Dental implant delivery system having driver mount with removable flange

A dental implant delivery system comprising a vial housing an implant and driver mount with a removable flange.

BACKGROUND OF THE INVENTION 
Dental implants are typically packaged and shipped in a package or implant 
delivery system. The delivery system, in conjunction with outside 
packaging, maintains the implant in a sterile environment and is opened 
just before the implant is needed during the surgical procedure. 
FIG. 1 illustrates an example of one such prior delivery system shown 
generally at 10. Delivery system 10 includes a vial 12 housing a threaded 
implant 14 and a driver mount 16. 
The vial typically has an elongated cylindrical configuration and is used 
to transport the implant and driver mount. A lid, not shown, fits on top 
of the vial to seal and retain the implant and driver mount. 
Implant 14 is shown having an external threaded section 18 and a top 
coronal section 20. The coronal section includes a hexagonal projection 22 
for mating with different dental components. 
The driver mount includes a bottom portion having a hexagonal recess 24 
that engages with the projections 22 on the implant. The driver mount also 
includes a bottom portion and a top portion having a flange 26. This 
flange is integrally formed with the top portion and extends outwardly to 
have a larger diameter than the bottom portion. 
The driver mount and implant together fit within a cylindrical cavity 
formed within the vial. A screw 28 secures the driver mount to the 
implant. As shown in FIG. 1, the vial includes an internal shoulder 30 
with an opening 32. The implant passes through this opening until the 
flange of the driver mount abuts against the shoulder. The flange and 
shoulder thus hold the implant and the driver mount in the vial and keep 
the implant from touching the sides or bottom of the vial. 
In order to install implant 14 into the patient's jawbone, an implant site 
is prepared using conventional surgical procedures. Typically, an incision 
is made along the gingival tissue at the implant site, and a cylindrical 
bore is drilled into the alveolar bone. Once the site is fully prepared, a 
driving tool, such as a motorized dental hand-piece, is connected to the 
driver mount using an adapter. The implant and driver mount are removed 
from the vial. The end of the implant is fit within the bore, and the 
driver mount drives the implant into position. The screw and driver mount 
are then removed from the implant. The gingival tissue is then sutured and 
the implant remains within the bone for several months as osseointegration 
and healing occur. During a second surgical procedure, the implant is 
re-exposed and a dental prosthesis is affixed to the implant. 
One important disadvantage associated with prior art delivery systems is 
that the driver mount will not fit within some tight interdental spaces. 
During a single tooth restoration, for example, the implant often must be 
driven between two adjacent teeth. The distance between these teeth may be 
narrow, and the flange on the driver mount may be too wide to fit. The 
driver mount thus cannot be used to fully seat the implant. In such a 
situation, a second and narrower driver must be substituted for the driver 
mount having a flange. 
Another disadvantage is more surgical steps are required during some 
implantation procedures using prior art delivery systems. Again, if the 
interdental space is too narrow then the flange on the driver mount may 
prohibit the implant from being fully and properly seated in the bone. In 
this case, the driver mount having an integral flange must be disengaged 
from the driving tool and then disengaged from the implant. Next, another 
narrower driver mount must be attached to the implant and then attached to 
the driving tool. These steps not only add time to the surgical procedure 
but also increase inconvenience for the surgeon. Further, the risk of 
contaminating the implant or dropping one of the dental components also 
greatly increases. 
It therefore would be advantageous to employ a dental implant delivery 
system that could be used in instances when access to the restoration site 
is narrow or limited in space. Such a delivery system would be more 
universal and could be utilized even when the interdental space is small. 
It would be advantageous to employ a dental delivery system that requires a 
fewer number of steps during the surgical implantation procedure. A 
surgical procedure requiring fewer steps ultimately would be less 
traumatic to the patient, more expeditiously performed, and less 
burdensome on the surgeon, to name a few examples. Further yet, such a 
delivery system would minimize the amount of handling of the system 
components. 
The present invention solves the problems discussed with prior dental 
delivery systems and provides further advantages. 
SUMMARY OF THE INVENTION 
The present invention is directed toward a dental implant delivery system 
that may be used in narrow interdental spaces. The delivery system 
includes an implant, a driver mount, a screw connecting the driver mount 
to the implant, and a vial for housing the components. 
The driver mount consists of a core body having a removable flange. The 
core body has a generally cylindrical configuration and preferably a 
diameter that is not substantially larger than the diameter of the 
implant. The flange is positioned around the core body and has a diameter 
larger than the core body. 
During transportation and storage of the delivery system, the implant and 
driver mount are suspended within the vial as the flange on the driver 
mount abuts against a ledge in the vial. Subsequently, during the surgical 
implantation procedure, the implant and accompanying driver mount are 
positioned at the osteotomy site. The driver mount is then used to drive 
and seat the implant. If the interdental space is narrow and cannot 
accommodate the size of the flange, a separate driver mount is not 
required. Rather, the flange is removed from the core body, and the driver 
mount is used to fully seat and position the implant. 
The delivery system of the present invention is particularly advantageous 
because it may be used in narrow interdental spaces. Further, additional 
surgical steps of removing one driver mount and substituting a narrower 
one are not required. 
The invention, accordingly, comprises the apparatus and method possessing 
the construction, combination of elements, and arrangement of parts which 
are exemplified in the following detailed description. For a fuller 
understanding of the nature and objects of the invention, reference should 
be made to the following detailed description taken in connection with the 
accompanying drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
FIG. 2 illustrates a vial 100 of the dental implant delivery system. The 
vial includes a body 102 having two adjacent cavities 104A and 104B, 
respectively. Each cavity has a generally elongated cylindrical 
configuration that extends downwardly toward a closed base portion 106 of 
body 102. The vial also includes a clip 108 and a lid 110. The clip 
connects to a top portion of the body and is used to attach and secure the 
vial. A flexible arm 112 connects the lid to the body. It will be 
appreciated that the vial shown in FIG. 2 is exemplary, and other vial 
designs and configurations known to those skilled in the art also would be 
applicable with the present invention. 
FIG. 3 shows a cross section of the implant delivery system that includes 
vial 100 housing in cavity 104A an implant 114, driver mount 116, and 
retaining screw 118. A healing screw 119 and removable mount 120 are 
located in cavity 104B. Turning also to FIG. 4, the implant and driver 
mount are shown in more detail. 
Implant 114 may be any one of various implants known to those skilled in 
the art. For illustration purposes, implant 114 has outer threads 121, a 
cutting region 122 for self-tapping, and a coronal portion 124 having a 
plurality of splines 126 extending upwardly. This implant may be, for 
example, a TWIST implant manufactured by Sulzer Calcitek Inc. of Carlsbad, 
Calif. 
Driver mount 116 has a generally elongated cylindrical configuration having 
two ends 130 and 132, respectively. Portions of the external surface 133 
of the driver mount may be non-cylindrical, such as hexagonal. End 130 is 
configured to abut against the coronal end of the implant. End 130 
includes a plurality of splines 134 that project downwardly to engage 
corresponding splines 126 of the implant. The engagement between these 
splines provides an anti-rotational connection between the driver mount 
and implant. This anti-rotational connection may be established with other 
configurations known to those skilled in the art, such as a mating 
hexagonal projection and recess. 
The other end 132 of the driver mount includes a channel 136 that 
circumferentially extends around the body. This channel is formed between 
a lip 138 located at the top of end 132 and shoulder 140. Channel 136 
provides a space for a removable flange or ring 142. FIG. 5 illustrates 
one embodiment of ring 142 in more detail. 
One important advantage of the present invention is that ring 142 is 
removable from the driver mount. Ring 142 is secured within channel 136 
between lip 138 and shoulder 140. The ring though may be removed from this 
position around the driver mount. The ring, for example, may be pulled 
over lip 138 or shoulder 140 and removed from the channel. 
FIG. 6 illustrates another embodiment for the ring. Here, the ring is 
shaped like a thin C-clip 150. This clip fits around end 132 of the driver 
mount. The clip may connect, for example, with a snap-fit or 
frictional-fit. A small hole 152 is provided to aid in removing the clip 
from the driver mount. A tip of a dental instrument, such as an explorer, 
may be positioned in the hole and used to pull and remove the clip from 
the driver mount. 
Use of the implant delivery system is now discussed in more detail with 
reference to FIGS. 3 and 4. During storage and transportation of the 
implant delivery system, the implant 114 and driver mount 116 remain 
suspended in a sterile and protected environment in vial 100. Cavity 104A 
includes an opening 160 forming a shoulder or ledge 162 within the cavity. 
The diameter through opening 160 and shoulder 162 is sufficiently large to 
enable the implant to pass freely into the cavity. Ring 142, affixed to 
the driver mount, is too large to pass through the opening. As such, the 
ring abuts against and rests on shoulder 162. The implant and driver mount 
are thus suspended within cavity 104A. 
In FIG. 3, shoulder 162 exists slightly below opening 160. This shoulder, 
however, may exist at various positions in cavity 104A. The shoulder, for 
example, may be formed on top of opening 160 such that ring 142 rests on 
surface 164. 
During a dental implantation procedure, lid 110 is removed from the top of 
vial 100 to expose the implant and driver mount. A driving tool, such as a 
motorized driver or ratchet wrench, and an adapter are then affixed to end 
132 and the implant and driver mount are removed from the vial. The distal 
end of the implant is then positioned into the osteotomy site. The driving 
tool then imparts a driving force to the driver mount that, in turn, 
imparts this same force to the implant. Once the implant is fully seated 
and positioned, the driving tool is removed from end 132. The retaining 
screw 118 is then loosened, and the driver mount is removed from the 
implant. The implant remains in the bone, and the delivery cap 120 and 
healing screw 119 are then removed from cavity 104B using the noted 
driving tool. The cap is then placed over the coronal end of the implant 
until screw 119 fits within the implant. Thereafter, the cap 120 is 
disengaged from the screw, and the screw is left to cover the implant. 
Conventional procedures are then used to finish the surgical procedure and 
thereafter connect a prosthesis to the implant. 
In some instances, the spacing available to receive the implant may be 
quite small. For example, the space between two adjacent teeth may be 
narrow. In this situation, the implant may be narrow enough to fit within 
this space, but the flange or ring on the driver mount may be too wide. If 
the flange or ring cannot safely fit within the available space, then the 
implant cannot be fully seated within the bone. The present invention 
solves this potential problem because the ring is removable from the 
driver mount. In such a situation, the ring would be removed from the 
driver mount enabling the implant to be fully and correctly positioned. 
Thus, a separate and narrower driver mount is not required. 
Still looking to FIG. 4, the driver mount preferably has a diameter 166 
equal to or less than the diameter 168 of the implant. The size of the 
driver mount thus does not obstruct or otherwise prohibit the placement of 
the implant in narrow dental spaces. The diameter 170 of the ring, 
however, is larger than diameter 166 of the driver mount and diameter 168 
of the implant. As shown in FIG. 3, this difference in diameters enables 
the implant and part of the driver mount to pass through opening 160; the 
ring though is too large and rests on shoulders 162 to support the implant 
and driver mount. 
The flange may be made to have any one of numerous configurations that may 
or may not resemble the embodiments of FIGS. 5 and 6. The term flange is 
defined broadly to describe a supporting feature that suspends the implant 
and driver mount in the vial. The flange, for example, may be formed as 
removable set screw or pin that protrudes through the end or side of the 
driver mount or formed as a protrusion, such as a ring or bead, that 
adhesively bonds to the end of the driver mount. The flange also may be 
formed as a shoulder, an elastomeric band, an O-ring, a C-clip, a toroid, 
U-shaped, star shaped, a cylindrical, or the like. Further, various 
materials may be used to fabricate the flange. The flange may be made from 
a polymer, steel, titanium, or other material suitable for use in 
restorative dentistry. Examples of such material include silicone, 
santoprene, delrin, polycarbonate, or PETG. 
Since certain changes may be made in the above-described apparatus and 
method without departing from the scope of the invention herein involved, 
all matter contained in the description or shown in the accompanying 
drawings shall be interpreted as illustrative and not in a limiting sense.