CN219480380U - Micro-screw screwing tool guiding device and micro-screw screwing tool kit - Google Patents

Abstract

The utility model relates to the field of medical equipment, and discloses a micro-screw driver guiding device and a micro-screw driver tool kit, which are used for guiding a micro-screw driver and comprise: the fixing piece and the guide piece handle head. The guide piece is provided with a first guide groove which extends along the length direction of the guide piece and penetrates through the guide piece. The long rod-shaped main body of the screwdriver can be placed in the first guide groove and guided and positioned by the first guide groove, so that the accuracy of the micro-screw implantation position and the path is ensured, and the risk of damaging the tooth root of the micro-screw can be greatly reduced; meanwhile, the problem that the long rod-shaped main body of the screwdriver shakes can be effectively avoided, microcracks are prevented from occurring in the alveolar bone, the stability of the micro screw is improved, and the falling rate is reduced.

Description

Micro-screw screwing tool guiding device and micro-screw screwing tool kit

Technical Field

The utility model relates to the field of medical instruments, in particular to a micro-screw driver guide device and a micro-screw driver tool kit.

Background

Microscrew is a device commonly used in the field of orthodontic to aid in the reinforcement of anchorage. The handle is tightened with a micro-screw at the time of clinical operation, and the micro-screw is rotated and fixed in the alveolar bone of the patient. Referring to fig. 1 and 2, a micro-screw tightening handle generally includes three parts of a crown provided with a micro-screw groove for receiving a micro-screw, a long rod-shaped body, and a handle.

In orthodontic treatment, the clinical micro-screw implantation operation is performed by combining CBCT three-dimensional observation with the experience of doctors at present as a main positioning mode, and the accuracy is low.

Clinically relevant medical risks often caused by implant position and path deviation, for example, a micro screw sometimes deviates from an ideal path during implantation, so that the micro screw contacts and even damages adjacent tooth roots, and temporary and even irreversible tooth damage is caused, which is a serious medical risk; in addition, the small shaking of the handle can cause microcracks in the alveolar bone, so that the stability of the micro screw is affected and the falling rate is increased.

Disclosure of Invention

The utility model aims to provide a micro-screw implantation guiding device, which solves the technical problem of related medical risks caused by implantation position and path deviation.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a micro-screw driver guide for guiding a micro-screw driver, comprising:

a fixture for mounting on a tooth, maintaining a stable retention;

the guide piece is connected with the fixing piece, a first guide groove is formed in the guide piece, the shape of the first guide groove is matched with that of the long rod-shaped main body of the micro screw driver, and the long rod-shaped main body can freely rotate on the first guide groove by taking the axis of the long rod-shaped main body as a rotation axis;

the micro screw driver is used for moving forwards and backwards along the length direction of the first guide groove under the action of external force.

Further, the guide member includes:

the guide part is connected with the fixing piece, the first guide groove is formed in the guide part, and the part, surrounded by the first guide groove, of the long rod-shaped main body has a circumference which is not less than one third of the circumference of the long rod-shaped main body.

Further, the cross-sectional shape of the guide portion is crescent-shaped on a plane perpendicular to the length direction of the guide member.

Further, the guide member further includes:

and the cover part is provided with a second guide groove, the cover part can cover the guide part, and when the cover part covers the guide part, the first guide groove and the second guide groove are mutually spliced and completely surround the long rod-shaped main body in the circumferential direction.

Further, the cover part is hinged to the guide part;

alternatively, the covering portion is detachably connected to the guide portion.

Further, the covering part and the guiding part are detachably connected in a magnetic force adsorption or buckling connection mode.

Further, the micro-screw driver guide device further comprises:

the support piece is arranged on the fixing piece and hinged with the guide piece; or the support member is detachably connected with the guide member.

Further, one of the guide piece and the support piece is provided with a sliding groove, and the other one is provided with a clamping protrusion which is in adaptive sliding connection with the sliding groove;

in the sliding direction of the clamping protrusion, one end of the sliding chute is provided with an opening, and the other end of the sliding chute is provided with a blocking part;

the chute is characterized in that a through hole is formed in the wall of the chute, a spring and a ball are arranged in the through hole, the diameter of an orifice of the through hole is smaller than that of the ball, two ends of the spring are respectively abutted against the ball and the bottom of the through hole, the clamping protrusion enters the chute from the opening and slides towards the blocking portion until being abutted against the blocking portion, and the spring is tightly pressed on the surface of the clamping protrusion.

