Patent US4988351A successfully refreshed from Google Patents.
US4988351A
Expired / Lapsed
US
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Washer for use with cancellous screw for attaching soft tissue to bone
Assignee: Linvatec Corp
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Filing: 1989-01-06
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Granted: 1991-01-29
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Expires: 2009-01-06
Abstract
Abstract A soft tissue washer for use with a cancellous screw for attaching soft tissue, such as ligaments, to bone has posts disposed on a distal face of a washer body to limit penetration of sharp pins extending from the distal face into soft tissue, an annular recess disposed is the distal face to receive and clamp soft tissue, recess portions deeper than the annular recess disposed in the distal face to relieve compression of soft tissue, a dished recess in a proximal face of the washer body to entirely receive the head of the cancellous screw such that the head does not protrude from the washer and suture retention passages extending from the dished recess to a lateral rim of the washer for receiving sutures.
Inventors
- 👤 Leon E. Paulos
- 👤 Thomas D. Rosenberg
- 👤 Randall D. Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:21
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/08; A61F2/0811; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/68; A61B17/84; A61B17/86; A61B17/8625; A61B17/8695; A61F2002/0817; A61F2002/0823; A61F2002/0829; A61F2002/0847; A61F2002/0858; A61F2002/0876; A61F2002/0888; A61F2/30; A61F2/30767; A61F2/30771; A61F2002/30841; A61F2002/30878; A61F2002/30891; A61F2002/30892
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
73 words
A washer for engaging soft tissue in the body comprising a washer body having a proximal face and a distal face; pin means extending from said distal face for penetrating soft tissue; and stop means independent of said pin means, and laterally spaced from said pin means, said stop means extending from said distal face a distance less than said pin means to limit penetration of said pin means in the soft tissue.
Claim 2
Dependent Claim
73 words
A washer for engaging soft tissue in the body comprising a washer body having a proximal face and a distal face; pin means extending from said distal face for penetrating soft tissue; and stop means independent of said pin means, and laterally spaced from said pin means, said stop means extending from said distal face a distance less than said pin means to limit penetration of said pin means in the soft tissue.
Claim 3
Dependent Claim
22 words
A washer as recited in claim 1 wherein said pin means includes a plurality of sharp pins arranged around said distal face.
Claim 4
Dependent Claim
21 words
A washer as recited in claim 2 wherein said stop means includes a plurality of posts arranged around said distal face.
Claim 5
Dependent Claim
19 words
A washer as recited in claim 3 wherein each of said posts is disposed between two of said pins.
Claim 6
Dependent Claim
38 words
A washer as recited in claim 4 wherein said washer body has a circular configuration and has a central bore therethrough, and said pluralities of pins and posts are arranged in a circular configuration around said central bore.
Claim 7
Dependent Claim
25 words
A washer as recited in claim 5 wherein said proximal face of said washer body has a dished recess therein communicating with said central bore.
Claim 8
Dependent Claim
32 words
A washer as recited in claim 6 and further comprising recess means disposed adjacent said distal face of said washer body for receiving soft tissue when said pins penetrate the soft tissue.
Claim 9
Dependent Claim
19 words
A washer as recited in claim 7 wherein said recess means includes an annular recess surrounding said central bore.
Claim 10
Dependent Claim
48 words
A washer as recited in claim 8 wherein said washer body includes a lateral rim extending around said dished recess in said proximal face and a plurality of suture retention holes passing through said washer body from openings in said dished recess to openings in said lateral rim.
Claim 11
Dependent Claim
31 words
A washer as recited in claim 9 wherein said suture retention holes extend at an angle to the axis of said central bore and are aligned between said posts and pins.
Claim 12
Dependent Claim
32 words
A washer as recited in claim 1 and further comprising recess means disposed adjacent said distal face of said washer body for receiving soft tissue when said pins penetrate the soft tissue.
Claim 13
Dependent Claim
19 words
A washer as recited in claim 11 wherein said recess means includes an annular recess surrounding said central bore.
Claim 14
Dependent Claim
19 words
A washer as recited in claim 1 wherein said washer body has passage means extending therethrough for receiving sutures.
Claim 15
Dependent Claim
35 words
A washer as recited in claim 13 wherein said washer body has a lateral rim, said proximal face has a dished recess therein and said passage means extends between said dished recess and said lateral.
Claim 16
Dependent Claim
77 words
A washer for engaging soft tissue in the body comprising a washer body having a proximal face, a distal face, a bore extending longitudinally through said washer body from said proximal face to said distal face and a wall disposed at said distal face surrounding said bore; pin means extending from said distal face for penetrating soft tissue; and recess means disposed in said wall for receiving soft tissue when said pin means penetrates the soft tissue.
Claim 17
Dependent Claim
77 words
A washer for engaging soft tissue in the body comprising a washer body having a proximal face, a distal face, a bore extending longitudinally through said washer body from said proximal face to said distal face and a wall disposed at said distal face surrounding said bore; pin means extending from said distal face for penetrating soft tissue; and recess means disposed in said wall for receiving soft tissue when said pin means penetrates the soft tissue.
Claim 18
Dependent Claim
28 words
A washer as recited in claim 15 wherein said bore passes centrally through said washer body and said recess means includes an annular recess surrounding said central bore.
Claim 19
Dependent Claim
22 words
A washer as recited in claim 16 wherein said pin means includes a plurality of sharp pins arranged around said distal face.
Claim 20
Dependent Claim
48 words
A washer as recited in claim 16 wherein said proximal face of said washer body has a dished recess therein communicating with said central bore and said washer body has a lateral rim and passage means extending between said dished recess and said lateral rim for receiving sutures.
Claim 21
Dependent Claim
52 words
A washer for engaging soft tissue in the body comprising a washer body having a proximal face, a distal face and a central bore therethrough; pin means extending from said distal face for penetrating soft tissue; and passage means separate from said central bore extending through said washer body for receiving sutures.
Claim 22
Dependent Claim
52 words
A washer for engaging soft tissue in the body comprising a washer body having a proximal face, a distal face and a central bore therethrough; pin means extending from said distal face for penetrating soft tissue; and passage means separate from said central bore extending through said washer body for receiving sutures.
Claim 23
Dependent Claim
28 words
A washer as recited in claim 19 wherein said washer body includes a lateral rim and said passage means extends between said proximal face and said lateral rim.
Claim 24
Dependent Claim
40 words
A washer as recited in claim 20 wherein said proximal face has a dished recess therein and said passage means includes a plurality of suture retention holes extending between openings in said dished recess and openings in said lateral rim.
Claim 25
Dependent Claim
113 words
Apparatus for attaching soft tissue to bone comprising a cancellous screw having a threaded shank and a low profile head; and a soft tissue washer including a washer body having a proximal face, a distal face and a central bore therethrough, a plurality of pins extending from said distal face for penetrating soft tissue, a dished recess disposed in said proximal face and passage means passing through said washer body from an opening in said dished recess for receiving sutures, said shank of said cancellous screw passing through said central bore and said head of said cancellous screw being received entirely in said dished recess leaving said opening of said passage means unobstructed.
Claim 26
Dependent Claim
113 words
Apparatus for attaching soft tissue to bone comprising a cancellous screw having a threaded shank and a low profile head; and a soft tissue washer including a washer body having a proximal face, a distal face and a central bore therethrough, a plurality of pins extending from said distal face for penetrating soft tissue, a dished recess disposed in said proximal face and passage means passing through said washer body from an opening in said dished recess for receiving sutures, said shank of said cancellous screw passing through said central bore and said head of said cancellous screw being received entirely in said dished recess leaving said opening of said passage means unobstructed.
Claim 27
Dependent Claim
34 words
Apparatus for attaching soft tissue to bone as recited in claim 22 wherein said passage means includes a plurality of suture retention holes passing through said washer body from openings in said dished recess.
Claim 28
Dependent Claim
39 words
Apparatus for attaching soft tissue to bone as recited in claim 23 wherein said washer body includes a lateral rim extending around said dished recess and said suture retention holes extend between said dished recess and said lateral rim.
Claim 29
Dependent Claim
40 words
Apparatus for attaching soft tissue to bone as recited in claim 24 wherein said distal face of said washer body has an annular recess therein surrounding said central bore for receiving soft tissue when said pins penetrate the soft tissue.
Claim 30
Dependent Claim
42 words
Apparatus for attaching soft tissue to bone as recited in claim 25 wherein a plurality of posts extend from said distal face of said washer body a distance less than said pins to limit penetration of said pins in the soft tissue.
Claim 31
Independent Claim
80 words
A device for engaging tissue in the body comprising a body having a proximal face and a distal face; a plurality of spaced sharp pins extending from said distal face; and a plurality of posts independent of said pins extending from said distal face and spaced from each other and from said pins, said posts extending from said distal face a distance less than said pins and having substantially flat faces to limit penetration of said pins in the tissue.
Claim 32
Independent Claim
80 words
A device for engaging tissue in the body comprising a body having a proximal face and a distal face; a plurality of spaced sharp pins extending from said distal face; and a plurality of posts independent of said pins extending from said distal face and spaced from each other and from said pins, said posts extending from said distal face a distance less than said pins and having substantially flat faces to limit penetration of said pins in the tissue.
Claim 33
Dependent Claim
34 words
A device for engaging tissue in the body as recited in claim 27 wherein said pins have lands thereon disposed a distance from said distal face the same as the length of said posts.
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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) | 1994-01-28 | 1994-07-30 | 1995-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-28 | 1998-07-30 | 1999-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-28 | 2002-07-30 | 2003-01-29 | $7700.00 | Window Closed / Lapsed |