CN208659473U - Annulus fibrosus disci intervertebralis knife - Google Patents
Annulus fibrosus disci intervertebralis knife Download PDFInfo
- Publication number
- CN208659473U CN208659473U CN201720337240.XU CN201720337240U CN208659473U CN 208659473 U CN208659473 U CN 208659473U CN 201720337240 U CN201720337240 U CN 201720337240U CN 208659473 U CN208659473 U CN 208659473U
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- CN
- China
- Prior art keywords
- knife
- rod segment
- annulus fibrosus
- cutter hub
- disci intervertebralis
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- 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.)
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Links
- 210000000845 cartilage Anatomy 0.000 description 4
- 210000000988 bone and bone Anatomy 0.000 description 2
- 210000005065 subchondral bone plate Anatomy 0.000 description 2
- 210000000709 aorta Anatomy 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Surgical Instruments (AREA)
- Prostheses (AREA)
Abstract
The utility model provides a kind of annulus fibrosus disci intervertebralis knife, including sequentially connected knife handle (1), knife bar (2), cutter head (3)；Cutter head (3) includes cutter hub (301) and blade (302)；Cutter hub (301) radially extends protrusion by knife bar (2)；Blade (302) is located on the distal face of cutter hub (301).Knife bar (2) includes the first rod segment (201) and the second rod segment (202)；Second rod segment (202) uses the hardened structure of arc.Blade (302) uses concave arc shape cutting edge.The utility model is structurally reasonable, easy to operate, suitable for the cutting of annulus fibrosus disci intervertebralis, can shorten dramatically operating time, reduce operating difficulty.
Description
Technical field
The utility model relates to surgical instruments, and in particular, to annulus fibrosus disci intervertebralis knife.
Background technique
Interverbebral disc includes the nucleus pulposus of central portion, the fibrous ring of periphery and upper cartilage endplate and lower cartilage positioned at both ends
Soleplate, upper cartilage endplate have collectively constituted upper terminal plate of vertebral body with subchondral bone thereon, and upper terminal plate of vertebral body is located at upper centrum center
Cancellous bone and interverbebral disc between, lower cartilage endplate and its lower subchondral bone have collectively constituted hypocentrum soleplate, hypocentrum end
Plate is located between the cancellous bone and interverbebral disc at hypocentrum center.The operation of lumbar vertebral posterior Total spondylectomy needs to cut off interverbebral disc group
It knits.Annulus fibrosus disci intervertebralis structure is more tough and tensile, lacks corresponding Special surgical instrument at present, and excision interverbebral disc generallys use osteotome
Chisel is disconnected, has damage the risk (aorta, vena cave) of important blood vessels in front of centrum, increases time and the difficulty of operation.
Utility model content
For the defects in the prior art, the purpose of the utility model is to provide a kind of annulus fibrosus disci intervertebralis knives.
According to a kind of annulus fibrosus disci intervertebralis knife provided by the utility model, including sequentially connected knife handle, knife bar, cutter head；
Cutter head includes cutter hub and blade；
Cutter hub radially extends protrusion by knife bar；
Blade is located on the distal face of cutter hub.
Preferably, which is characterized in that knife bar includes the first rod segment and the second rod segment；
The proximal end of first rod segment is mounted on knife handle；The distal end of first rod segment connects the proximal end of the second rod segment；
The distal portion of second rod segment is provided with cutter head.
Preferably, which is characterized in that the first rod segment uses column structure；Second rod segment uses the hardened structure of arc；Cutter head setting
On the cancave cambered surface of the hardened structure of arc.
Preferably, which is characterized in that along proximate direction, the width of cutter hub is become narrow gradually.
Preferably, blade extends to cutter hub bottom end by cutter hub top.
Preferably, there are distances between cutter hub bottom end and the distal end of knife bar.
Preferably, blade uses concave arc shape cutting edge.
Preferably, the angle between the tangential direction of the second rod segment proximal end and the axial direction of the first rod segment is obtuse angle.
Preferably, cutter hub top is located on the proximal direction of cutter hub bottom end.
Preferably, blade is with twolip face.
Compared with prior art, the utility model have it is following the utility model has the advantages that
The utility model is structurally reasonable, easy to operate, suitable for the cutting of annulus fibrosus disci intervertebralis, can shorten dramatically operation
Time reduces operating difficulty and risk.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other spies of the utility model
Sign, objects and advantages will become more apparent upon:
Fig. 1 is the side structure schematic diagram of annulus fibrosus disci intervertebralis knife provided by the utility model.
Fig. 2 is the schematic perspective view of the front end portion of annulus fibrosus disci intervertebralis knife provided by the utility model.
It is shown in figure:
Specific embodiment
The utility model is described in detail combined with specific embodiments below.Following embodiment will be helpful to this field
Technical staff further understands the utility model, but does not limit the utility model in any form.It should be pointed out that ability
For the those of ordinary skill in domain, without departing from the concept of the premise utility, several changes and improvements can also be made.
