US5569251A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Implant device and method of installing
Assignee: BHC Engr LP
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Filing: 1994-11-18
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Granted: 1996-10-29
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Expires: 2014-11-18
Abstract
Abstract A component is an anchor having a hollow shank with an outer threaded surface for securely fixing to a bone and a threaded interior surface for cooperatively receiving a screw. The anchor cooperates with the screw that engages the interior surface of the shank to form an assembly for holding an element in place to support and strengthen the bone. A method for using the device includes forming a cavity in the bone; fixing the anchor; placing the element over the anchor; and fixedly attaching the plate by engaging the screw through the element and into the anchor.
Inventors
- 👤 Gregg S. Baker
- 👤 Paul B. Hafeli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:29
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/686; A61B17/80
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
135 words
An assembly comprising: an element having at least one opening for attachment to a bone; an anchor having a hollow shank having an outer non-expansible threaded surface surrounding an interior surface, said interior surface of said hollow shank for extending into a cavity of the bone, said outer threaded surface for fixedly engaging the cavity of the bone; and an engaging member having a shank with an outer surface for insertion into said hollow shank to fixedly engage said outer surface of said engaging member to said interior surface of said hollow shank of said anchor for holding said element between said engaging member and said anchor, said engaging member and said anchor having means for cooperating to fix said engaging member to said anchor without expanding said outer irregular surface of said hollow shank.
Claim 2
Dependent Claim
135 words
An assembly comprising: an element having at least one opening for attachment to a bone; an anchor having a hollow shank having an outer non-expansible threaded surface surrounding an interior surface, said interior surface of said hollow shank for extending into a cavity of the bone, said outer threaded surface for fixedly engaging the cavity of the bone; and an engaging member having a shank with an outer surface for insertion into said hollow shank to fixedly engage said outer surface of said engaging member to said interior surface of said hollow shank of said anchor for holding said element between said engaging member and said anchor, said engaging member and said anchor having means for cooperating to fix said engaging member to said anchor without expanding said outer irregular surface of said hollow shank.
Claim 3
Dependent Claim
11 words
The assembly of claim 1, wherein said interior surface is circular.
Claim 4
Dependent Claim
11 words
The assembly of claim 2, wherein said interior surface is threaded.
Claim 5
Dependent Claim
24 words
The assembly of claim 3, wherein said engaging member includes a screw having threads for cooperating with said interior surface of said hollow shank.
Claim 6
Dependent Claim
69 words
The assembly of claim 1, wherein said outer surface of said anchor has threads for engaging the cavity of the bone, the anchor having a proximal end for entering the cavity and an opposite distal end, said threads having an outer end facing toward said distal end of said anchor, said outer end being at approximately ninety degrees to a longitudinal axis through said hollow shank of said anchor.
Claim 7
Dependent Claim
68 words
The assembly of claim 1, wherein said outer surface of said anchor has threads for engaging the cavity of the bone, the anchor having a proximal end for entering the cavity and an opposite distal end, said threads having an inner end facing toward said proximal end of said anchor, said inner end being oblique with reference to a longitudinal axis through said hollow shank of said anchor.
Claim 8
Independent Claim
112 words
An apparatus comprising in combination: a plurality of anchors having a non-expansible outer threaded surface for fixedly engaging a cavity of a bone, each anchor having a hollow shank having an interior surface surrounded by said outer threaded surface, said interior surface of said hollow shank for extending into the cavity of the bone, each anchor having a length for substantial insertion into the bone; an element for fixing to a bone surface; and means for securing said element to each anchor by fixedly engaging said interior surface of said hollow shank to hold said element between said securing means and each anchor without expanding said outer surface of said hollow shank.
Claim 9
Independent Claim
112 words
An apparatus comprising in combination: a plurality of anchors having a non-expansible outer threaded surface for fixedly engaging a cavity of a bone, each anchor having a hollow shank having an interior surface surrounded by said outer threaded surface, said interior surface of said hollow shank for extending into the cavity of the bone, each anchor having a length for substantial insertion into the bone; an element for fixing to a bone surface; and means for securing said element to each anchor by fixedly engaging said interior surface of said hollow shank to hold said element between said securing means and each anchor without expanding said outer surface of said hollow shank.
Claim 10
Dependent Claim
14 words
The apparatus of claim 7, wherein said interior surface of each anchor is circular.
Claim 11
Dependent Claim
21 words
The apparatus of claim 8, wherein said securing means includes a screw for cooperating with said interior surface of each anchor.
Claim 12
Dependent Claim
59 words
The apparatus of claim 7, wherein said element includes a plate having a contacting surface for fixing to the bone, said contacting surface complementing the bone, said plate having an opposite surface opposite said contacting surface, and at least one opening through said plate from said contacting surface to said opposite surface, said opening to receive said securing means.
