CN102188273B - Limit adjusting device - Google Patents
Limit adjusting device Download PDFInfo
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- CN102188273B CN102188273B CN 201010116409 CN201010116409A CN102188273B CN 102188273 B CN102188273 B CN 102188273B CN 201010116409 CN201010116409 CN 201010116409 CN 201010116409 A CN201010116409 A CN 201010116409A CN 102188273 B CN102188273 B CN 102188273B
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- movement
- adjusting
- ring
- sleeve
- adjusting sleeve
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Abstract
The embodiment of the invention discloses a limit adjusting device which comprises a rotator, an adjusting sleeve and a locking mechanism, wherein the adjusting sleeve is sleeved on an adjusted piece and can only move along the axial line of the adjusted piece; one end of the adjusting sleeve is provided with external threads, the rotator is provided with internal threads and sleeved on the adjusting sleeve, and the threads of the adjusting sleeve and the rotator are matched; a drill bit is provided with a limiting device used for limiting the axial line of the rotator to move and an assembling hole used for containing the locking mechanism; the locking mechanism specifically comprises a locking device and an elastic piece, wherein the locking device is arranged at one end of the elastic piece and the locking device and the elastic piece are arranged in the assembling hole; and the rotator is provided with a locking hole which can clamp the locking device. As the limit adjusting device disclosed by the embodiment of the invention is provided with the locking mechanism, when the rotator is rotated and the adjusting sleeve is driven to move, the locking hole of the rotator is rotated to a position close to the locking device, the elastic piece pushes the locking device so that one part of the locking device enters into the locking hole of the rotator for being clamped, furthermore, the adjusting sleeve is locked at the required position for being positioned.
Description
Technical field
The present invention relates to orthopedic instrument limit assembly technical field, more particularly, relate to a kind of means for adjusting limit of movement.
Background technology
In various plastic surgery, be widely used blade plate and bone screw and be used for stablizing, to repair or align and rupture or the bone of pathological changes, and be used for exerting pressure or pulling force to the fusion seam of bone and two or more bone diameters.Screw is suitably located with blade plate and is aimed at and keep the fixing of blade plate and bone can reduce the probability that leads to complications after implantation.
In spinal column, use blade plate to install very carefully.The allowable error of spinal surgery is very little, mainly due to the sensitivity of spinal cord and intrinsic danger when carrying out the aggressive treatment near the spinal cord place.And vertebrae can be very restricted for the size that receives screw.
The drill bit screw tap often is used to make the aligning of bone screw of bone screw locating hole and insertion to be more prone to drilling director when drilling through screw hole, and traditional boring bar tool has the dissimilar degree of depth and limits mechanism and pierce through penetration depth with boring bar tool to limit other similar bones such as drill bit, screw tap.Two kinds of methods that limit drilling depths are arranged at present haply, a kind of adjustable drilling guiding part that comprises wherein, it normally has the pipe fitting of handle, and this pipe fitting is used for receiving the boring bar tool that therefrom passes.Pipe fitting has the position-limit mechanism that can be combined with boring bar tool usually, such as being arranged on the apparent surface that can be in contact with one another on drilling guide and the drill bit, the drilling guide surface can be regulated by thread mechanism or kindred organization usually, thereby can regulate the penetration depth of parts.And the general adjustment structure size of this kind structure is larger, can stop doctor's sight line in operation process.Another traditional mechanism is the tubulose drilling guide with single locating part, and described locating part can interact from different drill bits, and wherein each drill bit is provided with locating part according to preferred drilling depth at diverse location.Will be equipped with so manyly drill bit, and general curative apparatus manufacturer also only is equipped with the several drill bit of regular size, when the doctor needs the drill bit of the unconventional degree of depth, does not often have the drill bit of appropriate depth.
Summary of the invention
In view of this, the invention provides a kind of means for adjusting limit of movement, to realize the position-limiting action to drill bit.