These are all within the protection scope of the present invention.
As shown in Figure 1, the utility model provides a kind of annulus fibrosus disci intervertebralis knife, including sequentially connected knife handle 1, knife bar 2,
Cutter head 3；Cutter head 3 includes cutter hub 301 and blade 302；Cutter hub 301 radially extends protrusion by knife bar 2；Blade 302 is located at cutter hub
On 301 distal face.
Specifically, knife bar 2 includes the first rod segment 201 and the second rod segment 202；The proximal end of first rod segment 201 is mounted on knife handle 1
On；The distal end of first rod segment 201 connects the proximal end of the second rod segment 202；The distal portion of second rod segment 202 is provided with cutter head 3.First
Rod segment 201 uses column structure；Second rod segment 202 uses the hardened structure of arc；Cutter head 3 is arranged on the cancave cambered surface of the hardened structure of arc.Knife
Sword 302 uses concave arc shape cutting edge.Between the tangential direction of second rod segment, 202 proximal end and the axial direction of the first rod segment 201
Angle is obtuse angle.
Further specifically, as shown in Fig. 2, cutter hub top 3011 is located on the proximal direction of cutter hub bottom end 3012.Edge
The width in proximate direction, cutter hub 301 becomes narrow gradually.Blade 302 extends to cutter hub bottom end 3012 by cutter hub top 3011.
There are distances between cutter hub bottom end 3012 and the distal end of knife bar 2.Blade 302 is with twolip face.
Specific embodiment of the utility model is described above.It is to be appreciated that the utility model not office
It is limited to above-mentioned particular implementation, those skilled in the art can make a variety of changes or modify within the scope of the claims,
This has no effect on the substantive content of the utility model.In the absence of conflict, the spy in embodiments herein and embodiment
Sign can be arbitrarily combined with each other.
Claims (10)
1. a kind of annulus fibrosus disci intervertebralis knife, which is characterized in that including sequentially connected knife handle (1), knife bar (2), cutter head (3)；
Cutter head (3) includes cutter hub (301) and blade (302)；
Cutter hub (301) radially extends protrusion by knife bar (2)；
Blade (302) is located on the distal face of cutter hub (301).
2. annulus fibrosus disci intervertebralis knife according to claim 1, which is characterized in that knife bar (2) include the first rod segment (201) and
Second rod segment (202)；
The proximal end of first rod segment (201) is mounted on knife handle (1)；The distal end connection the second rod segment (202) of first rod segment (201)
Proximal end；
The distal portion of second rod segment (202) is provided with cutter head (3).
3. annulus fibrosus disci intervertebralis knife according to claim 2, which is characterized in that the first rod segment (201) uses column structure；
Second rod segment (202) uses the hardened structure of arc；Cutter head (3) is arranged on the cancave cambered surface of the hardened structure of arc.
4. annulus fibrosus disci intervertebralis knife according to claim 1, which is characterized in that along proximate direction, cutter hub (301)
Width become narrow gradually.
5. annulus fibrosus disci intervertebralis knife according to claim 1, which is characterized in that blade (302) is by cutter hub top (3011)
Extend to cutter hub bottom end (3012).
6. annulus fibrosus disci intervertebralis knife according to claim 5, which is characterized in that cutter hub bottom end (3012) and knife bar (2)
There are distances between distal end.
7. annulus fibrosus disci intervertebralis knife according to claim 1, which is characterized in that blade (302) uses concave arc shape cutting edge.
8. annulus fibrosus disci intervertebralis knife according to claim 3, which is characterized in that the second rod segment (202) proximal end it is tangential
Angle between direction and the axial direction of the first rod segment (201) is obtuse angle.
9. annulus fibrosus disci intervertebralis knife according to claim 1, which is characterized in that cutter hub top (3011) are located at cutter hub bottom end
(3012) on proximal direction.
10. annulus fibrosus disci intervertebralis knife according to claim 1, which is characterized in that blade (302) is with twolip face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720337240.XU CN208659473U (en) | 2017-03-31 | 2017-03-31 | Annulus fibrosus disci intervertebralis knife |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720337240.XU CN208659473U (en) | 2017-03-31 | 2017-03-31 | Annulus fibrosus disci intervertebralis knife |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208659473U true CN208659473U (en) | 2019-03-29 |
Family
ID=65818785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720337240.XU Active CN208659473U (en) | 2017-03-31 | 2017-03-31 | Annulus fibrosus disci intervertebralis knife |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208659473U (en) |
-
2017
- 2017-03-31 CN CN201720337240.XU patent/CN208659473U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240204 Address after: 321016 No.466, Xianhua South Street, Wucheng District, Jinhua City, Zhejiang Province Patentee after: CANWELL MEDICAL Co.,Ltd. Country or region after: China Address before: 200041 No. 415, Fengyang Road, Huangpu District, Shanghai Patentee before: SECOND AFFILIATED HOSPITAL, SECOND MILITARY MEDICAL University Country or region before: China |
|
| TR01 | Transfer of patent right |