KR102291283B1 - Ball joint type power transmission mechanic for guided dental implant surgery - Google Patents

Abstract

The disclosed invention relates to a ball joint type power transmission mechanism for implant-guided surgery, comprising: an implant surgical instrument having a cylindrical guide surface that is inserted into the guide part of a guide template for implant-guided surgery; and a driving mechanism having a rotation shaft that rotates by manpower or power so as to apply a rotational force to the implant surgical instrument, wherein the head of the implant surgical instrument is provided with a negative or positive first ball joint, the A positive or negative second ball joint corresponding to the first ball joint is provided at the front end of the rotation shaft of the driving mechanism, the second ball joint is detachably coupled to the first ball joint, and is guided with the rotation shaft The angle between the surfaces may be inclined within a certain angle based on a straight line, and the rotational force may be transmitted through a shear force acting on the contact surface formed between the first and second ball joints.

Description

Ball joint type power transmission mechanism in implant-guided surgery {BALL JOINT TYPE POWER TRANSMISSION MECHANIC FOR GUIDED DENTAL IMPLANT SURGERY}

The present invention relates to a ball joint type power transmission mechanism suitable for use in implant surgery, particularly implant-guided surgery using a guide template.

Implant-guided surgery refers to a surgery in which a surgical instrument is guided by an induction bushing applied to a guide template mounted in the mouth of a patient or an induction structure integrally formed in the guide template (hereinafter referred to as “induction portion”). See Patent Document 1). Guidance precision is determined according to the tolerance and the induction height between the surgical instrument and the induction unit, which are the induction objects, and more precisely, the guide surface of the surgical instrument and the induction surface of the induction unit. At this time, it is important to find the degree to which the tolerance is small, but not locked, and the longer the induction height is, the better, but the height enough to allow the surgical instrument to enter is important.

Here, the height enough to allow the surgical instrument to enter may be described as follows. When performing implant surgery where there are no teeth, if there is no guide template, the surgical instrument can directly access the surface of the gum or alveolar bone, so the patient does not need to open his or her mouth wide. However, in the state of wearing the guide template, the surgical instrument must be lifted up to the height of the induction unit and put into the guide surface. should be considered as subtracted.

For this reason, in implant-guided surgery, countermeasures and methods such as opening the patient's mouth wider by the height occupied by the induction part are required. In particular, as it goes to the posterior region, this phenomenon acts as a great inconvenience, and in the end, there are cases where induction surgery is not possible at all.

To solve this, if the height of the induction part is lowered, the inductivity is lowered, and the quality of implant-guided surgery itself becomes dangerous. The inductivity is lowered as much as it has been, and various problems have occurred such as the surgical instrument being caught on the incised interface, making it impossible to move, or causing friction and wear.

And, no matter how or how the surgical instrument is entered by solving the height of the induction part, in some cases, induction surgery can be performed without incising the gums. The head of the piece) may touch the opposite tooth.

This interference phenomenon is not only caused by the height of the gums, but may be caused by the Curve of Spee, that is, the characteristic occlusal arrangement in which the anterior part rises higher than the posterior part, or it may be caused by the implant placement direction. , sometimes occurs when the alveolar bone at the site of implantation melts relatively much and the difference in the position of the guide part with respect to the occlusal surface of the adjacent teeth is large.

The direction of induction surgery is misaligned due to such interference, or cold welding occurs due to friction between the guide surface and the surgical instrument. Departures also occur. In some cases, the same problem may occur because external force is generated by the movement of the patient or the movement of the hand.

Korean Patent No. 10-1807829 (registered on Dec. 5, 2017) Korea Patent Publication No. 10-2014-0044814 (published on April 15, 2014)

The invention as above, the problem to solve, because of the guide in the template elevated height conditions Needless to no, and the patient is spread interference excessive wear as by reducing the negative external force factor The purpose is to provide a new way to introduce surgical instruments.

The present invention relates to a ball joint type power transmission mechanism for implant-guided surgery, comprising: an implant surgical instrument having a cylindrical guide surface inserted into the guide part of a guide template for implant-guided surgery; and a driving mechanism having a rotation shaft that rotates by manpower or power so as to apply a rotational force to the implant surgical instrument, wherein the head of the implant surgical instrument is provided with a negative or positive first ball joint, the A positive or negative second ball joint corresponding to the first ball joint is provided at the front end of the rotation shaft of the driving mechanism, the second ball joint is detachably coupled to the first ball joint, and is guided with the rotation shaft The angle between the surfaces may be inclined within a certain angle based on a straight line, and the rotational force may be transmitted through a shear force acting on the contact surface formed between the first and second ball joints.

According to an embodiment of the present invention, the positive ball joint among the first and second ball joints has a polyhedral shape inscribed on the spherical surface, and the first gap formed by the polyhedron of the positive ball joint with respect to the spherical surface is The polygonal cross section of the negative ball joint is formed to be smaller than the second gap corresponding to the height of the chord formed with respect to the circumcircle.

A positive first ball joint may be provided on the head of the implant surgical instrument, and a negative second ball joint corresponding to the first ball joint may be provided at the distal end of the rotation shaft of the driving mechanism.

Alternatively, the head of the implant surgical instrument may be provided with a negative first ball joint, and a positive second ball joint corresponding to the first ball joint may be provided at the distal end of the rotation shaft of the driving mechanism, in which case the implant surgery A gripping step may be formed on the outer surface of the first ball joint of the mechanism.

And, when the driving mechanism is a handpiece operated by power, it may be preferable that the rotating shaft be directly connected to the handpiece without a shank.

And, further comprising an auxiliary handle coupled to the head of the implant surgical instrument, the auxiliary handle is to support the implant surgical instrument while allowing the detachment between the first and second ball joints and rotation of the implant surgical instrument. can

In a preferred embodiment of the present invention, the implant surgical instrument may include a tissue punch, an alveolar bone perforation drill, and a fixture guide mount.

The ball joint type power transmission mechanism of the present invention having the above configuration can easily enter the surgical instrument even in a high height condition due to the guide template for induction surgery, and the driving mechanism, for example, the handpiece head, is located around the Since it can not touch other oral structures, external force factors can be removed, and accurate operation is possible because it is relatively unaffected by the movement of the patient or hand. Therefore, the present invention makes it possible to properly express the induced surgical effect of a guide template that has been accurately manufactured with a lot of effort.

In addition, if the present invention is used, surgery that pursues biomechanical stability and prosthetic stability without compromising the establishment of a compromised surgical plan that inevitably corrects the best implant placement direction in order to secure a height enough for surgical instruments to enter An advantage arises in that the scheme can be applied to guided surgery.

1 is a view showing an embodiment of a ball joint type power transmission mechanism for implant-guided surgery according to the present invention.
Fig. 2 is a view showing another embodiment of the present invention;
Figure 3 is a view showing the power transmission mechanism of the ball joint type power transmission mechanism.
Fig. 4 is a diagram showing an embodiment in which an auxiliary handle is used together;
5 is a view showing an example of using a tissue punch as an implant surgical instrument.
Figure 6 is a view showing an example of using the fixture guide mount as an implant surgical instrument.
FIG. 7 shows various embodiments of the fixture guide mount of FIG. 6;

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, in describing the embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function interferes with the understanding of the embodiment of the present invention, the detailed description thereof will be omitted.

In addition, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the components from other components, and the essence, order, or order of the components are not limited by the terms. When it is described that a component is “connected”, “coupled” or “connected” to another component, the component may be directly connected or connected to the other component, but another component is between each component. It will be understood that may also be interposed and indirectly "connected", "coupled" or "connected".

Hereinafter, with reference to the accompanying drawings, a ball joint type power transmission mechanism for implant-guided surgery according to the present invention (hereinafter, simply referred to as a "ball joint type power transmission mechanism") will be described in detail.

Figure 1 is a view showing an embodiment of a ball joint type power transmission mechanism for implant-guided surgery according to the present invention, Figure 2 is a view showing another embodiment of the present invention.

As shown, the ball joint type power transmission mechanism of the present invention is a special device that transmits power between the implant surgical instrument 100 used for implant-guided surgery and the driving mechanism 200 that applies a rotational force to the implant surgical instrument 100. It's about structure.

The implant surgical instrument 100 refers to various surgical instruments 100 having a cylindrical guide surface 120 that is inserted into the guide portion 20 of the guide template 10 for implant-guided surgery and is guided. As described above, the implant surgical instrument 100 inserted into the guide part 20 provided in the guide template 10 is in a state where the cylindrical guide surface 120 and the guide part 20 form an appropriate tolerance with the progress direction and depth is induced.

The driving mechanism 200 refers to an instrument device having a rotating shaft 210 that rotates by manpower or power to apply a rotational force to the implant surgical instrument 100 . The driving mechanism 200 includes a handpiece 201 operated by electric power or pneumatics, and in addition, a torque wrench operated by manpower belongs to the driving mechanism 200 referred to in the present invention. Therefore, the driving mechanism 200 is not limited by whether the operation method is manual or automatic, and various instruments capable of applying a torque to the implant surgical instrument 100 inserted into the induction part 20 of the guide template 10 . It should be understood that all devices belong here.

The present invention has a special structure for transmitting power between the implant surgical instrument 100 and the driving instrument 200 . This power transmission structure is characterized in that it is a power transmission mechanism capable of tilting the first ball joint 130 and the second ball joint 220 corresponding to each other.

That is, the head 110 of the implant surgical instrument 100 is provided with a negative or positive first ball joint 130 , and the front end of the rotation shaft 210 of the driving mechanism 200 corresponds to the first ball joint 130 . A second ball joint 220 of a positive or negative type is provided. The second ball joint 220 may be detachably coupled to the first ball joint 130, and the angle between the rotation shaft 210 and the guide surface 120 may be inclined within a certain angle based on a straight line. The rotational force of the driving mechanism 200 is transmitted through the shear force acting on the contact surface formed between the first and second ball joints 130 and 220 while still present.

In other words, in the ball joint type power transmission mechanism of the present invention, the positive ball joint is detachably inserted or separated into the space of the negative ball joint, and the positive ball joint is the rotation shaft 210 and the guide surface in the negative ball joint. The first and the It is characterized in that the rotational force (driving force) is transmitted as a shear force acts on the contact surface between the second ball joints 130 and 220 .

As such, the rotation shaft 210 of the driving mechanism 200 is tilted with respect to the implant surgical instrument 100 to transmit a rotational force, so even in a height condition increased due to the guide template 10 for induction surgery, the surgical instrument 100. can be easily entered, and the driving mechanism 200, for example, the handpiece 201, can prevent the head from coming into contact with other surrounding oral structures, thereby eliminating the external force factor. In addition, it is relatively unaffected by the movement of the patient's or hand, enabling accurate operation. Therefore, the ball joint type power transmission mechanism of the present invention makes it possible to properly express the effect of induction surgery of the guide template 10 accurately manufactured with a lot of effort.

1 is a two-shaped first ball joint 130 is provided on the head 110 of the implant surgical instrument 100, and the front end of the rotation shaft 210 of the driving mechanism 200 corresponds to the first ball joint 130. An embodiment with a negative-shaped second ball joint 220 is shown.

Contrary to this, in Figure 2, the head 110 of the implant surgical instrument 100 is provided with a negative-shaped first ball joint 130, and the first ball joint 130 is provided at the distal end of the rotation shaft 210 of the driving mechanism 200. Shows an embodiment in which the second ball joint 220 of the positive shape corresponding to .

In this way, the power is transmitted even in a state in which the rotation shaft 210 of the driving mechanism 200 is tilted with respect to the implant surgical instrument 100 due to the cooperation of the positive ball joint and the negative ball joint, the implant surgical instrument 100 And the rotation shaft 210 of the driving mechanism 200, where to place the positive or negative ball joint can be said to be a kind of a matter of choice. However, it is more convenient to provide the first ball joint 130 of the positive shape to the head 110 of the implant surgical instrument 100 to hold and remove the implant surgical instrument 100 by hand in the oral cavity of the patient.

3 is a view showing a power transmission mechanism of a ball joint type power transmission mechanism. Referring to FIG. 3 , the positive ball joint among the first and second ball joints 130 and 220 has a polyhedral shape inscribed on the spherical surface (see FIG. 1 ), and the polyhedron of the positive ball joint is formed with respect to the spherical surface. The first gap d1 is formed to be smaller than the second gap d2 corresponding to the height of the chord formed with respect to the circumscribed circle in the polygonal cross section of the ball joint having a negative shape. As such, since the first gap (d1) in the positive ball joint is smaller than the second gap (d2) in the negative ball joint, insertion, release, and tilting are free, while the polygonal edges of the positive ball joint are the edges of the negative ball joint. As a shear force acts in contact with the polygonal side, rotational force can be transmitted.

For reference, the inlet of the negative ball joint is cambered so that there is no interference when the positive ball joint is tilted.

And, as shown in FIGS. 1 and 2 , when the driving mechanism 200 is a handpiece 201 operated by power, the rotating shaft 210 is directly connected to the handpiece 201 without a shank. It is preferable to be This is because, since the height of the handpiece 201 is lowered as much as there is no shank, it is much easier to operate the handpiece 201 so that the head does not touch other oral structures.

And, as exemplarily shown in FIG. 4 , it may further include an auxiliary handle 300 coupled to the head 110 of the implant surgical instrument 100 . Auxiliary handle 300 has a hole through the head 110 of the implant surgical instrument 100 is formed, so that detachment and tilting between the first and second ball joints 130 and 220 occurs freely, and also the implant surgical instrument While allowing the rotation of (100), the implant has a tolerance sufficient to support the surgical instrument (100). By using the auxiliary handle 300, even if the driving mechanism 200 applies a force in an oblique direction, it is possible to firmly support the implant surgical instrument 100, so that accurate induction surgery can be performed.

In various embodiments of the present invention, the implant surgical instrument 100 is a tissue punch 101 for concentrically incising the gums, a drill 102 for perforating the alveolar bone of various diameters shown in FIGS. 1 and 2 and 3, 6 and 7 may include a fixture guide mount 103 and the like. Of course, the present invention may also be applied to other types of implant surgical instruments not shown, and the drawings should be understood as illustrative.

It can be seen that the outer surface of all the illustrated implant surgical instruments 100 is provided with a cylindrical guide surface 120 . Here, the fixture guide mount 103 shown in detail in FIG. 7 means an induction part coupled to the fixture 400 to be implanted in the alveolar bone. The head of the fixture 400 is formed with a recess into which an abutment (not shown) is inserted and fixed, and the surface of this recess is a part that is intensively managed so that the abutment is in close contact (if there is a gap, bacteria, etc. breed). done). Therefore, the contact surface with the abutment is protected by providing a separate fixture guide mount 103 for receiving the rotational force of the driving mechanism 200 .

Here, referring to FIG. 7 of various embodiments of the fixture guide mount 103, the fixture guide mount 103 of the figure (a) has a gripping step 140 concave to the outer surface of the first ball joint 130 is formed. can confirm. This is because when the first ball joint 130 is formed in a negative shape, it is inconvenient to hold it by hand than in the case of the positive shape, so it is easy to grip by making the step 140 for gripping. Of course, the drawing shows a concave step for gripping 140, but it should be noted that a convex step for gripping (not shown) can also be applied in terms of improving the gripping function.

The above description is merely illustrative of the technical spirit of the present invention, and various modifications and variations will be possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

10: guide template 20: guide part
100: implant surgical instrument 101: tissue punch
102: drill for alveolar bone perforation 103: fixture guide mount
110: head 120: induction surface
130: first ball joint 140: step for gripping
200: drive mechanism 201: handpiece
210: rotation shaft 220: second ball joint
300: auxiliary handle 400: fixture
d1: first gap d2: second gap

Claims (7)

an implant surgical instrument 100 having a cylindrical guide surface 120 that is inserted into the guide portion 20 of the guide template 10 for implant-guided surgery and is guided; and
A driving mechanism 200 having a rotation shaft 210 that rotates by manpower or power so as to apply a rotational force to the implant surgical instrument;
Here, a negative or positive first ball joint 130 is provided on the head of the implant surgical instrument 100 , and a positive or negative first ball joint 130 corresponding to the first ball joint is provided at the tip of the rotation shaft of the driving mechanism 200 . 2 ball joint 220 is provided,
The second ball joint is detachably coupled to the first ball joint, and the angle between the rotation shaft 210 and the guide surface 120 may be inclined within a certain angle with respect to a straight line, while the first and A ball joint type power transmission mechanism for implant-guided surgery, characterized in that it can transmit the rotational force through a shear force acting on the contact surface formed between the second ball joints.
According to claim 1,
Among the first and second ball joints, a positive ball joint is formed in a positive polyhedral shape inscribed on a spherical surface,
The negative second ball joint has a negative polyhedral shape corresponding to the first ball joint,
The first gap formed by the polyhedron of the first ball joint of the positive shape with respect to the spherical surface is formed such that the polygonal cross section of the ball joint having the negative shape is smaller than the second gap corresponding to the height of the chord formed with respect to the circumscribed circle A ball joint type power transmission device for implant-guided surgery. delete According to claim 1,
The drive mechanism is a handpiece operated by power, and the rotation shaft is a ball joint type power transmission mechanism for implant-guided surgery, characterized in that it is directly connected to the handpiece without a shank. 3. The method of claim 1 or 2,
A negative first ball joint is provided on the head of the implant surgical instrument, and a positive second ball joint corresponding to the first ball joint is provided at the distal end of the rotation shaft of the driving mechanism,
The ball joint type power transmission mechanism for implant-guided surgery, characterized in that the gripping step (140, FIG. 7a) is formed on the outer surface of the first ball joint of the implant surgical instrument. According to claim 1,
It further includes an auxiliary handle 300 coupled to the head of the implant surgical instrument, wherein the auxiliary handle supports the implant surgical instrument while allowing detachment between the first and second ball joints and rotation of the implant surgical instrument. A ball joint type power transmission mechanism for implant-guided surgery, characterized in that. According to claim 1,
The implant surgical instrument is a ball joint type power transmission instrument for implant-guided surgery, characterized in that it includes a tissue punch, a drill for alveolar bone perforation, and a fixture guide mount.

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