For achieving the above object, the invention provides following technical scheme:
A kind of means for adjusting limit of movement comprises: rotary body, adjusting sleeve and locking mechanism;
Described adjusting sleeve is sleeved on and is transferred on the part, and can only be transferred the part axis to move along this;
Described adjusting sleeve one end is provided with external screw thread, and described rotary body is provided with female thread and is sleeved on the described adjusting sleeve the two threaded engagement;
The described part of being transferred is provided with the described rotary body axis of the restriction stopping means that moves and the pilot hole that holds described locking mechanism;
Described locking mechanism specifically comprises locking device and elastic component, and described locking device is arranged on an end of described elastic component and all places in the described pilot hole;
Described rotary body is provided with the lock hole that can block described locking device.
Preferably, in the above-mentioned means for adjusting limit of movement, described locking mechanism also comprises the plug pin that is arranged on the described elastic component other end, and the diameter of this plug pin is not less than the diameter of described lock hole.
Preferably, in the above-mentioned means for adjusting limit of movement, described adjusting sleeve outer ring is provided with scale.
Preferably, in the above-mentioned means for adjusting limit of movement, described rotary body specifically comprises: locating ring, thread bush and reading ring;
Described locating ring and reading ring are separately fixed at the two ends of described thread bush;
Described thread bush is provided with female thread;
Described groove is arranged on the described locating ring.
Preferably, in the above-mentioned means for adjusting limit of movement, described stopping means is specially baffle ring and interstage sleeve;
Be provided with distance between described interstage sleeve and the described baffle ring, described locating ring is provided with the department of assembly that snaps between described interstage sleeve and the baffle ring, and the width of this department of assembly equals the distance between described interstage sleeve and the baffle ring.
Preferably, in the above-mentioned means for adjusting limit of movement, described locating ring and reading ring are welded on respectively the two ends of described thread bush.
Preferably, in the above-mentioned means for adjusting limit of movement, described baffle ring is welded on described the accent on the part.
Preferably, in the above-mentioned means for adjusting limit of movement, described reading ring is truncated cone-shaped.
Preferably, in the above-mentioned means for adjusting limit of movement, described thread bush outer ring is frosting.
Preferably, in the above-mentioned means for adjusting limit of movement, described adjusting sleeve and described to be transferred the cross section of the mating surface of part be D shape.
Preferably, in the above-mentioned means for adjusting limit of movement, described is drill bit by transferring part.
Can find out from above-mentioned technical scheme, in the embodiment of the invention by locking mechanism is set, so that whenever rotating rotary body and drive adjusting sleeve when moving, when the lock hole of rotary body rotates to the position that approaches with locking device, elastic component can promote locking device, the lock hole that makes the part of locking device enter rotary body reaches screens, makes adjusting sleeve be locked in desired location, realizes the location.If need again regulation depth, then need slightly large moment of torsion rotation rotary body, locking device is squeezed the lock hole that withdraws from locating ring, just can rotate rotary body.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The means for adjusting limit of movement structural representation that Fig. 1 provides for the embodiment of the invention;
The means for adjusting limit of movement partial sectional view that Fig. 2 provides for the embodiment of the invention;
The rotation body structure sketch map that Fig. 3 provides for the embodiment of the invention;
The limit device structure sketch map that Fig. 4 provides for the embodiment of the invention;
The adjusting sleeve structural representation that Fig. 5 provides for the embodiment of the invention;
The means for adjusting limit of movement assembly structure sketch map that Fig. 6 provides for the embodiment of the invention.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
The invention provides a kind of means for adjusting limit of movement, to realize the position-limiting action to drill bit.
See also Fig. 1-6, the means for adjusting limit of movement structural representation that Fig. 1 provides for the embodiment of the invention, the means for adjusting limit of movement partial sectional view that Fig. 2 provides for the embodiment of the invention, the rotation body structure sketch map that Fig. 3 provides for the embodiment of the invention, the limit device structure sketch map that Fig. 4 provides for the embodiment of the invention, the adjusting sleeve structural representation that Fig. 5 provides for the embodiment of the invention, the means for adjusting limit of movement assembly structure sketch map that Fig. 6 provides for the embodiment of the invention.
