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US5246369A Expired / Lapsed US ⏱️ 0.0 years remaining

Implantable system, rotary device and operating method

Assignee: Individual
•
Filing: 1989-09-04
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Granted: 1993-09-21
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Expires: 2009-09-04
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Abstract

Abstract A resilient or non-resilient implantable system which is either screwed on and self-tapping or impacted, depending on the bone site to be exploited, and which is used to replace a dental organ. The system is comprised of an implant body and of an implant head. It consists of a cylindrical tube having in its upper part a threaded shaft combined with an asymmetrical hexagonal socket and in its lower part a hollowed-out portion occupying the entire width of the cylindrical tube and the maximum of the height comprised between the bottom of the internal threading and the apex part of the cylindrical tube. The vertical edges of the hollowed-out part of the cylindrical tube consist in flat surfaces. The external surface of the cylindrical tube, is provided with an external threading with a thread of no less than 1.25 mm. For the self-tapping implant to be screwed on as well as for the impacted implant, the external threading is advantageously constituted by a series of shoulders which are superposed so as to permit the implant body to be impacted when it cannot be screwed. The invention also relates to a combination of the body with a resilient implant head having at least two shock-absorbing elements, to the rotating material for housing the system and to a method for using the system. The resilient head can be adapted to fit complete implants, designed for toothless people, and juxta-osseous implants.

Inventors

  • 👤 Francis Poulmaire

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 10:59
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/0086; A61C8/0018; A61C8/0022; A61C8/0089

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 138 words
An implantable device for supporting a dental prosthesis comprising an implant body shaped as a cylindrical tube having an internal threading at an upper end of said cylindrical tube, said internal threading for receiving an implant head therein, an asymmetrical hexagonal socket formed in said cylindrical tube below said internal threading, a recessed portion extending for greater than half of a length between a bottom of said internal threading and an apical portion of said cylindrical tube, said recessed portion defining two communicating openings arranged oppositely along said tube, said recessed portion having vertical edges, said cylindrical tube having external threading extending along a portion of a length thereof, said vertical edges of said recessed portion forming side faces with said external threading adjacent said recessed portion, said external threading having projecting whorls with a truncated outer surface.
Claim 2
Dependent Claim 138 words
An implantable device for supporting a dental prosthesis comprising an implant body shaped as a cylindrical tube having an internal threading at an upper end of said cylindrical tube, said internal threading for receiving an implant head therein, an asymmetrical hexagonal socket formed in said cylindrical tube below said internal threading, a recessed portion extending for greater than half of a length between a bottom of said internal threading and an apical portion of said cylindrical tube, said recessed portion defining two communicating openings arranged oppositely along said tube, said recessed portion having vertical edges, said cylindrical tube having external threading extending along a portion of a length thereof, said vertical edges of said recessed portion forming side faces with said external threading adjacent said recessed portion, said external threading having projecting whorls with a truncated outer surface.
Claim 3
Dependent Claim 26 words
An implantable system as recited in claim 1, wherein said external threading of said cylindrical tube has a thread pitch equal to 1.25 mm at least.
Claim 4
Dependent Claim 22 words
An implantable system as recited in claim 1, wherein said external threading has a diameter larger than that of an implantary seating.
Claim 5
Dependent Claim 25 words
An implantable system as recited in claim 1, wherein said external threading of said implant body comprises a series of shoulders lying upon one another.
Claim 6
Dependent Claim 37 words
An implantable system as in claim 1, wherein a decompression opening is formed through the apical part of said implant body and provides a communication between the recessed portion of said implant body and an osseous cavity.
Claim 7
Dependent Claim 25 words
An implantable system as recited in claim 1, wherein said implant body is connected to a resilient implant head including at least two shock-absorbing elements.
Claim 8
Dependent Claim 42 words
An implantable system as recited in claim 6, wherein said resilient implant head comprises a cylindrical base having a threaded lower part screwed in said internal threading of said implant body, said implant head has an upper part with a cylindrical stump.
Claim 9
Dependent Claim 48 words
An implantable system as recited in claim 7, wherein said implant head includes a first shock-absorbing element comprised of a reversed truncated ring, a second shock-absorbing element is comprised of a ring provided above said cylindrical stump, said second shock-absorbing element surrounding a head of an adjusting screw.
Claim 10
Dependent Claim 19 words
An implantable system as recited in claim 8, wherein said shock-absorbing elements are made from compressible and biocompatible polychlorotrifluoroethylene.
Claim 11
Dependent Claim 20 words
An implantable system as recited in claim 6, wherein said implant body and said implant head are made from titanium.

References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1996-09-20 1997-03-22 1997-09-21 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2000-09-20 2001-03-22 2001-09-21 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2004-09-20 2005-03-22 2005-09-21 $7700.00 Window Closed / Lapsed

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