CN205458928U - Vertebra cuts three angle of throats in bone - Google Patents
Vertebra cuts three angle of throats in bone Download PDFInfo
- Publication number
- CN205458928U CN205458928U CN201620149436.1U CN201620149436U CN205458928U CN 205458928 U CN205458928 U CN 205458928U CN 201620149436 U CN201620149436 U CN 201620149436U CN 205458928 U CN205458928 U CN 205458928U
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- CN
- China
- Prior art keywords
- cutter hub
- shank
- blade
- knife
- cutting edge
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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.)
- Withdrawn - After Issue
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Abstract
The utility model relates to a vertebra cuts three angle of throats in bone belongs to surgical instruments. The utility model provides a vertebra cuts three angle of throats in bone, including the cutter body and the handle pole of front end, the lower part of cutter body is equipped with three group's cutting edges, the lateral part cutting edge of both sides cutting edge symmetry in the middle of relatively, and is the cutting part height of middle cutting edge that the cutting part of lateral part cutting edge is high by 4 5 doubly, the wide 8mm of the back of a knife blade, the middle part position is the arc to three group's cutting edges from the cutter body front end toward the cutting edge, and the length of middle cutting edge is 12mm, and is the height of middle cutting edge 10 20mm, the cutter body rear portion is passed through arc portion and is connected the handle pole, and the back of a knife blade of cutter body is level and smooth, slick and sly linking to each other between the both sides cutting edge root and the back of a knife blade.
Description
Technical field
This utility model relates to a kind of vertebra osteotomy 3-edge surgical knife, belongs to operating theater instruments.
Background technology
The operation of Via Posterior Spinal Approach spinal canal decompression vertebral fusion is Orthopeadic Surgery common surgical, always relates to vertebral fusion bone-graft fusion technology in multiple operating process.Clinical symptoms, the selection scheme that operation is the most optimal are suffered from existence and improvement for improving patient.But being considered as vertebral body rear has spinal cord, anterior margin of vertebral body to have important blood vessels, the damage of any significant points will cause serious adverse consequences, and this acts on behalf of huge challenge to spinal surgeon.The integration technology of vertebral body needs to remove intervertebral disc thoroughly, and including soft tissue and disc tissue, traditional osteotome is only capable of being purged interpyramidal tissue, or because the design defect of osteotome causes the osteotomy of vertebral rim to have difficulties；One of Operative Puzzle is when excising operation for intervertebral space inner tissue to need the auxiliary of multiple apparatus to treat, and requires neural and blood vessel are carried out protective measure accurately, and operation just can be prevented blood vessel and the damage of nerve.
Traditional intervertebral osteotome, is only capable of being purged the disc tissue in vertebral body centre, and the degree of depth of osteotome, osteotomy scope control have difficulties, and needs neural and blood vessel are carried out protective measure accurately in the processing procedure of vertebral rim.The feature of operation causes operating time to extend, and the shortcoming that amount of bleeding increases, injured nerve risk increases.
First, during Intervertebral fusion art, the osteotomy of vertebral body is operated, it is often necessary to the rotary osteotomy cutter of plurality of specifications substitutes use, cause the prolongation of operating time, increase infection risk；
Secondly, to the nerve at rear and the disappearance of the vascular protection in front, traditional operation machinery easy damaged blood vessel and nerve, serious consequence is caused.
Summary of the invention
The purpose of this utility model is to provide a kind of vertebra osteotomy 3-edge surgical knife, solves the traditional intervertebral osteotomy degree of depth, problem that osteotomy scope control has difficulties.
For achieving the above object, the technical solution adopted in the utility model is:
Vertebra osteotomy 3-edge surgical knife, cutter hub and shank including front end, the bottom of described cutter hub is provided with three groups of blades, the relatively middle blade of the side edges of both sides is symmetrical, the blade height of middle blade is 4-5 times that the blade of side edges is high, knife back width 8mm, three groups of blades are curved toward blade medium position from cutter hub front end, a length of 12mm of middle blade, the a height of 10-20mm of blade of middle blade, cutter hub rear portion connects shank by curved portions, and the knife back of cutter hub smooths, and both sides blade root is round and smooth with between the knife back to be connected.
As preferably, curved portions is round and smooth between the inner side of cutter hub Yu shank junction, curved portions with the knife back of cutter hub and shank to be connected.
As the most preferably, cutter hub is the longest 20mm after being connected with shank, and shank is cylinder, a diameter of 8mm of shank.
As further preferred, the inner side arc radius surface of curved portions is 8mm；Shank rear end sets handle, and cutter hub is vertical with shank, and cutter hub is smooth in addition to blade edge position, without cutting edge of a knife or a sword rib, impulse-free robustness and flawless everywhere.
As further preferred, handle is flat, a width of 10mm of handle, thick 8mm.
This utility model benefit in operation is as follows:
1, this utility model is without the stripping undue to the soft tissue around spinal cord, reduces the operation of tissue injury；Spinal nerves that the cambered design at osteotome top is sufficiently protected and nerve root, will not produce compressing to nerve, and sharp blade directly acts on interbody space, plays the neural effect of isolation.
2, this utility model design has taken into full account that the physiology of intervertebral space is dissected, and width is applicable to the physiology width of interbody space, can carry out osteotomy, the shortcoming that compensate for traditional instruments by fully upper and lower to vertebral body edge while osteotomy；
3, this utility model is after interbody space bone grafting, can carry out intervertebral impaction bone grafting further, serve as the instrument of impaction bone grafting apparatus, accomplish an apparatus several functions.
Accompanying drawing explanation
Fig. 1 is front view of the present utility model,
Fig. 2 is left view of the present utility model,
Fig. 3 is top view of the present utility model.
