# US 8,540,513 B1 · Expandable dental implant with improved mechanical retention

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- Number: US 8,540,513 B1
- Document ID: US8540513B1
- Status: Granted
- Kind: B1
- Application number: 13/438,518
- Filed: 2012-04-03
- Published: 2013-10-03
- Granted: 2013-09-24
- Earliest claimed: 2012-04-03
- Applicants: Murtada Hassan Aldoukhi
- Inventors: Murtada Hassan Aldoukhi
- Web page: https://patentgrep.com/patent/US8540513B1

## CPC

- A61C 8/0018: {characterised by the shape}
- A61C 8/0033: {Expandable implants; Implants with extendable elements}
- A61C: DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE (non-driven toothbrushes A46B; {tongue scrapers A61B17/24;} preparations for dentistry A61K6/00; preparations for cleaning the teeth or mouth A61K8/00, A61Q11/00)

## Abstract

A dental implant with expandable engagement portions hinged on the bottom of the implant. The expandable engagement portions may be made of gold and may have a smooth or contoured outer surface and expand outward when an expander is inserted into the implant. To receive the implant, an implant site is created in the jawbone which is wider at the bottom, having a shape similar to the implant when expanded, so that once the expandable engagement portions expand outward, they fill the bottom of the implant site and thereby result in strong mechanical engagement between the implant and the jawbone. The implant is further anchored by horizontal anchoring apparatus configured for insertion into the bone and the implant. Each of the horizontal anchoring apparatus may anchor the implant onto only one wall, making it possible to use such anchoring apparatus in the event that a wall is missing.

## Claims

### Claim 1

A dental implant comprising:
a central core body with a vertically oriented cavity extending from the top of the central core body through the bottom along a central axis of the central core body;
a plurality of horizontally oriented cavities on the central core body;
a plurality of anchors for insertion in a subset of said horizontally oriented cavities;
a plurality of expandable engagement portions hinged at the bottom of the central core body; and
an expander in said vertically oriented cavity wherein said expander expands said expandable engagement portions upon an insertion of the expander; wherein the expander is configured to expand and retract the expandable engagement portions into an implant site, wherein the expandable engagement portions are configured to have a diameter greater than the diameter of the central core body.

### Claim 2 (depends on 1)

The dental implant of claim 1 wherein
said central core body has a threaded outer surface.

### Claim 3 (depends on 1)

The dental implant of claim 1 wherein
said vertically oriented cavity has a threaded surface.

### Claim 4 (depends on 3)

The dental implant of claim 3 wherein
said expander has a threaded surface matching the threaded surface of said vertically oriented cavity.

### Claim 5 (depends on 1)

The dental implant of claim 1 wherein
said expander has a tool engaging surface for rotating said expander.

### Claim 6 (depends on 1)

The dental implant of claim 1 wherein
said expander and said expandable engagement portions are connected by a plurality of levers, each lever in loose mechanical engagement with the expander on one side, and in loose mechanical engagement with one of the expandable engagement portions on the opposite side, such that insertion of the expander causes the levers to move away from each other and push the expandable engagement portions to expand.

### Claim 7 (depends on 1)

The dental implant of claim 1 wherein
said plurality of expandable engagement portions are made of a biocompatible material.

### Claim 8 (depends on 7)

The dental implant of claim 7 wherein
said biocompatible material is gold.

### Claim 9 (depends on 1)

A method of inserting a dental implant comprising:
creating an implant site in a jawbone;
inserting the dental implant of claim 1; and
inserting said expander to cause said plurality of expandable engagement portions to expand.