Further, one of the guide piece and the support piece is provided with a sliding groove, and the other one is provided with a clamping protrusion which is in adaptive sliding connection with the sliding groove;

in the sliding direction of the clamping protrusion, one end of the sliding chute is provided with a notch, and the other end of the sliding chute is provided with a blocking part;

the chute is characterized in that a through hole is formed in the wall of the chute, a spring and a ball are arranged in the through hole, the diameter of an orifice of the through hole is smaller than that of the ball, and two ends of the spring are respectively abutted against the ball and the bottom of the through hole;

the clamping protrusion enters the sliding groove from the notch and slides towards the blocking portion until the clamping protrusion abuts against the blocking portion, and the ball is pressed against the surface of the clamping protrusion under the reaction force of the spring.

Further, the support piece is kept away from the crooked setting in one side of mounting, the support piece keep away from one side rotation of guide set up in on the mounting, little screw driver guider still includes:

the knob is fixed on one side, far away from the guide piece, of the support piece, and angle scale marks are arranged on the knob.

Further, the support includes:

two supporting parts, wherein one supporting part is connected with the fixing piece, and the other supporting part is connected with the guide piece;

and the two ends of the adjusting part are respectively connected with the two supporting parts, and the adjusting part can rotate in multiple directions so as to adjust the orientation of the guide piece relative to the position between the fixing pieces.

In order to solve the technical problem, the application further provides a micro-screw driver tool kit, wherein the micro-screw driver tool kit is provided with the micro-screw driver guide device and the micro-screw driver.

Further, the micro-screw driver kit further comprises a limiter, the limiter comprising:

a fixed bracket for mounting on a tooth and/or on the fixture;

the limiting piece, the limiting piece with fixed bolster is connected, second guide way and the limiting groove of intercommunication have been seted up on the limiting piece, the second guide way is located the limiting groove with between the guide piece, the shape of second guide way with the handle head of little screw driver cooperatees, the handle head can use self axis to freely rotate as the axis of rotation on the second guide way, the limiting groove is used for when handle head is towards patient's tooth direction precession little screw the stroke volume of handle head.

Compared with the prior art, the application has the following technical effects:

the fixing piece is mainly used for being fixed on the teeth, for example, the shape of the fixing piece can be manufactured according to the occlusal surface of the teeth and the shape of the teeth, so that the fixing piece can be stably and fixedly connected with the teeth. The guide member is disposed on the fixing member, and the connection relationship between the guide member and the fixing member may be, for example, that the guide member is directly connected to the fixing member, or may be, for example, that the guide member is connected to the fixing member through another connection structure, which is not particularly limited herein.

In order to prevent the screwdriver from shaking in the process of implanting the micro-screw, the guiding piece is provided with a first guiding groove, and the first guiding groove extends and distributes along the length direction of the guiding piece and penetrates through the guiding piece. The long rod-shaped main body of the screwdriver can be placed in the first guide groove and guided and positioned by the first guide groove, so that the accuracy of the micro-screw implantation position and the path is ensured, and the risk of damaging the tooth root of the micro-screw can be greatly reduced. For example, a medical staff holds the handle and rotates the handle, at this time, the long rod-shaped main body of the screwdriver rotates in the first guide groove and freely rotates by taking the axis of the long rod-shaped main body as a rotation axis, and moves forwards or backwards along the length direction of the first guide groove (when a micro screw needs to be implanted, the long rod-shaped main body of the screwdriver moves forwards along the length direction of the first guide groove, and when the micro screw needs to be taken out, the long rod-shaped main body of the screwdriver moves backwards along the length direction of the first guide groove), so that the problem that the long rod-shaped main body of the screwdriver shakes is effectively avoided, microcracks in an alveolar bone are prevented, the stability of the micro screw is improved, and the falling rate is reduced.

In order to further improve the stability of the movement of the long rod-shaped body of the screwdriver, the first guide groove is also shaped to match the shape of the long rod-shaped body of the micro-screw screwdriver. When the long rod-shaped main body of the micro screw driver is placed in the first guide groove, the long rod-shaped main body of the micro screw driver is attached to the groove wall of the first guide groove, so that the phenomenon that the long rod-shaped main body of the micro screw driver shakes is avoided, and in the process of moving the long rod-shaped main body of the micro screw driver back and forth, the long rod-shaped main body of the micro screw driver always rotates along the axis of the long rod-shaped main body of the micro screw driver, and the micro screw is further accurately implanted on the alveolar bone of a patient.

The opening of the guide slot is generally toward the middle, so that an operator can directly see the contact between the handle and the guide slot, and the guide slot can not shield the micro screw and the implantation area, so that the doctor can ensure that the implantation position and the implantation direction of the micro screw meet the design requirements through visual and tactile dual guarantee and mutual verification.

The device generally adopts a full-digital design, and the implantation position, direction and path of the micro screw are accurately determined by fitting CBCT and oral scanning data of a patient, so that the safety and the accuracy of the device are ensured to the greatest extent.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a prior art micro-screw driver;

FIG. 2 is a schematic view of a prior art micro-screw driver head

FIG. 3 is a schematic view of a micro-screw driver guide according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a micro-screw driver guide according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a micro-screw driver guide according to an embodiment of the present utility model;

FIG. 6 is a schematic view of the structure of a guide in a micro-screw driver guide according to an embodiment of the present utility model;

FIG. 7 is a schematic view of the structure of a guide in a micro-screw driver guide according to an embodiment of the present utility model;

FIG. 8 is a schematic view of the structure of a guide in a micro-screw driver guide according to an embodiment of the present utility model;

FIG. 9 is a schematic view of the structure of a chute in a micro-screw driver guide according to an embodiment of the present utility model;

FIG. 10 is a schematic view of the structure of a through hole in a micro-screw driver guide according to an embodiment of the present utility model;

FIG. 11 is a schematic view of a micro-screw driver guide according to an embodiment of the present utility model;

FIG. 12 is a schematic illustration of a stop in a micro-screw driver kit according to an embodiment of the present utility model;

fig. 13 is a schematic view of a stop in a micro-screw driver kit according to an embodiment of the present utility model.

Reference numerals:

1. a handle head; 2. a long rod-shaped main body; 3. a handle; 10. a fixing member; 20. a guide member; 21. a guide section; 22. a cover part; 23. a magnet; 24. a clamping protrusion; 25. a spring; 26. a ball; 30. a support; 31. a blocking portion; 32. a knob; 33. an adjusting section; 40. a limiter; 41. a fixed bracket; 42. a limiting piece; A. a micro screw groove; B. a first guide groove; C. a second guide groove; D. a chute; E. a through hole; F. a second guide groove; G. and a limit groove.

Detailed Description

The following description of the embodiments of the present utility model will be made more clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

It will also be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The following describes the technical solutions in the embodiments of the present application in detail with reference to the drawings in the embodiments of the present application.

Microscrew is an implant commonly used in the field of orthodontic. One often tightens the handle 3 with a micro screw, which is rotated and fixed in the alveolar bone of the patient. Referring to fig. 1 and 2, the micro-screw tightening handle 3 generally includes three parts of a crown 1, a long rod-shaped body 2, and a handle 3, the crown 1 being provided with a micro-screw groove a for receiving a micro-screw. The head of the micro-screw is usually a polygonal prism structure, and the shape of the groove of the micro-screw is exactly consistent with the cross section of the prism structure, so that the micro-screw is matched with the micro-screw groove A on the micro-screw handle head 1.

In orthodontic treatment, the micro-screw is a commonly used device for assisting in strengthening anchorage. The clinical operation uses the micro-screw implantation operation to combine with CBCT three-dimensional observation as a main positioning mode according to the experience of doctors, and the precision is lower.

Clinically relevant medical risks often caused by implant position and path deviation, for example, a micro screw sometimes deviates from an ideal path during implantation, so that the micro screw contacts and even damages adjacent tooth roots, and temporary and even irreversible tooth damage is caused, which is a serious medical risk; in addition, the small shaking of the handle can cause microcracks in the alveolar bone, so that the stability of the micro screw is affected and the falling rate is increased.

Referring to fig. 1 and 10, in view of the foregoing, the present application provides a guiding device for a micro-screw driver to solve the above-mentioned problems.

Referring to fig. 3 and 5, a first embodiment of the present application provides a guiding device for guiding a micro-screw driver, which includes:

a fixture 10, said fixture 10 for mounting on a tooth, maintaining a stable retention;

the guide piece 20 is connected with the fixing piece 10, a first guide groove B is formed in the guide piece 20, the shape of the first guide groove B is matched with that of the long rod-shaped main body 2 of the micro screw driver, and the long rod-shaped main body 2 can freely rotate on the first guide groove B by taking the self axis as a rotation axis;

the micro screw driver is used for moving forwards and backwards along the length direction of the first guide groove B under the action of external force.

In this embodiment, the fixing element 10 is mainly used for fixing on teeth, for example, the shape of the fixing element 10 can be made according to the occlusal surface of the teeth and the shape of the teeth, so that the fixing element 10 can be stably and fixedly connected with the teeth. The guide 20 is disposed on the fixing member 10, and the connection relationship between the guide 20 and the fixing member 10 may be that the guide 20 is directly connected to the fixing member 10, or that the guide 20 is connected to the fixing member 10 by other connection structures, which are not particularly limited herein.

In order to prevent the screwdriver from shaking during the process of implanting the micro-screw, the guide piece 20 is provided with a first guide groove B, and the first guide groove B extends and distributes along the length direction of the guide piece 20 and penetrates through the guide piece 20. The long rod-shaped main body 2 of the screwdriver can be placed in the first guide groove B and guided and positioned by the first guide groove B. For example, a medical staff holds the handle 3 and rotates the handle 3, at this time, the long rod-shaped main body 2 of the screwdriver rotates in the first guide groove B and freely rotates by taking the axis of the main body as the rotation axis, and moves forwards or backwards along the length direction of the first guide groove B (when a micro screw needs to be implanted, the long rod-shaped main body 2 of the screwdriver moves forwards along the length direction of the first guide groove B, and when the micro screw needs to be taken out, the long rod-shaped main body 2 of the screwdriver moves backwards along the length direction of the first guide groove B), so that the accuracy of the implantation position and the path of the micro screw is ensured, and the risk of damaging the tooth root of the micro screw can be greatly reduced; meanwhile, the problem that the long rod-shaped main body 2 of the screwdriver shakes can be effectively avoided, microcracks are prevented from occurring in the alveolar bone, the stability of the micro screw is improved, and the falling rate is reduced.

It should be noted that, in order to further improve the stability of the movement of the long rod-shaped body 2 of the screwdriver, the present application further sets the shape of the first guide groove B to a shape matching the long rod-shaped body 2 of the micro-screw screwdriver. When the long rod-shaped main body 2 of the micro-screw driver is placed in the first guide groove B, the long rod-shaped main body 2 of the micro-screw driver is attached to the groove wall of the first guide groove B, so that the phenomenon that the long rod-shaped main body 2 of the micro-screw driver shakes is avoided, and in the process of moving the long rod-shaped main body 2 of the micro-screw driver back and forth, the long rod-shaped main body 2 of the micro-screw driver always rotates along the axis of the long rod-shaped main body 2 of the micro-screw driver, and the micro-screw is further accurately implanted on the alveolar bone of a patient.

It will be appreciated that the fixture 10 may be personalized to the tooth profile using CAD/CAM.

The first guide groove B may have a closed-loop structure such as a circular shape or a square shape, or may have an open-loop structure, for example, a U-shape.

Illustratively, the guide 20 includes:

and a guide portion 21, wherein the guide portion 21 is connected with the fixing member 10, the first guide groove B is arranged on the guide portion 21, and a part of the long rod-shaped main body 2 surrounded by the first guide groove B has a circumference of not less than one third of the long rod-shaped main body 2.

In this embodiment, the guide 20 further includes a guide portion 21, where the first guide groove B is formed on the guide portion 21, and the first guide groove B may have an open loop structure as described above, however, in order to avoid the problem of shaking the long rod-shaped body 2 of the screwdriver, the portion of the long rod-shaped body 2 surrounded by the first guide groove B has a circumference not less than one third of the long rod-shaped body 2.

After the long rod-shaped main body 2 is placed in the first guide groove B, the groove wall of the first guide groove B is enclosed on the peripheral wall of the long rod-shaped main body 2, and covers at least one third area of the peripheral wall of the long rod-shaped main body 2, so that the long rod-shaped main body 2 can be stably attached in the first guide groove B. In the process of the front-back movement of the long rod-shaped main body 2, the left-right direction of the long rod-shaped main body 2 is interfered by the first guide groove B, so that the long rod-shaped main body 2 cannot shake left and right, the problem that the long rod-shaped main body 2 of the screwing tool shakes is effectively avoided, microcracks in the alveolar bone are prevented, the stability of the micro screw is improved, and the falling rate is reduced.

Illustratively, the cross-sectional shape of the guide 21 is crescent-shaped in a plane perpendicular to the length direction of the guide 20. In this embodiment, the portion of the long rod-shaped main body 2 surrounded by the first guide groove B has a circumference of not less than one third of the long rod-shaped main body 2, so the first guide groove B is specifically concave, and the entire groove wall of the first guide groove B has an arc surface structure. Therefore, the cross-sectional shape of the guide portion 21 is a crescent-shaped structure on a plane perpendicular to the longitudinal direction of the guide 20.

It should be noted that, because the cross section of the first guiding groove B is of an open structure, one end of the first guiding groove B is open, and a medical staff can simply and conveniently place the long rod-shaped main body 2 of the screwdriver in the first guiding groove B.

It is understood that the guide portion 21 is obliquely disposed on the fixing member 10, for example, the guide portion 21 is disposed obliquely downward from the rear to the front, so that the guide portion 21 is prevented from blocking the view of the medical staff.

Referring to fig. 6 to 7, the guide 20 further includes:

and a cover 22, wherein a second guide groove C is formed in the cover 22, the cover 22 can cover the guide 21, and when the cover 22 covers the guide 21, the first guide groove B and the second guide groove C are engaged with each other and completely surround the long rod-shaped main body 2 in the circumferential direction.

In this embodiment, a cover 22 may be provided, and a second guiding groove C is formed in the cover 22, and after the cover 22 is covered on the guiding portion 21, the first guiding groove B and the second guiding groove C are spliced together to form a closed groove. It will be appreciated that the first guide groove B and the second guide groove C, when fitted to each other, may completely surround the peripheral wall of the long rod-shaped body 2.

When the medical staff needs to perform the micro screw implantation, the cover 22 can be opened, the long rod-shaped main body 2 is placed in the first guide groove on the guide part 21, and the cover 22 is covered on the guide part 21, so that the first guide groove B and the second guide groove C are spliced with each other to completely surround the peripheral wall of the long rod-shaped main body 2. The position of the long rod-shaped main body 2 is limited by the first guide groove B and the second guide groove C, so that the long rod-shaped main body 2 is prevented from shaking left and right and up and down. The problem that the long rod-shaped main body 2 of the screwdriver shakes is effectively avoided, microcracks are prevented from occurring in the alveolar bone, stability of the micro screw is improved, and the falling rate is reduced.

Illustratively, the covering portion 22 is hinged to the guiding portion 21; alternatively, the covering portion 22 is detachably attached to the guide portion 21. In this embodiment, the connection between the cover 22 and the guide 21 may be integrally hinged or may be separately provided.

For example, the covering portion 22 is connected to the guide portion 21 by a hinge structure so that the covering portion 22 can be opened or closed with respect to the guide portion 21. When the medical staff needs to use, the cover 22 is opened, the medical staff can place the long rod-shaped main body 2 of the turner in the first guide groove, and then the cover 22 is covered on the guide 21, so that the first guide groove B and the second guide groove C are spliced with each other to completely surround the peripheral wall of the long rod-shaped main body 2.

For another example, the cover 22 and the guide 21 are directly detachably connected, and the cover 22 and the guide 21 are separately provided. When the medical staff needs to use, the cover 22 is taken away from the guide 21, the medical staff can place the long rod-shaped main body 2 of the screwdriver in the first guide groove, and then cover the cover 22 on the guide 21, so that the first guide groove B and the second guide groove C are spliced with each other to completely surround the peripheral wall of the long rod-shaped main body 2.

It will be appreciated that both the mount 10 and the guide 20 may be provided as separate component structures, ready-to-use. Accordingly, the fixing member 10 may be made of a metal material so as to be fixed to the teeth by using the strength of the metal material, and the guide member 20 is mainly used to guide the long rod-shaped body 2 of the screwdriver, and thus the guide portion 21 may be formed using a 3D printing technique.

Of course, for the portion of the fixture that is occlusal to the patient's teeth, the shape may be 3D printed according to the occlusal portion of the patient's teeth.

Illustratively, the covering portion 22 is detachably connected to the guiding portion 21 by means of magnetic attraction or snap connection. In this embodiment, in order to stably assemble the cover 22 and the guide 21, the cover 22 and the guide 21 may be magnetically attached or snap-coupled. Specifically, the magnet 23 may be embedded in both the cover 22 and the guide 21, and when the cover 22 is covered on the guide 21, the cover 22 and the guide 21 may be stably assembled by the magnet 23.

Of course, one of the cover 22 and the guide 21 may be made of a metal material, and the magnet 23 may be embedded in the other, so that the cover 22 and the guide 21 can be stably assembled by the magnet 23.

Illustratively, the micro-screw driver guide further comprises:

a support 30, wherein the support 30 is arranged on the fixing member 10 and is hinged with the guide member 20; or the support 30 is detachably connected to the guide 20. In this embodiment, in order to facilitate adjustment of the position of the guide 20, a support 30 may be provided on the fixing member 10 to support the guide 20. After the fixture 10 is secured to the patient's teeth, the healthcare worker can adjust the orientation of the first guide slot by changing the angle between the guide 20 and the support 30. In addition, the support 30 may be detachably connected to the guide 20. Since the first guide groove is used for placing the long rod-shaped body 2 of the screwdriver, and the specification and the kind of the screwdriver are different, the size of the long rod-shaped body 2 of the different screwdrivers is also different, and thus, a plurality of different specifications of the guide 20 can be provided. The medical staff can select the corresponding guide 20 according to the specification and kind of the screwdriver and assemble on the support 30.

Referring to fig. 8 and 10, for example, one of the guide member 20 and the support member 30 is provided with a sliding slot D, and the other is provided with a clamping protrusion 24, and the clamping protrusion 24 is adapted to slide with the sliding slot D;

in the sliding direction of the locking protrusion 24, one end of the chute D has a notch, and the other end is provided with a blocking portion 31;

a through hole E is formed in the wall of the chute D, a spring 25 and a ball 26 are arranged in the through hole E, the diameter of the orifice of the through hole E is smaller than that of the ball 26, and two ends of the spring 25 are respectively abutted against the bottoms of the ball 26 and the through hole E;

the locking protrusion 24 enters the chute D from the notch and slides toward the blocking portion 31 until abutting against the blocking portion 31, and the ball 26 is pressed against the surface of the locking protrusion 24 by the reaction force of the spring 25.

In this embodiment, the guide member 20 may be provided with a sliding groove D, and the cross-sectional shape of the sliding groove D may be a dovetail structure, and correspondingly, the support member 30 is provided with a clamping protrusion 24, and the clamping protrusion 24 may be adapted to slide in the sliding groove D, so as to facilitate replacement of different guide members 20. In order to limit the position of the guide 20 on the support 30, the upper end of the chute D is provided with a through slot, and the lower end of the chute D is provided with a blocking portion 31, so as to prevent the guide 20 from being separated from the chute D when the medical staff assembles the guide 20. The medical staff slides the clamping convex 24 from the notch to push into the chute D and slides towards the blocking part 31 until the clamping convex abuts against the blocking part 31, and the assembly action is completed.

It should be noted that, in order to make the locking protrusion 24 tightly fit in the chute D, a through hole E may be formed on the wall of the chute D, and the spring 25 and the ball 26 may be placed in the through hole E in sequence. Since the diameter of the ball 26 is larger than the orifice diameter of the through hole E, the ball 26 cannot escape from the through hole E. In the initial state, both ends of the spring 25 are respectively abutted against the bottom of the through hole E and the balls 26, and are in the contracted state. The reaction force of the spring 25 drives the balls 26 continuously toward the orifice direction of the through hole E until a partial area of the balls 26 protrudes out of the through hole E.

After the clamping protrusion 24 is assembled in the chute D, the balls 26 are retracted into the through holes E by the extrusion force of the clamping protrusion 24, and the springs 25 are further compressed to generate a larger reaction force and act on the balls 26, so that the balls 26 are tightly pressed against the surface of the clamping protrusion 24, the clamping protrusion 24 is tightly pressed against the chute wall of the chute D under the stress, the friction force between the clamping protrusion 24 and the chute wall of the chute D is improved, and the clamping protrusion 24 is prevented from shaking in the chute D.

Illustratively, the support 30 is disposed to be curved away from the fixing member 10, and the support 30 is rotatably disposed on the fixing member 10 away from the guide member 20, and the micro-screw driver guide device further includes:

a knob 32, the knob 32 is fixed on the side of the support 30 away from the guide 20, and the knob 32 is provided with angle graduation marks.

In the present embodiment, the supporting member 30 is bent toward the guide member 20, and the supporting strength of the supporting member 30 is improved by the bent structure of the supporting member 30. The support 30 is also rotatably coupled to the fixing member 10 so that the medical staff can rotate to adjust the angle of the support 30.

It should be noted that, in order to facilitate the medical staff to accurately adjust the rotation angle of the support member 30, a knob 32 may be disposed on the support member 30, and scale marks may be disposed on the knob 32.

Referring to fig. 11, the support 30 includes:

two support parts (not shown), one of which is connected to the fixing member 10 and the other of which is connected to the guide member 20;

the adjusting part 33, two ends of the adjusting part 33 are respectively connected with two supporting parts, and the adjusting part 33 can rotate in multiple directions to adjust the orientation of the guide piece 20 relative to the fixing piece 10.

In this embodiment, an adjusting portion 33 is connected between two fixing portions of the support member 30, and the adjusting portion 33 may be made of a material having a certain soft property for adjusting the relative position of the guide member 20. Because clinically, when screwing down the micro-screw, it is sometimes necessary to implant the micro-screw at a certain depth in a straight line, and then change the angle to continue the implantation, the adjusting portion 33 may be a variable angle mechanism, and the adjusting portion 33 may set several angles or steplessly variable angles.

The utility model also proposes a micro-screw driver kit (not shown in the figures) having the micro-screw driver guide described above, as well as a micro-screw driver. The specific structure of the micro-screw driver guiding device refers to the above embodiments, and since the micro-screw driver tool kit adopts all the technical solutions of all the embodiments, at least the technical solutions of the embodiments have all the beneficial effects, and are not described in detail herein.

Referring to fig. 12, the micro-screw driver kit further includes a limiter 40, and the limiter 40 includes:

a fixing bracket 41, the fixing bracket 41 being for mounting on a tooth and/or on the fixing member 10;

the limiting piece 42, the limiting piece 42 with the fixed bolster 41 is connected, set up second guide way F and the spacing groove G of mutual intercommunication on the limiting piece 42, second guide way F is located spacing groove G with between the guide piece 20, second guide way F's shape with the handle head 1 of little screw driver cooperatees, handle head 1 can use self axis to freely rotate as the axis of rotation on the second guide way F, spacing groove G is used for when handle head 1 is towards patient's tooth direction precession little screw the stroke volume of handle head 1.

In this embodiment, in order to avoid excessive drilling of the crown 1 into the alveolar bone of the patient during the process of implanting the micro-screw, a stopper 40 may be provided, dedicated to limiting the amount of the screwing stroke of the crown 1.

The retainer bracket 41 of the retainer 40 may be secured to the patient's teeth and/or removably coupled to the anchor 10 and guide the retainer 42 to the lesion site of the patient. It should be noted that the second guide groove F and the limit groove G are both located on the same line as the first guide groove B, i.e. are both located on the rotation axis of the long rod-shaped body 2.

After the long rod-shaped main body 2 is placed in the first guide groove B, the handle head 1 of the micro-screw driver is placed in the second guide groove F, and the micro-screw slowly enters the limit groove G. After the long rod-shaped main body 2 is screwed into the direction of the teeth of a patient for a certain distance, the handle head 1 is abutted against the groove wall of the limiting groove G, and cannot advance towards the direction of the teeth, at the moment, the micro screw is implanted into the alveolar bone of the patient, and meanwhile, the handle head 1 is prevented from being excessively drilled into the alveolar bone of the patient.

It will be appreciated that each patient's teeth may be scanned by a digitizing device and the crown travel formation customized, and the limiter 40 made using a 3D printing device.

Referring to fig. 13, the guide 20 of the present application may also be directly connected to the fixture 10, and connected to the teeth by using the fixture 10, and simultaneously serves to guide the implantation of the micro-screw into the handle 1, as well as to limit the position.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

The above description of the preferred embodiments of the present utility model should not be taken as limiting the scope of the utility model, but rather should be understood to cover all modifications, variations and adaptations of the present utility model using its general principles and the following detailed description and the accompanying drawings, or the direct/indirect application of the present utility model to other relevant arts and technologies.

Claims (12)

1. A micro-screw driver guide for guiding a micro-screw driver, comprising:

a fixture for mounting on a tooth, maintaining a stable retention;

the guide piece is connected with the fixing piece, a first guide groove is formed in the guide piece, the shape of the first guide groove is matched with that of the long rod-shaped main body of the micro screw driver, and the long rod-shaped main body can freely rotate on the first guide groove by taking the axis of the long rod-shaped main body as a rotation axis;

the micro screw driver is used for moving forwards and backwards along the length direction of the first guide groove under the action of external force.

2. The micro screw driver guide of claim 1, wherein the guide comprises:

the guide part is connected with the fixing piece, the first guide groove is formed in the guide part, and the part, surrounded by the first guide groove, of the long rod-shaped main body has a circumference which is not less than one third of the circumference of the long rod-shaped main body.

3. The micro screw driver guide of claim 2, wherein the guide has a crescent shape in a cross-section in a plane perpendicular to the length direction of the guide.

4. The micro screw driver guide of claim 2, wherein the guide further comprises:

and the cover part is provided with a second guide groove, the cover part can cover the guide part, and when the cover part covers the guide part, the first guide groove and the second guide groove are mutually spliced and completely surround the long rod-shaped main body in the circumferential direction.

5. The micro screw driver guide of claim 4, wherein the cover is hinged to the guide;

alternatively, the covering portion is detachably connected to the guide portion.

6. The micro screw driver guide of claim 5, wherein the cover portion is detachably connected to the guide portion by magnetic attraction or snap connection.

7. The micro-screw driver guide of claim 1, further comprising:

the support piece is arranged on the fixing piece and hinged with the guide piece; or the support member is detachably connected with the guide member.

8. The micro-screw driver guide according to claim 7, wherein one of the guide and the support is provided with a chute, and the other is provided with a clamping protrusion, and the clamping protrusion is adapted to slide with the chute;

in the sliding direction of the clamping protrusion, one end of the sliding chute is provided with a notch, and the other end of the sliding chute is provided with a blocking part;

the chute is characterized in that a through hole is formed in the wall of the chute, a spring and a ball are arranged in the through hole, the diameter of an orifice of the through hole is smaller than that of the ball, and two ends of the spring are respectively abutted against the ball and the bottom of the through hole;

the clamping protrusion enters the sliding groove from the notch and slides towards the blocking portion until the clamping protrusion abuts against the blocking portion, and the ball is pressed against the surface of the clamping protrusion under the reaction force of the spring.

9. The micro screw driver guide of claim 7, wherein the support member is curved away from the side of the mount, the side of the support member away from the guide member is rotatably disposed on the mount, the micro screw driver guide further comprising:

the knob is fixed on one side, far away from the guide piece, of the support piece, and angle scale marks are arranged on the knob.

10. The micro screw driver guide of claim 7, wherein the support comprises:

two supporting parts, wherein one supporting part is connected with the fixing piece, and the other supporting part is connected with the guide piece;

and the two ends of the adjusting part are respectively connected with the two supporting parts, and the adjusting part can rotate in multiple directions so as to adjust the orientation of the guide piece relative to the position between the fixing pieces.

11. A micro-screw driver kit, characterized in that it has a micro-screw driver guide as claimed in any one of claims 1-10, and a micro-screw driver.

12. The micro screw driver kit of claim 11, further comprising a limiter, the limiter comprising:

a fixed bracket for mounting on a tooth and/or on the fixture;

the limiting piece, the limiting piece with fixed bolster is connected, second guide way and the limiting groove of intercommunication have been seted up on the limiting piece, the second guide way is located the limiting groove with between the guide piece, the shape of second guide way with the handle head of little screw driver cooperatees, the handle head can use self axis to freely rotate as the axis of rotation on the second guide way, the limiting groove is used for when handle head is towards patient's tooth direction precession little screw the stroke volume of handle head.