Wherein, 01 is that drill bit, 02 is that baffle ring, 03 is that locating ring, 04 is that plug pin, 05 is that locking device, 06 is that elastic component, 07 is that thread bush, 08 is that reading ring, 09 is that adjusting sleeve, 10 is that interstage sleeve, 901 is that locating surface, 902 is that D type hole, 903 is that graduation mark, 904 is external screw thread.
Means for adjusting limit of movement disclosed by the invention comprises: rotary body, adjusting sleeve 09 and locking mechanism;
Described adjusting sleeve 09 is sleeved on the drill bit 01, and can only move this drill bit 01 rotation of can not having mercy on along this drill bit 01 axis; These adjusting sleeve 09 1 ends are provided with external screw thread 904, and this rotary body is provided with female thread and is sleeved on the described adjusting sleeve 09 the two threaded engagement; Drill bit 01 is provided with and limits the stopping means that this rotary body axis moves and hold turning of described locking mechanism and join the hole; Locking mechanism comprises that specifically (locking device that the embodiment of the invention provides is steel ball to locking device 05, it will be understood by those skilled in the art that this locking device is not to only have spheroplast a kind of, as long as can guarantee to be stuck in the groove of rotary body interior) and elastic component 06, the end that described locking device 05 is arranged on described elastic component 06 also all places in the described pilot hole; Described rotary body is provided with the lock hole that can block described locking device.
In sum, in the embodiment of the invention by locking mechanism is set, so that whenever rotating rotary body and drive adjusting sleeve 09 when moving, when the lock hole of rotary body rotates to the position that approaches with locking device 05, elastic component 06 can promote locking device 05, the lock hole that makes the part of locking device 05 enter rotary body reaches screens, makes adjusting sleeve 09 be locked in desired location, realizes the location.If need again regulation depth, then need slightly large moment of torsion rotation rotary body, locking device 05 is squeezed the lock hole that withdraws from locating ring, just can rotate rotary body.
Further, in order to improve the locating effect of above-mentioned means for adjusting limit of movement, locking mechanism also comprises the plug pin 04 that is arranged on elastic component 06 other end, and the diameter of this plug pin 04 is not less than the diameter of lock hole on the rotary body, so that when lock hole rotates to plug pin 04 position on rotary body, plug pin 04 is unlikely to skid off from this lock hole.In addition, the lock hole place is provided with chamfering, is convenient to entering and withdrawing from of locking device 05.
Adjusting sleeve 09 outer ring is provided with graduation mark 903, so that read the regulation depth of drill bit 01, adjusting sleeve 09 inner surface is D type hole 902 (adjusting sleeve 09 inner surface also can be the hole of other shapes, rotatablely moves as long as can limit this adjusting sleeve 09) in addition.This structure is in order to limit rotatablely moving of adjusting sleeve 09, it will be appreciated by those skilled in the art that it is also can projection be set at drill bit 01, think suitable groove what adjusting sleeve 09 arranged that axis direction has a certain-length with this projection, limit the rotation of adjusting sleeve 09 by the design of groove and projection, also have other ways to restrain in the prior art, do not repeat them here.
Rotary body specifically comprises: locating ring 03, thread bush 07 and reading ring 08, described locating ring 03 and reading ring 08 are fixedly installed respectively (it will be understood by those skilled in the art that to be fixedly installed and can be preferably welding) herein at the two ends of described thread bush 07, and this thread bush 07 is provided with female thread; Described lock hole is arranged on the described locating ring 03.Reading ring 08 is truncated cone-shaped, and the end that diameter is larger is welded on the thread bush 07, so that read the scale on the adjusting sleeve 09.
