CN206434376U - Spacing safe trepan - Google Patents
Spacing safe trepan Download PDFInfo
- Publication number
- CN206434376U CN206434376U CN201621020750.6U CN201621020750U CN206434376U CN 206434376 U CN206434376 U CN 206434376U CN 201621020750 U CN201621020750 U CN 201621020750U CN 206434376 U CN206434376 U CN 206434376U
- Authority
- CN
- China
- Prior art keywords
- guide rod
- spacing
- trepan
- spacing guide
- saw 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
Links
Abstract
The utility model discloses a kind of spacing safe trepan, including：Spacing guide rod, the spacing guide rod is provided with inner via hole, and the outer wall of the spacing guide rod is provided with screw thread, and front end is circle obtuse；And saw body, the saw body is in hollow form, and is sheathed on the spacing guide rod, and the internal wall of saw is located at the intermeshing screw thread of guide rod outer wall thread, and front end is provided with sawtooth；In the state of removing operation consent is carried out, the front end of the spacing guide rod circle obtuse is beyond the sawtooth for sawing body front end.Spacing safe trepan of the present utility model, it is safe to be precisely controlled removing length, it is to avoid to enter canalis spinalis injured nerve.Efficiency high, can reduce perspective and operating time with one-shot forming.It is convenient and swift that cleaning stays in bone piece in trepan.
Description
Technical field
The utility model is related to medical instruments field, more particularly to a kind of spacing safe trepan.
Background technology
Side way of escape foramen intervertebrale lens technology (TEssYS technologies) is by German Hoogland in utility model in 2002, and this is one
Protrusion ablation techniques under the way of escape transforaminal approach canalis spinalis expert's scope of lumbar vertebrae side are planted, its core is to utilize trepan or bone drill pair
Processus articular superior Partial Resection, carries out intervertebral foramen shaping, places diameter 7.5 or 8mm working columns, intervertebral is placed in working column
Aperture mirror, is extractd, a kind of minimally invasive spine surgical that nerve root Decompression is loosened under scope to disc herniation.
TEssYS technology spiral bone drill operating procedures：Patient takes prone position to obtain lateral position.Had an X-rayed using C arms, according to preoperative X
Line, subject disk target spot and processus articular superior tip line are as line is punctured, with reference to ilium height, transverse process position, patient size
And pedicle of vertebral arch distance appropriateness adjustment Bing determines skin penetrating point, typically apart from center line 8-14cm, head inclines 30 ° to be punctured to front lower.Enter
Anaesthetized at pin mark and puncture path local anaesthesia, processus articular superior.Processus articular superior is passed through in No. 18 lancet punctures, C arms perspective confirmation
Outer rim, normotopia, side position perspective confirm that needle point is located at target (protrusion) place.As the undesirable use diplopore adjuster in position enters
Row adjustment, or punched using the TOM pins of Hoogland utility models in processus articular superior, can place seal wire Bing after the satisfaction of position stays
Put, extract puncture needle, soft-tissue expansion is carried out to processus articular superior along seal wire insertion guide rod.Utilization is used along seal wire insertion
(from small to large, diameter 4mm, 6mm, 7mm, 8mm, inner sleeve is correspondingly sized for the MaxMoreSpine trepans of Hoogland utility models
Guide rod) processus articular superior part is sawed step by step and removed, intervertebral foramen shaping is carried out, Bing places working column.
TEssYS technological cores are, to processus articular superior Partial Resection, to carry out intervertebral foramen shaping using trepan.In clinical practice
In we run into problems with using trepan：Safety issue.Because trepan is needed to abrade on the inside of processus articular superior for intraspinal tube god
Through root and dural sac, grasp bad dynamics using trepan and abrading stroke can cause trepan to abruptly enter too deep injured nerve and hard
Membrane vesicle.2nd, 4 grades of trepans remove articular process from as low as big saw step by step, and fluoroscopic puncture locating and monitoring is excessive, and process is cumbersome.
