CN201200472Y - Elastic passage-opening awl for vertebral pedicle - Google Patents
Elastic passage-opening awl for vertebral pedicle Download PDFInfo
- Publication number
- CN201200472Y CN201200472Y CNU2008200294452U CN200820029445U CN201200472Y CN 201200472 Y CN201200472 Y CN 201200472Y CN U2008200294452 U CNU2008200294452 U CN U2008200294452U CN 200820029445 U CN200820029445 U CN 200820029445U CN 201200472 Y CN201200472 Y CN 201200472Y
- Authority
- CN
- China
- Prior art keywords
- screw
- awl
- pedicle
- cone
- open circuit
- 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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Abstract
The utility model belongs to the category of the orthopaedics department in clinic medicine, more particularly relates to an improvement of a guiding wimble which is used for preparing a screw path of a pediculus arcus vertebrae screw in fixation of the pediculus arcus vertebrae screw of the upper thoracica segment of a human body, in particular to a pediculus arcus vertebrae elastic guiding wimble. The wimble body of an original guiding wimble is of a taper shape, when the screw path of the pediculus arcus vertebrae screw is prepared, because the hardness is higher, conditions for penetrating the side wall of the pediculus arcus vertebrae, the front edge of the centrum, and the like often happen to cause the failure for embedding the pediculus arcus vertebrae screw. The guiding wimble body of the utility model has identical diameters at the upper and the lower parts; the wimble tip is of an oblateness; and four elastic guiding wimbles with same structures and different sizes are adopted to complete the preparation of the screw path of the pediculus arcus vertebrae screw in separating steps, thereby the embedding problem of the pediculus arcus vertebrae screw of the upper upper thoracica segment is effectively solved, and the operation security is improved.
Description
One, technical field
This utility model prepares the open circuit awl improvement of using in screw nail road when belonging in the clinical medicine orthopaedics on the human body breast section LOCATION OF PEDICLE SCREW FIXATION, is specifically related to a kind of preparation pedicle screw nail road with elasticity open circuit awl.
Two, background technology
Fracture of thoracic vertebrae, tuberculosis, side is protruding and the treatment of congenital malformation etc. in, often need carry out LOCATION OF PEDICLE SCREW FIXATION, this just requires to prepare thoracic pedicle screw nail road.Be that with the waist awl identical product, its cone are conical, are tapered upper end diameter 4.5mm, lower end diameter 3.5mm from top to bottom and prepare the open circuit awl that uses often in thoracic pedicle screw nail road at present; Boring sharp width is 3.2mm, and the awl crack tip is total to labelling 7cm from the 3cm beginning label.Its material with the little steel of hard steel band, suppleness as raw material, hardness is bigger, lack flexibility, and on the human body thoracic vertebral pedicle diameter generally about 3.0～4.0mm, add that the pedicle of vertebral arch sidewall is very thin, usually occur when therefore, using former open circuit awl preparation pedicle screw nail road: 1. penetrate the pedicle of vertebral arch side; 2. open circuit awl diameter is big than the pedicle of vertebral arch diameter; 3. penetrate anterior margin of vertebral body easily, can not implant pedicle screw or pedicle screw graft failure thereby cause.
Three, summary of the invention
When the purpose of this utility model is to solve pedicle screw nail road and prepares, cause the pedicle screw that penetrates pedicle of vertebral arch sidewall or anterior margin of vertebral body and cause to implant or the problem of graft failure easily.
The technical solution adopted in the utility model is: a kind of pedicle of vertebral arch elasticity open circuit awl, comprise taper shank and cone, and its special feature is: the diameter of described cone is unanimous between the higher and lower levels, and the cone lower end is provided with an oblate awl point.
The diameter of above-mentioned cone is 1.0mm, and cone length is 10cm.
The diameter of above-mentioned cone is 1.5mm, and cone length is 12cm.
The diameter of above-mentioned cone is 2.0mm, and cone length is 14cm.
The diameter of above-mentioned cone is 2.5mm, and cone length is 16cm.
The rear surface of above-mentioned cone is provided with graduation mark.
Above-mentioned cone adopts the steel soft, that suppleness is big as raw material, as the 316L medical steel.
This utility model relatively and prior art following advantage and effect are arranged:
1, selects for use the steel soft, that suppleness is big as raw material, make the open circuit awl have better elastic and suppleness.
2, cone can bend automatically when when open circuit awl point is run into the cortical bone of pedicle of vertebral arch side, and such one is to reduce into awl dynamics, can not wear out the cortical bone of pedicle of vertebral arch side; The 2nd, can remind the operator to change into awl direction; The 3rd, bend if advance to bore the pedicle of vertebral arch length of measuring before the degree of depth and the art consistent and this moment of cone, prompting has reached the degree of depth of expection, stops to bore; Make the whole operation process under the elasticity guiding of open circuit awl, finish.