Fig. 4 is application schematic diagram of the present utility model.
1, cutter hub, 2, curved portions, 3, shank, 4, handle, 5, middle blade, 6, side edges, 7, the knife back, 8, nervous system, 9, vertebral body.
Detailed description of the invention
This utility model, vertebra osteotomy 3-edge surgical knife, including cutter hub 1 and the shank 3 of front end, the bottom of described cutter hub 1 is provided with three groups of blades, and the relatively middle blade of the side edges of both sides is symmetrical, the blade height 16mm of middle blade 5, being high 4-5 times of the blade of side edges 6, the blade of middle blade 5 is wider than the blade width of side edges 6, the wide 8mm of the knife back 7, the knife back of cutter hub smooths, and both sides blade root is round and smooth with between the knife back to be connected.
Three groups of blades are curved toward blade medium position from cutter hub front end, the middle long 12mm of blade, the a height of 10-20mm of blade of middle blade, cutter hub 1 rear portion connects shank 3 by curved portions 2, curved portions 2, in the inner side of cutter hub 1 with shank 3 junction, round and smooth between curved portions 2 with the knife back 7 of cutter hub 1 and shank 3 is connected.The inner side arc radius surface of curved portions 2 is 8mm；Shank 3 rear end sets handle 4, and cutter hub 1 is vertical with shank 3, and cutter hub 1 is smooth in addition to blade edge position, without cutting edge of a knife or a sword rib, impulse-free robustness and flawless everywhere.Cutter hub 1 is the longest 20mm after being connected with shank 3, and shank 3 is cylinder, a diameter of 8mm of shank 3.Handle 4 is flat, a width of 10mm of handle, thick 8mm.
Embodiment
This utility model is osteotomy application in osteotomy orthopaedy, Via Posterior Spinal Approach interbody fusion or the Via Posterior Spinal Approach fixation of spinal anterior approach (being commonly called as hunchback).
This utility model osteotomy in operation divides left and right two step operation, separates vertebral body and nervous system, the smooth structure at cutter hub back and nerve contact in first spinal column is goed deep in cutter hub front end, and cutter hub back is neural completely with the round and smooth structural defence of both sides blade；Then the middle blade of cutter hub carries out osteotomy operation to front end vertebral body, and middle blade gos deep into the internal osteotomy of vertebral body, and side edges can carry out osteotomy by fully upper and lower to vertebral body edge while middle blade osteotomy.
The sawtooth design at knife back top can sufficiently protect the rational numerical Design of nerve and nerve root, width and the degree of depth can sufficiently avoid osteotomy the deepest, it is to avoid damage front important blood vessels.
This utility model operating time in vertebra osteotomy is fast, can complete disc tissue and the osteotomy of upper and lower vertebral rim rapidly.The operation time greatly saved, reduces infection risk.
Claims (5)
1. a vertebra osteotomy 3-edge surgical knife, cutter hub (1) and shank (3) including front end, it is characterized in that, the bottom of described cutter hub (1) is provided with three groups of blades, the relatively middle blade of the side edges of both sides is symmetrical, the blade height of middle blade (5) is 4-5 times that the blade of side edges (6) is high, the wide 8mm of the knife back (7), three groups of blades are curved toward blade medium position from cutter hub front end, a length of 12mm of middle blade, the a height of 10-20mm of blade of middle blade, cutter hub (1) rear portion connects shank (3) by curved portions (2), the knife back of cutter hub smooths, both sides blade root is round and smooth with between the knife back to be connected.
Vertebra osteotomy 3-edge surgical knife the most according to claim 1, is characterized in that, described curved portions (2) is round and smooth between the inner side of cutter hub (1) Yu shank (3) junction, curved portions (2) with the knife back of cutter hub (1) (7) and shank (3) to be connected.
Vertebra osteotomy 3-edge surgical knife the most according to claim 2, is characterized in that, described cutter hub (1) be connected with shank (3) after the longest 20mm, shank (3) is cylinder, shank (3) a diameter of 8mm.
Vertebra osteotomy 3-edge surgical knife the most according to claim 3, is characterized in that, the inner side arc radius surface of described curved portions (2) is 8mm；Shank (3) rear end sets handle (4), and cutter hub (1) is vertical with shank (3), and cutter hub (1) is smooth in addition to blade edge position, without cutting edge of a knife or a sword rib, impulse-free robustness and flawless everywhere.
Vertebra osteotomy 3-edge surgical knife the most according to claim 4, is characterized in that, described handle (4) is flat, a width of 10mm of handle, thick 8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620149436.1U CN205458928U (en) | 2016-02-29 | 2016-02-29 | Vertebra cuts three angle of throats in bone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620149436.1U CN205458928U (en) | 2016-02-29 | 2016-02-29 | Vertebra cuts three angle of throats in bone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205458928U true CN205458928U (en) | 2016-08-17 |
Family
ID=56678303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620149436.1U Withdrawn - After Issue CN205458928U (en) | 2016-02-29 | 2016-02-29 | Vertebra cuts three angle of throats in bone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205458928U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105596057A (en) * | 2016-02-29 | 2016-05-25 | 王存平 | Vertebra osteotomy three-blade cutter |
-
2016
- 2016-02-29 CN CN201620149436.1U patent/CN205458928U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105596057A (en) * | 2016-02-29 | 2016-05-25 | 王存平 | Vertebra osteotomy three-blade cutter |
| CN105596057B (en) * | 2016-02-29 | 2018-06-15 | 王存平 | Vertebra osteotomy 3-edge surgical knife |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160817 Effective date of abandoning: 20180615 |