CN102188273A - Limit adjusting device - Google Patents
Limit adjusting device Download PDFInfo
- Publication number
- CN102188273A CN102188273A CN2010101164091A CN201010116409A CN102188273A CN 102188273 A CN102188273 A CN 102188273A CN 2010101164091 A CN2010101164091 A CN 2010101164091A CN 201010116409 A CN201010116409 A CN 201010116409A CN 102188273 A CN102188273 A CN 102188273A
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- movement
- ring
- adjusting limit
- locking device
- rotary body
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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 extensive use of blade plate and bone screw and be used to stablize, repair or align and rupture or the bone of pathological changes, and be used to exert 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 very to install carefully.The allowable error of spinal surgery is very little, mainly due to the sensitivity and the inherent danger of spinal cord 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 the aligning of bone screw that makes bone screw locating hole and insertion with drilling director and is more prone to 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, wherein a kind ofly comprise adjustable drilling guide, it normally has the pipe fitting of handle, and this pipe fitting is used to receive the boring bar tool that therefrom passes.Pipe fitting have usually can with the bonded position-limit mechanism of boring bar tool, 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 degree of depth that enters of parts.And the general adjustment structure size of this kind structure is bigger, 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 with 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 manyly drill bit like this, 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 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, adjustment cover and locking mechanism;
Described adjustment cover is sleeved on and is transferred on the part, and can only be transferred the part axis to move along this;
Described adjustment is overlapped an end and is provided with external screw thread, and described rotary body is provided with female thread and is sleeved on described adjustment and puts the two threaded engagement;
The described part of being transferred is provided with the described rotary body axis of 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 adjustment cover 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 the two ends of described thread bush respectively.
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 a truncated cone-shaped.
Preferably, in the above-mentioned means for adjusting limit of movement, described thread bush outer ring is a frosting.
Preferably, in the above-mentioned means for adjusting limit of movement, described adjustment cover and described cross section by the mating surface of accent part are D shape.
Preferably, in the above-mentioned means for adjusting limit of movement, described is drill bit by transferring part.
From above-mentioned technical scheme as can be seen, in the embodiment of the invention by locking mechanism is set, make when also driving adjustment cover is mobile whenever the rotation rotary body, when the lock hole of rotary body rotates to the approaching position of locking device, elastic component can promote locking device, the lock hole that makes the part of locking device enter rotary body reaches screens, makes to adjust cover and be locked in desired location, realizes the location.If need regulate the degree of depth once more, then need big slightly 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, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
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 stopping means structural representation that Fig. 4 provides for the embodiment of the invention;
The adjustment nested structure sketch map 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 is obtained under the creative work prerequisite.
The invention provides a kind of means for adjusting limit of movement, to realize 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 stopping means structural representation that Fig. 4 provides for the embodiment of the invention, the adjustment nested structure sketch map 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 for D type hole, 903 for graduation mark, 904 is external screw thread for locating surface, 902 for adjusting cover, 10 for interstage sleeve, 901 for reading ring, 09 for thread bush, 08 for elastic component, 07 for locking device, 06 for plug pin, 05 for locating ring, 04 for baffle ring, 03.
Means for adjusting limit of movement disclosed by the invention comprises: rotary body, adjustment cover 09 and locking mechanism;
Described adjustment cover 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 adjustment cover 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 adjustment cover 09 the two threaded engagement; Drill bit 01 is provided with the commentaries on classics that limits the stopping means that this rotary body axis moves and hold described locking mechanism and joins the hole; Locking mechanism comprises that specifically (locking device that the embodiment of the invention provides is a steel ball to locking device 05, it will be understood by those skilled in the art that this locking device is not to have only 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, make when also driving adjustment cover 09 moves whenever the rotation rotary body, when the lock hole of rotary body rotates to the approaching position of 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 to adjust cover 09 and be locked in desired location, realizes the location.If need regulate the degree of depth once more, then need big slightly 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 rotated to plug pin 04 position on rotary body, plug pin 04 was 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.
