Patent ID: 9517114
Filing Date: 2016-12-13
CPC Classification: A61C

Claim Text:
1. A fixed detachable dental attachment device, comprising: a cap having a first attachment portion adapted to be rigidly secured to a dental appliance and a body portion having an open end, a retention head and an inner cavity facing away from the dental appliance and forming an annular wall that surrounds the retention head, the annular wall having a concave portion extending up to the open end, wherein the first attachment portion and body portion are aligned along a central longitudinal axis of the cap; a ring; and an abutment comprising an upper portion and a second attachment portion, the upper portion having a convex outer surface comprising an open end and a socket for receiving the ring and the retention head, wherein an external surface of the ring contacts the socket and an internal surface of the ring contacts the retention head to secure the cap onto the abutment without contact between the retention head and the socket; wherein the concave portion of the annular wall of the body portion of the cap engages over the convex outer surface of the abutment to secure the cap onto the abutment; and the retention head is in swivel engagement in the ring and the concave portion of the inner cavity of the body portion of the cap is in direct swivel engagement with the convex outer surface of the abutment.