3, adopt former open circuit awl preparation nail road to need often to monitor operating process in real time with G-type arm X-ray machine or navigation system, and the patient is 800～3000 yuan of this monitoring need defrayments, and this open circuit awl whole operation process when preparation nail road is to finish under the elasticity guiding that open circuit is bored, do not need monitoring, can be the patient and reduce expenses, and shortened operating time.
Four, description of drawings
Fig. 1 is open circuit wimble structure sketch map;
1-taper shank wherein, the 2-cone, 3-bores point, 4-graduation mark.
Five. the specific embodiment
Referring to Fig. 1, this utility model pedicle of vertebral arch elasticity open circuit awl comprises taper shank 1 and cone 2, and the diameter of its cone 2 is unanimous between the higher and lower levels, and awl point 3 is oblate, and cone 2 front ends are made a graduation mark 4 every 1cm and carried out labelling, altogether labelling 6cm.
Because consider cone diameter to suppleness and elastic influence, and will reach the requirement of pedicle screw nail road diameter, open circuit awl of the present utility model comprises four kinds of models, is followed successively by;
1. cone diameter 1.0mm, cone length 10cm;
2. cone diameter 1.5mm, cone length 12cm;
3. cone diameter 2.0mm, cone length 14cm;
4. cone diameter 2.5mm, cone length 16cm.
Earlier will be 1. during use-4. number elasticity open circuit is bored autoclave sterilization, after removing the cortical bone of pedicle of vertebral arch entry point again, elder generation's application 1. number elasticity open circuit awl firmly evenly and slowly bores along the direction of pedicle of vertebral arch, whenever advancing 1cm detects with probe, in case wear out cortical bone, advance in the awl process when conehead is run into pedicle of vertebral arch side cortical bone, cone can bend automatically owing to having elasticity, can remind this moment the operator will change the direction that awl goes into otherwise will wear out cortical bone, if advance to bore the pedicle of vertebral arch length of measuring before the degree of depth and the operation consistent and at this moment cone bend, prompting has reached the degree of depth of expection, stops awl and goes into, and takes out 1. number awl; Change 2. number elasticity open circuit awl again, operation is the same, continues to change successively 3. number elasticity open circuit awl and 4. number elasticity open circuit awl after operation is finished, and can finish the preparation in pedicle screw nail road after a whole set of open circuit awl awl goes into to finish.In preparation nail road from 1. number awl successively to 2. number awl, 3. number awl, 4. number awl, make entering all the time of back awl in the awl road of inner cone, carry out, and progressively enlarge the awl road, thereby improve the safety of operation.
Claims (7)
1, a kind of pedicle of vertebral arch elasticity open circuit awl comprises taper shank (1) and cone (2), and it is characterized in that: the diameter of described cone (2) is unanimous between the higher and lower levels, and cone (2) lower end is provided with an oblate awl point (3).
2, a kind of pedicle of vertebral arch elasticity open circuit awl according to claim 1, it is characterized in that: the diameter of described cone (2) is 1.0mm, length is 10cm.
3, a kind of pedicle of vertebral arch elasticity open circuit awl according to claim 1, it is characterized in that: the diameter of described cone (2) is 1.5mm, length is 12cm.
4, a kind of pedicle of vertebral arch elasticity open circuit awl according to claim 1, it is characterized in that: the diameter of described cone (2) is 2.0mm, length is 14cm.
5, a kind of pedicle of vertebral arch elasticity open circuit awl according to claim 1, it is characterized in that: the diameter of described cone (2) is 2.5mm, length is 16cm.
6, according to claim 1,2,3,4 or 5 described a kind of pedicle of vertebral arch elasticity open circuit awls, it is characterized in that: the rear surface of described cone (2) is provided with graduation mark (4).
7, a kind of pedicle of vertebral arch elasticity open circuit awl according to claim 6, it is characterized in that: described cone (2) adopts the steel soft, that suppleness is big as raw material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200294452U CN201200472Y (en) | 2008-06-26 | 2008-06-26 | Elastic passage-opening awl for vertebral pedicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200294452U CN201200472Y (en) | 2008-06-26 | 2008-06-26 | Elastic passage-opening awl for vertebral pedicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201200472Y true CN201200472Y (en) | 2009-03-04 |
Family
ID=40422784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200294452U Expired - Fee Related CN201200472Y (en) | 2008-06-26 | 2008-06-26 | Elastic passage-opening awl for vertebral pedicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201200472Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104173101A (en) * | 2014-09-11 | 2014-12-03 | 昆明医科大学第一附属医院 | Device for constructing dilator channel under unilateral pedicle admission passage condition |
-
2008
- 2008-06-26 CN CNU2008200294452U patent/CN201200472Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104173101A (en) * | 2014-09-11 | 2014-12-03 | 昆明医科大学第一附属医院 | Device for constructing dilator channel under unilateral pedicle admission passage condition |
| CN104173101B (en) * | 2014-09-11 | 2017-01-11 | 昆明医科大学第一附属医院 | Device for constructing dilator channel under unilateral pedicle admission passage condition |
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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: 20090304 |