Patent US6726687B2 successfully refreshed from Google Patents.
US6726687B2
Expired / Lapsed
US
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Closure plug for open-headed medical implant
Assignee: Individual
•
Filing: 2001-11-09
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Granted: 2004-04-27
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Expires: 2021-11-09
Abstract
Abstract A closure for an open headed medical implant, such as a bone screw. The closure having a cylindrical body having an axis of rotation and also having a threaded radially outer surface. The body having a plurality of bores that open onto a top surface of the body and that are parallel to but spaced from the axis of rotation. In one embodiment the closure also has a break-off head centrally attached by a neck to the top surface of the body. Preferably, the body also includes an axial threaded bore that extends from a bottom to the top of the surface body, but that is only exposed when the break-off head breaks away. In another embodiment a tool is used to insert the closure in the implant without a break-off head and a central threaded bore of the closure receives a set screw.
Inventors
- 👤 Roger P. Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:18
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/70; A61B17/7001; A61B17/7032; A61B90/00; A61B90/03; A61B2090/037
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
170 words
An open-headed medical implant having: a) a first element adapted to operably be joined to a bone or other implant; b) an implant head secured to said first element and having a pair of upright spaced arms defining a channel therebetween; said arms each having facing interior threaded surfaces; c) a plug for closing said channel between said arms; said plug comprising: i) a body sized and shaped to be received between the arms of said head; said body having a radially outward surface that has a thread thereon that is sized and shaped to threadedly mate with the threaded arms of said head; ii) said body having a top and a bottom; said top of said body having at least one bore therein sized and shaped to receive a tool and extending generally axially at least partially through said body from top to bottom thereof; and wherein: iii) said bore is spaced from and positioned between both a central axis of said body and a periphery of said body.
Claim 2
Dependent Claim
170 words
An open-headed medical implant having: a) a first element adapted to operably be joined to a bone or other implant; b) an implant head secured to said first element and having a pair of upright spaced arms defining a channel therebetween; said arms each having facing interior threaded surfaces; c) a plug for closing said channel between said arms; said plug comprising: i) a body sized and shaped to be received between the arms of said head; said body having a radially outward surface that has a thread thereon that is sized and shaped to threadedly mate with the threaded arms of said head; ii) said body having a top and a bottom; said top of said body having at least one bore therein sized and shaped to receive a tool and extending generally axially at least partially through said body from top to bottom thereof; and wherein: iii) said bore is spaced from and positioned between both a central axis of said body and a periphery of said body.
Claim 3
Dependent Claim
24 words
The implant according to claim 1 wherein: a) there are a pair of spaced bores extending into said body from the top surface thereof.
Claim 4
Dependent Claim
15 words
The implant according to claim 1 wherein: a) said body is generally cylindrical in shape.
Claim 5
Dependent Claim
29 words
The implant according to claim 1 including: a) a break-off head joined to said body by a neck; said neck being aligned with the central axis of said body.
Claim 6
Dependent Claim
31 words
The implant according to claim 4 wherein: a) said body includes at least a pair of said bores in the top thereof; and b) said neck is positioned between said bores.
Claim 7
Dependent Claim
68 words
The implant according to claim 4 wherein: a) said break-off head has a tool gripable outer surface for operably rotating said closure during insertion into said implant head and said neck being sized and shaped such that said break-off head breaks from said body when a preselected torque is applied to said break-off head by such a gripping tool with a generally clean profile at said top surface.
Claim 8
Dependent Claim
49 words
The implant according to claim 4 wherein: a) said body includes an axial extending bore from the bottom to near the top thereof; said axial bore being located beneath said neck and being accessible from the top of said body when said break-off head breaks away from said body.
Claim 9
Dependent Claim
13 words
The implant according to claim 7 wherein: a) said axial bore is threaded.
Claim 10
Dependent Claim
27 words
The implant according to claim 1 wherein: a) said closure includes an axial threaded bore passing entirely through said body from a top to a bottom thereof.
Claim 11
Dependent Claim
48 words
The implant according to claim 9 in combination with: a) a threaded set screw sized and shaped to be received in said axial bore; said axial set screw being also sized and shaped to extend outward from said body bottom surface when said screw is fully installed therein.
Claim 12
Dependent Claim
45 words
The implant according to claim 1 wherein: a) said body top surface has three spaced tool receiving bores located therein; each of said bores being located at a common radius from said body central axis and being spaced at 120° from adjacent tool receiving bores.
Claim 13
Dependent Claim
38 words
The implant according to claim 1 wherein: a) said body top has four spaced tool receiving bores each being located at a common radius from said body central axis and being evenly spaced from adjacent tool receiving bores.
Claim 14
Dependent Claim
93 words
The implant according to claim 1 including: a) a tool having a gripable handle and an engagement face; said face including a post extending parallel to an axis of rotation of said tool for each said body bore; each said post being sized, aligned and positional to simultaneously enter a respective bore so as to rotate and apply torque to said body when said tool is rotated about the axis thereof, whereby said tool is operable to at least remove said body from said implant head in which said body has been inserted.
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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) | 2007-04-27 | 2007-10-27 | 2008-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-04-27 | 2011-10-27 | 2012-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-04-27 | 2015-10-27 | 2016-04-27 | $7700.00 | Window Closed / Lapsed |