Claim 13
Dependent Claim
39 words
The apparatus of claim 10, wherein said opening in said plate includes an elongated slot for adjustment along a major axis of said slot and a counterbore in said slot for adjustment along a minor axis of said slot.
Claim 14
Dependent Claim
20 words
The apparatus of claim 10, wherein said outer surface of said anchor is larger than said opening in each plate.
Claim 15
Independent Claim
146 words
An apparatus comprising in combination: a first member having at least one opening for attachment to a bone; an anchor having a hollow shank with a non-expansible threaded outer surface surrounding an interior irregular surface, said outer surface for attaching to walls of a cavity formed in the bone for fixing said anchor to the bone, said interior irregular surface of said hollow shank for extending into the cavity of the bone, said anchor having a length for substantial insertion into the bone; and a second member having an elongated portion for insertion through said opening of the first member and a head with a width larger than the width of said opening, said elongated portion having irregularities for cooperating with said interior irregular surface of said shank to fixedly attach said first member to said anchor without expanding said outer surface of said hollow shank.
Claim 16
Independent Claim
146 words
An apparatus comprising in combination: a first member having at least one opening for attachment to a bone; an anchor having a hollow shank with a non-expansible threaded outer surface surrounding an interior irregular surface, said outer surface for attaching to walls of a cavity formed in the bone for fixing said anchor to the bone, said interior irregular surface of said hollow shank for extending into the cavity of the bone, said anchor having a length for substantial insertion into the bone; and a second member having an elongated portion for insertion through said opening of the first member and a head with a width larger than the width of said opening, said elongated portion having irregularities for cooperating with said interior irregular surface of said shank to fixedly attach said first member to said anchor without expanding said outer surface of said hollow shank.
Claim 17
Independent Claim
136 words
A method for attaching an element having an opening to a bone, comprising the steps of: providing an anchor having a hollow shank providing an interior surface surrounded by a non-expansible outer surface for fixedly engaging the bone, said interior surface of said hollow shank for extending into the bone; forming a cavity in the bone for receiving the anchor; fixing said non-expansible outer surface of said anchor into the cavity of the bone; placing the element against the bone with the opening in the element over said hollow shank of said anchor; and fixedly attaching the element by engaging a holding member having a portion for insertion into said hollow shank of said anchor without expanding said outer surface of said hollow shank, whereby the element is held between said anchor and said holding member.
Claim 18
Independent Claim
136 words
A method for attaching an element having an opening to a bone, comprising the steps of: providing an anchor having a hollow shank providing an interior surface surrounded by a non-expansible outer surface for fixedly engaging the bone, said interior surface of said hollow shank for extending into the bone; forming a cavity in the bone for receiving the anchor; fixing said non-expansible outer surface of said anchor into the cavity of the bone; placing the element against the bone with the opening in the element over said hollow shank of said anchor; and fixedly attaching the element by engaging a holding member having a portion for insertion into said hollow shank of said anchor without expanding said outer surface of said hollow shank, whereby the element is held between said anchor and said holding member.
Claim 19
Dependent Claim
16 words
The method as recited in claim 14, further comprising tapping the bone before fixing said anchor.
Claim 20
Dependent Claim
24 words
The method as recited in claim 14, wherein the step of fixing includes threadably fixing said outer surface of said anchor into said cavity.
Claim 21
Dependent Claim
24 words
The method as recited in claim 14, wherein the step of providing includes threadably fixing said interior surface of said anchor into said cavity.
Claim 22
Dependent Claim
47 words
The method as recited in claim 17, wherein the step of fixedly attaching includes said holding member being a screw having threads for cooperating with said interior surface of said anchor to fix said screw to said anchor without expanding said outer surface of said hollow shank.
Claim 23
Dependent Claim
126 words
An assembly comprising: an element having at least one opening for attachment to a bone; an anchor having a hollow shank having a threaded outer surface surrounding a threaded interior surface, said interior surface of said hollow shank for extending into a cavity of the bone, said outer surface for fixedly engaging the cavity of the bone; and an engaging member having a shank with an outer surface for insertion into said hollow shank to fixedly engage said outer surface of said engaging member to said interior surface of said hollow shank of said anchor for holding said element between said engaging member and said anchor, said engaging member having means for cooperating to fix said engaging member to said interior surface of said hollow shank.
Claim 24
Dependent Claim
126 words
An assembly comprising: an element having at least one opening for attachment to a bone; an anchor having a hollow shank having a threaded outer surface surrounding a threaded interior surface, said interior surface of said hollow shank for extending into a cavity of the bone, said outer surface for fixedly engaging the cavity of the bone; and an engaging member having a shank with an outer surface for insertion into said hollow shank to fixedly engage said outer surface of said engaging member to said interior surface of said hollow shank of said anchor for holding said element between said engaging member and said anchor, said engaging member having means for cooperating to fix said engaging member to said interior surface of said hollow shank.
Claim 25
Dependent Claim
11 words
The assembly of claim 19, wherein said interior surface is circular.
Claim 26
Dependent Claim
21 words
The assembly of claim 19, wherein said cooperating means includes threads for cooperating with said interior surface of said hollow shank.
Claim 27
Independent Claim
102 words
An apparatus comprising in combination: a plurality of anchors having a threaded outer surface for fixedly engaging a cavity of a bone, each anchor having a hollow shank having a threaded interior surface surrounded by said outer surface, said interior surface of said hollow shank for extending into the cavity of the bone, each anchor having a length for substantial insertion into the bone; an element for fixing to a bone surface; and means for securing said element to each anchor by fixedly engaging said interior surface of said hollow shank to hold said element between said securing means and each anchor.
Claim 28
Independent Claim
102 words
An apparatus comprising in combination: a plurality of anchors having a threaded outer surface for fixedly engaging a cavity of a bone, each anchor having a hollow shank having a threaded interior surface surrounded by said outer surface, said interior surface of said hollow shank for extending into the cavity of the bone, each anchor having a length for substantial insertion into the bone; an element for fixing to a bone surface; and means for securing said element to each anchor by fixedly engaging said interior surface of said hollow shank to hold said element between said securing means and each anchor.
Claim 29
Dependent Claim
14 words
The apparatus of claim 22, wherein said interior surface of each anchor is circular.
Claim 30
Dependent Claim
23 words
The apparatus of claim 22, wherein said securing means includes a screw for cooperating with said interior surface of at least one anchor.
Claim 31
Dependent Claim
63 words
The apparatus of claim 22, wherein said element includes a plate having a contacting surface for fixing to the bone, said contacting surface having a curve to compliment the bone, said plate having an opposite surface opposite said contacting surface, and at least one opening through said plate from said contacting surface to said opposite surface, said opening to receive said securing means.
Claim 32
Dependent Claim
20 words
The apparatus of claim 25, wherein said outer surface of each anchor is larger than said opening in said plate.
Claim 33
Independent Claim
136 words
An apparatus comprising in combination: a first member having at least one opening for attachment to a bone; an anchor having a hollow shank having a threaded outer surface surrounding a threaded interior surface, said outer surface for attaching to walls of a cavity formed in the bone for fixing said anchor to the bone, said threaded interior surface of said hollow shank for extending into the cavity of the bone, said anchor having a length for substantial insertion into the bone; and a second member having an elongated portion for insertion through said opening of the first member and a head with a width larger than the width of said opening, said elongated portion having irregularities for cooperating with said threaded interior surface of said shank to fixedly attach said first member to said anchor.
Claim 34
Independent Claim
136 words
An apparatus comprising in combination: a first member having at least one opening for attachment to a bone; an anchor having a hollow shank having a threaded outer surface surrounding a threaded interior surface, said outer surface for attaching to walls of a cavity formed in the bone for fixing said anchor to the bone, said threaded interior surface of said hollow shank for extending into the cavity of the bone, said anchor having a length for substantial insertion into the bone; and a second member having an elongated portion for insertion through said opening of the first member and a head with a width larger than the width of said opening, said elongated portion having irregularities for cooperating with said threaded interior surface of said shank to fixedly attach said first member to said anchor.
Claim 35
Independent Claim
135 words
A method for attaching an element having an opening to a bone, comprising the steps of: providing an anchor having a hollow shank with a threaded interior surface surrounded by a threaded outer surface for fixedly engaging the bone, said threaded interior surface of said hollow shank for extending into the bone; forming a cavity in the bone for receiving the anchor; fixing said threaded outer surface of said anchor into the cavity of the bone by rotating said anchor; placing the element against the bone with the opening in the element over said hollow shank of said anchor; and fixedly attaching the element by engaging a screw having a threaded portion for cooperating with said threaded interior surface of said hollow shank, whereby the element is held between said anchor and said holding member.
Claim 36
Independent Claim
135 words
A method for attaching an element having an opening to a bone, comprising the steps of: providing an anchor having a hollow shank with a threaded interior surface surrounded by a threaded outer surface for fixedly engaging the bone, said threaded interior surface of said hollow shank for extending into the bone; forming a cavity in the bone for receiving the anchor; fixing said threaded outer surface of said anchor into the cavity of the bone by rotating said anchor; placing the element against the bone with the opening in the element over said hollow shank of said anchor; and fixedly attaching the element by engaging a screw having a threaded portion for cooperating with said threaded interior surface of said hollow shank, whereby the element is held between said anchor and said holding member.
Claim 37
Dependent Claim
16 words
The method as recited in claim 28, further comprising tapping the bone before fixing said anchor.
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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) | 1999-10-29 | 2000-04-29 | 2000-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-10-29 | 2004-04-29 | 2004-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-10-29 | 2008-04-29 | 2008-10-29 | $7700.00 | Window Closed / Lapsed |