CN203790067U - Dental nail puller - Google Patents
Dental nail puller Download PDFInfo
- Publication number
- CN203790067U CN203790067U CN201420127305.4U CN201420127305U CN203790067U CN 203790067 U CN203790067 U CN 203790067U CN 201420127305 U CN201420127305 U CN 201420127305U CN 203790067 U CN203790067 U CN 203790067U
- Authority
- CN
- China
- Prior art keywords
- central screw
- nail
- fetching device
- main body
- hole
- 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.)
- Withdrawn - After Issue
Links
Abstract
The utility model belongs to the field of dental care, and relates to a dental nail puller which is used for extracting planted dental implants. The dental nail puller comprises a torque head, a nail puller main body and a central screw rod, wherein a positioning step hole is formed inside the torque head; a step hole is formed inside the nail puller main body; a ratchet groove is formed in the upper end of the nail puller main body, so that a ratchet wrench can be used for transmitting torque for extracting an implant; a Mohs conical surface is formed on the lower part of the nail puller main body; a boss is arranged on the Mohs conical surface; a positioning step is arranged on the top of the central screw rod; a step segment is formed on the lower part of the central screw rod; a threaded segment which is connected with the inner thread of the implant is formed at the bottom of the central screw rod; the central screw rod is arranged in the step hole of the nail puller main body; the threaded segment, which is connected with the inner threaded hole of the implant, of the central screw rod is exposed out of the step hole, so that the threaded segment can be conveniently connected with the inner thread of the implant during use; the top of the central screw rod sleeves the positioning step hole of the torque head; the top of the central screw rod and the top end face of the torque head are fixed into a whole by welding.
Description
Technical field
This utility model belongs to dental care field, relates to a kind of dentistry nail-fetching device, takes out for the dentistry implant after planting.
Background technology
Dentistry planting technology, through development for a long time, is approved more and more widely.Because postoperative complication, planting location all likely do not cause planting unsuccessfully to many reasons such as, infected or client need, plantation nail need to be taken out from patient's mouth.Implantation body is brought into by carrier while implantation, and by carrier transmitting torque, implantation body can be screwed on dental bed bone like a cork.Once implantation body implants, want implantation body to take out, because of do not have can transmitting torque bridge, have relative difficulty.Odontologist is used rough power that tooth implant is taken out with medical calm conventionally at present, and so not only operating difficulties, also likely damages dental bed bone, injures patient's oral cavity.
Summary of the invention
This utility model object is to provide a kind of dentistry nail-fetching device for above-mentioned inconvenience, is that one can facilitate implantation body to take out, and can reduce again patient's misery, is convenient to mass-produced dentistry nail-fetching device.
This utility model is achieved by the following technical solution: a kind of dentistry nail-fetching device comprises torsion head, nail-fetching device main body and central screw; Described torsion head outer surface is provided with flat filament or outer-hexagonal, is convenient to transmitting torque, and there is positioning step hole torsion head inside, and top, positioning step hole diameter of bore is less than bottom diameter of bore; Described nail-fetching device body interior has stepped hole, stepped hole top diameter of bore is less than bottom diameter of bore, nail-fetching device main body upper end is provided with ratchet slot, ratchet spanner transmitting torque easy to use takes out implantation body, nail-fetching device lower body part is provided with the Mohs conical surface, on the Mohs conical surface, be provided with boss, described boss can be set to four jiaos, hexagonal or anistree boss; Described central screw top is provided with positioning step, central screw top outside diameter is less than upper end outside diameter, central screw bottom is provided with step section, central screw top outside diameter is less than step section outside diameter, and central screw bottom is provided with the thread segment being connected with implantation body female thread.
Central screw is arranged in nail-fetching device main body stepped hole, the thread segment being connected with implantation body internal thread hole of central screw exposes stepped hole, time easy to use, be connected with implantation body female thread, central screw top is enclosed within torsion head positioning step hole, adopts welding manner that central screw top and torsion crown end face are welded and fixed integral.
