US6217331B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single-stage implant system
Assignee: Biomet 3I LLC
•
Filing: 1998-10-01
•
Granted: 2001-04-17
•
Expires: 2018-10-01
Abstract
Abstract A single stage dental implant for implantation in living jawbone having overlying gingiva comprises a generally cylindrical body section having an exterior surface for confronting the jawbone and a head section attached to the body section for extending through the overlying gingiva when the body section is confronting the jawbone. The head section has an end portion which is generally near an outer layer of the gingiva. The implant further includes a bore within the head section extending to an opening at the end portion of the head section. The bore is defined by first, second, and third walls. The first wall has internal threads. The second wall has a larger diameter than the first surface and is substantially cylindrical. The second wall extends from the first wall toward the end portion. The third wall extends from the second wall to the opening and flares toward the opening to a diameter that is wider than a diameter of the second wall. The implant is delivered to the site in the patient's mouth with a carrier that is expanded into the second wall of the bore thereby developing a tight engagement capable of withstanding the insertion torque. The implant can be fitted with posts which extend above the upper portion of the implant. The post can be fitted with gingival forming components and temporary posts.
Inventors
- 👤 Dan Paul Rogers
- 👤 Gale R. Brown
- 👤 Ralph E. Goodman
- 👤 Richard J. Lazzara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:08
CPC Classifications
A; A61; A61C; A61C8/00; A61C8/008; A61C13/00; A61C13/0001; A61C8/0001; A61C8/0048; A61C8/005; A61C8/0065; A61C8/0066; A61C8/0069; A61C8/0089; A61C8/0018; A61C8/0033; A61C8/0037; A61C8/0054; A61C8/0057; A61C8/0059; A61C8/006; A61C8/0071
Claims Analysis
Total Claims: 42
Claim 1
Independent Claim
178 words
A dental implant for implantation in living jawbone having overlying gingiva, comprising: a generally cylindrical body section having an exterior surface for confronting said jawbone; a head section attached to said body section for extending through said overlying gingiva when said body section is confronting said jawbone, said head section having an end portion which is adapted to be positioned near an outer layer of said gingiva; and a bore within said head section extending to an opening at said end portion of said head section, said bore being defined by first, second, and third walls, said first wall having internal threads, said second wall having a larger diameter than said first surface and being substantially cylindrical, said second wall extending from said first wall toward said end portion, said third wall extending from said second wall to said opening, said third wall flaring toward said opening to a diameter that is wider than a diameter of said second wall said second wall including an internally threaded section such that said bore has two distinct internally threaded sections.
Claim 2
Dependent Claim
178 words
A dental implant for implantation in living jawbone having overlying gingiva, comprising: a generally cylindrical body section having an exterior surface for confronting said jawbone; a head section attached to said body section for extending through said overlying gingiva when said body section is confronting said jawbone, said head section having an end portion which is adapted to be positioned near an outer layer of said gingiva; and a bore within said head section extending to an opening at said end portion of said head section, said bore being defined by first, second, and third walls, said first wall having internal threads, said second wall having a larger diameter than said first surface and being substantially cylindrical, said second wall extending from said first wall toward said end portion, said third wall extending from said second wall to said opening, said third wall flaring toward said opening to a diameter that is wider than a diameter of said second wall said second wall including an internally threaded section such that said bore has two distinct internally threaded sections.
Claim 3
Dependent Claim
33 words
The dental implant of claim 1 , wherein said internally threaded section of said second wall includes at least one thread groove, said at least one groove separating lands on said second wall.
Claim 4
Dependent Claim
18 words
The dental implant of claim 2 , wherein said lands preserve a major portion of said second wall.
Claim 5
Dependent Claim
15 words
The dental implant of claim 2 , wherein said thread grooves form a multi-lead thread.
Claim 6
Dependent Claim
18 words
The dental implant of claim 4 , wherein a pitch of said thread grooves is approximately one millimeter.
Claim 7
Dependent Claim
21 words
The dental implant of claim 1 , wherein said head section flares outwardly from said main body toward said end portion.
Claim 8
Dependent Claim
27 words
The dental implant of claim 6 , wherein said exterior surface of said main body section is threaded and said head section has a smooth external surface.
Claim 9
Dependent Claim
15 words
The dental implant of claim 1 , wherein said bore extends into said body section.
Claim 10
Dependent Claim
17 words
The dental implant of claim 8 , wherein said first wall is entirely within said body section.
Claim 11
Dependent Claim
17 words
The dental implant of claim 8 , wherein said third wall is entirely within said head section.
Claim 12
Dependent Claim
17 words
The dental implant of claim 10 , wherein said second wall is entirely within said head section.
Claim 13
Dependent Claim
41 words
The dental implant of claim 1 , wherein said end portion of said head section includes a generally annular surface that is at an angle with respect to a central axis of said implant, said angle being substantially less that 90°.
Claim 14
Dependent Claim
21 words
The dental implant of claim 12 , wherein said end portion further includes a non-round fitting adjacent to said annular surface.
Claim 15
Dependent Claim
13 words
The dental implant of claim 12 , wherein said angle is approximately 45°.
Claim 16
Dependent Claim
27 words
The dental implant of claim 1 , wherein said exterior surface of said main body section is roughened and said head section has a smooth external surface.
Claim 17
Dependent Claim
33 words
The dental implant of claim 1 , wherein said flaring of said third wall is at angle suitable to provide a locking taper for engagement with a corresponding taper on a mating component.
Claim 18
Independent Claim
106 words
A system for delivering an implant into living bone comprising: an implant having an exterior surface for confronting said living bone and including a bore that has an opening at an end portion of said implant, said bore being at least partially defined by a substantially cylindrical section; a carrier device having an expandable portion and a non-round fitting, said expandable portion being inserted to said substantially cylindrical section of said bore of said implant, said non-round fitting being accessible near said end portion of said implant; and means for expanding said expandable cylindrical segment into tight engagement with said substantially cylindrical section of said bore.
Claim 19
Independent Claim
106 words
A system for delivering an implant into living bone comprising: an implant having an exterior surface for confronting said living bone and including a bore that has an opening at an end portion of said implant, said bore being at least partially defined by a substantially cylindrical section; a carrier device having an expandable portion and a non-round fitting, said expandable portion being inserted to said substantially cylindrical section of said bore of said implant, said non-round fitting being accessible near said end portion of said implant; and means for expanding said expandable cylindrical segment into tight engagement with said substantially cylindrical section of said bore.
Claim 20
Dependent Claim
21 words
The implant delivery system of claim 17 , wherein said bore further includes a threaded section positioned below said cylindrical segment.
Claim 21
Dependent Claim
21 words
The implant delivery system of claim 18 , wherein said bore further includes a flared section positioned above said cylindrical section.
Claim 22
Dependent Claim
18 words
The implant delivery system of claim 17 , wherein said substantially cylindrical section has an uninterrupted circular cross-section.
Claim 23
Dependent Claim
27 words
The implant delivery system of claim 17 , wherein said expandable portion includes a plurality of fingers having radial extremities which reside on a generally circular locus.
Claim 24
Dependent Claim
35 words
The implant delivery system of claim 21 , wherein a diameter of said generally circular locus is slightly less than a diameter of said substantially cylindrical section prior to the actuation of said expanding means.
Claim 25
Dependent Claim
30 words
The implant delivery system of claim 17 , wherein said carrier has a hollow section within said expandable portion, said expanding means includes a structure inserted into said hollow section.
Claim 26
Dependent Claim
31 words
The implant delivery system of claim 23 , wherein said hollow section includes internal threads and said structure has outer threads for threadably engaging said internal threads of said hollow structure.
Claim 27
Dependent Claim
22 words
The implant delivery system of claim 24 , wherein said hollow section includes wedge blocks for engaging an end of said structure.
Claim 28
Dependent Claim
32 words
The implant delivery system of claim 17 , wherein said carrier includes a radially extending flange between said non-round fitting and said expandable portion for engaging said end portion of said implant.
Claim 29
Dependent Claim
52 words
The implant delivery system of claim 26 , wherein said end portion includes a generally annular surface that is at an angle with respect to a central axis of said implant, said angle being less substantially less that 90°, said radially extending flange has a surface cooperating with said generally annular surface.
Claim 30
Dependent Claim
24 words
The implant delivery system of claim 17 , wherein said generally cylindrical wall includes thread grooves separated by lands on said generally cylindrical wall.
Claim 31
Dependent Claim
20 words
The implant delivery system of claim 28 , wherein said expandable portion has threads which mate with said thread grooves.
Claim 32
Dependent Claim
34 words
The implant delivery system of claim 28 , wherein said bore has a second threaded section of a different diameter than said first threaded region for engaging fasteners holding artificial dentition on said implant.
Claim 33
Independent Claim
106 words
A system for delivering an implant into living bone comprising: an implant having an exterior surface for confronting said living bone and including a bore that has an opening at an end portion of said implant, said bore being at least partially defined by a threaded section; a carrier device having an expandable threaded portion and a non-round fitting, said expandable threaded portion being threadably inserted into said threaded section of said bore of said implant, said non-round fitting being accessible near said end portion of said implant; and means for expanding said expandable threaded segment into tight engagement with said threaded section of said bore.
Claim 34
Independent Claim
106 words
A system for delivering an implant into living bone comprising: an implant having an exterior surface for confronting said living bone and including a bore that has an opening at an end portion of said implant, said bore being at least partially defined by a threaded section; a carrier device having an expandable threaded portion and a non-round fitting, said expandable threaded portion being threadably inserted into said threaded section of said bore of said implant, said non-round fitting being accessible near said end portion of said implant; and means for expanding said expandable threaded segment into tight engagement with said threaded section of said bore.
Claim 35
Dependent Claim
17 words
The implant delivery system of claim 31 , wherein said threaded section is formed by multi-lead threads.
Claim 36
Dependent Claim
19 words
The implant delivery system of claim 32 , wherein a pitch of said threaded section is approximately one millimeter.
Claim 37
Dependent Claim
38 words
The implant delivery system of claim 31 , wherein a torque required to threadably insert said expandable threaded portion into said threaded section of said bore is less about 10 N-cm prior to actuation of said expanding means.
Claim 38
Dependent Claim
49 words
The implant delivery system of claim 31 , wherein said non-round fitting is capable of receiving about 40 N-cm of torque while said implant is held non-rotationally without significant movement of said expandable threaded portion relative to said threaded section due to said tight engagement of said expanding means.
Claim 39
Dependent Claim
44 words
The implant delivery system of claim 35 , wherein said non-round fitting is capable of receiving 100 N-cm of torque while said implant is held non-rotationally without significant movement of said expandable threaded portion relative to said threaded section due to said tight engagement.
Claim 40
Dependent Claim
24 words
The implant delivery system of claim 31 , wherein said expandable threaded portion is fully inserted into said threaded section in approximately one turn.
Claim 41
Dependent Claim
30 words
The implant delivery system of claim 31 , wherein said carrier has a hollow section within said expandable portion, said expanding means includes a structure inserted into said hollow section.
Claim 42
Dependent Claim
31 words
The implant delivery system of claim 38 , wherein said hollow section includes internal threads and said structure has outer threads for threadably engaging said internal threads of said hollow structure.
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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) | 2004-04-16 | 2004-10-16 | 2005-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-04-16 | 2008-10-16 | 2009-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-04-16 | 2012-10-16 | 2013-04-17 | $7700.00 | Window Closed / Lapsed |