Externally driven implant device for flexible collar implants

Abstract

An external drive device (100) for a bendable shaft neck implant comprises a male fastener (29) constructed as a rigid and integral unit, comprising an implant screw (17), a shaft neck (15), and a male screw top driver (27) for operating in conjunction with a female tool (31) or female driver (31) supporting a female screw top driver (33). The female driver (31) is configured to apply implantation torque to the implant screw (17) via the male screw top driver (27), which is disposed distally away from the shaft neck (15). Thus, implantation performed using the external driver (device 100) prevents torque from being applied to the shaft neck (15) and mitigates fracture of the shaft neck (15).

Description

Technical Field

[0001] Embodiments of the present invention relate to the field of medical implants, such as orthopedic implants and dental implants, and in particular to flexible-collar dental implants. Background Art

[0002] Medical implants, such as orthopedic implants and dental implants, have been known per se for many years. A wide variety of conventionally available dental implants and tools for implantation can be found in catalogs, such as the Noris Medical Dental Implants Product Catalog 2019 published on the Internet: https: / / norismedical.com / products / catalog-2, pages 28-29, under the name Mono.

[0003] Korean Patent No. 200373710Y1 issued on January 21, 2005 to Moon Young Pil and US Patent Application No. 2006275735 issued to Bulard et al. describe dental implants with a journal, but require different tools for implantation and for bending. Summary of the invention

[0004] Embodiments of the present invention are directed to an externally driven implant device 100 for a flexible journal implant. Embodiments include a male fastener 29 or a single-piece implant 29 that is constructed as a rigid and integral entity that includes an implant screw 17 and a journal 15. Embodiments also include a male screw top driver 27 that is configured to operate in conjunction with a female tool 31 or female driver 31 that supports a female screw top driver 33. The female driver 31 is configured to apply implant torque to the implant screw 17 via the male screw top driver 27 that is disposed distally away from the journal 15. Thus, implantation performed using the external drive device 100 prevents torque from being applied to the journal 15 and mitigates fracture of the journal.

[0005] A method is also provided for constructing an external drive device 100 for a flexible neck implant 10, the flexible neck implant comprising a flexible neck 15 and an implant screw 17. The male fastener 11 and the female driver 31 operate in an interrelated manner for implantation of the implant screw 17 and for bending the neck 15. The female driver 31 operates to apply implantation torque to the male screw top driver 27 (which forms an integral proximal portion of the implant screw 17) to avoid applying torque to the flexible neck 15 and to slow down fracture of the flexible neck.

[0006] There is also provided an external drive device 100 for a flexible shaft neck implant, which includes a short flexible shaft neck implant 50 forming a male fastener 29, and a female drive member 32. The male fastener 29 supports the flexible shaft neck 15, the male screw top drive member 27, and the implant screw 17 for implantation by applying implantation torque. Therefore, the female drive member 32 is configured to apply the implantation torque to the male screw top drive member 27 to prevent the torque from being transmitted to the shaft neck 15.

[0007] Finally, a method for constructing an external drive device 100 for a bendable-collar implant is additionally provided, the external drive device comprising a short bendable-collar implant 50 forming a male fastener 29 , and a female driver 31 .

[0008] Technical issues

[0009] The conventional bendable neck implant 10 can be briefly described as having mainly Figure 1 Four sequential parts are shown from the proximal PRX to the distal DST direction and include: a male head driver 23, an abutment 13, a flexible shaft neck 15, and an implant screw 17. The male fastener 29 of the present disclosure may include from the proximal PRX to the distal DST direction: a male head driver 23, an abutment 13, a flexible shaft neck 15, a male screw top driver 27, and an implant screw 17, which are shown aligned along the axis X. Such nomenclature of the flexible shaft neck implant 10 will be clearly understood by those skilled in the art and therefore does not require description.

[0010] Typically, for implantation, a female tool engages the male head driver 23 to torque and implant the flexible collar implant 10, and then a universal tool (not shown) is used to bend the flexible collar 15 to the desired direction.

[0011] To illustrate this problem, Figure 1 The main parts of a flexible neck implant 10 of the prior art are shown schematically, without going into details that are not relevant to the problem at hand. The neck 15 of the flexible neck implant 10 is first subjected to the torsion and forces of implantation, and then to the strains and stresses of the bending moment for bending applied to the neck after implantation. The neck 15 should be as strong as possible in order to withstand the forces and moments, and therefore have, for example, a large cross-section. However, the neck 15 should preferably be pliant in order to be easy to bend, and therefore have a relatively small cross-section. These two requirements are quite contradictory. The actual result is that the neck 15 is the weakest link or part of the flexible neck implant 10, and therefore this part is essentially the most susceptible to breakage and in fact often breaks.

[0012] Figure 1 A conventionally available flexible neck implant 10 is shown having a proximal implant convex head driver 23 held outside the body and used to torque a distal implant screw 17 inside the body. In this specification, the term proximal PRX or proximal top refers to the in vitro direction, and distal or distal bottom DST refers to the in vivo direction. The wording of proximal and distal is for the purpose of explaining the drawings and does not correspond to the professional terminology used by practitioners.

[0013] Figure 1 It is shown that the implantation torque applied to the proximal implant head male driver 23 will be transmitted to the implant screw 17, but also through the shaft neck 15, which is harmful to the shaft neck. Such torque can be applied by a conventionally available female tool not shown, and the female tool can be operated in alignment with the axis X of the flexible shaft neck implant 10 to engage the male head driver 23. Once the flexible shaft neck implant 10 is implanted, the flexible shaft neck 15 can be bent.

[0014] In practice, the bendable journal 15 usually breaks right at the intersection of the distal bottom portion of the journal 15 and the implant screw 17. Thus, one known cause is severe over-torsion during implantation. Another cause is the additional stress caused by the bending moment applied to the journal 15, which has already been weakened by torque. Other causes are material fatigue that occurs over time due to chewing forces. Regardless of the cause, the problem remains the same: how to prevent torsional forces from being applied to the journal 15, and at the same time, how to prevent the journal 15 from breaking?

[0015] Solution to the problem

[0016] This solution requires preventing the torsional moment from being applied to the bendable journal 15. A solution is provided by using an external driver 100, which includes a male fastener 29 or a single-piece implant 29 configured to operate in conjunction with a female tool 31 or female driver 31. A male screw top driver 27 is integrally added to the distal side of the male fastener 29, and the female driver 31 can support a matching female screw top driver 33. By applying the implant torque directly to the male screw top driver 27 and through the male screw top driver, torque is prevented from being applied to the journal 15 proximal thereto.

[0017] Thus, the implantation torque is applied directly to the convex screw top drive 27 which is an integral part of the implant screw 17 , whereby the implantation torque bypasses the journal 15 proximal to the convex screw top drive 27 .

[0018] Beneficial Effects of the Invention

[0019] The external drive device 100 prevents torque from being applied to the flexible neck 15 by avoiding torque of the flexible neck 15. Therefore, the neck 15 is not subjected to torsional stress and strain. However, if fracture of the flexible neck implant 10 occurs at any time during or after implantation, the convex screw top drive 27 allows the damaged flexible neck implant 10 to be easily removed by using conventionally available concave tools. Thereby, surgical procedures to remove the damaged neck implant 10 are avoided. Other advantages will be described below. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Non-limiting embodiments of the present invention will be described with reference to the following description of exemplary embodiments in conjunction with the accompanying drawings. The drawings are generally not shown to scale, and any measurements are meant to be exemplary only and are not necessarily limiting. In the drawings, identical structures, elements, or parts appearing in multiple drawings are preferably indicated by the same or similar reference numerals in all drawings in which they appear, wherein:

[0021] Figure 1 shows the background technology,

[0022] Figures 2 to 4 An embodiment of an external drive member is shown, and

[0023] Figure 5 and Figure 6 Another embodiment of an external drive is shown. DETAILED DESCRIPTION

[0024] It is noted that the term “external driver” is found in “Screw List” of Wikipedia on the Internet, and the term is defined as: “An external driver is characterized by a female tool and a male fastener 29 ”. In the same way, the external driver 100 includes both the female tool 31 and the male fastener 29 to prevent the torsional moment from being applied to the journal 15 .

[0025] Figure 2 An exemplary embodiment of an externally driven implantation device 100 for a flexible-collared dental implant 10 is schematically illustrated. Figure 2 Part 2a of the drawings shows a male fastener 29 or a one-piece implant 29 with a bendable collar 15, and Figure 2 Part 2 b of FIG. 2 shows a female tool 31 or a female drive member 31 . Figure 2 The externally driven implant device 100 shown is similar to the Figure 1The embodiment described differs in that the male fastener 29 has an added male screw top driver 27, and an added female driver 31. The portion of the male fastener 29 may include the male head driver 23, the abutment 13, the flexible journal 15, the added male screw top driver, and the implant screw 17, which are aligned in sequence along the axis X. It should be noted that the outer dimension d of the male screw top driver 27 is smaller relative to the outer dimension D of the abutment 13 above it.

[0026] The male fastener 29 is configured as a bendable neck implant 15, which is constructed from a uniform rigid and integral part of material. Similarly, the female tool 31 is configured as a female drive member 31, which is also constructed from a uniform rigid and integral part of material. The external drive device 100 can be made of the same material as a conventionally available bendable neck implant, made of metal or made of ceramic material, and can be produced by the same conventionally available manufacturing processes (including 3D printing (also known as additive manufacturing)), which manufacturing processes are well known to those skilled in the art.

[0027] about Figure 2 The concave driving tool 31 or concave driving member 31 shown in part 2a may include a connecting member 35, a main body 37, a concave head driving member 39 and a concave screw top driving member 33 from the proximal PRX to the distal DST direction, which are shown to be arranged along the alignment line X1.

[0028] The connector 35 can be rotated by hand, or coupled to a handle (not shown), for example, for applying torque to the male fastener 29, or for connecting a tool or some type of grip (such as a socket tool or ratchet socket wrench) thereto. The stem 37 is a support for both the female screw top drive 33 and the female head drive 39, and can be configured as part of a recess. Both the female screw top drive 33 and the female head drive 39 have female torque transmission and female engagement geometries that match the male transmission and female engagement geometries of the male screw top drive 27 and the male head drive 23, respectively.

[0029] As noted above, due to the fact that the outer dimensions of the abutment 13 exceed the outer dimensions of the male screw top driver 27, it is not possible to torque the male fastener 29 by using a female tool such as a sleeve tool (e.g., the female tool is configured to engage the male fastener 29 by a movement direction from the proximal side PRX to the distal side DST of the symmetry axis X). Therefore, the female driver 31 is configured to engage the male head and the screw top driver (23 and 27, respectively) by a transverse engagement movement perpendicular to the axis X. It should also be noted that after implantation, the female driver 31 can be used to bend the journal 15. This means that the implant torqueing tool is also a bending tool, which avoids the need to change tools.

[0030] Figure 3 Two exemplary transmission and engagement geometries of male and female drive members are schematically shown to emphasize that a variety of different such geometries can be used. For example, one can implement Figure 3 The two parts shown in part 3a, such as Figure 3 The four and six or more flat portions 41 shown in part 3b of the embodiment of the present invention are shown, and the same is true for a variety of other drive and engagement geometries, in which flat portions 41 are not necessarily used. In addition, the drive and engagement geometries of male and female screw top drivers can be different from the male and female geometries of head drivers.

[0031] exist Figure 4 , the external drive device 100 is shown in an operational arrangement showing the male fastener 29 received in and thereby partially surrounded by the female driver 31. For implant torqueing of the flexible-necked implant 10, the female screw top driver 33 must be engaged with the male screw top driver 27, and the female head driver 39 must be engaged with the male head driver 23. It can be said that when the axis X of the flexible-necked implant 10 is coaxial with the alignment line X1 of the female driver 31, the male fastener 29 is properly engaged to transmit torque through rotation of the female driver 31.

[0032] In operation, Figure 4 As shown, the dedicated female tool 31 and the male fastener 29 are assembled by driving the dedicated female drive tool 31 laterally (thus perpendicular to the axis X) until the female screw top drive 33 engages the male screw top drive 27. Thus, the rotation of the female screw top drive 33 will twist the male screw top drive 27 and apply a torque moment directly to the implant screw 17. At the same time, the female head drive 39 will rotate the male head drive 23, but the twisting moment will not cause stress or strain to the flexible journal 15.

[0033] Figure 5A further exemplary embodiment of an external drive device 100 is schematically shown, which is designed as a short external drive element 51 . Figure 5 Part 5a of the drawings shows a male fastener 29 or a one-piece implant 29 with a bendable collar 15, and Figure 5 Part 5 b of FIG. 5 shows a female tool 31 or a female drive member 31 . Figure 5 The external drive device 100 shown is similar to the Figure 2 The embodiment described differs in that the male head driver 23 is removed from the male fastener 29, and the female head driver 39 is removed from the female driver 31. Figures 2 to 4 Compared to the described embodiment, both the male fastener 29 and the female driver 31 have shorter lengths. This is true even though a small male screw top driver 27 having smaller longitudinal and transverse dimensions relative to the removed male head driver 23 has been added to the male fastener 29. Similarly, the female driver 31 is also shorter after the proximal portion of the connector 35 and the stem 37 are removed. Thus, the short flexible collar implant 50 has the advantages of having a reduced length, requiring fewer production and inspection processes, and having a reduced material weight.

[0034] The portion of the male fastener 29 of the short outer driver 51 may include the abutment 13 , the bendable journal 15 , the male screw top driver 27 , and the implant screw 17 arranged along the axis of symmetry X in longitudinal sequence.

[0035] It should be noted that the outer dimension d of the male screw top drive 27 is small relative to the outer dimension D of the abutment 13 above it. The male fastener 29 is configured as a short flexible collar implant 50 constructed from a uniform rigid and unitary portion of material.

[0036] Likewise, the female drive member 31 is constructed from a uniform rigid and integral part of material. The external drive device 100 can be made from the same material as conventionally available bendable collar implants, from metal or from ceramic materials, and can be produced by the same conventionally available manufacturing processes, including 3D printing (also known as additive manufacturing), which are well known to those skilled in the art.

[0037] about Figure 5The female driver 31 described in section 5a may include a connector 35, a stem 37, and a female screw top driver 33 from the proximal PRX to the distal DST direction, which are shown as being arranged along the alignment line X1. The connector 35 can be rotated by hand, or connected to a handle (not shown), which is used, for example, to apply torque to the male fastener 29, or to connect a tool or some type of grip (such as a socket tool or a ratchet socket wrench) thereto. The stem 37 is a support for the female screw top driver 33 and may be configured as part of a recess. The female screw top driver 33 may have a female torque transmission and a male engagement geometry that matches the male transmission and engagement geometry of the male screw top driver 27.

[0038] As already pointed out above, due to the fact that the outer dimensions of the abutment 13 exceed the outer dimensions of the male screw top driver 27, it is not possible to twist the male fastener 29 by using a female tool such as a socket tool (e.g., the female tool is configured to engage the male fastener 29 by a movement direction from the proximal side PRX to the distal side DST of the symmetry axis X). Therefore, the female driver 31 is configured to engage the screw top driver 23 by a transverse engagement movement perpendicular to the axis X. It should also be noted that after implantation, the female driver 31 can be used to bend the journal 15. This means that the male fastener 29 can also be used as a bending tool, which avoids the need to remove the female driver 31, select a bending tool and then bend the journal 15.

[0039] exist Figure 3 In the embodiment, two exemplary transmission and engagement geometries of male and female drive members (29 and 31, respectively) are used to emphasize that a variety of different geometries are practical. For example, one may implement Figure 3 The two parts shown in part 3a, such as Figure 3 The four and six or more planar portions 41 shown in section 3b of the drawings and this is also true for a variety of other transmission and engagement geometries in which planar portions 41 are not necessarily used.

[0040] exist Figure 6 , the external drive device 100 is shown in an operational arrangement showing the male fastener 29 received in and partially surrounded by the female drive 31. For implant torqueing of the flexible-necked implant 10, the female screw top drive 33 must be engaged with the male screw top drive 27. It can be said that when the axis X of the flexible-necked implant 10 is coaxial with the alignment line X1 of the female drive 31, the male fastener 29 is properly engaged to transmit torque through the rotation of the female drive 31.

[0041] Thus, an external drive device 100 for a flexible-collared implant has been described, comprising a male fastener 29 or a single-piece implant 29 constructed as a rigid and integral unitary entity and comprising an implant screw 17, a journal 15, and a male screw top driver 27. Also included is a male fastener 29 or a single-piece implant 29 constructed as a rigid and integral unitary entity comprising an implant screw 17, a journal 15, and a male screw top driver 27 configured to operate in conjunction with a female tool 31 or female driver 31 supporting a female screw top driver 33. The female driver 31 is configured to apply implantation torque to the implant screw 17 via the male screw top driver 27, which is disposed distally away from the journal 15. Thus, implantation performed using the external drive device 100 prevents application of torque to the journal 15 and at least mitigates fracture of the journal.

[0042] The journal 15 is coupled proximally relative to a convex screw top driver 27 disposed proximally of the implant screw 17, and the convex screw top driver 27 is configured as a proximal and integral part of the implant screw 17. The concave driver 31 is configured to apply implant torque on the convex screw top driver 27 to avoid torque being applied to the journal 15. When the implanted flexible journal implant 10 supports a damaged journal 15, the damaged journal can be removed from the implant by using a conventionally available concave dental tool that matches the convex screw top driver 27.

[0043] The outer dimension d of the convex screw top driver 27 is smaller than the outer dimension D of the abutment 13, which is connected proximally away from the journal 15, and the concave driver 31 is configured to support a matching torque transmission geometry for applying torque to the convex screw top driver 27 and for engaging with the convex screw top driver. The outer dimension d of the convex screw top driver 27 is smaller than the outer dimension D of its proximal abutment 13, and the concave driver 31 supports a torque transmission geometry for torque transmission, which matches the torque transmission geometry of the convex screw top driver 27. The size of the journal 15 is irrelevant to the measurement of implant torque. The convex screw top driver 27 and the concave screw top driver 33 have mutually matching torque transmission geometries. The concave driver 31 is configured to transmit torque to the male fastener 29 and avoid applying torque to the journal 15.

[0044] For device 100, male fastener 29 supports proximal male head driver 23, journal 15, which is disposed between male head driver 23 and male screw top driver 27. Female driver 31 supports proximal female head driver 39 and distal female screw top driver 33, and male driver 29 supports proximal male head driver 23 and distal male screw top driver 27. In addition, male head drivers (23 and 27, respectively) and female drivers (39 and 33, respectively) operate in conjunction with each other. Therefore, the implantation torque applied to male fastener 29 by female driver 31 simultaneously engages the male driver with the female driver, thereby avoiding torque of journal 15.

[0045] A method for constructing an external drive device 100 for a flexible collar implant 10 including a flexible collar 15 and an implant screw 17 is also provided.

[0046] The method includes providing a male fastener 11 and a female driver 31, which operate in an interrelated manner for implantation of an implant screw 17 and for bending a journal 15. The method also includes operating the female driver 31 to apply implantation torque to a male screw top driver 27, which forms a proximal portion integral with the proximal portion of the implant screw 17 to avoid applying torque to the bendable journal 15 and slow down the fracture of the bendable journal.

[0047] The convex screw top driver 27 forms the proximal portion of the implant screw 17 and is integral with the implant screw 17. The concave driver 31 applies the implantation torque on the implant screw 17 via the convex screw top driver 27 to avoid torque being applied to the journal 15. Conventionally available concave dental tools that match the geometry of the convex screw top driver 27 are sufficient to remove the implanted flexible journal implant 10 with a damaged journal 15.

[0048] The outer dimension d of the convex screw top drive 27 can be smaller than the outer dimension D of the abutment 13, which is connected proximally away from the shaft neck 15, and the concave drive member 31 can be correspondingly configured to support a matching torque transmission geometry for applying torque to the convex screw top drive 27 and for engaging with the convex screw top drive.

[0049] The external drive device 100 also includes a short bendable shaft neck implant 50 forming a male fastener 29 and a female driver 31. The male fastener 29 can support the bendable shaft neck 15, the male screw top driver 27 and the implant screw 17 for implantation by applying implantation torque, and the female driver 31 can be configured to apply the implantation torque to the male screw top driver 27 to prevent the torque from being transmitted to the shaft neck 15. The male screw top driver 27 can be integrated as a proximal portion of the implant screw 17. The device 100 also includes an abutment 13, which is disposed proximally away from the shaft neck 15, and the shaft neck is disposed between the abutment 13 and the male screw top driver 27. A female screw top driver 33 is also included, which is configured to engageably match the torque transmission geometry of the male screw top driver 27.

[0050] The convex screw top drive 27 can be configured to transmit the implantation torque to the implant screw 17, and the implantation torque provided by the concave drive 31 avoids the shaft neck 15. When the shaft neck 15 of the short flexible shaft neck implant 50 is damaged after implantation, the removal of the damaged shaft neck 15 is achieved by conventional available medical tools. Since the convex fastener 29 does not have a convex head drive 23, its length is reduced relative to the length of the external drive with a convex head drive 23. Similarly, since the concave drive 31 has a reduced length without a concave head drive 33, its length is reduced relative to the length of the external drive with both a concave head drive 39 and a concave screw top drive 33. Therefore, the short flexible shaft neck implant 50 has a reduced length, reduced weight, is produced by fewer production and inspection processes, and has a reduced material weight. In the same way, the concave drive 31 has a reduced length by not having a concave head drive 39 and a portion of the trunk 37.

[0051] It is noted that after implantation of the implant screw 17, the female drive 31 is appropriately configured to bend the journal 15 to the desired direction. Finally, it is noted that the method for constructing an external drive device 100 for a bendable journal implant, comprising a short bendable journal implant 50 forming a male fastener 29 and a female drive 31, can be implemented according to each of claims 16 to 24.

[0052] Industrial Applicability

[0053] The external drive device 100 may be suitable for use in the dental and / or medical device industries.

[0054] Reference numerals list

[0055] # name 100 External drive 10 Bendable journal 11 Male head drive 13 abutment 15 Flexible journal / journal 17 Implant screws 23 Male head drive 25 External drive 27 Cam screw top drive 29 Male fastener / single-piece implant 31 Concave tools / Concave drivers 33 Recessed screw top drive 35 Connectors 37 Main cadres 39 Concave head drive 41 Plane 50 Short flexible collar implant 51 Short external drive element d Size 27 D Size 13 DST Distal PRX Near side X Axis of the flexible collar implant X1 31 Alignment

Claims

1. An externally driven implantation device (100) for a bendable neck implant, It is characterized in that The device (100) comprises: A bendable neck implant (10) is formed into a convex fastener (29) which is constructed as a rigid and integral whole, the convex fastener comprising an implant screw (17), a proximal convex head driver (23), a distal convex screw top driver (27), and a neck (15) which is disposed between the proximal convex head driver (23) and the distal convex screw top driver (27), and A driving tool, the driving tool forming a concave driving member (31), the concave driving member being constructed as a rigid and integral unit, the concave driving member comprising a main body (37), the main body being arranged between a proximal concave head driving member (39) and a distal concave screw top driving member (33), wherein the proximal concave head driving member (39) and the distal concave screw top driving member (33) are constructed to operate in conjunction with the proximal convex head driving member (23) and the distal convex screw top driving member (27); thereby, the implantation torque applied by the concave driving member (31) to the convex fastener (29) twists the proximal convex head driving member (23) and the distal convex screw top driving member (27) and the implant screw (17), thereby avoiding torque of the shaft neck (15).

2. The device (100) according to claim 1, wherein: The female drive member (31) also supports a proximal connector (35) which is distally coupled to the trunk (37), wherein the connector (35) is configured to be rotated by hand or used to connect the connector to a tool.

3. The device (100) according to claim 1, wherein: The outer dimensions of the convex screw top drive (27) are smaller than the outer dimensions of the abutment (13), the abutment being connected proximally away from the journal (15), and, The female driver (31) is configured to support matching torque transfer geometry for applying torque to the proximal male head driver (23) and the distal male screw top driver (27) and for laterally engaging the proximal male head driver (23) and the distal male screw top driver (27).

4. The device (100) according to claim 1, wherein: The distal convex screw top driver (27) and the distal concave screw top driver (33) and the proximal convex head driver (23) and the proximal concave head driver (39) have a transmission and engagement geometry, which is one of the same transmission and engagement geometry and different transmission and engagement geometry.

5. The device (100) according to claim 1, wherein After implantation of the implant screw (17), the female drive member (31) is also configured to bend the journal (15) to a desired direction, thereby avoiding the need to change tools.

6. The device (100) according to claim 1, wherein The convex screw top drive (27) is an integral part of the implant screw (17).

7. A method for constructing an externally driven implant device (100) for a bendable-collar implant (10), the bendable-collar implant comprising a bendable collar (15) and an implant screw (17), It is characterized in that The method comprises: A journal implant (10) is provided, the journal implant forming a convex fastener (29) supporting a proximal convex head driver (23) and a distal convex screw top driver (27), wherein the journal (15) is disposed between the proximal convex head driver (23) and the distal convex screw top driver (27), and providing a female driver (31) supporting a proximal female head driver (39) and a distal female screw top driver (33), wherein the proximal female head driver (39) and the distal female screw top driver (33) are configured to operate in conjunction with the proximal male head driver (23) and the distal female screw top driver (27); Thus, the implantation torque applied by the concave driver (31) to the convex fastener (29) simultaneously engages the proximal convex head driver (23) and the proximal concave head driver (39), and the distal convex screw top driver (27) and the distal concave screw top driver (33), thereby avoiding torque on the shaft neck (15).

8. The method according to claim 7, wherein: After implantation of the implant screw (17), the female drive member (31) is also operable to bend the journal (15) to a desired direction, thereby avoiding the need to change tools.

9. The method according to claim 7, wherein: The distal convex screw top driver (27) and the distal concave screw top driver (33) and the proximal convex head driver (23) and the proximal concave head driver (39) have transmission and engagement geometries, which are one of the same engagement geometry and different engagement geometries.

10. The method according to claim 7, wherein: The male fastener (11) and the female drive (31) are operable in an interrelated manner for implanting the implant screw (17) and for bending the journal (15).

11. The method according to claim 7, wherein: The convex screw top drive (27) is integrally formed as a proximal portion of the implant screw (17).

12. The method according to claim 7, wherein: The concave drive (31) applies implantation torque to the implant screw (17) via the convex screw top drive (27) to avoid torque being applied to the shaft neck (15).

13. The method according to claim 7, wherein: A concave dental tool matching the geometry of the convex screw top driver (27) is used to remove an implanted bendable-collar implant (10) having a damaged collar (15).

14. The method according to claim 7, wherein: The convex screw top driver (27) transmits the implantation torque to the implant screw (17), and the implantation torque provided by the concave driver (31) bypasses the shaft neck (15).

15. The method according to claim 7, wherein: The method also includes operating the concave driver (31) to apply implant torque to the convex screw top driver (27), the convex screw top driver forming a proximal portion integral with the proximal portion of the implant screw (17) to avoid applying torque to the flexible shaft neck (15) and mitigate fracture of the flexible shaft neck.

16. The method according to claim 7, wherein: The implant screw (17) is aligned along an axis (X), and the female driver (31) is configured to engage the proximal male head driver (23) and the distal male screw top driver (27) via a transverse engagement movement perpendicular to the axis (X).

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