Operation principle of the present utility model is: first nail-fetching device is packed into implantation body's endoporus, the boss that makes nail-fetching device main body coordinates with implantation body endoporus, then turn clockwise nail-fetching device torsion head until tighten, ratchet spanner is enclosed within on the ratchet slot of nail-fetching device main body again, is rotated counterclockwise ratchet spanner, so just implantation body can be taken out from alveolar bone, then take off ratchet spanner, be rotated counterclockwise nail-fetching device torsion head (if moment is too large, can use instrument rotation flat filament face or hex surface), torsion head drives central screw upwards until the step surface of central screw is encountered nail-fetching device main body endoporus step surface, now the thread segment of central screw bottom does not also depart from implantation body's inner hole thread completely, screw thread is changed to axial force by torque axis while back-out, the step section of central screw bottom is upwards pushed up nail-fetching device main body, make the nail-fetching device lower body part Mohs conical surface and boss depart from implantation body's endoporus, so just nail-fetching device can be taken off from implantation body.
The beneficial effects of the utility model are: a kind of dentistry nail-fetching device of this utility model is reasonable in design, simple in structure, is convenient to a large amount of production, easy to operate.Solve and taken off implantation body with medical calm at present and have a difficult problem for the risk of injury patient's mouth.Also considered, taking off the nail-fetching device Mohs conical surface and the locked problem at implantation body's endoporus of boss after implantation body, while having used screw thread derotation for this problem is ingenious, rotation torque to be converted to axial force and to eject nail-fetching device main body, easily taken off nail-fetching device.Not only remove doctor's worry, also reduced the unnecessary misery of patient.
Brief description of the drawings
Below with reference to accompanying drawing, invention is further described:
Fig. 1 is a kind of dentistry nail-fetching device of this utility model structure full sectional view.
Fig. 2 is the torsion head front view of a kind of dentistry nail-fetching device of this utility model.
Fig. 3 is the torsion head top view of a kind of dentistry nail-fetching device of this utility model.
Fig. 4 is the nail-fetching device main body front view of a kind of dentistry nail-fetching device of this utility model.
Fig. 5 is nail-fetching device main body A-A cutaway view of a kind of dentistry nail-fetching device of Fig. 4 this utility model.
Fig. 6 is the nail-fetching device main body cutaway view of a kind of dentistry nail-fetching device of this utility model.
Fig. 7 is the central screw schematic diagram of a kind of dentistry nail-fetching device of this utility model.
Fig. 8 is a kind of dentistry nail-fetching device of this utility model using state schematic diagram.The process that a kind of dentistry nail-fetching device of this utility model takes out in implantation body.
In figure: 1, torsion head, 2, nail-fetching device main body, 3, central screw, 4, positioning step hole, 5, flat filament or outer-hexagonal, 6, positioning step, 7, step section, 8, thread segment, 9, hole step, 10, ratchet slot, 11, the Mohs conical surface, 12, boss, 13, implantation body.
Detailed description of the invention
Below with reference to accompanying drawing, invention is further described.
A kind of dentistry nail-fetching device comprises torsion head 1, nail-fetching device main body 2 and central screw 3, described torsion head 1 outer surface is provided with flat filament or outer-hexagonal 5 is convenient to transmitting torque, there is positioning step hole 4 torsion head 1 inside, and positioning step hole 4 top diameter of bores are less than bottom diameter of bore; There is stepped hole 9 described nail-fetching device main body 2 inside, stepped hole 9 top diameter of bores are less than bottom diameter of bore, nail-fetching device main body 2 upper ends are provided with ratchet slot 10, ratchet spanner transmitting torque easy to use takes out implantation body, nail-fetching device main body 2 bottoms are provided with the Mohs conical surface 11, on the Mohs conical surface 11, be provided with boss 12, described boss 12 can be set to four jiaos, hexagonal or anistree boss; Described central screw 3 tops are provided with positioning step 6, central screw top outside diameter is less than upper end outside diameter, central screw 3 bottoms are provided with step section 7, central screw top outside diameter is less than step section outside diameter, and central screw 3 bottoms are provided with the thread segment 8 being connected with implantation body female thread.
Central screw 3 is arranged in nail-fetching device main body 2 stepped holes 9, the thread segment 8 dew place stepped holes that are connected with implantation body internal thread hole of central screw 3, time easy to use, be connected with implantation body female thread, central screw 3 tops are enclosed within torsion head positioning step hole 4, adopt welding manner that central screw 3 tops and torsion head 1 top end face are welded and fixed integral.
