CN209074720U - A kind of jaw bone tractor of self-locking function - Google Patents
A kind of jaw bone tractor of self-locking function Download PDFInfo
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- CN209074720U CN209074720U CN201820797084.XU CN201820797084U CN209074720U CN 209074720 U CN209074720 U CN 209074720U CN 201820797084 U CN201820797084 U CN 201820797084U CN 209074720 U CN209074720 U CN 209074720U
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Abstract
The utility model relates to a kind of jaw bone tractors of self-locking function, it is characterised in that: the hitch frame including being provided with guiding groove；The first plug equipped with accommodating cavity, is fixed on the rear end in guiding groove；Fixed traction plate is fixed on hitch frame, the first mounting hole is provided on fixed traction plate；Second plug is fixed on the front end in guiding groove；It is provided with the movable pulling seat of tapped through hole, is constrained in guiding groove；It is provided with the movable towing plate of the second mounting hole, is fixed on movable pulling seat；Screw rod with first annular shoulder block is set in guiding groove and can be inserted into accommodating cavity around rotation, the back end activity of screw rod, and screw rod is passed through and is threaded in tapped through hole；Self-locking spring in accommodating cavity and acts on the rear end face of screw rod, and makes screw rod keep moving forward and then the first annular shoulder block is made to compress the second plug inner face trend.Its screw rod in Distraction Osteogenesis is not susceptible to rotation.
Description
Technical field
The utility model belongs to the technical field of the medical instrument for oral cavity, Jaw surgery and plastic surgery operations, especially
It is related to a kind of jaw bone tractor of self-locking function.
Background technique
There is special tractor for jawbone at present, is widely used in oral and maxillofacial surgery or head surgery and plastic surgery hand
In art, the technical principle of this tractor be may be summarized to be: first cut jawbone around soft tissue, by mandibular it is completely cut off or
Not exclusively after truncation, gradually being strutted bone stump with external force makes to form gap, and the skeletonization energy of jawbone itself is induced using tractive force
Power and form new bone persistently to fill this gap, achieve the purpose that extend mandibular.The technology utilizes body tissue regeneration potential,
Bone defect or defects caused by reason various congenital or day after tomorrow can be repaired.
Such as a kind of Chinese utility model patent " jawbone of Patent No. ZL95200175.6 (notification number CN2205709Y)
Pull extender ", " jawbone is led for the Chinese utility model patent of Patent No. ZL98225259.5 (notification number CN2341572Y)
Lead device ", the Chinese utility model patent of Patent No. ZL99234512.X (notification number CN2378010Y) is " under oral cavity is built-in
Jaw distraction extender ", they disclose the identical jaw bone tractor of working principle.It is all made of transmission of the screw rod as traction
Component drives screw rod rotation by rotation regulation handle when operation, and then drive activity towing plate is mobile.
Existing jaw bone tractor has the following defects, and because regulation handle is exposed, and after traction, distracted jawbone is certainly
Body has certain restoring force, if the external world accidentally touches driving handle, or vibration influences, and screw rod is caused to generate towards the side loosened
To deflection, the general jawbone that draws all uses two tractors to draw together, if the distracted position of one of tractor becomes
Change, will lead to that Jaw distraction is uneven, the gap between knochenbruch shifts, and finally makes the new bone formation sawtooth generated, seriously
Influence surgical quality.
How to guarantee tractor in use thus, it is that those skilled in the art need to solve that screw rod, which is not susceptible to rotation,
One of certainly the technical issues of.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of be distracted into for above-mentioned state of the art
Screw rod is not susceptible to the jaw bone tractor with self-locking function of rotation during bone, simple, the secured adjusted side with structure
Just, accurate advantage is adjusted.
Technical solution adopted by the utility model to solve the above technical problems is as follows: a kind of Jaw distraction of self-locking function
Device, it is characterised in that: including hitch frame, be provided with the guiding groove being arranged along its length thereon；First plug, is fixed on guiding groove
Interior rear end, the first plug is interior to be equipped with accommodating cavity of the opening towards guiding groove；Fixed traction plate is fixed on the hitch frame or
On one plug, multiple the first mounting holes worn for tapping screw are provided on fixed traction plate；Second plug, is fixed on guiding groove
Interior front end；Movable pulling seat constrains in the guiding groove and can axially slide, and is provided with and axially penetrates through on movable pulling seat
Tapped through hole；Movable towing plate, is fixed on movable pulling seat, and multiple worn for tapping screw are provided on movable towing plate
Two mounting holes；Screw rod is set in guiding groove and can rotate around own axes, and the back end activity of screw rod is inserted into accommodating cavity, screw rod
Front, which has, keeps off the first annular shoulder block matched with the second plug, and the front end of screw rod is formed and regulation handle company after being pierced by the second plug
The driving end connect, meanwhile, screw rod is passed through and is threaded in the tapped through hole on the movable pulling seat；Self-locking spring, if
In in accommodating cavity and acting on the rear end face of screw rod, and makes screw rod keep moving forward and then make described in the first annular shoulder block compresses
Second plug inner face trend.
Preferably, above-mentioned guiding groove is made of the round groove portion and superposed bar shaped groove portion for being located at lower part, bar shaped
Groove portion is communicated with round groove portion, and the radial maximum width of round groove portion is greater than the width of bar shaped groove portion；The movable pulling seat
Lower part the cylindrical portion that there is shape and round groove portion to match, the tapped through hole is arranged in the cylindrical portion, movable pulling seat
Middle part the guide portion that there is shape and bar shaped groove portion to match, the lower end surface of movable pulling seat is then shelved on hitch frame upper surface
On.Because the radial maximum width of round groove portion is greater than the width of bar shaped groove portion, it is ensured that can be by the cylindrical portion of movable pulling seat lower part
It constrains in round groove portion and is only capable of front and back sliding, can more precisely adjust hauling distance in this way.
For convenience of movable towing plate to be accurately fixed on movable pulling seat, have in the middle part of the upper surface of above-mentioned movable pulling seat
There is the fixed column to raise upward, the fixation hole for the fixed column inserting is provided on the activity towing plate；The activity traction
The upper surface front and rear sides of seat have the inserted block to raise upward, and the front and rear sides of the activity towing plate are provided with inserts for the inserted block
The slot matched.By the location fit of fixed column and fixation hole and inserted block and slot, connect movable pulling seat and movable towing plate
Order level is true, then is fixed the two by welding.
The joint bar that there is downwardly convex and shape and bar shaped groove portion to match for the lower end surface of above-mentioned fixed traction plate, the joint bar are inserted
It is located in bar shaped groove portion and is welded and fixed again with first plug.By the location fit of joint bar and bar shaped groove portion, lead fixation
Corbel back slab and hitch frame fixation are more accurate.
Because jaw bone tractor using when be mounted in oral cavity, to prevent hitch frame sliding injury oral mucosa, above-mentioned hitch frame
Lower end surface is arc-shaped.
As an improvement, the rear portion of above-mentioned screw rod has the second annular shoulder block matched with the first plug gear, prevent screw rod excessive
Accommodating cavity is protruded into squeeze spring.
It is connect for convenience of screw rod with regulation handle, the cross section at above-mentioned driving end is polygon, and the regulation handle is band
Turn to the spanner of connector.Regulation handle can rotate in this way, be conducive to operation regulation handle.
Preferably, above-mentioned first mounting hole and the second mounting hole are stepped hole, and the big hole portion of stepped hole is taper
Hole.It is not exposed in the big hole portion of mounting hole that the mounting hole can be such that the head of Titanium Alloy Screw is hidden in, and prevents because mounting screw is exposed
Sliding injury oral mucosa.
Alternatively, the fixed arm of L-shaped first is all had at left and right sides of above-mentioned fixed traction plate, each first is fixed
It is set on arm there are three first mounting hole, the middle part of fixed traction plate has outwardly extending intermediate arm, intermediate arm
It is equipped with two first mounting holes；The movable arm of L-shaped first is all had at left and right sides of the activity towing plate, respectively
Second mounting hole there are three being set on first movable arm.
Compared with the prior art, the advantages of the utility model are: in use, need to only be cut in corresponding jawbone soft tissue small
Fixed traction plate is fixed on the jawbone of notch side by road openning, then movable towing plate is fixed on to the jaw of the notch other side
On bone, when adjusting, rotate screw rod, working principle adjusted according to the threaded connection of screw rod and threaded hole, force movable towing plate and
Movable pulling seat slides with respect to screw rod upward or downward together, generates gap, and the skeletonization energy of jawbone itself is induced using tractive force
Power and form new bone persistently to fill this gap, the screw-driven of screw rod and threaded hole can accurately and slowly adjust hauling distance,
Just entire tractor can be disassembled after fixed traction plate and movable towing plate need to only be unloaded after the completion of adjusting, then again to jaw
The bone surface of a wound is handled, while adjustment process is simple and convenient, in addition the structure of this tractor few, the mutual alignment that is related to component
And assembly relation is simple.Particular, it is important that self-locking spring acts on the rear end face of screw rod, and makes screw rod keep moving forward and then make
First annular shoulder block compresses the second plug inner face trend, screw rod is formed it is self-locking, even if external force accidentally touches driving
The spontaneous restoring force of jawbone after handle, or have and definitely vibrate, and traction, will not be such that screw rod generates towards the side loosened
To deflection, it is ensured that fixed traction plate and movable towing plate remain in place, guarantee that the new bone generated is smooth, operation
Quality is good.
Detailed description of the invention
Fig. 1 is the schematic perspective view of the utility model embodiment；
Fig. 2 is the cross-sectional view of the utility model embodiment；
Fig. 3 is the A-A direction view of Fig. 2；
Fig. 4 is the B-B direction cross-sectional view of Fig. 2；
Fig. 5 is the stereogram exploded view of the utility model embodiment.
Specific embodiment
The utility model is described in further detail below in conjunction with figure embodiment.
It is the preferred embodiment of the utility model as shown in Fig. 1~5.
The lower end surface 12 of a kind of jaw bone tractor of self-locking function, including hitch frame 1, hitch frame 1 is arc-shaped.It is provided with thereon
The guiding groove 11 being arranged along its length, guiding groove 11, which axially penetrates through, to be arranged so that it is convenient to process.Guiding groove 11 is by being located at lower part
Round groove portion 111 and superposed bar shaped groove portion 112 composition, bar shaped groove portion 112 communicated with round groove portion 111, and circle
The radial maximum width of groove portion 111 is greater than the width of bar shaped groove portion 112.
First plug 2 is weldingly fixed on the rear end in guiding groove 11, and the open rearward end of guiding groove 11 is covered, first
Accommodating cavity 21 of the opening towards guiding groove 11 is equipped in plug 2.
Fixed traction plate 3 is weldingly fixed on hitch frame 1 or the first plug 2, multiple be provided from is provided on fixed traction plate 3
Attack the first mounting hole 31 that screw is worn；The lower end surface of fixed traction plate 3 has downwardly convex and shape and bar shaped groove portion 112
The joint bar 32 of matching, which is plugged in bar shaped groove portion 112 is welded and fixed with first plug 2 again.First mounting hole
31 be stepped hole, and the big hole portion of stepped hole is bellmouth, and tapping screw is diameter 2.0mm Titanium Alloy Screw.Fixed traction plate 3
The left and right sides all have the L-shaped first fixed arm 33, set that there are three first installations on each first fixed arm 33
Hole 31, the middle part of fixed traction plate 3 have outwardly extending intermediate arm 34, and intermediate arm 34 is equipped with two first installations
Hole 31.
Second plug 4 is weldingly fixed on the front end in guiding groove 11, and the front opening of guiding groove 11 is covered, second
It is provided on plug 4 and is pierced by for following screw rods 7.
Movable pulling seat 5 is constrained in the guiding groove 11 and can axially be slid, and axial pass through is provided on movable pulling seat 5
The tapped through hole 511 worn；The cylindrical portion 51 that there is shape and round groove portion 111 to match for the lower part of movable pulling seat 5, tapped through hole
511 are arranged in the cylindrical portion 51, the guide portion 52 that there is shape and bar shaped groove portion 112 to match at the middle part of movable pulling seat 5, living
The lower end surface of dynamic traction seat 5 is then shelved on 1 upper surface of hitch frame.
Movable towing plate 6, is weldingly fixed on movable pulling seat 5, is provided with and multiple wears on movable towing plate 6 for tapping screw
If the second mounting hole 61；Second mounting hole 61 is stepped hole, and the big hole portion of stepped hole is bellmouth.Movable towing plate 6
The left and right sides all have the L-shaped first movable arm 64, set that there are three the second mounting holes 61 on each first movable arm 64.
There is the fixed column 53 to raise upward in the middle part of the upper surface of movable pulling seat 5, be provided on movable towing plate 6 for the fixed column 53
The fixation hole 62 of inserting；The upper surface front and rear sides of movable pulling seat 5 have the inserted block 54 to raise upward, movable towing plate 6
Front and rear sides are provided with the slot 63 for 54 inserting of inserted block.
Screw rod 7 is set in guiding groove 11 and can rotate around own axes, and the back end activity of screw rod 7 is inserted into accommodating cavity 21, spiral shell
The front of bar 7, which has, keeps off the first annular shoulder block 71 matched with the second plug 4, and the rear portion of screw rod 7 has matches with the first plug 2 gear
The second annular shoulder block 72, the front end of screw rod 7 forms the driving end 73 connecting with regulation handle 9 after being pierced by the second plug 4, together
When, screw rod 7 passes through and in the tapped through hole 511 that is threaded on movable pulling seat 5；The screw rod hauling distance that often rotates a circle is
0.4mm.The cross section for driving end 73 is polygon, and the regulation handle 9 is with the spanner for turning to connector 91.
Self-locking spring 8 in accommodating cavity 21 and acts on the rear end face of screw rod 7, and makes screw rod 7 keep moving forward and then make
The first annular shoulder block 71 compresses 4 inner face trend of the second plug.
Movable towing plate 3 and fixed traction plate 6 should use pure titanium TA3 material in the present embodiment, and other components are closed using titanium
Golden TC4 material.Hardness >=260HV10 of titanium alloy, hardness >=150HV10 of pure titanium, self-locking spring 8 are stainless steel material system
At.
In use, select the model of suitable jaw bone tractor and determine tractor installation site, it only need to be in corresponding jawbone
Soft tissue cuts trail openning, fixed traction plate 3 is fixed on the jawbone of notch side, then movable towing plate 6 is fixed on
On the jawbone of the notch other side, when adjusting, the small outer-hexagonal on the interior hexagonal insertion screw rod 7 of regulation handle 9 is driven into end 72, is pressed
It is rotated clockwise regulation handle 9 (direction indicated by handle upward arrow), drives screw rod 7 to rotate, according to screw rod 7 and screw thread
The threaded connection in hole 511 adjusts working principle, force movable towing plate 6 and movable pulling seat 5 together with respect to screw rod 4 forward or to
After slide, screw rod 4 for each revolution hauling distance be 0.4mm, generate gap, utilize tractive force induce jawbone itself skeletonization energy
Power and form new bone persistently to fill this gap, the screw-driven of screw rod 4 and threaded hole 511 can accurately and slowly adjust traction away from
From, after reaching clinical desired effect, stopping traction.Last need to only unload after fixed traction plate 3 and movable towing plate 6 just can will be whole
A tractor disassembles, and then handles again the jawbone surface of a wound, while adjustment process is simple and convenient, in addition this traction
The structure of device is related to that component is few, and mutual alignment and assembly relation are simple, its overall dimensions can be made small.
In osteogenetic process, self-locking spring 8 acts on the rear end face of screw rod 7, and makes screw rod 7 keep moving forward and then make first
Annular shoulder block 71 compresses 4 inner face trend of the second plug, self-locking (screw rod 7 is not easy rotation) is formed to screw rod 7, even if external force is not small
The heart encounters driving regulation handle 9, or has and definitely vibrate, and the restoring force that the jawbone after traction is spontaneous, will not make spiral shell
Bar 7 is generated towards the direction deflection loosened, it is ensured that fixed traction plate 3 and movable towing plate 6 remain in place, guarantee
The new bone generated is smooth, and surgical quality is good.
Although the preferred embodiments of the utility model have been described above in detail, it is to be clearly understood that for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within any modification, equivalent replacement, improvement and so on, should be included within the scope of protection of this utility model.
Claims (9)
1. a kind of jaw bone tractor of self-locking function, it is characterised in that: including
Hitch frame (1) is provided with the guiding groove (11) being arranged along its length thereon；
First plug (2) is fixed on the rear end in guiding groove (11), and opening is equipped in the first plug (2) towards guiding groove (11)
Accommodating cavity (21)；
Fixed traction plate (3) is fixed on the hitch frame (1) or the first plug (2), is provided on fixed traction plate (3) multiple
The first mounting hole (31) worn for tapping screw；
Second plug (4) is fixed on the front end in guiding groove (11)；
Movable pulling seat (5) is constrained in the guiding groove (11) and can axially be slid, and movable pulling seat is provided with axial direction on (5)
Perforative tapped through hole (511)；
Movable towing plate (6), is fixed on movable pulling seat (5), is provided with and multiple wears on movable towing plate (6) for tapping screw
The second mounting hole (61)；
Screw rod (7) is set in guiding groove (11) and can rotate around own axes, and the back end activity of screw rod (7) is inserted into accommodating cavity
(21), the front of screw rod (7), which has, keeps off the first annular shoulder block (71) matched with the second plug (4), and the front end of screw rod (7) is pierced by the
Two plugs (4) form the driving end (73) connecting with regulation handle (9) afterwards, meanwhile, screw rod (7) is passed through and is threaded in described
In tapped through hole (511) on movable pulling seat (5)；
Self-locking spring (8) is set in accommodating cavity (21) and acts on the rear end faces of screw rod (7), and make screw rod (7) keep moving forward into
And the first annular shoulder block (71) is made to compress the second plug (4) inner face trend.