The information for being disclosed in the background section is merely intended to increase the understanding to general background of the present utility model, and
It is not construed as recognizing or implies that the information structure has been existing well known to persons skilled in the art in any form
Technology.
Utility model content
The purpose of this utility model is a kind of spacing safe trepan of offer, so that when overcoming saw except joint protrusion, trepan
Grasp bad dynamics and abrade the shortcoming that stroke can cause trepan to abruptly enter too deep injured nerve and dural sac.
To achieve the above object, the utility model provides a kind of spacing safe trepan, including：Spacing guide rod, this is spacing
Guide rod is provided with inner via hole, and the outer wall of the spacing guide rod is provided with screw thread, and front end is circle obtuse；And saw body, the saw body is in hollow
Shape, and be sheathed on the spacing guide rod, the internal wall of saw is located at the intermeshing screw thread of guide rod outer wall thread, front end
Provided with sawtooth；In the state of removing operation consent is carried out, the front end of the spacing guide rod circle obtuse is beyond the saw body front end
Sawtooth.
Preferably, in above-mentioned technical proposal, the saw body rear end is provided with handle, and the handle is fixedly connected with the saw body.
Preferably, in above-mentioned technical proposal, the outer wall of the spacing guide rod is provided with external screw thread, and the inwall of the saw body is provided with
External screw thread.
Preferably, in above-mentioned technical proposal, the spacing guide rod rear end is provided with fixed tightening nut.
Preferably, in above-mentioned technical proposal, the front end of the spacing guide rod circle obtuse is beyond the sawtooth for sawing body front end
Length be 2mm.
Compared with prior art, the utility model has the advantages that：
(1) spacing safe trepan of the present utility model, gag lever post in the spacing safe trepan of 7 or 8mm sheets, which is screwed, to be made to justify blunt
Part is a little (2mm) beyond outer trepan sawtooth, and articular process bone face is inserted into along seal wire by gag lever post endoporus.Opposite direction screws out limit
Bar a little suitable length in position (is much smaller than according to Radiological measurement safe distance) during beginning, and the saw body of slow rotation trepan is to joint
Prominent bony structure is abraded.Final stage locating rod is screwed out a little, and trepan enters a little, has and stops entrance when falling through sense.Take
Go out the saw body (containing bone piece under interior saw) of trepan, complete articular process shaping.Use spacing safe trepan of the present utility model, security
High energy is precisely controlled removing length, it is to avoid enter canalis spinalis injured nerve.Efficiency high, can be reduced perspective and is performed the operation with one-shot forming
Time.It is convenient and swift that cleaning stays in bone piece in trepan.
(2) spacing guide rod of the present utility model is provided with internal thread, saws internal wall and is provided with intermeshing outer with internal thread
Screw thread.When being performed the operation, achievable trepan formation length is controllable, reduces the possibility of neurotrosis.
(3) front end of the spacing guide rod of the utility model is circle obtuse, and in the state of removing operation consent is carried out, it is spacing to lead
The front end of bar circle obtuse can make trepan relatively easy when by soft tissue beyond the sawtooth of saw body front end, also ensure there is foot
Enough to bone piece contact surface.
Brief description of the drawings
Fig. 1 is the structural representation according to spacing safe trepan of the present utility model.
Fig. 2 is the structural representation according to spacing guide rod in spacing safe trepan of the present utility model.
Fig. 3 is the profile according to A-A in spacing guide rod in spacing safe trepan of the present utility model.
Fig. 4 is according to the structural representation that body is sawed in spacing safe trepan of the present utility model.
Embodiment
Below in conjunction with the accompanying drawings, embodiment of the present utility model is described in detail, it is to be understood that this practicality
New protection domain is not limited by embodiment.
Explicitly indicated that unless otherwise other, otherwise in entire disclosure and claims, term " comprising " or its change
Change such as "comprising" or " including " etc. and will be understood to comprise stated element or part, and do not exclude other members
Part or other parts.
