TWI487510B - An implant having a first internal thread and a second internal thread - Google Patents

Description

Dental implant with first internal thread and second internal thread

The present invention relates to a dental implant, and more particularly to a dental implant having a first internal thread and a second internal thread.

Referring to Figure 7, there is shown a schematic view of a conventional dental implant. The conventional dental implant 70 includes a fixing portion 71 and a connecting portion 72. The fixing portion 71 has a plurality of fins. The connecting portion 72 is disposed on the fixing portion 71 for connecting with a pillar body (not shown).

Since the fins extend parallel to the periphery, when the conventional implant 70 is implanted, it is implanted into the human bone by external force, and if it is taken out due to poor implantation angle or depth, The opening 73 of the conventional dental implant 70 is a smooth and unthreaded structure, and cannot be safely combined with a tool, so that it is difficult to operate clinically. And in the posterior temporal region, the conventional dental implant 70 may be pushed into the superior sinus.

Therefore, it is necessary to provide an innovative and progressive dental implant having a first internal thread and a second internal thread to solve the above problems.

The invention provides a dental implant having a first internal thread and a second internal thread, comprising: a fixing portion and a connecting portion. The fixing portion has an externally threaded region. The connecting portion is disposed on the fixing portion, the connecting portion has an opening, the opening has a first inner wall and a second inner wall, and the second inner wall is disposed under the first inner wall, The opening is for non-threaded connection with a pillar body, the second inner wall has a first internal thread and a second internal thread, the first internal thread The direction is different from the direction of the second internal thread for respectively engaging at least one transfer tool to implant or remove the dental implant.

Using the first internal thread and the second internal thread, the dental implant of the present invention can be screwed into or unscrewed from a human bone to facilitate clinical operation; and in clinical operation, the dental implant of the present invention It can be combined with the transfer tool and will not separate or fall off from the transfer tool, which can prevent the implant from falling off or pushing into the upper sinus.

The "upper" and "lower" mentioned in this article have nothing to do with gravity. "Up" is the occlusal or cut end of the sputum (for example, prosthesis) that is connected to the future, and the "down" is the opposite.

1 is a schematic view showing a dental implant having a first internal thread and a second internal thread according to the present invention. 2 is a schematic cross-sectional view showing a dental implant having a first internal thread and a second internal thread according to the present invention. Referring to FIG. 1 and FIG. 2, the dental implant 10 having the first internal thread and the second internal thread of the present invention comprises: a fixing portion 11 and a connecting portion 12. The fixing portion 11 has an externally threaded region. In the embodiment, the externally threaded portion of the fixing portion 11 is a right-handed thread.

The connecting portion 12 is disposed on the fixing portion 11 , and the connecting portion 12 has an opening 120 . The opening 120 has an opening in one of the top faces 13 of the dental implant 10 and extends downward. The opening 120 has a first inner wall 121 and a second inner wall 122. The second inner wall 122 is disposed under the first inner wall 121. The first inner wall 121 has no internal thread, and the opening 120 For connection with a pillar 50, the dental implant 10 and the pillar body 50 are connected by a locking taper type.

When the pillar body 50 and the dental implant body 10 are connected by a locking wedge pin type connection, the first portion 51 of the pillar body 50 is tapered, and the angle b thereof is slightly larger than the first hole 120 of the dental implant body 10. The upright angle a of the wall 121 is such that, when properly sized, an effective locking bond is produced. The utility model has the advantages of simple structure, convenient operation, good bacteria sealing property, and odor is not easy to be generated after the patient device. In addition, the first portion 51 of the pillar body 50 is only in contact with the first inner wall 121 and is not in contact with the second inner wall 122. The second portion 52 of the strut body 50 is for attaching a denture (not shown).

The second inner wall 122 has a first internal thread 123 and a second internal thread 124. The direction of the first internal thread 123 is different from the direction of the second internal thread 124 for respectively engaging at least one conveying tool. The implant 10 is implanted or removed.

Referring to Figure 3, there is shown a partially enlarged schematic view of the opening of the dental implant of the present invention. In the present embodiment, the first internal thread 123 is a right-handed thread, and the second internal thread 124 is a left-handed thread. Preferably, the first internal thread 123 intersects the second internal thread 124 to save space and avoid causing the second inner wall 122 to be too long. Moreover, the thread size of the first internal thread 123 and the second internal thread 124 is preferably wide and round to facilitate cleaning.

Because the first internal thread 123 and the second internal thread 124 are not in contact with the force when the pillar body 50 is connected in the future, the number of turns is not too much, so as to prevent the second inner wall 122 from being too long, so as to facilitate short planting. Preferably, the first internal thread 123 is one turn and the second internal thread 124 is one turn. And because the number of turns of the first internal thread 123 and the second internal thread 124 is small, the curvature is steep, and the thread of the wide circle is matched to make the first internal thread. 123 and the second internal thread 124 have a less clean dead angle, which makes cleaning easier in the future.

In this embodiment, the second inner wall 122 is a sloped surface that tapers toward the bottom of one of the openings 120. The first internal thread 123 and the second internal thread 124 also extend along the second inner wall 122 of the inclined surface to the bottom of the opening 120, and the first internal thread 123 and the second internal thread 124 are opened. The bottom of the hole 120 is a circle. Preferably, the second inner wall 122 along the inclined surface is from top to bottom, and the thread depth of the first internal thread 123 and the second internal thread 124 is shallow and deep, and the thread depth is formed into a longitudinal overall outer shape. The trajectory is consistent such that the transfer tool needs to be rotated one turn to disengage the first internal thread 123 and the second internal thread 124 to increase clinical safety.

Referring to Figure 4, there is shown a schematic illustration of implanting a dental implant of the present invention using a first delivery tool. The first conveying tool 20 has a first conveying rod 21 for inserting the opening 120. The outer diameter of the first conveying rod 21 is slightly smaller than the inner diameter of the first inner wall 121, and the profit is smoothly inserted into the opening. Inside the hole 120. The first connecting rod 21 includes a first external thread 211 that is shaped to fit the first internal thread 123 and is also a right-handed thread; and the externally threaded portion of the fixing portion 11 is also a right-handed thread. The first transfer tool 20 can gradually screw the dental implant 10 of the present invention into the human bone 40 to implant the dental implant 10 of the present invention into the human bone 40.

The first conveying tool 20 further includes a first structural weakening zone 22 disposed in a region of the first transfer bar 21, the outer diameter of the first structural weakening zone 22 being smaller than the outer diameter of the first transfer bar 21, The first transfer tool 20 may break in the first structural weakening zone 22 to prevent the first transfer tool 20 from being broken. The split occurs at the first external thread 211.

Referring to Figure 5, there is shown a schematic view of the removal of the dental implant of the present invention using a second delivery tool. The second conveying tool 30 has a second conveying rod 31 for inserting the opening 120. The outer diameter of the second conveying rod 31 is slightly smaller than the inner diameter of the first inner wall 121, and the profit is smoothly inserted into the opening. Inside the hole 120. The second transfer rod 31 includes a second external thread 311 that cooperates with the shape of the second internal thread 124 and is also a left-handed thread. Since the externally threaded region of the fixing portion 11 is a right-handed thread, if the dental implant 10 of the present invention is to be taken out in the opposite direction, the dental implant 10 of the present invention can be gradually used by the second conveying tool 30. The human bone 40 is unscrewed to take out the dental implant 10 of the present invention.

The second conveying tool 30 further includes a second structure weakening zone 32 disposed in a region of the second transfer bar 31. The outer diameter of the second structural weakening zone 32 is smaller than the outer diameter of the second transfer bar 31. The second transfer tool 30 may break in the second structural weakened zone 32 to prevent the second transfer tool 30 from breaking at the second external thread 311.

Referring to Figure 6, there is shown a schematic view of the dental implant of the present invention taken with a second transfer tool. After the dental implant 10 of the present invention is taken out by the second transfer tool 30, since the second external thread 311 is matched with the shape of the second internal thread 124, the dental implant 10 of the present invention is taken out from the human bone 40. The second external thread 311 of the second transfer tool 30 is still tightly coupled with the second internal thread 124 of the dental implant 10 of the present invention, so the dental implant 10 of the present invention is not removed or removed. Separating or falling off from the second conveying tool 30 can prevent contamination of the dental implant after it has fallen off.

Using the first internal thread 123 and the second internal thread 124, the tooth of the present invention The implant 10 can be screwed into or unscrewed from the human bone 40 for clinical operation, and the dental implant 10 of the present invention can be combined with the delivery tool during clinical operation without separation from the delivery tool. Or shedding, can avoid contamination of the implant after shedding, or avoid pushing the implant into the superior sinus.

The above embodiments are merely illustrative of the principles and effects of the invention and are not intended to limit the invention. Therefore, those skilled in the art can make modifications and changes to the above embodiments without departing from the spirit of the invention. The scope of the invention should be as set forth in the appended claims.

10‧‧‧Inventive dental implants

11‧‧‧ Fixed Department

12‧‧‧Connecting Department

13‧‧‧ top surface

20‧‧‧First delivery tool

21‧‧‧First transfer rod

22‧‧‧First structural weakening zone

30‧‧‧Second transfer tool

31‧‧‧Second transfer rod

32‧‧‧Second structural weakening zone

40‧‧‧ Human bones

50‧‧‧ pillar body

51‧‧‧Part 1

52‧‧‧Part II

70‧‧ ‧Identified dental implants

71‧‧‧ Fixed Department

72‧‧‧Connecting Department

73‧‧‧Opening

120‧‧‧opening

121‧‧‧First inner wall

122‧‧‧Second inner wall

123‧‧‧First internal thread

124‧‧‧Second internal thread

211‧‧‧First external thread

311‧‧‧Second external thread

1 is a schematic view showing a dental implant having a first internal thread and a second internal thread according to the present invention; and FIG. 2 is a schematic cross-sectional view showing a dental implant having a first internal thread and a second internal thread according to the present invention; A schematic partial enlarged view showing the opening of the dental implant of the present invention; FIG. 4 is a schematic view showing the implantation of the dental implant of the present invention by using the first conveying tool; and FIG. 5 is a schematic view showing the removal of the dental implant of the present invention by using the second conveying tool; Figure 6 is a schematic view showing the removal of the dental implant of the present invention by a second transfer tool; and Figure 7 is a schematic view showing a conventional dental implant.

10‧‧‧Inventive dental implants

11‧‧‧ Fixed Department

12‧‧‧Connecting Department

13‧‧‧ top surface

50‧‧‧ pillar body

51‧‧‧Part 1

52‧‧‧Part II

120‧‧‧opening

121‧‧‧First inner wall

122‧‧‧Second inner wall

123‧‧‧First internal thread

124‧‧‧Second internal thread

Claims (6)

A dental implant having a first internal thread and a second internal thread, comprising: a fixing portion having an externally threaded portion; and a connecting portion disposed on the fixing portion, the connecting portion having an opening, the opening The hole has a first inner wall and a second inner wall, the second inner wall is disposed under the first inner wall, the opening is for non-thread connection with a pillar body, and the second inner wall has a first An internal thread and a second internal thread, the direction of the first internal thread being different from the direction of the second internal thread for respectively engaging at least one conveying tool to implant or remove the dental implant. The dental implant of claim 1, wherein the first internal thread is a right-handed thread and the second internal thread is a left-handed thread. The dental implant of claim 2, wherein the first internal thread intersects the second internal thread. The dental implant of claim 2, wherein the first internal thread is configured to cooperate with a first external thread of a first transfer tool to implant the dental implant; the second internal thread is for use with a second One of the transfer tools is second externally threaded to remove the implant. The dental implant of claim 1, wherein the first internal thread is one turn and the second internal thread is one turn. The dental implant of claim 1, wherein the second inner wall is a bevel that tapers toward a bottom of one of the openings.