2. the jaw bone tractor of self-locking function according to claim 1, it is characterised in that: under the guiding groove (11) is by being located at
The round groove portion (111) and superposed bar shaped groove portion (112) in portion form, bar shaped groove portion (112) and round groove portion (111) phase
It is logical, and the radial maximum width of round groove portion (111) is greater than the width of bar shaped groove portion (112)；Under the movable pulling seat (5)
The cylindrical portion (51) that there is shape and round groove portion (111) to match in portion, the tapped through hole (511) are arranged in the cylindrical portion (51)
On, the guide portion (52) that there is shape and bar shaped groove portion (112) to match at the middle part of movable pulling seat (5), movable pulling seat (5)
Lower end surface is then shelved on hitch frame (1) upper surface.
3. the jaw bone tractor of self-locking function according to claim 2, it is characterised in that: the movable pulling seat (5) it is upper
There is the fixed column (53) to raise upward in the middle part of end face, be provided on the activity towing plate (6) for the fixed column (53) inserting
Fixation hole (62)；The upper surface front and rear sides of the movable pulling seat (5) have the inserted block (54) to raise upward, the activity
The front and rear sides of towing plate (6) are provided with the slot (63) for the inserted block (54) inserting.
4. the jaw bone tractor of self-locking function according to claim 3, it is characterised in that: under the fixed traction plate (3)
The joint bar (32) that there is downwardly convex and shape and bar shaped groove portion (112) to match for end face, the joint bar (32) are plugged in bar shaped groove portion
(112) it is welded and fixed again with first plug (2) in.
5. the jaw bone tractor of self-locking function according to claim 1, it is characterised in that: the lower end surface of the hitch frame (1)
(12) arc-shaped.
6. the jaw bone tractor of self-locking function according to claim 1, it is characterised in that: the rear portion of the screw rod (7) has
The the second annular shoulder block (72) matched with the first plug (2) gear.
7. the jaw bone tractor of self-locking function according to claim 1, it is characterised in that: the cross section of driving end (73)
For polygon, the regulation handle (9) is with the spanner for turning to connector (91).
8. the jaw bone tractor of self-locking function according to claim 1, it is characterised in that: first mounting hole (31) and
Two mounting holes (61) are stepped hole, and the big hole portion of stepped hole is bellmouth.
9. the jaw bone tractor of self-locking function according to claim 1, it is characterised in that: a left side for the fixed traction plate (3)
Right two sides all have L-shaped first fixed arm (33), set that there are three first installations on each first fixed arm (33)
Hole (31), the middle part of fixed traction plate (3) have outwardly extending intermediate arm (34), and intermediate arm (34) is equipped with two institutes
State the first mounting hole (31)；The movable arm (64) of L-shaped first is all had at left and right sides of the activity towing plate (6), respectively
Second mounting hole (61) there are three being set on first movable arm (64).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820797084.XU CN209074720U (en) | 2018-05-25 | 2018-05-25 | A kind of jaw bone tractor of self-locking function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820797084.XU CN209074720U (en) | 2018-05-25 | 2018-05-25 | A kind of jaw bone tractor of self-locking function |
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| Publication Number | Publication Date |
|---|---|
| CN209074720U true CN209074720U (en) | 2019-07-09 |
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ID=67112730
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820797084.XU Active CN209074720U (en) | 2018-05-25 | 2018-05-25 | A kind of jaw bone tractor of self-locking function |
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| CN (1) | CN209074720U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109567883A (en) * | 2018-05-25 | 2019-04-05 | 宁波慈北医疗器械有限公司 | A kind of jaw bone tractor of self-locking function |
-
2018
- 2018-05-25 CN CN201820797084.XU patent/CN209074720U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109567883A (en) * | 2018-05-25 | 2019-04-05 | 宁波慈北医疗器械有限公司 | A kind of jaw bone tractor of self-locking function |
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