CN112120809B - Minimally invasive residual root removing device and using method - Google Patents
Minimally invasive residual root removing device and using method Download PDFInfo
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- CN112120809B CN112120809B CN202010961457.4A CN202010961457A CN112120809B CN 112120809 B CN112120809 B CN 112120809B CN 202010961457 A CN202010961457 A CN 202010961457A CN 112120809 B CN112120809 B CN 112120809B
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- outer sleeve
- main body
- screw
- thread
- nail
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C3/00—Dental tools or instruments
- A61C3/14—Dentists' forceps or the like for extracting teeth
Abstract
The invention relates to a minimally invasive residual root removing device and a using method thereof. Utilize the screw nail to insert inside the root canal, the screw of positive and negative silk of rethread changes the shortcoming that the screw nail easily deviates from, and whole pen type structure does benefit to the application of force, combines to rock and positive and negative silk vertical direction dislocation power pulls out incomplete root, and whole wound is little, is difficult for taking place disconnected root and destroys sclerotin on every side, does benefit to the later stage treatment needs.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a minimally invasive residual root removing device and a using method thereof.
Background
Traditional tooth extraction tool carries out with modes such as drilling, chisel, sled, twisting, and clinically, the incomplete root after root canal therapy is pulled out and has always been a difficult problem, and the structure of incomplete root is very little, and the forceps of pulling out tooth is difficult to the centre gripping, often need cut the gum and pull out incomplete root again, and this kind of instrument and method are pulled out the tooth for a long time, and the wound is big, and patient postoperative complication is many, is difficult to preserve patient's bone tissue, brings a great deal of problems to treatments such as follow-up planting restoration.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a minimally invasive residual root removing device and a using method thereof.
One or more embodiments provide the following technical solutions:
a minimally invasive residual root removing device comprises a cylindrical main body, wherein the outer side of the main body is connected with an outer sleeve through threads; one end of the main body is provided with a threaded nail, the other end of the main body is provided with a hexagonal head, and the middle part of the main body is provided with an external thread.
The outer sleeve is cylindrical, and the inner wall of the outer sleeve is provided with internal threads.
The external thread in the middle of the main body is matched with the internal thread of the outer sleeve.
The screw nail is conical, and the surface has the left-hand thread, promptly to the direction of hexagonal head directional screw nail, during anticlockwise rotation main part, the screw nail drives the main part and is close to the object of being connected with the screw nail, clockwise keeps away from.
External screw thread and internal thread are matched with positive screw thread, promptly to the direction of the directional screw thread nail of hexagonal head, during anticlockwise rotation main part, through external screw thread and internal thread cooperation, under the unchangeable condition in outer tube position, drive the main part and keep away from the object of being connected with the screw thread nail along outer tube axis direction, clockwise then is close to.
The hexagonal head is connected with the wrench and used for transmitting torque, and the hexagonal head can also be a quadrangular head.
The length of the outer sleeve is less than the length of the external thread on the main body.
The screw nail is inserted into the stub and is connected with the stub to be pulled out through the screw thread.
And a locking mechanism is also arranged at one end of the outer sleeve pipe facing the threaded nail. When the locking mechanism is actuated, the main body and the outer sleeve are integrated to limit the rotational movement therebetween.
A use method of the minimally invasive residual root removing device comprises the following steps:
and the direction of the hexagonal head pointing to the threaded nail is taken as a reference, the main body is rotated anticlockwise after the residual root is inserted, and the threaded nail is fastened with the residual root.
The outer sleeve is fixed by being held by a hand, and the main body is rotated anticlockwise to separate the stub.
The clamping mechanism is connected with the outer sleeve and is connected with the fastening device through at least two groups of universal joints.
The universal joint is provided with a locking mechanism, and when the direction of the removing device is fixed, the universal joint is locked so as not to rotate any more, thereby fixing the position of the removing device.
Because the external screw thread of main part and the internal thread of outer tube are positive screw thread, when the direction of the directional screw thread nail of hexagonal head is the benchmark, anticlockwise rotation main part can make the main part follow the outer tube axis to the direction motion of keeping away from the stub, and the same anticlockwise rotation's screw thread nail in the main part, owing to be the reverse thread, the anticlockwise reverse thread that can make the screw thread surface contacts with the stub more and more tightly, and can not loosen and take off, thereby utilize the interact of reverse thread, pull out the stub.
