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AssigneesAxel Kirsch, Eberle Medizintechnische Elemente GmbH
InventorsWalter Durr, Axel Kirsch
Estimating the term…
An implant for an individual tooth including a metal implant post having a fastening head for receiving the removable denture, the implant post being mounted in a metal spacing element which is threaded in a basic structure that is implantable in the tooth. To hold the spacing element in a fixed, non-twisting and rotatable position, the element is composed of a base portion having a first threaded portion which is received in the basic structure and a second threaded portion of a pitch less than the first portion, which receives a ring element that is threaded thereon and has a shoulder for engaging an upper edge of the basic structure to form a locking arrangement. The invention also is directed to a tool having concentric sleeves which move relative to one another with the inner sleeve having slots for receiving lugs on the base element and the outer sleeve having lugs or projections to be received in the slots on the ring so that the ring can be rotated relative to the base element, which is held by the inner sleeve.
In an implant for individual teeth having a metal implant post with a head portion for receiving a removable denture with a snug fit, said post being an inner bore of a spacer sleeve, which sleeve is threaded into a bore of a basic structure mounted in the jaw of the patient, the improvements comprising locking means for locking the spacer sleeve in the basic structure against twisting and turning, said locking means including the spacer sleeve having a base element with a first threaded portion with a first pitch threaded in the bore of the basic structure and a second threaded portion adjacent an upper end of the base element of a second pitch smaller than the first pitch and a ring element threadably received on the second portion, said ring element having a shoulder engaging an upper annular face of the basic structure, said ring element on a surface facing away from said shoulder and said base element on an upper end face each being provided with means for attaching a tool to enable simultaneously holding the base element against twisting as the ring element is threaded tightly on the second thread portion of the base element to press the shoulder of the ring element against the upper annular face of the basic structure.
A locking tool for locking a ring element of a spacer sleeve on a base member inserted in a basic structure, said locking tool comprising a base wrench having means for complimentarily receiving attachment elements on a top of a base member, a top wrench rotatable relative to the base wrench having means complimentary to tool attaching elements provided on an end face of the ring of the spacer sleeve, said base wrench and top wrench being individually rotated relative to one another to enable tightening the ring element on the base element.
Dependencies are inferred from the claim text.