As shown in Figures 1 to 4, according to a kind of spacing safe trepan of the utility model embodiment, including it is spacing
Guide rod 1 and saw body 2.The spacing guide rod is provided with inner via hole 11, and the outer wall on spacing guide rod top is provided with external screw thread 12, spacing guide rod 1
Front end is circle obtuse 13.It is in hollow form to saw body 2, and saw body 2 is sheathed on spacing guide rod 1, saws internal wall outer on guide rod outer wall
The intermeshing internal thread (not shown) of screw thread 12, saw body front end is provided with sawtooth 21.Carrying out abrading prominent bony structure
Before in the state of, the front end of spacing guide rod circle obtuse is 2mm beyond the length of the sawtooth of saw body front end.
Preferably, saw body 2 rear end is provided with handle 22, and the handle 22 is fixedly connected with saw body.Spacing guide rod rear end is provided with solid
Fixed tightening nut 14.
The operating procedure performed the operation using the spacing safe trepan of the utility model is as follows：Body surface location, anesthesia, puncture,
Soft-tissue expansion is with TEssYS technologies.Gag lever post in the spacing safe trepan of 7 or 8mm sheets, which is screwed, makes to justify blunt portion point beyond outer trepan
Sawtooth is a little (2mm), and articular process bone face is inserted into along seal wire by gag lever post endoporus.It is suitably long a little that opposite direction screws out gag lever post
Degree (is much smaller than according to Radiological measurement safe distance) during beginning, and slow rotation trepan is abraded to articular process bony structure.
Final stage locating rod is screwed out a little, and trepan enters a little, has and stops entrance when falling through sense.Take out trepan and (contain interior saw sending down the fishbone
Block), complete articular process shaping.
The foregoing description to specific illustrative embodiment of the present utility model be in order to illustrate and illustration purpose.These
Description is not wishing to being defined to the utility model into disclosed precise forms, and it will be apparent that according to above-mentioned teaching, can carry out
It is many to change and change.The purpose of selecting and describing the exemplary embodiment is that explaining certain principles of the present utility model
And its practical application, so that those skilled in the art can realize and utilize a variety of examples of the present utility model
Property embodiment and a variety of selections and change.Scope of the present utility model is intended to by claims and its waits similar shape
Formula is limited.
Claims (5)
1. a kind of spacing safe trepan, it is characterised in that including：
Spacing guide rod, the spacing guide rod is provided with inner via hole, and the outer wall of the spacing guide rod is provided with screw thread, and front end is circle obtuse；With
And
Body is sawed, the saw body is in hollow form, and is sheathed on the spacing guide rod, the internal wall of saw is located at the guide rod outer wall spiral shell
The intermeshing screw thread of line, front end is provided with sawtooth；In the state of removing operation consent is carried out, before the spacing guide rod circle obtuse
Sawtooth of the end beyond the saw body front end.
2. spacing safe trepan according to claim 1, it is characterised in that the saw body rear end is provided with handle, the handle
It is fixedly connected with the saw body.
3. spacing safe trepan according to claim 1, it is characterised in that the outer wall of the spacing guide rod is provided with outer spiral shell
Line, the inwall of the saw body is provided with external screw thread.
4. spacing safe trepan according to claim 1, it is characterised in that the spacing guide rod rear end is provided with fixed rotation
Tight nut.
5. spacing safe trepan according to claim 1, it is characterised in that the front end of the spacing guide rod circle obtuse exceeds
The length of the sawtooth of the saw body front end is 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621020750.6U CN206434376U (en) | 2016-08-31 | 2016-08-31 | Spacing safe trepan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621020750.6U CN206434376U (en) | 2016-08-31 | 2016-08-31 | Spacing safe trepan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206434376U true CN206434376U (en) | 2017-08-25 |
Family
ID=59645491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621020750.6U Expired - Fee Related CN206434376U (en) | 2016-08-31 | 2016-08-31 | Spacing safe trepan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206434376U (en) |
-
2016
- 2016-08-31 CN CN201621020750.6U patent/CN206434376U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170825 Termination date: 20190831 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |