CN204581602U - Fusion device and supporting cutter thereof between a kind of screw-in Cervical zygapophyseal joint - Google Patents
Fusion device and supporting cutter thereof between a kind of screw-in Cervical zygapophyseal joint Download PDFInfo
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- CN204581602U CN204581602U CN201520038854.9U CN201520038854U CN204581602U CN 204581602 U CN204581602 U CN 204581602U CN 201520038854 U CN201520038854 U CN 201520038854U CN 204581602 U CN204581602 U CN 204581602U
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- fusion device
- screw
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- rhombus
- bone
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Abstract
This utility model belongs to the bone surgery spinal surgery technical field of medical instruments of clinical medicine, be specifically related to fusion device between a kind of screw-in Cervical zygapophyseal joint for posterior cervical laminectomy for decompression fusion, it is characterized in that: this fusion device outward appearance is screw-like, there is screw thread, central authorities are rhombus hollow-core construction, and rhombus is hollow is successively decreased to front end Zhou Jing by tail end.Screw thread is shallow, and pitch is wide.Entire body is tantalum metal material, and there is microcellular structure on surface.Need screw in supporting cutter during implantation, cutter is by rhombohedral insert, and oval knife bar and handle form.Rhombohedral insert has certain taper, exact matching hollow with fusion device rhombus.By enforcement of the present utility model, simplify operative procedure, hemorrhage more, the shortcoming such as bone grafting is shifted, do not merge when avoiding rear outside bone grafting, and because fusion device is tantalum metal material, good with the human-body biological compatibility, the microcellular structure similar with human body spongy bone itself had, is beneficial to Bone Ingrowth, thus promotes that zygapophysial joints merges.
Description
Technical field
This utility model belongs to the bone surgery spinal surgery technical field of medical instruments of clinical medicine, is specifically related to fusion device between a kind of screw-in Cervical zygapophyseal joint for posterior cervical laminectomy for decompression fusion.
Background technology
Stenosis is common clinical, frequently-occurring disease, and wherein serious symptom person usually needs operative treatment.Posterior cervical laminectomy and decompression is conventional operation method.For the patient with cervical spine instabily, after decompression, also need row bone graft fusion, but there is hemorrhage more, the shortcoming such as bone grafting is shifted, do not merge in rear outside bone grafting.Zygapophysial joints is the stable important feature of cervical vertebra, if the fusion of zygapophysial joints can be reached, then and outside bone grafting after can substituting completely, thus avoid the generation of above adverse events.
Summary of the invention
Goal of the invention: this utility model provides fusion device between a kind of screw-in Cervical zygapophyseal joint for posterior cervical laminectomy for decompression fusion, its object is to the permanent fusion being realized Cervical zygapophyseal joint by simple method.
Technical scheme: this utility model is implemented by the following technical programs:
Fusion device between a kind of screw-in Cervical zygapophyseal joint, it is characterized in that: this fusion device outward appearance is screw-like, and arranged outside has screw thread, fusion device central authorities are rhombus hollow-core construction, and rhombus hollow-core construction is successively decreased to front end Zhou Jing by tail end.
Described screw thread is shallow thread structure, and pitch width is greater than thread depth.
Described entire body be tantalum metal fusion device on spread all over microcellular structure.
Described supporting cutter is by cutter head (3), and knife bar (4) and handle (5) form; Described cutter head (3) for there being the rhombohedral insert of tapering, with fusion device rhombus hollow-core construction (2) exact matching.
Described cutter head (3) is with tapering, and section assumes diamond in shape, knife bar (4) ovalize, and tool handle (5) surface is frosting.
Advantage and effect: by enforcement of the present utility model, simplify operative procedure, hemorrhage more, the shortcoming such as bone grafting is shifted, do not merge when avoiding rear outside bone grafting, and because fusion device is tantalum metal material, good with the human-body biological compatibility, the microcellular structure similar with human body spongy bone itself had, is beneficial to Bone Ingrowth, thus promotes that zygapophysial joints merges.
accompanying drawing illustrates:
Fig. 1 is this utility model fusion device schematic diagram;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is the supporting cutter schematic diagram of this utility model;
Mark in figure: 1. fusion device screw thread, 2. rhombus hollow-core construction, 3. cutter head, 4. knife bar, 5. handle.
detailed description of the invention:
Below in conjunction with accompanying drawing, this utility model is described in detail.
