Dental implant with shock absorbent cushioned interface
US5425639A · kind A · utility
Inventor
Key dates
| Filing date | May 3, 1994 |
| Grant date | Jun 20, 1995 |
| Priority date | — |
| Expiry date | May 3, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2002/30929
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A dental implant device which effectively and physiologically prevents the penetration of bacteria and other microorganisms and foreign material into the vital implant interface surface with the bone while maintaining resilience and energy absorbing properties which prevent excessive stress on the implant and underlying bone tissue and discomfort to the user. This dental implant device comprises (a) a root structure made of a suitable dental prosthesis material, (b) a resilient boot member surrounding and in contact with the lower portion of the root structure, (c) a biocompatible substantially non-porous sheath member to which bony tissue will readily adhere, enclosing both the resilient boot member and lower portion of the root structure, and (d) a porous sleeve that prevents the penetration of pathogens into the vital implant interface with the bone. More preferably, the device includes a resilient membrane sleeve around an upper portion of the root structure and a seal between the upper and lower portions of the root structure and the sheath member to preclude tissue adherence to the boot member and prevent gingival tissue adherence to the sheath member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.