The above one or more technical solutions have the following beneficial effects:
1. the mutual action of the positive and negative threads is matched with the fixing device, so that the stress direction of the residual root is vertical, the root breaking and the surrounding bone destruction are not easy to occur, and the requirement of later treatment is met.
2. Can rock according to the direction of incomplete root during clinical use, combine to rock and positive and negative screw thread vertical direction's dislocation pull out incomplete root, do not need the mode that the gum was opened to the tradition, the wound is less to be favorable to the later stage to resume.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a schematic diagram of the overall structure provided by one or more embodiments of the present invention;
FIG. 2 is a schematic diagram of a body structure provided in accordance with one or more embodiments of the present invention;
FIG. 3 is a cross-sectional structural view of an outer sleeve according to one or more embodiments of the present invention;
FIG. 4 is a schematic view of a minimally invasive stump extraction device using a fixture, according to one or more embodiments of the present invention;
in the figure: 1. a main body; 2. an outer sleeve; 3. a hexagonal head; 4. a clamping mechanism; 5. a universal joint; 6. a fastening device; 7. a locking mechanism; 11. an external thread; 12. a threaded nail; 21. an internal thread.
Detailed Description
The following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
As described in the background, the conventional tooth extraction tool needs to cut the gum to make the wound surface of the tooth tissue too large when dealing with the extraction of the stump. The common instruments are a dental elevator, a root tip elevator, a minimally invasive elevator and the like, and the beak end (working end) is required to be inserted between the residual root and the bone wall, and then the residual root is pulled out by utilizing the lever action. However, for the stump, especially for the stump after root canal treatment, the hard tissue of the root of the stump is less and fragile, the tool is difficult to insert between the stump and the bone wall, sometimes a hammer knocking method is needed to assist the insertion of the dental elevator, the brittle and thin dental stump tissue is broken, the residual bone tissue is broken and falls off, if a cutting and incising mode is adopted, the residual bone tissue is reduced, the difficulty of tooth division for beginners is higher, accurate tooth division palm holding is difficult, if the residual stump tissue is not accurately separated, the difficulty of tooth extraction in the later period is increased, and the bone removal amount is increased.
Example 1:
as shown in fig. 1-3, a minimally invasive residual root removing device comprises a cylindrical main body 1, a cylindrical outer sleeve 2 sleeved on the outer side; one end of the main body 1 is provided with a threaded nail 12, the other end is provided with a hexagonal head 3, and the middle part is provided with an external thread 11; the external thread 11 of the central part of the body 1 matches with the internal thread 21 of the inner surface of the outer sleeve 2.
The screw 12 is conical, and the surface has a reverse thread, that is, when the body 1 is rotated counterclockwise in the direction that the hexagonal head 3 points to the screw 12, the screw 12 drives the body 1 to approach an object connected with the screw 12, and the object is away clockwise.
The hexagonal head 3 is connected with a wrench for transmitting torque, and can also be a quadrangular head.
The length of the outer sleeve 2 is less than the length of the external thread 11 on the body 1.
The screw 12 is inserted into the stump and fastened by screwing the stump to be removed.
A locking mechanism 7 is further provided, and in this embodiment, the locking mechanism 7 is a snap-in type safety device and is located at one end of the outer sleeve facing the screw nail. When the buckle type safety mechanism acts, the main body 1 and the outer sleeve 2 are integrated to limit the rotation motion between the two.
The locking mechanism 7 is not limited to a snap-in type of security but can be any device known in the art that can lock the cylinder and the sleeve structure on the outside of the cylinder.
Example 2:
taking the direction shown in fig. 1-3 as an example, the process of extracting stumps by holding the fixed outer sleeve 2 by hand is as follows:
the screw 12 is conical, and the surface has the left-hand thread to the direction of the directional screw 12 of hexagonal head 3 is the benchmark, inserts through the rotatory hexagonal head 3 of spanner counter-clockwise direction behind the stub, drives 1 counter-clockwise turning of main part, and screw 12 is close to the stub and fastens with the stub.
The outer sleeve 2 is fixed by hand, and the main body 1 is rotated anticlockwise to separate the stump.
Because the external screw thread 11 of main part 1 and the internal thread 21 of outer tube 2 are the positive thread, when using the direction of 3 directional screw nails 12 of hexagonal head as the benchmark, anticlockwise rotation main part 1 can make main part 1 follow 2 axes of outer tube and to keeping away from the direction motion of stub, and the same anticlockwise rotation screw nails 12 on the main part 1 is owing to be the back thread, anticlockwise can make the back thread on screw nails 12 surface contact with the stub more and more tightly, and can not loosen and take off, thereby utilize the interact of positive and negative screw thread, pull out the stub.
The screw 12 is a reverse screw which is closer to the stub and becomes tighter and tighter by the counterclockwise rotation, while the screw 11 on the outer surface of the body 1 is a positive screw, and the cooperating outer sleeve 2 is away from the stub by the counterclockwise rotation, and this "away" movement lifts the screw 12 with the stub up to pull out the stub.
The rotational movement of the thread is converted into a force for lifting the stub by the outer sleeve 2, while the screw 12 is a counter-thread and cannot be loosened by a counter-clockwise rotation.
And main part 1 and outer tube 2 can hand-held operation, can rock according to the direction of incomplete root during clinical use, combine to rock and positive and negative screw thread vertical direction's dislocation pull out incomplete root, do not need the mode of traditional open gum, and the wound is less to difficult emergence is broken the root and is destroyed sclerotin on every side, does benefit to later stage treatment needs.
For example: utilize the buckle formula insurance in embodiment 1 to lock main part 1 and outer tube 2 and form an organic whole, the part of the outer tube 2 of doctor's handheld this moment both can continue to rotate main part 1 and make the screw nail 12 continuously dig into towards the stump depths, can also promote the stump by rocking and twisting the instrument wholly and be pulled out.
Example 3:
example 3 the purpose is to achieve the stump extraction process by means of an external fixation device with the "outer sleeve 2" fixed as a point of stress.
A use method of a minimally invasive stump removing device is provided, as shown in the direction of fig. 1-4 as an example, a clamping mechanism 4 can be used for fixing an outer sleeve 2, and the stump can be separated by the pulling force generated by the interaction of positive and negative threads.
The clamping mechanism 4 is connected with the outer sleeve 2, the clamping mechanism 4 is connected with the fastening device 6 through at least two groups of universal joints 5, the fastening device 6 is fixed at the edge of the existing diagnosis and treatment bed or chair, the universal joints 5 are provided with locking mechanisms, for example, spherical joints with locking mechanisms, and after the direction of the pulling-out device is fixed, the universal joints are locked to be not rotated any more, so that the position of the pulling-out device is fixed.
The process of removing the residual root by fixing the outer sleeve 2 by the clamping mechanism 4 is as follows:
the screw 12 is inserted into the stub and then the main body 1 is rotated counterclockwise, with the direction of the hexagonal head 3 pointing to the screw 12 as a reference, and the screw 12 is fastened.
The outer sleeve 2 is fixed, the outer sleeve 2 is fixed through the clamping mechanism 4, and the main body 1 is rotated anticlockwise to enable the stub to be separated.
Because the external screw thread 11 of main part 1 and the internal thread 21 of outer tube 2 are the positive screw thread, when using the direction of the directional screw nail 12 of hexagonal head 3 as the benchmark, anticlockwise rotation main part 1 can make main part 1 follow the 2 axis of outer tube and to the direction motion of keeping away from the stub, and the same anticlockwise rotation screw nail 12 on main part 1 is owing to be the counter-thread, the counter-thread that anticlockwise can make screw nail 12 surface contacts with the stub and more tightens, and can not loosen and take off, thereby utilize the interact of positive and negative screw thread, pull out the stub.
The outer sleeve 2 is clamped by the clamping mechanism 4, so that the pulling direction of the pulling device is fixed, the residual root is pulled out by dislocation in the vertical direction of the positive and negative threads, the traditional mode of cutting the gum is not needed, the controllable wound of the stress direction of the residual root is small, the root breaking and the surrounding bone damage are not easy to occur, and the later-stage treatment needs are facilitated.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (5)
1. The utility model provides a device is pulled out to incomplete root of wicresoft which characterized in that: the screw comprises a cylindrical main body, wherein one end of the main body is provided with a screw nail, the screw nail is conical, the surface of the screw nail is provided with reverse threads, the other end of the main body is provided with a hexagonal head, the middle part of the main body is connected with an outer sleeve through external threads, the outer sleeve is cylindrical, the inner wall of the outer sleeve is provided with internal threads, and the external threads and the internal threads of the outer sleeve are matched positive threads;
the pulling device also comprises a locking mechanism, and the locking mechanism is positioned at one end of the outer sleeve facing the threaded nail, so that the main body and the outer sleeve are integrated;
the pulling device further comprises a clamping mechanism, the clamping mechanism is connected with the outer sleeve, the clamping mechanism is connected with a fastening device through at least two groups of universal joints, and the fastening device is fixed at the edge of the existing diagnosis and treatment bed or chair.
2. The minimally invasive residual root extraction device according to claim 1, wherein: the external thread in the middle of the main body is matched with the internal thread of the outer sleeve.
3. The minimally invasive residual root extraction device according to claim 1, wherein: the reverse thread is formed by taking the direction of the hexagonal head pointing to the threaded nail as a reference, and when the main body is rotated anticlockwise, the threaded nail drives the main body to be close to an object connected with the threaded nail; away clockwise.
4. The minimally invasive residual root extraction device according to claim 1, characterized in that: the positive thread is characterized in that the direction that the hexagonal head points to the threaded nail is taken as a reference, when the main body is rotated anticlockwise, the main body is driven to be far away from an object connected with the threaded nail along the axis direction of the outer sleeve through the matching of the external thread and the internal thread under the condition that the position of the outer sleeve is not changed; approaching clockwise.
5. The minimally invasive residual root extraction device according to claim 1, wherein: the length of the outer sleeve is smaller than that of the external thread on the main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010961457.4A CN112120809B (en) | 2020-09-14 | 2020-09-14 | Minimally invasive residual root removing device and using method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010961457.4A CN112120809B (en) | 2020-09-14 | 2020-09-14 | Minimally invasive residual root removing device and using method |
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| Publication Number | Publication Date |
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| CN112120809A CN112120809A (en) | 2020-12-25 |
| CN112120809B true CN112120809B (en) | 2022-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010961457.4A Active CN112120809B (en) | 2020-09-14 | 2020-09-14 | Minimally invasive residual root removing device and using method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4230454A (en) * | 1978-11-03 | 1980-10-28 | Lococo Michael P | Tooth extractor |
| CN104582604A (en) * | 2012-05-20 | 2015-04-29 | 斯卡尔帕勒有限责任公司 | Surgical instrument |
| CN105361961A (en) * | 2015-11-17 | 2016-03-02 | 广州医科大学附属口腔医院 | Device for removal of root canal nail |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE310462T1 (en) * | 2001-04-12 | 2005-12-15 | Hans-Peter Hornig | DEVICE FOR REMOVAL OF TEETH |
| US20080044792A1 (en) * | 2006-08-17 | 2008-02-21 | Roberts Timothy J | Dental extraction device |
| CN205286559U (en) * | 2015-11-17 | 2016-06-08 | 广州医科大学附属口腔医院 | Modified wicresoft device of extracing tooth |
-
2020
- 2020-09-14 CN CN202010961457.4A patent/CN112120809B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4230454A (en) * | 1978-11-03 | 1980-10-28 | Lococo Michael P | Tooth extractor |
| CN104582604A (en) * | 2012-05-20 | 2015-04-29 | 斯卡尔帕勒有限责任公司 | Surgical instrument |
| CN105361961A (en) * | 2015-11-17 | 2016-03-02 | 广州医科大学附属口腔医院 | Device for removal of root canal nail |
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| CN112120809A (en) | 2020-12-25 |
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