Stopping means is specially baffle ring 02 and interstage sleeve 10, baffle ring 02 is welded on the drill bit 01, be provided with distance between described interstage sleeve 10 and the described baffle ring 02, described locating ring 03 is provided with the department of assembly that snaps between described interstage sleeve 10 and the baffle ring 02, and the width of this department of assembly equals the distance between described interstage sleeve 10 and the baffle ring 02, thereby moving axially of restricting rotation body guarantees that it can only rotate.This structure is rotatablely moving for the restricting rotation body, it will be appreciated by those skilled in the art that it is also can be by at locating ring 03 protruding ring that keeps at a certain distance away being set, at drill bit 01 interstage sleeve is set, the width of this interstage sleeve is the distance between two protruding rings on the locating ring 03.Also have other ways to restrain in the prior art, do not repeat them here.
Further, in order to optimize said apparatus, thread bush 07 outer ring is frosting, makes it have certain frictional force, guarantees better to rotate this thread bush 07.
In sum, the present invention drives the movement vertically of location graduation chi by the rotary body that rotation locating ring 03, thread bush 07 and reading ring 08 are welded into, and reaches the effect of adjustable limiting.
Whenever rotating rotary body, and when driving adjusting sleeve 09 and moving, when the lock hole of locating ring 03 rotates to the position that approaches with locking device 05, elastic component 06 can promote locking device 05, make the part of locking device 05 enter the lock hole of locating ring 03, and can send " Ka Ta " sound, and reach screens, make the locating surface 901 of adjusting sleeve 09 be locked in desired location.Scale on the adjusting sleeve 09 that the edge of reading ring 08 is corresponding at this moment is exactly the degree of depth that drill bit or screw tap pierce, convenient reading.If need again regulation depth, then need slightly large moment of torsion rotation rotary body, locking device 05 is squeezed the lock hole that withdraws from locating ring 03, just can rotate rotary body.Because the lock hole of locating ring 03 is provided with enough chamferings and the rational degree of depth, is convenient to entering and withdrawing from of locking device 05, and can keep enough locking (enough coupling mechanism forces need cooperate realization with elastic component 06).
Rotary body whenever rotates a circle, the flexible certain distance of adjusting sleeve 09 meeting, and locking device 05 just can enter lock hole once, finishes the location and regulates.Positioning accuracy is only relevant with the precision of matching thread like this, can reach+/-0.1mm, cooperating to get out with the guide of special use needs degree of depth hole.
The maximum gauge of the adjustable limiting device of this structure also only has 11mm, and similar products then generally need reach 13mm.Outside dimension is less, and then in operation technique, the probability that the doctor visual field is stopped is less.
It will be appreciated by persons skilled in the art that except drill bit the present invention also is applicable to other field, such as the parts of the need adjustings such as screw tap.
Each embodiment adopts the mode of going forward one by one to describe in this description, and what each embodiment stressed is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can in the situation that does not break away from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (12)
1. a means for adjusting limit of movement is characterized in that, comprising: rotary body, adjusting sleeve and locking mechanism;
Described adjusting sleeve is sleeved on and is transferred on the part, and can only be transferred the part axis to move along this;
Described adjusting sleeve one end is provided with external screw thread, and described rotary body is provided with female thread and is sleeved on the described adjusting sleeve the two threaded engagement;
The described part of being transferred is provided with the described rotary body axis of the restriction stopping means that moves and the pilot hole that holds described locking mechanism;
Described locking mechanism specifically comprises locking device and elastic component, and described locking device is arranged on an end of described elastic component and all places in the described pilot hole;
Described rotary body is provided with the lock hole that can block described locking device.
2. means for adjusting limit of movement as claimed in claim 1 is characterized in that, described locking mechanism also comprises the plug pin that is arranged on the described elastic component other end, and the diameter of this plug pin is not less than the diameter of described lock hole.
3. means for adjusting limit of movement as claimed in claim 1 is characterized in that, described adjusting sleeve outer ring is provided with scale.
4. means for adjusting limit of movement as claimed in claim 3 is characterized in that, described rotary body specifically comprises: locating ring, thread bush and reading ring;
Described locating ring and reading ring are separately fixed at the two ends of described thread bush;
Described thread bush is provided with described female thread;
Described lock hole is arranged on the described locating ring.
5. means for adjusting limit of movement as claimed in claim 4 is characterized in that, described stopping means is specially baffle ring and interstage sleeve;
Be provided with distance between described interstage sleeve and the described baffle ring, described locating ring is provided with the department of assembly that snaps between described interstage sleeve and the baffle ring, and the width of this department of assembly equals the distance between described interstage sleeve and the baffle ring.
6. means for adjusting limit of movement as claimed in claim 4 is characterized in that, described locating ring and reading ring are welded on respectively the two ends of described thread bush.
7. means for adjusting limit of movement as claimed in claim 5 is characterized in that, described baffle ring is welded on described the accent on the part.
8. means for adjusting limit of movement as claimed in claim 4 is characterized in that, described reading ring is truncated cone-shaped.
9. means for adjusting limit of movement as claimed in claim 4 is characterized in that, described thread bush outer ring is frosting.
10. means for adjusting limit of movement as claimed in claim 1 is characterized in that, described adjusting sleeve and described to be transferred the cross section of the mating surface of part be D shape.
11. means for adjusting limit of movement as claimed in claim 1 is characterized in that, described lock hole is provided with chamfering.
12. means for adjusting limit of movement as claimed in claim 1 is characterized in that, described is drill bit by transferring part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010116409 CN102188273B (en) | 2010-03-02 | 2010-03-02 | Limit adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010116409 CN102188273B (en) | 2010-03-02 | 2010-03-02 | Limit adjusting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102188273A CN102188273A (en) | 2011-09-21 |
| CN102188273B true CN102188273B (en) | 2013-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010116409 Expired - Fee Related CN102188273B (en) | 2010-03-02 | 2010-03-02 | Limit adjusting device |
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| Country | Link |
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| CN (1) | CN102188273B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102895014A (en) * | 2012-10-16 | 2013-01-30 | 宫锡和 | Drill depth controller |
| CN115363684A (en) * | 2017-03-31 | 2022-11-22 | 重庆西山科技股份有限公司 | Ultrasonic bone drill and ultrasonic bone knife system |
| CN107007364B (en) * | 2017-05-17 | 2019-12-06 | 四川大学华西医院 | Spine minimally invasive surgery instrument depth limiting device |
| CN110870786A (en) * | 2018-09-04 | 2020-03-10 | 苏州微创关节医疗科技有限公司 | Tibial osteotomy block locking instrument |
| CN109925022A (en) * | 2019-03-11 | 2019-06-25 | 北京积水潭医院 | Medical electric drill |
| CN114052941B (en) * | 2022-01-17 | 2022-04-26 | 珠海维尔康生物科技有限公司 | Visual mold testing tool capable of being unfolded |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4620539A (en) * | 1983-07-11 | 1986-11-04 | Andrews E Trent | Pistol grip, bone drill |
| CN1261773A (en) * | 1997-07-01 | 2000-08-02 | 库尔斯恩蒂斯股份公司 | Freely separable surgical drill guide and plate |
| CN1984610A (en) * | 2004-03-30 | 2007-06-20 | 新特斯(美国)公司 | Adjustable depth drill bit |
| CN101005808A (en) * | 2004-04-12 | 2007-07-25 | 新特斯有限责任公司 | Free hand drill guide |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1960680B (en) * | 2004-02-20 | 2010-09-08 | 赫克托·O·帕切科 | Method for determining size and placement of pedicle screw in spinal surgery |
-
2010
- 2010-03-02 CN CN 201010116409 patent/CN102188273B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4620539A (en) * | 1983-07-11 | 1986-11-04 | Andrews E Trent | Pistol grip, bone drill |
| CN1261773A (en) * | 1997-07-01 | 2000-08-02 | 库尔斯恩蒂斯股份公司 | Freely separable surgical drill guide and plate |
| CN1984610A (en) * | 2004-03-30 | 2007-06-20 | 新特斯(美国)公司 | Adjustable depth drill bit |
| CN101005808A (en) * | 2004-04-12 | 2007-07-25 | 新特斯有限责任公司 | Free hand drill guide |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102188273A (en) | 2011-09-21 |
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Granted publication date: 20130327 Termination date: 20180302 |