JPH08215219A - Combination structure of apparatus for endosseous implantation and handle - Google Patents

Abstract

PURPOSE: To provide a combination structure of an apparatus for endosseous implantation and a handle which ensures embedding into an embedding cavity formed accurately with higher operability. CONSTITUTION: In a combination structure of apparatuses 2 and 3 which are fitted into an endosseous implant 1 to embed the endosseous implant 1 by applying a torque and a handle 4 which is fitted into the apparatuses 2 and 3 for embedding to apply the torque thereto 2 and 3, the apparatuses 2 and 3 for embedding are provided with a hexagonal pyramid-shaped fitting part 3f tapered continuously closer to the upper tips of the apparatuses 2 and 3 and the handle 4 is provided with a hexagonal hole into which the fitting part 3f of the apparatuses 2 and 3 for embedding is fitted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an instrument used for implanting endosteal implants for dental and jaw prostheses.

[0002]

2. Description of the Related Art Conventionally, there are two types of endosseous implants used in the field of dentistry: a cylinder type having a cylindrical appearance shape and a blade type having a plate-like appearance form. Of these, the cylinder type intraosseous implants are cylindrical, conical and threaded (including taper threads)
There are three types of shapes. Each type of intraosseous implant is available in several lengths and diameters for the cylinder type and several plate shapes for the blade type so that the size and the like can be selected according to the jaw bone morphology of the patient.

When implanting such an intraosseous implant, first, an appropriate size and number suitable for the patient's jawbone morphology are selected, and an implant cavity is formed in a shape similar to or close to that of the intraosseous implant. After that, the intraosseous implant is press-fitted or screwed to be implanted.

As a method of screwing an intraosseous implant into an implant cavity, conventionally, a screw member for attaching to the intraosseous implant and a tubular member having a fitting portion into which a wrench or a handle is fitted are integrated. After attaching the implanting device to the intraosseous implant, the implanting device is rotated by a wrench or handle having a mouth or hole that fits with the above-mentioned fitting part, and the implant is implanted in the jawbone or the like. . Also, in order to avoid contact of the implanting device, wrench, handle, etc., with adjacent teeth or opposing teeth in a narrow oral cavity, the height of several types of implanting devices and implanting devices with different heights It uses different adapters to extend.

[0005]

However, the conventional combined structure of the implanting instrument and the wrench, the handle and the like has the following problems. First, when a wrench is used, it is possible to apply a large torque to the tubular member, but it is difficult to control the torque, so that the screw thread in the bone is cut and the implantation may not be successful. In particular, in the case of soft bone, it is difficult to understand the end position of the implant, that is, the position where the tip end portion of the intraosseous implant is seated in the implant cavity and the rotation resistance increases, and the thread may be cut.

On the other hand, when the handle is used, the torque can be detected by the tactile sensation of the fingers, which is superior to the case where the wrench is used in that the completion of the implantation can be grasped easily. However, since the mechanism for preventing the implantable device from falling out of the handle becomes complicated using a leaf spring, a ball plunger, etc., there is a problem in cleanability and cost. In addition, it is difficult to grasp the center of rotation when implanting an intraosseous implant, and the axis of rotation tends to tilt or move. Further, since the conventional metal handle has a large weight, there is a problem that it is not possible to fully grasp the change in torque when the implantation is completed.

Further, since the inside of the oral cavity is narrow, and there is a case where the implanting instrument and the handle interfere with each other when adjacent teeth or counter teeth are present, it becomes impossible to work. Therefore, conventionally, a tubular member having a plurality of lengths or The total length of the implantable device is adjusted by using different adapters, but it is complicated to replace these during work, and there is a risk of dropping them in the oral cavity. In addition, it is necessary to replace the tooth with an appropriate length at an appropriate time, but even if the total length is changed, interference with the adjacent teeth and the opposing teeth is unavoidable, and the operability is poor.

The object of the present invention is to provide an implant cavity that has been formed.
An object of the present invention is to provide a combined structure of an instrument for implanting an intraosseous implant and a handle for implanting accurately and with good operability.

[0009]

An embodiment will be described below in association with FIGS. 1 and 4. INDUSTRIAL APPLICABILITY The present invention relates to an intraosseous implant implanting device 2 or 3 for implanting the intraosseous implant 1 by being coupled to the intraosseous implant 1 and rotating, and an implanting device fitted to the implanting devices 2 and 3. It is applied to a combined structure with a handle 4 which gives a torque to a few. Then, the fitting portion 3f having a shape portion that becomes continuously thinner toward the tip of the upper portion is provided in the implanting devices 2 and 3, and is fitted with the fitting portion 3f, and the handle 4 and the implanting device are wedged. The above-described object is achieved by providing the handle 4 with the fitting holes 4a and 4b which are fixed to each other. The fitting portion 3f according to claim 2 is the fitting portion 3f according to claim 1, wherein the horizontal cross-sectional shape of the fitting portion 3f is N (N is 3).
The above natural number) is rectangular, and at least one of N side surfaces forming the fitting portion 3f has a tapered surface portion whose upper portion is inclined with respect to the central axis of rotation. The fitting portion 3f according to claim 3 is the fitting portion 3f according to claim 2, wherein one of the N side surfaces forming the fitting portion 3f is 1 degree or more and 15 degrees or less with the central axis of rotation. Has a portion in which the upper part is inclined toward the central axis and other N-1
The surface has an inclination of 0 degree or more and 15 degrees or less, and the upper portion has a portion inclined toward the central axis. A handle 4 according to a fourth aspect of the present invention is the handle 4 according to the first aspect of the present invention, in which a recess 4c for putting a finger is provided on the upper surface. The recessed portion 4c according to claim 5 is the recessed portion 4c according to claim 4, wherein the recessed portion 4c is 2 mm or more and 7.5 mm from the central axis of rotation.
It has an outer peripheral edge in the following region. The implanting instruments 2 and 3 according to claim 6 are the implanting instruments 2 and 3 according to claim 1, in which the fitting portion 3f has a vertical length of 5 mm or more. The fitting holes 4a and 4b according to claim 7 are the fitting holes 4a and 4b according to claim 1, wherein the upper and lower openings of the handle 4 are different in size.
Even if the handle 4 is turned upside down, it can be fitted with the implanting devices 2 and 3, and the fitting depth between the handle 4 and the implanting devices 2 and 3 can be changed by turning the handle 4 upside down. is there. The fitting holes 4a and 4b according to claim 8 are the fitting holes 4a and 4b according to claim 7 in which the fitting portion 4a provided only a predetermined length from the lower surface or the upper surface of the handle 4 and the fitting portion 4a. The non-fitting portion 4b is provided from the bottommost portion to the upper surface or the lower surface and is larger than the maximum width of the fitting portion. A handle 4 according to a ninth aspect is the handle 4 according to the first aspect, in which a missing portion is provided.

[0010]

[Operation] When the fitting portions 3f of the implanting devices 2, 3 and the fitting holes 4a of the handle 4 are fitted together, the implanting devices 2, 3 are wedged.
3 and the handle 4 are fixed, and the implantable devices 2, 3 do not fall out. Further, even if the handle 4 is moved up and down by a certain width, the fitting with the implanting instruments 2 and 3 does not come off (claim 1). When the depression 4c is formed on the upper surface of the handle 4, the rotation shaft is not shaken when the handle 4 is rotated by putting a finger on the depression 4c (claim 4). When the fitting holes 4a and 4b that penetrate the handle 4 in the vertical direction and have different sizes of the two openings are provided, the handle 4
When is reversed, the fitting depth between the implanting instruments 2, 3 and the handle 4 changes (claim 7). When the cutout portion 4d is provided in the handle 4, the handle 4 is made lighter (claim 9).

Incidentally, in the section of means and action for solving the above problems for explaining the constitution of the present invention, the drawings of the embodiments are used for making the present invention easy to understand. It is not limited to. In addition, claim 4,
The features of the handle described in 5, 7, 8 and 9 may also be provided in a handle for general endosseous implant surgery other than the handle described in each claim. Further, the characteristic portion of the implanting instrument described in claim 6 can be provided in an implanting instrument for general intraosseous implant surgery other than the implanting instrument described in each claim. .

[0012]

Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 shows an embodiment of an implanting device and an intraosseous implant according to the present embodiment, and reference numeral 1
Is an intraosseous implant, 2 and 3 are cylindrical members and screw members that constitute an implanting instrument, and 4 is an implanting handle.

As shown in FIG. 2, the intraosseous implant 1 has a substantially cylindrical shape having a screw hole 1a opened at the top. The screw hole 1a is for screwing with the male screw portion 3c of the screw member 3 shown in FIG. This intraosseous implant 1 is provided with a male screw 1c on the side surface of its cylinder for entering the implant cavity by screwing. Further, the upper structure fitting portion 1b for fitting with the cylindrical member 2 is provided on the upper part of the cylinder.
It has. The upper structure fitting portion 1b is used to attach the structure to the intraosseous implant 1 after implantation.

The cylindrical member 2 is made of pure titanium, for example, and is a cylindrical member having a through hole 2a vertically penetrating as shown in FIG. On the upper part of the inner side surface of the cylinder, a female screw portion 2b screwed with the male screw portion 3c of the screw member 3 shown in FIG. 4 is engraved. Further, a second jig engaging surface 2d having a hexagonal cross-sectional shape for engaging with a wrench at the time of removing the intraosseous implant is provided on the upper part of the outer surface of the cylinder, and an implanting part is embedded in the central part of the outer surface of the cylinder. The first jig engaging surface 2c having the above-mentioned hexagonal cross-sectional shape for engaging with the wrench when the instruments 2 and 3 are detached is provided on the lower portion of the outer side surface of the cylinder with an outer diameter smaller than the outer diameter of the implant 1. Each of the cylindrical portions 2f having a diameter is provided. Further, an outer peripheral contour is formed at the boundary between the second jig engaging surface 2d and the first jig engaging surface 2c and at the boundary between the first jig engaging surface 2c and the cylindrical portion 2f, respectively. A circular limiting portion 2e is provided so as to project. The lower end of the cylindrical portion 2f is provided with a groove 2g for indicating the position of the upper end surface of the sealing cap. This sealing cap is mounted on the intraosseous implant 1 after implantation to protect the upper surface thereof and to close the screw hole. Further, a fitting hole 2h for fitting with the upper structure fitting portion 1b of the intraosseous implant 1 is provided at the lower end of the cylindrical member 2, and the screw member 3 shown in FIG. 4 is provided at the upper end surface of the cylindrical member 2. Has an upper contact surface 2i which contacts the lower surface 3e of the head.

The screw member 3 is made of, for example, a titanium alloy,
As shown in FIG. 4, it comprises a head 3a and a shaft 3b integral with the head 3a. The shaft 3b has a male screw portion 3c screwed into the screw hole 1a, and a tip portion 3d having an outer diameter smaller than the inner diameter of the screw hole 1a and a length equal to or larger than the inner diameter of the screw hole 1a. On the lower surface of the head 3a, a head lower surface 3e that contacts the upper contact surface 2i of the cylindrical member 2 is formed.

As shown in FIGS. 4 and 5, a fitting portion 3f for fitting with the handle 4 is formed on the side surface of the head 3a. The fitting portion 3f constitutes a part of the hexagonal pyramid, and the apex of the hexagonal pyramid is on the rotation axis of the intraosseous implant 1 and the screw member 3 and above the screw member 3. The six faces sharing the apex of the hexagonal pyramid form an angle of 3 degrees with the rotation axis. The maximum width of the fitting portion 3f is D1, and the vertical length is L (7 mm).

As shown in FIG. 6, the handle 4 is a columnar member, and the handle 4 has a hexagonal prism-shaped hexagonal hole which is formed in the lower surface of the handle 4 and constitutes a fitting portion for fitting with the fitting portion 3f. 4a and the diameter of the outer circumference provided at the center of the upper surface is D3 (8
mm) conical recess 4c, a cylindrical hole 4b having a diameter of D2 which is opened in the recess 4c and constitutes a non-fitting portion, and a donut-shaped missing portion provided for the purpose of weight reduction. 4d are formed. However, cylindrical hole 4b
Has a diameter D2 larger than the maximum width D1 of the fitting portion 3f.

An explanation will be given of a case where the implantation of the intraosseous implant 1 by the above-mentioned implanting devices 2 and 3 is performed on a mannequin fitted with a jaw model and a face mask. First, the male screw portion 3c of the screw member 3 is screwed into the female screw portion 2b of the cylindrical member 2, and the male screw portion 3c is screwed in until the male screw portion 3c completely passes through the female screw portion 2b. In this state, the crests of the female screw portion 2b and the crests of the male screw portion 3c are in contact with each other, so that the cylindrical member 2 and the screw member 3 are not pulled out and separated from each other.

Next, the tip end portion 3d of the screw member 3 was dropped into the screw hole 1a of the intraosseous implant 1 while the cylindrical member 2 and the screw member 3 were integrated. At this time, since the length of the tip portion 3d is larger than the inner diameter of the screw hole 1a, the screw member 3
There is no danger of falling. Further, since the outer diameter of the tip portion 3d is slightly smaller than the screw hole 1a, the central axis of the male screw portion 3c of the screw member 3 and the central axis of the screw hole 1a of the intraosseous implant 1 are substantially coincident with each other. It can be easily fitted into the endosseous implant 1.

Subsequently, the fitting hole 2h of the cylindrical member 2 was fitted into the upper structure fitting portion 1b of the intraosseous implant 1.
Further, the head portion 3a of the screw member 3 is rotated with fingers, and the male screw portion 3c of the screw member 3 is screwed into the screw hole 1 of the intraosseous implant 1.
It was screwed into a.

After the implanting devices 2 and 3 and the intraosseous implant 1 were assembled together in this way, the implanting handle 4 was fitted to the head 3a of the screw member 3.

As described above, since the fitting portion 3f has a shape that constitutes a part of the hexagonal pyramid, the fitting portion 3f has the handle 4
The implanting devices 2 and 3 are fixed to the handle 4 by meshing with the hexagonal hole 4a of FIG.

Next, by operating the handle 4, the intraosseous implant 1 is conveyed to the implant cavity, and then the handle 4 is rotated by fingers to implant the intraosseous implant 1 in the implant cavity. When the handle 4 is rotated, the center of rotation can be easily grasped by pressing the ball of the index finger against the depression 4c on the upper surface of the handle 4. Since it is possible to rotate the handle 4 by grasping the side surface of the handle 4 with the thumb and the middle finger while applying the index finger to the depression 4c, the intraosseous implant 1 does not tilt or rotate eccentrically.

Further, as described above, the length L of the fitting portion 3f is 7 mm, and the handle 4 is about 3 m from the state of FIG. 7 (a).
Even in the case of FIG. 7 (b) which is shifted upward by m, the implanting device 2,
Since 3 can be rotated, adjacent teeth can be implanted without disturbing them. During implantation, the screw member 3 continues to rotate, while the cylindrical member 2 and the screw member 3 function as follows.

First, immediately after the above-mentioned assembly, since the male screw portion 3c of the screw member 3 is weakly screwed into the screw hole 1a of the intraosseous implant 1, that is, the tightening torque of the screw member 3 is small, Lower surface 3e of the head of the screw member 3
The surface pressure between the upper contact surface 2i of the cylindrical member 2 is low. Therefore, since the torque transmitted from the screw member 3 to the cylindrical member 2 is small, the cylindrical member 2 and the intraosseous implant 1 which are fitted with each other do not rotate. Therefore, the male screw part 3c of the rotating screw member 3 is screwed into the screw hole 1a of the intraosseous implant 1 which is stopped. When the male screw part 3c is screwed into the screw hole 1a more strongly, that is, when the tightening torque of the screw member 3 is increased, the head lower surface 3 of the screw member 3 is increased.
The surface pressure between e and the upper contact surface 2i of the cylindrical member 2 increases, and the torque transmitted by the dynamic friction between the two increases. As will be described later, at this time, the surface pressure between the lower surface of the cylindrical member 2 and the upper surface of the intraosseous implant 1 naturally increases.
When a certain surface pressure is reached, the torque required for implantation is obtained, and thereafter, the cylindrical member 2 fitted with the intraosseous implant 1 rotates together with the screw member 3, and the intraosseous implant 1 is implanted. . While the cylindrical member 2 and the screw member 3 rotate integrally, torque is transmitted by the static frictional force between the lower head surface 3e and the upper contact surface 2i.

On the other hand, the male screw portion 3c of the rotating screw member 3
As described above, the surface pressure between the lower surface of the cylindrical member 2 and the upper surface of the intraosseous implant 1 also increases while being screwed into the screw hole 1a of the intraosseous implant 1 that has stopped. Then, as described above, when the intraosseous implant 1 starts to rotate together with the cylindrical member 2, the surface pressure between the lower surface of the cylindrical member 2 and the upper surface of the intraosseous implant 1 has already increased. Therefore, the torque transmitted from the cylindrical member 2 to the endosseous implant 1 depends entirely or largely on the contact resistance between the lower surface of the cylindrical member 2 and the upper surface of the endosseous implant 1. Therefore, the upper structure fitting portion 1b of the intraosseous implant 1 is hardly applied with a torsion moment, and there is no possibility of deformation.

When the intraosseous implant 1 reaches the hard bone and the torque required for rotation exceeds the torque that can be transmitted by the static frictional force between the cylindrical member 2 and the screw member 3, again,
The cylindrical member 2 and the endosseous implant 1 are stopped. After that, the male screw portion 3c of the rotating screw member 3 is screwed into the screw hole 1a of the intraosseous implant 1 that is stopped, so that between the lower surface 3e of the head of the screw member 3 and the upper contact surface 2i of the cylindrical member 2. The surface pressure of becomes high. When the torque transmitted by the dynamic friction of both members exceeds the required value, the endosseous implant 1 starts to rotate again. At this time, the cylindrical member 2
The surface pressure between the lower surface of the bone and the upper surface of the intraosseous implant 1 is also higher. Thus, the greater the torque required for implantation, the higher the surface pressure between the lower surface of the cylindrical member 2 and the upper surface of the endosseous implant 1. Therefore, the static friction force between the two is also increased, and the torque is transmitted in whole or in large part by the static friction force, so that the upper structure fitting portion 1b of the intraosseous implant 1 is buried without exerting an unreasonable force. Planting is possible, and deformation of the upper structure fitting portion 1b is prevented.

FIG. 8 shows another embodiment of the handle. The handle 41, which is a cylindrical member, has a cylindrical hole 41b having a diameter of D2, which is opened on the lower surface thereof, and a conical recess 41c having a diameter of D3 (8 mm), which is provided at the center of the upper surface and has an outer diameter. A hexagonal prismatic hexagonal hole 41a opened in the recess 41c and fitted with the fitting portion 3f, and a donut-shaped missing portion 41d provided for the purpose of weight reduction are formed. However, the diameter D2 of the cylindrical hole 41b is larger than the maximum width D1 of the fitting portion 3f.

A case of implanting the intraosseous implant 1 using the handle 41 shown in FIG. 8 will be described. First, as shown in FIG. 9A, the hexagonal hole 41a was fitted to the fitting portion 3f of the implanting device 2, 3 with the opening of the cylindrical hole 41b as the lower surface. Since the diameter D2 of the cylindrical hole 41b is larger than the maximum width D1 of the fitting portion 3f as described above, when fitted in this direction, the lower end of the fitting portion 3f reaches the position where the lower end of the fitting portion 3f enters the inside of the cylindrical hole 41b. The handle 4 fits deeply. on the other hand,
When the handle 41 is turned upside down and fitted with the implanting instruments 2 and 3, both are fixed at the position where the opening of the hexagonal hole 41a and the fitting portion 3f are in contact with each other (Fig. 9 (b)). )). Therefore, the height position of the handle 41 is higher than that in the case of FIG. As described above, by selecting the orientation of the handle 41, the handle 41 and the implantable devices 2, 3
The fitting depth of can be adjusted. The handle 4 shown in FIG.
Also in the above, it is natural that the fitting depth can be similarly changed by reversing the handle 4.

As described above, the fitting depth can be continuously adjusted by shifting the handles 4 and 41, and the fitting depth can be changed by reversing the handles 4 and 41. Therefore, the height position of the handles 4 and 41 can be adjusted by arbitrarily changing the fitting depth with the single handle 4 and 41, and even if there are adjacent teeth or mating teeth, the implantation work can be performed easily. be able to.

The handles 4 and 41 are provided with cutout portions 4d and 41d for the purpose of reducing the weight, and such a weight reduction makes it easy to grasp the end position of the implantation. That is, since the handles 4 and 41 are lightweight, the torque that increases when the lower end of the intraosseous implant 1 is seated in the implantation cavity can be easily grasped by the sensation of the fingers.

Although the present invention has been described with reference to the embodiments, the present invention is not limited to the above embodiments. The fitting portion 3f of the implantable device 2, 3 according to the present invention includes various shapes. FIG. 10 shows the fitting part 3 of the implanting devices 2 and 3.
It is sectional drawing which shows the case where the horizontal cross-sectional shape of f is a hexagon.
FIG. 10 (a) shows a case where two facing sides of the side surface of the fitting portion 3f are inclined over the entire length L by an angle α, and FIG. 10 (b) shows only the lower L / 2 portion of the facing two sides. In the case of α tilting, FIG. 7C shows the case where only the lower side L / 2 of one side of the side surface of the fitting portion 3f is tilted by the angle β, and FIG. The case where an R surface is provided that gradually increases the inclination toward the lower end is shown.

Further, the cross-sectional shape of the fitting portion 3f is not limited to the hexagon, and for example, the horizontal cross-sectional shape of the fitting portion 3f may be a polygon other than the hexagon. In this case, the fitting portion 3f
Only one surface constituting the side surface may be tilted with respect to the central axis of rotation, or two or more surfaces may be tilted. When there are two or more surfaces, they may be two surfaces facing each other or all surfaces. Further, the entire side surface of the fitting portion 3f may be uniformly inclined or may be partially inclined. For example, in the upper part (the side farther from the intraosseous implant 1) of the side faces, the side face may be provided parallel to the rotation center axis, and only the lower part may be provided with the side face inclined.

When the horizontal cross-sectional shape is polygonal, the angle of inclining each side surface is 0 to 15 degrees, but at least one surface is 1 to 15 degrees, and the inclination of the other surface is 0 to 15 degrees.
When tilting only one surface, it is preferably 2 degrees or more and 15 degrees or less, and more preferably, 2 degrees or more and 6 degrees or less when tilting two surfaces or more. Furthermore, not only can the side surface be tilted at a certain angle, but, for example, the lower part of the side surface can be gradually tilted.
It may be a surface.

The horizontal section of the fitting portion 3f is not limited to the polygonal shape. The present invention is applied to various shapes in which the implanting devices 2, 3 and the handle 4 are engaged with each other by a wedge action when they are fitted together.

Generally, the distance to the abutment tooth is short at the posterior part, and when implanting in this part, with the intraosseous implant 1, the implanting devices 2, 3 and the handle 4 connected, It is necessary to keep the total length to 35 mm or less. The endosseous implant 1 used in the molar region is usually 12 to 15 mm.
Since the length is as follows, the length from the upper end of the intraosseous implant 1 to the upper end of the handle 4 needs to be 20 mm or less. In consideration of operability, the handle 4 has a thickness of 6 m.
It is necessary about m. Therefore, the total length L ₁ from the upper end surface of the intraosseous implant 1 to the lower end surface of the handle 4 at the time of fitting must be 14 mm or less (FIG. 11).

On the other hand, when implanting in the front tooth part, the range required for the above-mentioned total length L ₁ is different. That is,
The longest canine tooth has a length of about 11 mm, which is 4 m for bone resorption.
Considering m, the total length L ₁ from the upper end surface of the intraosseous implant 1 to the lower end surface of the handle 4 needs to be 15 mm or more. If the total length L ₁ does not reach 15 mm, the handle 4 may interfere with the adjacent teeth.

As described above, the permissible range of the total length L ₁ differs depending on the position of the implant, and there is no length that can correspond to all cases. Therefore, the implanting device 2,
3 or a plurality of implanting instruments unless the total length L ₁ can be changed by 2 to 3 mm or more by making the length of the handle 3 itself or the handle 4 itself variable. A few and adapters are needed.

In the embodiment, the length L of the fitting portion 3f is set to 7
By setting it to mm, the fitting depth can be changed. The length of the fitting portion between the handle 4 and the implanting devices 2 and 3 (fitting allowance) is 2 in order to transmit a sufficient torque.
It is desirable that the thickness is 3 mm or more. In addition, the variable length width is preferably about 2 to 3 mm in order to correspond to all the implantation positions.
Therefore, the length of the fitting portion 3f is preferably 5 mm or more. If the length is 5 mm or more, handle 4
Even if the handle 4 and the adjacent tooth interfere with each other during the implantation after the implantation is started by deeply fitting the
The handle 4 can be shifted upward by 3 mm or more, and the handle 4 can be separated from the adjacent teeth to continue implanting. Conventionally, several types of implanting materials and adapters have been used properly, but one set of implanting equipment and handle can handle all cases, eliminating mistakes in selecting materials and adapters and complicated replacement work.

Further, in the above-described embodiment, the fitting depth between the handle 4 and the implanting devices 2, 3 can be changed by turning the handle 4 upside down. In order to facilitate implantation, the hexagonal hole 4a should be adjusted so that the fitting depth changes by 1 mm or more.
It is desirable to select the shape of the cylindrical hole 4b. The fitting hole is not limited to the combination of the hexagonal shape and the cylindrical shape.
Further, in the embodiment, the case where the fitting holes 4a and 4b penetrate the handle 4 vertically and the handle 4 can be turned upside down has been described, but the present invention is also applied to the case where the fitting holes 4a and 4b do not penetrate. To be done.

The hollow portion 4c of the handle 4 is provided to drop the belly of the index finger when the handle 4 is rotated and to clarify the center axis of rotation. Therefore, in order to obtain such an effect, the ball of the finger does not have to be appropriately depressed and slipped out. Therefore, its outer diameter is 4 mm
It is preferably 15 mm or less and more preferably 6 mm or more and 10 mm or less. The shape of the recessed portion 4c may be a spherical crown, a spherical zone, a cone, a cylinder, a polygonal pyramid, a polygonal column, or the like, but a spherical crown, a spherical zone, or a cone is more preferable in consideration of the shape of the fingertip or the rotation.

The missing portion 4d reduces the weight of the implanting handle 4, but any portion can be shaved off as long as the function is not greatly affected.

In this embodiment, the fitting hole is composed of a hexagonal hole 4a and a cylindrical hole 4b. The fitting portion and the non-fitting portion each include a hexagonal hole 4a and a cylindrical hole 4b.

The matters described above regarding the handle 4 in the description of the embodiment are also applicable to the handle 41 unless it contradicts the nature of the matter.

The combined structure of the instrument for implanting an intraosseous implant and the handle of the present invention has the following effects. The fitting part of the implanting device has a shape portion which becomes continuously smaller as it approaches the upper end of the implanting device, and the fitting hole of the handle is formed so as to be fixed by fitting and wedge action. Therefore, it is possible to fix the implanting device and the handle while keeping the cleaning property of the implanting device high.
Further, even if the handle is moved up and down by a certain amount, the handle and the adjacent teeth can be prevented from contacting with each other because the device can be fitted with the implanting instrument (claim 1). Since the depression is formed on the upper surface of the handle, it is possible to suppress the shake of the rotating shaft by attaching a finger to the depression during implantation (claim 4). Since the fitting holes having the sizes of the two openings that penetrate the handle vertically are formed, the fitting depth between the implanting device and the handle can be changed by reversing the handle. Therefore,
The implanting work is facilitated without the need for implanting instruments or adapters of various lengths (claims 7 and 8). Since the handle is made lighter by forming the notch in the handle, an increase in torque at the end of implantation can be easily grasped (claim 9).

[Brief description of drawings]

FIG. 1 is a schematic view showing a combined structure of an endosseous implant and an implanting instrument and a handle of the present invention.

FIG. 2 is a cross-sectional view showing an endosseous implant.

FIG. 3 is a cross-sectional view showing a cylindrical member that constitutes the implanting device of the present invention.

FIG. 4 is a side view showing a screw member that constitutes the implanting device of the present invention.

FIG. 5 is a cross-sectional view showing an implanting device of the present invention.

FIG. 6 is a cross-sectional view showing the handle of the present invention.

FIG. 7 is a cross-sectional view showing a fitted state of the handle and the implanting device of the present invention.

FIG. 8 is a sectional view showing another handle of the present invention.

FIG. 9 is a cross-sectional view showing another handle of the present invention and the implanting device in a fitted state.

FIG. 10 is a cross-sectional view showing the shape of the fitting portion of the implanting device of the present invention.

FIG. 11 is a cross-sectional view showing a fitted state of an intraosseous implant, an implanting instrument, and a handle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Intraosseous implant 2,3 Implantation instrument 3f Fitting part 4 Handles 4a, b Fitting hole 4c Recessed part 4d Missing part

Claims (9)

[Claims] 1. An intraosseous implant implanting device for implanting the intraosseous implant by coupling with the intraosseous implant and rotating the same, and applying a torque to the implanting device by engaging with the implanting device. In a combined structure with a handle, the implanting device is provided with a fitting portion having a shape portion that becomes continuously thinner as it approaches the upper end, and the handle is fitted with the fitting portion and has a wedge shape. A combined structure of an intraosseous implant implanting instrument and a handle, characterized in that a fitting hole is provided so as to fix the handle and the implanting instrument by action. 2. The horizontal cross-sectional shape of the fitting portion is N (N is 3
The above natural number) is a polygon, and at least one of N side surfaces forming the fitting portion has a tapered surface portion whose upper portion is inclined toward the central axis of rotation. Structure of a device for implanting an intraosseous implant and a handle. 3. One of N side surfaces constituting the fitting portion has a portion inclined from the central axis of rotation by 1 ° or more and 15 ° or less and an upper portion has a portion inclined toward the central axis. And other N
The combination of the intraosseous implant implanting instrument and the handle according to claim 1, wherein the surface of -1 has an inclination of 0 degree or more and 15 degrees or less and an upper portion has a portion inclined toward the central axis. Construction. 4. The combined structure of an intraosseous implant implanting device and a handle according to claim 1, wherein a recessed portion for attaching a finger is provided in a central portion of an upper surface of the handle. . 5. The combination of an intraosseous implant implanting instrument and a handle according to claim 4, wherein an outer peripheral end of the recessed portion is in a region of 2 mm or more and 7.5 mm or less from a central axis of rotation. Construction. 6. The combined structure of an intraosseous implant implanting instrument and a handle according to claim 1, wherein the fitting portion has a length of 5 mm or more in the vertical direction. 7. The fitting hole penetrates the handle in the vertical direction, and the sizes of the upper and lower opening portions are different from each other, and the fitting hole can be fitted in the implantable device even when the handle is turned upside down. The combined structure of an intraosseous implant implanting instrument and a handle according to claim 1, wherein the fitting depth between the handle and the implanting instrument is changed by reversing. 8. The fitting hole has a fitting portion provided from a lower surface or an upper surface of the handle for a predetermined length and a maximum width of the fitting portion provided from a bottom portion of the fitting portion to an upper surface or a lower surface. The combination of the endo-osseous implant implanting device and the handle according to claim 7, which further comprises a large non-fitting portion. 9. The combined structure of an instrument for implanting an intraosseous implant and a handle according to claim 1, wherein the handle is provided with a missing portion.