Adjust cover 09 outer ring and be provided with graduation mark 903, so that read the adjusting degree of depth of drill bit 01, adjusting cover 09 inner surface in addition is D type hole 902 (adjust cover 09 inner surface and also can be the hole of other shapes, rotatablely move as long as can limit this adjustment cover 09).This structure is to adjust rotatablely moving of cover 09 in order to limit, it will be appreciated by those skilled in the art that it is also can on drill bit 01, projection be set, adjust be provided with on the cover 09 certain-length arranged on the axis direction think suitable groove with this projection, design by groove and projection limits the rotation of adjusting cover 09, 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 fixedly install (it will be understood by those skilled in the art that to fixedly install and can be preferably welding) respectively 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 a truncated cone-shaped, and the end that diameter is bigger is welded on the thread bush 07, so that read the scale of adjusting on the cover 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 restriction rotary body guarantees that it can only rotate.This structure is in order to limit rotatablely moving of rotary body, it will be appreciated by those skilled in the art that it is also can be by the protruding ring that keeps at a certain distance away is set on locating ring 03, an interstage sleeve is set on drill bit 01, and 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 a frosting, makes it have certain frictional force, guarantees better to rotate this thread bush 07.
In sum, the present invention is by the rotary body that rotation locating ring 03, thread bush 07 and reading ring 08 are welded into, and drives location rule moving vertically, reaches the effect of adjustable limiting.
Whenever rotating rotary body, and when drive adjusting cover 09 and moving, when the lock hole of locating ring 03 rotates to the approaching position of 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 cover 09 be locked in desired location.Scale on the adjustment of the edge correspondence of reading ring 08 cover 09 is exactly the degree of depth that drill bit or screw tap pierce at this moment, convenient reading.If need regulate the degree of depth once more, then need big slightly 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 the 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, and adjusts the flexible certain distance of cover 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 has only 11mm, and similar products then generally need reach 13mm.Outside dimension is more little, and then in operation technique, the probability that the doctor visual field is stopped is more little.
It will be appreciated by persons skilled in the art that except that drill bit the present invention also is applicable to other field, as the parts of 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 all 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 conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (12)
1. a means for adjusting limit of movement is characterized in that, comprising: rotary body, adjustment cover and locking mechanism;
Described adjustment cover is sleeved on and is transferred on the part, and can only be transferred the part axis to move along this;
Described adjustment is overlapped an end and is provided with external screw thread, and described rotary body is provided with female thread and is sleeved on described adjustment and puts the two threaded engagement;
The described part of being transferred is provided with the described rotary body axis of 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 adjustment cover 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 female thread;
Described groove 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 the two ends of described thread bush respectively.
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 a 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 a frosting.
10. means for adjusting limit of movement as claimed in claim 1 is characterized in that, described adjustment cover and described cross section by the mating surface of accent part are 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 true CN102188273A (en) | 2011-09-21 |
| CN102188273B 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102188273B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102895014A (en) * | 2012-10-16 | 2013-01-30 | 宫锡和 | Drill depth controller |
| CN107007364A (en) * | 2017-05-17 | 2017-08-04 | 四川大学华西医院 | A kind of deep device of minimally invasive spine surgical apparatus limit |
| WO2018176866A1 (en) * | 2017-03-31 | 2018-10-04 | 重庆西山科技股份有限公司 | Ultrasound bone drill bit and ultrasonic bone knife system using same |
| CN109925022A (en) * | 2019-03-11 | 2019-06-25 | 北京积水潭医院 | Medical electric drill |
| CN114052941A (en) * | 2022-01-17 | 2022-02-18 | 珠海维尔康生物科技有限公司 | Visual mold testing tool capable of being unfolded |
Citations (5)
| 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 |
| US20070276397A1 (en) * | 2004-02-20 | 2007-11-29 | Pacheco Hector O | Method for improving pedicles screw placement in spinal surgery |
-
2010
- 2010-03-02 CN CN 201010116409 patent/CN102188273B/en not_active Expired - Fee Related
Patent Citations (5)
| 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 |
| US20070276397A1 (en) * | 2004-02-20 | 2007-11-29 | Pacheco Hector O | Method for improving pedicles screw placement in spinal surgery |
| 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 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102895014A (en) * | 2012-10-16 | 2013-01-30 | 宫锡和 | Drill depth controller |
| WO2018176866A1 (en) * | 2017-03-31 | 2018-10-04 | 重庆西山科技股份有限公司 | Ultrasound bone drill bit and ultrasonic bone knife system using same |
| CN107007364A (en) * | 2017-05-17 | 2017-08-04 | 四川大学华西医院 | A kind of deep device of minimally invasive spine surgical apparatus limit |
| CN107007364B (en) * | 2017-05-17 | 2019-12-06 | 四川大学华西医院 | Spine minimally invasive surgery instrument depth limiting device |
| CN109925022A (en) * | 2019-03-11 | 2019-06-25 | 北京积水潭医院 | Medical electric drill |
| CN114052941A (en) * | 2022-01-17 | 2022-02-18 | 珠海维尔康生物科技有限公司 | Visual mold testing tool capable of being unfolded |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102188273B (en) | 2013-03-27 |
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