next screw hole, described trip bolt comprises through described upper screw hole the upper screw that leant out by supportive body upper surface, and pass described the next screw hole and visit to the next screw of supportive body below.
2. high-order cervical fusion cage according to claim 1, is characterized in that: the angle of described upper screw and supportive body upper surface is 30 °～40 °.
3. high-order cervical fusion cage according to claim 1 and 2, is characterized in that: the rear end face of described pressing plate is provided with in the outer of the next screw hole can be visited to the next screw hole port and compress the rotation briquetting of described the next screw.
4. high-order cervical fusion cage according to claim 1 and 2, is characterized in that: upper and lower end face and/or left and right side through described supportive body are provided with bone window.
5. high-order cervical fusion cage according to claim 1 and 2, is characterized in that: described upper screw hole and the next screw hole include two that are arranged side by side.
6. high-order cervical fusion cage according to claim 1 and 2, is characterized in that: the upper and lower end face of described supportive body is equipped with dentation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420026080.3U CN203693842U (en) | 2014-01-15 | 2014-01-15 | High cervical vertebra interbody fusion cage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420026080.3U CN203693842U (en) | 2014-01-15 | 2014-01-15 | High cervical vertebra interbody fusion cage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203693842U true CN203693842U (en) | 2014-07-09 |
Family
ID=51044355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420026080.3U Expired - Fee Related CN203693842U (en) | 2014-01-15 | 2014-01-15 | High cervical vertebra interbody fusion cage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203693842U (en) |
-
2014
- 2014-01-15 CN CN201420026080.3U patent/CN203693842U/en not_active Expired - Fee Related
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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: 20140709 Termination date: 20180115 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |