CN109223204B - Spiral tooth extraction device - Google Patents
Spiral tooth extraction device Download PDFInfo
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- CN109223204B CN109223204B CN201811108085.XA CN201811108085A CN109223204B CN 109223204 B CN109223204 B CN 109223204B CN 201811108085 A CN201811108085 A CN 201811108085A CN 109223204 B CN109223204 B CN 109223204B
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- 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
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Abstract
The invention discloses a spiral tooth extraction device, which comprises a main supporting part, a sliding sleeve, a steel wire traction positioning part and a spiral telescopic part, wherein the main supporting part is arranged on the main supporting part; the main supporting part comprises a supporting body and a fan-shaped supporting plate; the sliding sleeve is arranged inside the sleeve-shaped supporting part in a sliding fit manner in the axial direction; the steel wire traction positioning part comprises a conical needle, a steel wire, a guide wheel, a rope pressing conical sleeve and a rope pressing conical shaft; the spiral telescopic part comprises a rotating shaft, a rotating shaft rolling axial positioning mechanism and a rotating handle. When the screw type tooth extraction device is used for positively screwing the rotating handle, the rotating shaft positively rotates to pull the sliding sleeve to retract backwards through the threaded structure so as to drive the steel wire to move backwards, horizontal tension acting on the steel wire is converted into tooth extraction tension in the up-and-down direction, and the force and the speed of tooth extraction can be effectively controlled through the force and the speed of screwing the rotating handle, so that the discomfort of a patient is relieved; the tooth extraction angle and direction can be accurately positioned in the tooth extraction process, and the completeness of the alveolar bone can be maintained to the maximum extent.
Description
Technical Field
The invention relates to a tooth extractor, in particular to a spiral tooth extractor suitable for extracting teeth, and belongs to the technical field of medical instruments.
Background
Medical personnel pull out the department of stomatology patient's tooth through the device of pulling out the tooth usually, and traditional device of pulling out the tooth is the extraction forceps usually, and medical personnel carry out the handheld extraction forceps after local anesthesia to patient's gum promptly and directly pull out patient's tooth. Although the tooth extraction by using the tooth extraction forceps has the advantage of short time, the extraction direction and the tooth extraction force of the tooth extraction forceps are not easy to control after the tooth is clamped by the tooth extraction forceps in the extraction process, the requirements on the skill, experience and responsibility of medical workers are high, and the consequence of brute force tooth extraction is usually caused, namely the conditions of gum tearing and alveolar bone injury are usually caused. On the one hand, however, the tooth extraction treatment adopted for coordinating the inconsistency between the tooth volume and the bone volume in the orthodontic process has high requirement on the integrity of alveolar bones, and violent tooth extraction can influence the orthodontic process; on the other hand, alveolar bone injury is taken as a complication of violent tooth extraction, has serious consequences, and is likely to cause dead bones formed by alveolar bones which are not taken out in time so as to cause iatrogenic injury; on the other hand, the violent tooth extraction not only can cause the loosening and even damage of the teeth adjacent to the teeth, but also causes great labor intensity of medical care personnel and causes great pain and discomfort of patients.
Disclosure of Invention
Aiming at the problems, the invention provides a spiral tooth extraction device which is convenient for medical staff to accurately control tooth extraction direction and tooth extraction force, keeps the integrity of alveolar bone to the maximum extent and can reduce the discomfort of patients.
In order to realize the aim, the spiral tooth extraction device comprises a main supporting part, a sliding sleeve, a steel wire traction positioning part and a spiral telescopic part;
the main supporting part comprises a supporting body and a fan-shaped supporting plate; the supporting body is of a bilateral symmetry structure, a raised sleeve-shaped supporting part is arranged at the middle rear part of the supporting body, and a limiting spacer ring is arranged at the inner rear part of the sleeve-shaped supporting part; the fan-shaped supporting plate is a fan-shaped ring structure with a forward opening, a flexible layer is fixedly laid on the surface of the fan-shaped ring structure, the fan-shaped supporting plate is horizontally arranged at the front part of the supporting body, the fan-shaped circle center of the fan-shaped supporting plate is positioned on the symmetrical central plane of the supporting body, the fan-shaped supporting plate is in sliding fit installation connection with the supporting body, and a rotation angle positioning component is also arranged between the fan-shaped supporting plate and the supporting;
the sliding sleeve is positioned in front of the limiting spacer ring and is axially arranged inside the sleeve-shaped supporting part in a sliding fit mode, the geometric central symmetry axis of the sliding sleeve is coaxially arranged with an inner hole of the sleeve-shaped supporting part positioned behind the limiting spacer ring, a radial positioning mechanism is further arranged between the sliding sleeve and the sleeve-shaped supporting part, a positioning spacer sleeve is arranged inside the sliding sleeve, a first internal thread structure is arranged on the inner surface of the sliding sleeve positioned in front of the positioning spacer sleeve, and a second internal thread structure is arranged on the inner surface of the sliding sleeve positioned behind the positioning spacer sleeve;
the steel wire traction positioning part comprises a conical needle, a steel wire, a guide wheel, a rope pressing conical sleeve and a rope pressing conical shaft; the bottom end of the conical needle is provided with a conical external thread, and the top end of the conical needle is fixedly installed and connected with the top end of the steel wire; the guide wheel is arranged on the supporting body through a wheel shaft arranged at the front end of the supporting body in an erecting mode, and the guide wheel is arranged in a rolling mode in the front-back direction; the inner hole of the rope pressing taper sleeve is of a tapered hole structure with a small front part and a large rear part, the outer surface of the rope pressing taper sleeve is provided with a first external thread structure matched with the first internal thread structure of the sliding sleeve, and the rope pressing taper sleeve is in threaded connection with the sliding sleeve through the first external thread structure; the rope pressing conical shaft is arranged inside the sliding sleeve positioned in front of the positioning spacer sleeve, the front part of the rope pressing conical shaft is provided with a conical surface structure in taper fit with an inner hole of the rope pressing conical sleeve, the rear part of the rope pressing conical shaft is provided with a rope pressing boss, a steel wire channel which axially penetrates through the rope pressing conical shaft is arranged at the middle axial line position of the rope pressing conical shaft, and the rope pressing conical shaft is also provided with a necking structure which can enable the conical surface structure at the front part of the rope pressing conical shaft to be subjected to necking deformation under the extrusion of the conical hole structure of the rope pressing conical sleeve; the steel wire bypasses the guide wheel, and the bottom end of the steel wire penetrates into the steel wire channel of the rope pressing conical shaft;
the spiral telescopic part is coaxially arranged in the sleeve-shaped supporting part and comprises a rotating shaft, a rotating shaft rolling axial positioning mechanism and a rotating handle; the rotating shaft is of a stepped shaft structure and comprises a small-diameter section positioned in the front of the rotating shaft and a large-diameter section positioned in the rear of the rotating shaft, an external thread structure II matched with the internal thread structure II of the sliding sleeve is arranged on the outer surface of the small-diameter section of the rotating shaft, the rotating shaft is in threaded connection with the sliding sleeve through the external thread structure II, and the outer diameter of the large-diameter section of the rotating shaft is in clearance fit with the inner diameter of an inner hole of the sleeve-shaped supporting part positioned behind the limiting spacer; the rotating shaft rolling axial positioning mechanism is arranged at the rear part of the sleeve-shaped supporting part; the rotating handle is fixedly arranged at the rear end of the rotating shaft.
As a further improvement scheme of the invention, the top end of the conical needle and the top end of the steel wire are provided with matched quick connection structures.
As a preferable scheme of the invention, the necking structure of the rope pressing conical shaft is a necking clearance groove which is arranged on the outer surface of the rope pressing conical shaft in a penetrating way along the axial direction and is communicated with the steel wire channel.
As an implementation mode of the sliding fit installation and connection of the fan-shaped support plate and the support body, the longitudinal section of the fan-shaped support plate is of a T-shaped or I-shaped structure, the front part of the support body is provided with a fan-shaped support plate installation groove arranged in the vertical direction of the notch, and the longitudinal section of the fan-shaped support plate installation groove is of a structure in inserted fit with the longitudinal section of the fan-shaped support plate.
As a further improvement of the present invention, the rotation angle positioning member is a positioning screw provided at a bottom position of the fan-shaped support plate mounting groove, and the positioning screw is mounted on the support body through a positioning screw hole penetrating through a bottom of the fan-shaped support plate mounting groove.
As one embodiment of the rotating shaft rolling axial positioning mechanism of the present invention, the rotating shaft rolling axial positioning mechanism is a rolling bearing structure having a bearing end cap.
As another embodiment of the rotating shaft rolling axial positioning mechanism of the present invention, the rotating shaft rolling axial positioning mechanism is a rolling steel ball structure having a steel ball roller way, a first annular groove is provided on the surface of the inner cavity at the rear part of the sleeve-shaped support part, and the cross section of the first annular groove is an arc-shaped structure; a second annular groove is formed in the outer surface of the large-diameter section of the rotating shaft, corresponding to the first annular groove, the section of the second annular groove is of an arc-shaped structure, the circle center of the arc-shaped structure of the first annular groove is concentric with that of the second annular groove, the first annular groove and the second annular groove jointly form a steel ball raceway, and a plurality of steel balls matched with the steel ball raceway are arranged in the steel ball raceway; and a steel ball mounting through hole penetrating through the sleeve-shaped supporting part is also arranged on the sleeve-shaped supporting part along the tangential direction of the sleeve-shaped supporting part corresponding to the first annular groove in the radial direction, and a plug is arranged on the steel ball mounting through hole.
As a further improvement scheme of the invention, the second internal thread structure of the sliding sleeve and the second external thread structure of the small-diameter section of the rotating shaft are matched with trapezoidal threads.
As an embodiment of the radial positioning mechanism between the sliding sleeve and the sleeve-shaped supporting portion, the radial positioning mechanism between the sliding sleeve and the sleeve-shaped supporting portion is a structure of a guide positioning groove and a guide positioning key which are arranged along the axial direction in a matching manner.
As another embodiment of the radial positioning mechanism between the sliding sleeve and the sleeve-shaped supporting portion, the radial positioning mechanism between the sliding sleeve and the sleeve-shaped supporting portion is a polygonal inner hole of the sleeve-shaped supporting portion and a polygonal outer structure of the sliding sleeve which are arranged along the axial direction in a matched manner.
Compared with the prior art, the spiral tooth extraction device is provided with the sliding sleeve which is arranged inside the sleeve-shaped supporting part in a sliding fit mode in the axial direction, and the radial positioning mechanism is arranged between the sliding sleeve and the sleeve-shaped supporting part, so that the sliding sleeve is pulled to retract backwards through the external thread structure II of the small-diameter section of the rotating shaft in the forward rotating process of the rotating shaft when the rotating handle is screwed in the forward direction to drive the steel wire to move backwards, horizontal tension acting on the steel wire is converted into tooth extraction tension in the up-and-down direction under the guiding action of the guide wheel, so that teeth are extracted from a gum, and the force and speed for tooth extraction can be effectively controlled through the force and speed for screwing the rotating handle, so that the discomfort of a patient is relieved; because the steel wire traction positioning part is provided with the rope pressing taper sleeve and the rope pressing taper shaft, the length of the steel wire can be roughly adjusted according to the approximate tooth extraction distance; because the fan-shaped supporting plate is arranged and the rotating angle positioning part is arranged between the fan-shaped supporting plate and the supporting body, the tooth extraction angle and direction can be accurately positioned in the tooth extraction process, and the completeness of the alveolar bone can be furthest kept.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a longitudinal cross-sectional view of a sector shaped support plate of the present invention;
FIG. 4 is a schematic longitudinal cross-sectional view of the mounting slot of the sector shaped support plate of the present invention;
FIG. 5 is a cross-sectional view B-B of FIG. 1;
fig. 6 is a cross-sectional view C-C of fig. 2.
In the figure: 1. a conical needle; 2. a T-shaped connector; 3. a steel wire; 4. a guide wheel; 5. a fan-shaped support plate; 6. a wheel axle; 7. a support body; 8. a rotational angle positioning member; 9. pressing a rope taper sleeve; 10. pressing a rope conical shaft; 11. a sliding sleeve; 12. a rotating shaft; 13. a rotating shaft rolling axial positioning mechanism; 14. a plug; 15. the rotary handle 16, the sleeve-shaped supporting part 17, the limiting spacer ring 18, the positioning spacer sleeve 19, the first annular groove 20 and the second annular groove.
Detailed Description
The present invention will be further explained with reference to the drawings (hereinafter, the left side direction of fig. 1 will be referred to as the front direction).
As shown in fig. 1 and 2, the screw-type tooth extraction device includes a main support portion, a slide bush 11, a wire pulling and positioning portion, and a screw expansion portion.
The main supporting part comprises a supporting body 7 and a fan-shaped supporting plate 5; the supporting body 7 is of a bilateral symmetry structure, a raised sleeve-shaped supporting part 16 is arranged at the middle rear part of the supporting body 7, and a limiting spacer ring 17 is arranged at the inner rear part of the sleeve-shaped supporting part 16; fan-shaped backup pad 5 is the fan-shaped ring structure that the opening set up to the place ahead, the flexible layer has been laid to the fixed surface of fan-shaped ring structure, the flexible layer can adopt rubber or silica gel material, fan-shaped backup pad 5 level sets up installs the front portion at supporter 7, the fan-shaped centre of a circle of fan-shaped backup pad 5 is located the symmetrical center plane of supporter 7, and fan-shaped backup pad 5 slides with supporter 7 and cooperates the erection joint, fan-shaped backup pad 5 can follow its fan-shaped centre of a circle and slide rotation transformation angle on supporter 7, still be equipped with rotation angle locating part 8 between fan-shaped backup pad.
Sliding sleeve 11 be located the place ahead axial sliding fit of spacing spacer ring 17 and install the inside at cover shape supporting part 16, and the geometric centre symmetry axis of sliding sleeve 11 and the coaxial setting of the hole that is located the cover shape supporting part 16 at spacing spacer ring 17 rear, still be equipped with radial positioning mechanism between sliding sleeve 11 and the cover shape supporting part 16, radial positioning mechanism can adopt the structure along the direction constant head tank and the direction positioning key that the axial direction cooperation set up, also can adopt the polygon hole of the cover shape supporting part 16 that sets up along the axial direction cooperation and the polygon appearance structure of sliding sleeve 11, the inside of sliding sleeve 11 is equipped with location spacer 18, sliding sleeve 11 is located to be equipped with internal thread structure one on the internal surface in location spacer 18 the place ahead, sliding sleeve 11 is located to be equipped with internal thread structure two on the internal surface in location spacer 18 rear.
The steel wire traction positioning part comprises a conical needle 1, a steel wire 3, a guide wheel 4, a rope pressing conical sleeve 9 and a rope pressing conical shaft 10; the bottom end of the conical needle 1 is provided with a conical external thread, and the top end of the conical needle 1 is fixedly installed and connected with the top end of the steel wire 3; the guide wheel 4 is arranged on the support body 7 through a wheel shaft 6 which is arranged at the front end of the support body 7 in an erecting way, and the guide wheel 4 is arranged in a rolling way in the front-back direction; an inner hole of the rope pressing taper sleeve 9 is of a tapered hole structure with a small front part and a large rear part, an external thread structure I matched with the internal thread structure I of the sliding sleeve 11 is arranged on the outer surface of the rope pressing taper sleeve 9, and the rope pressing taper sleeve 9 is in threaded connection with the sliding sleeve 11 through the external thread structure I; the rope pressing conical shaft 10 is arranged inside the sliding sleeve 11 in front of the positioning spacer sleeve 18, the front part of the rope pressing conical shaft 10 is arranged into a conical surface structure which is in taper fit with an inner hole of the rope pressing conical sleeve 9, the rear part of the rope pressing conical shaft 10 is provided with a rope pressing boss, a steel wire channel which axially penetrates through the rope pressing conical shaft 10 is arranged at the middle axial line position of the rope pressing conical shaft 10, and the rope pressing conical shaft 10 is also provided with a necking structure which can enable the conical surface structure at the front part of the rope pressing conical shaft to be subjected to necking deformation under the extrusion of the conical hole structure of the rope pressing conical sleeve 9; the steel wire 3 bypasses the guide wheel 4, and the bottom end of the steel wire 3 penetrates into the steel wire channel of the rope pressing conical shaft 10.
The spiral telescopic part is coaxially arranged inside the sleeve-shaped supporting part 16 and comprises a rotating shaft 12, a rotating shaft rolling axial positioning mechanism 13 and a rotating handle 15; the rotating shaft 12 is of a stepped shaft structure and comprises a small-diameter section positioned in the front of the rotating shaft 12 and a large-diameter section positioned in the rear of the rotating shaft 12, an external thread structure II matched with the internal thread structure II of the sliding sleeve 11 is arranged on the outer surface of the small-diameter section of the rotating shaft 12, the rotating shaft 12 is in threaded connection with the sliding sleeve 11 through the external thread structure II, and the outer diameter of the large-diameter section of the rotating shaft 12 is in clearance fit with the inner diameter of an inner hole of the sleeve-shaped supporting part 16 positioned behind the limiting spacer ring; the rotating shaft rolling axial positioning mechanism 13 is arranged at the rear part of the sleeve-shaped supporting part 16, the rotating shaft rolling axial positioning mechanism 13 can provide axial positioning for the rotating shaft 12 in the rotating process of the rotating shaft 12, and the rotating shaft rolling axial positioning mechanism 13 can adopt a rolling bearing structure with a bearing end cover or a rolling steel ball structure with a steel ball roller way; a rotary handle 15 is fixedly installed at the rear end of the rotary shaft 12.
Before the spiral tooth extraction device is used, the rotating handle 15 is firstly screwed reversely, the rotating shaft 12 rotates reversely, due to the axial positioning effect of the rotating shaft rolling axial positioning mechanism 13, the sliding sleeve 11 is pushed to extend forwards to a set distance through the external thread structure II of the small diameter section of the rotating shaft 12 in the process of reverse rotation of the rotating shaft 12, then the rope pressing taper sleeve 9 is rotated reversely to enable the rope pressing taper sleeve 9 to be screwed out of the sliding sleeve 11 forwards, at the moment, the necking structure of the rope pressing taper shaft 10 is in an initial state of non-necking deformation because of not being extruded by the taper hole structure of the rope pressing taper sleeve 9, the length of the steel wire 3 can be roughly adjusted according to the approximate tooth extraction distance, redundant steel wires 3 except the steel wire length of the effective tooth extraction distance can pass through a hole in the middle of the positioning spacer 18 of the sliding sleeve 11 and be stored in a space behind the positioning spacer 18 of the sliding sleeve 11, after the steel wire 3 is adjusted to the set length, the rope pressing taper sleeve 9 is rotated forwards to enable the rope pressing taper sleeve 9 to be, the rear end face of the rope pressing boss of the rope pressing conical shaft 10 abuts against the front end face of the positioning spacer 18 of the sliding sleeve 11 to realize positioning under the extrusion action of the conical hole structure of the rope pressing conical sleeve 9, the rope pressing conical sleeve 9 is continuously rotated in the forward direction, even if the front conical surface structure of the rope pressing conical shaft 10 is subjected to necking deformation, and then the steel wire 3 penetrating into the steel wire channel of the rope pressing conical shaft 10 is tightly bitten by the conical surface structure subjected to necking deformation, so that the steel wire 3 is stably connected with the sliding sleeve 11. When the tooth extraction tool is used for tooth extraction, firstly, a hole is drilled in a tooth to be extracted, and then the taper needle 1 is tapped into the drilled hole of the tooth to complete the connection of the taper needle 1 and the tooth; then the fan-shaped supporting plate 5 is propped against the upper jaw or the lower jaw of the patient, the fan-shaped supporting plate 5 is rotated to a proper angle according to the position of the teeth, and the angle is positioned by the rotating angle positioning part 8; finally, the rotating handle 15 and the rotating shaft 12 are screwed in the forward direction, namely, the rotating shaft 12 rotates in the forward direction, the sliding sleeve 11 is pulled to retract backwards through the second external thread structure of the small-diameter section of the rotating shaft 12 in the process of forward rotation of the rotating shaft 12, the steel wire 3 is driven to move backwards, horizontal tension acting on the steel wire 3 is converted into tooth extraction tension in the up-and-down direction under the guiding action of the guide wheel 4, and then the teeth are extracted from the gum.
In order to prevent the twisting influence on the steel wire 3 caused by the conical needle 1 and the teeth in the connection process, as a further improvement scheme of the invention, a matched quick connection structure is arranged at the top end of the conical needle 1 and the top end of the steel wire 3, and the quick connection structure can be a T-shaped groove matched with the top end of the conical needle 1 and a T-shaped connector 2 structure arranged at the top end of the steel wire 3, or a cylindrical groove matched with the brake cable connection structure and arranged at the top end of the conical needle 1 and a cylindrical connector structure arranged at the top end of the steel wire 3. When the tooth is pulled out, the conical needle 1 is firstly tapped into a drill hole of the tooth to complete the connection of the conical needle 1 and the tooth, and then the steel wire 3 is connected with the conical needle 1 through the quick connecting structure, so that the problem of twisting and rotating of the steel wire 3 can be avoided.
The necking structure of the rope pressing conical shaft 10 may be a structure form of a plurality of elastic necking claws which are arranged at the front part of the rope pressing conical shaft 10 and jointly enclose a conical surface structure, or a structure form of a necking clearance groove which is arranged on the outer surface of the rope pressing conical shaft 10 in a penetrating way along the axial direction and is penetrated with the steel wire channel, and the latter is preferable because the processing and installation of the latter are simpler, namely, as a preferable scheme of the invention, as shown in fig. 6, the necking structure of the rope pressing conical shaft 10 is a necking clearance groove which is arranged on the outer surface of the rope pressing conical shaft 10 in a penetrating way along the axial direction and is penetrated with the steel wire channel.
As an embodiment of the present invention, in which the fan-shaped support plate 5 and the support body 7 are slidably fitted and connected, as shown in fig. 3, the longitudinal section of the fan-shaped support plate 5 has a T-shaped or i-shaped structure, the front portion of the support body 7 is provided with a fan-shaped support plate installation groove formed in the vertical direction of the notch, and the longitudinal section of the fan-shaped support plate installation groove shown in fig. 4 is a structure in which the fan-shaped support plate 5 is inserted and fitted in the vertical direction, and the inserted and fitted structure can limit the movement of the fan-shaped support plate 5.
The rotation angle positioning part 8 can be arranged at the bottom of the installation groove of the fan-shaped support plate or at the ledge of the installation groove of the fan-shaped support plate, so as to facilitate the processing and installation and effectively position the angle of the fan-shaped support plate 5.
As an embodiment of the rotating shaft rolling axial positioning mechanism 13 of the present invention, as shown in fig. 5, the rotating shaft rolling axial positioning mechanism 13 is a rolling steel ball structure having a steel ball roller way, a first annular groove (19) is provided on the inner cavity surface of the rear portion of the sleeve-shaped support portion 16, and the cross section of the first annular groove (19) is an arc-shaped structure; a second annular groove (20) is arranged on the outer surface of the large-diameter section of the rotating shaft 12 at a position corresponding to the first annular groove (19), the section of the second annular groove (20) is of an arc-shaped structure, the circle center of the arc-shaped structure of the first annular groove (19) and the circle center of the arc-shaped structure of the second annular groove (20) are concentrically arranged, the first annular groove (19) and the second annular groove (20) jointly form a steel ball raceway, and a plurality of steel balls matched with the steel ball raceway are arranged in the steel ball raceway; and a steel ball mounting through hole penetrating through the sleeve-shaped supporting part 16 is also formed in the sleeve-shaped supporting part 16 along the radial direction of the sleeve-shaped supporting part corresponding to the tangential direction of the first annular groove (19), and a plug 14 is arranged on the steel ball mounting through hole. The steel balls can be placed in the steel ball roller path through the steel ball mounting through holes, the steel balls can roll in the steel ball roller path to reduce the rotation resistance in the rotation process of the rotating shaft 12, and meanwhile the steel balls can limit the axial movement of the rotating shaft 12.
As the trapezoidal thread has the self-locking function, in order to further reduce the labor intensity of medical staff, as a further improvement scheme of the invention, the second internal thread structure of the sliding sleeve 11 and the second external thread structure of the small-diameter section of the rotating shaft 12 are matched with the trapezoidal thread. The matched trapezoidal threads can realize the discontinuous rotation and self-locking of the rotating shaft 12, thereby further reducing the labor intensity of medical personnel.
The spiral tooth extraction device is provided with the sliding sleeve 11 which is arranged inside the sleeve-shaped supporting part 16 in a sliding fit mode in the axial direction, and the radial positioning mechanism is arranged between the sliding sleeve 11 and the sleeve-shaped supporting part 16, so that the sliding sleeve 11 is pulled backwards through the external thread structure II of the small-diameter section of the rotating shaft 12 in the process of forward rotation of the rotating shaft 12 when the rotating handle 15 is screwed in the forward direction, the steel wire 3 is driven to move backwards, the horizontal tension acting on the steel wire 3 is converted into the tooth extraction tension in the up-and-down direction under the guiding action of the guide wheel 4, the tooth is extracted from a gum, and the force and the speed for tooth extraction can be effectively controlled through the force and the speed for screwing the rotating handle 15, so that the discomfort of a patient; because the steel wire traction positioning part is provided with the rope pressing taper sleeve 9 and the rope pressing taper shaft 10, the length of the steel wire 3 can be roughly adjusted according to the approximate tooth extraction distance; because the fan-shaped supporting plate 5 is arranged and the rotating angle positioning part 8 is arranged between the fan-shaped supporting plate 5 and the supporting body 7, the tooth extraction angle and direction can be accurately positioned in the tooth extraction process, and the completeness of alveolar bones can be kept to the maximum extent.
Claims (6)
1. A spiral tooth extraction device is characterized by comprising a main supporting part, a sliding sleeve (11), a steel wire traction positioning part and a spiral telescopic part;
the main supporting part comprises a supporting body (7) and a fan-shaped supporting plate (5); the supporting body (7) is of a bilaterally symmetrical structure, a raised sleeve-shaped supporting part (16) is arranged at the middle rear part of the supporting body (7), and a limiting spacing ring (17) is arranged at the inner rear part of the sleeve-shaped supporting part (16); the fan-shaped supporting plate (5) is a fan-shaped ring structure with an opening arranged forwards, a flexible layer is fixedly laid on the surface of the fan-shaped ring structure, the fan-shaped supporting plate (5) is horizontally arranged and installed at the front part of the supporting body (7), the fan-shaped circle center of the fan-shaped supporting plate (5) is positioned on the symmetrical central plane of the supporting body (7), the fan-shaped supporting plate (5) is connected with the supporting body (7) in a sliding fit manner, and a rotation angle positioning component (8) is further arranged between the fan-shaped supporting plate (5) and the supporting;
the sliding sleeve (11) is positioned in front of the limiting spacer ring (17) and is axially installed inside the sleeve-shaped supporting part (16) in a sliding fit mode, the geometric central symmetry axis of the sliding sleeve (11) is coaxially arranged with the inner hole of the sleeve-shaped supporting part (16) positioned behind the limiting spacer ring (17), a radial positioning mechanism is further arranged between the sliding sleeve (11) and the sleeve-shaped supporting part (16), a positioning spacer sleeve (18) is arranged inside the sliding sleeve (11), a first internal thread structure is arranged on the inner surface of the sliding sleeve (11) positioned in front of the positioning spacer sleeve (18), and a second internal thread structure is arranged on the inner surface of the sliding sleeve (11) positioned behind the positioning spacer sleeve (18);
the steel wire traction positioning part comprises a conical needle (1), a steel wire (3), a guide wheel (4), a rope pressing conical sleeve (9) and a rope pressing conical shaft (10); the bottom end of the conical needle (1) is provided with a conical external thread, the top end of the conical needle (1) is fixedly installed and connected with the top end of the steel wire (3), and the top end of the conical needle (1) and the top end of the steel wire (3) are provided with a matched quick connection structure; the guide wheel (4) is arranged on the supporting body (7) through a wheel shaft (6) which is erected and arranged at the front end of the supporting body (7), and the guide wheel (4) is arranged in a rolling manner in the front-back direction; an inner hole of the rope pressing taper sleeve (9) is of a tapered hole structure with a small front part and a large rear part, an external thread structure I matched with the internal thread structure I of the sliding sleeve (11) is arranged on the outer surface of the rope pressing taper sleeve (9), and the rope pressing taper sleeve (9) is in threaded connection with the sliding sleeve (11) through the external thread structure I; the rope pressing conical shaft (10) is arranged inside the sliding sleeve (11) in front of the positioning spacer sleeve (18), the front part of the rope pressing conical shaft (10) is arranged into a conical surface structure in taper fit with an inner hole of the rope pressing conical sleeve (9), the rear part of the rope pressing conical shaft (10) is provided with a rope pressing boss, a steel wire channel axially penetrating through the rope pressing conical shaft (10) is arranged at the central axis position of the rope pressing conical shaft (10), the rope pressing conical shaft (10) is also provided with a necking structure capable of enabling the conical surface structure at the front part of the rope pressing conical shaft to be subjected to necking deformation under the extrusion of the conical hole structure of the rope pressing conical sleeve (9), and the necking structure of the rope pressing conical shaft (10) is a necking clearance groove which is arranged on the outer surface of the rope pressing conical shaft (10) in a penetrating manner along the axial direction and is communicated with the steel wire channel; the steel wire (3) bypasses the guide wheel (4), and the bottom end of the steel wire (3) penetrates into a steel wire channel of the rope pressing conical shaft (10);
the spiral telescopic part is coaxially arranged in the sleeve-shaped supporting part (16), and comprises a rotating shaft (12), a rotating shaft rolling axial positioning mechanism (13) and a rotating handle (15); the rotating shaft (12) is of a stepped shaft structure and comprises a small-diameter section positioned in the front of the rotating shaft (12) and a large-diameter section positioned in the rear of the rotating shaft (12), an external thread structure II matched with an internal thread structure II of the sliding sleeve (11) is arranged on the outer surface of the small-diameter section of the rotating shaft (12), the rotating shaft (12) is in threaded connection with the sliding sleeve (11) through the external thread structure II, and the outer diameter of the large-diameter section of the rotating shaft (12) is in clearance fit with the inner diameter of an inner hole of the sleeve-shaped supporting part (16) positioned behind the limiting spacer ring (17); the rotating shaft rolling axial positioning mechanism (13) is arranged at the rear part of the sleeve-shaped supporting part (16), the rotating shaft rolling axial positioning mechanism (13) is of a rolling steel ball structure with a steel ball roller way, a first annular groove (19) is arranged on the surface of an inner cavity at the rear part of the sleeve-shaped supporting part (16), and the section of the first annular groove (19) is of an arc-shaped structure; a second annular groove (20) is arranged on the outer surface of the large-diameter section of the rotating shaft (12) at a position corresponding to the first annular groove (19), the section of the second annular groove (20) is of an arc-shaped structure, the circle center of the arc-shaped structure of the first annular groove (19) and the circle center of the arc-shaped structure of the second annular groove (20) are concentrically arranged, the first annular groove (19) and the second annular groove (20) jointly form a steel ball raceway, and a plurality of steel balls matched with the steel ball raceway are arranged in the steel ball raceway; a steel ball mounting through hole penetrating through the sleeve-shaped supporting part (16) is further formed in the sleeve-shaped supporting part (16) along the radial direction corresponding to the tangential direction of the first annular groove (19), and a plug (14) is arranged on the steel ball mounting through hole; the rotary handle (15) is fixedly arranged at the rear end of the rotary shaft (12).
2. A screw-type tooth extraction device according to claim 1, wherein the longitudinal section of the fan-shaped support plate (5) is of a T-shaped or i-shaped configuration, the front portion of the support body (7) is provided with a fan-shaped support plate installation groove arranged in the up-down direction of the notch, and the longitudinal section of the fan-shaped support plate installation groove is of a configuration in which it is fitted in an insertion manner with the longitudinal section of the fan-shaped support plate (5).
3. The screw-type tooth extraction device according to claim 2, wherein the rotation angle positioning member (8) is a positioning screw provided at a bottom position of the sector-shaped support plate installation groove, the positioning screw being mounted on the support body (7) through a positioning screw hole penetrating through a bottom of the sector-shaped support plate installation groove.
4. The screw-type tooth extraction device according to claim 1, wherein the second internal thread structure of the sliding sleeve (11) and the second external thread structure of the small diameter section of the rotating shaft (12) are matched with each other to form a trapezoidal thread.
5. A screw-type tooth extraction device according to claim 1, wherein the radial positioning means between the sliding sleeve (11) and the sleeve-shaped support portion (16) is a guide positioning groove and a guide positioning key which are cooperatively arranged in the axial direction.
6. A screw-type tooth extraction device according to claim 1, wherein the radial positioning means between the sliding sleeve (11) and the sleeve-shaped support portion (16) is a polygonal inner hole of the sleeve-shaped support portion (16) and a polygonal outer shape of the sliding sleeve (11) which are arranged in an axial direction in a matching manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811108085.XA CN109223204B (en) | 2018-09-21 | 2018-09-21 | Spiral tooth extraction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811108085.XA CN109223204B (en) | 2018-09-21 | 2018-09-21 | Spiral tooth extraction device |
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| Publication Number | Publication Date |
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| CN109223204A CN109223204A (en) | 2019-01-18 |
| CN109223204B true CN109223204B (en) | 2021-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811108085.XA Active CN109223204B (en) | 2018-09-21 | 2018-09-21 | Spiral tooth extraction device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI697322B (en) * | 2019-10-21 | 2020-07-01 | 財團法人金屬工業研究發展中心 | Device for pulling a tooth |
| CN111904627A (en) * | 2020-07-13 | 2020-11-10 | 秦丕美 | Convenient deciduous tooth extraction auxiliary device based on medical diagnosis and treatment of child |
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| US8439679B2 (en) * | 2006-10-11 | 2013-05-14 | Theodore John Hoke, III | Extractor for broken tooth root |
| CH701326A1 (en) * | 2009-06-17 | 2010-12-31 | Fehlmann Ag | Swivelable apparatus for e.g. four-axis machine tool, for processing work-piece, has bearing units designed such that rotation center is excentric to centre of bearing pin and/or bearing borehole |
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| US10357271B2 (en) * | 2012-05-20 | 2019-07-23 | Scalpal Llc | Surgical instrument |
| WO2016024726A1 (en) * | 2014-08-12 | 2016-02-18 | 연세대학교 원주산학협력단 | Forceps for tooth extraction |
| CN205286562U (en) * | 2015-11-17 | 2016-06-08 | 广州医科大学附属口腔医院 | Instruments for tooth extraction of wicresoft |
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Address after: 221018 Lishui Road, Yunlong District, Xuzhou, Jiangsu 2 Patentee after: XUZHOU University OF TECHNOLOGY Address before: 221000 Science and Technology Park of Xuzhou University of Engineering, No. 18 South Third Ring Road, Quanshan District, Xuzhou City, Jiangsu Province (Xuzhou 2.5 Industrial Park) Patentee before: XUZHOU University OF TECHNOLOGY |