As shown in Figure 1, 2, fusion device outward appearance of the present utility model is screw-like, such design is the process to zygapophysial joints when being convenient to operation technique, the tapping of application plain screw directly processes the passage the grinding completing cartilage that can set up fusion device, and be convenient to the placement of fusion device, achieve the function that this fusion device is simple and efficient.The outer wall of fusion device is provided with screw thread 1, and screw thread 1 is shallow, and pitch is wide, pitch width is greater than thread depth, generally with pitch width be thread depth 2 ~ 5 times be advisable, the object done like this be can expand better fusion device and lower articular dash forward between contact area, prevent slippage, and be beneficial to Bone Ingrowth.Fusion device is that tantalum metal material is made, good with the human-body biological compatibility, and the microcellular structure similar with human body spongy bone itself had, is beneficial to Bone Ingrowth, thus promotes that zygapophysial joints merges.Some fusion devices in the past, make a kind of structure of container, the broken bone that in-built patient takes off at other positions, merge with affected part bone, and this utility model is without the need to so loaded down with trivial details, adopts the such fusion device of tantalum metal material to solve the problem of two places operation.The central authorities of this fusion device are rhombus hollow-core construction 2, and rhombus is hollow is successively decreased to front end Zhou Jing by tail end.As shown in Figure 3, the cutter head 3 of supporting with this utility model cutter and rhombus hollow-core construction 2 exact matching of described fusion device.Cutting tool insert 3 section assumes diamond in shape, and has certain taper.Knife bar 4 ovalize, the two place's of dividing a word with a hyphen at the end of a line shape changes, and avoids excessive tool to enter fusion device.Tool handle 5 surface is frosting, anti-skidding, be beneficial to holding and controlling party to.
After general anesthesia success, patient gets ventricumbent position, and head is placed on the headstock.Routine disinfection, paving aseptic operation list, make cervical vertebra Posterior midline approach, successively cut skin, subcutaneous, deep fascia, subperiosteum peels off paraspinal muscle, appears vertebral plate to zygapophysial joints, row laminectomy for decompression.Place lateral mass or pedicle screw.Set up fusion device passage with trepan or core drill process zygapophysial joints, be screwed into fusion device between screw-in Cervical zygapophyseal joint.Flush operation district, hemostasis, placing drainage, layer-by-layer suture.Art finishes.
Claims (5)
1. a fusion device between screw-in Cervical zygapophyseal joint, is characterized in that: this fusion device outward appearance is screw-like, and outer wall is provided with screw thread (1), and fusion device central authorities are rhombus hollow-core construction (2), and rhombus hollow-core construction (2) is successively decreased to front end Zhou Jing by tail end.
2. fusion device between screw-in Cervical zygapophyseal joint according to claim 1, is characterized in that: described screw thread (1) is shallow thread structure, and pitch width is greater than thread depth.
3. fusion device between screw-in Cervical zygapophyseal joint according to claim 1, is characterized in that: described fusion device entire body is tantalum metal material, and fusion device spreads all over microcellular structure.
4. the supporting cutter of fusion device between screw-in Cervical zygapophyseal joint as claimed in claim 1, is characterized in that: described supporting cutter by cutter head (3), knife bar (4) and handle (5) composition; Described cutter head (3) is the rhombohedral insert with certain taper, with fusion device rhombus hollow-core construction (2) exact matching.
5. the supporting cutter of fusion device between screw-in Cervical zygapophyseal joint according to claim 4, is characterized in that: knife bar (4) ovalize; Tool handle (5) surface is frosting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520038854.9U CN204581602U (en) | 2015-01-21 | 2015-01-21 | Fusion device and supporting cutter thereof between a kind of screw-in Cervical zygapophyseal joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520038854.9U CN204581602U (en) | 2015-01-21 | 2015-01-21 | Fusion device and supporting cutter thereof between a kind of screw-in Cervical zygapophyseal joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204581602U true CN204581602U (en) | 2015-08-26 |
Family
ID=53917812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520038854.9U Expired - Fee Related CN204581602U (en) | 2015-01-21 | 2015-01-21 | Fusion device and supporting cutter thereof between a kind of screw-in Cervical zygapophyseal joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204581602U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104586546A (en) * | 2015-01-21 | 2015-05-06 | 王琪 | Screwed type fusion apparatus among cervical vertebra zygopophysis joints and supporting cutter of fusion apparatus |
-
2015
- 2015-01-21 CN CN201520038854.9U patent/CN204581602U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104586546A (en) * | 2015-01-21 | 2015-05-06 | 王琪 | Screwed type fusion apparatus among cervical vertebra zygopophysis joints and supporting cutter of fusion apparatus |
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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: 20150826 Termination date: 20180121 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |