Dentistry – Prosthodontics – Holding or positioning denture in mouth
Reexamination Certificate
2000-02-17
2001-06-19
Manahan, Todd E. (Department: 3732)
Dentistry
Prosthodontics
Holding or positioning denture in mouth
C206S368000
Reexamination Certificate
active
06247932
ABSTRACT:
TECHNICAL FIELD
The invention relates to a container or device holding a cartridge having two cartridge parts joined separably together and a dental implant arranged in the cartridge.
STATE OF THE ART
A sterile container for a dental implant appearing in the book, “Orale Implantologie,” by André Schroeder, Franz Sutter, Daniel Buser and Gisbert Krekeler, 2nd Edition, 1994, Georg Theme Verlag, Stuttgart/New York, pages 223 to 225, contains a cartridge with an ampule and a cap. In the container there is arranged an inner ampule with an inner cap. The inner ampule contains a metal, cage-like holder which holds the dental implant. The implant has, for example, an external thread designed to be screwed into a bone, and an axial bore with an internal thread. When such an implant is unpacked and used, first the outer ampule is opened, the inner ampule dumped out, the inner ampule is opened and a driving instrument is first screwed by hand loosely into the internal thread. Then a ratchet is pushed onto part of the driving instrument, a wrench is tightened onto a part of the driving instrument that bears a hexagonal head and extends through the ratchet and the holder is removed from the container. Then the direction of rotation of the ratchet drill is reversed, the implant is lifted out of the inner ampule and is screwed into the bone.
This known container has the disadvantages that it has relatively many components, and that, above all, many steps are necessary for removing the implant from the container, introducing it with the ratchet into the patient's mouth and driving it in. Also, the driving instrument must be unscrewed from the implant after the implant has been screwed into a bone. The great number of working steps, and especially the screwing of a driving instrument into the implant further increases the danger that germs may get on the implant.
The known container also has similar disadvantages when the implant is not screwed into a bone but is to be hammered into it.
OUTLINE OF THE INVENTION
The invention is addressed to the problem of creating a container and device which will avoid the disadvantages of the known container and especially will make it possible to remove an implant in a few steps from the container and insert it into a bone in the lower or upper jaw of a patient.
The problem is solved according to the invention by a container holding a cartridge having two cartridge parts detachably joined together and a dental implant arranged therein. The dental implant has an anchoring portion intended for anchoring in a bone, and an outer portion intended to protrude from the bone. The container is characterized in that the cartridge contains a holder which can be removed together with the dental implant from the cartridge and which clutches the outer portion of the dental implant, and has clasping and/or holding means detachably holding the implant plus a shaft [axis?], and in that the dental implant and the holder have antirotational means in order to join the dental implant and the holder together against rotation on one another.
Advantageous embodiments of the subject of the invention will be found in the dependent claims.
REFERENCES:
patent: 5062800 (1991-11-01), Niznick
patent: 5368160 (1994-11-01), Leuschen et al.
patent: 5558230 (1996-09-01), Fischer et al.
patent: 5582299 (1996-12-01), Lazzara et al.
patent: 5636991 (1997-06-01), Mays
patent: 5755575 (1998-05-01), Biggs
Evenson, McKeown, Edwards & Lenahan P.L.L.C.
Manahan Todd #E.
Sutter Franz
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