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US 11,291,548 B2Granted
Dental screw
AssigneeBotiss Biomaterials GmbH
InventorsOliver Bielenstein, Drazen Tadic, Frank Witte, Romano Matthys
Life of this patent
Estimating the term…
Abstract
A screw suitable for use specifically in the field of oral dental surgery consists of a bioresorbable material and comprises a drive that can be broken off by means of a predetermined breaking point and/or has a thickened shaft below the contact surface of a cap of the head of the screw.
Claims18
A screw for fixing an implant,
- wherein the screw consists of a bioresorbable material,
- wherein the screw comprises a thread for screwing it into a bone,
- wherein the screw comprises a head with a cap and a drive,
- wherein the cap comprises an essentially flat contact surface for the implant,
- wherein a predetermined breaking point that is designed as a constriction between a top side of the cap and the drive is present between the drive and the cap, and
- wherein a shaft of the screw thickens towards the cap, and
- wherein teeth of the thread comprise a width that is at least 0.5 times a width of a tooth base.
4 more elements
A screw for fixing an implant,
- wherein the screw consists of a bioresorbable material, namely of magnesium or of a magnesium alloy,
- wherein the screw comprises a thread for screwing it into a bone, wherein the screw comprises a head with a cap and a drive,
- wherein the cap comprises an essentially flat contact surface for the implant,
- wherein a predetermined breaking point that is designed as a constriction between a top side of the cap and the drive is present between the drive and the cap,
- wherein a shaft of the screw thickens towards the cap,
- wherein the thread is designed such that teeth of the thread are flat or rounded on the outside and bases of the teeth merge rounded into flanks of the teeth, and
- wherein the thread has a self-tapping tip, wherein teeth of the thread comprise a width that is at least 0.5 times a width of a tooth base.
4 more elements
Dependencies are inferred from the claim text.