Operation principle of the present utility model is: first nail-fetching device is packed into implantation body's 13 endoporus, the boss 12 that makes nail-fetching device main body 3 coordinates with implantation body 13 endoporus, then turn clockwise nail-fetching device torsion head 1 until tighten, again ratchet spanner is enclosed within on the ratchet slot 10 of nail-fetching device main body, is rotated counterclockwise ratchet spanner, so just implantation body can be taken out from alveolar bone, then take off ratchet spanner, if it is too large to be rotated counterclockwise nail-fetching device torsion head 1(moment, can use instrument rotation flat filament face or hex surface 5), torsion head 1 drives central screw 3 upwards until the step surface 7 of central screw is encountered nail-fetching device main body endoporus step surface 9, now the thread segment 8 of central screw bottom does not also depart from implantation body's inner hole thread completely, screw thread is changed to axial force by torque axis while back-out, the step section 7 of central screw bottom is upwards pushed up nail-fetching device main body 2, make the nail-fetching device lower body part Mohs conical surface 11 and boss 12 depart from implantation body's 13 endoporus, so just nail-fetching device can be taken off from implantation body 13.
Other parts in this utility model adopt prior art, do not repeat them here.
Claims (3)
1. a dentistry nail-fetching device, is characterized in that: comprise torsion head, nail-fetching device main body and central screw; There is positioning step hole described torsion head inside, and top, positioning step hole diameter of bore is less than bottom diameter of bore; Described nail-fetching device body interior has stepped hole, stepped hole top diameter of bore is less than bottom diameter of bore, and nail-fetching device main body upper end is provided with ratchet slot, and ratchet spanner transmitting torque easy to use takes out implantation body, nail-fetching device lower body part is provided with the Mohs conical surface, on the Mohs conical surface, is provided with boss;
Described central screw top is provided with positioning step, central screw top outside diameter is less than upper end outside diameter, central screw bottom is provided with step section, central screw top outside diameter is less than step section outside diameter, and central screw bottom is provided with the thread segment being connected with implantation body female thread;
Central screw is arranged in nail-fetching device main body stepped hole, the thread segment being connected with implantation body internal thread hole of central screw exposes stepped hole, time easy to use, be connected with implantation body female thread, central screw top is enclosed within torsion head positioning step hole, adopts welding manner that central screw top and torsion crown end face are welded and fixed integral.
2. a kind of dentistry nail-fetching device according to claim 1, is characterized in that: described torsion head outer surface is provided with flat filament or outer-hexagonal, is convenient to transmitting torque.
3. a kind of dentistry nail-fetching device according to claim 1, is characterized in that: the boss on the Mohs conical surface of nail-fetching device lower body part is set to four jiaos, hexagonal or anistree boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420127305.4U CN203790067U (en) | 2014-03-20 | 2014-03-20 | Dental nail puller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420127305.4U CN203790067U (en) | 2014-03-20 | 2014-03-20 | Dental nail puller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203790067U true CN203790067U (en) | 2014-08-27 |
Family
ID=51372348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420127305.4U Withdrawn - After Issue CN203790067U (en) | 2014-03-20 | 2014-03-20 | Dental nail puller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203790067U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103860278A (en) * | 2014-03-20 | 2014-06-18 | 常州百康特医疗器械有限公司 | Dental nail taking-out device |
| CN106363577A (en) * | 2016-08-31 | 2017-02-01 | 戴杰磨床集团股份有限公司 | Disassembly device for grinding head and utilization method thereof |
-
2014
- 2014-03-20 CN CN201420127305.4U patent/CN203790067U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103860278A (en) * | 2014-03-20 | 2014-06-18 | 常州百康特医疗器械有限公司 | Dental nail taking-out device |
| CN103860278B (en) * | 2014-03-20 | 2016-09-14 | 常州百康特医疗器械有限公司 | A kind of dentistry nail-fetching device |
| CN106363577A (en) * | 2016-08-31 | 2017-02-01 | 戴杰磨床集团股份有限公司 | Disassembly device for grinding head and utilization method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140827 Effective date of abandoning: 20160914 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |