WO2011037205A1 - Drill guide wrench - Google Patents

Abstract

A drill guide wrench used to guide a drill for forming a dental implant-forming cavity, the wrench guiding the drill to a guide sleeve which is provided to an implant-embedding guide and guides the formation of the implant-forming cavity. A drill guide wrench is provided with: a grip member extending in the longitudinal direction; an arm member provided at the distal portion thereof with a drill guide sleeve which always faces downward relative to the grip member and is offset downward in the proximal-distal direction; and a connection member for removably connecting the distal side of the grip member and the proximal side of arm member.

Description

Wrench for drill guide

The present invention relates to a drill guide wrench for guiding a drill, which is used to create an implant formation fossa, in an implant placement guide used when a dental implant is placed, to a guide sleeve.

2. Description of the Related Art In recent years, an implant placement guide prepared based on the detection of an appropriate position where an implant is placed in a jawbone in dental implant treatment has been provided. This implant placement guide is fitted on the dentition of each individual patient, and a guide sleeve is provided above the desired implant placement position, and a drill is guided through this guide sleeve to create an appropriate implant formation cavity. To do.

In the step of guiding the drill into the guide sleeve of such an implant placement guide, first, the tip of the drill is inserted into the guide sleeve, and a drill guide wrench as an auxiliary tool for guiding the drill to the guide sleeve. May be used.

The above-mentioned drill guide wrench is generally composed of an arm portion provided at the tip of a sleeve portion to be inserted into a guide sleeve of an implant placement guide and a grip portion to be a handle of a dentist. Had been offered.

Specifically, there is a drill guide wrench that connects an arm part and a gripping member with a ball joint so that the arm part can be moved freely and the arm part and the gripping part can be detached. In the case of this wrench, the sleeve portion can be freely moved and fixed by the ball joint, and at the same time, it can be easily replaced with an arm portion having a different sleeve portion.

However, in the case of the above-described drill guide wrench, the arm member and the gripping member may be coupled by a ball joint, which is expensive to manufacture and, as a result, is expensive.

Also, in other drill guide wrench manufactured to avoid this problem, the entire wrench is integrally molded, and there is inconvenience in drilling work for the implant formation fossa, and the arm member can be moved. However, there are problems such as being restricted by movement at a predetermined stage and being unable to move freely.

Japanese Patent Application Laid-Open No. 09-103437

The present invention has been created in view of the above problems, and does not require manufacturing costs. The arm member can be moved freely (steplessly), and the arm member and the gripping member can be easily moved. A drill guide wrench for guiding to a sleeve portion of an implant placement guide that can be removed and secured.

The present invention provides a drill guide wrench for guiding a drill used for creating an implant formation fossa to a guide sleeve in an implant placement guide having a guide sleeve for guiding the creation of a dental implant formation fossa. The guide sleeve includes not only a hollow tube shape but also a hook-shaped semi-tube shape.

The drill guide wrench includes a holding member extending in a longitudinal direction,
An arm member provided at the distal end with a guide sleeve disposed and offset in a direction perpendicular to the longitudinal direction of the gripping member;
Connecting means for detachably connecting the gripping member and the arm member at the distal side and the proximal side, respectively.

Moreover, it is preferable that the said holding member and the said arm member are formed with a plate-shaped member, are laminated | stacked on the up-down direction at each distal side and proximal side, and are connected by the said connection member.

The connecting member has a shaft member extending in a vertical direction, and the gripping member and the arm member regulate movement along a plane in which the connecting member is stacked via the shaft member, and at least around the shaft. It is preferably rotatable.

On the other hand, the connecting means has a shaft member that protrudes from one of the gripping member or the arm member toward the other, and the plane on which the gripping member or the arm member stacks the connecting member via the shaft member. A groove corresponding to the shaft member may be formed on the other of the gripping member or the arm member so that the movement along the axis is restricted, and at least around the axis can be rotated.

The shaft member may form a male screw structure projecting from one of the gripping member or the arm member, and the other of the gripping member or the arm member may have a through hole at a position excluding the shaft member when connected.

Furthermore, the connection member can have a female screw member fastened to the shaft member in the vertical direction.

The cross-sectional shape of the shaft member in the laminating plane has a wide portion and a narrow portion, and the other through hole of the grip member or arm member is formed with a diameter corresponding to the wide portion, and the grip member Alternatively, it is preferable that the other arm member is provided with an opening having a width corresponding to the narrow portion and connected to the through hole to reach the outside.

Further, the width of the shaft member has a wide portion and a narrow portion along the axial direction, and the through hole of the gripping member or the arm member is formed with a diameter corresponding to the wide portion, and further from the through hole A groove having a width corresponding to the narrow portion may extend.

According to the drill guide wrench of the present invention, the manufacturing cost is not required, the arm member can be moved freely (steplessly), and the arm member and the gripping member can be easily detached and fixed. it can.

It is a side view of an embodiment of a wrench for drill guide of the present invention. It is a top view of the wrench for drill guides of FIG. It is a top view of the holding member of the wrench for drill guides of this invention of FIG. It is a top view of the arm member of the wrench for drill guides of this invention of FIG. It is a side view of the arm member of the wrench for drill guides of this invention of FIG. It is a side view of the holding member of the wrench for drill guides of this invention of FIG. It is a top view of the holding member of the wrench for drill guides of this invention of FIG. It is a bottom view which shows the state which the arm member of the wrench for drill guides of this invention of FIG. 1 rotated. FIG. 2 is a schematic enlarged view in the vicinity of a connecting portion showing a rotation state of a gripping member and an arm member of the drill guide wrench of the present invention shown in FIG. 1. It is the schematic partial figure which showed the mode of the connection of other embodiment of the wrench for drill guides of this invention. FIG. 11 is a schematic partial view showing a gripping member of the drill guide wrench of FIG. 10. It is a partial fragmentary side view which showed the mode of the connection of the wrench for drill guides of FIG.

First, one embodiment of the drill guide wrench of the present invention will be described. 1 and 2, there are shown a side view and a top view of a drill guide wrench 10 according to this embodiment. As understood from this figure, the drill guide wrench 10 is generally composed of a gripping member 12, an arm member 14, and a connecting member 20 for connecting the both.

First, the gripping member 10 is a member that becomes a handle of a dentist. The gripping member 10 is formed of a plate-like member, and has a portion 12a having a shape that is easy to grip on the left side portion shown in FIGS. In the present embodiment, as shown in FIG. 2, the shape is a combination of two ellipses.

3 is a partial top view showing only the gripping member 12 in the top view of the drill guide wrench 10 shown in FIG. As shown in this figure, a hole 12a penetrating the plate member in the vertical direction is provided on the opposite side of the portion 12a, that is, on the end portion distal to the dentist. The through hole 12a has a narrow width in the longitudinal direction (left and right direction on the paper surface) of the gripping member 12 and a narrow width in the lateral direction (up and down direction on the paper surface) (a <b).

As shown in FIG. 3, the specific shape of the through-hole 12b is a shape obtained by cutting arcs in front and rear in the longitudinal direction (both ends in the left-right direction on the paper surface) of a circular hole having a diameter b.

Next, the arm member 14 will be described with reference to FIGS. 1, 4, and 5. 4 is a top view showing only the arm member 14, and FIG. 5 is a side view of the arm member 14 of FIG. First, as shown in FIG. 1, the arm member 14 is connected to the distal side (right side of the paper) of the gripping member 12 on the proximal side (left side of the paper). This connection method will be described later.

The arm member 14 is offset downward toward the distal side in the longitudinal direction. This is directed downward with respect to the gripping member 12 so as to easily guide a sleeve portion 16 (described later) to a guide sleeve of an implant placement guide (not shown) disposed on the jawbone.

Further, a sleeve portion 16 is disposed downward at the distal end of the arm member 14. Referring to FIG. 4, it can be seen that the sleeve portion 16 is a hollow cylindrical member penetrating in the vertical direction and protrudes downward from the distal end portion of the arm member 14.

The sleeve portion 16 is formed by inserting a guide sleeve into the through-hole 16a of the sleeve portion 16 by being inserted into the guide sleeve of the implant placement guide at the stage of creating the implant formation pit. Therefore, as shown in FIGS. 4 and 5, when the outer diameter of the sleeve portion is φc and the inner diameter is φd, the inner diameter of the guide sleeve of the implant placement guide is φ (c + α): α is a play at the time of interpolation. The outer diameter of the drill is
φ (d−β): β is a clearance normally provided when a drill is inserted.

In order to create an implant formation cavity, it is common to first drill a hole with a thin diameter drill and then use a drill with a diameter corresponding to the implant formation cavity. Therefore, the outer diameter of the sleeve portion 16 of the arm member 14 is prepared in accordance with the implant placement guide, and the inner diameter of the sleeve portion 16 corresponds to the outer diameter of the drill for creating the implant formation fossa. A plurality of arm members 14 are prepared. In the drill guide wrench 10 of the present embodiment, a plurality of arm members 14 having sleeves with inner diameters corresponding to the respective drills are prepared, and the arm members 14 can be easily adapted to a plurality of types of drills by simply changing the arm members 14 according to the drills. A wrench for a doyle guide can be provided.

In addition, as shown in FIG. 4, the arm member 14 is provided with a slit 18 for connection to the gripping member 12 in the vicinity of the proximal end (left side of the drawing). The slit 18 includes a circular hole 18a and a parallel opening 18b. The diameter of the circular hole 18a is substantially the same as the length a on the wide side of the through hole 12b of the arm member 12, and the width of the parallel opening 18b. Is substantially the same as the length a on the narrow side of the through hole 12b of the arm member 12.

Next, the connection between the gripping member 12 and the arm member 14 will be described. 6 shows a top view of the gripping member 12 provided with the connecting member 20, and FIG. 7 shows a side view of the gripping member 12 of FIG. The connecting member 20 includes a male screw-shaped portion 20a configured by combining the wide portion and the narrow portion as described above, and a female screw-shaped portion 20b that is screw-coupled thereto.

As is clear from FIGS. 1 and 6, the male screw-shaped portion 20a penetrates so that the screw tip extends from the lower side to the upper side of the holding member 12, and the arm member 14 and the holding member in order from the lower side. 12 is fixed by a female screw-shaped portion 12b.

Referring to FIG. 8, a bottom view of the drill guide wrench 10 showing a state in which the arm member 14 is rotated by 45 ° with respect to the gripping member 12 is shown. Note that the head portion of the male screw-shaped portion 20a is omitted for easy visual recognition. When the internal thread shape portion 20b is loosened, the space between the external thread shape portion 20b of the external thread shape portion 20a is widened, and the arm member 14 can be rotated with respect to the grip member 12 to a desired position.

The rotation center at this time is the shaft portion of the male screw-shaped portion 20a passing through the through hole 12b (see FIG. 3) of the gripping member 12 and the circular hole 18a (see FIG. 4) of the arm member 14. Further, the cross-sectional shape of the shaft portion of the male screw-shaped portion 20a has the same shape so as to be fitted to the through hole 12b of the gripping member 12, and the female groove is provided in the wide portion, that is, the arc-shaped portion. The screw shape portion 20b is screwed.

Next, the removal of the arm member 14 from the gripping member 12 will be described. As described above, the opening 18 of the arm member 14 is formed by the circular hole 18a and the parallel opening 18b (see FIG. 4), and when the gripping member 12 and the arm member 14 are connected, the opening 18, particularly circular. The shaft portion of the male screw-shaped portion 20a is inserted into the hole 18a.

Referring to FIG. 9, the connection state (insertion state) between the opening 18 of the arm member 14 and the male screw-shaped portion 20 a of the connection member 20 is shown in an enlarged manner. In FIG. 9, the gripping member 12 is omitted for easy understanding.

Referring to FIG. 9A, the positional relationship between the male screw-shaped portion 20a and the opening 18 when the arm member 14 and the gripping member 12 are connected so as to be in a straight line as shown in FIGS. Is shown. In this state, since the wide side of the male screw-shaped portion 20a is substantially the same as the diameter of the circular hole 18a, the movement is restricted on the plane of the drawing.

Next, as shown in FIG. 9B, the arm member 14 is rotated clockwise (in FIG. 9, the male screw shape portion 20a is rotated counterclockwise). In the case of this figure, the rotated angle is less than 90 °, and the arm member 14 is restricted from moving on the plane of the paper, particularly in the left direction of the paper, as in FIG. 9A.

In FIG. 9C, the arm member 14 is further rotated clockwise. Specifically, it shows a state rotated 90 °. In this state, the narrow side of the male screw-shaped portion 20a is in a positional relationship in series with the parallel opening 18b. Therefore, when the movement in the left-right direction on the paper surface (in the direction of the paper surface arrow) regulated in FIGS. 9A and 9B is released and the arm member 14 is moved to the right side with respect to the male screw-shaped portion 20a, Both can be removed.

Therefore, in the rotation range of the arm member 14 at a predetermined angle, the connection between the arm member 14 and the gripping member 12 is maintained, and the arm member 14 can be easily removed by rotating the arm member 14 by the predetermined angle.

Therefore, when preparing the sleeve portions 16 of the arm members 14 for different inner diameters, by preparing the arm members 14 that are integrated with the sleeve portions 16 having different inner diameters, each arm member 14 can be easily attached and detached, and drilling is performed. Correspondence according to the diameter becomes easy.

In the case of the above-described embodiment, the male screw-shaped portion 20a is connected to and released from the opening 18 of the arm member 14 by making the shape of the male screw-shaped portion 20a wide and narrow. The first portion of the circular cross section having a circular cross section and having a diameter substantially the same as the diameter of the circular opening 18a in the axial direction, and the first portion of the circular cross section having a diameter substantially the same as the width of the parallel opening integrally connected thereto in the axial direction. You may comprise as two parts.

In this case, by moving up and down in the axial direction, the first part is inserted into the circular opening 18a when the arm member 14 and the gripping member 12 are connected, and the second part is removed through the parallel opening 18b when removed. be able to.

An example of another drill guide wrench 100 will also be described. Since this drill guide wrench 100 is characterized by a connecting member and the other parts are the same as the drill guide wrench 10, the vicinity of the connecting member will be described here.

10A shows the arm member 114 in the vicinity of the connecting member in FIG. 10A, and FIG. 10B shows the state in which the arm member 114 and the gripping member 112 are connected as seen from above. FIG. 11 shows the through holes 112 and 112b of the gripping member 112.

Further, as can be seen from FIG. 10 (a), the end of the arm member 114 is provided with a projecting portion 120 extending upward, and a wide portion 120a having a male screw structure and a narrow portion 120b having a small diameter in order from the top. It is formed with. When the protruding portion 120 is inserted into the through hole 112a (see FIG. 11) from below, the wide portion 120a and the narrow portion 120b are inserted into the through hole 112a, and the upper surface of the arm member 114 and the lower surface of the gripping member 112 come into contact with each other. . Furthermore, when the narrow portion 120b is slid leftward (in the direction of the arrow in FIG. 11) in the contact state, the diameter of the wide portion 120a is larger than the through hole 112b, so that the arm member 114 does not fall out of the gripping member 112.

After that, the arm member 112 and the gripping member 114 are overlapped with each other so that the female screw member 112 is fitted to the wide portion 120a from above as shown in FIG. The Rukoto.

DESCRIPTION OF SYMBOLS 10 Drill guide wrench 12 Gripping member 12a Through hole 14 Arm member 16 Sleeve part 18 Opening 20 Connecting member

Claims (7)

A drill guide wrench for guiding a drill used to create an implant formation cavity in a guide sleeve having a guide sleeve for guiding the creation of a dental implant formation cavity, to the guide sleeve,
A gripping member extending in the longitudinal direction;
An arm member provided at the distal end with a guide sleeve disposed and offset in a direction perpendicular to the longitudinal direction of the gripping member;
A drill guide wrench comprising: a connecting means for detachably connecting the gripping member and the arm member on the distal side and the proximal side, respectively. 2. The drill according to claim 1, wherein the gripping member and the arm member are stacked in a vertical direction on each of the distal side and the proximal side and connected by the connecting member, and each is formed by a plate-like member. Guide wrench. The connecting member has a shaft member extending in the vertical direction, and the gripping member and the arm member are restricted from moving along a plane in which the connecting members are stacked via the shaft member, and rotate at least around the shaft. The drill guide wrench according to claim 2, wherein the wrench is possible. The cross-sectional shape of the shaft member in the laminating plane has a wide portion and a narrow portion, and the other through hole of the grip member or arm member is formed with a diameter corresponding to the wide portion, and the grip member The drill guide wrench according to any one of claims 1 to 3, wherein the other arm member is provided with an opening having a width corresponding to the narrow portion and connected to the through hole to reach the outside. The connecting means has a shaft member that protrudes from one of the gripping member or the arm member toward the other, and the gripping member or the arm member is on a plane on which the connecting member is stacked via the shaft member. 2. The drill according to claim 1, wherein a groove corresponding to the shaft member is formed in the other of the gripping member or the arm member so as to restrict movement along the axis and to be rotatable at least around the axis. Guide wrench. The width of the shaft member has a wide portion and a narrow portion along the axial direction, and the through hole of the gripping member or the arm member is formed with a diameter corresponding to the wide portion, and further, the narrow width from the through hole. The drill guide wrench according to claim 2, wherein a groove having a width corresponding to the portion extends. The shaft member forms a male screw structure protruding from one of the gripping member or the arm member, and the other of the gripping member or the arm member has a through hole at a position excluding the shaft member when connected,
4. The drill guide wrench according to claim 2, wherein the connecting member has a female screw member fastened to the shaft member in the vertical direction.

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